Garden irrigation nozzle capable of being automatically adjusted according to water pressure

Abstract

The utility model discloses a garden irrigation spray head capable of being automatically adjusted according to water pressure. The spray head comprises a spray head shell, an elastic air bag, a piston mechanism and a spray hole, when the water inlet pressure is equal to the designed water pressure of the nozzle, the piston mechanism is located at the designed initial position under the action of the water pressure and the pressure of the elastic air bag, and the shielding part shields part of preset spray holes; when the water inlet pressure is greater than the designed water pressure of the spray head, the piston mechanism moves upwards relative to the designed initial position, and at the moment, the shielding part releases at least partially shielded preset partial spray holes; and when the water inlet pressure is smaller than the designed water pressure of the spray head, the piston mechanism moves downwards relative to the designed initial position, and at the moment, the shielding part shields part of preset spray holes and also shields additional spray holes. The garden irrigation sprayer can automatically increase or decrease the number of the spraying holes in work when the water inlet pressure changes, it is guaranteed that the coverage range of the sprayer is within a certain range, and the garden irrigation effect is improved.

Description

Technical Field

[0001] This utility model relates to a garden irrigation sprinkler, specifically, to a garden irrigation sprinkler that can automatically adjust according to water pressure. Background Technology

[0002] Fluctuations in water pressure are common in garden irrigation. When the water pressure is insufficient, the coverage area of ​​the sprinkler head will be significantly reduced, resulting in the original irrigation area not being fully covered. How to design a garden irrigation sprinkler head that can automatically adjust according to the inlet water pressure, and automatically increase or decrease the number of nozzles in operation to ensure the sprinkler head coverage area when the inlet water pressure changes, is a technical problem that urgently needs to be solved by existing technology. Utility Model Content

[0003] In order to solve at least one of the technical problems in the background art, this utility model proposes a garden irrigation nozzle that can automatically adjust according to water pressure.

[0004] This utility model discloses a garden irrigation sprinkler head that can automatically adjust according to water pressure, comprising: a sprinkler head housing, an elastic air bladder, a piston mechanism, and spray holes; the elastic air bladder and the piston mechanism are disposed inside the sprinkler head housing, and the spray holes are disposed on the side of the sprinkler head housing; the piston mechanism can slide vertically within the sprinkler head housing, and the piston mechanism includes a blocking part; when the inlet water pressure is equal to the sprinkler head design water pressure, the piston mechanism is located at the initial design position under the action of the water pressure and the pressure of the elastic air bladder, at which time the blocking part blocks a preset portion of the spray holes; when the inlet water pressure is greater than the sprinkler head design water pressure, the piston mechanism moves upward relative to the initial design position, at which time the blocking part releases at least partially blocking the preset portion of the spray holes; when the inlet water pressure is less than the sprinkler head design water pressure, the piston mechanism moves downward relative to the initial design position, at which time the blocking part blocks additional spray holes in addition to blocking the preset portion of the spray holes.

[0005] Optionally, a limiting plate is provided in the nozzle housing to form a receiving cavity in the nozzle housing, and a through hole is provided on the limiting plate; the piston mechanism further includes: a sliding part and a connecting rod, one end of the connecting rod is connected to the sliding part, and the other end is connected to the blocking part; the elastic airbag and the sliding part are disposed in the receiving cavity, the sliding part can slide in the receiving cavity in a vertical direction, and the connecting rod passes through the through hole.

[0006] Optionally, a spring is fitted onto the connecting rod, with the upper end of the spring connected to the sliding part and the lower end connected to the limiting plate.

[0007] Optionally, the garden irrigation nozzle that can automatically adjust according to water pressure further includes: a corrugated pipe, the upper end of which is connected to the limiting plate and the lower end of which is connected to the shielding part; the corrugated pipe is used to prevent water from entering the receiving cavity through the through hole.

[0008] Optionally, the garden irrigation nozzle that can automatically adjust according to water pressure further includes: a water inlet interface; the water inlet interface is connected to the bottom of the nozzle housing.

[0009] Optionally, the bottom of the nozzle housing is provided with a connecting thread, and the water inlet is connected to the nozzle housing through the connecting thread.

[0010] Optionally, a filter screen is provided on the water inlet.

[0011] Optionally, the deformation of the bellows is matched with the displacement of the piston mechanism.

[0012] Optionally, the nozzles are evenly distributed along the circumference of the nozzle housing.

[0013] Optionally, a sealing ring is provided inside the through hole to prevent water from entering the receiving cavity through the through hole.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention proposes a garden irrigation sprinkler that can automatically adjust according to water pressure. When the inlet water pressure changes, the garden irrigation sprinkler can automatically increase or decrease the number of nozzles during operation, ensuring that the coverage area of ​​the sprinkler is within a certain range and improving the garden irrigation effect. Attached Figure Description

[0016] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0017] Figure 1 This is a schematic diagram of a garden irrigation sprinkler head that can automatically adjust according to water pressure, according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the piston mechanism in an embodiment of the present invention.

[0019] In the attached diagram:

[0020] 1. Nozzle housing;

[0021] 2. Elastic airbags;

[0022] 3. Piston mechanism;

[0023] 4. Spring;

[0024] 5. Corrugated pipe;

[0025] 6. Spray nozzle;

[0026] 7. Filter screen;

[0027] 8. Connecting threads;

[0028] 9. Water inlet interface;

[0029] 10. Receptacle cavity;

[0030] 11. Limit plate;

[0031] 31. Sliding part;

[0032] 32. Connecting rod;

[0033] 33. Covering area. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0035] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a system, product, or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include other units that are not explicitly listed or that are inherent to such products or devices.

[0036] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] like Figure 1As shown, in one embodiment of this utility model, the garden irrigation sprinkler head that can automatically adjust according to water pressure includes: a sprinkler head housing 1, an elastic air bladder 2, a piston mechanism 3, and a spray hole 6. The elastic air bladder 2 and the piston mechanism 3 are disposed inside the sprinkler head housing 1, and the spray hole 6 is disposed on the side of the sprinkler head housing 1. The piston mechanism 3 is capable of sliding vertically within the sprinkler head housing 1.

[0038] like Figure 2 As shown, the piston mechanism 3 includes a sliding part 31, a connecting rod 32, and a blocking part 33. One end of the connecting rod 32 is connected to the sliding part 31, and the other end is connected to the blocking part 33. The blocking part 33 is used to block the spray hole 6.

[0039] In this invention, when the inlet water pressure equals the nozzle design water pressure, the piston mechanism 3 is in its initial design position under the combined pressure of the water pressure and the elastic air bladder 2. At this time, the blocking part 33 blocks a portion of the preset spray holes. When the inlet water pressure is greater than the nozzle design water pressure, the piston mechanism 3 moves upward relative to the initial design position, and the blocking part 33 releases at least partially blocking the preset spray holes. When the inlet water pressure is less than the nozzle design water pressure, the piston mechanism 3 moves downward relative to the initial design position, and the blocking part 33 blocks additional spray holes in addition to the preset spray holes.

[0040] In one embodiment of this utility model, the initial pressure of the elastic airbag 2 is set based on the nozzle design pressure. When the incoming water pressure increases or decreases compared to the nozzle design water pressure, the elastic airbag 2 will contract or expand accordingly.

[0041] In one embodiment of this utility model, when the piston mechanism 3 moves up and down, it will block a certain number of nozzles 6, thereby realizing the change of its working number.

[0042] In this invention, when the inlet water pressure equals the nozzle's design water pressure, the piston mechanism 3 remains stable at its initial design position under the combined action of the water pressure, the pressure of the elastic airbag 2, and the weight of the piston mechanism 3 itself. At this time, the blocking part 33 blocks a portion of the preset spray holes 6, and the nozzle's spray range remains stable.

[0043] When the inlet water pressure is greater than the nozzle's design water pressure, the water pressure increases, pushing the blocking part 33 to move upward. The blocking part 33 drives the sliding part 31 to move upward via the connecting rod 32. The sliding part 31 moves upward and compresses the elastic airbag 2. The pressure provided by the elastic airbag 2 increases, eventually reaching a new force balance. At this time, the equilibrium position of the piston mechanism 3 is above the initial design position. At this time, the blocking part 33 releases at least part of the blocked nozzle 6, increasing the effective number of nozzles 6, thereby maintaining the nozzle's spray range.

[0044] When the inlet water pressure is lower than the nozzle's design water pressure, the water pressure decreases, the elastic airbag 2 expands, and pushes the sliding part 31 downward. The sliding part 31 drives the blocking part 33 downward via the connecting rod 32. At this time, the blocking part 33 not only blocks some of the preset spray holes 6, but also blocks additional spray holes 6, reducing the effective number of spray holes 6, thereby maintaining the nozzle's spray range.

[0045] This utility model's garden irrigation sprinkler achieves automatic adjustment of the number of nozzles 6 through the linkage design of the elastic airbag 2 and the piston mechanism 3. When the water pressure changes, the piston mechanism 3 can automatically adjust its position according to the pressure change of the elastic airbag 2, thereby changing the effective number of nozzles 6 and ensuring that the spray range of the sprinkler remains stable. This design not only improves the adaptability of the sprinkler but also simplifies operation, making it suitable for various garden irrigation scenarios.

[0046] In one embodiment of this invention, the nozzles 6 are evenly distributed along the circumference of the nozzle housing 1. This design ensures that the water jet can evenly cover the irrigation area, avoiding irrigation blind spots or over-irrigation.

[0047] In this invention, the nozzles 6 are distributed on the side of the nozzle housing 1. Specifically, the nozzles 6 are arranged in a ring array around the nozzle housing 1, with the opening of each nozzle 6 slightly tilted outward, allowing the water to be sprayed outward at a certain angle, forming a uniform spray effect. The number of nozzles 6 can be adjusted according to the size of the nozzle and irrigation needs, and is usually set in multiple groups to ensure uniform water distribution. The diameter and spacing of the nozzles 6 are also carefully designed. The diameter of the nozzles 6 is usually small to ensure that the water can be sprayed in a mist or fine stream, suitable for the needs of garden irrigation. The uniform spacing between the nozzles 6 avoids the water flow from being too concentrated or dispersed, ensuring uniform water distribution throughout the irrigation area.

[0048] In this invention, inside the nozzle housing 1, the positions of the nozzle holes 6 correspond to the blocking portion 33 of the piston mechanism 3. When the piston mechanism 3 is in its initial design position, the blocking portion 33 blocks part of the nozzle holes 6, reducing the effective number of working nozzle holes 6. When the water pressure changes, the piston mechanism 3 moves up and down, and the blocking portion 33 adjusts its position accordingly, opening or blocking more nozzle holes 6. Through this design, the uniform distribution of the nozzle holes 6 and the linkage adjustment of the piston mechanism 3 ensure that the nozzle maintains a stable irrigation effect under different water pressure conditions. Whether the water pressure increases or decreases, the nozzle can maintain a uniform irrigation coverage area by automatically adjusting the number of working nozzle holes 6.

[0049] like Figure 1As shown, in one embodiment of this utility model, a limiting plate 11 is provided in the nozzle housing 1, forming a receiving cavity 10 in the nozzle housing 1. The limiting plate 11 has a through hole. The elastic airbag 2 and the sliding part 31 are disposed in the receiving cavity 10. The sliding part 31 is capable of sliding vertically within the receiving cavity 10, and the connecting rod 32 passes through the through hole.

[0050] In one embodiment of this utility model, a limiting plate 11 is provided inside the nozzle housing 1. The limiting plate 11 forms a receiving cavity 10 inside the nozzle housing 1. This receiving cavity 10 is used to install and fix the elastic airbag 2 and the sliding part 31, ensuring that they can work normally inside the nozzle housing 1. A through hole is provided on the limiting plate 11. The function of this through hole is to allow the connecting rod 32 to pass through the limiting plate 11, connecting the sliding part 31 and the blocking part 33. The diameter of the through hole is slightly larger than the diameter of the connecting rod 32, ensuring that the connecting rod 32 can move freely without generating excessive friction.

[0051] The sliding part 31 can slide vertically within the receiving cavity 10. The shape and size of the sliding part 31 match the receiving cavity 10 to ensure stability and sealing during the sliding process.

[0052] This design ensures the stable installation and normal operation of the elastic airbag 2 and the sliding part 31 through the structure of the limiting plate 11 and the receiving cavity 10. The up-and-down movement of the sliding part 31 is transmitted to the blocking part 33 through the connecting rod 32, realizing the automatic adjustment of the number of nozzles 6 and ensuring that the nozzles maintain a stable irrigation effect under different water pressure conditions.

[0053] In one embodiment of this utility model, the limiting plate 11 not only forms a receiving cavity 10 in the nozzle housing 1, but also restricts the position of the piston mechanism 3 to prevent the piston mechanism 3 from moving too downward, causing the blocking part 33 to excessively block the nozzle 6 and affect the normal operation of the nozzle.

[0054] In one embodiment of this utility model, a sealing ring is provided inside the through hole to prevent water from entering the accommodating cavity through the through hole.

[0055] like Figure 1 As shown, in one embodiment of this utility model, a spring 4 is sleeved on the connecting rod 32, the upper end of the spring 4 is connected to the sliding part 31, and the lower end is connected to the limiting plate 11.

[0056] In one embodiment of this utility model, when the elastic airbag 2 contracts or expands, it works in conjunction with the spring 4 to enable the piston mechanism 3 to slide up and down.

[0057] In this invention, the spring 4 and the elastic airbag 2 work together to help the piston mechanism 3 slide up and down. When the water pressure changes, the elastic airbag 2 contracts or expands, causing the sliding part 31 to move up and down. The spring 4, through its elastic force, assists the elastic airbag 2 in completing this process, ensuring that the sliding of the piston mechanism 3 is more stable and precise. In this invention, the lower end of the spring 4 is fixed to the limiting plate 11, and the upper end is connected to the sliding part 31. When the elastic airbag 2 expands, the sliding part 31 moves downward, and the spring 4 is compressed, generating a reverse force. When the elastic airbag 2 contracts, the sliding part 31 moves upward, and the spring 4 is stretched, also generating a reverse force. This reverse force helps the piston mechanism 3 respond quickly to changes in water pressure, ensuring that the adjustment of the nozzle 6 is more sensitive.

[0058] In this invention, the spring 4 can maintain the piston mechanism 3 in its initial position when there is no water pressure. When no water enters the nozzle, the pressure of the elastic airbag 2 is zero, and the piston mechanism 3 may fall due to its own weight. The spring 4 provides an upward supporting force through its elasticity, helping the piston mechanism 3 to remain in an initial position and preventing the blocking part 33 from excessively blocking the nozzle 6.

[0059] In this invention, when the water pressure is equal to the design water pressure of the nozzle, the water pressure, the pressure of the elastic airbag 2, the elastic force of the spring 4, and the self-weight of the piston mechanism 3 are balanced. The piston mechanism 3 is located in the initial design position. At this time, the blocking part 33 blocks part of the preset spray hole 6, and the spray range of the nozzle remains stable.

[0060] like Figure 1 As shown, in one embodiment of this utility model, the garden irrigation nozzle that can be automatically adjusted according to water pressure further includes: a corrugated pipe 5, the upper end of which is connected to the limiting plate 11 and the lower end of which is connected to the shielding part 33; the corrugated pipe 5 is used to prevent water from entering the receiving cavity 10 through the through hole.

[0061] In one embodiment of this invention, the deformation of the bellows is matched with the displacement of the piston mechanism. In another embodiment of this invention, when the piston mechanism 3 moves, the bellows can also absorb the displacement of the piston mechanism 3 through deformation.

[0062] In this invention, the bellows 5 is located between the limiting plate 11 and the shielding part 33, forming a sealed barrier that effectively prevents water from entering the receiving cavity 10 through the through hole on the limiting plate 11. This sealing design ensures that the elastic airbag 2 and sliding part 31 inside the receiving cavity 10 are not affected by water flow and maintain normal operation. The bellows 5 is made of flexible material and can expand and contract with the up-and-down movement of the piston mechanism 3. When the piston mechanism 3 moves, the bellows 5 absorbs the displacement of the piston mechanism 3 through deformation, ensuring that the movement of the piston mechanism 3 is not obstructed. This design not only improves the response speed of the nozzle but also reduces mechanical wear and extends the service life of the nozzle. The deformation of the bellows 5 matches the displacement of the piston mechanism 3. When the piston mechanism 3 moves up and down, the bellows 5 can maintain the structural stability of the nozzle through its flexible structure, avoiding loosening or damage to the internal structure of the nozzle due to the movement of the piston mechanism 3.

[0063] like Figure 1 As shown, in one embodiment of the present invention, the garden irrigation nozzle that can be automatically adjusted according to water pressure further includes: a water inlet 9; the water inlet 9 is connected to the bottom of the nozzle housing 1.

[0064] like Figure 1 As shown, in one embodiment of this utility model, a connecting thread 8 is provided at the bottom of the nozzle housing 1, and the water inlet 9 is connected to the nozzle housing 1 through the connecting thread 8. This threaded connection method is not only convenient to install, but also ensures the stability of the connection and prevents water leakage. The size and specifications of the connecting thread 8 can be designed according to actual needs to adapt to water pipes of different specifications.

[0065] like Figure 1 As shown, in one embodiment of this utility model, a filter screen 7 is provided on the water inlet 9. The filter screen 7 is removable and replaceable, and is used to filter impurities in the incoming water.

[0066] As can be seen from the above embodiments, the garden irrigation sprinkler head of this utility model, which can automatically adjust according to water pressure, achieves at least the following beneficial effects:

[0067] 1. This utility model achieves automatic adjustment of the sprinkler head when water pressure fluctuates through the linkage design of the elastic airbag and piston mechanism. When the water pressure changes, the piston mechanism moves up and down, thereby adjusting the effective number of spray holes. This design ensures that the sprinkler head maintains a stable irrigation range under different water pressure conditions, avoiding the uneven irrigation problem caused by water pressure fluctuations in traditional sprinklers.

[0068] 2. In this invention, the nozzles are evenly distributed along the circumference of the nozzle housing, ensuring uniform water spray coverage of the irrigation area. This uniform distribution of nozzles avoids irrigation blind spots or over-irrigation, improving irrigation efficiency. Through the automatic adjustment of the piston mechanism, the effective number of nozzles can be dynamically adjusted according to water pressure changes, ensuring the stability of the irrigation range.

[0069] 3. The overall structural design of this utility model is simple, the connection relationship between the components is clear, and it is easy to manufacture and maintain. The sprinkler head has a compact structure, is easy to install, and is suitable for various garden irrigation scenarios. The synergistic effect between the components ensures the high reliability and long service life of the sprinkler head, reducing the failure rate and maintenance costs.

[0070] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A garden irrigation sprinkler head that automatically adjusts according to water pressure, characterized by, The utility model relates to a shower nozzle, which comprises a nozzle shell, an elastic air bag, a piston mechanism and a spray hole; the elastic air bag and the piston mechanism are arranged inside the nozzle shell, and the spray hole is arranged on the side of the nozzle shell; the piston mechanism can slide in the vertical direction inside the nozzle shell, and the piston mechanism comprises a shielding part; When the water pressure is equal to the design water pressure of the nozzle, the piston mechanism is located at the design initial position under the action of the water pressure and the pressure of the elastic air bag, and at this time, the shielding part shields the preset part of the spray hole; When the water pressure is greater than the design water pressure of the nozzle, the piston mechanism moves upward relative to the design initial position, and at this time, the shielding part releases at least part of the preset part of the spray hole; When the water pressure is less than the design water pressure of the nozzle, the piston mechanism moves downward relative to the design initial position, and at this time, the shielding part shields the preset part of the spray hole and additional spray holes. A limiting plate is arranged in the nozzle shell, a containing cavity is formed in the nozzle shell through the limiting plate, and a through hole is arranged on the limiting plate; the piston mechanism further comprises a sliding part and a connecting rod, one end of the connecting rod is connected with the sliding part, and the other end of the connecting rod is connected with the shielding part; the elastic air bag and the sliding part are arranged in the containing cavity, the sliding part can slide in the vertical direction in the containing cavity, and the connecting rod passes through the through hole.

2. The garden irrigation sprinkler head that automatically adjusts according to water pressure according to claim 1, wherein, A spring is sleeved on the connecting rod, the upper end of the spring is connected with the sliding part, and the lower end of the spring is connected with the limiting plate.

3. The garden irrigation sprinkler head automatically adjustable according to water pressure according to claim 2, characterized in that, Further comprising:

4. The garden watering sprinkler head automatically adjustable according to water pressure according to claim 2 or 3, characterized in that, A bellows, the upper end of the bellows is connected with the limiting plate, and the lower end of the bellows is connected with the shielding part; the bellows is used for preventing water from entering the containing cavity through the through hole. Further comprising:

5. The automatically adjustable garden watering sprinkler according to claim 1, wherein, A water inlet interface; the water inlet interface is connected at the bottom of the nozzle shell. The bottom of the nozzle shell is provided with a connecting thread, and the water inlet interface is connected with the nozzle shell through the connecting thread.

6. The garden watering sprinkler head automatically adjustable according to water pressure according to claim 5, characterized in that, A filter screen is arranged on the water inlet interface.

7. The automatically adjustable garden watering sprinkler according to claim 5, wherein, The deformation amount of the bellows matches the displacement amount of the piston mechanism.

8. The automatically adjustable garden watering sprinkler according to claim 4, wherein, The spray holes are uniformly distributed along the circumference of the nozzle shell.

9. The automatically adjustable garden watering sprinkler according to claim 1, wherein, A sealing ring is arranged in the through hole, which is used for preventing water from entering the containing cavity through the through hole.

10. The automatically adjustable garden watering sprinkler according to claim 2 or 3, wherein, ​

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