A saline-alkali soil drainage and salt discharge underground pipe laying structure

Abstract

The utility model relates to saline and alkaline land drainage technical field discloses a kind of saline and alkaline land drainage salt discharge buried pipe laying structure, including water-collecting well, the shallow main buried pipe is fixedly connected in the water-collecting well top left side, the deep main buried pipe is fixedly connected in the water-collecting well bottom left side, the shallow main buried pipe front side is fixedly connected with shallow branch buried pipe one, the shallow main buried pipe rear side is fixedly connected with shallow branch buried pipe two, the deep main buried pipe rear side is fixedly connected with deep branch buried pipe two, the deep main buried pipe front side is fixedly connected with deep branch buried pipe one, cleaning mechanism is provided in the deep branch buried pipe one inside.The utility model, after external soil water is filtered by filter layer and is filtered, flows through branch buried pipe and enters main buried pipe, realizes to make tillage layer salt drop, guarantees the purpose of crop root system environment, accumulated water is finally collected to water-collecting well, water in water-collecting well is discharged to external water body by drainage pump, and the balanced drainage of device is realized.

Description

Technical Field

[0001] This utility model relates to the field of saline-alkali land drainage technology, and in particular to a structure for laying underground drainage and salt removal pipes in saline-alkali land. Background Technology

[0002] Saline-alkali land is a type of salt accumulation, referring to soil where the salt content affects the normal growth of crops. The formation of alkaline soil in my country is mostly related to the accumulation of carbonates in the soil, resulting in generally high levels. In severely saline-alkali soil areas, plants can hardly survive. The underground drainage and salt removal pipe structure can effectively alleviate this phenomenon. The underground drainage and salt removal pipe structure, through the burial of porous pipe systems in the ground, combined with leaching irrigation, can directionally discharge salts and excess water from the soil out of the field.

[0003] A search revealed Chinese Patent Publication No. CN21405930769U. This application relates to a drainage system for saline-alkali land, comprising: a water channel, constructed on the ground and located beside the saline-alkali land, for transporting irrigation water; an irrigation device, installed on the ground, for irrigating the saline-alkali land with the irrigation water from the water channel; an infiltration pipe, buried in the soil layer of the saline-alkali land, through which irrigation water, carrying salt, infiltrates into the infiltration pipe; a collection well, constructed on the ground, for collecting the brine infiltrated into the infiltration pipe, the top of the collection well being fitted with a well cover, the well cover having vent holes; and a drainage device for discharging the brine collected in the collection well. This application has the effect of conveniently draining the brine from the soil of saline-alkali land.

[0004] However, in practical applications, the above-mentioned drainage pipes adopt a single pipe design and lack adaptability to the uneven distribution of soil salinity, which can easily lead to uneven drainage effect. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a buried pipe laying structure for drainage and salt removal in saline-alkali land, aiming to improve the problem of uneven drainage effect caused by the single structure of existing pipes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drainage and salt removal underground pipe laying structure for saline-alkali land, including a water collection well, a shallow main underground pipe fixedly connected to the top left side of the water collection well, a deep main underground pipe fixedly connected to the bottom left side of the water collection well, a shallow branch underground pipe one fixedly connected to the front side of the shallow main underground pipe, a shallow branch underground pipe two fixedly connected to the rear side of the shallow main underground pipe, a deep branch underground pipe two fixedly connected to the rear side of the deep main underground pipe, a deep branch underground pipe one fixedly connected to the front side of the deep main underground pipe, and a cleaning mechanism is provided inside the deep branch underground pipe one.

[0007] Through the above technical solution: The upper layer of underground pipes is used to drain salt and water from the shallow soil, while the lower layer is used to drain salt and water from the deep soil, thereby further improving drainage efficiency. This double-layer underground pipe design improves the efficiency and uniformity of drainage and salt removal in saline-alkali land. As a further description of the above technical solution: Preferably, the cleaning mechanism includes a conical guide shroud, the front side of which is rotatably connected to a deep branch pipe, a hollow pipe fixedly connected to the rear side of which, a connecting piece fixedly connected to the surface of which, and hard bristles fixedly connected to the surface of which.

[0008] Through the above technical solution: The internal water flow drives the turbine blades to rotate, and the bristles can remove biofilm and crystalline salts attached to the inner wall of the pipe, while preventing silt and sand from accumulating and clogging the bottom of the pipe.

[0009] As a further description of the above technical solution: Preferably, a well cover is installed on the top of the water collection well, and soil salinity sensors are installed at the bottom of the shallow branch pipe one, the deep branch pipe one, the shallow branch pipe two, and the deep branch pipe two.

[0010] Through the above technical solution: Soil salinity sensors can collect real-time salinity data by measuring the soil conductivity of different soil layers. Based on the data from the salinity sensors, the amount of leaching water can be calculated, thus avoiding water waste caused by blind irrigation.

[0011] As a further description of the above technical solution: Preferably, a drainage pump is provided on the middle side of the top of the manhole cover, a drainage pipe is fixedly connected to the surface of the drainage pump, and a water level sensor is provided on the front side of the top of the manhole cover.

[0012] Through the above technical solution: Water level sensors can determine when to start the drainage system by continuously monitoring the water level in the collection well, thus avoiding excessive water pressure on the underground pipes due to long-term high water level operation and reducing the risk of pipe fatigue and joint leakage.

[0013] As a further description of the above technical solution: Preferably, a filter layer is fixedly connected to the surface of each of the shallow branch pipe one, deep branch pipe one, shallow branch pipe two, and deep branch pipe two.

[0014] Through the above technical solution: The underground pipes in the device are all made of high-density polyethylene, which has a certain degree of flexibility and can adapt to foundation settlement or external pressure deformation.

[0015] As a further description of the above technical solution: Preferably, turbine blades are fixedly connected to the surface of the hollow tube, and the front surface of the turbine blades is in contact with the rear surface of the conical shroud.

[0016] Through the above technical solution: Setting a conical guide shield upstream of the turbine can increase the water flow velocity, thereby ensuring that effective torque can still be generated even when the flow velocity inside the branch pipe is low.

[0017] As a further description of the above technical solution: Preferably, soft bristles are fixedly connected to the surface of the hard bristles, and the surface of the hard bristles is in contact with the inner wall of the deep branch pipe.

[0018] Through the above technical solution: The soft bristles are made of silicone, which has good corrosion resistance and temperature resistance, while the hard bristles are made of nylon, which has good wear resistance, bending strength and hydrolysis resistance. The combined effect of the soft and hard bristles can reduce the mechanical wear of the pipeline and extend its service life.

[0019] As a further description of the above technical solution: Preferably, the surface of each of the shallow branch pipe one, deep branch pipe one, shallow branch pipe two, and deep branch pipe two is provided with a water inlet hole, which is used to collect external soil water.

[0020] Through the above technical solution: The device collects external soil water through the inlet hole and gathers the external soil water inside the device through branch pipes and underground pipes, so that the external soil water can be collected in the water collection well and finally discharged.

[0021] This utility model has the following beneficial effects: 1. In this utility model, the salt and water in the deep soil are filtered through the filter layer and then flow through the deep branch pipe one and deep branch pipe two into the deep main pipe. Similarly, the salt and water in the shallow soil are filtered and then flow through the shallow branch pipe one and shallow branch pipe two into the shallow main pipe. This achieves the purpose of reducing the salinity of the cultivated layer and protecting the crop root environment. The accumulated water is finally collected in the collection well, and the water in the collection well is discharged to the external water body by the drainage pump, thus achieving balanced drainage of the device.

[0022] 2. In this utility model, by equipping the device with a cleaning mechanism, the device can perform self-cleaning after irrigation or rainfall. Soil seepage water penetrates the filter layer and enters the inside of the pipe. The water flow is accelerated by the conical guide shroud and impacts the turbine blades. The rotation of the turbine blades drives the hollow tube to rotate, which in turn drives the soft bristles and hard bristles to rotate together, thereby cleaning the pipe wall and effectively ensuring the operating efficiency of the device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a buried pipe laying structure for drainage and salt removal in saline-alkali land proposed in this utility model. Figure 2 This is a schematic diagram of the top three-dimensional structure of a buried pipe laying structure for drainage and salt removal in saline-alkali land proposed in this utility model. Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic cross-sectional view of a branch pipe of a drainage and salt removal underground pipe laying structure for saline-alkali land proposed in this utility model.

[0024] Legend: 1. Water collection well; 2. Shallow main underground pipe; 3. Shallow branch underground pipe one; 4. Deep main underground pipe; 5. Deep branch underground pipe one; 6. Soil salinity sensor; 7. Water level sensor; 8. Drainage pump; 9. Well cover; 10. Filter layer; 11. Drainage pipe; 12. Shallow branch underground pipe two; 13. Deep branch underground pipe two; 14. Cleaning mechanism; 1401. Hollow pipe; 1402. Turbine blade; 1403. Connecting piece; 1404. Soft bristles; 1405. Hard bristles; 1406. Conical guide shield. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figures 1-3An embodiment of this utility model provides a drainage and salt removal underground pipe laying structure for saline-alkali land, including a water collection well 1, a shallow main underground pipe 2 fixedly connected to the top left side of the water collection well 1, a deep main underground pipe 4 fixedly connected to the bottom left side of the water collection well 1, a shallow branch underground pipe 3 fixedly connected to the front side of the shallow main underground pipe 2, a shallow branch underground pipe 2 12 fixedly connected to the rear side of the shallow main underground pipe 2, a deep branch underground pipe 2 13 fixedly connected to the rear side of the deep main underground pipe 4, a deep branch underground pipe 5 fixedly connected to the front side of the deep main underground pipe 4, and a cleaning mechanism 14 is provided inside the deep branch underground pipe 5; The shallow soil of saline-alkali land is usually poorly permeable and has a high clay content. The shallow underground pipes use flat seepage pipes. The cross-section of the flat pipe has a large width-to-height ratio, which can increase the seepage area and accelerate the horizontal migration of shallow water and dissolved salts. The short-term salt accumulation problem can be solved by draining water immediately after irrigation through the shallow main underground pipe 2, shallow branch underground pipe 1 3 and shallow branch underground pipe 2 12. The deep soil of saline-alkali land is mostly sandy interlayer or high permeability zone. Salt can be drained over a large area through the deep main underground pipe 4, deep branch underground pipe 1 5 and deep branch underground pipe 2 13 to avoid regional salinization. On the other hand, the shallow main pipe 2, shallow branch pipe 1 3 and shallow branch pipe 2 12 can bear the high load of salt transport and protect the deep pipe from short-term high salt impact. The deep main pipe 4, deep branch pipe 1 5 and deep branch pipe 2 13 can reduce the drainage pressure of the shallow main pipe 2, shallow branch pipe 1 3 and shallow branch pipe 2 12, reduce the risk of siltation, and thus extend the service life of the device to a certain extent.

[0027] Reference Figures 3-4 The cleaning mechanism 14 includes a conical guide shroud 1406, the front side of which is rotatably connected to the deep branch pipe 5, and a hollow tube 1401 is fixedly connected to the rear side of the conical guide shroud 1406. A connecting piece 1403 is fixedly connected to the surface of the hollow tube 1401, and a hard brush bristle 1405 is fixedly connected to the surface of the connecting piece 1403. The soft bristles 1404 adhere to the pipe wall with high elasticity, effectively cleaning fine particles such as clay or biofilm with weak adhesion, thus preventing clogging and maintaining permeability. The hard bristles 1405 scrape the pipe wall with high rigidity, removing stubborn clumps such as hardened salt scale and calcium deposits, thereby repairing the permeable holes, restoring drainage capacity, and ensuring the long-term smooth operation of the underground pipe.

[0028] Reference Figure 1The top of the collection well 1 is equipped with a well cover 9. Soil salinity sensors 6 are installed at the bottom of the shallow branch underground pipe 1 3, the deep branch underground pipe 1 5, the shallow branch underground pipe 2 12, and the deep branch underground pipe 2 13. The collection well 1 can be opened through the well cover 9 to observe the internal condition of the collection well 1 and clean the sediment inside the collection well 1 in a timely manner. During the daily operation of the device, the soil salinity can be monitored in real time through the soil salinity sensor 6, providing data support for the operation of the drainage system.

[0029] Reference Figure 1 A drainage pump 8 is installed on the top center side of the manhole cover 9, and a drainage pipe 11 is fixedly connected to the surface of the drainage pump 8. A water level sensor 7 is installed on the front top side of the manhole cover 9. The drainage pump 8 can pump out the water accumulated inside the collection well 1 and discharge it to the external water body through the drainage pipe 11. The water level sensor 7 can monitor the water level inside the collection well 1. The soil salinity sensor 6 and the water level sensor 7 can monitor the changes in soil salinity and groundwater level in real time, providing long-term monitoring of the device and thus ensuring the drainage effect of the device.

[0030] Reference Figure 3 The surface of shallow branch pipe 13, deep branch pipe 15, shallow branch pipe 212, and deep branch pipe 213 are all fixedly connected with filter layers 10. The filter layers 10 can maintain the water permeability of the pipes and prevent soil particles from clogging the pipe pores. The shallow main pipe 2, shallow branch pipe 13, deep main pipe 4, deep branch pipe 15, shallow branch pipe 212, and deep branch pipe 213 are made of high-density polyethylene material. High-density polyethylene material has the characteristics of corrosion resistance and high compressive strength. The inner wall of the pipe made of high-density polyethylene material has a low coefficient of friction, is resistant to mud and sand erosion, has a low wear rate of inner wall after long-term use, is lightweight, and has impact resistance, which can improve the service life of the device.

[0031] Reference Figure 4 A turbine blade 1402 is fixedly connected to the surface of the hollow tube 1401. The front surface of the turbine blade 1402 is in contact with the rear surface of the conical guide shroud 1406. Since there is always flowing water inside the pipe, the turbine blade 1402 can convert the flow rate and pressure of the water into the driving force for self-cleaning of the pipe.

[0032] Reference Figure 4 The surface of the hard bristles 1405 is fixedly connected to the soft bristles 1404. The surface of the hard bristles 1405 is in contact with the inner wall of the deep branch pipe 5. The soft bristles 1404 contact the pipe wall first, reducing the wear of the hard bristles 1405 on the pipe. The hard bristles 1405 only apply pressure when encountering stubborn deposits, thereby avoiding continuous high pressure damage to the inner wall of the pipe.

[0033] Reference Figure 2The surface of shallow branch underground pipe 13, deep branch underground pipe 15, shallow branch underground pipe 212 and deep branch underground pipe 213 are all provided with water inlet holes. The water inlet holes are used to collect external soil water. After the external soil water is filtered through the filter layer 10, the external soil water enters the pipe through the opening in the pipe wall and flows into the water collection well 1 along the pipe direction, thereby realizing the collection of external soil water.

[0034] Working principle: During operation, the salt and water in the deep soil of saline-alkali land permeate and filter through the filter layer 10, flow through the deep branch underground pipe 1 5 and the deep branch underground pipe 2 13 and enter the deep main underground pipe 4, preventing the salt from migrating upward through the deep soil and reducing the "subsoil-topsoil" cycle of salt, thereby stabilizing the soil desalination rate in the long term. The salt and water in the shallow soil are also filtered and then enter the shallow main pipe 2 through the shallow branch pipe 1 3 and the shallow branch pipe 2 12, thereby quickly removing the water and salt in the shallow soil, blocking the topsoil salt return caused by the rise of capillary water, and achieving the purpose of reducing the salinity of the cultivated layer and protecting the crop root environment. The water accumulated in the shallow main pipe 2 and the deep main pipe 4 eventually flows into the water collection well 1. The water in the water collection well 1 is discharged to the external water body by the drainage pump 8, thereby lowering the groundwater level and removing salt from the soil, thus achieving balanced drainage of the device. Because the device operates underground for a long time, impurities such as salt scale, calcium deposits, clay, and biofilm easily accumulate in the pipes after long-term use, resulting in reduced device efficiency. By equipping the device with a cleaning mechanism 14, the device can perform self-cleaning after irrigation or rainfall. Soil seepage water penetrates the filter layer 10 and enters the pipe. The water flow is accelerated by the conical guide shroud 1406 and impacts the turbine blades 1402. The rotation of the turbine blades 1402 drives the hollow tube 1401 to rotate, thereby driving the soft bristles 1404 and hard bristles 1405 to rotate together, thus cleaning the pipe wall and effectively ensuring the operating efficiency of the device.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drainage and salt removal underground pipe laying structure for saline-alkali land, comprising a water collection well (1), characterized in that: A shallow main underground pipe (2) is fixedly connected to the top left side of the water collection well (1), a deep main underground pipe (4) is fixedly connected to the bottom left side of the water collection well (1), a shallow branch underground pipe (3) is fixedly connected to the front side of the shallow main underground pipe (2), a shallow branch underground pipe (12) is fixedly connected to the rear side of the shallow main underground pipe (2), a deep branch underground pipe (13) is fixedly connected to the rear side of the deep main underground pipe (4), a deep branch underground pipe (5) is fixedly connected to the front side of the deep main underground pipe (4), and a cleaning mechanism (14) is provided inside the deep branch underground pipe (5).

2. The underground drainage and salt removal pipe laying structure for saline-alkali land according to claim 1, characterized in that: The cleaning mechanism (14) includes a conical guide hood (1406), the front side of which is rotatably connected to a deep branch pipe (5), and a hollow tube (1401) is fixedly connected to the rear side of the conical guide hood (1406). A connecting piece (1403) is fixedly connected to the surface of the hollow tube (1401), and a hard brush bristle (1405) is fixedly connected to the surface of the connecting piece (1403).

3. The underground drainage and salt removal pipe laying structure for saline-alkali land according to claim 1, characterized in that: The top of the water collection well (1) is equipped with a well cover (9), and the bottom of the shallow branch underground pipe one (3), the deep branch underground pipe one (5), the shallow branch underground pipe two (12) and the deep branch underground pipe two (13) are all equipped with soil salinity sensors (6).

4. The underground drainage and salt removal pipe laying structure for saline-alkali land according to claim 3, characterized in that: A drainage pump (8) is provided on the top middle side of the manhole cover (9), and a drainage pipe (11) is fixedly connected to the surface of the drainage pump (8). A water level sensor (7) is provided on the top front side of the manhole cover (9).

5. The structure for laying underground drainage and salt removal pipes in saline-alkali land according to claim 1, characterized in that: The surface of each of the shallow branch pipe 1 (3), deep branch pipe 1 (5), shallow branch pipe 2 (12) and deep branch pipe 2 (13) is fixedly connected with a filter layer (10).

6. The underground drainage and salt removal pipe laying structure for saline-alkali land according to claim 2, characterized in that: Turbine blades (1402) are fixedly connected to the surface of the hollow tube (1401), and the front surface of the turbine blades (1402) is in contact with the rear surface of the conical shroud (1406).

7. The structure for laying underground drainage and salt removal pipes in saline-alkali land according to claim 2, characterized in that: The surface of the hard bristles (1405) is fixedly connected to soft bristles (1404), and the surface of the hard bristles (1405) is in contact with the inner wall of the deep branch pipe (5).

8. The underground drainage and salt removal pipe laying structure for saline-alkali land according to claim 1, characterized in that: The surface of each of the shallow branch pipe 1 (3), deep branch pipe 1 (5), shallow branch pipe 2 (12) and deep branch pipe 2 (13) is provided with water inlet holes, which are used to collect external soil water.

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