Device for concealed pipe salt elimination in saline-alkali soil

Abstract

The utility model relates to the technical field of saline-alkali soil salt elimination, and discloses a device for saline-alkali soil concealed pipe salt elimination, which comprises a cross-shaped pipeline structure composed of four buried pipes, the adjacent buried pipes are perpendicular to each other, and the inner cavities of the buried pipes are communicated with each other; the four buried pipes form a cross shape; a water inlet structure is arranged on each buried pipe; a water guide structure is arranged at the bottom of an inner cavity of each buried pipe; four groups of water permeable containers, wherein each group of water permeable containers is respectively arranged on the corresponding buried pipe; and each group of purification parts is respectively arranged in the corresponding permeable container. According to the utility model, the cross-shaped pipeline structure can extend in the transverse direction and the longitudinal direction, so that the coverage range of the salt elimination concealed conduit in the saline-alkali soil is expanded; when the cross-shaped pipeline structure is buried into the soil of the saline-alkali soil, each group of purification pieces can continuously purify the saline-alkali soil, so that the desalting time of the saline-alkali soil can be shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of salt drainage from saline-alkali land, in particular to a device for draining salt through concealed pipes from saline-alkali land. Background Art

[0002] The salt contained in saline-alkali soil will affect the normal growth of crops. The formation of alkaline soil and alkaline soil in my country is mostly related to the accumulation of carbonates in the soil. Therefore, the alkalinity is generally high. Plants can hardly survive in severe saline-alkali soil areas. Therefore, in order to expand the planting area, it is urgent to improve the saline-alkali land to make it suitable for crop cultivation.

[0003] There are many ways to improve saline-alkali land. One of the most commonly used methods is to drain salt by burying a concealed pipe network under the saline-alkali soil layer.

[0004] This technology buries underground pipes about 1 meter below the saline-alkali soil layer. There are many micropores distributed on the pipe walls. The underground pipes avoid occupying agricultural land and greatly reduce construction and maintenance costs. Through artificial irrigation or rainwater flushing, the salty water in the soil is introduced into the drainage pipe through the micropores on the pipe wall and discharged from the soil, achieving the effect of salt washing and desalination.

[0005] For example, the Chinese invention patent with publication number CN106358475A discloses a concealed pipe for draining salt from saline-alkali land, comprising a pipe body, wherein water seepage layers are symmetrically arranged on the upper and lower sides of the pipe body, water seepage holes are provided on the surface of the water seepage layer, a dressing layer is provided on the top of the water seepage layer, plug-in holes are provided on the surface of the dressing layer, a water filtering device is provided on the top of the pipe body, water filtering wings are installed on the left and right sides of the pipe body, plug-in grooves are provided on the left and right side walls of the pipe body, a pipe joint is provided on the right side of the pipe body, and threaded holes are evenly provided on the circumference of the pipe joint.

[0006] The saline-alkali land salt drainage concealed pipe disclosed in this patent can be buried in the soil layer of the saline-alkali land, and can be used for draining salt from the saline-alkali land after being buried.

[0007] However, the salt drainage concealed pipe in this patent has a small coverage area and can only be extended in a single direction, and is difficult to extend in the horizontal and vertical directions;

[0008] At the same time, the salt drainage pipe in this patent is difficult to purify the saline-alkali soil after being buried underground.

[0009] Based on this, a device for draining salt from saline-alkali land through concealed pipes is proposed. Summary of the Invention

[0010] (1) Technical problems solved

[0011] In view of the shortcomings of the prior art, the present invention provides a device for draining salt from saline-alkali land through a concealed pipe, so as to solve the following problems raised in the background art:

[0012] First, the existing salt drainage concealed pipe has a small coverage area and can only be extended in a single direction, and is difficult to extend in the horizontal and vertical directions;

[0013] Second, the problem that the salt drainage concealed pipes in the prior art are difficult to purify saline-alkali soil after being buried underground.

[0014] (2) Technical solution

[0015] To achieve the above objectives, the present invention provides the following technical solutions:

[0016] A device for draining salt from saline-alkali land through a concealed pipe, comprising:

[0017] A cross-shaped pipeline structure, which is composed of four buried pipes, adjacent buried pipes are perpendicular to each other, and the inner cavities of each buried pipe are interconnected;

[0018] Wherein, the four buried pipes are in a cross shape;

[0019] Each of the buried pipes is provided with a water inlet structure;

[0020] A water guide structure is provided at the bottom of the inner cavity of each buried pipe;

[0021] Four groups of water-permeable containers, each group of water-permeable containers is installed on a corresponding buried pipe; and

[0022] There are four groups of purification components, and each group of purification components is installed in a corresponding water-permeable container.

[0023] Preferably, a plurality of embedding grooves are provided on the side wall of each buried pipe;

[0024] Each group of water-permeable containers can be detachably installed in the corresponding embedding groove.

[0025] Preferably, each group of the water-permeable containers is provided with a plurality of them, and each of the water-permeable containers is a water-permeable container;

[0026] Each of the water-permeable receiving boxes is plugged into the corresponding embedding groove, and after plugging, the bottom of the water-permeable receiving box is located in the inner cavity of the corresponding embedding groove;

[0027] Each group of purification components is detachably installed in a corresponding water-permeable receiving box.

[0028] Preferably, each group of the purification components is provided with a plurality of purification components, and each purification component is a microbial agent package;

[0029] Each of the microbial agent packages is inserted into a corresponding water-permeable containing box.

[0030] Preferably, a plurality of water-permeable holes are provided on the bottom of each of the water-permeable storage boxes.

[0031] Preferably, both ends of the top of each of the water-permeable containing boxes are integrally formed with side wings, and the bottom of each of the side wings has an arc-shaped groove portion;

[0032] After the water-permeable receiving box is inserted and installed in the corresponding embedding groove, the two arc-shaped groove portions can fit with the surface of the corresponding buried pipe.

[0033] Preferably, the shape and size of the microbial agent package are smaller than or equal to the shape and size of the inner cavity of the water-permeable container.

[0034] Preferably, there are two groups of water inlet structures on each buried pipe, and the two groups of water inlet structures are respectively arranged obliquely above both sides of the buried pipe;

[0035] The water guide structure provided at the bottom of the inner cavity of each buried pipe is a water guide groove;

[0036] Each of the water guide grooves is opened at the bottom of the inner cavity of the corresponding buried pipe.

[0037] Preferably, each set of water inlet structures is a plurality of water inlet side holes opened on the buried pipe;

[0038] The included angle between each group of water inlet side holes and the embedding groove is 45°.

[0039] Preferably, a ring-shaped connector is fixedly mounted on the outer wall of the port of each buried pipe.

[0040] Beneficial effects:

[0041] The utility model provides a device for draining salt from saline-alkali land through concealed pipes, which has the following beneficial effects:

[0042] 1. In the present invention, the cross-shaped pipeline structure can be extended in the horizontal and longitudinal directions, thereby expanding the coverage of the salt drainage concealed pipe in the saline-alkali land.

[0043] 2. In the present invention, each set of permeable containers is used to support corresponding purification components. When the cross-shaped pipeline structure is buried in the soil of saline-alkali land, each set of purification components can continuously purify the saline-alkali soil, thereby shortening the desalination time of the saline-alkali soil.

[0044] 3. In the present invention, the water inlet structure is used to allow saline water in the saline-alkali soil to enter the cross-shaped pipe structure;

[0045] The water guide structure can facilitate the discharge of saline water that has entered the cross-shaped pipe structure.

[0046] Fourth, in the present invention, after the permeable housing box is inserted into the corresponding mounting groove, each set of purification components can also be installed in the corresponding permeable housing box, and each set of purification components can be easily installed or removed from the corresponding permeable housing box;

[0047] When each set of purification components is installed in the corresponding permeable receiving box, saline-alkali soil can be purified.

[0048] 5. In the present invention, the microbial agent package is the preferred form of the purification element. The microbial agent package can be conveniently inserted and installed in the corresponding water-permeable container, and can also be removed from the corresponding water-permeable container;

[0049] Moreover, the surface of the microbial agent bag is a non-woven bag, and the interior of the non-woven bag is microbial agent powder. When saline-alkali soil comes into contact with the microbial agent bag, the saline-alkali soil can be purified under the action of the microbial agent bag.

[0050] 6. In the present invention, a plurality of water-permeable holes can allow water in the saline-alkali soil to pass through and enter the inner cavity of the buried pipe through the plurality of water-permeable holes.

[0051] 7. In the present invention, the side wings on both sides of the top of each water-permeable storage box can play a limiting role. At the same time, the arc-shaped groove at the bottom of each side wing can fit with the surface of the corresponding buried pipe, thereby making the water-permeable storage box more stable.

[0052] 8. In the present invention, two sets of water inlet structures are respectively arranged obliquely above the two sides of the buried pipe. The inclined arrangement of the two sets of water inlet structures helps to obtain a larger water inlet area;

[0053] The two groups of water inlet side holes are the preferred form of the water inlet structure. The two groups of water inlet side holes can facilitate the water in the saline-alkali soil to enter the corresponding buried pipe.

[0054] 9. In the present invention, the angle between each set of water inlet side holes and the embedding groove is 45°. This angle can allow the water in the saline-alkali soil to enter the inner cavity of the corresponding buried pipe to the greatest extent.

[0055] 10. In the present invention, the water guide trough is the preferred form of the water guide structure, and each water guide trough can discharge the water in the corresponding buried pipe to the outside.

[0056] 11. In the present invention, each annular connector is used to connect the corresponding buried pipe to the pipeline. In actual application, the size of the connected pipeline needs to be the same as the size of the buried pipe. At this time, the connected pipeline can be connected and fixed to the buried pipe through the corresponding annular connector. When each buried pipe is connected to the pipeline through the corresponding annular connector, the coverage of the salt drainage pipe can be further expanded in the horizontal and vertical directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0058] Figure 2 A three-dimensional schematic diagram of a partial cross section of the present invention;

[0059] Figure 3 This is an explosion diagram of the utility model;

[0060] Figure 4 A three-dimensional schematic diagram of the present invention viewed from above;

[0061] Figure 5 For the utility model Figure 1 A magnified three-dimensional schematic diagram of part A in the middle;

[0062] Figure 6 A three-dimensional schematic diagram of the present invention and the combination thereof;

[0063] Figure 7 A three-dimensional schematic diagram of the present invention viewed from above;

[0064] Figure 8 It is a three-dimensional schematic diagram of a partial section of the present invention.

[0065] In the figure: 10, cross-shaped piping structure; 101, buried pipe; 102, embedded groove; 103, water inlet side hole; 104, water guide groove; 20, permeable container; 201, permeable storage box; 202, permeable hole; 203, side wing; 204, arc-shaped groove portion; 30, purification component; 301, microbial agent bag; 40, annular connector. DETAILED DESCRIPTION

[0066] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0067] Example 1

[0068] The salt contained in saline-alkali soil will affect the normal growth of crops. In order to expand the planting area, it is urgent to improve the saline-alkali land to make it suitable for crop cultivation.

[0069] There are many ways to improve saline-alkali land. One of the most commonly used methods is to drain salt by burying a concealed pipe network under the saline-alkali soil layer.

[0070] This technology buries underground pipes about 1 meter below the saline-alkali soil layer. There are many micropores distributed on the pipe walls. The underground pipes avoid occupying agricultural land and greatly reduce construction and maintenance costs. Through artificial irrigation or rainwater flushing, the salty water in the soil is introduced into the drainage pipe through the micropores on the pipe wall and discharged from the soil, achieving the effect of salt washing and desalination.

[0071] For example, Chinese invention patent publication number CN106358475A discloses a saline-alkali land salt drainage concealed pipe. The saline-alkali land salt drainage concealed pipe disclosed in the patent can be buried in the soil layer of the saline-alkali land and can be used to drain salt from the saline-alkali land after being buried.

[0072] However, the salt drainage concealed pipe in this patent has a small coverage area and can only be extended in a single direction, and is difficult to extend in the horizontal and vertical directions;

[0073] At the same time, the salt drainage pipe in this patent is difficult to purify the saline-alkali soil after being buried underground.

[0074] Based on this, in order to solve the above technical problems, the following technical solutions are now adopted, as follows:

[0075] like Figure 1-4 As shown, the utility model provides a technical solution:

[0076] A device for draining salt from saline-alkali land through a concealed pipe, comprising:

[0077] The cross-shaped pipeline structure 10 is composed of four buried pipes 101. Adjacent buried pipes 101 are perpendicular to each other, and the inner cavities of each buried pipe 101 are interconnected.

[0078] Among them, the four buried pipes 101 are in a cross shape;

[0079] The cross-shaped pipeline structure 10 can be extended in the horizontal and longitudinal directions, thereby expanding the coverage of the salt drainage pipe in the saline-alkali land.

[0080] Each buried pipe 101 is provided with a water inlet structure;

[0081] The water inlet structure is used to allow saline-alkali water in the saline-alkali soil to enter the cross-shaped pipe structure 10 .

[0082] A water guide structure is provided at the bottom of the inner cavity of each buried pipe 101;

[0083] The water guide structure can facilitate the discharge of saline water that has entered the cross-shaped pipe structure 10 .

[0084] Four groups of water-permeable containers 20, each group of water-permeable containers 20 is installed on a corresponding buried pipe 101; and

[0085] There are four groups of purification components 30, each group of purification components 30 is installed in a corresponding permeable container 20, and each group of permeable containers 20 is used to support the corresponding purification component 30. When the cross-shaped pipe structure 10 is buried in the soil of saline-alkali land, each group of purification components 30 can continuously purify the saline-alkali soil, so that the desalination time of the saline-alkali soil can be shortened.

[0086] Example 2

[0087] like Figure 1-8 As shown, based on the first embodiment, the following improvements are made:

[0088] Further, such as Figure 3 As shown, a plurality of embedding grooves 102 are provided on the side wall of each buried pipe 101;

[0089] Each set of water-permeable containers 20 can be detachably installed in the corresponding embedding groove 102 . Each set of water-permeable containers 20 can be conveniently installed in the corresponding embedding groove 102 . At the same time, each set of water-permeable containers 20 can also be conveniently removed from the corresponding embedding groove 102 .

[0090] Further, such as Figure 2 As shown, each group of water-permeable containers 20 is provided with a plurality of water-permeable containers 20, and each water-permeable container 20 is a water-permeable container box 201;

[0091] Each water-permeable container 201 is plugged into the corresponding mounting groove 102, and after plugging, the bottom of the water-permeable container 201 is located in the inner cavity of the corresponding mounting groove 102;

[0092] Each set of purification components 30 is detachably mounted in a corresponding water-permeable container 201. The water-permeable container 201 is a preferred form of the water-permeable container 20. When the water-permeable container 201 is plugged into the corresponding mounting groove 102, each set of purification components 30 can also be installed in the corresponding water-permeable container 201. Moreover, each set of purification components 30 can be easily installed or removed from the corresponding water-permeable container 201.

[0093] When each set of purification components 30 is installed in the corresponding water-permeable housing box 201 , saline-alkali soil can be purified.

[0094] Further, such as Figure 2-3 As shown, each group of purification components 30 is provided with a plurality of purification components 30 , and each purification component 30 is a microbial agent package 301 ;

[0095] Each microbial agent package 301 is inserted into a corresponding water-permeable container 201. The microbial agent package 301 is a preferred form of the purification element 30. The microbial agent package 301 can be conveniently inserted and installed in the corresponding water-permeable container 201 and can also be removed from the corresponding water-permeable container 201.

[0096] Moreover, the surface of the microbial agent bag 301 is a non-woven bag, and the interior of the non-woven bag is microbial agent powder. When saline-alkali soil comes into contact with the microbial agent bag 301 , the saline-alkali soil can be purified under the action of the microbial agent bag 301 .

[0097] Further, such as Figure 7-8 As shown, a plurality of water-permeable holes 202 are provided at the bottom of each water-permeable container 201 . The water-permeable holes 202 allow water in the saline-alkali soil to pass through and enter the inner cavity of the buried pipe 101 through the water-permeable holes 202 .

[0098] Further, such as Figure 6-8 As shown, each water-permeable container 201 has side wings 203 integrally formed at both ends of the top, and each side wing 203 has an arc-shaped groove 204 at the bottom;

[0099] After the water-permeable containing box 201 is inserted and installed in the corresponding embedding groove 102, the two arc-shaped groove portions 204 can fit with the surface of the corresponding buried pipe 101, and the side wings 203 on both sides of the top of each water-permeable containing box 201 can play a limiting role. At the same time, the arc-shaped groove portion 204 at the bottom of each side wing 203 can fit with the surface of the corresponding buried pipe 101, thereby making the water-permeable containing box 201 more stable.

[0100] More specifically, Figure 6 As shown, the shape and size of the microbial agent package 301 are smaller than or equal to the shape and size of the inner cavity of the water-permeable container 201 .

[0101] Further, such as Figure 1-5 As shown, there are two groups of water inlet structures on each buried pipe 101. The two groups of water inlet structures are respectively arranged obliquely above both sides of the buried pipe 101. The inclined arrangement of the two groups of water inlet structures helps to obtain a larger water inlet area.

[0102] The water guide structure provided at the bottom of the inner cavity of each buried pipe 101 is a water guide groove 104. The water guide groove 104 is a preferred form of water guide structure. Each water guide groove 104 can discharge the water in the corresponding buried pipe 101 outward.

[0103] More specifically, each water channel 104 is opened at the bottom of the inner cavity of the corresponding buried pipe 101 .

[0104] Further, such as Figure 1-5 As shown, each set of water inlet structures is a plurality of water inlet side holes 103 opened on the buried pipe 101. Two sets of water inlet side holes 103 are the preferred form of the water inlet structure. The two sets of water inlet side holes 103 can facilitate the water in the saline-alkali soil to enter the corresponding buried pipe 101.

[0105] More specifically, the angle between each set of water inlet side holes 103 and the embedding groove 102 is 45°. This angle can allow water in the saline-alkali soil to enter the inner cavity of the corresponding buried pipe 101 to the greatest extent.

[0106] Further, such as Figure 1-5 As shown, a ring-shaped connector 40 is fixedly installed on the outer wall of the port of each buried pipe 101. Each ring-shaped connector 40 is used for the corresponding buried pipe 101 to connect to the pipeline. In actual application, the size of the connected pipeline needs to be the same as the size of the buried pipe 101. At this time, the connected pipeline can be connected and fixed to the buried pipe 101 through the corresponding ring-shaped connector 40. When each buried pipe 101 is connected to the pipeline through the corresponding ring-shaped connector 40, the coverage of the salt drainage pipe can be further expanded in the horizontal and vertical directions.

[0107] In summary, the workflow of this utility model is as follows:

[0108] like Figure 1-8 As shown, the cross-shaped pipeline structure 10 can be extended in the horizontal and longitudinal directions, thereby expanding the coverage of the salt drainage pipeline in the saline-alkali land;

[0109] The water inlet structure is used to allow saline water in the saline-alkali soil to enter the cross-shaped pipe structure 10;

[0110] The water guide structure can facilitate the discharge of saline water entering the cross-shaped pipe structure 10;

[0111] Each set of permeable containers 20 is used to support a corresponding purification element 30. When the cross-shaped pipe structure 10 is buried in the soil of saline-alkali land, each set of purification elements 30 can continuously purify the saline-alkali soil, thereby shortening the desalination time of the saline-alkali soil.

[0112] Specifically, each set of water-permeable containers 20 can be conveniently installed in the corresponding embedding groove 102, and at the same time, each set of water-permeable containers 20 can also be conveniently removed from the corresponding embedding groove 102;

[0113] Specifically, the water-permeable container 201 is a preferred form of the water-permeable container 20. When the water-permeable container 201 is inserted into the corresponding mounting groove 102, each set of purification components 30 can also be installed in the corresponding water-permeable container 201. Moreover, each set of purification components 30 can be easily installed or removed from the corresponding water-permeable container 201.

[0114] When each set of purification elements 30 is installed in the corresponding permeable container 201, it can purify saline-alkali soil;

[0115] Specifically, the microbial agent package 301 is a preferred form of the purification element 30. The microbial agent package 301 can be conveniently inserted and installed in the corresponding water-permeable container 201, and can also be taken out from the corresponding water-permeable container 201.

[0116] Furthermore, the surface of the microbial agent bag 301 is a non-woven bag, and the interior of the non-woven bag contains microbial agent powder. When saline-alkali soil comes into contact with the microbial agent bag 301, the saline-alkali soil can be purified under the action of the microbial agent bag 301.

[0117] Specifically, the plurality of water holes 202 can allow water in the saline-alkali soil to pass through the plurality of water holes 202 and enter the inner cavity of the buried pipe 101;

[0118] Specifically, the side wings 203 on both sides of the top of each water-permeable container 201 can play a role in limiting. At the same time, the arc-shaped groove portion 204 at the bottom of each side wing 203 can fit with the surface of the corresponding buried pipe 101, thereby improving the stability of the water-permeable container 201.

[0119] Specifically, the shape and size of the microbial agent package 301 are smaller than or equal to the shape and size of the inner cavity of the water-permeable container 201;

[0120] Specifically, the two sets of water inlet structures are respectively arranged obliquely above both sides of the buried pipe 101. The inclined arrangement of the two sets of water inlet structures helps to obtain a larger water inlet area.

[0121] Specifically, the two sets of water inlet side holes 103 are the preferred form of the water inlet structure. The two sets of water inlet side holes 103 can facilitate the water in the saline-alkali soil to enter the corresponding buried pipe 101;

[0122] The water guide groove 104 is a preferred form of water guide structure, and each water guide groove 104 can discharge the water in the corresponding buried pipe 101 outward;

[0123] Specifically, the angle between each set of water inlet side holes 103 and the embedding groove 102 is 45°, which can maximize the water in the saline-alkali soil to enter the inner cavity of the corresponding buried pipe 101;

[0124] Specifically, each annular connector 40 is used to connect the corresponding buried pipe 101 to the pipeline. In actual application, the size of the connected pipeline needs to be the same as the size of the buried pipe 101. At this time, the connected pipeline can be connected and fixed to the buried pipe 101 through the corresponding annular connector 40. When each buried pipe 101 is connected to the pipeline through the corresponding annular connector 40, the coverage of the salt drainage pipe can be further expanded in the horizontal and vertical directions.

[0125] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0126] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0127] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for draining salt from saline-alkali land through underground pipes, characterized in that: include: A cross-shaped pipeline structure (10), wherein the cross-shaped pipeline structure (10) is composed of four buried pipes (101), adjacent buried pipes (101) are perpendicular to each other, and the inner cavities of each buried pipe (101) are interconnected; The four buried pipes (101) are arranged in a cross shape; Each of the buried pipes (101) is provided with a water inlet structure; The bottom of the inner cavity of each buried pipe (101) is provided with a water guide structure; Four groups of water-permeable containers (20), each group of water-permeable containers (20) being installed on a corresponding buried pipe (101); and Four groups of purification components (30), each group of purification components (30) is installed in a corresponding water-permeable container (20).

2. The device for draining salt from saline-alkali land through concealed pipes according to claim 1, characterized in that: A plurality of embedding grooves (102) are provided on the side wall of each buried pipe (101); Each group of water-permeable containers (20) is detachably mounted in a corresponding mounting groove (102).

3. The device for draining salt from saline-alkali land through concealed pipes according to claim 2, characterized in that: Each group of the water-permeable containers (20) is provided with a plurality of them, and each of the water-permeable containers (20) is a water-permeable containing box (201); Each of the water-permeable housing boxes (201) is plugged and installed in a corresponding embedding groove (102), and after being plugged in, the bottom of the water-permeable housing box (201) is located in the inner cavity of the corresponding embedding groove (102); Each group of purification components (30) is detachably mounted in a corresponding water-permeable housing box (201).

4. The device for draining salt from saline-alkali land through concealed pipes according to claim 3, characterized in that: Each group of the purification components (30) is provided with a plurality of components, and each of the purification components (30) is a microbial agent package (301); Each of the microbial agent packages (301) is inserted into a corresponding water-permeable containing box (201).

5. The device for draining salt from saline-alkali land through concealed pipes according to claim 3, characterized in that: A plurality of water-permeable holes (202) are provided at the bottom of each water-permeable container (201).

6. The device for draining salt from saline-alkali land through concealed pipes according to claim 3, characterized in that: Both ends of the top of each of the water-permeable containing boxes (201) are integrally formed with side wings (203), and the bottom of each of the side wings (203) is provided with an arc-shaped groove portion (204); After the water-permeable housing box (201) is inserted and installed in the corresponding embedding groove (102), the two arc-shaped groove portions (204) can both fit with the surface of the corresponding buried pipe (101).

7. The device for draining salt from saline-alkali land through concealed pipes according to claim 4, characterized in that: The shape and size of the microbial agent package (301) are smaller than or equal to the shape and size of the inner cavity of the water-permeable containing box (201).

8. The device for draining salt from saline-alkali land through concealed pipes according to claim 1, characterized in that: Two groups of water inlet structures are provided on each buried pipe (101), and the two groups of water inlet structures are respectively provided obliquely above both sides of the buried pipe (101); The water guide structure provided at the bottom of the inner cavity of each buried pipe (101) is a water guide groove (104); Each of the water guide grooves (104) is opened at the bottom of the inner cavity of the corresponding buried pipe (101).

9. The device for draining salt from saline-alkali land through concealed pipes according to claim 8, characterized in that: Each set of water inlet structures comprises a plurality of water inlet side holes (103) opened on the buried pipe (101); The included angle between each group of water inlet side holes (103) and the embedding groove (102) is 45°.

10. The device for draining salt from saline-alkali land through concealed pipes according to claim 1, characterized in that: A ring-shaped connector (40) is fixedly mounted on the outer wall of the port of each buried pipe (101).

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