Assembled multi-stage sand blocking device for soil and water conservation

Abstract

The application relates to the technical field of water and soil conservation, and discloses an assemblable multi-stage sand blocking device for water and soil conservation, which comprises a bottom plate, an outer frame fixedly installed at the outer side of the bottom plate, a sand blocking assembly arranged at the top of the bottom plate, a sand blocking mechanism arranged at the left side of the sand blocking assembly, and an adjusting mechanism arranged at the outer side of the sand blocking mechanism. The assemblable multi-stage sand blocking device for water and soil conservation is provided with the sand blocking mechanism and the adjusting mechanism, so that the angle of the blocking structure can be adjusted. The fixing mechanism is provided with a fixed conical cylinder which is inserted into the ground to provide basic support. When the moving block is pressed down, the circular hole is aligned with the limiting rod, the limiting rod is inserted into the locking position, the moving block is pressed down, the vertical rod pushes the circular plate and the conical block to move downward, the semicircular block drives the horizontal rod to expand outward, the fixed conical cylinder is tightly combined with the soil, the overturning resistance is enhanced, and the device has good overall stability.

Description

Technical Field

[0001] This invention relates to the field of soil and water conservation technology, specifically to an assemblable multi-stage sand-trapping device for soil and water conservation. Background Technology

[0002] An assemblable multi-stage sand-blocking device for soil and water conservation is an engineering device that achieves multi-stage sand-blocking through modular design, facilitating installation and maintenance. Its core function is to intercept sediment through a multi-stage filtration and collection structure. Simultaneously, its assemblable nature allows it to adapt to different terrains and governance needs. A search reveals Chinese Patent Publication No. CN222758801U, which discloses a multi-stage sand-blocking device for soil and water conservation, including a base. The advantages of this invention compared to existing technologies are: multi-stage sediment interception is achieved through interception mechanism one and interception mechanism two; the filter screen and filter screen seat are easy to clean; the extension seat height can be adjusted to a suitable interception height; and the overall device is more flexible and convenient to use. The existing technical solutions mentioned above have the following drawbacks: the interception structure angle is fixed, making it impossible to buffer angle adjustments; deformation or destruction of the entire structure is likely during flash floods; and the device is installed using a single fixing nail, resulting in poor stability and affecting its use. Therefore, this assemblable multi-stage sand-blocking device for soil and water conservation is proposed to solve the aforementioned problems. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides an assemblable multi-stage sand-blocking device for soil and water conservation, which has the advantages of adjustable interception structure angle and good overall stability, thus solving the problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the goal of adjustable interception structure angle and good overall stability of the device, the present invention provides the following technical solution: an assemblable multi-stage sand-blocking device for soil and water conservation, comprising a base plate, an outer frame fixedly installed on the outer side of the base plate, a sand-blocking component provided on the top of the base plate, a sand-blocking mechanism located on the left side of the sand-blocking component provided on the top of the base plate, an adjustment mechanism provided on the outer side of the sand-blocking mechanism, and a fixing mechanism extending to the bottom of the outer frame provided on the top of the outer frame;

[0007] The sand-blocking component includes a frame, the frame is fixedly installed on the top of the base plate, a top frame is movably installed on the top of the frame, a pull ring is fixedly installed on the top of the top frame, and an interception net is fixedly installed on the bottom of the top frame, extending to the inner side of the frame and fitting against its inner wall.

[0008] Preferably, the sand-blocking mechanism includes a base, a base fixedly installed on the top of the base plate located on the left side of the frame, a rotating rod rotatably connected between the front and rear sides of the inner wall of the base, an installation frame fixedly installed on the top of the rotating rod, sand-blocking nets movably installed on the left and right sides of the inner wall of the installation frame, a sand-blocking plate extending to its top slidably installed on the inner side of the installation frame, side plates that fit against the inner wall of the installation frame fixedly installed on the front and rear sides of the sand-blocking plate, a handle fixedly installed on the top of the sand-blocking plate, U-shaped plates fixedly installed on the front and rear sides of the installation frame, a movable frame extending to the outer side of the U-shaped plate slidably installed on the inner side of the U-shaped plate, a fixing spring fixedly connected to the inner wall of the U-shaped plate fixedly installed on the inner side of the movable frame, a crossbar located on the outer side of the U-shaped plate fixedly installed on the inner side of the movable frame, and a locking block that engages with the side plate fixedly installed on the outer side of the movable frame.

[0009] Preferably, the adjustment mechanism includes upright plates, with upright plates fixedly installed at both the front and rear ends of the top of the base. A U-shaped frame located outside the mounting frame is fixedly installed between the outer sides of the two upright plates. U-shaped rods extending to the inner sides of the U-shaped frame are slidably installed on both the front and rear sides of the U-shaped frame. A movable plate located inside the U-shaped frame is fixedly installed on one side of the U-shaped rod. A card seat is fixedly installed on both the front and rear sides of the mounting frame. A limit block is fixedly installed on one side of the movable plate, extending to the inner side of the card seat. A semi-cylinder extending to the outer side of the U-shaped frame is fixedly installed on the other side of the movable plate. A connecting spring located inside the semi-cylinder and fixedly connected to the movable plate is fixedly installed on the inner side of the U-shaped frame.

[0010] Preferably, the fixing mechanism includes a fixed conical cylinder. A fixed conical cylinder extending to the bottom of the outer frame is movably mounted on the top of the outer frame. A top box that fits against the top of the outer frame is fixedly mounted on the top of the fixed conical cylinder. Two boxes extending into the sidewall are fixedly mounted on the inner side of the fixed conical cylinder. A crossbar extending through the fixed conical cylinder and to the outside of the fixed conical cylinder is slidably mounted on one side of each box. A rectangular block slidably connected to the inner side of the box is fixedly mounted on the outer side of the crossbar. A component fixedly connected to the inner wall of the box and fitted onto one side of the rectangular block is fixedly mounted. A return spring is located on the outside of the crossbar. One end of the crossbar is fixedly installed with a semi-circular block located inside a fixed conical cylinder. A circular plate is slidably installed on the inside of the fixed conical cylinder above the semi-circular block. A conical block slidably connected to the two semi-circular blocks is fixedly installed at the bottom of the circular plate. A vertical rod extending to the inside of the top box is fixedly installed at the top of the circular plate. A movable block slidably connected to the outside of the top box is fixedly installed at the top of the vertical rod. Two circular holes are opened on the inner side of the movable block. A limiting rod penetrating the bottom circular hole is slidably installed on one side of the top box.

[0011] Preferably, the bottom of the movable block has two rectangular slots, the size of which is adapted to the side wall of the top box. The inner top wall of the top box is open, the inner bottom wall of the top box has a circular hole, and the inner side of the outer frame has a circular hole adapted to the fixed conical cylinder.

[0012] Preferably, the inner side of the fixed conical cylinder has two grooves, the size of which is adapted to the box body. The inner wall of the box body has a limiting hole adapted to the crossbar. One end of the crossbar is tapered, and the bottom of the fixed conical cylinder is tapered.

[0013] Preferably, the card holder has a limiting groove adapted to the limiting block on its inner side, and the number of limiting blocks on a single moving plate is seven and they are distributed in a ring at equal distances. The U-shaped frame has an arc-shaped hole adapted to the semi-cylinder on its inner side, and a through hole adapted to the U-shaped rod on its inner side.

[0014] Preferably, the top of the mounting frame is provided with mounting holes adapted to the sand-blocking plate, one side of the side plate is provided with a strip groove, the size of the strip groove is adapted to the locking block, and the outside of the crossbar is wrapped with a sponge sleeve.

[0015] Preferably, the number of interception nets is five and they are evenly distributed, the aperture size of the five interception nets decreases from left to right, and the number of pull rings is four and they are arranged in pairs in a symmetrical arrangement.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides an assemblable multi-stage sand-trapping device for soil and water conservation, which has the following beneficial effects:

[0018] 1. This modular, multi-stage sand-blocking device for soil and water conservation uses a sand-blocking mechanism and an adjustment mechanism. The sand-blocking mechanism rotates the mounting frame via a rotating rod, adjusting the angle between the sand-blocking net and the water flow. When the water flow velocity changes, the height of the sand-blocking plate is adjusted via a handle. Combined with the locking and fixing of the moving frame and the locking block, the interception area is dynamically adjusted. The connecting spring in the adjustment mechanism provides support for the moving plate. By pushing the semi-cylinder, the moving plate compresses the connecting spring, causing the limiting block to disengage from the limiting groove of the locking seat. At this time, the mounting frame can rotate freely around the rotating rod to adjust the angle. After releasing the semi-cylinder, the connecting spring pushes the moving plate back to its original position, and the limiting block re-locks into the corresponding limiting groove of the locking seat. Each moving plate has a limiting block, corresponding to multiple limiting grooves of the locking seat, forming multi-stage angle fixing points to meet different interception requirements and achieve the purpose of adjustable interception structure angle.

[0019] 2. This modular multi-stage sand-trapping device for soil and water conservation uses a fixed mechanism. The fixed mechanism provides basic support by inserting a fixed conical cylinder into the ground. Pressing down the moving block aligns the circular hole with the limiting rod. Inserting the limiting rod locks the position. When the moving block is pressed down, the upright pushes the circular plate and the conical block downward, forcing the semi-circular block to drive the horizontal bar to expand outward, so that the fixed conical cylinder is tightly combined with the soil, enhancing the anti-overturning ability and achieving the goal of good overall stability of the device. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0021] Figure 2 This is an exploded perspective view of the sand-trapping component of the present invention;

[0022] Figure 3 This is a perspective view of the sand-blocking mechanism of the present invention;

[0023] Figure 4 This is a partial perspective view of the sand-blocking mechanism of the present invention;

[0024] Figure 5 This is a partial sectional perspective view of the sand-blocking mechanism of the present invention;

[0025] Figure 6 This is a partial exploded perspective view of the sand-blocking mechanism of the present invention;

[0026] Figure 7 This is a perspective view of the adjustment mechanism of the present invention;

[0027] Figure 8 This is a partial cross-sectional perspective view of the adjustment mechanism of the present invention;

[0028] Figure 9 This is a perspective view of the fixing mechanism of the present invention;

[0029] Figure 10 This is a sectional perspective view of the fixing mechanism of the present invention;

[0030] Figure 11 This is a partial sectional perspective view of the fixing mechanism of the present invention.

[0031] In the diagram: 1. Base plate; 2. Outer frame; 3. Sand-blocking component; 31. Frame body; 32. Top frame; 33. Pull ring; 34. Interception net; 4. Sand-blocking mechanism; 401. Base; 402. Rotating rod; 403. Mounting frame; 404. Sand-blocking net; 405. Sand-blocking plate; 406. Side plate; 407. Handle; 408. U-shaped plate; 409. Moving frame; 410. Fixing spring; 411. Crossbar; 412. Locking block; 5. Adjustment mechanism; 51. Vertical plate; 52. U-shaped frame body; 53. 54 U-shaped rod, 55 movable plate, 55 card seat, 56 limiting block, 57 semi-cylinder, 58 connecting spring, 6 fixing mechanism, 601 fixed conical cylinder, 602 top box, 603 box body, 604 crossbar, 605 rectangular block, 606 return spring, 607 semi-circular block, 608 circular plate, 609 conical block, 610 upright rod, 611 movable block, 612 circular hole, 613 limiting rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-11 The present invention provides a technical solution: an assemblable multi-stage sand-blocking device for soil and water conservation, including a base plate 1, an outer frame 2 fixedly installed on the outer side of the base plate 1, a sand-blocking component 3 provided on the top of the base plate 1, a sand-blocking mechanism 4 located on the left side of the sand-blocking component 3 provided on the top of the base plate 1, an adjustment mechanism 5 provided on the outer side of the sand-blocking mechanism 4, and a fixing mechanism 6 extending to the bottom of the outer frame 2 provided on the top of the frame 2.

[0034] The base plate 1 serves as the supporting base for the entire device, providing stable support, dispersing the pressure of the upper structure to the ground, and preventing local settlement. The outer frame 2 fixes the edge of the base plate 1, enhancing the overall rigidity. In conjunction with the fixing mechanism 6, the conical cylinder 601 is positioned and fixed through the circular hole, ensuring the stability of the device when it is vertically inserted into the ground and protecting the internal components (such as the sand-blocking component 3) from lateral impact.

[0035] The sand-blocking component 3 includes a frame 31. The frame 31 is fixedly installed on the top of the base plate 1. A top frame 32 is movably installed on the top of the frame 31. A pull ring 33 is fixedly installed on the top of the top frame 32. An interception net 34 extending to the inside of the frame 31 and fitting against its inner wall is fixedly installed on the bottom of the top frame 32.

[0036] There are five interception nets 34, which are evenly distributed. The aperture size of the five interception nets 34 decreases from left to right. There are four pull rings 33, which are arranged in pairs and symmetrically distributed front and back.

[0037] The frame 31 serves as the frame for fixing the interceptor net 34, providing structural support and ensuring that the interceptor net 34 remains flat when unfolded, preventing deformation that could affect the filtration effect. The top frame 32 is movably installed on top of the frame 31 for easy and quick disassembly, supporting the interceptor net 34. It achieves a seal by fitting against the inner wall of the frame 31, preventing sediment from bypassing the interceptor net 34. The pull ring 33 provides a force application point, facilitating manual lifting of the top frame 32 to clean or replace the interceptor net 34, improving maintenance efficiency. The interceptor nets 34 (five in total, with decreasing aperture from left to right) provide multi-stage filtration. The coarse-pore net intercepts large sand and gravel particles, while the fine-pore net traps medium and small particles, forming a gradient filtration that reduces the risk of clogging in a single layer. Sand and gravel of different sizes settle at different levels, increasing the fine sand interception rate and reducing the downstream sediment content.

[0038] The sand-blocking mechanism 4 includes a base 401. The base 401 is fixedly installed on the top of the base plate 1, located on the left side of the frame 31. A rotating rod 402 is rotatably connected between the front and rear sides of the inner wall of the base 401. An installation frame 403 is fixedly installed on the top of the rotating rod 402. Sand-blocking nets 404 are movably installed on both the left and right sides of the inner wall of the installation frame 403. A sand-blocking plate 405 extending to the top of the installation frame 403 is slidably installed on the inner side of the installation frame 403. Side plates 406 that fit against the inner wall of the installation frame 403 are fixedly installed on both the front and rear sides of the sand-blocking plate 405. A handle 407 is fixedly installed on the top of the sand-blocking plate 405. U-shaped plates 408 are fixedly installed on both the front and rear sides of the mounting frame 403. A movable frame 409 extending to the outside of the U-shaped plate 408 is slidably installed on the inner side of the U-shaped plate 408. A fixing spring 410 fixedly connected to the inner wall of the U-shaped plate 408 is fixedly installed on the inner side of the movable frame 409. A crossbar 411 located on the outside of the U-shaped plate 408 is fixedly installed on the inner side of the movable frame 409. A locking block 412 that engages with the side plate 406 is fixedly installed on the outer side of the movable frame 409.

[0039] The top of the mounting frame 403 has a mounting hole that matches the sand-blocking plate 405. One side of the side plate 406 has a strip groove that matches the size of the slot 412. The outside of the crossbar 411 is covered with a sponge sleeve.

[0040] The base 401 is fixed to the base plate 1, providing a fulcrum for the rotation of the rotating rod 402. The rotating rod 402 allows the mounting frame 403 to rotate, adjusting the angle of the sand-blocking net 404 to adapt to different water flow directions and optimize interception efficiency. The mounting frame 403 supports the sand-blocking net 404 and the sand-blocking plate 405, forming an adjustable interception unit. The height is adjusted by sliding the top mounting hole with the sand-blocking plate 405. The sand-blocking net 404 initially intercepts suspended solids and larger particles in the water flow, reducing the burden on the subsequent interception net 34. The sand-blocking plate 405 and the side plate 406 allow the interception area to be changed through height adjustment to adapt to different water flow directions. To meet flow requirements (such as reducing height and resistance during strong water flow), the side plate 406 fits snugly against the inner wall of the mounting frame 403 to prevent sediment from bypassing from the side and ensure interception effectiveness. The handle 407 serves as the force point for manually operating the sand-blocking plate 405 to raise and lower, improving the ease of adjustment. The U-shaped plate 408 is fixed to the mounting frame 403, providing a sliding track for the movable frame 409. The movable frame 409 achieves elastic reset through the fixed spring 410, pushing the locking block 412 into the strip groove of the side plate 406 to fix the height of the sand-blocking plate 405. The crossbar 411 (covered with a sponge sleeve) facilitates manual pulling of the movable frame 409 and unlocking the locking block 412 to adjust the sand-blocking plate 405.

[0041] The adjustment mechanism 5 includes a vertical plate 51. The vertical plate 51 is fixedly installed at both the front and rear ends of the top of the base 401. A U-shaped frame 52 located outside the mounting frame 403 is fixedly installed between the outer sides of the two vertical plates 51. U-shaped rods 53 extending to the inner side of the U-shaped frame 52 are slidably installed on both the front and rear sides of the U-shaped frame 52. A movable plate 54 located inside the U-shaped frame 52 is fixedly installed on one side of the U-shaped rod 53. A card seat 55 is fixedly installed on both the front and rear sides of the mounting frame 403. A limit block 56 is fixedly installed on one side of the movable plate 54. The limit block 56 extends to the inner side of the card seat 55. A semi-cylinder 57 extending to the outer side of the U-shaped frame 52 is fixedly installed on the other side of the movable plate 54. A connecting spring 58 located inside the semi-cylinder 57 and fixedly connected to the movable plate 54 is fixedly installed on the inner side of the U-shaped frame 52.

[0042] The inner side of the card holder 55 is provided with a limiting groove that matches the limiting block 56. The number of limiting blocks 56 on a single moving plate 54 is seven and they are distributed in a ring at equal distances. The inner side of the U-shaped frame 52 is provided with an arc-shaped hole that matches the semi-cylinder 57. The inner side of the U-shaped frame 52 is provided with a through hole that matches the U-shaped rod 53.

[0043] The upright plate 51 is fixed to the base 401, supporting the U-shaped frame 52. The U-shaped frame 52 encloses the mounting frame 403, providing an installation platform for the adjustment mechanism. The U-shaped rod 53 slides on both sides of the U-shaped frame 52, driving the moving plate 54 to move horizontally. The moving plate 54 engages with the limiting groove of the card seat 55 through the limiting block 56, locking the rotation angle of the mounting frame 403. The card seat 55 is fixed to the mounting frame 403, providing multiple limiting grooves (seven distributed in a ring). The limiting block 56 is inserted into different grooves to achieve multi-angle fixation of the mounting frame 403 (such as vertical, inclined, etc.). The semi-cylinder 57 limits the movement range of the moving plate 54 to prevent excessive stretching. The connecting spring 58 provides elastic restoring force to ensure that the limiting block 56 is stably inserted into the card seat 55, enhancing the structure's impact resistance.

[0044] The fixing mechanism 6 includes a fixing conical cylinder 601. The fixing conical cylinder 601, extending to its bottom, is movably mounted on the top of the outer frame 2. A top box 602, which fits against the top of the outer frame 2, is fixedly mounted on the top of the fixing conical cylinder 601. Two box bodies 603, extending into the side wall, are fixedly mounted on the inner side of the fixing conical cylinder 601. A crossbar 604, penetrating through and extending to the outer side of the fixing conical cylinder 601, is slidably mounted on one side of the box body 603. A rectangular block 605, slidably connected to the inner side of the box body 603, is fixedly mounted on the outer side of the crossbar 604. A return spring, fixedly connected to the inner wall of the box body 603 and sleeved on the outer side of the crossbar 604, is fixedly mounted on one side of the rectangular block 605. 606. A semi-circular block 607 located inside the fixed conical cylinder 601 is fixedly installed at one end of the crossbar 604. A circular plate 608 located above the semi-circular block 607 is slidably installed on the inner side of the fixed conical cylinder 601. A conical block 609 slidably connected to the two semi-circular blocks 607 is fixedly installed at the bottom of the circular plate 608. A vertical rod 610 extending to the inner side of the top box 602 is fixedly installed at the top of the circular plate 608. A movable block 611 slidably connected to the outer side of the top box 602 is fixedly installed at the top of the vertical rod 610. Two circular holes 612 are opened on the inner side of the movable block 611. A limiting rod 613 penetrating the bottom circular hole 612 is slidably installed on one side of the top box 602.

[0045] The bottom of the movable block 611 has two rectangular slots, the size of which is adapted to the side wall of the top box 602. The inner top wall of the top box 602 is open, and the inner bottom wall of the top box 602 has a circular hole. The inner side of the outer frame 2 has a circular hole adapted to the fixed conical cylinder 601. The inner side of the fixed conical cylinder 601 has two slots, the size of which is adapted to the box body 603. The inner wall of the box body 603 has a limiting hole adapted to the crossbar 604. One end of the crossbar 604 is conical, and the bottom of the fixed conical cylinder 601 is conical.

[0046] The tapered design of the fixed conical cylinder 601 facilitates insertion into the ground and provides vertical stability. The inner groove fixes the box 603, which serves as a sliding track for the crossbar 604. The box 603 protects the return spring 606 and guides the crossbar 604 to slide horizontally. One end of the crossbar 604 has a tapered design, which facilitates pushing the semicircular block 607 outward. The semicircular block 607 is initially located inside the fixed conical cylinder 601. When the conical block 609 moves down, it pushes the semicircular block 607 outward to embed into the soil and enhance the fixing effect (similar to the principle of expansion bolts). The circular plate 608 transmits the downward pressure of the upright 610 to the conical block 609. The upright 610 is connected to the moving block 611, which converts manual operation into mechanical action. The moving block 611 cooperates with the side wall of the top box 602 through a rectangular groove to limit rotation. The circular hole 612 cooperates with the limiting rod 613 to lock the position of the moving block 611 and fix the expanded state of the conical block 609.

[0047] In use, insert the fixed conical cylinder 601 into the circular hole of the outer frame 2 and hammer it into the ground. Push the moving block 611 to align the circular hole 612 with the circular hole of the top box 602. Insert the limiting rod 613 to complete the initial fixation. Fix the frame 31 to the top of the base plate 1. Install the intercepting net 34 to the inside of the top frame 32 in sequence. Lift the top frame 32 with the pull ring 33 and embed it into the frame 31 to complete the assembly of the multi-stage filtration system. Rotate the rotating rod 402 to adjust the angle of the installation frame 403 to be perpendicular to the water flow direction. Adjust the height of the sand-blocking plate 405 with the handle 407 according to the sand particle size, and push the moving frame 409 to make the locking block 412 lock into the strip groove of the side plate 406 to fix the interception area. Slide the U-shaped rod 53 to adjust the position of the moving plate 54 so that the limiting block 56 locks into the limiting groove of the card seat 55. Adjust the angle of the sand-blocking mechanism 4 according to the water flow impact force. When the intercepting net 34 is blocked or the sand-blocking net 404 has too much sand, the system will be activated. At this time, lift the pull ring 33 to remove the top frame 32, clean the interception net 34, lift the sand-blocking plate 405 through the handle 407, clean the sand accumulated in the installation frame 403, rotate the rotating rod 402 to change the angle of the sand-blocking net 404 according to seasonal water flow changes, slide the U-shaped rod 53 to adjust the position of the limit block 56, optimize the interception efficiency, check the stability of the fixed cone 601 every month to ensure that the crossbar 604 does not retract due to soil loosening; check the elasticity of the connecting spring 58, and replace it in time if it is fatigued or deformed. When encountering heavy rain or mudslides, fully compress the connecting spring 58 to make the limit block 56 disengage from the card seat 55, allowing the installation frame 403 to tilt backward to avoid the impact and prevent structural breakage. After the impact, recalibrate the adjustment mechanism 5 and restore the interception state. If a single interception net 34 is damaged, it can be replaced individually. If the sand-blocking net 404 is torn, loosen the moving frame 409 to remove the damaged net, install a new net, and then re-fix the card block 412.

[0048] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0049] In summary, this modular multi-stage sand-blocking device for soil and water conservation, through the setting of sand-blocking mechanism 4 and adjustment mechanism 5, allows the sand-blocking mechanism 4 to rotate the mounting frame 403 via the rotating rod 402, thereby adjusting the angle between the sand-blocking net 404 and the water flow. When the water flow velocity changes, the height of the sand-blocking plate 405 can be adjusted via the handle 407, and the interception area can be dynamically adjusted by cooperating with the locking and fixing of the moving frame 409 and the locking block 412. The connecting spring 58 in the adjustment mechanism 5 provides support for the moving plate 54. By pushing the semi-cylinder 57, the moving plate 54 is driven to compress the connecting spring 58, causing the limiting block 56 to disengage from the limiting groove of the locking seat 55. At this time, the mounting frame 403 can rotate freely around the rotating rod 402 to achieve angle adjustment. After releasing the semi-cylinder 57, the connecting spring 58 pushes the moving plate 54 to reset, and the limiting block 56 is re-locked into the corresponding limiting groove of the locking seat 55. Each moving plate 54 is equipped with 7 limiting blocks. 56, corresponding to the multiple limiting slots of the card holder 55, forms a multi-level angle fixing point to meet different interception requirements, realizing the purpose of adjustable interception structure angle. By setting the fixing mechanism 6, the fixing mechanism 6 provides basic support by inserting the fixed cone 601 into the ground. Pressing down the moving block 611 aligns the round hole 612 with the limiting rod 613, inserts the limiting rod 613 to lock the position. When the moving block 611 is pressed down, the upright 610 pushes the round plate 608 and the cone block 609 to move down, forcing the semi-circular block 607 to drive the crossbar 604 to expand outward, so that the fixed cone 601 is tightly combined with the soil, enhancing the anti-overturning ability, and achieving the purpose of good overall stability of the device. It solves the problem that the angle of the interception structure is fixed, and it is impossible to buffer the angle adjustment. It is easy to deform or the overall structure is destroyed during the impact of flash floods. In addition, the device is installed by a single fixing nail, which has poor stability and affects the use of the device.

[0050] 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.

[0051] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular multi-stage sand-trapping device for soil and water conservation, comprising a base plate (1), an outer frame (2) fixedly installed on the outer side of the base plate (1), and a sand-trapping component (3) provided on the top of the base plate (1), characterized in that: The top of the base plate (1) is provided with a sand-blocking mechanism (4) located on the left side of the sand-blocking component (3), and an adjustment mechanism (5) is provided on the outside of the sand-blocking mechanism (4). The top of the outer frame (2) is provided with a fixing mechanism (6) extending to its bottom. The sand-blocking component (3) includes a frame (31), the top of the base plate (1) is fixedly installed with the frame (31), the top of the frame (31) is movably installed with a top frame (32), the top of the top frame (32) is fixedly installed with a pull ring (33), and the bottom of the top frame (32) is fixedly installed with an interception net (34) extending to the inside of the frame (31) and fitting against its inner wall.

2. The assemblable multi-stage sand-trapping device for soil and water conservation according to claim 1, characterized in that: The sand-blocking mechanism (4) includes a base (401). The base (401) is fixedly installed on the top of the base plate (1) on the left side of the frame (31). A rotating rod (402) is rotatably connected between the front and rear sides of the inner wall of the base (401). An installation frame (403) is fixedly installed on the top of the rotating rod (402). Sand-blocking nets (404) are movably installed on both the left and right sides of the inner wall of the installation frame (403). A sand-blocking plate (405) extending to the top of the inner side of the installation frame (403) is slidably installed. Side plates (406) that fit against the inner wall of the installation frame (403) are fixedly installed on both the front and rear sides of the sand-blocking plate (405). A handle (407) is fixedly installed on the top of the sand-blocking plate (405). U-shaped plates (408) are fixedly installed on both the front and rear sides of the mounting frame (403). A movable frame (409) extending to the outside of the U-shaped plate (408) is slidably installed on the inner side of the U-shaped plate (408). A fixing spring (410) fixedly connected to the inner wall of the U-shaped plate (408) is fixedly installed on the inner side of the movable frame (409). A crossbar (411) located on the outside of the U-shaped plate (408) is fixedly installed on the inner side of the movable frame (409). A locking block (412) that engages with the side plate (406) is fixedly installed on the outer side of the movable frame (409).

3. The modular multi-stage sand-trapping device for soil and water conservation according to claim 2, characterized in that: The adjustment mechanism (5) includes a vertical plate (51). The top and rear ends of the base (401) are both fixedly mounted with vertical plates (51). A U-shaped frame (52) located outside the mounting frame (403) is fixedly mounted between the outer sides of the two vertical plates (51). U-shaped rods (53) extending to the inner side of the U-shaped frame (52) are slidably mounted on both the front and rear sides of the U-shaped frame (52). A movable plate (54) located inside the U-shaped frame (52) is fixedly mounted on one side of the U-shaped rod (53). The mounting frame (403) is fixedly mounted with a card seat (55) on both the front and rear sides. A limit block (56) is fixedly mounted on one side of the movable plate (54). The limit block (56) extends to the inside of the card seat (55). A semi-cylinder (57) extending to the outside of the U-shaped frame (52) is fixedly mounted on the other side of the movable plate (54). A connecting spring (58) located inside the semi-cylinder (57) and fixedly connected to the movable plate (54) is fixedly mounted on the inside of the U-shaped frame (52).

4. The modular multi-stage sand-trapping device for soil and water conservation according to claim 1, characterized in that: The fixing mechanism (6) includes a fixing conical cylinder (601). The top of the outer frame (2) is movably mounted with the fixing conical cylinder (601) extending to its bottom. The top of the fixing conical cylinder (601) is fixedly mounted with a top box (602) that fits against the top of the outer frame (2). Two boxes (603) extending into the side wall are fixedly mounted on the inner side of the fixing conical cylinder (601). A crossbar (604) penetrating through and extending to the outside of the fixing conical cylinder (601) is slidably mounted on one side of the box (603). A rectangular block (605) slidably connected to the inner side of the box (603) is fixedly mounted on the outer side of the crossbar (604). A return spring (605) fixedly connected to the inner wall of the box (603) and sleeved on the outer side of the crossbar (604) is fixedly mounted on one side of the rectangular block (605). 6) One end of the crossbar (604) is fixedly installed with a semi-circular block (607) located inside the fixed conical cylinder (601). A circular plate (608) located above the semi-circular block (607) is slidably installed on the inner side of the fixed conical cylinder (601). A conical block (609) slidably connected to the two semi-circular blocks (607) is fixedly installed at the bottom of the circular plate (608). A vertical rod (610) extending to the inner side of the top box (602) is fixedly installed at the top of the vertical rod (610). A movable block (611) slidably connected to the outer side of the top box (602) is fixedly installed at the top of the vertical rod (610). Two circular holes (612) are opened on the inner side of the movable block (611). A limiting rod (613) penetrating the bottom circular hole (612) is slidably installed on one side of the top box (602).

5. The modular multi-stage sand-trapping device for soil and water conservation according to claim 4, characterized in that: The bottom of the movable block (611) has two rectangular slots, the size of which is adapted to the side wall of the top box (602). The inner top wall of the top box (602) is open, and the inner bottom wall of the top box (602) has a circular hole. The inner side of the outer frame (2) has a circular hole adapted to the fixed conical cylinder (601).

6. The assemblable multi-stage sand-trapping device for soil and water conservation according to claim 4, characterized in that: The inner side of the fixed conical cylinder (601) has two grooves, the size of which is adapted to the box body (603). The inner wall of the box body (603) has a limiting hole adapted to the crossbar (604). One end of the crossbar (604) is conical, and the bottom of the fixed conical cylinder (601) is conical.

7. The modular multi-stage sand-trapping device for soil and water conservation according to claim 3, characterized in that: The card holder (55) has a limiting groove adapted to the limiting block (56) on its inner side. The number of limiting blocks (56) on a single moving plate (54) is seven and they are distributed in a ring at equal distances. The U-shaped frame (52) has an arc-shaped hole adapted to the semi-cylinder (57) on its inner side. The U-shaped frame (52) has a through hole adapted to the U-shaped rod (53) on its inner side.

8. The assemblable multi-stage sand-trapping device for soil and water conservation according to claim 2, characterized in that: The top of the mounting frame (403) is provided with mounting holes that are compatible with the sand-blocking plate (405), and a strip groove is provided on one side of the side plate (406). The size of the strip groove is compatible with the locking block (412), and the outside of the crossbar (411) is covered with a sponge sleeve.

9. The assemblable multi-stage sand-trapping device for soil and water conservation according to claim 1, characterized in that: The number of intercepting nets (34) is five and they are evenly distributed. The aperture size of the five intercepting nets (34) decreases from left to right. The number of pull rings (33) is four and they are arranged in pairs in a symmetrical arrangement.

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