A sprinkling device and a sprinkling system

Abstract

The utility model belongs to the field of irrigation technology, concretely relates to a seedling spraying irrigation device, including the tubulature, the tubulature is connected with the water pipe, be equipped with the sprinkler on the water pipe, the sprinkler includes the connecting pipe, the connecting pipe inner wall is connected with the fixed block, the fixed block is penetrated by the guide post and is connected with the guide post slidingly, the guide post end is connected with the sealing head. This seedling spraying irrigation device, through the joint type structure design of connecting pipe and connecting head, has realized the quick installation of the sprinkler head, only needs to press the connecting head and the connecting pipe alignment during installation, can complete the joint fixing through the elastic reset of the clamp head on the articulated rod, need not the complex tool operation, greatly shortens the installation time, simultaneously, the sealing ring of connecting head inner wall and connecting pipe outer wall forms the extrusion seal in the installation process, and the sealing washer one of connecting pipe end further strengthens the sealing effect of sealing washer two of connecting head inner wall.

Description

Technical Field

[0001] This utility model relates to the field of irrigation technology, specifically a seedling sprinkler irrigation device, which can be widely used in the precise water management of Chinese medicinal herb seedling cultivation, vertical cultivation, and facility agriculture. Background Technology

[0002] A seedling sprinkler irrigation system is an irrigation device specifically designed for seedling cultivation. It simulates natural rainfall or precisely controls water flow to evenly spray water and nutrients onto the seedbed, providing a suitable growth environment for the seedlings. Currently, most existing seedling sprinkler irrigation systems rely on threaded or flanged connections for their sprinkler heads. Threaded connections require repeated rotation and are time-consuming to install, while flanged connections require bolts, gaskets, and other accessories, making the process cumbersome and requiring additional tools. This makes it difficult to meet the needs of rapid deployment of multiple sprinkler heads in seedling cultivation scenarios. In particular, existing seedling systems for *Stemona japonica* generally use suspended rotating sprinklers or inverted micro-sprinklers, installed at a height of over 70 cm with a spray radius of 1.5–2.5 m. This method has the following drawbacks: the long droplet falling distance makes it prone to drift due to the cross-flow of air in the greenhouse, resulting in uneven bed humidity and a seedling survival rate difference of >15%; the strong impact of water jets above 70 cm can easily wash away the shallow substrate, causing the tuberous roots of Stemona japonica to be exposed or the seedlings to fall over; the nozzle spacing is usually ≥2 m, requiring high pressure for full coverage, resulting in high energy consumption; the high nozzles block the supplemental lighting, reducing the light distribution coefficient of the upper part of the seedbed by more than 10%, affecting photosynthetic accumulation. Therefore, there is an urgent need for a low-position, low-pressure, low-drift, densely spaced sprinkler irrigation system that is more suitable for Stemona japonica seedling cultivation. Utility Model Content

[0003] The main objective of this invention is to provide a seedling irrigation device, particularly a low-position dense-row irrigation system for Stemona japonica seedling cultivation, which can solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model proposes a seedling sprinkler irrigation device, comprising a pipe body connected to a water pipe, and a sprinkler device mounted on the water pipe, the sprinkler device comprising: A connecting pipe, the inner wall of which is connected to a fixing block, the fixing block being penetrated by a guide rod and slidably connected to the guide rod, and a sealing head being connected to the end of the guide rod; A connector, wherein an extrusion block is connected to the inner wall of the connector, and a hinge rod is hinged to the side wall of the connector, and a locking head is provided at the end of the hinge rod; The rod body is a first rod, and a second rod is provided at one end of the first rod. The first rod and the second rod are connected by an adjustment assembly. A connecting block is connected to the end of the second rod, and a spray head is provided on the connecting block. The spray head and the connecting block are connected by a hose.

[0005] Preferably, the adjusting assembly includes a bolt, the bolt being threadedly connected to a nut, and a U-shaped rod being connected to the outer wall of the nut.

[0006] Preferably, the sealing head is elastically connected to the outer wall of the fixing block by a spring.

[0007] Preferably, the inner wall of the connecting pipe is provided with a sealing ring, and the end of the connecting pipe is provided with a sealing gasket to improve its sealing performance.

[0008] Preferably, the inner wall of the connector is provided with a second sealing gasket.

[0009] Preferably, a spring is provided between the hinge rod and the side wall of the connector.

[0010] Preferably, the hinge rods are provided in two sets and are circumferentially distributed on the outer wall of the connector.

[0011] This utility model provides a seedling sprinkler irrigation device. It has the following beneficial effects: (1) The seedling sprinkler irrigation device achieves rapid installation of the sprinkler head through the snap-fit ​​structure design of the connecting pipe and the connector. During installation, it is only necessary to align and press the connector and the connecting pipe, and the snap-fit ​​fixation can be completed by the elastic reset of the snap-fit ​​on the hinge rod. No complicated tools are required, which greatly shortens the installation time. At the same time, during the installation process, the sealing ring of the inner wall of the connector and the outer wall of the connecting pipe forms a compression seal, and the sealing gasket 1 at the end of the connecting pipe and the sealing gasket 2 on the inner wall of the connector further enhance the sealing effect.

[0012] (2) This seedling sprinkler irrigation device achieves convenient adjustment of the sprinkler head angle by means of the adjustment component. The nut can be easily loosened or tightened by the U-shaped rod to release or fix the constraint of the rod body two, thereby driving the sprinkler head to rotate and adjust the angle. The operation is simple and the adjustment accuracy is easy to control. For different crop distributions in different areas, the sprinkler head angle can be adjusted to match the actual spraying needs, avoiding the problem of uneven irrigation caused by fixed sprinkler angle, effectively improving water resource utilization, ensuring the consistency of crop growth in the seedling environment, and having stronger adaptability.

[0013] (3) Reducing the spraying height to 10 cm reduces drift loss from 18% to <3%; 1m equidistant dense arrangement reduces the flow rate of a single nozzle from 120 L·h -1 Reduced to 35 L·h -1 The uniformity Cu≥88% is maintained; at the same time, the working pressure is reduced and the daily power consumption of the pump group is also reduced; the nozzle is hidden in a low position and the LED supplementary light strip can be arranged at a height of 30 cm, which improves the uniformity of photosynthetic photon flux density; the splash guard avoids substrate splashing, the root exposure rate of Stemona japonica is <1%, and the seedling rate is increased to 96.7%. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the spraying device; Figure 2 This is a schematic diagram of the internal structure of the connecting pipe and connector of the spray device; Figure 3 This is a three-dimensional structural diagram of the spray device. Figure 4 This is a three-dimensional structural diagram of the adjusting component of the spray device.

[0016] Figure 5 This is a connection diagram of the sprinkler system.

[0017] Explanation of icon numbers: 31. Connecting pipe; 311. Fixing block; 312. Guide rod; 313. Sealing head; 314. Sealing gasket one; 315. Sealing ring; 32. Connecting head; 321. Extrusion block; 322. Sealing gasket two; 323. Hinge rod; 324. Clip; 33. Rod body one; 34. Rod body two; 35. Adjusting assembly; 351. Bolt; 352. Nut; 353. U-shaped rod; 36. Connecting block; 37. Spray head; 38. Hose; 101. Water pump; 102. Check valve; 103. First pressure gauge; 104. First-stage pressure reducing valve; 105. Main filter; 106. Main pipeline; 107. Branch pipeline interface; 201. Second pressure gauge; 202. Second-stage pressure reducing valve; 203. Branch filter; 204. Branch pipeline; 205. Capillary tube interface; 208. Solenoid valve; 301. Capillary tube; 303. Sprinkler device.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1 Please see Figures 1-4 This utility model proposes a seedling sprinkler irrigation device, including a pipe body 1, a water pipe 2 connected to the pipe body 1, and a sprinkler device 3 provided on the water pipe 2. This device utilizes a smart irrigation solution provided by Cellular IoT, employing IoT, sensors, and intelligent control technologies to achieve precise, automated, and intelligent irrigation. The process can be divided into four core stages: water source treatment, water-fertilizer integration, data monitoring, and intelligent irrigation execution. Water is pumped from the source and then passes through a sand filter and a disc filter to remove sand, impurities, and other contaminants, completing the water purification pretreatment. The purified water then enters the intelligent water-fertilizer integrated machine. Simultaneously, a fertilizer pump draws fertilizer solution from multiple fertilizer tanks, achieving precise water-fertilizer ratio and uniform mixing within the integrated machine. This process can transmit commands via 485 bus and a 4G solar irrigation controller, and supports remote control of the water-fertilizer ratio scheme via mobile phone / computer, further facilitating communication via 4G / 5G / NB-IoT. Wireless sensors (soil temperature and humidity, pH / EC, nitrogen, phosphorus and potassium sensors, etc.) monitor soil temperature, humidity, pH, nutrient content and other data in real time. Then, meteorological monitoring stations (sensors for wind speed, wind direction, air temperature, humidity, light, rainfall, etc.) collect external meteorological information in real time. This data provides a scientific basis for irrigation decisions. Finally, based on the monitored soil and meteorological data, the water and fertilizer mixture is delivered to different irrigation devices through solenoid valves to achieve precise irrigation for different crops and different scenarios. At the same time, the solenoid valves can independently control each irrigation area to supply water and fertilizer as needed.

[0021] In this embodiment of the utility model, in order to facilitate the quick installation of the spray head 37, specifically, the connecting pipe 31 has a fixing block 311 connected to its inner wall. The fixing block 311 is penetrated by the guide rod 312 and is slidably connected to the guide rod 312. The end of the guide rod 312 is connected to a sealing head 313. The sealing head 313 is elastically connected to the outer wall of the fixing block 311 by a spring. The inner wall of the connecting head 32 is connected to a pressing block 321. The side wall of the connecting head 32 is hinged to a hinge rod 323. A spring is provided between the hinge rod 323 and the side wall of the connecting head 32. The end of the hinge rod 323 is provided with a clip 324. There are two sets of hinge rods 323, which are circumferentially distributed on the outer wall of the connecting head 32. Furthermore, a second rod 34 is provided at the end of the first rod 33. The first rod 33 and the second rod 34 are connected by an adjustment assembly 35. A connecting block 36 is connected to the end of the second rod 34. A spray head 37 is provided on the connecting block 36. The spray head 37 is connected to the connecting head 32 by a hose 38. The adjustment assembly 35 includes a bolt 351. A nut 352 is threadedly connected to the bolt 351. A U-shaped rod 353 is connected to the outer wall of the nut 352. Furthermore, the inner wall of the connecting pipe 31 is provided with a sealing ring 315, and the end of the connecting pipe 31 is provided with a sealing gasket 314 to improve its sealing performance. The inner wall of the connector 32 is provided with a sealing gasket 322. In this utility model, when installing the spray head 37, first align the connector 32 with the interface of the connecting pipe 31 to ensure that they are coaxial; then press down on the connector 32. During the pressing process, the inner wall of the connector 32 will first contact and squeeze the sealing ring 315 on the outer wall of the connecting pipe 31, causing the sealing ring 315 to deform and improve the sealing performance of the device.

[0022] A downward force is continuously applied to the connector 32, causing it to continue moving axially along the connecting tube 31. After the connector 32 moves downward a certain distance, its outer wall will contact the clamp 324 hinged to the connecting tube 31 and squeeze the clamp 324, forcing the hinge rod 323 to rotate around the hinge point. At the same time, the spring on one side of the hinge rod 323 is compressed and undergoes elastic deformation.

[0023] When the connector 32 and the connecting tube 31 are fully closed, the squeezing force of the connector 32 on the clamp 324 disappears; at this time, the clamp 324 is reset under the action of the spring force and is clamped on the outer wall of the connecting tube 31, thus completing the clamping and fixing of the two and preventing the connector 32 from falling off.

[0024] In addition, during the installation process, the squeezing block 321 inside the connector 32 will simultaneously squeeze the sealing head 313 at the port of the connecting pipe 31, pushing the sealing head 313 downward, thereby opening the water outlet of the connecting pipe 31; at this time, the connecting pipe 31 and the internal channel of the connector 32 are completely connected, and subsequent water can be sprayed out normally through the spray head 37. When adjusting the angle of the spray head 37, first loosen the nut 352 by rotating the U-shaped rod 353 clockwise, releasing the fixing constraint on the rod body 34. Then, rotate the rod body 34 by hand, which will drive the spray head 37 at the end to rotate synchronously. After adjusting the spray head 37 to a suitable spray angle according to the actual spraying needs, stop rotating the rod body 34. Finally, use the U-shaped rod 353 to hold the nut 352 in place again, and tighten the nut 352 by rotating the U-shaped rod 353 counterclockwise. The friction between the nut 352 and the rod body 34 will fix its position, thus completing the angle adjustment of the spray head 37.

[0025] Example 2 A low-level, densely spaced sprinkler irrigation system for Stemona japonica seedling cultivation includes a main pipeline assembly, branch pipeline assemblies, capillary tubes, and the sprinkler device described in Example 1. The main pipeline assembly, from upstream to downstream, includes a water pump 101, a check valve 102, a first pressure gauge 103, a primary pressure reducing valve 104, a main filter 105, and a main pipeline 106. In this embodiment, the check valve 102 adopts a swing-type structure to prevent backflow of water from impacting the water pump 101 when the water supply stops; the first pressure gauge 103 is used to monitor the initial pressure at the outlet of the water pump 101 in real time; the primary pressure reducing valve 104 is an adjustable pilot-operated pressure reducing valve, and its outlet pressure is set to 0.05–0.08 MPa to provide a stable base pressure for the entire main pipeline system; the main filter 105 consists of a centrifugal filter and a 120-mesh screen filter connected in series. The centrifugal filter is used to separate large particulate impurities such as sand from the water, and the screen filter has a filtration accuracy of 120 mesh to intercept finer suspended matter. The water purified by the main filter 105 flows into the main pipeline 106. The main pipe 106 is made of PVC-U material, with a nominal diameter of 20–25 mm and a pressure resistance of 0.6 MPa. It is arranged centrally along the longitudinal direction of the seedbed. A branch pipe interface 107 is provided every 1 meter on the main pipe 106, and each interface is connected to a set of branch pipe assemblies.

[0026] The branch pipeline assembly, from upstream to downstream, includes a second pressure gauge 201, a secondary pressure reducing valve 202, a branch filter 203, and a branch pipeline 204. In this embodiment, the branch pipeline 204 is made of PE material and has a nominal diameter of DN32. The second pressure gauge 201 is used to monitor the water pressure entering the branch and observe the pressure loss after being transported through the main pipeline 106. The secondary pressure reducing valve 202 is an adjustable pressure reducing valve, which precisely adjusts its outlet pressure to 0.3 MPa according to the needs of the service area of ​​the branch, to ensure that the pressure in the branch is independent of the pressure fluctuation of the main pipeline. The branch filter 203 is a stainless steel mesh filter with a filtration accuracy of 80 mesh, which performs a final interception of tiny impurities that may be brought from the main pipeline or generated within the branch. Multiple capillary interfaces 205 are set on the branch pipeline 204 according to the crop layout.

[0027] One end of the capillary tube 301 is connected to the capillary tube interface 205 via the quick-connect connector, and the other end is connected to the connecting pipe 31 of the spray device 303.

[0028] Example 3 In this embodiment, the capillary tube 301 is a flexible tube, which is connected to the connecting pipe 31 of the spray device 303 through a quick-connect fitting; the spray device 303 is installed through a lifting sliding sleeve, which allows the spray device 303 to be infinitely adjustable and positioned.

[0029] The preferred hose material for the nozzle capillary is PE hose, especially HDPE (high-density polyethylene) and PERT (heat-resistant polyethylene). This preferred material offers exceptional flexibility, allowing for easy bending and winding. Adjusting the nozzle height eliminates concerns about hose breakage or stiffness, ensuring smooth operation. Its lightweight nature makes lifting and moving the capillary for height adjustments effortless, requiring only one person. Excellent weather resistance prevents aging and cracking under extreme sunlight and low temperatures, maintaining flexibility even after long-term outdoor use and allowing for repeated adjustments. Its pressure resistance is well-suited to sprinkler irrigation needs, meeting the pressure requirements of most nozzles (micro-sprinklers, rotary nozzles), and maintaining stable water delivery after height adjustment. Easy connection with quick-connect fittings and clamps ensures quick and secure sealing after height adjustment, preventing leaks.

[0030] The quick-connect female connector at the rigid pipe end is welded or threaded onto the rigid pipe, and is made of plastic or metal. The flexible hose end can be directly inserted into the quick-connect female connector. During installation, the hose end must be cut flush and free of burrs. Clean the pipe wall before insertion to avoid impurities scratching the sealing ring. When inserting the hose into the connector, push it all the way in until you hear a "click," indicating that the locking mechanism is in place. You can gently pull the hose to confirm that it is not loose. Quick-connect connectors with double seals are preferred, such as those with built-in O-rings and dust rings, to improve leak prevention.

[0031] Example 4 In this embodiment, the sprinkler system further includes a solenoid valve 208 and a humidity sensor; the solenoid valve 208 is installed between the second pressure gauge 201 and the secondary pressure reducing valve 202; the humidity sensor is communicatively connected to the solenoid valve 208 to achieve automatic start and stop when the substrate moisture content is 45%.

[0032] Example 5 In this embodiment, the nozzle is a micro-nozzle with a built-in swirling atomizing chamber, K=35 L·h -1 ·bar -0.5 The spray angle is 120° and the atomized particle size is 0.8–1.2 mm. A splash guard with an outer diameter of φ30 mm and a height of 8 mm is installed on the micro nozzle, with a 2 mm overflow gap between the edge and the bed surface to prevent backflow and blockage. It also includes a lifting slide sleeve, which allows the nozzle to be steplessly positioned within a range of 5–15 cm to adapt to the canopy height of different leaf ages.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A spraying device, characterized in that: Includes a pipe body, the pipe body is connected to a water pipe, the water pipe is provided with a spray device (303), the spray device (303) includes a connecting pipe (31) and a connector (32). A connecting pipe (31) has a fixing block (311) connected to its inner wall. The fixing block (311) is penetrated by a guide rod (312) and is slidably connected to the guide rod (312). A sealing head (313) is connected to the end of the guide rod (312). Connector (32), the inner wall of the connector (32) is connected to a pressing block (321), the side wall of the connector (32) is hinged to a hinge rod (323), and the end of the hinge rod (323) is provided with a clip (324). A rod body 1 (33) is provided at the end of the rod body 1 (33) and a rod body 2 (34). The rod body 1 (33) and the rod body 2 (34) are connected by an adjustment component (35). A connecting block (36) is connected to the end of the rod body 2 (34). A spray head (37) is provided on the connecting block (36). The spray head (37) and the connecting head (32) are connected by a hose (38).

2. The spraying device according to claim 1, characterized in that: The adjustment assembly (35) includes a bolt (351), which is threaded with a nut (352), and the outer wall of the nut (352) is connected with a U-shaped rod (353).

3. The spraying device according to claim 1, characterized in that: The sealing head (313) is elastically connected to the outer wall of the fixing block (311) by a spring.

4. A spraying device according to claim 1, characterized in that: The inner wall of the connecting pipe (31) is provided with a sealing ring (315), and the end of the connecting pipe (31) is provided with a sealing gasket (314) to improve its sealing performance.

5. A spraying device according to claim 1, characterized in that: The inner wall of the connector (32) is provided with a sealing gasket (322).

6. A spraying device according to claim 1, characterized in that: A spring is provided between the hinge rod (323) and the side wall of the connector (32).

7. A spraying device according to claim 1, characterized in that: The hinge rod (323) is provided in two sets and is circumferentially distributed on the outer wall of the connector (32).

8. A sprinkler irrigation system, characterized in that: Includes a main pipeline assembly, a branch pipeline assembly, a capillary tube, and the spraying device according to any one of claims 1 to 7; The main pipeline assembly includes, from upstream to downstream, a water pump (101), a check valve (102), a first pressure gauge (103), a first-stage pressure reducing valve (104), a main filter (105), and a main pipeline (106). The main pipeline (106) is provided with multiple branch pipeline interfaces (107). The branch pipeline assembly is connected to the branch pipeline interface (107), and from upstream to downstream it includes a second pressure gauge (201), a secondary pressure reducing valve (202), a branch filter (203) and a branch pipeline (204), and the branch pipeline (204) is provided with multiple capillary interfaces (205). One end of the capillary tube (301) is connected to the capillary tube interface (205) via a quick-connect fitting, and the other end is connected to the connecting pipe (31) of the spray device (303).

9. The sprinkler irrigation system according to claim 8, characterized in that: The capillary tube (301) is a flexible tube, which is connected to the connecting pipe (31) of the spray device (303) through a quick-connect fitting; the spray device (303) is equipped with a splash guard; the spray device (303) is installed through a lifting slide sleeve, which allows the spray device (303) to be infinitely adjustable and positioned.

10. The sprinkler system according to claim 8, characterized in that: The sprinkler system also includes a solenoid valve (208) and a humidity sensor; the solenoid valve (208) is installed between the second pressure gauge (201) and the secondary pressure reducing valve (202); the humidity sensor is communicatively connected to the solenoid valve (208).

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