A new self-decelerating rotary sprinkler

Abstract

The utility model discloses a new -type self deceleration rotation sprinkling head in the technical field of shower nozzle, including inlet pipe and shower nozzle seat, the shower nozzle seat rotation is connected in the bottom of inlet pipe, the lateral surface of shower nozzle seat is provided with main water spray hole, still include: be equipped with the bulge in the inner chamber bottom of shower nozzle seat, the passage is opened from top surface to down to the bulge, the bottom of shower nozzle seat is opened with the water spray hole of damping, the water outlet direction of water spray hole of damping is opposite setting with main water spray hole water outlet direction, the water inlet of water spray hole of damping is connected with the bottom of passage, the top of passage is connected with fine filter screen, can effectively avoid the fine impurity in the water body of entering into the shower nozzle seat and enter the inside of bulge to block water spray hole of damping, reduce because water spray hole of damping is partially or completely blocked, and lead to the rotation speed of being unable to control shower nozzle in reasonable range, has guaranteed that water spraying is even, does not atomize.

Description

Technical Field

[0001] This utility model relates to the technical field of sprinkler heads, and in particular to a novel self-decelerating rotating sprinkler head. Background Technology

[0002] Traditional rotary sprinkler heads rely on water pressure to rotate, aiming to expand the spraying area. However, in practice, it has been found that the rotation speed of these heads increases rapidly with water pressure. At a working pressure of 0.4 MPa, atomization becomes noticeable, and by 0.5 MPa, it severely impacts spray performance. As pressure rises, atomization worsens, with the high-speed rotation creating a white mist around the nozzle. Most of the sprayed water remains within this mist, preventing it from reaching a wider area. This results in uneven spraying, a smaller spray radius and droplet size, ultimately affecting the sprinkler's fire-fighting effectiveness.

[0003] Existing technology, such as patent publication number CN211835980U, discloses a self-decelerating rotating sprinkler head, including a water inlet pipe, a sprinkler cover, a sprinkler bottom, and spray holes. The water inlet pipe is movably disposed above the sprinkler cover, and the sprinkler bottom is disposed below the sprinkler cover. Spray holes are evenly spaced on the bottom and sides of the sprinkler bottom, and damping spray holes are evenly spaced on the bottom surface of the sprinkler bottom. The beneficial effect of this utility model is that the damping spray holes can generate a reaction force through water pressure, ensuring that the rotating sprinkler head will not rapidly increase its rotation speed when the water pressure increases, controlling the rotation speed of the sprinkler head within a reasonable range. This ensures uniform water spray without atomization, a large spray radius, large water droplets, strong fire penetration, faster fire extinguishing speed, wider applicable space, and broader application range, improving engineering applicability and having significant significance in the field of automatic sprinkler fire extinguishing in large spaces.

[0004] The aforementioned existing patent literature has a flaw: the diameter of the damping spray orifice is usually smaller than that of the main spray orifice, making the damping spray orifice easily clogged by fine impurities in the water (such as silt, algae, and minerals). Once the damping spray orifice is partially or completely blocked, the resulting counterforce weakens or disappears, causing the nozzle to suddenly begin to rotate wildly, which immediately leads to extremely uneven water spray (water droplet atomization, water accumulation near the nozzle). Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a novel self-decelerating rotating sprinkler head, which can effectively prevent small impurities in the water entering the nozzle seat from entering the protrusion and clogging the damping spray holes. This reduces the risk of the sprinkler head's rotation speed being uncontrollable within a reasonable range due to partial or complete blockage of the damping spray holes, thus ensuring uniform water spraying without atomization.

[0007] To solve the above-mentioned technical problems, this utility model provides a novel self-decelerating rotary sprinkler head, which adopts the following technical solution: it includes an inlet pipe and a nozzle seat, the nozzle seat is rotatably connected to the bottom of the inlet pipe, and a main spray hole is provided on the side of the nozzle seat. It also includes: a protrusion at the bottom of the inner cavity of the nozzle seat, the protrusion having a channel extending downwards from its top surface, a damping spray hole at the bottom of the nozzle seat, the outlet direction of the damping spray hole being opposite to the outlet direction of the main spray hole, the inlet of the damping spray hole communicating with the bottom of the channel, and a fine filter screen connected to the top of the channel.

[0008] Optionally, the cross-section of the protrusion is inverted trapezoidal, and the upper surface of the protrusion has an installation groove, in which the fine filter screen is fixed.

[0009] Optionally, the fine filter screen is set horizontally.

[0010] Optionally, the nozzle holder has three main water spray holes evenly spaced on its side, and the damping water spray holes are arranged in a one-to-one correspondence with the main water spray holes.

[0011] Optionally, a support plate is fixed to the inner wall of the water inlet pipe, a rotating shaft is rotatably inserted into the support plate, an impeller is fixedly sleeved on the top end of the rotating shaft, and a cleaning brush is fixedly sleeved on the bottom end of the rotating shaft. The lower surface of the cleaning brush is fitted to the surface of the fine filter screen.

[0012] Optionally, a coarse filter screen is installed at the end of the water inlet pipe away from the nozzle seat.

[0013] In summary, this utility model has at least one of the following beneficial effects:

[0014] This invention, through the setting of a fine filter screen, can effectively prevent small impurities in the water entering the nozzle holder from entering the interior of the protrusion and clogging the damping spray holes. Moreover, the water entering from the inlet pipe will wash against the fine filter screen on the protrusion, flushing the small impurities blocked on the fine filter screen to the outside of the protrusion, and then discharged to the outside of the nozzle holder through the main spray hole. This reduces the risk of the damping spray hole being partially or completely blocked, which could lead to the inability to control the rotation speed of the nozzle within a reasonable range, thus ensuring uniform water spraying and preventing atomization. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This utility model Figure 1 Internal structure diagram;

[0018] Figure 3 This is a schematic diagram of the main water spray hole configuration of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0020] Explanation of reference numerals in the attached diagram: 1. Water inlet pipe; 2. Nozzle holder; 3. Main spray hole; 4. Protrusion; 5. Channel; 6. Damping spray hole; 7. Fine filter screen; 8. Mounting groove; 9. Coarse filter screen; 10. Support plate; 11. Rotating shaft; 12. Impeller; 13. Cleaning brush. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] Reference Figures 1-3 This utility model discloses a novel self-decelerating rotating sprinkler head, including an inlet pipe 1 and a nozzle seat 2. The nozzle seat 2 is rotatably connected to the bottom of the inlet pipe 1. A main spray hole 3 is provided on the side of the nozzle seat 2. It also includes: a protrusion 4 at the bottom of the inner cavity of the nozzle seat 2, a channel 5 opening from the top surface of the protrusion 4 downward, a damping spray hole 6 opening at the bottom of the nozzle seat 2, the outlet direction of the damping spray hole 6 being opposite to the outlet direction of the main spray hole 3, the inlet of the damping spray hole 6 being connected to the bottom of the channel 5, and a fine filter screen 7 being connected to the top of the channel 5.

[0026] By adopting the above structure and setting the fine filter screen 7, it is possible to effectively prevent small impurities in the water entering the nozzle seat 2 from entering the interior of the protrusion 4 and clogging the damping spray hole 6. Moreover, the water entering from the inlet pipe 1 will wash against the fine filter screen 7 on the protrusion 4, washing the small impurities blocked on the fine filter screen 7 to the outside of the protrusion 4, and then discharged to the outside of the nozzle seat 2 with the main spray hole 3. This reduces the weakening or disappearance of the opposite force caused by the partial or complete blockage of the damping spray hole 6, which would prevent the nozzle from being unable to control the rotation speed of the nozzle within a reasonable range when the water pressure increases, thus ensuring uniform water spraying and preventing atomization.

[0027] In detail, in this embodiment, the cross-section of the protrusion 4 is an inverted trapezoidal shape, so that the bottom damping spray hole 6 has a pressure opposite to the water pressure of the main spray hole 3. The upper surface of the protrusion 4 has an installation groove 8, and the fine filter screen 7 is fixed inside the installation groove 8. The installation groove 8 may have screw holes, and the fine filter screen 7 can be fixed inside the installation groove 8 by screws.

[0028] In detail, in this embodiment, the fine filter 7 is arranged horizontally or in an arched shape, so that the small impurities attached to the fine filter 7 can be washed away along the surface of the fine filter 7.

[0029] In detail, in this embodiment, three main water spray holes 3 are equally spaced on the side of the nozzle seat 2, and the damping water spray holes 6 are arranged in a one-to-one correspondence with the main water spray holes 3.

[0030] To avoid clogging of the main water jet 3, the existing method is to install a filter on the pipe connected to the water inlet pipe 1. In this embodiment, the water inlet pipe 1 can also be equipped with a coarse filter screen 9 at the end away from the nozzle seat 2 to filter impurities that are prone to clogging the main water jet 3.

[0031] In use, one end of the inlet pipe 1 is connected to an external water supply pipe. Under water pressure, the external water will be initially filtered through the coarse filter screen 9 and then enter the interior of the nozzle seat 2 through the inlet pipe 1. Part of the water is sprayed out from the main spray hole 3, and the other part of the water passes through the fine filter screen 7 and the channel 5 in the protrusion 4 and is discharged through the damping spray hole 6. Since the outlet direction of the damping spray hole 6 is set opposite to the outlet direction of the main spray hole 3, during the rotation spraying process, the water pressure generates mutually opposing forces, ensuring that the nozzle will not increase its rotation speed rapidly when the water pressure increases, and controlling the rotation speed of the nozzle within a reasonable range.

[0032] By setting the fine filter screen 7, it is possible to effectively prevent small impurities in the water entering the nozzle seat 2 from entering the interior of the protrusion 4 and clogging the damping spray hole 6. Moreover, the water entering from the inlet pipe 1 will wash the fine filter screen 7 on the protrusion 4, washing the small impurities blocked on the fine filter screen 7 to the outside of the protrusion 4, and then discharged to the outside of the nozzle seat 2 through the main spray hole 3.

[0033] Example 2

[0034] Reference Figure 1 and Figure 4 Based on the same concept as in Embodiment 1, this novel self-reducing rotary sprinkler head also includes a support plate 10 fixed to the inner wall of the water inlet pipe 1. A rotating shaft 11 is rotatably inserted into the support plate 10. An impeller 12 is fixedly sleeved on the top of the rotating shaft 11, and a cleaning brush 13 is fixedly sleeved on the bottom of the rotating shaft 11. The lower surface of the cleaning brush 13 is fitted to the surface of the fine filter screen 7. The water entering the water inlet pipe 1 impacts the impeller 12 under pressure, causing it to rotate the rotating shaft 11. This, in turn, causes the cleaning brush 13 to rotate on the surface of the fine filter screen 7, scraping away the scattered impurities on the surface of the fine filter screen 7 and discharging them from the main spray hole 3. This effectively avoids the possibility of small impurities clogging the damping spray hole 6.

[0035] In use, one end of the inlet pipe 1 is connected to an external water supply pipe. Under water pressure, the external water will be initially filtered through the coarse filter screen 9 and then enter the interior of the nozzle seat 2 through the inlet pipe 1. Part of the water is sprayed out from the main spray hole 3, and the other part of the water passes through the fine filter screen 7 and the channel 5 in the protrusion 4 and is discharged through the damping spray hole 6. Since the outlet direction of the damping spray hole 6 is set opposite to the outlet direction of the main spray hole 3, during the rotation spraying process, the water pressure generates mutually opposing forces, ensuring that the nozzle will not increase its rotation speed rapidly when the water pressure increases, and controlling the rotation speed of the nozzle within a reasonable range.

[0036] By setting the fine filter screen 7, it is possible to effectively prevent small impurities in the water entering the nozzle seat 2 from entering the interior of the protrusion 4 and clogging the damping spray hole 6. Moreover, the water entering from the inlet pipe 1 will wash the fine filter screen 7 on the protrusion 4, washing the small impurities blocked on the fine filter screen 7 to the outside of the protrusion 4. At the same time, the water entering the inlet pipe 1 will impact the impeller 12 under pressure, causing it to drive the rotating shaft 11 to rotate. This will drive the cleaning brush 13 to rotate on the surface of the fine filter screen 7, scraping the scattered impurities on the surface of the fine filter screen 7 and discharging them from the main spray hole 3. In this way, the possibility of small impurities clogging the damping spray hole 6 can be effectively avoided.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A novel self-reducing rotating sprinkler head, comprising an inlet pipe (1) and a nozzle seat (2), wherein the nozzle seat (2) is rotatably connected to the bottom of the inlet pipe (1), and a main spray hole (3) is provided on the side of the nozzle seat (2), characterized in that: Also includes: A protrusion (4) is provided at the bottom of the inner cavity of the nozzle seat (2). The protrusion (4) has a channel (5) opening from the top surface downwards. A damping water spray hole (6) is opened at the bottom of the nozzle seat (2). The outlet direction of the damping water spray hole (6) is opposite to the outlet direction of the main water spray hole (3). The inlet of the damping water spray hole (6) is connected to the bottom of the channel (5). A fine filter screen (7) is connected to the top of the channel (5).

2. The novel self-reducing rotating sprinkler head according to claim 1, characterized in that: The cross-section of the protrusion (4) is an inverted trapezoidal shape, and the upper surface of the protrusion (4) has an installation groove (8), and the fine filter screen (7) is fixed inside the installation groove (8).

3. The novel self-reducing rotating sprinkler head according to claim 1, characterized in that: The fine filter (7) is set horizontally.

4. A novel self-reducing rotating sprinkler head according to claim 1, characterized in that: The nozzle seat (2) has three main water spray holes (3) evenly spaced on its side, and the damping water spray hole (6) is arranged in a one-to-one correspondence with the main water spray hole (3).

5. A novel self-reducing rotating sprinkler head according to claim 4, characterized in that: The inner wall of the water inlet pipe (1) is fixed with a support plate (10), and a rotating shaft (11) is rotatably inserted into the support plate (10). An impeller (12) is fixedly sleeved on the top end of the rotating shaft (11), and a cleaning brush (13) is fixedly sleeved on the bottom end of the rotating shaft (11). The lower surface of the cleaning brush (13) is attached to the surface of the fine filter screen (7).

6. A novel self-reducing rotating sprinkler head according to any one of claims 1-5, characterized in that: A coarse filter screen (9) is installed at the end of the water inlet pipe (1) away from the nozzle seat (2).

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