River water source drip irrigation head device

Abstract

The utility model discloses a river water source drip irrigation head device which comprises a first-stage filtering assembly, a second-stage filtering assembly, a third-stage filtering assembly, a fourth-stage filtering assembly and a fourth-stage filtering assembly. A secondary filtering assembly is mounted above a water inlet of the head water tank; the aperture of a filter screen of the second-stage filter assembly is 120-150 meshes; the water inlet end of the water pumping pipeline is positioned behind the primary filtering assembly, and the water outlet end is positioned in front of the secondary filtering assembly. Due to the design of the water pumping pipeline, the water inlet end is located behind the first-stage filtering assembly, and the water outlet end is located in front of the second-stage filtering assembly, so that the water flow path is optimized, the water pumping efficiency is improved, and the energy loss is reduced. The overall structural design is compact and reasonable, installation and maintenance are convenient, and the operation difficulty and cost are reduced. By means of the two-stage filtering system, the utilization efficiency of drip irrigation water is improved, and the service life of drip irrigation equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural irrigation, and relates to a head device for drip irrigation with river water as the water source. Background Art

[0002] In the field of agricultural irrigation, drip irrigation systems are widely used due to their characteristics of high water conservation and precise water supply. However, when using river water for drip irrigation, impurities such as suspended solids, sediment, algae, abnormal colors and odors, and suspended pollutants in the river water pose severe challenges to the filters of the drip irrigation system. These impurities easily clog the drip heads and pipes of the drip irrigation system, affecting the efficiency and service life of the drip irrigation system.

[0003] Traditional river water drip irrigation systems usually adopt single-stage filtration. This filtration method has poor removal effect on fine suspended solids and is difficult to meet the requirements of high-quality drip irrigation. In addition, as the filter element becomes clogged, the pressure loss of the system increases, resulting in increased energy consumption and maintenance costs. Moreover, the cleaning and replacement of traditional filters are cumbersome, not only consuming manpower and material resources, but also possibly causing the performance of the entire drip irrigation system to decline due to untimely maintenance.

[0004] In order to improve the filtration effect of river water drip irrigation systems and reduce the maintenance workload, some improved filtration devices have emerged on the market, such as automatic backwashing filters, centrifugal filters, etc. Although these devices improve the filtration efficiency to a certain extent, they often have complex structures, high costs, and are still difficult to maintain high-efficiency filtration performance under high-flow conditions. Summary of the Utility Model

[0005] In view of this, the utility model aims to provide a head device for river water source drip irrigation with a simple structure, low cost, high filtration efficiency, and easy maintenance to solve the above problems in the prior art. Through an innovative two-stage filtration system, the device can effectively remove large and small particle impurities in river water, ensuring the long-term stable operation of the drip irrigation system.

[0006] Through long-term exploration and attempts, as well as multiple experiments and efforts, the inventors continuously improved and innovated. To solve the above technical problems, the technical solution provided by the utility model is to provide a head device for river water source drip irrigation, including:

[0007] A primary filtration component, arranged on the river surface, with a filter mesh aperture of 80 - 100 meshes;

[0008] A head water tank, above the water inlet of which a secondary filtration component is installed; the filter mesh aperture of the secondary filtration component is 120 - 150 meshes;

[0009] A pumping pipeline, the water inlet end of which is located behind the primary filtration component and the water outlet end of which is located in front of the secondary filtration component.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] By arranging a primary filtration component on the river surface, large particulate impurities in the river water are effectively removed. The aperture of its filter net is 80 - 100 meshes, which ensures the filtration effect while reducing the risk of blockage. The secondary filtration component is installed above the water inlet of the head tank, and its filter net with an aperture of 120 - 150 meshes further filters finely to ensure the cleanliness of the water quality of the drip irrigation system. In addition, the design of the pumping pipeline makes the water inlet end located behind the primary filtration component and the water outlet end located in front of the secondary filtration component. Such a layout optimizes the water flow path, improves the water extraction efficiency, and reduces energy loss. The overall structure is designed compactly and reasonably, facilitating installation and maintenance, reducing the operation difficulty and cost. Through this two-stage filtration system, not only the utilization efficiency of the drip irrigation water is improved, but also the service life of the drip irrigation equipment is extended, which has important practical application value for arid and water-scarce areas.

[0012] On the basis of the above technical solution, the present utility model can be further improved as follows:

[0013] Further: The filter net of the primary filtration component is set as a hemispherical bottom net and a cylindrical side net, and a buoyancy ring is fixedly connected above the cylindrical side net.

[0014] Preferably, the height of the primary filtration component is not less than 1.5 m; the diameter of the cylindrical side net is not less than 1 m.

[0015] Preferably, the distance between the primary filtration component and the river bank is at least 2 m.

[0016] Preferably, the end of the water inlet of the pumping pipeline is located on the axis of the cylindrical side net.

[0017] Compared with the prior art, the beneficial effects of adopting the above further technical solution are as follows:

[0018] By arranging the buoyancy ring, the stability of the primary filtration component on the river surface is enhanced, and even in the case of large water flow fluctuations, it can ensure that the filtration component will not capsize. The combined use of the hemispherical bottom net and the cylindrical side net increases the filtration area, enabling the river water to pass through the filter net more fully, and improving the filtration efficiency. The design of the cylindrical side net helps to guide the water flow, making the water flow through the filter net more evenly, reducing the formation of turbulent flow and eddy current, which helps to improve the filtration effect and reduce the blockage of the filter net.

[0019] On the basis of the above technical solution, the present utility model can be further improved as follows:

[0020] Further: The secondary filtration component is inclined, and the inclination angle is 30 - 50°.

[0021] Preferably, the secondary filtration component is a rectangular stainless steel mesh plate, and its width and length are respectively designed to adapt to the dispersion width and the maximum extension path during river water filtration.

[0022] Compared with the prior art, the beneficial effects of adopting the above further technical solutions are as follows:

[0023] The inclined secondary filtration component helps to utilize gravity and water flow impact force to promote the automatic sliding of the impurities intercepted during the filtration process, reducing the possibility of blockage, thereby maintaining long-term high-efficiency filtration performance. At the same time, the selection of the rectangular stainless steel mesh plate not only provides long-term stable performance due to its corrosion resistance and durability, but also the design of its width and length ensures a perfect match with the flow characteristics of the river water. Such a design enables the river water to flow evenly through the filter screen during filtration, avoiding problems such as insufficient filtration caused by local excessive flow velocity or blockage caused by too slow flow velocity. In addition, the material of the stainless steel mesh plate is also convenient for cleaning and maintenance, extending the service life of the filtration component and ensuring the efficient and stable operation of the entire drip irrigation head device. In short, this improved secondary filtration component achieves better filtration effect and lower maintenance cost through its unique design and material selection, significantly improving the technical performance and economy of the entire drip irrigation system.

[0024] Based on the above technical solutions, the present utility model can be further improved as follows:

[0025] Further: The head tank is provided with a drip irrigation water supply pipe, and the pipe orifice of the drip irrigation water supply pipe is more than 40 cm away from the bottom of the head tank.

[0026] Compared with the prior art, the beneficial effects of adopting the above further technical solutions are as follows:

[0027] Firstly, this design is conducive to the static settlement of the filtered river water in the head tank for a period of time, enabling a small amount of fine impurities in the water to have sufficient time and space to settle to the bottom of the tank, thereby reducing the blockage risk of the water supply pipeline in the drip irrigation system. Secondly, the higher pipe orifice setting ensures that the water drawn from the tank is relatively clean water that has undergone preliminary sedimentation treatment, further improving the water quality of the drip irrigation water. In addition, this design also simplifies the cleaning and maintenance work inside the tank, because the impurities deposited at the bottom of the tank can be more easily removed through the sewage outlet without interfering with the normal operation of the water supply pipe. In short, this improved tank design effectively improves the filtration efficiency and operation reliability of the drip irrigation system by promoting the sedimentation of impurities and simplifying the cleaning and maintenance, ensuring the cleanliness of the drip irrigation water, which is of great significance for improving the irrigation effect of crops and protecting the drip irrigation equipment.

[0028] Based on the above technical solutions, the present utility model can be further improved as follows:

[0029] Further: A sewage outlet is provided at the lower part or bottom of the header tank.

[0030] Compared with the prior art, the beneficial effects of adopting the above further technical solution are as follows:

[0031] The sewage outlet provided at the bottom of the tank provides great convenience for cleaning the tank, enabling maintenance personnel to directly use the river water filtered by the first stage to clean the tank, thus ensuring the easy availability and low cost of the cleaning water source. During the cleaning process, opening the sewage outlet allows the wastewater carrying sediment to directly drain out of the tank, avoiding the cumbersome manual cleaning and secondary pollution of the cleaning water source. In addition, this design helps to quickly remove the deposited impurities in the tank, keep the inside of the tank clean, and thus ensure the purity of the drip irrigation water. By simplifying the cleaning process, not only the maintenance efficiency is improved, but also the maintenance cost is reduced, ensuring the long-term stable operation of the drip irrigation header device.

[0032] Based on the above technical solution, the present utility model can also be improved as follows:

[0033] Further: A vertical plate and side plates are provided above the water inlet of the header tank. A water discharge hole is provided at the top of the vertical plate, and the water outlet end of the pumping pipeline is connected to the water discharge hole; The side plates are two and are respectively arranged on both sides of the vertical plate for supporting the detachable secondary filtration component; The secondary filtration component, the vertical plate and the side plates completely cover the water inlet.

[0034] Preferably, the width of the header tank is greater than the width of the water inlet.

[0035] Preferably, the pipe orifice of the drip irrigation water supply pipe is on the side far from the water inlet.

[0036] Compared with the prior art, the beneficial effects of adopting the above further technical solution are as follows:

[0037] First of all, the completely covered design effectively prevents sundries such as rats, insects, and fallen leaves in the wild environment from entering the tank, avoiding the pollution of the water quality or damage to the filtration system caused by these foreign substances. Secondly, the structure of the vertical plate and side plates provides a stable support for the secondary filtration component, ensuring the stable operation of the filtration system, and at the same time facilitating the disassembly and cleaning and maintenance of the filtration component. In addition, the position design of the water discharge hole enables the water discharged from the pumping pipeline to flow into the tank orderly, reducing the disturbance of the water flow to the water quality in the tank and further protecting the filtration effect. Description of the Drawings

[0038] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a front view structural schematic diagram of a preferred embodiment of the river water source drip irrigation head device of the present utility model.

[0040] Figure 2 is Figure 1 a right view structural schematic diagram of...

[0041] Figure 3 is Figure 1 a left view structural schematic diagram of...

[0042] Figure 4 is Figure 1 a top view structural schematic diagram of...

[0043] Figure 5 is Figure 1 a three-dimensional structural schematic diagram of...

[0044] The marks in the figure are respectively:

[0045] 100 primary filtration component,

[0046] 110 hemispherical bottom net,

[0047] 120 cylindrical side net,

[0048] 130 buoyancy ring,

[0049] 200 pumping pipeline,

[0050] 300 head water tank,

[0051] 310 secondary filtration component,

[0052] 320 drip irrigation water supply pipe,

[0053] 330 sewage outlet,

[0054] 340 vertical plate,

[0055] 341 water discharge hole,

[0056] 350 side plate. Specific embodiments

[0057] The following will be described in conjunction with the accompanying drawings and a specific embodiment.

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0060] See Figures 1 to 5 . The construction and operation of a river water source drip irrigation head device described in this embodiment are as follows:

[0061] The primary filtration assembly 100 is directly arranged on a broad river surface through an anchoring system or by using ropes, and is stably floated by a buoyancy device (such as a floating barrel). The aperture of the filter screen of the primary filtration assembly 100 is designed to be 80 - 100 meshes, such as 80, 90, 100 meshes, preferably 100 meshes, effectively intercepting large particle sediment, dead branches and leaves and other impurities in the river water, and providing pretreatment for subsequent secondary filtration.

[0062] The head water tank 300 has a secondary filtration assembly 310 installed above its water inlet; the aperture of the filter screen of the secondary filtration assembly 310 is 120 - 150 meshes. The head water tank 300 is designed with a sufficient volume to store the river water that has passed through two - stage filtration, ensuring a stable water source supply for the drip irrigation system. The specific container depends on the size of the drip irrigation area and the water demand of the plants. The aperture of the filter screen of the secondary filtration assembly 310 is 120 - 150 meshes, further filtering out smaller particulate matters and ensuring that the water quality entering the water tank is clearer.

[0063] The pumping pipeline 200 has its water inlet end located behind the primary filtration assembly 100 and its water outlet end located in front of the secondary filtration assembly 310. The water inlet end of the pumping pipeline 200 is inserted into the central position of the primary filtration assembly 100 to ensure that the pumped water has been preliminarily filtered. The pipeline is made of wear - resistant materials to adapt to the harsh field environmental conditions. The water outlet end is connected to the water inlet of the head water tank 300 and is located in front of the secondary filtration assembly 310, so that the river water is first filtered by the secondary filtration before entering the water tank. The pumping pipeline 200 implicitly represents that there is a pumping water pump, and the water pump can be any known product in the prior art suitable for pumping river water from the river.

[0064] When the river water passes through the primary filtration component 100, impurities with larger particles are intercepted, and the water after primary filtration is pumped to the header tank 300 through the pumping pipeline 200. Before the water flow enters the header tank 300, it passes through the secondary filtration component 310 for further fine filtration to ensure that the water quality meets the requirements of the drip irrigation system. The filtered river water is transported from the outlet of the header tank 300 to the drip irrigation system to provide clean and impurity-free irrigation water for the farmland.

[0065] The terms "front" and "rear" are relative to the water flow path. The entire pipeline of the pumping pipeline 200 is only responsible for the transportation of the river water after primary filtration, and no other filtration devices are installed on the pipeline to avoid increasing the water flow resistance and thus increasing the load on the water pump.

[0066] A filtration effect monitoring device, such as a pressure sensor or a turbidimeter, can be further installed in the header tank 300 to monitor the filtration effect in real time and remind the maintenance personnel to clean or replace the filter screen when necessary.

[0067] According to a further embodiment of the river water source drip irrigation header device of the present invention, the filter screen of the primary filtration component 100 is provided as a hemispherical bottom net 100 and a cylindrical side net 120, and a buoyancy ring 130 is fixedly connected above the cylindrical side net 120. The primary filtration component 100 is provided with a hemispherical bottom net 100 and a cylindrical side net 120. This structural design aims to maximize the filtration area while considering the water inlet uniformity, maintaining the stability of the component and the characteristics of easy maintenance.

[0068] The hemispherical bottom net 100 is made of a rigid metal wire mesh or plastic wire mesh material, and appropriate durable and corrosion-resistant materials are selected according to actual needs. The mesh aperture is set in the range of 80-100 meshes, preferably 100 meshes, to intercept large particle impurities in the river water, such as sand and larger organic substances.

[0069] The cylindrical side net 120 surrounds the hemispherical bottom net 100 to form a complete cylindrical filtration structure. The mesh aperture of the cylindrical side net 120 is also 80-100 meshes, preferably 100 meshes, and is the same as or similar to the material of the bottom net to maintain a consistent filtration effect. The design of the cylindrical side net 120 increases the filtration surface area, enabling more river water to pass through the filter screen and improving the filtration efficiency.

[0070] One or more buoyancy rings 130 are fixedly connected above the cylindrical side net 120. The buoyancy ring is usually made of foam plastic or other lightweight materials or a hollow annular tube, and has good buoyancy characteristics to ensure that the entire primary filtration component 100 can float stably on the river surface.

[0071] The buoyancy ring 130 not only provides buoyancy but also helps to fix the shape of the cylindrical side net 120, preventing it from deforming due to the impact of water flow.

[0072] Place the primary filtration component 100 at an appropriate position in the river, usually choosing an area with relatively stable water flow and moderate water depth to ensure the filtration effect and the stability of the component.

[0073] Connect it to the riverbank through an anchoring system or using ropes to ensure that the primary filtration component 100 will not move due to water flow or wind and waves.

[0074] Regularly inspect the primary filtration component 100, especially the hemispherical bottom net 100 and the cylindrical side net 120, to ensure that there are no damages or excessive blockages.

[0075] When cleaning, the primary filtration component 100 can be taken out of the water surface to remove impurities on the net or replace the filter net as needed.

[0076] According to a further embodiment of the river water source drip irrigation head device of the present utility model, the height of the primary filtration component 100 is not less than 1.5 m; the diameter of the cylindrical side net 120 is not less than 1 m. Such a height design helps to ensure good filtration effects under different water level conditions and can accommodate sufficient water volume for effective filtration. The setting of the diameter ensures the filtration area, improves the filtration efficiency, and at the same time ensures the uniform distribution of water flow when passing through.

[0077] The primary filtration component 100 is installed at a position at least 2 meters away from the riverbank. This distance can ensure that the primary filtration component 100 is not affected by possible interferences near the riverbank, such as waves, sediment accumulation, or human activities.

[0078] The end of the water intake end of the pumping pipeline 200 is located on the axis of the cylindrical side net 120. The pumping pipeline 200 is connected to the buoyancy ring 130 through appropriate fixing devices (such as a cover plate with mounting holes) to ensure the stability of the pipeline and prevent it from moving due to water flow or wind force. The end of the water intake end of the pumping pipeline 200 is accurately positioned on the axis of the cylindrical side net 120. This design ensures that the pumping pipeline can efficiently absorb water from the filtered water and reduces the disturbance of water flow to the filtration component.

[0079] According to a further embodiment of the river water source drip irrigation head device of the present utility model, the secondary filtration component 310 is designed with a rectangular stainless steel mesh plate. This material not only has good corrosion resistance, but is also easy to clean and maintain. The mesh aperture of the stainless steel mesh plate is 120 - 150 meshes, such as 120 meshes, 130 meshes, 140 meshes or 150 meshes, which can effectively intercept smaller particulate impurities and ensure that the filtered water quality meets the requirements of the drip irrigation system. The width and length of the rectangular stainless steel mesh plate are designed according to the dispersion width and the maximum extension path when the river water is filtered. The width design should ensure that it can cover the entire cross-section of the water inlet, while the length should be sufficient to allow the river water to have enough time for filtration when flowing through the filter plate. The inclination angle of the secondary filtration component 310 is designed between 30° and 50°. This inclined design helps to utilize gravity to promote the automatic sliding down of the impurities intercepted during the filtration process, avoid blockage, and is also convenient for cleaning and maintenance.

[0080] According to a further embodiment of the river water source drip irrigation head device of the present utility model, the head tank 300 is designed as a container large enough to hold the filtered river water, usually made of brick-concrete structure, plastic, stainless steel or anti-corrosion treated metal materials to ensure the structural stability and water quality safety. The head tank 300 is provided with a drip irrigation water supply pipe 320. The drip irrigation water supply pipe 320 is a pipe connecting the head tank 300 and the drip irrigation system, and its material needs to have the characteristics of water pressure resistance, impact resistance and corrosion resistance to ensure long-term stable water supply. The pipe orifice of the drip irrigation water supply pipe 320 is more than 40 cm away from the bottom of the head tank 300. The purpose of this is to create a sedimentation area for the filtered river water in the tank. In this area, heavier impurities can settle to the bottom of the tank before the water flows into the water supply pipe, thereby further improving the cleanliness of the water supply.

[0081] According to a further embodiment of the river water source drip irrigation head device of the present utility model, a sewage outlet 330 is provided at the lower part or bottom of the head water tank 300. The sewage outlet 330 is equipped with a sealing cover or valve to prevent untreated water from flowing out of the water tank and also prevent foreign objects from entering the water tank. This port can be designed as a threaded interface for easy installation and disassembly, or designed with a quick opening / closing mechanism with a handle. Open the sewage outlet 330 regularly to let the impurities deposited at the bottom of the water tank flow out with the water flow, keeping the inside of the water tank clean. In some embodiments, an automated control system can also be considered, which monitors the water quality and water level in the water tank through sensors and automatically opens the sewage outlet 330 for sewage discharge. The sewage discharge operation can be carried out during the cleaning of the water tank or regularly during the maintenance of the water tank. When cleaning the water tank, the sewage outlet 330 can be opened first to drain the water in the water tank, and then the inside of the water tank can be thoroughly cleaned. The head water tank 300 can also be designed to ensure that the water flow forms a swirl or circular flow after entering the water tank, helping the impurities to precipitate to the bottom for easy discharge through the sewage outlet 330. To facilitate the collection and discharge of impurities, the bottom of the water tank can be designed to be inclined, making it easier for the impurities to concentrate towards the sewage outlet 330.

[0082] According to a further embodiment of the river water source drip irrigation head device of the present utility model, a vertical plate 340 and side plates 350 are provided above the water inlet of the head water tank 300. The vertical plate 340 is vertically installed above the water inlet of the head water tank 300 and serves as a support structure and connection component to ensure the stability of the entire filtration and water supply system. A water discharge hole 341 is provided at the top of the vertical plate 340, which is the key interface connecting the outlet end of the pumping pipeline 200. The size and shape of the water discharge hole 341 are designed to match the outlet end of the pumping pipeline 200 to ensure smooth water flow and no leakage.

[0083] The outlet end of the pumping pipeline 200 is closely connected to the water discharge hole 341 to ensure that the river water filtered by the primary filtration component 100 can flow smoothly onto the secondary filtration component 310.

[0084] There are two side plates 350, which are respectively arranged on both sides of the vertical plate 340 to form the structural support at the top of the water tank. The design of the side plates 350 should ensure sufficient strength and stability to support the secondary filtration component 310. The secondary filtration component 310 adopts a detachable design for easy installation and maintenance. This component is fixed by the side plates 350 to ensure its stability during the filtration process. The secondary filtration component 310, the vertical plate 340, and the side plates 350 completely cover the water inlet, preventing external pollution such as fallen leaves, dust, or small animals from entering the water tank and ensuring the cleanliness of the water quality.

[0085] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0086] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0087] In the present utility model, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0088] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0089] The above are only the preferred embodiments of the present utility model. It should be noted that the above preferred embodiments should not be regarded as a limitation to the present utility model. The protection scope of the present utility model should be subject to the scope defined by the claims. For those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A river water source drip irrigation head device, characterized in that, Including: A primary filtration component, which is set on the river surface, and the aperture of the filter screen is 80 - 100 meshes; A head water tank, above the water inlet of which a secondary filtration component is installed; the aperture of the filter screen of the secondary filtration component is 120 - 150 meshes; A pumping pipeline, the water inlet end of which is located behind the primary filtration component and the water outlet end of which is located in front of the secondary filtration component.

2. The river water source drip irrigation head device according to claim 1, characterized in that, The filter screen of the primary filtration component is set as a hemispherical bottom net and a cylindrical side net, and a buoyancy ring is fixedly connected above the cylindrical side net.

3. The river water source drip irrigation head device according to claim 2, characterized in that The height of the primary filtration component is not less than 1.5 m; the diameter of the cylindrical side net is not less than 1 m.

4. The river water source drip irrigation head device according to claim 2, characterized in that, The distance between the primary filtration component and the river bank is at least 2 m.

5. The river water source drip irrigation head device according to claim 2, characterized in that, The end of the water inlet of the pumping pipeline is located on the axis of the cylindrical side net.

6. The river water source drip irrigation head device according to claim 1, characterized in that The secondary filtration component is inclined, and the inclination angle is 30 - 50°.

7. The river water source drip irrigation head device according to claim 1 or 6, characterized in that, The secondary filtration component is a rectangular stainless steel mesh plate, and its width and length are respectively designed to adapt to the dispersion width and the maximum extension path during river water filtration.

8. The river water source drip irrigation head device according to claim 1, characterized in that, The head water tank is provided with a drip irrigation water supply pipe, and the pipe orifice of the drip irrigation water supply pipe is more than 40 cm away from the bottom of the head water tank.

9. The river water source drip irrigation head device according to claim 1, characterized in that, A sewage outlet is arranged at the lower part or the bottom of the head water tank.

10. The river water source drip irrigation head device according to claim 1, characterized in that, A vertical plate and side plates are arranged above the water inlet of the head water tank, a water discharge hole is arranged at the top of the vertical plate, and the water outlet end of the pumping pipeline is connected to the water discharge hole; there are two side plates, which are respectively arranged on both sides of the vertical plate and are used to support the detachably installed secondary filtration component; the secondary filtration component, the vertical plate and the side plates completely cover the water inlet.

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