A saline-alkali land drainage and collection device

Abstract

The present invention belongs to the technical field of saline-alkali land improvement, and specifically provides a saline-alkali land drainage and collection device, including a top pressing plate. A drainage port runs through the center of the top pressing plate. An adsorption drilling assembly is provided at the center of the lower part of the top pressing plate. A magnetic power circulation drainage and collection assembly is arranged inside the adsorption drilling assembly. A water injection insertion rod is provided at the lower part of the top pressing plate, and the water injection insertion rods are circumferentially and evenly distributed outside the adsorption drilling assembly. By adopting the nesting principle and combining the electromagnetic principle, a magnetic power circulation drainage and collection assembly is set up. The negative pressure generated in the suction cavity circulates to suck the brine on the adsorption cotton strip, and the adsorption cotton strip continuously absorbs the brine in the saline-alkali soil, forming a local water cycle. The suction cavities arranged linearly in the vertical direction work synchronously, achieving the technical effect of synchronous drainage and collection of saline-alkali land soil in the longitudinal depth, accelerating the water cycle in the saline-alkali land soil, and improving the efficiency of saline-alkali land improvement.

Description

Technical Field

[0001] The present invention belongs to the technical field of saline-alkali land improvement, and specifically refers to a saline-alkali land water collection and drainage device. Background Art

[0002] Saline-alkali land is a type of salt accumulation, which means that the salt content in the soil affects the normal growth of crops and is not conducive to agricultural development. The fundamental reason for the formation of saline-alkali soil lies in the poor water condition. Therefore, in the initial stage of improvement, the focus should be on improving the water condition of the soil. For the restoration and improvement of saline-alkali land, physical restoration is one of the commonly used measures and means. Physical restoration is to apply the principle of water and salt movement, and for the water flow movement on the surface, in the soil body, and underground, take water conservancy measures to combine irrigation for salt washing and drainage for salt and alkali removal to reduce the salt content. Most of the existing saline-alkali land water collection and drainage devices adopt the method of pre-burying drainage pipes, which requires large-area excavation and construction of saline-alkali soil, with high costs, time-consuming and laborious, and relies on the natural flow of water in the saline-alkali soil for drainage, resulting in low efficiency; in addition, it is difficult to directly irrigate the deep soil of saline-alkali land, resulting in low salt drainage efficiency. Summary of the Invention

[0003] To solve the above existing problems, the present invention provides a saline-alkali land water collection and drainage device, which adopts the nesting principle and combines the electromagnetic principle, and sets up a magnetic force-driven circulating water collection and drainage component. The negative pressure generated in the suction cavity circulates to suck and adsorb the salt water on the adsorption cotton strip, and the adsorption cotton strip continuously absorbs the salt water in the saline-alkali soil, forming a local water cycle. The suction cavities arranged linearly in the vertical direction work synchronously, achieving the technical effect of synchronous water collection and drainage in the longitudinal depth of the saline-alkali land soil, accelerating the water cycle in the saline-alkali land soil, and improving the efficiency of saline-alkali land improvement; this device can be used in series with multiple groups, without the need for digging and backfilling of saline-alkali land, with convenient operation, and can drain salt water while irrigating, improving the salt drainage efficiency.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A saline-alkali land water collection and drainage device provided by the present invention includes a top pressing plate, a drainage port is provided through the center of the top pressing plate, an adsorption drilling assembly is provided at the lower center of the top pressing plate, a magnetic power circulation water collection and drainage assembly is provided inside the adsorption drilling assembly, the magnetic power circulation water collection and drainage assembly is arranged inside the drainage port, and a water injection rod is provided at the lower part of the top pressing plate. The water injection rods are circumferentially and evenly arranged outside the adsorption drilling assembly; wherein, the adsorption drilling assembly includes an outer housing, a pointed cone seat and a pull-out adsorption mechanism. The outer housing is arranged at the lower center of the top pressing plate. The outer housing is cylindrical, the pointed cone seat is arranged at the lower end of the outer housing, the pull-out adsorption mechanism is slidably arranged inside the outer housing, and the magnetic power circulation water collection and drainage assembly is arranged inside the pull-out adsorption mechanism; the magnetic power circulation water collection and drainage assembly includes a water collection inner shell, a water pumping rod and a circulating water absorption mechanism. The water collection inner shell is arranged above the pointed cone seat. The inside of the water collection inner shell is hollow. The water collection inner shell is arranged inside the drainage port. The circulating water absorption mechanism is rotatably arranged inside the water collection inner shell. The water pumping rod is arranged inside the circulating water absorption mechanism; during installation, the device is placed vertically, and the lower ends of the pointed cone seat and the water injection rod are inserted into the soil of the saline-alkali land. Press the top pressing plate or use tools such as a pile driver to act on the top pressing plate to completely insert the adsorption drilling assembly and the water injection rod into the saline-alkali land until the lower wall of the top pressing plate contacts the ground; in the saline-alkali land, multiple sets of the devices can be connected by a tee and a water pipe and arranged in a linear array for use, without the need for digging and backfilling work on the saline-alkali land, and the installation and use are convenient.

[0005] Further, the circulating water absorption mechanism includes a rotating motor, a rotating cylinder, a suction chamber, a drainage chamber, a fixed electromagnetic plate and a sliding magnet block. The rotating motor is embedded inside the pointed cone seat. The rotating motor is a stepping motor. The rotating cylinder is arranged at the output end of the rotating motor. The rotating cylinder is rotatably arranged inside the water collection inner shell. The suction chamber and the drainage chamber are respectively circumferentially and evenly arranged inside the rotating cylinder. The suction chamber penetrates through the side wall of the rotating cylinder. The suction chamber and the drainage chamber are arranged staggeredly with each other. The suction chamber is communicated with the drainage chamber. The circumferentially and evenly arranged suction chambers and drainage chambers are respectively linearly arrayed along the axis of the rotating cylinder. Flexible connecting plates are arranged at both side walls of the suction chamber near one end of the rotating cylinder. The flexible connecting plates are arranged at the communication position between the suction chamber and the drainage chamber. One end of the flexible connecting plate facing the inner side of the drainage chamber is attached to the inner wall of the rotating cylinder. The flexible connecting plate is made of silicone rubber material, which is easy to deform and has good sealing performance at the same time.

[0006] Further, the fixed electromagnetic plates are circumferentially and evenly embedded inside the rotating cylinder around the water pumping rod. The fixed electromagnetic plates penetrate through the side close to the water pumping rod inside the suction chamber. The sliding magnet block is slidably arranged inside the suction chamber. The outer side surface of the sliding magnet block is arc-shaped. The side wall of the sliding magnet block is slidably attached to the inner side wall of the suction chamber.

[0007] Further, a water pumping port is provided through the center of the upper end of the inner water collecting shell, a water pump is embedded in the upper part of the inner water collecting shell, the water outlet end of the water pump is connected to the water pumping port, the water pumping rod is connected to the suction end of the water pump, the lower end of the water pumping rod extends to the lower end of the rotating cylinder, a power-on ring is rotatably arranged on the outer side of the water pumping rod, the power-on ring is arranged at the upper end of the rotating cylinder, a driving battery is arranged inside the power-on ring, and the driving battery is electrically connected to a circumferentially evenly distributed fixed electromagnetic plate respectively.

[0008] Further, suction holes are circumferentially and evenly arranged on the side wall of the water pumping rod, and the circumferentially evenly arranged suction holes are linearly arrayed along the axis of the water pumping rod. In the initial state, the positions of the suction holes are correspondingly arranged with the suction cavities. A water collecting through groove is provided through the side wall of the rotating cylinder near the lower part of the side wall of the water pumping rod. When the rotating cylinder rotates by the angle formed by adjacent suction cavities in the circumferential direction, the water collecting through groove is communicated with the suction holes; through grooves are circumferentially and evenly arranged through the side wall of the inner water collecting shell, and the circumferentially evenly arranged through grooves are linearly arrayed along the axis of the inner water collecting shell. In the initial state, the through grooves are communicated with the suction cavities, a filter layer is arranged in the through grooves, the filter layer is made of fiber material, and the filter layer blocks large particle impurities such as soil.

[0009] Further, the pull-out type adsorption mechanism includes a sliding ring, an adsorption frame and an adsorption cotton strip. The sliding ring is movably sleeved on the outer side of the inner water collecting shell, handles are symmetrically arranged at the upper end of the sliding ring, the adsorption frames are circumferentially and evenly arranged at the lower part of the sliding ring, the adsorption frames move between the inner water collecting shell and the outer cover shell, the adsorption cotton strip is installed in the adsorption frames, and permeation through holes are circumferentially and evenly arranged through the outer wall of the outer cover shell. When the absorption efficiency of the adsorption cotton strip decreases, only need to pull out the pull-out type adsorption mechanism from between the inner water collecting shell and the outer cover shell through the handle, remove the used adsorption cotton strip, then reinstall a new adsorption cotton strip in the adsorption frames, and then press the pull-out type adsorption mechanism between the inner water collecting shell and the outer cover shell. There is no need to pull out the whole device from the soil, and the operation is convenient.

[0010] During use, the drive battery inside the energized ring energizes the fixed electromagnetic plate to generate magnetism. At this time, the magnetic poles of the fixed electromagnetic plate are the same as those of the sliding magnet block. Due to the electromagnetic repulsive force, the sliding magnet block is located at one end of the suction chamber close to the rotating cylinder. During operation, the direction of the current flowing through the fixed electromagnetic plate is changed, so that the magnetic poles of the fixed electromagnetic plate are different from those of the sliding magnet block. The fixed electromagnetic plate adsorbs the sliding magnet block, causing the sliding magnet block to slide from the outer end of the suction chamber towards the fixed electromagnetic plate, thereby producing a negative pressure adsorption effect, and thus sucking the brine on the absorbent cotton strip at the filter layer. When the sliding magnet block is adsorbed to the fixed electromagnetic plate, the rotating motor starts, driving the entire rotating cylinder to rotate around the water pumping rod. The rotation angle is the angle between two adjacent suction chambers that are evenly distributed in a circle. As the rotating cylinder rotates, the brine sucked into the suction chamber follows the suction chamber and rotates to the inner wall of the water collection inner shell. The brine is in the closed space formed by the inner wall of the water collection inner shell, the side wall of the suction chamber, and the flexible connecting plate. And the drainage chamber rotates to the filter layer. At this time, the water collection through groove in the drainage chamber is connected to the suction hole. Immediately afterwards, the direction of the current flowing through the fixed electromagnetic plate is changed, so that the magnetic poles of the fixed electromagnetic plate are different from those of the sliding magnet block. Under the action of the magnetic repulsive force, the fixed electromagnetic plate pushes the sliding magnet block away. Under the extrusion of the sliding magnet block, the brine in the suction chamber flushes open the flexible connecting plate made of silicone rubber and flows into the adjacent drainage chamber. The water in the drainage chamber flows into the suction hole through the water collection through groove. At the same time, the water pump starts to pump the brine inside through the water pumping rod; when the sliding magnet block slides and fits against the inner wall of the water collection inner shell, the rotating motor starts again, driving the entire rotating cylinder to rotate again, so that the suction chamber is connected to the liquid passing groove again, repeating the above process, using the negative pressure generated by the sliding of the sliding magnet block to cyclically suck the brine on the absorbent cotton strip, and the absorbent cotton strip continuously absorbs the brine in the saline-alkali soil, forming a local water cycle. The suction chambers arranged linearly in the vertical direction work synchronously, achieving the technical effect of synchronous water collection and drainage in the longitudinal depth of the saline-alkali soil, accelerating the water cycle in the saline-alkali soil, and improving the efficiency of saline-alkali soil improvement.

[0011] Preferably, the water injection insertion rod is of a hollow structure. The lower end of the water injection insertion rod is in a sharp cone shape. The outer wall of the water injection insertion rod is evenly distributed with water injection through holes in a circle. There is a water filling port on the upper wall of the top pressing plate. A water injection pump is arranged inside the top pressing plate. The water outlet ends of the water injection pump are respectively connected to the water injection insertion rods arranged in a circular array. The water inlet end of the water injection pump is connected to the water filling port. The water filling port is connected to an external fresh water tank. After the adsorption drilling assembly and the water injection insertion rod are completely inserted into the saline-alkali soil, the water injection pump is started. The water injection pump extracts external fresh water and sprays it out through the water injection through holes on the water injection insertion rods arranged in a circle, moistening the saline-alkali soil in the area around the adsorption drilling assembly, so that the deep soil is also irrigated. Subsequently, the brine flowing through the saline-alkali soil is absorbed by the absorbent cotton strip with stronger adsorption force through the permeation through holes. The absorbent cotton strip full of brine fits against the water collection inner shell.

[0012] The beneficial effects achieved by the present invention with the above structure are as follows:

[0013] 1. A saline-alkali land water collection and drainage device provided by the present invention adopts the nesting principle and combines the electromagnetic principle, and sets up a magnetic power circulation water collection and drainage component. The negative pressure generated in the suction cavity is used to cyclically suck and adsorb the salt water on the adsorption cotton strip, and the adsorption cotton strip continuously absorbs the salt water in the saline-alkali soil, forming a local water cycle. The suction cavities arranged in a linear array in the vertical direction work synchronously, achieving the technical effect of synchronously collecting and draining water in the longitudinal depth of the saline-alkali land soil, accelerating the water cycle in the saline-alkali land soil, and improving the efficiency of saline-alkali land improvement;

[0014] 2. The provided pull-out adsorption mechanism adopts a nested structure. When the absorption efficiency of the adsorption cotton strip decreases, only need to pull out the pull-out adsorption mechanism from between the water collection inner shell and the outer cover shell through the handle, reinstall and replace a new adsorption cotton strip in the adsorption frame, and then press the pull-out adsorption mechanism between the water collection inner shell and the outer cover shell. There is no need to pull out the whole device from the soil, and the operation is convenient;

[0015] 3. This device can be used in series with multiple groups, without the need for digging and backfilling work on saline-alkali land. The operation is convenient, and it can collect and drain salt water while irrigating, improving the salt drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a saline-alkali land water collection and drainage device provided by the present invention;

[0017] Figure 2 is an exploded structural diagram of the top pressing plate, the water injection plug, the magnetic power circulation water collection and drainage component and the pull-out adsorption mechanism;

[0018] Figure 3 is a schematic structural diagram of the pull-out adsorption mechanism;

[0019] Figure 4 is the front view of the combined structure of the magnetic power circulation water collection and drainage component and the tapered seat;

[0020] Figure 5 is a schematic diagram of the combined structure of the circulating water absorption mechanism;

[0021] Figure 6 is Figure 4 the sectional structural diagram at A-A in

[0022] Figure 7 is the internal structural diagram of the rotating cylinder, the suction cavity and the drainage cavity;

[0023] Figure 8 is Figure 4 the sectional structural diagram at B-B in

[0024] Figure 9 is Figure 6Schematic diagram of the partial enlarged structure at position C in the [specific object].

[0025] Among them, 1 is the top pressing plate, 11 is the water injection port, 12 is the drainage port, 2 is the magnetic power circulation water collection and drainage assembly, 21 is the inner water collection shell, 22 is the rotating motor, 23 is the circulating water suction mechanism, 231 is the rotating cylinder, 232 is the suction cavity, 233 is the drainage cavity, 234 is the flexible connecting plate, 235 is the fixed electromagnetic plate, 236 is the sliding magnetic block, 237 is the water collection through groove, 238 is the energized ring, 24 is the water pumping rod, 241 is the suction hole, 25 is the water pump, 26 is the liquid passage groove, 27 is the filter layer, 28 is the water pumping port, 3 is the adsorption drilling assembly, 31 is the outer housing, 32 is the tapered seat, 33 is the pull-out adsorption mechanism, 331 is the sliding ring, 332 is the adsorption frame, 333 is the adsorption cotton strip, 334 is the handle, 34 is the penetration through hole, 4 is the water injection insertion rod, and 41 is the water injection through hole. Specific embodiments

[0026] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments. Parts of the technical features or connection relationships of the present invention that are not described in detail are all prior arts adopted.

[0027] The following further describes the present invention in detail with reference to the accompanying drawings.

[0028] As Figures 1 - 9 shown, a saline-alkali land water collection and drainage device provided by the present invention includes a top pressing plate 1. A drainage port 12 penetrates through the center of the top pressing plate 1. An adsorption drilling assembly 3 is provided at the center of the lower part of the top pressing plate 1. A magnetic power circulation water collection and drainage assembly 2 is arranged inside the adsorption drilling assembly 3. The magnetic power circulation water collection and drainage assembly 2 is arranged inside the drainage port 12. A water injection insertion rod 4 is arranged at the lower part of the top pressing plate 1. The water injection insertion rods 4 are circumferentially and evenly distributed outside the adsorption drilling assembly 3. The water injection insertion rod 4 is a hollow structure. The lower end of the water injection insertion rod 4 is in a tapered shape. Water injection through holes 41 are circumferentially and evenly distributed and penetrate through the outer wall of the water injection insertion rod 4. A water injection port 11 is arranged on the upper wall of the top pressing plate 1. A water injection pump is arranged inside the top pressing plate 1. The water outlet ends of the water injection pump are respectively communicated with the circumferentially arrayed water injection insertion rods 4. The water inlet end of the water injection pump is connected to the water injection port 11. The water injection port 11 is externally connected to a water pipe. Starting the water injection pump can spray external fresh water through the water injection through holes 41 on the water injection insertion rod 4, which can act on the deep soil of the saline-alkali land;

[0029] Among them, the adsorption drilling assembly 3 includes an outer housing 31. The outer housing 31 is arranged at the lower center of the top pressing plate 1. The outer housing 31 is cylindrical. A pointed cone seat 32 is provided at the lower end of the outer housing 31. Penetration through holes 34 are uniformly distributed and penetrated through the outer wall circumference of the outer housing 31. A pull-out adsorption mechanism 33 is slidably arranged inside the outer housing 31. The magnetic force circulation water collection and drainage assembly 2 is arranged inside the pull-out adsorption mechanism 33. The magnetic force circulation water collection and drainage assembly 2 includes a water collection inner shell 21. The water collection inner shell 21 is arranged above the pointed cone seat 32. The inside of the water collection inner shell 21 is hollow. The water collection inner shell 21 is arranged inside the drain port 12. A circulating water absorption mechanism 23 is rotatably arranged inside the water collection inner shell 21. A water pumping rod 24 is arranged inside the circulating water absorption mechanism 23.

[0030] The pull-out adsorption mechanism 33 includes a sliding ring 331. The sliding ring 331 is movably sleeved outside the water collection inner shell 21. Handlebars 334 are symmetrically arranged at the upper end of the sliding ring 331. Adsorption frames 332 are uniformly distributed on the lower circumference of the sliding ring 331. The adsorption frames 332 move between the water collection inner shell 21 and the outer housing 31. Adsorption cotton strips 333 are installed inside the adsorption frames 332. The moisture in the saline-alkali soil is adsorbed by the adsorption cotton strips 333 through the penetration through holes 34. The pull-out adsorption mechanism 33 can be taken out between the water collection inner shell 21 and the outer housing 31 through the handlebars 334, which is convenient for replacing the adsorption cotton strips 333 and improving the adsorption efficiency of the moisture in the saline-alkali soil.

[0031] Liquid through grooves 26 are uniformly distributed and penetrated through the side wall circumference of the water collection inner shell 21. The circumferentially uniformly distributed liquid through grooves 26 are linearly arrayed along the axis of the water collection inner shell 21. A filter layer 27 is arranged inside the liquid through grooves 26. The filter layer 27 is made of fiber material. The filter layer 27 is in direct contact with the adsorption cotton strips 333. A water pumping port 28 is penetrated through the center of the upper end of the water collection inner shell 21. A water pump 25 is embedded in the upper part of the water collection inner shell 21. The water outlet end of the water pump 25 is connected to the water pumping port 28. The water pumping rod 24 is connected to the suction end of the water pump 25. Suction holes 241 are uniformly distributed on the side wall circumference of the water pumping rod 24. The circumferentially uniformly distributed suction holes 241 are linearly arrayed along the axis of the water pumping rod 24.

[0032] The cyclic water absorption mechanism 23 includes a rotating motor 22 and a rotating cylinder 231. The rotating motor 22 is embedded inside the tapered seat 32. The rotating cylinder 231 is provided at the output end of the rotating motor 22. The rotating cylinder 231 is rotatably arranged inside the water collection inner shell 21. Inside the rotating cylinder 231, a suction cavity 232 and a drainage cavity 233 are respectively arranged in a circumferentially uniform distribution. The suction cavity 232 penetrates through the side wall of the rotating cylinder 231. The suction cavity 232 and the drainage cavity 233 are arranged staggeredly with each other. The suction cavity 232 communicates with the drainage cavity 233. The circumferentially uniformly distributed suction cavities 232 and drainage cavities 233 are respectively arranged in a linear array along the axis of the rotating cylinder 231. At both side walls of the suction cavity 232 near one end of the rotating cylinder 231, there are flexible connecting plates 234. The flexible connecting plates 234 are arranged at the communication position between the suction cavity 232 and the drainage cavity 233. One end of the flexible connecting plate 234 facing the inner side of the drainage cavity 233 is attached to the inner wall of the rotating cylinder 231. The flexible connecting plate 234 is made of silicone rubber material;

[0033] Inside the rotating cylinder 231, fixed electromagnetic plates 235 are embedded in a circumferentially uniform distribution around the water pumping rod 24. The fixed electromagnetic plates 235 penetrate through and are arranged on one side of the suction cavity 232 close to the water pumping rod 24. Inside the suction cavity 232, a sliding magnetic block 236 is slidably arranged. The outer side surface of the sliding magnetic block 236 is an arc surface, which fits with the outer side wall of the rotating cylinder 231. The side wall of the sliding magnetic block 236 is slidably attached to the inner side wall of the suction cavity 232; The lower end of the water pumping rod 24 extends to the lower end of the rotating cylinder 231. An energized ring 238 is rotatably arranged on the outer side of the water pumping rod 24. The energized ring 238 is arranged at the upper end of the rotating cylinder 231. Inside the energized ring 238, there is a driving battery. The driving battery is electrically connected to the circumferentially uniform fixed electromagnetic plates 235 respectively;

[0034] At the lower part of the side wall of the drainage cavity 233 close to the water pumping rod 24, a water collection through groove 237 penetrates through the rotating cylinder 231. In the initial state, the position of the suction hole 241 corresponds to the suction cavity 232. The liquid through groove 26 communicates with the suction cavity 232. When the rotating cylinder 231 rotates by an angle formed by adjacent suction cavities 232 in the circumferential direction, the water collection through groove 237 communicates with the suction hole 241.

[0035] Working principle and working process:

[0036] During specific use, place the device vertically, insert the tip cone seat 32 and the lower end of the water injection rod 4 into the soil of the saline-alkali land, press the top pressing plate 1 or use tools such as a pile driver to act on the top pressing plate 1 to completely insert the adsorption drilling assembly 3 and the water injection rod 4 into the saline-alkali land until the lower wall of the top pressing plate 1 contacts the ground. Subsequently, connect the water filling port 11 and the water pumping port 28 to external water pipes respectively. The water filling port 11 is connected to an external fresh water tank, and the water pumping port 28 is connected to an external saline water treatment tank; in the saline-alkali land, multiple sets of this device can be connected using a tee and a water pipe and arranged in a linear array for use. Multiple water filling ports 11 are connected together, and multiple water pumping ports 28 are connected together, eliminating the need for digging and backfilling work on the saline-alkali land, making it convenient to use.

[0037] After completely inserting the adsorption drilling assembly 3 and the water injection rod 4 into the saline-alkali land soil, start the water injection pump. The water injection pump extracts external fresh water and sprays it out through the water injection through holes 41 on the circumferentially evenly distributed water injection rods 4 to moisten the saline-alkali soil in the area around the adsorption drilling assembly 3, so that the deep soil is also irrigated. Subsequently, the saline water flowing through the saline-alkali soil is absorbed by the adsorption cotton strips 333 with stronger adsorption force through the permeation through holes 34, and the adsorption cotton strips 333 filled with saline water are attached to the inner water collection shell 21;

[0038] In the initial state, the liquid passage groove 26 is in communication with the suction chamber 232. The driving battery in the energized ring 238 energizes the fixed electromagnetic plate 235 to generate magnetism. At this time, the magnetic poles of the fixed electromagnetic plate 235 are the same as those of the sliding magnet block 236. Due to the electromagnetic repulsive force, the sliding magnet block 236 is located at one end of the suction chamber 232 close to the rotating cylinder 231. During operation, the direction of the current flowing through the fixed electromagnetic plate 235 is changed, so that the magnetic poles of the fixed electromagnetic plate 235 are different from those of the sliding magnet block 236. The fixed electromagnetic plate 235 adsorbs the sliding magnet block 236, causing the sliding magnet block 236 to slide from the end of the suction chamber 232 towards the fixed electromagnetic plate 235, thereby sucking the brine on the absorbent cotton strip 333 at the filter layer 27. The filter layer 27 blocks large particle impurities such as soil. When the sliding magnet block 236 is adsorbed to the fixed electromagnetic plate 235, the rotating motor 22 is started, driving the entire rotating cylinder 231 to rotate around the water pumping rod 24. The rotation angle is the angle between two adjacent suction chambers 232 that are evenly distributed in a circle. As the rotating cylinder 231 rotates, the brine sucked into the suction chamber 232 follows the suction chamber 232 and rotates to the inner wall of the water collection inner shell 21. The brine is in the closed space formed by the inner wall of the water collection inner shell 21, the side wall of the suction chamber 232, and the flexible connecting plate 234. And the drainage chamber 233 rotates to the position of the filter layer 27. At this time, the water collection through groove 237 in the drainage chamber 233 is in communication with the suction hole 241. Immediately afterwards, the direction of the current flowing through the fixed electromagnetic plate 235 is changed, so that the magnetic poles of the fixed electromagnetic plate 235 are different from those of the sliding magnet block 236. Under the action of the magnetic repulsive force, the fixed electromagnetic plate 235 pushes the sliding magnet block 236 away. Under the extrusion of the sliding magnet block 236, the brine in the suction chamber 232 flushes open the flexible connecting plate 234 made of silicone rubber and flows into the adjacent drainage chamber 233. The water in the drainage chamber 233 flows into the suction hole 241 through the water collection through groove 237. At the same time, the water pump 25 is started to pump the internal brine through the water pumping rod 24;

[0039] When the sliding magnet block 236 slides and fits against the inner wall of the water collection inner shell 21, the rotating motor 22 is started again to drive the entire rotating cylinder 231 to rotate, so that the suction chamber 232 is in communication with the liquid passage groove 26 again. The above process is repeated to cyclically suck the brine on the absorbent cotton strip 333 by using the negative pressure generated by the sliding of the sliding magnet block 236. And the absorbent cotton strip 333 continuously absorbs the brine in the saline-alkali soil, forming a local water cycle. The suction chambers 232 arranged linearly in the vertical direction work synchronously, achieving the technical effect of synchronously collecting and draining the saline-alkali soil in the longitudinal depth, accelerating the water cycle in the saline-alkali soil, and improving the efficiency of saline-alkali soil improvement.

[0040] When the absorption efficiency of the adsorption cotton strip 333 decreases after the device has been used for a period of time, simply pull out the drawable adsorption mechanism 33 from between the water collecting inner shell 21 and the outer cover shell 31 through the handle 334, remove the used adsorption cotton strip 333, reinstall a new adsorption cotton strip 333 in the adsorption rack 332, and then press the drawable adsorption mechanism 33 between the water collecting inner shell 21 and the outer cover shell 31. There is no need to pull out the whole device from the soil, and the operation is convenient.

[0041] It should be noted that during the process of inserting the water injection rod 4 into the soil, even if part of the soil enters the inside of the water injection rod 4 through the water injection through holes 41, it does not affect the water injection effect of the water injection rod 4 into the saline-alkali land. The impact of the high-pressure water flow can wash out the soil in the water injection rod 4. The use of the drive battery, the stepper motor, the water pump 25 and the water injection pump is the prior art and will not be elaborated here.

[0042] The above is the overall working process of the present invention. Just repeat these steps during the next use.

[0043] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0044] The present invention and its embodiments have been described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the purpose of the present invention, they design similar structural modes and embodiments to this technical solution without creative efforts, and all should belong to the protection scope of the present invention.

Claims

1. A saline-alkali land drainage device, comprising a top pressure plate (1), wherein a drainage port (12) is provided through the center of the top pressure plate (1), and characterized in that: An adsorption-type drilling assembly (3) is provided at the center of the lower part of the top pressure plate (1), a magnetic power circulation drainage assembly (2) is provided inside the adsorption-type drilling assembly (3), the magnetic power circulation drainage assembly (2) is arranged on the inner side of the drainage port (12), a water injection rod (4) is provided at the lower part of the top pressure plate (1), and the water injection rod (4) is evenly arranged on the outer side of the adsorption-type drilling assembly (3) on the circumference; The adsorption-type drilling assembly (3) comprises an outer cover shell (31), a pointed cone seat (32) and a pull-out type adsorption mechanism (33); the outer cover shell (31) is arranged at the lower center of the top pressure plate (1); the outer cover shell (31) is cylindrical; the pointed cone seat (32) is arranged at the lower end of the outer cover shell (31); the pull-out type adsorption mechanism (33) is slidably arranged on the inner side of the outer cover shell (31); and the magnetic power circulation drainage assembly (2) is arranged on the inner side of the pull-out type adsorption mechanism (33); The magnetic power circulating water collection and drainage assembly (2) comprises a water collection inner shell (21), a water pumping rod (24) and a circulating water absorption mechanism (23); the water collection inner shell (21) is arranged on the upper part of the pointed cone seat (32); the water collection inner shell (21) is hollow inside; the water collection inner shell (21) is arranged on the inner side of the drainage port (12); the circulating water absorption mechanism (23) is rotatably arranged inside the water collection inner shell (21); and the water pumping rod (24) is arranged on the inner side of the circulating water absorption mechanism (23); The circulating water absorption mechanism (23) comprises a rotating motor (22), a rotating cylinder (231), a suction chamber (232), a drainage chamber (233), a fixed electromagnetic plate (235) and a sliding magnetic block (236); the rotating motor (22) is embedded in the interior of the pointed cone seat (32); the rotating cylinder (231) is disposed at the output end of the rotating motor (22); the rotating cylinder (231) is rotatably disposed in the interior of the water collecting inner shell (21); the suction chamber (232) and the drainage chamber (233) are respectively and evenly arranged in a circumference in the interior of the rotating cylinder (231); the suction chamber (232) passes through the side of the rotating cylinder (231); The suction chamber (232) and the drainage chamber (233) are arranged in a staggered manner, the suction chamber (232) and the drainage chamber (233) are connected to each other, the suction chamber (232) and the drainage chamber (233) are evenly distributed around the circumference and are arranged in a linear array along the axis of the rotating cylinder (231), and flexible straps (234) are provided at one end of the two side walls of the suction chamber (232) close to the rotating cylinder (231), the flexible straps (234) are arranged at the connection between the suction chamber (232) and the drainage chamber (233), and one end of the flexible straps (234) facing the inner side of the drainage chamber (233) is attached to the inner wall of the rotating cylinder (231); Suction holes (241) are evenly distributed on the circumference of the side wall of the pumping rod (24), and the suction holes (241) are arranged in a linear array along the axis of the pumping rod (24). In an initial state, the positions of the suction holes (241) are arranged corresponding to the suction chambers (232). A water collecting groove (237) is provided at the lower part of the side wall of the drainage chamber (233) near the pumping rod (24) and penetrating the rotating cylinder (231). When the rotating cylinder (231) rotates at an angle formed by adjacent suction chambers (232) in the circumferential direction, the water collecting groove (237) is connected to the suction holes (241).

2. A saline-alkali land drainage device according to claim 1, characterized in that: The fixed electromagnetic plates (235) are evenly distributed around the circumference of the water pumping rod (24) and embedded in the interior of the rotating cylinder (231); the fixed electromagnetic plates (235) are arranged through the suction chamber (232) on a side close to the water pumping rod (24); the sliding magnetic block (236) is slidably arranged in the interior of the suction chamber (232); the outer side surface of the sliding magnetic block (236) is an arc surface; and the side wall of the sliding magnetic block (236) is slidably fitted with the inner side wall of the suction chamber (232).

3. A saline-alkali land drainage device according to claim 2, characterized in that: A water suction port (28) is provided through the center of the upper end of the water collecting inner shell (21); a water pump (25) is embedded in the upper part of the water collecting inner shell (21); the water outlet end of the water pump (25) is connected to the water suction port (28); the water suction rod (24) is connected to the suction end of the water suction pump (25); the lower end of the water suction rod (24) extends to the lower end of the rotating cylinder (231); an electric ring (238) is rotatably provided on the outer side of the water suction rod (24); the electric ring (238) is provided at the upper end of the rotating cylinder (231); a driving battery is provided inside the electric ring (238); the driving batteries are respectively electrically connected to fixed electromagnetic plates (235) evenly distributed around the circumference.

4. A saline-alkali land drainage device according to claim 3, characterized in that: Liquid-passing grooves (26) are evenly distributed around the circumference of the side wall of the water-collecting inner shell (21), and the evenly distributed liquid-passing grooves (26) are arranged in a linear array along the axis of the water-collecting inner shell (21). In an initial state, the liquid-passing grooves (26) are connected to the suction chamber (232), and a filter layer (27) is provided in the liquid-passing grooves (26).

5. A saline-alkali land drainage device according to claim 4, characterized in that: The pull-out type adsorption mechanism (33) comprises a sliding ring (331), an adsorption frame (332) and an adsorption cotton strip (333); the sliding ring (331) is movably sleeved on the outside of the water collecting inner shell (21); a handle (334) is symmetrically provided at the upper end of the sliding ring (331); the adsorption frame (332) is evenly distributed around the circumference of the lower part of the sliding ring (331); the adsorption frame (332) moves between the water collecting inner shell (21) and the outer cover shell (31); the adsorption cotton strip (333) is installed in the adsorption frame (332); and the outer wall of the outer cover shell (31) is evenly distributed around the circumference with penetration holes (34).

6. A saline-alkali land drainage device according to claim 5, characterized in that: The water injection rod (4) is a hollow structure, the lower end of the water injection rod (4) is in a pointed cone shape, the outer wall of the water injection rod (4) is circumferentially evenly penetrated with water injection holes (41), the upper wall of the top pressure plate (1) is provided with a water filling port (11), the interior of the top pressure plate (1) is provided with a water injection pump, the water outlet end of the water injection pump is respectively connected to the water injection rods (4) in the circumferential array, and the water inlet end of the water injection pump is connected to the water filling port (11).

7. A saline-alkali land drainage device according to claim 6, characterized in that: The flexible strap (234) is made of silicone rubber, and the filter layer (27) is made of fiber material.

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