High pressure water spray fire extinguishing nozzle

Abstract

The application discloses a high-pressure water spray fire extinguishing nozzle, which comprises a nozzle seat and multiple vortex generators, one end of the outer side of the nozzle seat is provided with external threads, the other end of the outer side of the nozzle seat is provided with a hexagonal head, and the end of the nozzle seat is provided with a conical surface, five groups of counterbores are uniformly arranged on the conical surface of the nozzle seat, and the counterbores are provided with internal threads; the nozzle is small in size and suitable for indoor installation; the product can atomize water flow for multiple times, the water drop spraying area is greatly increased, and thus, the water consumption is small, and the storage of fire-fighting water is facilitated; the nozzle filter screen is designed on the single vortex generator, impurities in water can be shunted, and the maintenance interval is prolonged; since there is one vortex generator, if a single vortex generator is blocked, the remaining vortex generators can also normally spray, and most functions are ensured to be normal; the main functions of the product are concentrated in the vortex generator, the vortex generator is designed as an independent individual, if damaged, the single vortex generator can be replaced, which is very convenient and can save use cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire extinguishing nozzles, in particular to a high-pressure water spray fire extinguishing nozzle. BACKGROUND

[0002] Since water spray fire extinguishing has replaced the previous halogenated alkane and carbon dioxide fire extinguishing, water spray fire extinguishing has developed rapidly and its application range has gradually expanded. The performance of the nozzle used for water spray has also made great progress. The characteristics of water are better combined with mechanical structure to achieve better performance in limited space. The nozzle used in the water spray system is usually called an atomizing nozzle. It can spray liquid water through high-speed airflow to form fine water droplets, thereby forming a uniform water mist. The atomizing nozzle used in the water spray system is a device that sprays and atomizes liquid through compressed air or other means. The existing high-pressure atomizing nozzle has a simple internal structure, and the number of internal atomizations is small, which leads to a limited spraying area and excessive water consumption. In addition, the blockage of a single vortex generator will affect the spraying effect of other vortex generators. SUMMARY

[0003] The present application aims to provide a high-pressure water spray fire extinguishing nozzle to solve the problems mentioned in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-pressure water spray fire extinguishing nozzle, comprising a nozzle seat and multiple groups of vortex generators, one end of the outer side of the nozzle seat is provided with external threads, the other end of the outer side of the nozzle seat is provided with a hexagonal head, and the end of the nozzle seat is provided with a conical surface, five groups of counterbores are uniformly arranged on the conical surface of the nozzle seat, and the counterbores are provided with internal threads, and an inner hole is formed in the inside of the nozzle seat;

[0005] The vortex generator comprises a vortex core, a vortex seat, an O-shaped sealing ring, a flow director, a toothed ring, and a beaded filter screen. The vortex seat is in a cylindrical structure. One end of the outer side of the vortex seat is provided with threads. An O-ring groove is formed in the middle of the outer side of the vortex seat, and an O-shaped sealing ring is sleeved in the inside of the O-ring groove. A vortex core is arranged in the inside of the vortex seat. A flow director is arranged on the taper hole of the vortex core. A toothed ring is arranged above the flow director, and the toothed ring is an upper and lower inclined outward tooth. A beaded filter screen is arranged above the toothed ring.

[0006] Preferably, a stepped counterbore is formed in the inside of the vortex seat. The vortex core is located at the lowermost part of the stepped counterbore. A taper hole and a small hole are arranged in the middle of the vortex core, and the taper hole and the small hole are circularly arc transitioned.

[0007] Preferably, one end of the flow director is a cone, a small counterbore is formed in the middle of the flow director, a plurality of small-inclination flow channels are connected between the cone and the small counterbore, and the other end of the flow director is a cylindrical structure.

[0008] Preferably, the vortex core, the flow director, the toothed ring and the edge-covered filter screen are arranged in the mounting groove in the vortex seat.

[0009] Preferably, the conical surface is a 70° conical surface.

[0010] Preferably, the toothed ring is an external tooth, the toothed ring is upwardly and downwardly inclined and protruded, and the middle part of the toothed ring is in a circular ring shape and arranged in the middle of the upwardly and downwardly protruded toothed ring.

[0011] Preferably, the top of the vortex seat is edge-treated.

[0012] Preferably, the inner hole is connected with the five groups of counterbores through an inclined hole.

[0013] Preferably, the vortex device is provided with external threads on the outside, and the vortex device and the counterbores are threadedly connected.

[0014] Preferably, the cone is a two-stage conical structure, the small-inclination flow channels are arranged at a first-stage conical angle, and the second-stage conical angle of the flow director overlaps with the conical angle of the vortex core.

[0015] Compared with the prior art, the high-pressure water spray fire extinguishing nozzle has the following beneficial effects: the nozzle is small in size and suitable for indoor installation; the product can spray water flow multiple times, the water droplet spray area is greatly increased, and thus the water consumption is small, and the storage of fire-fighting water is facilitated; the filter screen of the nozzle is designed on a single vortex device, impurities in water can be shunted, and the maintenance interval is prolonged; since there are five vortex devices, if a single vortex device is blocked, the remaining vortex devices can also normally spray, and most functions are ensured to be normal; the main functions of the product are concentrated in the vortex device, the vortex device is designed as an independent individual, if damaged, the single vortex device can be replaced, which is very convenient and also saves use cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a structural schematic view of the present application;

[0017] Figure 2 The figure is a side view of the present application;

[0018] Figure 3 The figure is a structural schematic view of the vortex device of the present application;

[0019] Figure 4 The figure is a structural schematic view of the flow director of the present application.

[0020] In the figure: 1, nozzle seat; 11, conical surface; 12, counterbore; 13, inner hole; 14, inclined hole; 2, vortex generator; 21, vortex core; 22, vortex seat; 23, O-shaped sealing ring; 24, flow director; 241, cone; 242, small counterbore; 243, small inclined flow channel; 25, toothed ring; 26, edge filter. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-4 The present application provides a technical solution: a high-pressure water spray fire extinguishing nozzle, comprising a nozzle seat 1 and a plurality of vortex generators 2, characterized in that: one end of the outer side of the nozzle seat 1 is provided with external threads, the other end of the outer side of the nozzle seat 1 is provided with a hexagonal head, and the end of the nozzle seat 1 is provided with a conical surface 11, five groups of counterbores 12 are uniformly arranged at the conical surface 11 of the nozzle seat 1, and the counterbores 12 are internally threaded, and an inner hole 13 is formed in the inside of the nozzle seat 1.

[0023] The vortex generator 2 comprises a vortex core 21, a vortex seat 22, an O-shaped sealing ring 23, a flow director 24, a toothed ring 25 and an edge filter 26. The vortex seat 22 is a cylindrical structure, one end of the outer side of the vortex seat 22 is provided with threads, an O-ring groove is formed in the middle of the outer side of the vortex seat 22, an O-shaped sealing ring 23 is sleeved in the inside of the O-ring groove, the vortex core 21 is arranged in the inside of the vortex seat 22, the flow director 24 is arranged on the tapered hole of the vortex core 21, the toothed ring 25 is arranged above the flow director 24, the high-pressure water flow is first differentiated and divided into a plurality of small branches, which flow into the inner cavity of the vortex generator 2 at a fixed inclination angle and impact the cylindrical end of the flow director 24 to produce primary atomization. At this moment, the water droplets are relatively large, and the toothed ring 25 is an upper and lower inclined outward tooth, the edge filter 26 is arranged above the toothed ring 25 to ensure clean water and not affect subsequent atomization.

[0024] As a preferred scheme of the present embodiment: a stepped counterbore is formed in the inside of the vortex seat 22, the vortex core 21 is located at the lowermost part of the inside of the stepped counterbore, a tapered hole and a small hole are arranged in the middle of the vortex core 21, and the tapered hole and the small hole are circularly arcuate in transition. The third impact atomization forms a water mist with fine particles which is ejected out through the small hole of the vortex core.

[0025] As a preferred embodiment of the present application, one end of the flow director 24 is a cone 241, a small counterbore 242 is formed in the middle of the flow director 24, a plurality of small inclined flow grooves 243 are connected between the cone 241 and the small counterbore 242, and the other end of the flow director 24 is a cylindrical structure.

[0026] As a preferred embodiment of the present application, the vortex core 21, the flow director 24, the toothed ring 25, and the edge-bound filter screen 26 are arranged in the mounting groove in the vortex seat 22.

[0027] As a preferred embodiment of the present application, the conical surface 11 is a 70° conical surface.

[0028] As a preferred embodiment of the present application, the toothed ring 25 is an external tooth, the toothed ring 25 is upwardly and downwardly inclined and raised, and the middle part of the toothed ring 25 is in a circular ring shape and arranged in the middle of the upwardly and downwardly raised toothed ring 25.

[0029] As a preferred embodiment of the present application, the top of the outer side of the vortex seat 22 is edge-bound.

[0030] As a preferred embodiment of the present application, the inner hole 13 is connected to the five groups of counterbores 12 through the inclined hole 14.

[0031] As a preferred embodiment of the present application, the outer side of the vortex device 2 is provided with external threads, and the vortex device 2 and the counterbores 12 are threadedly connected.

[0032] As a preferred embodiment of the present application, the cone 241 is a two-stage conical angle structure, the small inclined flow grooves 243 are arranged at the first-stage conical angle, the second-stage conical angle of the flow director 24 overlaps the conical angle of the vortex core 21, the small inclined flow grooves 243 can allow the instantaneously increased space to be subjected to secondary differentiation through the small inclined flow grooves 243, to generate secondary atomization, to reduce the water droplets, and the high-pressure small branch streams at this position will be subjected to the first cyclone and respectively enter the small inclined flow grooves 243.

[0033] As shown in FIG. 1, the water sprayed by the five groups of vortex devices 2 is subjected to the first cyclone and then enters the small inclined flow grooves 243. Figure 1 , 3 As shown in FIG. 2, the water sprayed by the five groups of vortex devices 2 is subjected to the first cyclone and then enters the small inclined flow grooves 243.

[0034] As shown in FIG. 3, the water sprayed by the five groups of vortex devices 2 is subjected to the first cyclone and then enters the small inclined flow grooves 243. Figures 1-2 As shown in FIG. 4, after the water mist of the five groups of vortex devices is slid out, the five groups of vortex devices 2 with a 55° angle spray the water mist to produce mutual influence, to be subjected to collision atomization again, to form dense water mist to be sprayed downward again, to cut off the air to cause asphyxiation and extinguish the fire.

[0035] Working principle: the high-pressure water spray fire extinguishing nozzle is connected to the fire water pipe, the nozzle is installed vertically downward, high-pressure water (≥8MPa) passes through the inner hole 13 on the nozzle seat 1, enters the vortex generator 2 through the inclined hole 14, and is filtered by the edge filter 26 to ensure clean water quality and does not affect subsequent atomization;

[0036] The high-pressure water flow is first differentiated by the toothed ring 25, divided into multiple small branches, and flows into the inner cavity of the vortex generator 2 at a fixed inclination angle, impinges on the cylindrical end of the flow guide 24, and produces primary atomization, at which time the water droplets are relatively large;

[0037] Then, the small gap between the flow guide 24 and the vortex seat 22 enters the first-stage taper angle of the flow guide 24, the first-stage taper angle is provided with four inclination small flow grooves 243, the second-stage taper angle of the flow guide 24 overlaps with the taper angle of the vortex core 21, and the inclination small flow grooves 243 can increase the space instantaneously and perform secondary differentiation through the inclination small flow grooves 243 to produce secondary atomization, and the water droplets are reduced, and the high-pressure small branches here will perform first-stage rotational flow and enter the inclination small flow grooves 243 respectively;

[0038] The high-pressure water mist of the inclination small flow grooves 243 enters the internal small sink hole 242 of the flow guide 24 to perform second-stage rotational flow, the high-pressure rotational flow water mist from the small sink hole 242 impinges on the small arc of the vortex core 21 to perform third-stage impingement atomization, and the water mist with relatively fine particles is formed and slides out through the small hole of the vortex core 21;

[0039] When the water mist of the five groups of vortex generators 2 slides out, the five groups of vortex generators 2 with a 55° angle spray out the water mist to produce mutual influence, perform collision atomization again, form dense water mist, and spray downward again to perform air cutting-off and suffocation extinguishing;

[0040] The structure of the nozzle is only suitable for a water-based fire extinguishing system with water pressure ≥8MPa.

[0041] Finally, it should be noted that the above content is only used to illustrate the technical solutions of the present application, and is not a limitation on the protection scope of the present application. Simple modifications or equivalent replacements of the technical solutions of the present application made by those skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.

Claims

1. A high-pressure water spray fire extinguishing nozzle, comprising a nozzle base (1) and multiple sets of vortex generators (2), characterized in that: One end of the nozzle seat (1) is provided with an external thread, the other end of the nozzle seat (1) is provided with a hexagonal head, and the end of the nozzle seat (1) is provided with a conical surface (11). Five sets of countersunk holes (12) are evenly distributed on the conical surface (11) of the nozzle seat (1), and the countersunk holes (12) are provided with internal threads. An inner hole (13) is opened inside the nozzle seat (1). The vortex generator (2) includes a vortex core (21), a vortex seat (22), an O-ring seal (23), a guide (24), a toothed ring (25), and a rimmed filter (26). The vortex seat (22) is a cylindrical structure. One end of the outer side of the vortex seat (22) is threaded. An O-ring groove is opened in the middle of the outer side of the vortex seat (22), and an O-ring seal (23) is fitted inside the O-ring groove. The vortex core (21) is installed inside the vortex seat (22). A guide (24) is installed on the tapered hole of the vortex core (21). A toothed ring (25) is installed above the guide (24), and the toothed ring (25) has external teeth that are tilted and raised. A rimmed filter (26) is installed above the toothed ring (25).

2. The high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The vortex seat (22) has a stepped countersunk hole inside, and the vortex core (21) is located at the bottom inside the stepped countersunk hole. The vortex core (21) has a conical hole and a small hole in the middle, and the conical hole and the small hole are connected by an arc transition.

3. The high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: One end of the flow guide (24) is a cone (241), and a small countersunk hole (242) is provided in the middle of the flow guide (24). The cone (241) and the small countersunk hole (242) are connected by multiple inclined small flow channels (243), and the other end of the flow guide (24) is a cylindrical structure.

4. A high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The vortex core (21), the guide (24), the toothed ring (25), and the edge-sealed filter (26) are all located in the mounting groove inside the vortex seat (22).

5. A high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The conical surface (11) is a 70° conical surface.

6. A high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The toothed ring (25) has external teeth, and the toothed ring (25) is tilted and raised up and down, with a circular shape in the middle and placed in the middle of the up and down.

7. A high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The top of the outer side of the vortex seat (22) is finished with a trim.

8. A high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The inner hole (13) is connected to five sets of countersunk holes (12) through the oblique hole (14).

9. A high-pressure water spray fire extinguishing nozzle according to claim 1, characterized in that: The vortex generator (2) is provided with an external thread on its outer side, and the vortex generator (2) and the countersunk hole (12) are connected by a thread.

10. A high-pressure water spray fire extinguishing nozzle according to claim 3, characterized in that: The cone (241) is a two-stage cone structure, the inclined small flow channel (243) is set at the first-stage cone angle, and the second-stage cone angle of the guide (24) overlaps with the cone angle of the vortex core (21).

Images