A weed seed filtering and collecting device for an irrigation water inlet

Abstract

The present invention discloses a weed seed filtering and collecting device for an irrigation water inlet, which includes a mounting plate (10) and a cascade filtering device. The mounting plate (10) is of a flat plate structure, and a filtering inlet (13) is arranged inside the mounting plate (10). The cascade filtering device is installed on one side of the mounting plate (10), and the cascade filtering device includes a cascaded channel structure for filtering and collecting weed seeds. The cascade filtering device is connected to the filtering inlet (13). The present invention is mainly used to simply and efficiently remove weed seeds in irrigation water so that they cannot enter farmland to harm crops. The device has the advantages of simple assembly, firmness and stability, support for multi-layer filtering, large volume ratio, and convenient replacement, and can be widely used in ditch irrigation.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural equipment, and particularly to an integrated filter collection and removal device for weed seeds at an irrigation water inlet. Background Art

[0002] Weed seeds entering farmland along with agricultural irrigation water are one of the main ways of spreading weeds in the fields. Most of the agricultural irrigation water in our country comes from rivers. During the irrigation process, the water flow carries a large number of plant seeds, including a large number of weeds and plant seeds that affect the growth of crops, competing with crops for nutrients, water, sunlight and space, preventing ventilation and light transmission in the fields, and seriously affecting the growth of crops. Therefore, filtering and collecting weed seeds at the source of farmland irrigation is an effective means to remove the above hazards. At the same time, it is also very important to improve the convenience of cleaning the filter screen blockage of the device for filtering, collecting and removing weed seeds in practical applications, strengthen the fixing stability of the device in the water channel, and the cleaning effect and efficiency, as well as the convenience of removing the weed seeds after cleaning. Summary of the Invention

[0003] The present invention discloses a weed seed filtering and collecting device for an irrigation water inlet, which is mainly used to simply and efficiently remove weed seeds in irrigation water so that they cannot enter the farmland to harm crops. The device has the advantages of simple assembly, firmness and stability, support for multi-layer filtration, large volume ratio and convenient replacement. The technical solution is as follows:

[0004] It includes a mounting plate and a cascaded filtering device. The mounting plate is a flat plate structure, and a filtering inlet is arranged inside the mounting plate. The cascaded filtering device is installed on one side of the mounting plate. The cascaded filtering device includes a channel structure for filtering and collecting weed seeds in cascade, and the cascaded filtering device communicates with the filtering inlet. The size of the mounting plate should be larger than the size of the irrigation water channel inlet, and the device as a whole is used to fit and fix the mounting plate on the irrigation water channel opening by the water flow pressure at the water channel inlet. The multi-stage cascaded filtering device can effectively increase the filtering and collecting capacity and is easy to expand, which is beneficial to enhancing the maintenance period and expandability of the weed seed filtering and collecting device. It should be noted that the cascade here refers to a multi-stage structure that can extend longitudinally to increase the length of the filtering channel and the filtering volume, thereby enhancing the filtering effect and reducing the maintenance period. Different from the nested type of the pre-filter screen, it only enhances the number of filtering layers and does not significantly increase the filtering volume.

[0005] Preferably, the cascaded filtering device includes a channel structure composed of at least two connected cascaded sieves. The cascaded sieves are cylindrical, and sieve holes with an inner diameter smaller than the diameter of weed seeds are arranged on the outer wall of the cascaded sieves. Each of the cascaded sieves includes at least one cascaded sieve with a gradually shrinking inner diameter.

[0006] Preferably, the number of the cascaded sieves is three. Each of the cascaded sieves is a first sieve, a second sieve, and a third sieve respectively. The first sieve is a straight cylindrical tube and is connected to the filtration inlet. The second sieve and the third sieve are conical tubes with gradually decreasing inner diameters.

[0007] Preferably, the cascaded sieves are made of a soft material. A support frame is arranged inside each of the cascaded sieves. A terminal filter screen is arranged at the water outlet end of the cascaded filtration device. A sealing layer is arranged at the connection between the cascaded filtration device and the mounting plate.

[0008] Preferably, the cascaded sieves are made of gauze or nylon. The support frame is a spiral support frame or a steel ring support frame. A first gap is arranged between the connection of the spiral support frame and the cascaded sieve.

[0009] Preferably, the cascaded sieves are made of gauze or nylon. The support frame is a spiral support frame or a steel ring support frame. The overall stability of the spiral support frame is better than that of the steel ring support frame, and the material of the steel ring support frame is relatively more economical. When using soft gauze or nylon materials, it is more convenient to store and take out the filtered weed seeds.

[0010] Preferably, each of the cascaded sieves is connected by a cloth sleeve. A rope is arranged on the cloth sleeve, and a clip is arranged on the rope. The cloth sleeve is shrunk to seal the cascaded sieve by tightening the rope with the clip.

[0011] Preferably, the cascaded filtration device includes a filtration channel. The filtration channel includes a filtration channel bottom plate and filtration channel side plates arranged on the filtration channel bottom plate. The filtration channel bottom plate and the filtration channel side plates form a semi-closed channel structure with an open top. At least one filter plate installation vertical groove is arranged on the filtration channel side plates. The filter plate installation vertical groove is a vertically opened groove. A filter plate is further included. The filter plate is matched and installed with the filtration channel through the filter plate installation vertical groove. At least one layer of filter mesh is arranged on the filter plate. The installation of specific filtration grooves makes the disassembly convenient, the structure is stable without side slip. At the same time, the double-layer filter screen and the cavity-type filter plate can make the weed seeds stay in the filter plate as much as possible, and can accommodate more weed seeds, reducing the maintenance period and facilitating cleaning. The hinge pull ring is convenient for taking out and processing the filter plate.

[0012] Preferably, the overall shape of the filter plate is a semi-closed cavity structure with an open upper end. A filter plate installation groove is provided on the filter plate. The filter plate is inserted into the filter plate installation vertical groove through the filter plate installation groove for mating installation. The cavity in the middle of the filter plate is the middle cavity of the filter plate. An inner filter screen is provided on the side wall of the filter plate facing the water flow direction, and an outer filter screen is provided on the side wall of the filter plate facing away from the water flow direction. The aperture of the inner filter screen is larger than the diameter of weed seeds, and the aperture of the outer filter screen is smaller than the aperture of weed seeds. A hinge pull ring is provided on the side wall of the filter plate close to the ditch. The installation of specific filter grooves makes the disassembly convenient, the structure stable without side slip. At the same time, the double-layer filter screen and the cavity-type filter plate can keep weed seeds in the filter plate as much as possible, and can accommodate more weed seeds, reducing the maintenance period and facilitating cleaning. The hinge pull ring is convenient for taking out and processing the filter plate.

[0013] Preferably, a fixing device is provided on the mounting plate, and the fixing device is a fixing pin or a drill nail. The setting of the fixing device is beneficial to the firm installation of the whole device at the ditch entrance.

[0014] Preferably, a pre-filter screen is installed on the other side of the mounting plate where the cascade filtering device is installed. The pre-filter screen is a single-layer, double-layer or multi-layer screen structure, and the installation method of the pre-filter screen on the mounting plate is slot installation or screw installation. The setting of the pre-filter screen can initially filter out sundries with larger apertures and separate and collect large sundries and weed seeds as much as possible.

[0015] The above-disclosed weed seed filtering and collecting device for the irrigation water inlet is mainly used to simply and efficiently remove weed seeds in the irrigation water so that they cannot enter the farmland to harm crops. This device has the advantages of simple assembly, firmness and stability, support for multi-layer filtering, large volume ratio, and convenient replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0017] Figure 2 It is a left view of the single-layer slot mounting plate of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0018] Figure 3 It is a left view of the double-layer slot mounting plate of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0019] Figure 4 It is a left view of the three-layer slot mounting plate of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0020] Figure 5 Left view of the single-layer nut fixed mounting plate of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0021] Figure 6 Schematic diagram of the installation structure of the mounting seat at the water inlet of the irrigation canal.

[0022] Figure 7 Schematic diagram before assembly of the three-dimensional structure of Embodiment 2 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0023] Figure 8 Side view of the improved type with added storage gap of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention.

[0024] Figure 9 Side view of the cascaded filtering device with added sealing layer in the present invention.

[0025] Figure 10 Schematic diagram of the ditch part with the plug-in plate mounting table.

[0026] In the drawings: 10, mounting plate; 11, fixed pin; 121, first screen mounting groove; 122, second screen mounting groove; 123, third screen mounting groove; 125, front screen fixing hole; 13, filtering inlet; 14, drill nail; 20, front screen; 21, screen hole; 30, first screen; 31, spiral support frame; 32, second screen; 33, steel ring support frame; 34, third screen; 40, cloth sleeve; 42, clip; 43, end filter screen; 45, rope; 49, sealing layer; 50, canal side wall; 51, canal bottom surface; 52, plug-in plate mounting table; 53, plug-in plate mounting groove; 900, canal; 901, canal wall; 902, mounting seat; 103, filtering channel bottom plate; 104, filtering channel side plate; 105, filter plate mounting vertical groove; 108, drill nail; 200, filter plate; 201, filter plate mounting groove; 202, middle cavity of the filter plate; 203, inner filter screen; 204, outer filter screen; 205, hinge pull ring; 301, first gap. Detailed implementation manners

[0027] The embodiments of the present invention will be further described below with reference to the drawings.

[0028] Embodiment 1

[0029] As Figure 1 Side view of Embodiment 1 of the weed seed filtering and collecting device for the irrigation water inlet of the present invention, including a mounting plate 10, on the side wall of the mounting plate 10 there is a fixed pin 11, and the fixed pin 11 is a cross bar. Figure 6Schematic diagram of the installation structure of the mounting seat at the water inlet of the irrigation canal. The device as a whole is fixed by inserting the fixing pin 11 into the mounting seats 902 provided on the canal walls 901 on both sides of the irrigation water inlet of the canal 900. A pre-filter screen 20 is installed on one side of the mounting plate 10. The pre-filter screen 20 is a hemispherical curved screen. The pre-filter screen 20 is provided with screen holes 21. The pre-filter screen 20 can be a single-layer, double-layer or multi-layer hemispherical curved screen. The assembly method of the pre-filter screen 20 and the mounting plate 10 can be, for example, Figure 2 , Figure 3 , Figure 4 shown in the slot-type installation method. Among them, as shown in Figure 2 , the single-layer pre-filter screen 20 is installed on the mounting plate 10 through the first screen installation groove 121 provided on the mounting plate 10. Among them, as shown in Figure 3 , the double-layer pre-filter screen 20 is installed on the mounting plate 10 through the first screen installation groove 121 and the second screen installation groove 122 provided on the mounting plate 10. Among them, as shown in Figure 4 , the triple-layer pre-filter screen 20 is installed on the mounting plate 10 through the first screen installation groove 121, the second screen installation groove 122 and the third screen installation groove 123 provided on the mounting plate 10. As shown in Figure 5The figure shows the installation method of the front screen in the nut-fixed type. A number of front screen fixing holes 125 are provided around the filtration inlet 13 to fix the front screen 20. On the other side of the mounting plate 10 where the front screen 20 is installed, there is a first screen 30. The first screen 30 is in the shape of a hollow cylinder, such as a cylindrical tube or a square tube, preferably a hollow cylindrical tube. The first screen 30 is connected to the filtration inlet 13 on the mounting plate 10. It can be fixed by nailing the edge of the first screen to the mounting plate, or fixed with nuts similar to the front screen 20. The first screen 30 is made of a soft material such as nylon, and a spiral support frame 31 is provided inside it. The first screen 30 is connected to the second screen 32 through a cloth sleeve 40. At least one steel ring support frame 33 is provided inside the second screen 32, and the steel ring support frame 33 provides structural support for the second screen 32. A rope 45 is provided on the outer wall of the cloth sleeve 40, and a clip 42 is provided on the rope 45. By tightening the rope 45 through the clip 42, the cloth sleeve 40 can be tightened, so that the first screen 30 can be conveniently closed, taken out, and the weed seeds staying in the first screen 30 can be cleaned and then the screen can be recycled. Similarly, the second screen 32 is connected to the third screen 34 through a cloth sleeve 40, and a rope 45 is also provided on the outer wall of the cloth sleeve 40, and a clip 42 is provided on the rope 45. Preferably, the number of clips 42 is two. Clamping and locking the rope 45 from both ends is more convenient than the locking method at one end. The second screen 32 is a screen with an inner diameter gradually decreasing relative to the first screen. The third screen 34 is a screen with an inner diameter gradually decreasing relative to the second screen 32. The sizes of the screen holes of the first screen 30, the second screen 32, and the third screen 34 can filter out weed seeds. It is sufficient that the inner diameter of at least one of the first screen, the second screen, and the third screen gradually decreases. Through the design of gradually decreasing inner diameters of the first screen 30, the second screen 32, and the third screen 34, weed seeds can adhere to the inner walls of the first screen 30, the second screen 32, and the third screen 34 to achieve filtration. The effects of collision and gravity will also play a part in filtration. The cascaded and gradually changing inner diameter screening method has a larger attachment area compared to the vertical screen setting, greatly reducing the maintenance workload and not easily blocking the water channel. Through the cloth sleeve setting between the cascades, it is convenient to seal and take out each stage of the screen for cleaning, facilitating the cleaning of the screen that has collected weeds by the staff. The internal steel rings of each stage of the screen are not limited to the internal steel ring settings in the above embodiments. For example, the first screen 30, the second screen 32, and the third screen 34 can all be spiral support frames 31 or all be steel ring support frames 33. Preferably, the spiral support frame 31 has better structural stability. The aperture of the screen hole 21 of the front screen 20 is slightly larger than the diameter of the weed seeds, mainly used to filter out large weeds and other debris, so that the subsequent screens can collect as many weed seeds as possible.

[0030] Figure 8Side view of the improved type with an added storage gap for Embodiment 1 of the weed seed filtering and collecting device at the irrigation water inlet of the present invention. A first gap 301 is reserved between the connection points of the spiral support frame 31 and the first screen 30 and the second screen 32. The first gap 301 is provided to ensure that the cloth cover 40 can be tightly tied when using the clip 42 and the rope 45 without being restricted by the spiral support frame 31. A terminal filter screen 43 is provided at the outlet end of the third screen 34. The aperture of the screen holes of the terminal filter screen 43 is smaller than the aperture of the weed seeds. The terminal filter screen 43 is provided to ensure that there is no outlet for the weed seeds in the third screen 34, so as to ensure the full filtration of the weed seeds by the entire weed seed filtering and collecting device.

[0031] Figure 9 Side view of the cascade filtration device with a sealed layer added in the present invention. A sealed layer 49 is provided at the front end of the first filter screen 30 to seal the connection between the first filter screen 30 and the mounting plate 10 after installation.

[0032] Embodiment 2

[0033] Figure 7This is a schematic diagram before the three-dimensional structure assembly of Embodiment 2 of the weed seed filtering and collecting device at the irrigation water inlet of the present invention. It includes a filtering channel, which consists of a filtering channel bottom plate 103 and filtering channel side plates 104 arranged on the filtering channel bottom plate 103. The filtering channel bottom plate 103 and the filtering channel side plates 104 form a semi-closed channel structure with an open top. Preferably, the filtering channel bottom plate 103 and the filtering channel side plates 104 are integrally formed to avoid additional installation gaps. The size of the formed channel structure is larger than the diameter of the filtering port 13 to ensure full coverage of the filtering port 13, so that all the water flow passes through the filtering channel. A filtering plate installation vertical groove 105 is provided on the filtering channel side plate 104. The filtering plate installation vertical groove 105 is a vertical through groove structure. At one end of the channel structure formed by the filtering channel bottom plate 103 and the filtering channel side plates 104 close to the ditch water inlet, a mounting plate 10 is provided. The filtering channel is installed in the ditch by pressing the mounting pressure plate 103 tightly against the outer wall of the ditch water inlet. The device as a whole is further fixed in the relatively soft soil or cement ground outside the water channel inlet through the drill nails 14 provided at the bottom end of the mounting plate 10. The width of the bottom plate of the filtering channel usually matches the width of the ditch or is slightly smaller than the width of the ditch. The height of the filtering channel side plate usually matches the height of the ditch, but it can also be higher or lower than the height of the ditch. It also includes a filtering plate 200. The overall shape of the filtering plate 200 is a semi-closed cavity structure with an open upper end. A filtering plate installation groove 201 is provided on the filtering plate 200. The filtering plate 200 is inserted into the filtering plate installation vertical groove 105 through the filtering plate installation groove 201 for matching installation. The matching installation through the filtering plate installation groove 201 and the filtering plate installation vertical groove 105 is stable and reliable, and at the same time prevents side shift. The cavity in the middle of the filtering plate 200 is the middle cavity 202 of the filtering plate. An inner filter screen 203 is provided on the side wall of the filtering plate 200 facing the water flow direction. An outer filter screen 204 is provided on the side wall of the filtering plate 200 facing away from the water flow direction. A hinge pull ring 205 is provided on the side wall of the filtering plate 200 close to the ditch. The side of the filtering channel where the water inlet is located, that is, the side where the mounting plate 10 is provided, is the filtering inlet 13.After the filter plate 200 is assembled, the aperture of the inner filter screen 203 is relatively large, allowing smaller weed seeds to pass through. The aperture of the outer filter screen 204 is relatively small, preventing weed seeds from passing through. Then, the weed seeds that enter the middle cavity of the filter plate will settle to the bottom of the middle cavity and will not enter the farmland along with the water flow. After a certain amount of weed seeds have settled, the filter plate can be pulled out of the filter channel through the hinge pull ring 205 for cleaning, thus completing the collection and removal of weed seeds. Multiple filter plate installation vertical grooves 105 can be provided in the filter channel to install multiple filter plates 200, so as to achieve the effect of multi-level cascaded filtration. Moreover, it can facilitate the gap when replacing the filter plate to ensure filtration. When the front filter plate is blocked due to a large accumulation of weed seeds, the subsequent filter plates 200 can still filter weed seeds, which can reduce the maintenance frequency during maintenance and save maintenance labor. However, due to the increase in the cost of installing multiple filter plates and the decrease in marginal benefits, it is usually better to install 2-3 filter plates as the preferred implementation. The detachable installation method of the filter plate 200 and the filter channel is not limited to the installation method of the filter plate installation groove 201 and the filter plate installation vertical groove 105. The filter plate can also be installed without setting an installation groove and only set as a flat plate. Although the stability of such installation and the volume of the middle cavity under the same vertical groove width are reduced, it is relatively convenient for processing. At the same time, the semi-closed structure of the filter channel is beneficial to saving materials, observing the water flow situation, and ensuring that the ditch water still passes above the filter channel when the filter screen is blocked.

[0034] Figure 10 It is a schematic diagram of a part of the ditch with a plug-in board installation platform and a schematic diagram of the structure of an existing water channel, including a water channel side wall 50 and a water channel bottom surface 51. A plug-in board installation platform 52 is provided on the water channel side wall 50, and a plug-in board installation groove 53 is provided on the plug-in board installation platform 52. Through the plug-in board installation groove 53, the installation board 10 of the irrigation water inlet weed seed filtration and collection device in Embodiment 1 and Embodiment 2 can be inserted for installation, so that the irrigation water inlet weed seed filtration and collection device can be stably installed without additional fixing parts. For relatively old irrigation water channels, the fixing methods similar to the fixed pins 11 and drill nails 14 described in Embodiment 1 and Embodiment 2 can be used to achieve stable fixation.

[0035] Especially for direct-seeded rice fields with high weed resistance to herbicides, the effect of herbicides will be significantly reduced. Using the irrigation water inlet weed seed filtration and collection device described in the present invention for the prevention and control of weeds in rice fields can achieve green prevention and control. Especially for organic cultivation without the use of herbicides, it is overall economical and practical.

[0036] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An irrigation water inlet weed seed filtering and collecting device, characterized in that, it includes a mounting plate and a cascaded filtering device. The mounting plate is a flat plate structure, and the mounting plate is provided with a filtering inlet in a penetrating manner. The cascaded filtering device is installed on one side of the mounting plate. The cascaded filtering device includes a channel structure for filtering and collecting weed seeds in cascade, and the cascaded filtering device communicates with the filtering inlet; The cascaded filtering device includes a channel structure composed of at least two connected cascaded sieves. The cascaded sieves are cylindrical, and the cascaded sieves are provided with sieve holes with an inner diameter smaller than the diameter of weed seeds. Each of the cascaded sieves includes at least one cascaded sieve with a gradually shrinking inner diameter; the number of cascaded sieves is three, and each of the cascaded sieves is a first sieve, a second sieve, and a third sieve respectively. The first sieve is a straight cylindrical tube, and the first sieve communicates with the filtering inlet. The second sieve and the third sieve are conical tubes with a gradually shrinking inner diameter; The cascaded sieves are connected by a cloth sleeve. The cloth sleeve is provided with a rope, and the rope is provided with a buckle. By tightening the rope with the buckle, the cloth sleeve is shrunk to seal the cascaded sieves; The cascaded filtering device includes a filtering channel. The filtering channel includes a filtering channel bottom plate and filtering channel side plates arranged on the filtering channel bottom plate. The filtering channel bottom plate and the filtering channel side plates form a semi-closed channel structure with an open top. At least one filtering plate installation vertical groove is provided on the filtering channel side plates. The filtering plate installation vertical groove is a vertical slot. It also includes a filtering plate, and the filtering plate is matched and installed with the filtering channel through the filtering plate installation vertical groove. The filtering plate is provided with at least one layer of filter mesh; The overall shape of the filtering plate is a semi-closed cavity structure with an open upper end. The filtering plate is provided with a filtering plate installation groove, and the filtering plate is inserted into the filtering plate installation vertical groove through the filtering plate installation groove for matching installation. The cavity in the middle of the filtering plate is the middle cavity of the filtering plate. An inner filter mesh is provided on the side wall of the filtering plate facing the water flow direction, and an outer filter mesh is provided on the side wall of the filtering plate facing away from the water flow direction. The aperture of the inner filter mesh is larger than the diameter of weed seeds.

2. The irrigation water inlet weed seed filtering and collecting device according to claim 1, characterized in that, the cascaded sieves are made of a soft material. A support frame is arranged inside each of the cascaded sieves. A terminal filter screen is arranged at the water outlet end of the cascaded filtering device, and a sealing layer is arranged at the connection between the cascaded filtering device and the mounting plate.

3. The irrigation water inlet weed seed filtering and collecting device according to claim 2, characterized in that, the support frame is a spiral support frame or a steel ring support frame, and a first gap is arranged between the connection of the spiral support frame and the cascaded sieve.

4. The irrigation water inlet weed seed filtering and collecting device according to any one of claims 1-3, characterized in that, a fixing device is arranged on the mounting plate, and the fixing device is a fixing bolt or a drill nail.

5. The weed seed filtering and collecting device for the irrigation water inlet according to any one of claims 1-3, characterized in that, a pre-filter screen is installed on the other side of the mounting plate for mounting the cascade filtering device. The pre-filter screen is a single-layer or a screen structure with two or more layers. The pre-filter screen is installed on the mounting plate by slot installation or screw installation.

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