Rainwater collecting type under-mulch drip irrigation device for sorghum
By designing the water collection tank based on the principle of buoyancy and using modular piping, and by linking the floating ball with the sliding structure, the problem of reduced water pressurization effect and complex mechanism in existing agricultural film-surface rainwater harvesting gravity drip irrigation devices is solved. This achieves automatic adjustment of water level and stability of the drip irrigation system, improves water use efficiency, and is suitable for water-saving cultivation of sorghum crops in arid regions.
Patent Information
- Application Number
- CN202521068259.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-05-28
AI Technical Summary
In existing facility agriculture film-based rainwater harvesting gravity drip irrigation devices, the elastic balloon suffers from material fatigue after prolonged use, leading to a reduction in water pressurization effect. The mechanism design is complex and requires manual maintenance, affecting equipment efficiency and applicability.
The system is designed using the buoyancy principle within the water collection tank. Through the linkage between the floating ball and the sliding structure, it achieves automatic water level adjustment. Combined with modular pipelines and a water storage tank, it utilizes the buoyancy principle to achieve non-powered water level sensing, avoiding clogging of the drip irrigation system. Furthermore, it guides water flow through gradient pressure difference to ensure drip irrigation effectiveness.
It achieves automatic water level regulation and stability of the drip irrigation system, avoids the risk of clogging, improves water use efficiency, and meets the water-saving cultivation needs of sorghum crops in arid regions.
Smart Images

Figure CN223929048U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural irrigation equipment technology, specifically a rain-collecting drip irrigation device for sorghum. Background Technology
[0002] By cultivating off-season vegetables in greenhouses, the temperature and humidity inside the greenhouses can be intelligently controlled, allowing some off-season fruits and vegetables to grow normally. However, after setting up greenhouses, naturally falling rainwater cannot directly water the plant surface, requiring manual watering at regular intervals, resulting in low rainwater utilization.
[0003] According to a public notice (Announcement No.: CN218007335U3) of a facility agriculture film-surface rainwater harvesting gravity drip irrigation device, rainwater is collected through a water collection cylinder. When the amount of rainwater inside the water collection cylinder reaches a certain level, it will press the elastic bladder. After the elastic bladder is compressed, it will press the water flow, so that the water flow has a certain pressure. The water pressure can push the valve disc to rotate around the hinge, and finally the water flow can drip out from the drip hole of the drip irrigation pipe. When the amount of rainwater inside the water collection cylinder is small, the first spring will press the valve disc against the sealing ring, which is conducive to the continuous collection of rainwater by the water collection cylinder.
[0004] However, in actual use, the elastic balloon of the above-mentioned device will experience material fatigue after long-term and repeated use, and the pressurization effect on water will continue to decrease. In addition, the device has a complicated mechanical design, which is not suitable for agricultural use environment. It requires manual maintenance and is not conducive to efficient operation. In view of this, we propose a rain-collecting drip irrigation device for sorghum. Utility Model Content
[0005] The purpose of this invention is to provide a rain-collecting drip irrigation device for sorghum to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A rain-collecting drip irrigation device for sorghum includes a water collection tank. A square groove is formed on the side wall of the water collection tank. A graduated window is fixedly connected to the inner surface of the square groove. A rain cover is fixedly connected to the upper surface of the water collection tank. A drain plate is fixedly connected to the inner side wall of the water collection tank. A water collection mechanism is provided inside the water collection tank, and the water collection mechanism includes:
[0007] A fixed block is provided with a groove on the side of the fixed block away from the inner wall of the water collection tank. A sliding block is slidably connected to the inner surface of the groove. A connecting rod is fixedly connected to the side of the sliding block away from the inner wall of the water collection tank. A floating ball is fixedly connected to the end of the connecting rod away from the fixed block.
[0008] The movable rod has its upper end fixedly connected to the lower surface of the floating ball, and its lower end is fixedly connected to a baffle. A sealing strip is fixedly connected to the outer surface of the baffle, and a drain hole is provided on the lower surface of the water collection tank.
[0009] Preferably, the lower surface of the water collection tank is provided with an auxiliary mechanism, the auxiliary mechanism including a connecting pipe, the outer surface of the connecting pipe being fixedly connected to the inner surface of the drain hole, the lower end of the connecting pipe being fixedly connected to a conveying pipe, the outer surface of the conveying pipe being fixedly connected to a water storage tank, and the lower surface of the water storage tank being fixedly connected to a drip irrigation head.
[0010] Preferably, the outer surface of the rain cover is uniformly provided with several sets of sieve holes, and the shape of the rain cover is set as an inverted V shape.
[0011] Preferably, the drain plate includes a flat plate and inclined plates fixedly installed on both sides of the flat plate. The inclined plates are arranged in an inclined shape with one side lower than the other side and the flat plate is located at the center of the water collection tank.
[0012] Preferably, the bottom of the water collection tank is sloping with a higher center and lower ends.
[0013] Preferably, the upper surface of the drain plate is provided with a groove matching the size of the baffle.
[0014] Preferably, the number of fixed blocks, grooves, sliding blocks, and connecting rods is set in two sets, and the two sets of fixed blocks, grooves, sliding blocks, and connecting rods are distributed in a mirror-symmetrical manner at both ends of the floating ball.
[0015] Compared with the prior art, this utility model provides a rain-collecting drip irrigation device for sorghum, which has the following beneficial effects:
[0016] 1. This sorghum drip irrigation device uses a rain-collecting film-type drip irrigation system. Through a water collection mechanism and a linkage design between a floating ball and a sliding structure, it achieves automatic water level regulation. When rainwater is collected in the collection tank via an inverted V-shaped rain cover, the floating ball rises with the water level, driving the sliding block to move vertically along the chute via a connecting rod. This, in turn, causes the movable rod to link with the baffle, disengaging it from the drain hole to complete drainage. When the water level drops, the floating ball falls back, causing the baffle covered by the sealing strip to reset, forming a dynamic opening and closing closed-loop control. This innovative structure utilizes the principle of buoyancy to achieve non-powered water level sensing, ensuring the stability of drainage flow while avoiding the risk of clogging in the drip irrigation system.
[0017] 2. This sorghum drip irrigation device uses a rain-collecting type film-covered drip irrigation system. With the addition of auxiliary mechanisms, modular pipeline design, and buffer structure of the water storage tank, it significantly improves water use efficiency. The connecting pipe and the delivery pipe form a gradient pressure difference to guide the water flow. The water storage tank can still provide a certain drip irrigation effect during drought. The drip heads distributed in an array at the bottom achieve precise subfilm wetting through capillary action. Combined with the water retention function of the water storage tank, it is particularly suitable for the water-saving cultivation needs of sorghum crops in arid regions. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the water collection mechanism of this utility model;
[0021] Figure 4 This is a schematic diagram of the auxiliary structure of this utility model.
[0022] In the diagram: 1. Water collection tank; 11. Scale window; 12. Drain plate; 13. Rain cover; 2. Water collection mechanism; 21. Fixed block; 22. Slide groove; 23. Sliding block; 24. Connecting rod; 25. Floating ball; 26. Movable rod; 27. Baffle; 28. Sealing strip; 29. Drain hole; 3. Auxiliary mechanism; 31. Connecting pipe; 32. Delivery pipe; 33. Water storage tank; 34. Drip irrigation head. Detailed Implementation
[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a rain-collecting drip irrigation device for sorghum, including a water collection tank 1. The side wall of the water collection tank 1 is provided with a square groove. A scale window 11 is fixedly connected to the inner surface of the square groove. A rain cover 13 is fixedly connected to the upper surface of the water collection tank 1. A drain plate 12 is fixedly connected to the inner side wall of the water collection tank 1. A water collection mechanism 2 is provided inside the water collection tank 1. The water collection mechanism 2 includes: a fixed block 21, a sliding groove 22, a sliding block 23, a connecting rod 24, a floating ball 25, a movable rod 26, a baffle 27, a sealing strip 28, and a drain hole 29.
[0024] In one embodiment of this utility model, a groove 22 is provided on the side of the fixed block 21 away from the inner wall of the water collection tank 1. A sliding block 23 is slidably connected to the inner surface of the groove 22. A connecting rod 24 is fixedly connected to the side of the sliding block 23 away from the inner wall of the water collection tank 1. A float ball 25 is fixedly connected to the end of the connecting rod 24 away from the fixed block 21. The upper end of the movable rod 26 is fixedly connected to the lower surface of the float ball 25. A baffle 27 is fixedly connected to the lower end of the movable rod 26. A sealing strip 28 is fixedly connected to the outer surface of the baffle 27. A drain hole 29 is provided on the lower surface of the water collection tank 1. Two sets of fixed blocks 21, grooves 22, sliding blocks 23, and connecting rods 24 are provided, and the two sets of fixed blocks 21, grooves 22, sliding blocks 23, and connecting rods 24 are mirror-symmetrical. Distributed at both ends of the floating ball 25, the upper surface of the drain plate 12 has a groove matching the size of the baffle 27. Through the water collection mechanism 2, the automatic water level adjustment function is realized in conjunction with the linkage design of the floating ball 25 and the sliding structure. When rainwater is collected into the water collection tank 1 through the inverted V-shaped rain cover 13, the floating ball 25 rises with the water level and drives the sliding block 23 to move vertically along the slide groove 22 through the connecting rod 24. Then, through the movable rod 26, the baffle 27 is linked to disengage from the drain hole 29 to complete the drainage. When the water level drops, the floating ball 25 falls back and drives the baffle 27 covered by the sealing strip 28 to reset, forming a closed-loop control of dynamic opening and closing. This structure innovatively uses the principle of buoyancy to realize the water level sensing without power, which not only ensures the stability of drainage flow, but also avoids the risk of blockage in the drip irrigation system.
[0025] In addition, an auxiliary mechanism 3 is provided on the lower surface of the water collection tank 1. The auxiliary mechanism 3 includes a connecting pipe 31. The outer surface of the connecting pipe 31 is fixedly connected to the inner surface of the drain hole 29. The lower end of the connecting pipe 31 is fixedly connected to a delivery pipe 32. The outer surface of the delivery pipe 32 is fixedly connected to a water storage tank 33. The lower surface of the water storage tank 33 is fixedly connected to a drip irrigation head 34. By providing the auxiliary mechanism 3, combined with the modular pipeline design and the buffer structure of the water storage tank 33, the water use efficiency is significantly improved. The connecting pipe 31 and the delivery pipe 32 form a gradient pressure difference to guide the water flow. The water storage tank 33 can still have a certain drip irrigation effect during drought. The drip irrigation heads 34 distributed in an array at its bottom can achieve precise sub-film wetting. Combined with the water retention function of the water storage tank 33, it is especially suitable for the water-saving cultivation needs of sorghum crops in arid areas.
[0026] In this embodiment of the invention, the outer surface of the rain cover 13 is uniformly provided with several sets of sieve holes, and the shape of the rain cover 13 is set as an inverted V-shape, so that the device can better receive rainwater. By uniformly providing several sets of sieve holes on the outer surface of the rain cover 13, it can prevent leaves and other debris from entering the water collection tank 1 and causing blockage of the pipeline system of the device without affecting the collection of rainwater. In addition, the drain plate 12 includes a flat plate and inclined plates fixedly installed on both sides of the flat plate. The inclined plates are set in an inclined shape with one side lower than the other side. The flat plate is set in the center of the water collection tank 1, and the bottom of the water collection tank 1 is set in an inclined shape with the center higher than the two ends. By placing the drain plate 12 at an incline, it can more effectively help the collected rainwater to converge. The bottom of the water collection tank 1 is set in an inclined shape with the center higher than the two ends, which can more effectively help the rainwater to be diverted.
[0027] In this invention, during use, the device collects rainwater through an inverted V-shaped rain cover 13, filters it through a sieve, and then flows into the water collection tank 1. When the water level rises, the floating ball 25 floats up due to buoyancy, causing the sliding block 23 to move vertically along the slide groove 22. This causes the baffle 27 connected to the movable rod 26 to disengage from the drain hole 29. The water flows through the inclined plate of the drain plate 12 and is guided to the central plate. Then, it is transported by the drain plate 12 through the connecting pipe 31 to the water storage tank 33 and evenly permeates into the soil through the drip irrigation head 34. When the water level drops, the floating ball 25 returns to its original position, and the baffle 27 closes the drain hole 29 through the sealing strip 28, realizing the cycle control of automatic water storage and precise drip irrigation. At the same time, the scale window 11 can monitor the water level in real time.
[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A rain-collecting drip irrigation device for sorghum, comprising a water collection tank (1), wherein a square groove is provided on the side wall of the water collection tank (1), a scale window (11) is fixedly connected to the inner surface of the square groove, a rain cover (13) is fixedly connected to the upper surface of the water collection tank (1), and a drain plate (12) is fixedly connected to the inner side wall of the water collection tank (1), characterized in that: The water collection tank (1) is equipped with a water collection mechanism (2) inside, and the water collection mechanism (2) includes: A fixed block (21) is provided with a groove (22) on the side of the fixed block (21) away from the inner wall of the water collection tank (1). A sliding block (23) is slidably connected to the inner surface of the groove (22). A connecting rod (24) is fixedly connected to the side of the sliding block (23) away from the inner wall of the water collection tank (1). A floating ball (25) is fixedly connected to the end of the connecting rod (24) away from the fixed block (21). The upper end of the movable rod (26) is fixedly connected to the lower surface of the floating ball (25), and the lower end of the movable rod (26) is fixedly connected to a baffle (27). A sealing strip (28) is fixedly connected to the outer surface of the baffle (27), and a drain hole (29) is provided on the lower surface of the water collection tank (1).
2. The rain-collecting drip irrigation device for sorghum according to claim 1, characterized in that: The lower surface of the water collection tank (1) is provided with an auxiliary mechanism (3). The auxiliary mechanism (3) includes a connecting pipe (31). The outer surface of the connecting pipe (31) is fixedly connected to the inner surface of the drain hole (29). The lower end of the connecting pipe (31) is fixedly connected to a conveying pipe (32). The outer surface of the conveying pipe (32) is fixedly connected to a water storage tank (33). The lower surface of the water storage tank (33) is fixedly connected to a drip irrigation head (34).
3. The rain-collecting drip irrigation device for sorghum according to claim 1, characterized in that: The outer surface of the rain cover (13) is uniformly provided with several sets of sieve holes, and the shape of the rain cover (13) is set as an inverted V shape.
4. The rain-collecting drip irrigation device for sorghum according to claim 1, characterized in that: The drain plate (12) includes a flat plate and inclined plates fixedly installed on both sides of the flat plate. The inclined plates are arranged in an inclined shape with one side lower than the other side and the flat plate is located at the center of the water collection tank (1).
5. A rain-collecting drip irrigation device for sorghum according to claim 1, characterized in that: The bottom of the water collection tank (1) is set in an inclined shape with a high center and low ends.
6. A rain-collecting drip irrigation device for sorghum according to claim 1, characterized in that: The upper surface of the drain plate (12) is provided with a groove matching the size of the baffle (27).
7. A rain-collecting drip irrigation device for sorghum according to claim 1, characterized in that: The number of fixed blocks (21), sliding grooves (22), sliding blocks (23), and connecting rods (24) is set in two sets, and the two sets of fixed blocks (21), sliding grooves (22), sliding blocks (23), and connecting rods (24) are distributed in a mirror symmetrical manner at both ends of the floating ball (25).
Citation Information
Patent Citations
Facility agriculture film surface rainwater collection gravity drip irrigation device
CN218007335U