A salt removal device for saline-alkali land
By using a ring-shaped fixing frame, a net support frame, a non-woven fabric layer, and connecting components in the salt drainage device for saline-alkali land, the problem of the small coverage area of a single PVC seepage pipe was solved, enabling large-scale salt water collection and soil salinity management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU RES INST OF AGRI ENG TECH
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-03
AI Technical Summary
In existing technologies, salt drainage devices for saline-alkali land using a single PVC seepage pipe can only cover a limited area around the pipe and cannot achieve large-scale salt water collection.
The design incorporates a combination of a ring-shaped fixing frame, a mesh support frame, a non-woven fabric layer, connecting components, and fastening components to enhance the support capacity and sealing performance of the drainage pipe. Furthermore, the angle of the salt drainage pipe can be adjusted by using an adjusting sleeve and a corrugated pipe structure to adapt to the soil salinity distribution in different areas.
It expanded the salt drainage range, improved the efficiency of brine collection, prevented impurities from clogging and leaking, and enabled large-scale brine collection and effective soil salinity management.
Smart Images
Figure CN224439636U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of land management technology, specifically a salt removal device for saline-alkali land. Background Technology
[0002] Saline-alkali land, a common type of low-yield soil, has always been an important issue in agricultural production and ecological restoration. Salt drainage is the core of saline-alkali land management, and the current mainstream salt drainage method is based on the coordinated system of "salt drainage pipes and salt drainage ditches".
[0003] In the prior art, such as the Chinese patent disclosure CN218570808U, a saline-alkali land desalination device includes a PVC seepage pipe for burying in saline-alkali land. The outer surface of the PVC seepage pipe has multiple seepage holes evenly distributed. One end of the PVC seepage pipe is fixedly connected to a connector. A non-woven fabric tube is fitted onto the PVC seepage pipe, and multiple support rings are fitted onto the non-woven fabric tube. The two ends of the support rings are fixedly connected by bolts. A horizontally arranged support plate is fixedly connected to the outer surface of the support rings. A vertically arranged circular hole is opened on the upper surface of the support plate, and a stud is inserted into the circular hole. A prefabricated block for burying in saline-alkali land is fixedly connected to the lower end of the stud. A first nut and a second nut are threaded onto the stud. The first nut is located on the upper side of the support plate, and the second nut is located on the lower side of the support plate. This utility model has the following beneficial effects: preventing the drainage channel formed by multiple PVC seepage pipes from sinking downwards during soil settlement.
[0004] Although the above technical solution has the above technical advantages, its disadvantage is that the above solution only uses a single PVC seepage pipe as the main body for salt discharge. All support and filtration structures are designed around this single pipe. Due to the structural limitations of the single pipe, its salt discharge range can only cover a limited area around the pipe, and it cannot achieve large-scale salt water collection. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a salt drainage device for saline-alkali land, which solves the problem that a single salt drainage pipe can only cover a limited area around the pipe, resulting in a small salt drainage range.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a saline-alkali land desalination device, including a drainage pipe, and further comprising: an annular fixing frame fixedly connected to the outer side of the drainage pipe, a mesh support frame fixedly connected to the outer side of the annular fixing frame, a non-woven fabric layer provided on the outer side of the mesh support frame, connecting components fixedly connected to both sides of the drainage pipe, a fastening component movably installed on the side of the connecting component away from the drainage pipe, and a desalination pipe movably installed on the inner side of the fastening component. The annular fixing frame provides basic fixed support for the overall structure, and the mesh support frame on its outer side further enhances the protection and support capacity of the drainage pipe, effectively resisting soil pressure and preventing deformation of the drainage pipe;
[0007] The connecting assembly includes a flow guide sleeve, an adjusting sleeve is slidably connected to the inner side of the flow guide sleeve, and a corrugated pipe is fixedly connected to the outer side of the adjusting sleeve. The portion of the adjusting sleeve located inside the flow guide sleeve is spherical. This structure allows the adjusting sleeve to rotate flexibly within the flow guide sleeve, thereby driving the salt discharge pipe to adjust its angle to adapt to the soil salinity distribution in different areas.
[0008] Preferably, the mesh support frame is located outside the drainage pipe, and the inner side of the non-woven fabric layer is fixedly connected to the side wall of the annular fixing frame. The non-woven fabric layer outside the mesh support frame can intercept particulate impurities in the soil, preventing impurities from entering the device and causing blockage, while allowing salt water to pass through and permeate towards the drainage pipe.
[0009] Preferably, the outer side of the flow guide sleeve is fixedly connected to the inner wall of the drain pipe, and the end of the corrugated pipe away from the adjusting sleeve is fixedly connected to the outer side of the flow guide sleeve. The corrugated pipe can deform with the adjusting sleeve when it rotates, while ensuring the sealing of the connection and preventing salt water from leaking at the connection.
[0010] Preferably, the fastening assembly includes a main retaining ring, and a secondary retaining ring is rotatably connected to the bottom of the main retaining ring. The flange rings of the salt drain pipe and the end face of the adjusting sleeve are placed between the main retaining ring and the secondary retaining ring. The secondary retaining ring is rotated to close with the main retaining ring, and a rubber sealing ring is fitted at its interface to ensure the connection is sealed.
[0011] Preferably, the bottom of the main retaining ring is rotatably connected to a threaded sleeve, the top of the secondary retaining ring is rotatably connected to a rotating sleeve, the inner side of the rotating sleeve is rotatably connected to a locking bolt, the outer side of the locking bolt is threadedly connected to the inner side of the threaded sleeve, and by rotating the locking bolt on the inner side of the rotating sleeve, the locking bolt is screwed into the threaded sleeve at the bottom of the main retaining ring, and the main retaining ring and the secondary retaining ring are firmly fixed by the tightening force of the threaded connection.
[0012] The beneficial effects of this utility model are as follows:
[0013] (i) The device provides basic fixed support for the overall structure through the ring-shaped fixing frame on the outside of the drainage pipe. The outer mesh support frame further enhances the protection and support of the drainage pipe, effectively resists soil pressure, and prevents the drainage pipe from deforming. The non-woven fabric layer on the outside of the mesh support frame can intercept particulate impurities in the soil, prevent impurities from entering the device and causing blockage, while allowing salt water to pass through and permeate towards the drainage pipe.
[0014] (ii) The device is equipped with connecting components. The guide sleeve provides a channel for the flow of brine. The part of the adjusting sleeve located inside the guide sleeve is spherical. This structure allows the adjusting sleeve to rotate flexibly inside the guide sleeve, thereby driving the salt discharge pipe to adjust its angle to adapt to the soil salinity distribution in different areas, expanding the coverage of salt discharge and improving the brine collection efficiency. The corrugated pipe can deform with the adjusting sleeve when it rotates, while ensuring the sealing of the connection parts and preventing brine leakage at the connection. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the salt discharge pipe of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the connecting component of this utility model;
[0019] Figure 5 This is a structural schematic diagram of the fastening component of this utility model.
[0020] In the diagram: 1. Drainage pipe; 2. Circular fixing frame; 3. Netting support frame; 4. Non-woven fabric layer; 5. Connecting component; 6. Fastening component; 7. Salt discharge pipe; 51. Guide sleeve; 52. Adjusting sleeve; 53. Corrugated pipe; 61. Main retaining ring; 62. Secondary retaining ring; 63. Threaded sleeve; 64. Rotating sleeve; 65. Locking bolt. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example: Please refer to Figure 1-5This utility model provides a technical solution: a salt drainage device for saline-alkali land, including a drainage pipe 1, and further including: a ring-shaped fixing frame 2 fixedly connected to the outside of the drainage pipe 1, a net support frame 3 fixedly connected to the outside of the ring-shaped fixing frame 2, a non-woven fabric layer 4 provided on the outside of the net support frame 3, connecting components 5 fixedly connected to both sides of the drainage pipe 1, a fastening component 6 movably installed on the side of the connecting component 5 away from the drainage pipe 1, and a salt drainage pipe 7 movably installed on the inside of the fastening component 6. First, a main salt drainage pipe trench is excavated, and a 10-15cm thick sand and gravel cushion layer is laid at the bottom of the trench to buffer and drain the water; after the salt drainage device is placed on the cushion layer, sand and gravel are filled on both sides to 10cm above the top of the pipe, and then the original soil is covered and compacted. The drainage pipe 1 is connected to the salt drainage ditch, and finally all the salt water collected in the drainage pipe 1 will be discharged into the salt drainage ditch through the drainage pipe 1, completing the salt drainage operation of the saline-alkali land. After the device is installed in the saline-alkali soil, the salt water in the soil will gradually seep towards the device. The annular fixing frame 2 on the outside of the drainage pipe 1 provides basic fixed support for the overall structure, and the mesh support frame 3 on its outside further enhances the protection and support of the drainage pipe 1, effectively resisting soil pressure and preventing deformation of the drainage pipe 1. The non-woven fabric layer 4 on the outside of the mesh support frame 3 can intercept particulate impurities in the soil, preventing impurities from entering the device and causing blockage, while allowing salt water to pass through and permeate towards the drainage pipe 1;
[0023] The connecting component 5 includes a flow guide sleeve 51, an adjusting sleeve 52 is slidably connected to the inner side of the flow guide sleeve 51, a corrugated pipe 53 is fixedly connected to the outer side of the adjusting sleeve 52, a mesh support frame 3 is located outside the drainage pipe 1, the inner side of the non-woven fabric layer 4 is fixedly connected to the side wall of the annular fixing frame 2, the outer side of the flow guide sleeve 51 is fixedly connected to the inner wall of the drainage pipe 1, and the end of the corrugated pipe 53 away from the adjusting sleeve 52 is fixedly connected to the outer side of the flow guide sleeve 51. The salt discharge pipe 7 is responsible for collecting salt water in the surrounding soil, and the collected salt water will flow into the drainage pipe 1 through the connecting component 5. The guide sleeve 51 provides a channel for the flow of brine. The part of the adjusting sleeve 52 located inside the guide sleeve 51 is spherical. This structure allows the adjusting sleeve 52 to rotate flexibly inside the guide sleeve 51, thereby driving the salt discharge pipe 7 to adjust its angle to adapt to the soil salinity distribution in different areas, expanding the coverage of salt discharge and improving the brine collection efficiency. The corrugated pipe 53 can deform with the adjusting sleeve 52 when it rotates, while ensuring the sealing of the connection parts and preventing brine leakage at the connection.
[0024] The fastening assembly 6 includes a main retaining ring 61, a secondary retaining ring 62 rotatably connected to the bottom of the main retaining ring 61, a threaded sleeve 63 rotatably connected to the bottom of the main retaining ring 61, a rotating sleeve 64 rotatably connected to the top of the secondary retaining ring 62, a locking bolt 65 rotatably connected to the inner side of the rotating sleeve 64, and the outer side of the locking bolt 65 being threadedly connected to the inner side of the threaded sleeve 63. The fastening assembly 6 is used to stably install the salt discharge pipe 7 on the connecting assembly 5. During installation, place the flange rings on the end faces of the salt drain pipe 7 and the adjusting sleeve 52 simultaneously between the main retaining ring 61 and the auxiliary retaining ring 62. Rotate the auxiliary retaining ring 62 to close it with the main retaining ring 61. A rubber sealing ring is fitted at the interface to ensure a tight connection. Then, rotate the locking bolt 65 inside the rotating sleeve 64 to screw the locking bolt 65 into the threaded sleeve 63 at the bottom of the main retaining ring 61. The tightening force of the threaded connection firmly fixes the main retaining ring 61 and the auxiliary retaining ring 62, thereby securely clamping the salt drain pipe 7 and preventing it from loosening due to water flow impact or soil disturbance during operation.
[0025] Working principle: When in use, first excavate the main salt drainage pipe trench, and lay a 10-15cm thick sand and gravel cushion layer at the bottom of the trench to buffer and drain the water. After the salt drainage device is placed on the cushion layer, fill the sides with sand and gravel to 10cm above the top of the pipe, and then cover it with the original soil and compact it. Drainage pipe 1 is connected to the salt drainage ditch. Finally, all the salt water collected in drainage pipe 1 will be discharged into the salt drainage ditch through drainage pipe 1, thus completing the salt drainage operation of the saline-alkali land.
[0026] After the device is installed in saline-alkali soil, the brine in the soil will gradually seep towards the device. The annular fixing frame 2 on the outside of the drainage pipe 1 provides basic fixed support for the overall structure, and the mesh support frame 3 on its outside further enhances the protection and support of the drainage pipe 1, effectively resisting soil pressure and preventing deformation of the drainage pipe 1. The non-woven fabric layer 4 on the outside of the mesh support frame 3 can intercept particulate impurities in the soil, preventing impurities from entering the device and causing blockage, while allowing brine to pass through and seep towards the drainage pipe 1.
[0027] The salt drainage pipe 7 is responsible for collecting brine from the surrounding soil. The collected brine flows into the drainage pipe 1 through the connecting component 5. The guide sleeve 51 provides a channel for the flow of brine. The part of the adjusting sleeve 52 located inside the guide sleeve 51 is spherical. This structure allows the adjusting sleeve 52 to rotate flexibly within the guide sleeve 51, thereby driving the salt drainage pipe 7 to adjust its angle to adapt to the soil salinity distribution in different areas, expanding the coverage of salt drainage and improving the brine collection efficiency. The corrugated pipe 53 can deform with the adjusting sleeve 52 when it rotates, while ensuring the sealing of the connection parts and preventing brine leakage at the connection.
[0028] The fastening assembly 6 is used to stably install the salt discharge pipe 7 onto the connecting assembly 5. During installation, the flange rings on the end faces of the salt discharge pipe 7 and the adjusting sleeve 52 are placed simultaneously between the main retaining ring 61 and the auxiliary retaining ring 62. The auxiliary retaining ring 62 is rotated to close with the main retaining ring 61. A rubber sealing ring is fitted at the interface to ensure a tight connection. Then, the locking bolt 65 inside the rotating sleeve 64 is rotated so that the locking bolt 65 is screwed into the threaded sleeve 63 at the bottom of the main retaining ring 61. The tightening force of the threaded connection firmly fixes the main retaining ring 61 and the auxiliary retaining ring 62, thereby firmly clamping the salt discharge pipe 7 and preventing it from loosening due to water flow impact or soil disturbance during operation.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0030] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A saline soil salt draining device comprising a drain pipe (1), characterized in that, Also includes: A ring-shaped fixing frame (2) is fixedly connected to the outside of the drain pipe (1), and a mesh support frame (3) is fixedly connected to the outside of the ring-shaped fixing frame (2). A non-woven fabric layer (4) is provided on the outside of the mesh support frame (3). A connecting component (5) is fixedly connected to both sides of the drain pipe (1). A fastening component (6) is movably installed on the side of the connecting component (5) away from the drain pipe (1). A salt discharge pipe (7) is movably installed on the inside of the fastening component (6). The connecting assembly (5) includes a flow guide sleeve (51), an adjusting sleeve (52) is slidably connected to the inner side of the flow guide sleeve (51), and a bellows (53) is fixedly connected to the outer side of the adjusting sleeve (52).
2. The saline soil salt draining device according to claim 1, characterized in that: The mesh support frame (3) is located outside the drain pipe (1), and the inner side of the non-woven fabric layer (4) is fixedly connected to the side wall of the annular fixing frame (2).
3. The saline soil salt draining device according to claim 1, characterized in that: The outer side of the guide sleeve (51) is fixedly connected to the inner wall of the drain pipe (1), and the end of the corrugated pipe (53) away from the adjusting sleeve (52) is fixedly connected to the outer side of the guide sleeve (51).
4. The saline soil salt draining device according to claim 1, characterized in that: The fastening assembly (6) includes a main retaining ring (61), and a secondary retaining ring (62) is rotatably connected to the bottom of the main retaining ring (61).
5. The saline soil salt draining device according to claim 4, characterized in that: The bottom of the main retaining ring (61) is rotatably connected to a threaded sleeve (63), and the top of the secondary retaining ring (62) is rotatably connected to a rotating sleeve (64).
6. The saline soil salt draining device according to claim 5, characterized in that: The inner side of the rotating sleeve (64) is rotatably connected to a locking bolt (65), and the outer side of the locking bolt (65) is threadedly connected to the inner side of the threaded sleeve (63).