Telescopic impingement water mist nozzle

Abstract

This utility model relates to the field of fire-fighting equipment technology, specifically to a telescopic impact-type fine water mist nozzle, including a nozzle body, a telescopic rod, a nozzle, and a hook-shaped striker. The nozzle body has a through-hole, and the telescopic rod is slidably installed in the through-hole with limited stroke. The nozzle is fixed to the end of the telescopic rod and connects to the hollow channel of the telescopic rod. One end of the striker is fixedly connected to the nozzle, and the other end of the striker is aligned with the nozzle opening. A dust cap is provided at the end of the nozzle body to surround the striker. A compression spring is provided in the through-hole to apply force to the telescopic rod, keeping the telescopic rod in a retracted state. An external water source can overcome the force of the compression spring and push the telescopic rod to move, causing the striker to push open the dust cap and extend out of the nozzle body. Compared with the prior art, this design avoids the failure of lifting and lowering during operation due to impurities, effectively protects the nozzle from external impacts, prevents deformation of the striker, and ensures fire extinguishing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, specifically to a telescopic impact fine water mist nozzle, which is suitable for complex scenarios such as high-rise buildings, underground spaces, and industrial pipelines. Background Technology

[0002] An atomizing nozzle is a device that atomizes liquid and sprays it out, suspending it evenly in the air. For example, Chinese patent document CN205182981U discloses a needle-type spray nozzle device, which includes a nozzle body with a flow channel in the center. The flow channel is composed of a main cylindrical cavity, a frustum-shaped cavity, a narrow-necked cylindrical cavity, and an inverted frustum-shaped top cavity connected end-to-end. A filter is connected to the bottom of the main cylindrical cavity in the flow channel. A nozzle is located in the center of the upper surface of the nozzle body, communicating with the top of the flow channel, and a spray plate is disposed inside the nozzle. An inverted U-shaped needle is disposed on the upper surface of the nozzle body, with the needle tip positioned directly above the spray hole in the center of the spray plate. This design uses a top-mounted embedded structure for the spray plate, directly mounting it on the nozzle body and eliminating internal embeddings in the flow path, resulting in a smoother flow channel. It has advantages such as simple structure, reduced components, low cost, significantly improved spray effect, and reduced nozzle clogging.

[0003] Existing striker nozzles have exposed strikers that are easily deformed by unexpected impacts, affecting their fire extinguishing effectiveness. Summary of the Invention

[0004] In view of the above-mentioned technical problems, the present invention provides a telescopic impact fine water mist nozzle.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A telescopic impact fine water mist nozzle is provided, including a nozzle body, a telescopic rod, a nozzle and a hook-shaped impact pin. The nozzle body is provided with a receiving hole, and the telescopic rod is slidably installed in the receiving hole with a limited stroke.

[0007] The nozzle is fixed to the end of the telescopic rod and connects to the hollow channel in the telescopic rod; one end of the firing pin is fixedly connected to the nozzle, and the other end of the firing pin is separated and aligned with the opening of the nozzle;

[0008] The nozzle body has a dust cap at the end that surrounds the firing pin;

[0009] The receiving hole is equipped with a compression spring that applies force to the telescopic rod to keep the telescopic rod in a retracted state; the external water source can overcome the force of the compression spring and push the telescopic rod to move, so that the firing pin pushes open the dust cap and extends out of the nozzle body.

[0010] Specifically, the end of the firing pin's aligned nozzle opening is stepped and conical.

[0011] Specifically, the sidewall of the receiving hole is provided with an annular limiting protrusion, thereby dividing the receiving hole into an upper section and a lower section. The telescopic rod passes through the upper section and the lower section, and a stop step is provided on the outside of the telescopic rod to limit the downward movement of the telescopic rod. The nozzle and the firing pin are located in the lower section.

[0012] Specifically, a sealing ring is provided at the stop step to seal between the telescopic rod and the limiting protrusion when the telescopic rod is extended.

[0013] Specifically, the telescopic rod has an annular blocking part on the outside, and a compression spring is located in the upper hole section and sleeved on the outside of the telescopic rod. One end of the compression spring abuts against the limiting protrusion, and the other end of the compression spring abuts against the blocking part.

[0014] Specifically, the blocking part is provided with an annular guide pad, which abuts against the side wall of the receiving hole, and the guide pad and the side wall of the receiving hole are not sealed.

[0015] Specifically, the end of the telescopic rod is threaded with a nut, which presses the guide pad tightly.

[0016] Specifically, a filter screen is installed at the water inlet end of the nozzle body.

[0017] Specifically, the dust cap and the receiving hole are interference-fitted.

[0018] Specifically, the water inlet end of the nozzle body is provided with a pipe thread, and / or: the nozzle and the telescopic rod are threaded together.

[0019] The beneficial effects of this utility model are:

[0020] This utility model discloses a telescopic impact-type fine water mist nozzle. When a fire occurs, an external water source supplies water to the inlet of the nozzle body. The water flows through the nozzle at the end of the telescopic rod, and the water pressure forces open the dust cap while simultaneously ejecting water from the nozzle. The water jet impacts the impact pin and spreads, breaking into uniform droplets under the influence of air resistance and surface tension. Compared with existing technologies, this purely mechanical structure is simple in design and requires no external force interference, operating solely on water pressure. The dustproof design prevents impurities from causing lifting and lowering failures during operation. It effectively protects the nozzle from external impacts, preventing deformation of the impact pin and ensuring fire extinguishing efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0022] Figure 1This is a structural schematic diagram of a telescopic impact-type fine water mist nozzle in one of the embodiments.

[0023] Figure 2 This is an exploded view of a telescopic impact-type fine water mist nozzle in one of the embodiments.

[0024] Figure 3 This is a cross-sectional view of a telescopic impact-type fine water mist nozzle in one of the embodiments.

[0025] Figure 4 This is a perspective sectional view of a telescopic impact-type fine water mist nozzle in one embodiment, wherein the end structure of the impact pin is simplified.

[0026] Figure 5 This is a schematic diagram of the usage state of a telescopic impact-type fine water mist nozzle in the embodiment, with the compression spring hidden.

[0027] Figure label:

[0028] Nozzle body 1, receiving hole 11, upper hole section 12, lower hole section 13, limiting protrusion 14;

[0029] Telescopic rod 2, stop step 21, blocking part 22;

[0030] 3. Nozzle; 4. Impact pin; 5. Dust cap; 6. Compression spring; 7. Sealing ring; 8. Guide pad; 9. Nut; 10. Filter screen. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] This embodiment provides a telescopic impact-type fine water mist nozzle, such as... Figures 1 to 5 As shown, the nozzle includes a nozzle body 1, a telescopic rod 2, a nozzle 3, and a hook-shaped striking pin 4. The nozzle body 1 has a through-hole 11. The telescopic rod 2 is slidably installed in the through-hole 11, and the stroke of the telescopic rod 2 is limited. The nozzle 3 is fixed to the lower end of the telescopic rod 2 and connects to the hollow channel in the telescopic rod 2. One end of the striking pin 4 is fixedly connected to the nozzle 3, and the other end of the striking pin 4 is aligned with the opening of the nozzle 3. The lower end of the nozzle body 1 is provided with a dust cap 5 surrounding the striking pin 4. The dust cap 5 and the through-hole 11 are interference-fitted to allow external force to push the dust cap 5 open.

[0033] In this embodiment, a compression spring 6 is provided inside the receiving hole 11 to apply force to the telescopic rod 2, so that the telescopic rod 2 remains as described above. Figure 3In the retracted state shown, the striker 4 remains within the receiving hole 11 of the nozzle body 1 and is surrounded by the dust cap 5. During use, external water flows in from the upper end of the nozzle body 1, which, on the one hand, overcomes the force of the compression spring 6 and pushes the telescopic rod 2 to move, so that the striker 4 is in its retracted state. Figure 5 As shown, the dust cap 5 is pushed open and extends beyond the nozzle body 1. On the other hand, the water source is sprayed out from the nozzle 3 through the telescopic rod 2 and impacts the end of the striker 4 to disperse.

[0034] In this embodiment, as Figure 3 The end of the nozzle 3 opening of the firing pin 4 shown is a stepped cone, that is, multiple cones with varying outer diameters.

[0035] In this embodiment, an annular limiting protrusion 14 is provided on the side wall of the receiving hole 11, thereby dividing the receiving hole 11 into an upper hole section 12 and a lower hole section 13. The telescopic rod 2 passes through the upper hole section 12 and the lower hole section 13, and a stop step 21 is provided on the outer side of the telescopic rod 2 to limit the downward movement of the telescopic rod 2. The nozzle 3 and the firing pin 4 are located in the lower hole section 13. A sealing ring 7 is provided at the stop step 21 to seal between the telescopic rod 2 and the limiting protrusion 14 when the telescopic rod 2 is extended.

[0036] In this embodiment, an annular blocking part 22 is provided on the outer side of the telescopic rod 2. The compression spring 6 is located in the upper hole section 12 and sleeved on the outer side of the telescopic rod 2. One end of the compression spring 6 abuts against the limiting protrusion 14, and the other end of the compression spring 6 abuts against the blocking part 22. The blocking part 22 is provided with an annular guide pad 8, which abuts against the side wall of the receiving hole 11. The guide pad 8 and the side wall of the receiving hole 11 are not sealed, so that the gas in the receiving hole 11 can be discharged during the downward movement of the telescopic rod 2.

[0037] Specifically, the end of the telescopic rod 2 is threaded with a nut 9, which presses the guide pad 8 tightly for easy installation.

[0038] Specifically, a semi-circular filter screen 10 is provided at the water inlet end of the nozzle body 1.

[0039] Specifically, the water inlet end of the nozzle body 1 is provided with a pipe thread, and the nozzle 3 is threadedly connected to the telescopic rod 2.

[0040] The nozzle of this embodiment is suitable for complex scenarios such as high-rise buildings, underground spaces, and industrial pipelines. It achieves atomization by optimizing the geometry and impact dynamics of the impact pin 4 and is a nozzle device that does not rely on a swirl channel. It features a simplified structure, strong anti-clogging ability, and high atomization stability.

[0041] A striking pin 4 is designed on nozzle 3, with a stepped cone-shaped front end (designed according to different spray angles). Upon impact, the water flow naturally disperses and breaks up. A self-cleaning gap is provided between the striking pin 4 and the nozzle, allowing large particles to pass directly without jamming. The telescopic structure design effectively protects the nozzle from deformation caused by external impacts, thus maintaining fire extinguishing efficiency. In practice, different spray angles can be selected depending on the installation location, such as 30 degrees, 60 degrees, and 90 degrees.

[0042] This technology differs from traditional impact nozzles, relying solely on the water pressure in the pipeline to complete its lifting and lowering motion. This design effectively solves the shortcomings of traditional nozzles, resulting in the following improvements:

[0043] 1) Purely mechanical structure, simple design, no external force interference required, works by water pressure.

[0044] 2) Waterproof and dustproof design to prevent lifting failure due to impurities during operation.

[0045] 3) The 4-type impact pin design replaces the swirl channel with a stepped conical impact pin, which uses geometric diffusion to achieve non-swirling atomization and increases the structural life by more than 2 times.

[0046] 4) The self-cleaning gap design allows impurities ≤1mm to pass through, and its anti-clogging performance is far superior to that of vortex nozzles.

[0047] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0048] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0049] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A telescopic impact-type fine water mist nozzle, characterized in that: It includes a nozzle body (1), a telescopic rod (2), a nozzle (3) and a hook-shaped striking pin (4). The nozzle body (1) is provided with a receiving hole (11) through it, and the telescopic rod (2) is slidably installed in the receiving hole (11) with a limited stroke. The nozzle (3) is fixed to the end of the telescopic rod (2) and connects to the hollow channel in the telescopic rod (2); one end of the firing pin (4) is fixedly connected to the nozzle (3), and the other end of the firing pin (4) is separated and aligned with the opening of the nozzle (3); The nozzle body (1) is provided with a dust cap (5) that surrounds the firing pin (4) at the end; The receiving hole (11) is equipped with a compression spring (6) that applies force to the telescopic rod (2) so that the telescopic rod (2) remains in a retracted state; the external water source can overcome the force of the compression spring (6) and push the telescopic rod (2) to move so that the firing pin (4) pushes open the dust cap (5) and extends out of the nozzle body (1).

2. The telescopic impact fine water mist nozzle according to claim 1, characterized in that: The end of the nozzle (3) opening of the firing pin (4) is stepped cone-shaped.

3. The telescopic impact fine water mist nozzle according to claim 1, characterized in that: The sidewall of the receiving hole (11) is provided with an annular limiting protrusion (14), thereby dividing the receiving hole (11) into an upper hole section (12) and a lower hole section (13). The telescopic rod (2) passes through the upper hole section (12) and the lower hole section (13), and a stop step (21) is provided on the outside of the telescopic rod (2) to limit the downward movement of the telescopic rod (2). The nozzle (3) and the firing pin (4) are located in the lower hole section (13).

4. A telescopic impact-type fine water mist nozzle according to claim 3, characterized in that: A sealing ring (7) is provided at the stop step (21) to seal between the telescopic rod (2) and the limiting protrusion (14) when the telescopic rod (2) is extended.

5. A telescopic impact-type fine water mist nozzle according to claim 3, characterized in that: The telescopic rod (2) has an annular blocking part (22) on its outer side. The compression spring (6) is located in the upper hole section (12) and is sleeved on the outer side of the telescopic rod (2). One end of the compression spring (6) abuts against the limiting protrusion (14), and the other end of the compression spring (6) abuts against the blocking part (22).

6. A telescopic impact-type fine water mist nozzle according to claim 5, characterized in that: The blocking part (22) is provided with an annular guide pad (8), which abuts against the side wall of the receiving hole (11), and the guide pad (8) and the side wall of the receiving hole (11) are not sealed.

7. A telescopic impact-type fine water mist nozzle according to claim 6, characterized in that: The end of the telescopic rod (2) is threaded with a nut (9) to press the guide pad (8) tight.

8. A telescopic impact-type fine water mist nozzle according to claim 1, characterized in that: A filter screen (10) is provided at the water inlet end of the nozzle body (1).

9. A telescopic impact-type fine water mist nozzle according to claim 1, characterized in that: The dust cap (5) and the receiving hole (11) are interference fit with each other.

10. A telescopic impact-type fine water mist nozzle according to claim 1, characterized in that: The nozzle body (1) has a pipe thread at the water inlet end, and / or the nozzle (3) is threadedly connected to the telescopic rod (2).

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