Seaside saline-alkali soil improvement and alkali removal device

Abstract

The invention discloses a seaside saline alkali soil improvement and alkali discharge device which comprises an alkali discharge box, a water discharge box and a lateral fixing assembly, and the alkali discharge box is provided with a flushing water device; the water discharge tank is connected below the alkali discharge tank in a sealing manner and is communicated with an alkali discharge pipe; the lateral fixing assembly is mounted in the alkali discharging box; the lateral fixing assembly comprises a mounting box, a worm, a transmission wheel, a transmission belt, a hand wheel, a two-way threaded rod, a worm gear, a moving plate and a first insertion rod. The two mounting boxes are respectively fixed on two opposite side walls of the alkali discharging box. Due to the arrangement of the lateral fixing assembly, a worm is rotated by rotating a hand wheel, a worm gear and a two-way threaded rod are driven by the worm to rotate, moving plates on the two sides further drive a first inserting rod to move outwards, the first inserting rod is inserted into the inner wall of an alkali discharging tank, and therefore the alkali discharging box is fixed, and the problem that the alkali discharging box topples over is solved; the transverse stability of the alkali discharge box is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of saline-alkali land improvement, and particularly relates to a device for improving saline-alkali soil and discharging alkali on the seashore. Background Art

[0002] Saline-alkali land refers to soil containing a relatively high concentration of soluble salts, especially sodium salts, whose presence will seriously affect the normal growth of crops and even cause plants to be unable to survive. The formation of saline-alkali land is mostly related to strong regional water evaporation, relatively high groundwater levels, and the accumulation of carbonates and chlorides in the soil. In the coastal areas of China, especially in the near-shore tidal flat areas, due to the long-term influence of natural processes such as seawater infiltration, wind transportation, and salt deposition, the problem of salinization is particularly prominent. Therefore, how to carry out effective land improvement and implement ecological greening in these areas has become an important research direction in the fields of soil remediation and urban greening.

[0003] Currently, relatively common methods for improving saline-alkali land include methods such as salt drainage, alkali pressing, soil replacement, and planting salt-tolerant plants. Among them, alkali discharge is a basic measure to effectively reduce soil salinity and improve the physical and chemical properties of the soil, and is widely used in the greening projects of coastal saline-alkali land. Most coastal cities use open ditches in combination with alkali discharge troughs for alkali discharge operations. Usually, alkali discharge troughs are excavated underground for placing alkali discharge boxes. However, such alkali discharge systems still have many deficiencies in actual use, affecting their alkali discharge efficiency and convenience of use. First, since alkali discharge troughs are usually buried in natural soil, and the soil structure of coastal saline-alkali land is generally loose, with problems such as coarse particles and poor cohesion. To control costs, alkali discharge troughs mostly use simple horizontal support plates for fixation instead of a complete frame structure. Coupled with a large void ratio and low compactness in the soil, it is extremely easy for alkali discharge troughs to collapse during long-term use, thereby causing the alkali discharge box to skew, the bottom to become unstable, and even causing equipment damage. Second, when maintaining or replacing the alkali discharge box, the existing structures generally lack an effective quick disassembly and assembly mechanism. Traditional methods often require overall excavation or forced dumping of the alkali discharge box to remove the deposited soil and alkali discharge medium inside the box, which not only increases the complexity of maintenance operations, but also increases the manual labor intensity and the risk of device damage.

[0004] In summary, although certain progress has been made in the existing coastal saline-alkali land greening and alkali discharge technologies, there are still many deficiencies in aspects such as the stability of the alkali discharge box, installation convenience, and device maintainability. There is an urgent need to propose a new type of alkali discharge device with optimized structure and integrated functions to further improve the efficiency and reliability of the coastal saline-alkali land greening project. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for improving saline-alkali soil and discharging alkali on the seashore to solve the problems of the stability of the alkali discharge box and inconvenient installation.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A seaside saline-alkali soil improvement and alkali drainage device, which includes: an alkali drainage box, a drainage box and a lateral fixing component. The alkali drainage box is provided with a flushing water device; the drainage box is hermetically connected below the alkali drainage box, and the drainage box is communicated with an alkali drainage pipe; the lateral fixing component is installed in the alkali drainage box; the lateral fixing component includes an installation box, a worm, a transmission wheel, a transmission belt, a handwheel, a bidirectional threaded rod, a worm gear, a moving plate and a first insertion rod; the two installation boxes are respectively fixed on two opposite side walls of the alkali drainage box, and the worm vertically passes through the upper cover plate of the installation box; a transmission wheel and a handwheel are installed at the upper end of the worm, and a transmission belt is provided between two corresponding transmission wheels; a worm gear is installed in the middle of the bidirectional threaded rod, and the worm gear is meshed with the worm; the thread rotation directions of the bidirectional threaded rod on both sides of the worm gear are opposite; the moving plate is provided with an internal thread adapted to the bidirectional threaded rod, and the two moving plates are respectively installed on both sides of the bidirectional threaded rod. When the bidirectional threaded rod rotates, the two moving plates move synchronously towards or away from each other; the first insertion rod is vertically fixed on the moving plate.

[0007] For the seaside saline-alkali soil improvement and alkali drainage device as described above in the present invention, further, the installation box is of a cuboid structure; the handwheel and the transmission wheel are both located outside the installation box, and the handwheel is located above the transmission wheel.

[0008] For the seaside saline-alkali soil improvement and alkali drainage device as described above in the present invention, further, the flushing water device includes a support frame, a water pump, a water inlet pipe, a water outlet pipe and a spray head; the support frame is installed on the top of the alkali drainage box; the water pump is fixed on the support frame; the water inlet pipe is connected to the liquid inlet of the water pump, one end of the water outlet pipe is connected to the liquid outlet of the water pump, the spray head is arranged inside the alkali drainage box, and the water outlet pipe is communicated with the spray head.

[0009] For the seaside saline-alkali soil improvement and alkali drainage device as described above in the present invention, further, the bottom end of the worm is coaxially connected with a lead screw, and the lead screw passes through the bottom plate of the alkali drainage box; a linkage component is further included, and the linkage component includes a lifting plate, a support leg, an L-shaped plate, a first connecting piece, a second connecting piece, a support plate and a second insertion rod; the lifting plate is provided with an internal thread adapted to the lead screw, and the lifting plate is installed on the lead screw; the support legs are fixedly arranged at intervals on the bottom side of the lifting plate; the bottom plate of the L-shaped plate is fixedly connected with the lifting plate; one end of the first connecting piece is hinged to the top of the side plate of the L-shaped plate, the other end of the first connecting piece is hinged to the support plate, one end of the second connecting piece is hinged to the outer wall of the alkali drainage box, and the other end of the second connecting piece is hinged to the support plate; the second insertion rod is fixedly connected to the outside of the support plate.

[0010] The device for improving and draining alkali from seaside saline-alkali soil of the present invention is as described above, further, the ends of the first insertion rod and the second insertion rod are pointed structures; at least three of the first insertion rods are fixed on each movable plate, and at least two of the second insertion rods are fixed on each support plate.

[0011] The alkali drainage device for improving and draining saline-alkali soil at the seaside of the present invention as described above, further, the alkali drainage box and the drainage box are connected by a disassembly assembly, and the disassembly assembly includes an L-shaped card plate, an L-shaped side plate, a sliding rod, a spring and an insert block; the horizontal part of the L-shaped card plate is fixedly connected to the outer wall of the drainage box, and the vertical part of the L-shaped card plate is provided with a limiting groove; the horizontal part of the L-shaped side plate is provided with a slot for inserting the L-shaped card plate, and the vertical part of the L-shaped side plate is provided with a through hole, the sliding rod is installed in the through hole, one end of the sliding rod is fixed with an insert block, and the other end of the sliding rod is fixed with a baffle, and a spring is provided on the sliding rod, and the spring is located between the insert block and the L-shaped side plate.

[0012] The alkali drainage device for improving seaside saline-alkali soil of the present invention is further characterized in that two opposite horizontal side panels are fixed to the outer wall of the alkali drainage box, and the distance between the outer edges of the two horizontal side panels is greater than the width of the top of the alkali drainage tank.

[0013] The beneficial effects of the present invention are: 1. Due to the provision of a fixed component, the worm is rotated by turning the hand wheel, and the worm drives the worm wheel and the bidirectional threaded rod to rotate, and the movable plates on both sides further drive the first plug rod to move outward, and the first plug rod is inserted into the inner wall of the alkali drainage tank, thereby fixing the alkali drainage box, avoiding the problem of the alkali drainage box tipping over, and improving the lateral stability of the alkali drainage box.

[0014] 2. Due to the provision of a linkage assembly, the hand wheel is turned to move the first insertion rod outward while the lifting plate moves downward on the screw rod, thereby driving the L-shaped plate to move downward, and the support plate is pushed outward by the first connecting member and the second connecting member, and the inner wall of the alkali drainage tank is fitted and fixed by the support plate. At the same time, the support effect of the alkali drainage box is effectively enhanced by the support legs and the first insertion rod to prevent the alkali drainage box from tilting.

[0015] 3. Due to the provision of a disassembly component, the slide bar is moved outward to disengage the insert from the limit slot, and then the L-shaped card plate is disengaged from the slot to separate the alkali drainage box from the drainage box. This effectively reduces the difficulty of removing the soil inside the alkali drainage box after it is removed. There is no need to lay the alkali drainage box down or manually remove the soil inside the alkali drainage box, which reduces the workload of the operator and improves the convenience of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Advantages of the above and / or other aspects of the present invention will become clearer and easier to understand through the following detailed description in conjunction with the accompanying drawings, which are merely illustrative and do not limit the present invention, where: Figure 1 Schematic diagram of a seaside saline-alkali soil improvement and alkali-drainage device according to an embodiment of the present invention; Figure 2 First sectional view of a seaside saline-alkali soil improvement and alkali-drainage device according to an embodiment; Figure 3 Second sectional view of a seaside saline-alkali soil improvement and alkali-drainage device according to an embodiment; Figure 4 Schematic diagram of a seaside saline-alkali soil improvement and alkali-drainage device according to an embodiment of the present invention; Figure 5 Schematic diagram of a lateral fixing assembly according to an embodiment of the present invention; Figure 6 Schematic diagram of a disassembly assembly according to an embodiment of the present invention; Figure 7 Exploded view of the structure of a disassembly assembly according to an embodiment of the present invention.

[0017] In the drawings, the list of components represented by each reference numeral is as follows: 1. Alkali-drainage box; 101. Horizontal side plate; 2. Lateral fixing assembly; 21. Installation box; 22. Worm; 23. Driving wheel; 24. Transmission belt; 25. Handwheel; 26. Bidirectional threaded rod; 27. Worm gear; 28. Moving plate; 29. First insertion rod; 210. Lead screw; 3. Linkage assembly; 31. Lifting plate; 32. Support leg; 33. L-shaped plate; 34. First connecting piece; 35. Support plate; 36. Second connecting piece; 37. Second insertion rod; 4. Plugging and sealing plate; 5. Drainage box; 6. Alkali-drainage pipe; 7. Disassembly assembly; 71. L-shaped clamping plate; 72. Limiting groove; 73. L-shaped side plate; 74. Slot; 75. Slide bar; 76. Spring; 77. Insert block; 8. Support frame; 9. Water pump; 10. Water inlet pipe; 11. Water outlet pipe; 12. Sprinkler head. Detailed implementation manners

[0018] Hereinafter, embodiments of the seaside saline-alkali soil improvement and alkali-drainage device of the present invention will be described with reference to the accompanying drawings.

[0019] The embodiments described herein are specific specific implementation manners of the present invention for explaining the concept of the present invention, and are all explanatory and exemplary, and should not be construed as limiting the implementation manners of the present invention and the scope of the present invention. Except for the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the content disclosed in the claims and the specification of the present application, and these technical solutions include technical solutions that make any obvious substitutions and modifications to the embodiments described herein.

[0020] The drawings in this specification are schematic diagrams to assist in explaining the concept of the present invention, schematically showing the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of the components in the embodiments of the present invention, the drawings are not drawn in the same proportion. The same reference numerals are used to represent the same parts.

[0021] The following Figures 1 to 7 describes an alkali-removing device for improving coastal saline-alkali soil according to an embodiment of the present invention, which includes: An alkali-removing tank 1, and the alkali-removing tank 1 is provided with a flushing water device; in a preferred embodiment of the alkali-removing device for improving coastal saline-alkali soil, as Figure 1 , Figure 2 and Figure 3 shown, the flushing water device includes a support frame 8, a water pump 9, a water inlet pipe 10, a water outlet pipe 11 and a spray head 12; the support frame 8 is installed on the top of the alkali-removing tank 1; the water pump 9 is fixed on the support frame 8; the water inlet pipe 10 is connected to the liquid inlet of the water pump 9, one end of the water outlet pipe 11 is connected to the liquid outlet of the water pump 9, the spray head 12 is arranged inside the alkali-removing tank 1, and the water outlet pipe 11 communicates with the spray head 12. The spray head 12 has a porous water outlet structure for directionally spraying and flushing the soil in the alkali-removing tank, so as to clean the deposited salts. The water pump 9 can be a small submersible pump or a DC-powered water pump. Those skilled in the art connect the water inlet pipe to a water source, and the above water source is fresh water, such as collected rainwater or other fresh water.

[0022] A drainage tank 5, the drainage tank 5 is hermetically connected below the alkali-removing tank 1, and the drainage tank 5 communicates with a drainage pipe 6; in a preferred embodiment, a sand layer and a gravel layer are arranged inside the drainage tank 5. Combining Figure 2 and Figure 3 shown, there are openings on the bottom plate of the alkali-removing tank, and a vertically downward plugging sealing plate 4 is provided at the opening position of the alkali-removing tank, such as welding the plugging sealing plate at the opening position of the bottom plate of the alkali-removing tank; the plugging sealing plate is constructed into a structure consistent with the contour of the internal cavity of the drainage tank, which is convenient for inserting into the drainage tank to realize the sealed connection between the drainage tank and the alkali-removing tank. The outer periphery of the plugging sealing plate 4 can be coated with an elastic sealing ring to enhance the sealing performance and prevent the flushing water and the saline waste liquid from leaking into the external soil of the alkali-removing tank, causing secondary pollution. The water from the outside is pumped by the water pump 9 into the water outlet pipe 11 through the water inlet pipe 10 and then sprayed onto the soil inside the alkali-removing tank 1 from the spray head 12. After the water flushes the salts and alkalis in the soil, it flows downward under the action of gravity, and then passes through the filtration of the sand layer and the granular gravel layer inside the drainage tank 5, and then enters the drainage pipe 6 and is discharged. Through the separate arrangement of the alkali-removing tank 1 and the drainage pipe 6, the difficulty of disassembling and separating the two in the subsequent operation process is effectively reduced.

[0023] The lateral fixing assembly 2 is installed inside the alkali drainage tank 1; the lateral fixing assembly 2 includes an installation box 21, a worm 22, a transmission wheel 23, a transmission belt 24, a handwheel 25, a bidirectional threaded rod 26, a worm gear 27, a moving plate 28 and a first insertion rod 29; the two installation boxes 21 are respectively fixed on two opposite side walls of the alkali drainage tank 1 (for example Figure 2 in the case where the alkali drainage tank is a cuboid structure, the two side walls where the installation boxes are arranged are respectively the first side wall and the second side wall, and the two side walls into which the corresponding first insertion rods are inserted are respectively the third side wall and the fourth side wall), the worm 22 vertically passes through the upper cover plate of the installation box 21, and preferably the worm is installed at the opening of the upper cover plate through a sealing bearing; a transmission wheel 23 and a handwheel 25 are installed at the upper end of the worm 22, and a transmission belt 24 is arranged between the two corresponding transmission wheels 23; a worm gear 27 is installed in the middle of the bidirectional threaded rod 26, and the bidirectional threaded rod 26 is preferably installed on two opposite side plates of the installation box through a sealing bearing, and the worm gear 27 is meshed and connected with the worm 22; the thread rotation directions of the bidirectional threaded rod 26 on both sides of the worm gear 27 are opposite; the moving plate 28 is provided with internal threads adapted to the bidirectional threaded rod 26, and the two moving plates 28 are respectively installed on both sides of the bidirectional threaded rod 26, and when the bidirectional threaded rod 26 rotates, the two moving plates 28 move synchronously towards or away from each other; the first insertion rod 29 is vertically fixed on the moving plate 28. The lateral fixing assembly 2 can be used to connect the alkali drainage tank 1 with the soft soil, prevent the alkali drainage tank from shifting or tipping over in the alkali drainage groove, and improve the stability of the device under operating conditions; the worm-worm gear structure has self-locking property and can maintain a fixed state after bearing an external force, ensuring that the moving plate does not slip due to the external force. The two transmission wheels 23 are connected by the transmission belt 24. When the handwheel 25 at the top is rotated, the worm 22 will rotate synchronously, so that the worm gear 27 and the bidirectional threaded rod 26 rotate synchronously. Since the threads on both sides of the bidirectional threaded rod 26 are arranged in opposite directions, the moving plates 28 will move synchronously towards or away from each other, so that the moving plates 28 push the first insertion rods 29 into the inner wall of the alkali drainage groove or move the first insertion rods 29 out from the inner wall of the alkali drainage groove. In this way, the fixing and detachment effects of the alkali drainage tank 1 can be realized through the first insertion rods 29, avoiding the problem of the alkali drainage tank 1 tilting in the alkali drainage groove and enhancing the stability of the alkali drainage tank 1.

[0024] In a preferred embodiment of the alkali drainage device for improving coastal saline-alkali soil, the installation box 21 is a cuboid structure; both the handwheel 25 and the transmission wheel 23 are located outside the installation box 21, and the handwheel 25 is located above the transmission wheel 23. Setting the handwheel above the transmission wheel is convenient for construction workers to operate it from above. By operating the handwheel 25, the rotation of the worm 22 can be realized, and then the position adjustment of the moving plate 28 can be driven.

[0025] In a preferred embodiment of the alkali drainage device for improving coastal saline-alkali soil, such as Figure 4 and Figure 5As shown, a lead screw 210 is coaxially connected to the bottom end of the worm 22, and the lead screw 210 penetrates through the bottom plate of the alkali drainage tank 1; the alkali drainage device further includes a linkage assembly 3, and the linkage assembly 3 includes a lifting plate 31, a support leg 32, an L-shaped plate 33, a first connecting member 34, a second connecting member 36, a support plate 35, and a second insertion rod 37; the lifting plate 31 is provided with an internal thread for cooperating with the lead screw 210, and the lifting plate 31 is installed on the lead screw; the support legs 32 are fixedly spaced on the bottom side of the lifting plate 31; the bottom plate of the L-shaped plate 33 is fixedly connected to the lifting plate 31, and the side plate of the L-shaped plate is arranged outside the corresponding first side wall or the second side wall. Preferably, a guiding member with a guiding hole is arranged outside the first side wall or the second side wall of the alkali drainage tank, the guiding member is fixed outside the side wall, and the side plate of the L-shaped plate is inserted into the guiding hole; one end of the first connecting member 34 is hinged to the top of the side plate of the L-shaped plate 33, the other end of the first connecting member 34 is hinged to the support plate 35, one end of the second connecting member 36 is hinged to the outer wall of the alkali drainage tank 1, and the other end of the second connecting member 36 is hinged to the support plate 35; the second insertion rod 37 is fixedly connected to the outside of the support plate 35. When the lead screw 210 rotates, the lifting plate 31 can move up and down, driving the support legs 32 to contact or insert into the bottom soil to form the bottom support, improving the overall longitudinal stability of the alkali drainage tank; the support plate 35 and the insertion rod 37 form an auxiliary limiting structure to prevent the device from tilting under force. By rotating the handwheel 25, the worm 22 rotates and drives the lead screw 210 to rotate, further enabling the lifting plate 31 to move up and down outside the lead screw 210, thereby driving the support legs 32 to move up and down, and ensuring that the support legs 32 are stably supported and fixed to the bottom of the alkali drainage tank, thus solving the problem that the bottom support legs 32 of the alkali drainage tank 1 cannot be adjusted to contact the ground to ensure the bottom support effect after the alkali drainage tank 1 is placed inside the alkali drainage tank. By driving the support legs 32 to move downward through the lifting plate 31, the support and fixation effect of the support legs 32 on the alkali drainage tank 1 is ensured, and the adjustment can be achieved by the operator rotating the handwheel 25 on the ground surface, reducing the operation difficulty of the support legs 32; at the same time, during the downward movement of the lifting plate 31, the L-shaped plate 33 moves downward synchronously, the L-shaped plate 33 drives one end of the first connecting member 34 to move downward, and under the cooperation of the hinged connection between one end of the second connecting member 36 and the outer wall of the alkali drainage tank, the support plate 35 is pushed outward and extended until the support plate 35 is attached and fixed to the inner wall of the alkali drainage tank. Through the linkage effect, the four side walls and the bottom of the alkali drainage tank 1 can be supported and fixed, greatly enhancing the stability of the alkali drainage tank 1 in the alkali drainage tank.

[0026] In a preferred embodiment of the alkali drainage device for improving coastal saline-alkali soil, as Figure 4 and Figure 5 shown, the ends of the first insertion rod 29 and the second insertion rod 37 are tip structures; at least three first insertion rods 29 are fixedly arranged on each moving plate 28, and at least two second insertion rods 37 are fixedly arranged on each support plate 35. The effective insertion into the soil is realized through the insertion rods with tip structures.

[0027] In a preferred embodiment of the device for improving and removing alkali from seaside saline-alkali soil, as Figure 6 and Figure 7 shown, the alkali removal box 1 and the drainage box 5 are connected by a disassembly component 7. The disassembly component 7 includes an L-shaped clamping plate 71, an L-shaped side plate 73, a sliding rod 75, a spring 76 and a plug 77. The horizontal part of the L-shaped clamping plate 71 is fixedly connected to the outer wall of the drainage box 5, and a limiting groove 72 is provided in the vertical part of the L-shaped clamping plate 71. A slot 74 for inserting the L-shaped clamping plate 71 is provided in the horizontal part of the L-shaped side plate 73, and a through hole is provided in the vertical part of the L-shaped side plate 73. The sliding rod 75 is installed in the through hole. One end of the sliding rod 75 is fixed with a plug 77, and the other end of the sliding rod 75 is fixed with a baffle. A spring 76 is provided on the sliding rod 75 between the plug 77 and the L-shaped side plate 73. The above structure can realize the rapid disassembly and assembly of the alkali removal box and the drainage box, facilitate cleaning, maintenance or replacement of components, and effectively improve the maintenance efficiency and equipment durability. When the alkali removal from the soil inside the alkali removal box 1 is completed, the alkali removal box 1 is taken out of the alkali removal tank through the side plates exposed on the ground on both sides of the alkali removal box 1. Then, the baffle is pulled to drive the sliding rod 75 to drive the plug 77 to disengage from the inside of the limiting groove 72. Then, the alkali removal box 1 is moved upward until the limiting groove 72 disengages from the inside of the slot 74. As the alkali removal box 1 moves upward, the plugging and sealing plate 4 is disengaged from the drainage box 5, and the disassembly of the alkali removal box 1 and the alkali removal pipe 6 can be completed. The sealing performance at the connection between the alkali removal box 1 and the drainage box 5 is improved through the plugging and sealing plate 4, avoiding the situation that the saline-alkali water overflows from the gap and causes soil pollution around. At the same time, when the alkali removal box 1 moves upward, the soil will automatically drain out from the surrounding gaps under the action of gravity, greatly reducing the workload of the staff to take out the soil inside the alkali removal box 1.

[0028] In a preferred embodiment of the device for improving and removing alkali from seaside saline-alkali soil, as Figure 1 shown, two horizontally arranged side plates 101 opposite to each other are fixedly connected to the outer wall of the alkali removal box 1, and the distance between the outer edges of the two horizontally arranged side plates 101 is greater than the width of the top of the alkali removal tank. This structural design facilitates the stable placement of the alkali removal box in the preset alkali removal tank, realizes rapid positioning and installation, saves manual operation time, and improves construction efficiency.

[0029] The usage process of the device for improving and removing alkali from seaside saline-alkali soil of the present invention: Step 1, during use, the staff places the alkali removal box 1 in the alkali removal tank, and uses the horizontally arranged side plates on both sides of the alkali removal box 1 to place the alkali removal box 1 in the alkali removal tank, which facilitates subsequent removal. Then, the hand wheel 25 is rotated to drive the worm gear 22 to rotate. The worm gear 22 drives the bidirectional threaded rod 26 and the worm wheel 27 to rotate synchronously. When the worm gear 22 rotates, the worm gears 22 on both sides rotate synchronously through the cooperation of the transmission wheels 23 and the transmission belts 24, further enabling the moving plates 28 on both sides to move outward synchronously, and pushing the first insertion rod 29 into the inner wall of the alkali removal tank to fix the alkali removal box 1 in the alkali removal tank, avoiding the alkali removal box 1 from tipping or shifting in the alkali removal tank; Step 2: While the worm gear 22 rotates, it will drive the lead screw 210 to rotate synchronously, so that the lifting plate 31 moves downward under the cooperation of the limit of the L-shaped plate 33 until the support feet 32 contact the bottom surface of the alkali drainage tank, further enhancing the support effect on the alkali drainage box 1 through the support feet 32, ensuring the stability of the fixation of the alkali drainage box 1, and further ensuring that the alkali drainage pipe 6 will not be damaged due to the inclination or movement of the alkali drainage box 1 during the alkali drainage process; when the L-shaped plate 33 moves downward, it will drive one end of the first connecting piece 34 to move downward, and the support plate 35 moves outward under the cooperation of the second connecting piece 36 until the support plate 35 fits against the inner wall of the alkali drainage tank, using the support plate 35 to support the inner wall of the alkali drainage tank and improving the stability effect inside the alkali drainage tank. In this regard, a structural stability test was carried out. Purpose: To verify the fixation effect of the lateral fixation component and the linkage component on the alkali drainage box. Method: Install the device in a simulated saline-alkali land (soil bulk density 1.2 g / cm³, water content 15%); set a control group (without a fixation component) and an experimental group (with the fixation component enabled); apply a lateral force to simulate strong wind / water flow impact and measure whether it topples. Results: None of the 50 alkali drainage devices in the experimental group toppled, while 38 out of the 50 devices in the control group toppled completely or had an inclination angle greater than 30 degrees.

[0030] Step 3: The water pump 9 pumps the water inside the water inlet pipe 10 to the water outlet pipe 11 and then sprays it out from the nozzle 12. After the water washes the salts and alkalis in the soil inside the alkali drainage box 1, the saline-alkali liquid enters the alkali drainage pipe 6 after passing through the sand layer and small particle stone layer inside the alkali drainage box 1 to filter out impurities. When the alkali drainage of the soil inside the alkali drainage box 1 is completed, rotate the handwheel 25 to retract the first plug rod 29 into the alkali drainage box 1, and the support plate 35 disengages from the inside of the alkali drainage tank to achieve reset. Then the alkali drainage box 1 can be taken out of the alkali drainage tank. Then, move the sliding rod 75 outward through the pull plate, further separating the plug 77 from the inside of the limit groove 72, and then moving the alkali drainage box 1 upward to disassemble the alkali drainage box 1 and the drainage box 5, and the soil inside the alkali drainage box 1 will be discharged accordingly. In this way, while improving the soil extraction effect, the filter layer inside the drainage box 5 will not be discharged together, enhancing the practicality of the overall device.

[0031] The disclosed technical features are not limited to the combinations with other disclosed features. Those skilled in the art can also make other combinations among the technical features according to the purpose of the invention, subject to achieving the purpose of the present invention.

Claims

1. A coastal saline-alkali soil improvement and desalination device, characterized in that Including: An alkali drainage tank (1), a drainage tank (5) and a lateral fixing component (2). The alkali drainage tank (1) is provided with a flushing water device; the drainage tank (5) is hermetically connected below the alkali drainage tank (1), and the drainage tank (5) is communicated with an alkali drainage pipe (6); the lateral fixing component (2) is installed in the alkali drainage tank (1); the lateral fixing component (2) includes an installation box (21), a worm (22), a transmission wheel (23), a transmission belt (24), a hand wheel (25), a bidirectional threaded rod (26), a worm gear (27), a moving plate (28) and a first plug rod (29); the two installation boxes (21) are respectively fixed on two opposite side walls of the alkali drainage tank (1), and the worm (22) vertically penetrates through the upper cover plate of the installation box (21); a transmission wheel (23) and a hand wheel (25) are installed at the upper end of the worm (22), and a transmission belt (24) is arranged between two corresponding transmission wheels (23); a worm gear (27) is installed in the middle of the bidirectional threaded rod (26), and the worm gear (27) is meshed and connected with the worm (22); the thread rotation directions of the bidirectional threaded rod (26) on both sides of the worm gear (27) are opposite; the moving plate (28) is provided with internal threads adapted to the bidirectional threaded rod (26), and the two moving plates (28) are respectively installed on both sides of the bidirectional threaded rod (26), and when the bidirectional threaded rod (26) rotates, the two moving plates (28) move synchronously towards or away from each other; the first plug rod (29) is vertically fixed on the moving plate (28).

2. The seaside saline-alkali soil improvement and alkali drainage device according to claim 1, characterized in that, The installation box (21) is of a cuboid structure; the hand wheel (25) and the transmission wheel (23) are both located outside the installation box (21), and the hand wheel (25) is located above the transmission wheel (23).

3. The seaside saline-alkali soil improvement and alkali drainage device according to claim 1, characterized in that, The flushing water device includes a support frame (8), a water pump (9), a water inlet pipe (10), a water outlet pipe (11) and a spray head (12); the support frame (8) is installed on the top of the alkali drainage tank (1); the water pump (9) is fixed on the support frame (8); the water inlet pipe (10) is connected to the liquid inlet of the water pump (9), one end of the water outlet pipe (11) is connected to the liquid outlet of the water pump (9), the spray head (12) is arranged inside the alkali drainage tank (1), and the water outlet pipe (11) is communicated with the spray head (12).

4. The seaside saline-alkali soil improvement and alkali drainage device according to any one of claims 1 to 3, characterized in that, The bottom end of the worm (22) is coaxially connected with a lead screw (210), and the lead screw (210) penetrates through the bottom plate of the alkali drainage tank (1); further included is a linkage assembly (3), and the linkage assembly (3) includes a lifting plate (31), a support leg (32), an L-shaped plate (33), a first connecting member (34), a second connecting member (36), a support plate (35), and a second insertion rod (37); the lifting plate (31) is provided with an internal thread that cooperates with the lead screw (210), and the lifting plate (31) is installed on the lead screw; the support legs (32) are fixedly spaced on the bottom side of the lifting plate (31); the bottom plate of the L-shaped plate (33) is fixedly connected to the lifting plate (31); one end of the first connecting member (34) is hinged to the top of the side plate of the L-shaped plate (33), the other end of the first connecting member (34) is hinged to the support plate (35), one end of the second connecting member (36) is hinged to the outer wall of the alkali drainage tank (1), and the other end of the second connecting member (36) is hinged to the support plate (35); the second insertion rod (37) is fixedly connected to the outside of the support plate (35).

5. The seaside saline-alkali soil improvement and alkali drainage device according to claim 4, characterized in that, The ends of the first insertion rod (29) and the second insertion rod (37) are tip structures; at least three of the first insertion rods (29) are fixedly arranged on each moving plate (28), and at least two of the second insertion rods (37) are fixedly arranged on each support plate (35).

6. The seaside saline-alkali soil improvement and alkali drainage device according to claim 1, characterized in that, The alkali drainage tank (1) and the drainage tank (5) are connected through a disassembly assembly (7), and the disassembly assembly (7) includes an L-shaped clamping plate (71), an L-shaped side plate (73), a sliding rod (75), a spring (76), and an insertion block (77); the horizontal part of the L-shaped clamping plate (71) is fixedly connected to the outer wall of the drainage tank (5), and a limiting groove (72) is provided in the vertical part of the L-shaped clamping plate (71); a slot (74) for inserting the L-shaped clamping plate (71) is provided in the horizontal part of the L-shaped side plate (73), a through hole is provided in the vertical part of the L-shaped side plate (73), the sliding rod (75) is installed in the through hole, one end of the sliding rod (75) is fixed with an insertion block (77), a baffle is fixed to the other end of the sliding rod (75), and a spring (76) is arranged on the sliding rod (75), and the spring (76) is located between the insertion block (77) and the L-shaped side plate (73).

7. The seaside saline-alkali soil improvement and alkali drainage device according to claim 1, characterized in that Two horizontally arranged side plates (101) that are opposite in position are fixedly arranged on the outer wall of the alkali drainage tank (1), and the distance between the outer edges of the two horizontally arranged side plates (101) is greater than the width of the top of the alkali drainage groove.

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