CN211798460U

CN211798460U - Open type water mist spray head and water mist fire extinguishing device

Info

Publication number: CN211798460U
Application number: CN201921850841.6U
Authority: CN
Inventors: 林辉; 李福敏; 颜天佑; 何岗; 钟诗颖; 洪川海; 袁伟灿; 叶其革; 梁振升; 张楠
Original assignee: Guangzhou Electric Power Design Institute Co ltd
Current assignee: Guangzhou Electric Power Design Institute Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-10-30
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to an open water mist nozzle and water mist extinguishing device, open water mist nozzle includes: a nozzle body. The shower nozzle body is equipped with intake antrum, middle part chamber and the atomizing chamber that communicates in proper order. And a plurality of water spray holes are formed in the side wall of the atomization cavity. The caliber d2 of the middle cavity is smaller than the caliber d1 of the water inlet cavity and the caliber d3 of the atomization cavity. Foretell thin water smoke shower nozzle, fire water enters into the atomizing intracavity through intake antrum, middle part chamber to outwards spout through the hole for water spraying. Because the bore d2 of middle part chamber is less than bore d1 of intake antrum and the bore d3 of atomizing chamber, fire water changes pressure twice through the middle part chamber, so can improve the atomizing effect. In addition, atomizing nozzle is replaced through the hole for water spraying on the atomizing chamber, can make open thin water smoke shower nozzle small, simple structure, and then can reduce the processing cost.

Description

Open type water mist spray head and water mist fire extinguishing device

Technical Field

The utility model relates to a fire-fighting article technical field especially relates to an open thin water smoke shower nozzle and thin water smoke extinguishing device.

Background

The open type water mist spray head is a terminal spraying part of a water mist fire extinguishing device, is fixedly installed at the tail end of a system pipe network, is used for putting out A-type, B-type and E-type fire disasters, and is applied to places such as archives, indoor transformers, generator rooms, distribution rooms, computer rooms and the like. A plurality of small atomizing nozzles are arranged on a large mushroom head of a traditional water mist sprayer, so that the water mist sprayer is large in size, complex in structure, multiple in parts and high in assembly difficulty.

Disclosure of Invention

Based on this, it is necessary to overcome the defects of the prior art and provide an open type water mist spray head and a water mist fire extinguishing apparatus with small volume and simple structure, which can reduce the processing cost and improve the atomization effect.

The technical scheme is as follows: an open water mist head comprising: the shower nozzle body, the shower nozzle body is equipped with intake antrum, middle part chamber and the atomizing chamber that communicates in proper order, be equipped with a plurality of hole for water spraying on the lateral wall in atomizing chamber, the bore d2 in middle part chamber is less than the bore d1 of intake antrum and the bore d3 in atomizing chamber.

Foretell thin water smoke shower nozzle, fire water enters into the atomizing intracavity through intake antrum, middle part chamber to outwards spout through the hole for water spraying. Because the bore d2 of middle part chamber is less than bore d1 of intake antrum and the bore d3 of atomizing chamber, fire water changes pressure twice through the middle part chamber, so can improve the atomizing effect. In addition, atomizing nozzle is replaced through the hole for water spraying on the atomizing chamber, can make open thin water smoke shower nozzle small, simple structure, and then can reduce the processing cost.

In one embodiment, the water spray hole comprises a first hole section and a second hole section which are communicated with each other, the hole diameter of the first hole section is smaller than that of the second hole section, and the first hole section is closer to the center of the atomization cavity relative to the second hole section.

In one embodiment, the side wall of the atomizing cavity is a hemispherical surface; the water spray holes are uniformly arranged on the hemispherical surface at intervals.

In one embodiment, the caliber d2 of the middle cavity is 65-85% of the caliber d1 of the water inlet cavity; the caliber d3 of the atomizing cavity is smaller than the caliber d1 of the water inlet cavity.

In one of them embodiment, open water mist nozzle still including set up the atomizing chamber with filter between the intake antrum, filter and include the installation department and connect filter screen on the installation department, be equipped with the passageway on the installation department in order to form middle part chamber, the filter screen with middle part chamber corresponds the setting.

In one of them embodiment, the installation department is more than two, the installation department is the stainless steel ring, more than two the installation department overlaps the cooperation and welded connection, filter screen welded fastening is two between the installation department.

In one embodiment, the water spraying body comprises a tube body and a hemispherical cover body, the hemispherical cover body is connected with one end of the tube body, the filter element is arranged in the tube body and is abutted against the hemispherical cover body, the tube of the tube body forms the water inlet cavity, and the hemispherical cover body forms the atomization cavity.

In one embodiment, the open type water mist spray head further comprises a retainer ring, the retainer ring is clamped and installed in the pipeline of the pipe body, and the retainer ring is in interference fit with one side of the filter member away from the hemispherical cover body; the inner diameter of the retainer ring corresponds to the inner diameter of the channel on the mounting part; the retainer ring is an elastic retainer ring.

In one embodiment, the filter holes of the filter screen have a diameter less than 80% of the diameter of the water spray holes.

A water mist fire extinguishing device comprises the open type water mist spray head.

Above-mentioned thin water smoke extinguishing device owing to include open thin water smoke shower nozzle, its technical effect by open thin water smoke shower nozzle bring, with open thin water smoke shower nozzle's technical effect the same, do not give unnecessary details.

Drawings

Fig. 1 is a schematic axial sectional view of an open water mist head according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an open water mist nozzle according to an embodiment of the present invention;

FIG. 3 is a schematic top view of an open water mist head according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a water spray hole of an open type water mist spray head according to an embodiment of the present invention.

Reference numerals:

10. the nozzle body, 11, intake antrum, 12, middle part chamber, 13, atomizing chamber, 14, hole for water spraying, 141, first hole section, 142, second hole section, 15, body, 16, hemisphere lid, 17, hexagonal face, 20, filter, 30, retaining ring.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

In one embodiment, referring to fig. 1 and 2, an open water mist head comprises: a spray head body 10. The nozzle body 10 is provided with a water inlet cavity 11, a middle cavity 12 and an atomizing cavity 13 which are sequentially communicated. The side wall of the atomizing cavity 13 is provided with a plurality of water spray holes 14. The caliber d2 of the middle cavity 12 is smaller than the caliber d1 of the water inlet cavity 11 and the caliber d3 of the atomizing cavity 13.

In the open type water mist nozzle, fire water enters the atomizing cavity 13 through the water inlet cavity 11 and the middle cavity 12 and is sprayed out through the water spraying holes 14. Because the caliber d2 of the middle cavity 12 is smaller than the caliber d1 of the water inlet cavity 11 and the caliber d3 of the atomizing cavity 13, the fire water changes the pressure twice through the middle cavity 12, so that the atomizing effect can be improved. In addition, the atomizing nozzle is replaced by the water spray hole 14 on the atomizing cavity 13, so that the open type water mist spray head is small in size and simple in structure, and further the processing cost can be reduced.

Further, referring to fig. 1 and 4, the water spraying hole 14 includes a first hole section 141 and a second hole section 142 which are communicated with each other. The aperture diameter of the first orifice segment 141 is smaller than the aperture diameter of the second orifice segment 142, and the first orifice segment 141 is closer to the center of the atomizing chamber 13 than the second orifice segment 142. Thus, jet atomization can be facilitated.

Further, referring to fig. 1 to 3, the side wall of the atomizing chamber 13 is a hemispherical surface. The water jetting holes 14 are arranged on the hemispherical surface at regular intervals. Thus, jet atomization is facilitated.

Generally, the impact force of water mist particles generated by a traditional water mist spray head in a rotary centrifugal atomization mode is poor, the installation height is not too high, and particularly when the water pressure is insufficient, the atomization effect can be obviously reduced, and the fire extinguishing capability is influenced.

In one embodiment, referring to fig. 1 and 2 again, the caliber d2 of the middle chamber 12 is 65% to 85% of the caliber d1 of the inlet chamber 11; the caliber d3 of the atomizing cavity 13 is smaller than the caliber d1 of the water inlet cavity 11. Thus, the water pressure in the atomizing chamber 13 entering the water inlet chamber 11 can be increased, and the atomization effect of the water spray holes 14 on the atomizing chamber 13 is facilitated. Compared with a spiral atomizing nozzle, the open type water mist nozzle has stronger impact force, can play a better fire extinguishing role when the installation height is higher, and is suitable for extinguishing fire in a large space.

The aperture d3 of the atomizing chamber 13 refers to the aperture of the atomizing chamber 13 near the opening of the middle chamber 12.

Furthermore, the open type water mist spray head further comprises a filtering member 20 arranged between the atomizing cavity 13 and the water inlet cavity 11. Filter 20 includes the installation department and connects filter screen on the installation department, be equipped with the passageway on the installation department in order to form middle part chamber 12, the filter screen with middle part chamber 12 corresponds the setting.

Further, the installation department is more than two, the installation department is the stainless steel ring, more than two the installation department overlaps to establish cooperation and welded connection, filter screen welded fastening is two between the installation department. Specifically, the two mounting portions are formed by butt welding.

Further, the sprinkler body includes a tube body 15 and a hemispherical cover 16. The hemispherical cover body 16 is connected to one end of the tube body 15, the filter member 20 is disposed in the tube body 15 and is abutted against the hemispherical cover body 16, the water inlet cavity 11 is formed by the tube of the tube body 15, and the atomizing cavity 13 is formed by the hemispherical cover body 16.

Further, the open type water mist spray head also comprises a baffle 30. The retainer ring 30 is clamped and installed in the pipeline of the pipe body 15, and the retainer ring 30 is in interference fit with one side of the filtering piece 20 far away from the hemispherical cover body 16. The inner diameter of the collar 30 corresponds to the inner diameter of the passage in the mounting portion. The retainer ring 30 is a circlip 30. So, retaining ring 30 can be fixed filtering piece 20 in the water spray body, filters piece 20 easy dismounting. In addition, the baffle 30 does not affect the atomization effect of the filter screen.

Further, the aperture of the filtering holes of the filter screen is less than 80% of the aperture of the water spray holes 14. Therefore, the better atomization effect of the filter screen can be ensured. Specifically, the aperture of the filtering holes of the filter screen is less than 80% of the aperture of the first hole section 141.

In one embodiment, a water mist fire suppression device comprises the open type water mist spray head of any one of the embodiments.

In addition, in order to facilitate the fixed installation of the closed water mist spray head at the tail end of the system pipe network, the inner side wall of the water inlet cavity 11 is provided with threads. In addition, in order to facilitate the rotation of the head body 10, a hexagonal surface 17 is provided on the outer sidewall of the head body 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An open water mist head, comprising:

the shower nozzle body, the shower nozzle body is equipped with intake antrum, middle part chamber and the atomizing chamber that communicates in proper order, be equipped with a plurality of hole for water spraying on the lateral wall in atomizing chamber, the bore d2 in middle part chamber is less than the bore d1 of intake antrum and the bore d3 in atomizing chamber.

2. The open water mist head of claim 1, wherein the water jet comprises a first orifice section and a second orifice section communicating with each other, the first orifice section having a smaller pore diameter than the second orifice section, the first orifice section being closer to the center of the atomizing chamber than the second orifice section.

3. The open water mist head according to claim 1, wherein the side walls of the atomizing chamber are hemispherical surfaces; the water spray holes are uniformly arranged on the hemispherical surface at intervals.

4. The open water mist head according to claim 1, wherein the bore d2 of the middle chamber is 65-85% of the bore d1 of the inlet chamber; the caliber d3 of the atomizing cavity is smaller than the caliber d1 of the water inlet cavity.

5. The open water mist sprayer according to claim 1, further comprising a filter member disposed between the atomizing chamber and the water inlet chamber, wherein the filter member comprises an installation portion and a filter screen connected to the installation portion, the installation portion is provided with a passage to form the middle chamber, and the filter screen corresponds to the middle chamber.

6. The open water mist sprayer according to claim 5, wherein the number of the mounting parts is two or more, the mounting parts are stainless steel rings, the two or more mounting parts are overlapped, matched and welded and connected, and the filter screen is welded and fixed between the two mounting parts.

7. The open water mist head of claim 5, wherein the water spraying body comprises a tube and a hemispherical cover, the hemispherical cover is connected to one end of the tube, the filter is disposed in the tube and abuts against the hemispherical cover, the tube of the tube forms the inlet chamber, and the hemispherical cover forms the atomizing chamber.

8. The open water mist head of claim 7, further comprising a retainer ring, wherein the retainer ring is snap-fitted into the conduit of the housing, and the retainer ring is in interference fit with a side of the filter member away from the hemispherical cover; the inner diameter of the retainer ring corresponds to the inner diameter of the channel on the mounting part; the retainer ring is an elastic retainer ring.

9. The open water mist head according to any one of claims 5 to 8, wherein the filter holes of the screen have a diameter of less than 80% of the diameter of the water spray holes.

10. A water mist fire extinguishing apparatus, characterized by comprising an open water mist head according to any one of claims 1 to 9.