Pulse sprinkler nozzle based on water hammer principle

Abstract

The present invention discloses a water hammer principle pulse sprinkler nozzle, comprising rubber, a valve, and a nozzle body. When the nozzle does not flow water, the valve moves downward to the bottom of the valve slot under the action of the elastic rubber. When the nozzle starts to flow water, strong water pressure enters the water hammer chamber to push the elastic rubber upward, and then drives the valve to move upward until the valve hole is opposite to the nozzle outlet cavity, and high-pressure water flows through the valve hole into the nozzle outlet cavity, and the high-pressure water flow is ejected to relieve pressure. Subsequently, the water pressure in the water hammer chamber decreases, and the elastic rubber falls back downward under the action of the tension force. The valve moves downward to the bottom of the valve slot under the action of the elastic rubber, and the valve blocks the passage, and this reciprocating process is used to realize the water hammer principle pulse sprinkler irrigation. The present invention utilizes the water hammer principle to eject a continuous water flow with uniform pressure in the form of intermittent high-pressure water flow, which greatly improves the range, and has a simple structure and is easy to process.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural sprinkler nozzles, in particular to a pulse sprinkler nozzle based on the water hammer principle. Background Art

[0002] Nozzles are a critical component of sprinkler irrigation systems, and their hydraulic performance directly impacts the quality of irrigation projects. Existing sprinkler systems have a relatively short range, requiring too many nozzles to irrigate the same area of farmland. This increases water consumption, resulting in poor irrigation uniformity, wasted water resources, and increased irrigation costs. To achieve a long range, both high flow rate and increased pressure are required. Traditional irrigation sprinkler design methods simply increase the nozzle inlet pressure and flow rate to achieve effective irrigation, significantly increasing water consumption. Therefore, once a sprinkler's power is determined, its range is also limited. Excessive focus on range can compromise irrigation quality (high intensity, large droplets, and uneven distribution). Therefore, the design and development of sprinklers with both long range and high irrigation quality is a real need and a key topic in sprinkler innovation research. Summary of the Invention

[0003] The main purpose of the present invention is to provide a pulse sprinkler nozzle based on the water hammer principle which has a simple structure and greatly improves irrigation efficiency.

[0004] The technical solution adopted in the present invention is:

[0005] Provided is a pulse sprinkler nozzle based on the water hammer principle, comprising an elastic rubber, a valve and a nozzle body;

[0006] The nozzle body is provided with a valve slot, the lower part of the valve is stuck in the valve slot, and the valve divides the interior of the nozzle body into two parts, one side of which is provided with a nozzle inlet cavity, and the other side is provided with a nozzle outlet cavity. One side of the nozzle outlet cavity is also provided with an air hole communicating with the external atmosphere;

[0007] The elastic rubber is fixed to the top of the nozzle body and adhered to the top of the valve; under the action of water flow, the elastic rubber drives the valve to move up and down;

[0008] A valve hole is provided on the valve. When the valve is moved upward to the limit position, the valve hole coincides with the nozzle outlet cavity. When the valve is moved downward to the limit position, the valve hole is completely placed in the valve groove.

[0009] Following the above technical solution, the edge of the elastic rubber is attached to the upper part of the nozzle body, and the edge is sealed to separate the water hammer chamber inside the nozzle body from the outside.

[0010] Following the above technical solution, the valve hole and the nozzle outlet cavity have the same size and shape.

[0011] Following the above technical solution, the nozzle inlet cavity and the nozzle outlet cavity have the same diameter and are on the same straight line.

[0012] Following the above technical solution, a water storage cavity is further provided on one side of the nozzle inlet cavity in the nozzle body, and is communicated with the nozzle inlet cavity.

[0013] Following the above technical solution, the nozzle body is an integrated structure.

[0014] Following the above technical solution, the valve is a long strip structure with a valve hole.

[0015] Following the above technical solution, the top of the valve is adhered to the middle of the elastic rubber.

[0016] According to the above technical solution, the nozzle inlet cavity and the nozzle outlet cavity have the same cavity length.

[0017] Following the above technical solution, the length of the nozzle inlet cavity is greater than the length of the nozzle outlet cavity.

[0018] The present invention also provides a pulsed sprinkler irrigation method based on the water hammer principle, which utilizes the pulsed sprinkler irrigation nozzle based on the water hammer principle of the above technical solution and includes the following steps:

[0019] When the nozzle is not flowing with water, the valve moves downward to the bottom of the valve groove under the action of the elastic restoring force of the elastic rubber, and the valve hole in the middle of the valve also slides into the valve groove;

[0020] When the sprinkler starts to work, the valve hole slides into the valve groove, and water cannot pass through the valve into the sprinkler outlet cavity. The water pressure pushes the elastic rubber upward, and the elastic rubber drives the valve upward, and the valve hole in the middle of the valve also moves upward until the valve hole is connected with the sprinkler outlet cavity. High-pressure water flows through the valve hole into the sprinkler outlet cavity and ejects the high-pressure water flow to relieve pressure.

[0021] The water pressure in the water hammer chamber decreases, and the elastic rubber falls back under the action of the restoring force. The valve then moves downward to the bottom of the valve slot. The valve hole in the middle of the valve also slides into the valve slot, and the valve blocks the passage. External air is sucked into the nozzle outlet chamber through the air hole, pushing the water out.

[0022] The high-pressure water enters the water hammer chamber again, and reciprocates to realize pulse sprinkler irrigation based on the water hammer principle.

[0023] The beneficial effects of the present invention are as follows: Utilizing the water hammer principle, the present invention transforms a continuous water stream with uniform pressure into an intermittent high-pressure stream, significantly increasing the range and spray radius. When irrigating the same area of farmland, the number of sprinkler heads used is reduced, the diameter and density of water supply pipes can be reduced, and the spacing between sprinkler heads and pipes can be increased, thereby reducing irrigation costs, improving agricultural water use efficiency, conserving water resources, and improving irrigation efficiency. Furthermore, the sprinkler head of this patent has a simple structure, high compatibility between its components, easy operation, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 A half-section diagram of an assembly structure of a pulse sprinkler nozzle based on the water hammer principle according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of a valve of a pulse sprinkler nozzle based on the water hammer principle according to an embodiment of the present invention moving upward;

[0027] Figure 3 This is a schematic diagram of a valve (2) of a pulse-type sprinkler nozzle based on the water hammer principle according to an embodiment of the present invention when it moves downward;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of a pulse sprinkler nozzle based on the water hammer principle in an embodiment of the present invention.

[0029] In the picture:

[0030] 1-elastic rubber; 2-valve; 3-nozzle body;

[0031] a-water hammer chamber; b-valve hole; c-air hole; d-valve slot; e-nozzle inlet chamber; f-nozzle outlet chamber. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] like Figure 1 、 4 As shown, the pulse sprinkler nozzle based on the water hammer principle according to the embodiment of the present invention includes an elastic rubber 1, a valve 2 and a nozzle body 3;

[0034] The nozzle body 3 is provided with a valve groove d, and the lower part of the valve 2 is stuck in the valve groove d. The valve 2 divides the interior of the nozzle body 3 into two parts, one side of which is provided with a nozzle inlet cavity e, and the other side is provided with a nozzle outlet cavity f. The nozzle outlet cavity f is also provided with an air hole c that communicates with the external atmosphere.

[0035] The elastic rubber 1 is fixed to the top of the nozzle body 3 and adhered to the top of the valve 2. Under the action of water flow, the elastic rubber 1 drives the valve 2 to move up and down.

[0036] A valve hole b is provided on the valve 2. When the valve 2 is moved upward to the limit position, the valve hole b coincides with the nozzle outlet cavity f. When the valve 2 is moved downward to the limit position, the valve hole b is completely placed in the valve groove d.

[0037] In the embodiment of the present invention, the edge of the elastic rubber 1 is attached to the upper portion of the nozzle body 2 and is sealed to separate the water hammer chamber a inside the nozzle body 2 from the outside.

[0038] The valve hole b is the same size and shape as the nozzle outlet cavity f.

[0039] The nozzle inlet cavity e and the nozzle outlet cavity f have the same diameter and are on the same straight line.

[0040] The air hole c is arranged at the lower part of the nozzle outlet cavity f of the nozzle body 3 near the valve 2 and is communicated with the outside air.

[0041] like Figure 1 As shown, a water hammer chamber a is provided in the nozzle body 3 and is communicated with the nozzle inlet chamber e.

[0042] The valve 2 is a long strip structure with a valve hole b. It is understandable that the valve 2 can also be designed as a cylindrical structure.

[0043] In order to ensure uniform force, the top of the valve 2 can be adhered to the middle of the elastic rubber 1.

[0044] In one embodiment of the present invention, the nozzle inlet cavity e and the nozzle outlet cavity f have the same cavity length. It is understandable that the cavity length of the nozzle inlet cavity e can also be designed to be greater than the cavity length of the nozzle outlet cavity f.

[0045] The pulsed sprinkler irrigation method based on the water hammer principle according to the embodiment of the present invention utilizes the pulsed sprinkler irrigation nozzle based on the water hammer principle according to the above embodiment, and mainly includes the following steps:

[0046] When the nozzle is not flowing with water, the valve 2 moves downward to the bottom of the valve groove d under the action of the elastic restoring force of the elastic rubber 1, and the valve hole b in the middle of the valve 2 also slides into the valve groove d;

[0047] like Figure 2As shown in the figure, when the sprinkler starts to flow water, the valve hole b slides into the valve groove d, and water cannot enter the sprinkler outlet cavity f through the valve 2. The water pressure pushes the elastic rubber 1 upward, and the elastic rubber 1 drives the valve 2 to move upward. The valve hole b in the middle of the valve 2 also moves upward until the valve hole b is connected to the sprinkler outlet cavity f. High-pressure water flows through the valve hole b into the sprinkler outlet cavity f and ejects the high-pressure water flow to relieve the pressure.

[0048] like Figure 3 As shown, the water pressure in water hammer chamber a decreases, causing the elastic rubber 1 to fall downward under the restoring force. Valve 2 then moves downward to the bottom of valve slot d, and the valve hole b in the middle of valve 2 also slides into valve slot d, blocking the flow. External air is drawn into the nozzle outlet chamber f through air hole c, pushing water out. When the nozzle is shut off, valve 2, under the action of elastic rubber 1, moves downward to the bottom of valve slot d, and the valve hole b in the middle of valve 2 also slides into valve slot d. When the nozzle begins to flow, because valve hole b slides into valve slot d, water cannot pass through valve 2 into nozzle outlet chamber f and out of the nozzle. Consequently, strong water pressure enters water hammer chamber a, pushing the elastic rubber 1 upward, which in turn drives valve 2 upward, and valve hole b in the middle of valve 2 also moves upward, until valve hole b is aligned with nozzle outlet chamber f. High-pressure water then flows through valve hole b into nozzle outlet chamber f, releasing the pressure. The water pressure in water hammer chamber a then decreases, and elastic rubber 1 falls back under the tension. Valve 2, under the action of elastic rubber 1, moves downward to the bottom of valve slot d. The valve hole b in the middle of valve 2 also slides into valve slot d, blocking the passage. Gas is drawn into the nozzle outlet chamber f through air hole c, pushing the water out.

[0049] Because valve 2 blocks the passage, strong water pressure enters the water hammer chamber a again, pushing up the elastic rubber 1, and then drives valve 2 to move upward. The valve hole b in the middle of valve 2 also moves upward again until the valve hole b and the nozzle outlet cavity f are opposite to each other again. High-pressure water passes through the valve hole b again and flows into the nozzle outlet cavity f, ejecting the high-pressure water flow to relieve the pressure. This reciprocating process realizes pulsed sprinkler irrigation based on the water hammer principle.

[0050] In summary, the present invention utilizes the water hammer principle to eject a continuous water flow with average pressure in the form of an intermittent high-pressure water flow, which greatly increases the range and the spray radius. When irrigating farmland of the same area, the number of nozzles used is reduced, and the diameter and pipe density of the water supply pipe can be reduced, that is, the spacing between the nozzles and pipes is increased, thereby reducing irrigation costs, improving agricultural water use efficiency, saving water resources, and improving irrigation efficiency. In addition, the invention has a simple structure and is easy to process.

[0051] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A pulse sprinkler nozzle based on the water hammer principle, characterized in that: It includes elastic rubber (1), valve (2) and nozzle body (3); A valve groove (d) is provided on the nozzle body (3), and the lower part of the valve (2) is stuck in the valve groove (d). The valve (2) divides the interior of the nozzle body (3) into two parts, one side of which is provided with a nozzle inlet cavity (e) and the other side is provided with a nozzle outlet cavity (f). One side of the nozzle outlet cavity (f) is also provided with an air hole (c) communicating with the external atmosphere. The elastic rubber (1) is fixed to the top of the nozzle body (3) and adheres to the top of the valve (2); under the action of water flow, the elastic rubber (1) drives the valve (2) to move up and down; The valve (2) is provided with a valve hole (b). When the valve (2) is moved upward to the limit position, the valve hole (b) coincides with the nozzle outlet cavity (f). When the valve (2) is moved downward to the limit position, the valve hole (b) is completely placed in the valve groove (d). A water hammer chamber (a) is provided in the nozzle body (3) and is communicated with the nozzle inlet chamber (e); The valve (2) is a long strip structure provided with a valve hole (b).

2. The pulse sprinkler nozzle based on the water hammer principle according to claim 1 is characterized in that: The edge of the elastic rubber (1) is attached to the upper part of the nozzle body (3), and the edge is sealed to separate the water hammer chamber (a) inside the nozzle body (3) from the outside.

3. The pulse sprinkler nozzle based on the water hammer principle according to claim 1 is characterized in that: The valve hole (b) is the same size and shape as the nozzle outlet cavity (f).

4. The pulse sprinkler nozzle based on the water hammer principle according to claim 1 is characterized in that: The nozzle inlet cavity (e) and the nozzle outlet cavity (f) have the same diameter and are on the same straight line.

5. The pulse sprinkler nozzle based on the water hammer principle according to claim 1 is characterized in that: The top of the valve (2) is bonded to the middle of the elastic rubber (1).

6. The pulse sprinkler nozzle based on the water hammer principle according to any one of claims 1 to 5, characterized in that: The nozzle inlet cavity (e) and the nozzle outlet cavity (f) have the same length.

7. The pulse sprinkler nozzle based on the water hammer principle according to any one of claims 1 to 5, characterized in that: The length of the nozzle inlet cavity (e) is greater than the length of the nozzle outlet cavity (f).

8. A pulse sprinkler irrigation method based on the water hammer principle, characterized in that: The method utilizes the pulse sprinkler nozzle based on the water hammer principle as claimed in claim 1, and comprises the following steps: When the nozzle does not flow water, the valve (2) moves downward to the bottom of the valve groove (d) under the action of the elastic restoring force of the elastic rubber (1), and the valve hole (b) in the middle of the valve (2) also slides into the valve groove (d); When the nozzle starts to work, since the valve hole (b) slides into the valve groove (d), water cannot enter the nozzle outlet cavity (f) through the valve (2), and the water pressure pushes the elastic rubber (1) upward, and the elastic rubber (1) drives the valve (2) to move upward, and the valve hole (b) in the middle of the valve (2) also moves upward until the valve hole (b) is connected with the nozzle outlet cavity (f), and the high-pressure water flows through the valve hole (b) into the nozzle outlet cavity (f) and ejects the high-pressure water flow to release the pressure; The water pressure in the water hammer chamber (a) decreases, and the elastic rubber (1) falls back under the action of the restoring force, and the valve (2) moves downward to the bottom of the valve groove (d). The valve hole (b) in the middle of the valve (2) also slides into the valve groove (d), and the valve (2) blocks the passage; the external air is sucked into the nozzle outlet chamber (f) through the air hole (c), pushing the water flow out; The high-pressure water enters the water hammer chamber (a) again, and reciprocates to realize pulsed sprinkler irrigation based on the water hammer principle.

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