Agricultural recycled water irrigation equipment and method

Abstract

The present invention relates to the technical field of agricultural irrigation, and discloses a recycled water irrigation device and method for agriculture, wherein the irrigation device comprises a water storage tank, a water collecting pipe fixed on the top of the water storage tank, a water delivery pipe, a shielding component, an elastic support member and a buoyancy support member, wherein the water delivery pipe is arranged on one side of the water collecting pipe, and the two ends of the water delivery pipe are respectively connected with the water collecting pipe and the water storage tank, the shielding component comprises an annular shielding plate and a closing plate fixed at the port of the annular shielding plate, the annular shielding plate is slidably connected in the water collecting pipe, the elastic support member is arranged between the top of the water storage tank and the closing plate, and the buoyancy support member comprises a floating body, a lifting part and a connecting rod; the present invention realizes an automatic sealing process of rainwater stored in the water storage tank through the shielding component and the elastic support member, so as to avoid pollution and evaporation caused by exposure of the stored rainwater, and the buoyancy of the provided buoyancy support member is used to prop up the shielding component after being filled with water, so as to avoid continuous pressure of rainwater on the elastic support member, which causes damage and failure of the elastic support member.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural irrigation, and in particular to agricultural recycled water irrigation equipment and method. Background Art

[0002] Irrigation equipment usually consists of three basic systems: water supply, water pumping and water spraying. There are many different water supply systems. Depending on the geographical location, rivers can be used directly as water sources, reservoirs or channels can be artificially built for diversion irrigation, or water storage structures can be built for water storage irrigation.

[0003] As a kind of recycled water, rainwater can be used as a water supply for agricultural irrigation. Rainwater can be collected by building small water storage structures, such as water cellars or reservoirs. In dry weather, the stored water can be pumped out to irrigate farmland. Therefore, rainwater storage irrigation can not only make more rational use of water resources, but also save water.

[0004] Since the currently constructed water storage structures need to collect rainwater in the open air, the water collection ports of the water storage structures are in an open state, which makes it easy for debris to fall into the water storage structures and cause water pollution. At the same time, when encountering hot and dry weather, the rainwater stored in the reservoir will evaporate, resulting in a part of the water source being wasted. To solve the above problems, the water collection ports need to be closed. Currently, there are usually two methods. One is to manually install a cover on the water collection port, open the cover when it rains, and close the cover at other times. However, manual work is not timely. The other is to set up some automatic sealing structures to replace manual automatic sealing. These automatic sealing structures are usually composed of elastic components and sealing plates, and the sealing plate is controlled to close the water collection port by the gravity of rainwater and the elastic force of the elastic components. However, the above-mentioned automatic sealing method uses the gravity of rainwater to press down the elastic component before opening the water collection port. Therefore, the elastic component will continue to be under pressure. Even if the water storage structure is filled with rainwater, the rainwater that continues to fall from the outside will still impact the sealing plate to compress the elastic component. Therefore, the elastic component is constantly impacted by rainwater during the entire rainfall process. After long-term use, fatigue damage will occur to the elastic component, thereby reducing its original elasticity, resulting in the sealing plate being unable to return to its initial height for sealing.

[0005] For example, the patent with publication number CN221062012U discloses a water-saving irrigation drip irrigation water storage device for water conservancy projects. In order to avoid the large contact area between water and air in the box, which is easy to cause evaporation waste, the gravity of water and the elastic force of the spring are coordinated to realize the automatic closing and opening process of the rebound sealing plate, and it is achieved with the help of the spring. Therefore, on rainy days, rainwater will continuously impact the rebound sealing plate and continuously compress the spring, which will cause the spring to fail over time, making it difficult to realize the rebound sealing process and the stability of the seal cannot be guaranteed. Summary of the invention

[0006] The purpose of the present invention is to provide an agricultural recycled water irrigation device and method to solve the problem that when an elastic automatic sealing structure is used to close the water collection port in current agricultural water storage irrigation, spring failure occurs, the rebound sealing process is difficult to achieve, and the sealing stability cannot be guaranteed.

[0007] The technical solution of the present invention is:

[0008] A recycled water irrigation device for agriculture, comprising a water storage tank and a water collecting pipe fixed to the top of the water storage tank, a water delivery pipe, a shielding assembly, an elastic support member and a buoyancy support member, wherein the water delivery pipe is arranged on one side of the water collecting pipe, one end of the water delivery pipe is connected to the water collecting pipe, and the other end of the water delivery pipe extends into the water storage tank, the shielding assembly comprises an annular shielding plate and a closing plate fixed at the upper end port of the annular shielding plate, the annular shielding plate is slidably connected in the water collecting pipe, and the elastic support member is vertically connected between the top of the water storage tank and the closing plate, and is used to support the closing plate on non-rainy days so that the annular shielding plate The baffle plate closes the pipe mouth of the water pipe. When collecting water on rainy days, it is compressed by the closing plate due to the gravity of rainwater, so that the annular baffle plate opens the pipe mouth of the water pipe. The buoyancy support assembly includes a float, a lifting part and a connecting rod. The float is arranged in the water storage tank, and the lifting part is arranged in the water collecting pipe and is located below the shielding assembly. One end of the connecting rod is connected to the float, and the other end of the connecting rod is connected to the lifting part after passing through the water storage tank. The buoyancy support assembly is used for the float to float upward by utilizing the buoyancy and to drive the lifting part to lift the annular baffle plate through the connecting rod after the water storage tank is full of rainwater, so that the annular baffle plate closes the pipe mouth of the water pipe.

[0009] Preferably, as a further improvement of the present invention, the plurality of elastic support members are located on the inner side of the annular top plate, and one end of the connecting rod away from the floating body is fixed to the bottom of the annular top plate.

[0010] Preferably, as a further improvement of the present invention, the elastic support member includes a plurality of springs evenly distributed on the inner side of the annular baffle plate, one end of each spring is connected to the top of the water storage tank, and the other end of each spring is connected to the closing plate.

[0011] Preferably, as a further improvement of the present invention, the float is a float plate or a float ball.

[0012] Preferably, as a further improvement of the present invention, there are multiple water pipes, which are circumferentially arranged around the water collecting pipe, one end of each water pipe is connected to the water collecting pipe, and the other end of each water pipe extends into the water storage tank.

[0013] Preferably, as a further improvement of the present invention, a conical collecting bucket is fixed on the top of the water collecting pipe, and a first filter mesh plate is fixed to the conical collecting bucket, and a second filter mesh plate is fixed at the pipe mouth of each water supply pipe facing the water collecting pipe, and the diameter of the filter holes opened on the second filter mesh plate is smaller than the diameter of the filter holes opened on the first filter mesh plate.

[0014] Preferably, as a further improvement of the present invention, a screw is provided in the water collecting pipe, one end of the screw is fixed to the top of the water storage tank, the other end of the screw passes through the closing plate and extends to the top of the closing plate, the closing plate and the screw are threadedly connected, an annular cleaning brush is provided on the outer ring surface of the annular baffle plate, and the brush head of the annular cleaning brush is in contact with the second filter screen plate, a support plate is provided inside the annular baffle plate, the circumferential side wall of the support plate is rotatably connected to the inner ring surface of the annular baffle plate through a bearing, the lower end face of the support plate is connected to the end of the spring away from the water storage tank, and a through hole for the screw to pass through is opened on the support plate.

[0015] Preferably, as a further improvement of the present invention, a limit assembly is provided between the support plate and the water tank, the limit assembly is used to limit the rotation of the support plate, the limit assembly includes a rectangular outer tube and a rectangular inner tube, the rectangular outer tube is sleeved on the outside of the lead screw, one end of the rectangular outer tube is fixed to the top of the water tank, the rectangular inner tube is sleeved on the outside of the lead screw, one end of the rectangular inner tube is slidably connected to the inner side of the rectangular outer tube, and the other end of the rectangular inner tube is fixed to the bottom of the support plate.

[0016] Preferably, as a further improvement of the present invention, at least two hemispherical grooves are provided at the bottom of the annular baffle plate, each of which is provided with a ball, an annular support plate is fixed on the outer wall of the groove of each hemispherical groove, and the inner ring surface of the annular support plate is provided with an arc surface matching the surface of the ball.

[0017] The present invention also discloses an irrigation method, which collects rainwater to irrigate crops. The rainwater is collected by using the above agricultural recycled water irrigation equipment. The method for collecting rainwater includes the following steps:

[0018] On rainy days, the water collecting pipe is used to collect rainwater. When the gravity of the rainwater is greater than the elastic supporting force of the elastic supporting member, the closing plate is pressed down so that the annular shielding plate opens the pipe opening of the water delivery pipe, and the rainwater enters the water storage tank through the water delivery pipe for storage;

[0019] When the water storage tank is full of rainwater, the floating body floats upward, and the lifting part is driven by the connecting rod to lift up the annular shielding plate, so that the annular shielding plate closes the pipe opening of the water delivery pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the cooperation of the shielding component, the elastic support component and the buoyancy support component, the process of automatically closing the water pipe mouth is realized, which can prevent external debris from falling in and causing pollution in non-rainy weather conditions, and can also reduce the problem of evaporation loss of water stored in the water storage tank.

[0022] 2. After the water storage tank is filled with rainwater, the buoyancy support component can use buoyancy to replace the elastic support member to support the shielding component to automatically close the water pipe outlet, thereby preventing the continuously falling rain from constantly exerting pressure on the elastic support member, which may cause damage to the elastic support member and make it difficult to drive the shielding component to reset, resulting in a poor seal.

[0023] 3. The elastic support member can use its own elastic force to replace the buoyancy support component to support the shielding component when the water storage tank is not full of rainwater after pumping irrigation. Therefore, it can ensure that when the water storage tank is not full of water, the water pipe can be closed to reduce evaporation loss of stored rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the front cross-sectional structure of an agricultural recycled water irrigation device when no water is stored according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the front cross-sectional structure of an agricultural recycled water irrigation device when it is full of water according to an embodiment of the present invention.

[0026] Figure 3 This is an enlarged schematic diagram of various structures arranged in a water collecting pipe in an agricultural recycled water irrigation device according to an embodiment of the present invention.

[0027] Figure 4 It is an enlarged schematic diagram of an agricultural recycled water irrigation equipment water collecting pipe with a cleaning component added thereto in an embodiment of the present invention.

[0028] Figure 5 For the present invention Figure 4 A local enlarged schematic diagram of point A in the figure.

[0029] Figure 6 For the present invention Figure 4 A local enlarged schematic diagram of point B in the figure.

[0030] Figure 7 This is a schematic diagram of the front and cross-sectional structure of an agricultural recycled water irrigation device with an additional processing component according to an embodiment of the present invention.

[0031] Figure 8 For the present invention Figure 7 A local enlarged schematic diagram of point C in the figure. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 To the attached Figure 8 , the specific implementation methods of the present invention are described in detail. In the description of the invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the invention, unless otherwise specified, "plurality" means two or more.

[0034] Example

[0035] like Figures 1 to 3 As shown, an embodiment of the present invention provides an agricultural recycled water irrigation device, including a water storage tank 1 and a water collecting pipe 2 fixed to the top of the water storage tank 1. The water storage tank 1 can be pre-buried underground or directly placed on the ground, and the selection is made according to the use environment. Rainwater is collected on rainy days through the water collecting pipe 2. A water pipe 3 is connected to the circumferential side wall of the water collecting pipe 2, and the other end of the water pipe 3 extends into the water storage tank 1. The rainwater collected in the water collecting pipe 2 can be introduced into the water storage tank 1 through the water pipe 3 for storage.

[0036] Among them, a shielding component 4 and an elastic support member 5 are provided in the water collecting pipe 2. Specifically, the shielding component 4 includes an annular shielding plate 41 and a closing plate 42 fixed at the upper end port of the annular shielding plate 41. The annular shielding plate 41 is slidably connected in the water collecting pipe 2. Through the barrel-shaped shielding component 4 composed of the annular shielding plate 41 and the closing plate 42, the closing and opening functions of the pipe mouth of the water supply pipe 3 can be realized in the water collecting pipe 2. The elastic support member 5 is vertically connected between the top of the water storage tank 1 and the closing plate 42. The elastic support member 5 can use the gravity of rainwater to automatically control the shielding and opening process of the shielding component 4.

[0037] On non-rainy days, the elastic support member 5 can support the closing plate 42 in the initial state, and make the annular shielding plate 41 higher than the height of the mouth of the water pipe 3, thereby closing the water pipe 3 and preventing the rainwater stored in the water storage tank 1 from evaporating due to drought. On rainy days, the falling rainwater will continuously fall into the water collecting pipe 2. Initially, since the gravity of the rainwater accumulated above the closing plate 42 is less than the elastic supporting force of the elastic support member 5 itself, the mouth of the water pipe 3 will still be closed. As the gravity of the rainwater increases, when it is greater than the elastic supporting force of the elastic support member 5 itself, the closing plate 42 will be pressed down and the elastic support member 5 will be compressed. At this time, the annular shielding plate 41 will drop and expose the mouth of the water pipe 3, and the rainwater will flow into the water storage tank 1 through the water pipe 3 for storage.

[0038] Among them, a buoyancy support assembly is arranged between the water storage tank 1 and the water collecting pipe 2. Specifically, the buoyancy support assembly includes a float 61, a lifting portion 62 and a connecting rod 63. The float 61 is arranged in the water storage tank 1. The float 61 can optionally have a structure such as a floating plate or a floating ball. The lifting portion 62 is arranged in the water collecting pipe 2 and is located below the shielding assembly 4. One end of the connecting rod 63 is connected to the float 61, and the other end of the connecting rod 63 passes through the water storage tank 1 and is connected to the lifting portion 62. When rainwater is discharged into the water storage tank 1, the float 61 will float on the surface of the rainwater and move upward synchronously according to the increase in the height of the stored rainwater. During the upward floating movement of the float 61, the lifting portion 62 is driven by the connecting rod 63 to lift the shielding assembly 4. At this time, the buoyancy is greater than the self-gravity of the shielding assembly 4 and the weight of the rainwater stored on the shielding assembly 4, so it will drive the annular shielding plate 41 to move upward. Figure 2When the rainwater collected in the water storage tank 1 is almost full, the float 61 rises to the highest point, and the annular baffle plate 41 is lifted up by the connecting rod 63 and the lifting part 62 to close the pipe mouth of the water supply pipe 3. At this time, the connecting rod 63 uses buoyancy to replace the elastic support member 5 to support the annular baffle plate 41, thereby preventing the continuously falling rainwater from constantly exerting pressure on the elastic support member 5, so that the elastic support member 5 is always in a compressed state, thereby avoiding the problem of failure and damage of the elastic support member 5 and difficulty in resetting, resulting in poor sealing. When the rain stops, since no more rainwater enters the water collecting pipe 2, after water is pumped from the water storage tank 1 for irrigation, when the rainwater stored in the water storage tank 1 is not full, the buoyancy support component no longer supports the annular baffle plate 41, and the elastic support member 5 replaces the buoyancy support component to support the annular baffle plate 41 again. Therefore, it can be ensured that when the water storage tank 1 is not full of water, the water supply pipe 3 can also be closed, reducing the loss of rainwater stored in the water storage tank 1 due to evaporation caused by drought.

[0039] Further, such as Figure 3 As shown, the lifting portion 62 is an annular top plate, which is arranged below the annular baffle plate 41. A plurality of elastic support members are located on the inner side of the annular top plate. One end of the connecting rod 63 away from the float 61 is fixed to the bottom of the annular top plate. The annular top plate can contact and lift the bottom of the annular baffle plate 41 under the action of the float 61, and the contact surface is uniform.

[0040] Among them, Figure 3 As shown, the elastic support member 5 includes a plurality of springs evenly distributed on the inner side of the annular shielding plate 41, one end of each spring is connected to the top of the water storage tank 1, and the other end of each spring is connected to the closing plate 42. The number of springs is selected and adapted according to the weight of the supporting shielding assembly 4 and the set rainwater storage weight to ensure that the closing plate 42 is supported to be higher than the pipe mouth height of the water pipe 3 in the initial state.

[0041] Among them, the float 61 can be selected as a floating plate or a floating ball, and the selection can be made according to the usage. If the internal volume of the water storage tank 1 is small, the floating ball is selected as the floating body 61 to support the lifting part 62. If the internal volume of the water storage tank 1 is large, the floating plate is preferably used as the floating body 61 to support the lifting part 62, and the buoyancy of the floating plate is greater than that of the floating ball, which can provide more stable support.

[0042] Further, such as Figure 1 and Figure 2As shown, in order to improve the water storage efficiency and reduce the impact on the water storage tank 1, a plurality of water pipes 3 are provided and are circumferentially arranged around the water collecting pipe 2. One end of each water pipe 3 is connected to the water collecting pipe 2, and the other end of each water pipe 3 extends into the water storage tank 1. The pipe body of each water pipe 3 located in the water storage tank 1 is an inclined section, and the port of the inclined section is arranged toward the inner wall of the water storage tank 1. The rainwater entering through the water collecting pipe can be dispersed and transported to the water storage tank 1 through the arranged multiple water pipes, and the force of rainwater impacting the bottom of the water storage tank 1 can be reduced while increasing the water collection speed, and the rainwater falling into the water storage tank 1 can be gathered from the surroundings of the float 61, and will not directly impact the float 61, thereby avoiding the problem of damage to the float 61 caused by the impact on the float 61, and the rainwater falling around can make it more convenient for the float 61 to float.

[0043] In another embodiment of the present invention, Figures 4 to 6 As shown, in order to filter rainwater mixed with debris during water collection, a conical collecting hopper 7 is fixed on the top of the water collecting pipe 2. The conical collecting hopper 7 increases the water collecting area of ​​the pipe mouth of the water collecting pipe 2, so that more rainwater can enter the water collecting pipe 2. The conical collecting hopper 7 is fixed with a first filter screen 71. A second filter screen 72 is fixed at the pipe mouth of each water supply pipe 3 facing the water collecting pipe 2. The diameter of the filter holes opened on the second filter screen 72 is smaller than the diameter of the filter holes opened on the first filter screen 71. The first filter screen 71 can filter larger debris such as leaves and stones to prevent them from entering the water collecting pipe 2 and affecting the shielding component 4. The second filter screen 72 can filter smaller impurities contained in the rainwater, thereby improving the water quality of the collected rainwater.

[0044] Furthermore, considering that when impurities in the water are filtered through the second filter screen 72, with long-term use, some of the filter holes on the second filter screen 72 will be blocked by the accumulation of fine impurities, thereby affecting the efficiency of collecting rainwater, a cleaning component is provided between the shielding component 4 and the second filter screen 72 provided on the water pipe 3, and the cleaning component is used to clean the filter holes blocked by the second filter screen 72. The cleaning component includes a screw 81, an annular cleaning brush 82 and a support plate 83. The screw 81 is provided in the water collecting pipe 2 and coincides with the central axis of the water collecting pipe 2. One end of the screw 81 is fixed to the top of the water storage tank 1, and the other end of the screw 81 is fixed to the top of the water storage tank 1. One end passes through the closing plate 42 and extends to the top of the closing plate 42. The closing plate 42 is threadedly connected to the lead screw 81. The annular cleaning brush 82 is set and fixed in the annular mounting groove provided on the outer ring surface of the annular baffle plate 41. The brush head of the annular cleaning brush 82 contacts the second filter screen 72. The support plate 83 is sleeved inside the annular baffle plate 41. The circumferential side wall of the support plate 83 is rotatably connected to the inner ring surface of the annular baffle plate 41 through a bearing. The bearing uses a deep groove ball bearing or other bearing with longitudinal supporting force. The lower end surface of the support plate 83 is connected to the end of the spring away from the water storage tank 1. The support plate 83 is provided with a through hole for the lead screw 81 to pass through.

[0045] Among them, the working principle of the cleaning component is as follows:

[0046] Since the lower end of the support plate 83 is connected to the spring, the spring provides support force to the support plate 83.

[0047] Since the support plate 83 is rotatably connected to the inner ring surface of the annular baffle plate 41 through the bearing, the support plate 83 transmits the supporting force to the annular baffle plate 41 through the bearing, so that the annular baffle plate 41 maintains a certain height and closes the pipe openings of multiple water pipes 3. When collecting water on rainy days, as rainwater pours in, the rainwater accumulated on the closing plate 42 will press the closing plate 42 downward. Since the closing plate 42 is threadedly connected to the lead screw 81 and the lead screw 81 is in a fixed state, the closing plate 42 will rotate and move downward when pressed by rainwater, thereby driving the annular cleaning brush 82 to rotate and move downward, and the second filter screen 72 is cleaned by the annular cleaning brush 82. During the first cleaning process, when the water storage tank 1 is filled with rainwater, the float 61, under the action of buoyancy, drives the lifting part 62 through the connecting rod 63 to lift the shielding assembly 4, so that the annular shielding plate 41 and the closing plate 42 move upward, and with the cooperation of the closing plate 42 and the lead screw 81, they finally achieve upward movement while rotating, thereby driving the annular cleaning brush 82 to rotate and move upward synchronously, and the annular cleaning brush 82 is used to realize the second cleaning process of the second filter screen 72. That is to say, in the process of collecting water on a rainy day, the annular cleaning brush 82 will realize two automatic cleanings of the second filter screen 72, thereby effectively avoiding blockage of the second filter screen 72.

[0048] Furthermore, considering that when the support plate 83 is supported by the spring, the spring is not a rigid support, when the annular baffle plate 41 rotates, it is still possible to drive the support plate 83 to rotate itself, resulting in a spring winding problem. Therefore, a limit assembly is provided between the support plate 83 and the water storage tank 1, and the limit assembly is used to limit the rotation of the support plate 83. The limit assembly includes a rectangular outer tube 84 and a rectangular inner tube 85. The rectangular outer tube 84 is sleeved on the outside of the lead screw 81, and one end of the rectangular outer tube 84 is fixed to the top of the water storage tank 1, and the rectangular inner tube 85 is sleeved. On the outside of the lead screw 81, one end of the rectangular inner tube 85 is slidably connected to the inner side of the rectangular outer tube 84, and the other end of the rectangular inner tube 85 is fixed to the bottom of the support plate 83. By sliding the rectangular inner tube 85 and the rectangular outer tube 84 against each other, the support plate 83 can be limited to avoid the rotation of the support plate 83 itself, which may cause the spring to wind up. At the same time, since the rectangular inner tube 85 can slide in the rectangular outer tube 84, when the height of the support plate 83 changes, it can change synchronously with it, thereby always maintaining the rotation limit function.

[0049] Further, such as Figure 6 As shown, in order to prevent the annular baffle plate 41 from being worn out between the lifting portion 62 and the annular baffle plate 41 when the annular baffle plate 41 is lifted up by the lifting portion 62, because the annular baffle plate 41 will rotate along with the closing plate 42, and affect the rotation and cleaning process of the annular baffle plate 41, at least two hemispherical grooves 43 are provided at the bottom of the annular baffle plate 41, each hemispherical groove 43 is provided with a ball 44, and an annular support plate 45 is fixed on the outer wall of the groove of each hemispherical groove 43, and an arc surface matching the surface of the ball 44 is provided on the inner ring surface of the annular support plate 45, and point-to-surface contact support can be achieved through the provided ball 44, thereby reducing the friction process, and the ball 44 itself can rotate, to assist and enable the annular baffle plate 41 to rotate more flexibly.

[0050] In another embodiment of the present invention, considering that the collected rainwater may carry some pollutants, and during the long-term storage in the water storage tank 1, the stored rainwater may be polluted, which may have an adverse effect on crops during irrigation. Therefore, it is necessary to purify the rainwater stored in the water storage tank 1. A processing component is provided on the water storage tank 1, such as Figure 7 and Figure 8As shown, the treatment component includes a medicine storage box 91, in which treatment agents are contained. A medicine feeding tube 92 is provided on the medicine storage box 91 for filling supplementary agents. A medicine release tube 93 is provided at the bottom of the medicine storage box 91 for releasing treatment agents. The other end of the medicine release tube 93 extends into the water storage tank 1 and is connected to a solenoid valve 94 for controlling the dosage of the treatment agents. The connecting rod 63 is a multi-stage telescopic rod, which is composed of a plurality of sleeves with diameters decreasing from top to bottom and are sleeved together. A pressure sensor 95 is provided at the end of each sleeve. The pressure sensor 95 and the solenoid valve 94 are both electrically connected to an external controller. By setting up pressure sensors 95 at different heights, the multi-stage telescopic rod can be driven to extend and retract during the floating movement of the float 61. The height of the stored rainwater is determined according to the float 61 touching the pressure sensors 95 at the ends of the casing at different heights, and the volume of the rainwater stored in the water tank 1 can be calculated in combination with the volume of the water tank 1. The solenoid valve 94 is controlled by the controller to release a corresponding dose of treatment agent according to the volume to purify the rainwater stored in the water tank 1, which can avoid the problem of poor purification effect caused by too much or too little agent when treating the rainwater stored in the water tank 1.

[0051] In another embodiment of the present invention, the present invention discloses an irrigation method, which collects rainwater to irrigate crops. The rainwater is collected using the above-mentioned agricultural recycled water irrigation equipment. The method for collecting rainwater includes the following steps:

[0052] On rainy days, rainwater is collected by the water collecting pipe 2. When the gravity of the rainwater is greater than the elastic supporting force of the elastic supporting member 5, the closing plate 42 is pressed down so that the annular shielding plate 41 opens the mouth of the water pipe 3, and the rainwater enters the water storage tank 1 through the water pipe 3 for storage.

[0053] When the water storage tank 1 is filled with rainwater, the float 61 floats upward, and the lifting portion 62 is driven by the connecting rod 63 to lift the annular shielding plate 41, so that the annular shielding plate 41 closes the pipe opening of the water delivery pipe 3.

[0054] like Figure 1 As shown, a pumping pipe 11 is inserted into the water storage tank 1, and the pumping pipe 11 is connected to an external water pump. When irrigation is performed, the rainwater stored in the water storage tank 1 is pumped out and irrigation is performed.

[0055] In summary, the present invention realizes the automatic sealing process of rainwater stored in the water tank through the shielding component and the elastic support member, so as to avoid the loss of stored rainwater due to evaporation caused by drought. The buoyancy support component can use the buoyancy to drive the floating body to float upward after the water tank is full of rainwater, and drive the lifting part to rise through the connecting rod to lift the annular shielding plate. Since the buoyancy is greater than the gravity of the shielding component itself and the weight of the rainwater stored on the shielding component, it will drive the annular shielding plate to move upward and close the water pipe mouth. After that, the connecting rod uses the buoyancy to replace the elastic support member to support the annular shielding plate, thereby avoiding the continuous falling rainwater from constantly exerting pressure on the elastic support member, so that the elastic support member is always in a compressed state, thereby avoiding the problem of failure, damage and difficulty in resetting of the elastic support member, resulting in poor sealing.

[0056] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An agricultural reclaimed water irrigation device, comprising a water storage tank (1) and a water collecting pipe (2) fixed to the top of the water storage tank (1), characterized in that: Also includes: A water delivery pipe (3) is arranged on one side of the water collecting pipe (2), one end of the water delivery pipe (3) is connected to the water collecting pipe (2), and the other end of the water delivery pipe (3) extends into the water storage tank (1); A shielding assembly (4) comprising an annular shielding plate (41) and a closing plate (42) fixed at an upper end port of the annular shielding plate (41), wherein the annular shielding plate (41) is slidably connected in the water collecting pipe (2); The elastic support member (5) is vertically connected between the top of the water storage tank (1) and the closing plate (42), and is used to support the closing plate (42) in non-rainy days, so that the annular shielding plate (41) closes the pipe opening of the water pipe (3); when collecting water in rainy days, the annular shielding plate (41) is compressed by the closing plate (42) due to the gravity of rainwater, so that the pipe opening of the water pipe (3) is opened; The buoyancy support assembly comprises: a float (61) arranged in the water storage tank (1); a lifting portion (62) arranged in the water collecting pipe (2) and located below the annular shielding plate (41); a connecting rod (63) having one end connected to the float (61) and the other end passing through the water storage tank (1) and connected to the lifting portion (62); after the water storage tank (1) is filled with rainwater, the float (61) floats upward by utilizing buoyancy and drives the lifting portion (62) to lift the annular shielding plate (41) through the connecting rod (63), so that the annular shielding plate (41) closes the pipe opening of the water delivery pipe (3); The lifting portion (62) is an annular top plate, which is arranged below the annular shielding plate (41), the plurality of elastic support members (5) are located on the inner side of the annular top plate, and one end of the connecting rod (63) away from the floating body (61) is fixed to the bottom of the annular top plate; The elastic support member (5) comprises a plurality of springs evenly distributed inside the annular shielding plate (41), one end of each spring being connected to the top of the water storage tank (1), and the other end of each spring being connected to the closing plate (42); There are a plurality of water delivery pipes (3), which are arranged around the circumference of the water collecting pipe (2); one end of each water delivery pipe (3) is connected to the water collecting pipe (2), and the other end of each water delivery pipe (3) extends into the water storage tank (1).

2. The agricultural recycled water irrigation equipment according to claim 1, characterized in that: The floating body (61) is a floating plate or a floating ball.

3. The agricultural recycled water irrigation equipment according to claim 1, characterized in that: A conical collecting hopper (7) is fixed on the top of the water collecting pipe (2), and a first filter screen (71) is fixed on the conical collecting hopper (7); a second filter screen (72) is fixed on the pipe opening of the water delivery pipe (3) directly facing the water collecting pipe (2); the diameter of the filter holes provided on the second filter screen (72) is smaller than the diameter of the filter holes provided on the first filter screen (71).

4. The agricultural recycled water irrigation equipment according to claim 3, characterized in that: A screw (81) is provided in the water collecting pipe (2), one end of the screw (81) is fixed to the top of the water storage tank (1), and the other end of the screw (81) extends to the top of the closing plate (42) after passing through the closing plate (42). The closing plate (42) and the screw (81) are threadedly connected. An annular cleaning brush (82) is provided on the outer ring surface of the annular baffle plate (41), and the brush head of the annular cleaning brush (82) contacts the second filter screen plate (72). A support plate (83) is sleeved inside the annular baffle plate (41), and the circumferential side wall of the support plate (83) is rotatably connected to the inner ring surface of the annular baffle plate (41) through a bearing. The lower end surface of the support plate (83) is connected to the end of the spring away from the water storage tank (1), and a through hole for the screw (81) to pass through is opened on the support plate (83).

5. The agricultural recycled water irrigation equipment according to claim 4, characterized in that: A limit assembly is provided between the support plate (83) and the water storage tank (1), the limit assembly being used to limit the rotation of the support plate (83), and the limit assembly comprises: A rectangular outer tube (84) is sleeved on the outer side of the lead screw (81), and one end of the rectangular outer tube (84) is fixed to the top of the water storage tank (1); A rectangular inner tube (85) is sleeved on the outer side of the lead screw (81), one end of the rectangular inner tube (85) is slidably connected to the inner side of the rectangular outer tube (84), and the other end of the rectangular inner tube (85) is fixed to the bottom of the support plate (83).

6. The agricultural recycled water irrigation equipment according to claim 5, characterized in that: At least two hemispherical grooves (43) are formed at the bottom of the annular shielding plate (41), each of which is provided with a ball (44). An annular support plate (45) is fixed on the outer wall of the groove of each hemispherical groove (43), and an arc surface matching the surface of the ball (44) is formed on the inner ring surface of the annular support plate (45).

7. An irrigation method for irrigating crops by collecting rainwater, characterized in that: The rainwater is collected by using the agricultural recycled water irrigation equipment according to any one of claims 1 to 2, and the method for collecting rainwater comprises the following steps: On rainy days, rainwater is collected by using the water collecting pipe (2). When the weight of the rainwater is greater than the elastic supporting force of the elastic supporting member (5), the closing plate (42) is pressed down, so that the annular shielding plate (41) opens the pipe opening of the water delivery pipe (3), and the rainwater enters the water storage tank (1) through the water delivery pipe (3) for storage; When the water storage tank (1) is filled with rainwater, the float (61) floats upward, and the lifting portion (62) is driven by the connecting rod (63) to lift the annular shielding plate (41), so that the annular shielding plate (41) closes the pipe opening of the water delivery pipe (3).

Images