Spray head for foam gun and spray gun

Abstract

The utility model discloses a spray header for a foam monitor and a spray gun, relates to the field of fire-fighting devices, and aims to solve the problems that firefighters are easy to be scalded by high temperature or burnt by fire when approaching a fire source and the fire extinguishing efficiency is lower because most of the existing fire-fighting water guns are not provided with water curtain generating devices in the prior art. A plurality of first round holes are communicated between the outer side end face and the interior of the fire-fighting lance spray head in an annular array mode, a first fixing ring is arranged on one side of the middle of the outer side end face of the fire-fighting lance spray head, and a second fixing ring is arranged on the other side of the middle of the outer side end face of the fire-fighting lance spray head. A water curtain generating device is rotationally connected between the first fixing ring and the second fixing ring, a water collecting cavity is formed in the water curtain generating device, and a plurality of second round holes are communicated between the end face of the inner side of the water curtain generating device and the water collecting cavity in an annular array mode; an annular net opening is formed between one side of the outer side end face of the water curtain generating device and the water collecting cavity.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting water guns, in particular to a spray head for foam monitors and spray guns. Background Art

[0002] Fire hoses are water-throwing tools used for firefighting. When connected to a hose, they spray a dense, rich stream of water. They offer advantages such as long range and high water volume. Depending on the type and characteristics of the jet, they can be categorized as direct current, spray, and multi-use. Direct current and spray are the most commonly used.

[0003] For example, application publication number CN 108578950 A, a vertical portable fire-fighting water gun, includes a fire-fighting water gun nozzle, one end of the fire-fighting water gun nozzle is provided with a water pipe connecting buckle, and a water outlet direction control handle is welded to the top of the fire-fighting water gun nozzle, a fire-fighting water gun compass is embedded in one side of the top of the fire-fighting water gun nozzle, and the bottom end of the fire-fighting water gun nozzle is clamped with the upper limb of the telescopic rod, the bottom end of the upper limb of the telescopic rod is nested with the lower limb of the telescopic rod, and the bottom end of the lower limb of the telescopic rod is clamped with a water gun support base, the bottom end of the fire-fighting water gun nozzle of the present invention is provided with a water gun nozzle telescopic bracket, and the bottom end of the water gun nozzle telescopic bracket is provided with a telescopic bracket fixing seat, the water gun nozzle telescopic bracket and the telescopic bracket fixing seat are rotatably connected by a bearing, and at the same time, a base fixing pedal is clamped on one side of the telescopic bracket fixing seat, which has higher stability when firefighters perform fire-fighting work, is also more labor-saving and convenient, and is easy to carry and more practical.

[0004] Most existing fire hoses are not equipped with water curtain generating devices, which makes it easy for firefighters to be scalded or burned by high temperature when approaching the fire source, and the fire extinguishing efficiency is low. Therefore, the market urgently needs to develop a sprinkler head for foam monitors and spray guns to help people solve the existing problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a sprinkler head for foam monitors and spray guns, so as to solve the problem proposed in the above background technology that most existing fire water guns are not equipped with a water curtain generating device, which makes it easy for firefighters to be scalded or burned by high temperature when approaching the fire source, and the fire extinguishing efficiency is low.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a sprinkler head for a foam cannon and a spray gun, comprising a fire water gun sprinkler head, one end of the fire water gun sprinkler head is fixedly connected to a rotary valve, the other end of the rotary valve is fixedly connected to a connecting pipe, a plurality of first circular holes are connected in a ring array between the outer end face and the interior of the fire water gun sprinkler head, a first fixing ring is provided on one side of the middle part of the outer end face of the fire water gun sprinkler head, a second fixing ring is provided on the other side of the middle part of the outer end face of the fire water gun sprinkler head, a water curtain generating device is rotatably connected between the first fixing ring and the second fixing ring, a water collecting chamber is provided inside the water curtain generating device, a plurality of second circular holes are connected in a ring array between the inner end face of the water curtain generating device and the water collecting chamber, and an annular mesh port is provided between one side of the outer end face of the water curtain generating device and the water collecting chamber.

[0007] Preferably, the outer side of the second fixing ring is connected to a limiting ring, the outer end surface of the second fixing ring is provided with an external thread portion, and the inner end surface of the limiting ring is provided with an internal thread portion.

[0008] Preferably, one side of the limiting ring is in contact with one side of the water curtain generating device, and the second fixing ring is fixed to the limiting ring by a threaded connection between an external thread portion and an internal thread portion.

[0009] Preferably, a latch seat is fixedly connected to the middle portion of the upper end of the first fixing ring.

[0010] Preferably, two rectangular limiting members are fixedly connected in an arc array on one side of the middle part of the upper end of the outer end surface of the water curtain generating device, and the rectangular limiting members are provided with rectangular sockets.

[0011] Preferably, the latch seat and the rectangular limiting member are connected via a latch limiting connection.

[0012] Preferably, a sealing ring is provided between the inner end surface of the water curtain generating device and the outer end surface of the fire hose sprinkler head and on both sides of the first circular hole, and a plurality of third circular holes corresponding to the second circular holes are provided on the sealing ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In this utility model, through the setting of a water curtain generating device, a water curtain generating device is rotatably connected between the first fixing ring and the second fixing ring, a water collecting chamber is arranged inside the water curtain generating device, a sealing ring is arranged between the inner end face of the water curtain generating device and the outer end face of the fire hose sprinkler head 1 and on both sides of the first circular hole, a plurality of third circular holes corresponding to the second circular holes are arranged on the sealing ring, when the fire hose sprinkler head is used, the water curtain generating device is rotated to align the first circular hole, the second circular hole and the third circular hole, the fire water inside the fire hose sprinkler head fills the water collecting chamber under the action of pressure and is sprayed out from the annular mesh mouth to form a water curtain, which insulates and cools the firefighters from the fire source, improves the fire extinguishing efficiency of the firefighters, and prevents the firefighters from being burned by high temperature.

[0015] In this utility model, through the setting of the limiting ring, the outer side of the second fixing ring is connected to the limiting ring, one side of the limiting ring is fitted with one side of the water curtain generating device, and the second fixing ring and the limiting ring are threadedly connected and fixed by the external thread part and the internal thread part, so that the water curtain generating device is limited between the first fixing ring and the second fixing ring, and can be rotated. At the same time, the limiting ring and the second fixing ring are separated, and the water curtain generating device can be moved out from the side of the fire water gun sprinkler head, which is convenient for disassembly and maintenance of the water curtain generating device.

[0016] In the utility model, through the setting of the pin, the pin seat and the rectangular limit piece are connected through the pin limit. When the fire hose sprinkler head is in use, the pin seat and the rectangular limit piece are connected through the pin to limit the rotation of the water curtain generating device, so that the water curtain generating device remains stable and does not rotate when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a spray head for a foam monitor and a spray gun according to the present invention;

[0018] Figure 2 This is the main sectional view of the utility model;

[0019] Figure 3 It is a side sectional view of the utility model;

[0020] Figure 4 This is an enlarged view of the detail A of the present utility model;

[0021] Figure 5 This is an enlarged view of the detail B of the present utility model;

[0022] In the figure: 1. Fire hose sprinkler head; 101. Rotary valve; 102. Connecting pipe; 103. First circular hole; 2. First fixing ring; 201. Latch seat; 202. Latch; 3. Second fixing ring; 301. External threaded portion; 302. Limiting ring; 303. Internal threaded portion; 4. Water curtain generating device; 401. Water collecting chamber; 402. Second circular hole; 403. Ring mesh port; 404. Sealing ring; 405. Third circular hole; 5. Rectangular limiting member; 501. Rectangular socket. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] See also Figure 1-5 , the utility model provides an embodiment: a sprinkler head for a foam monitor and a spray gun, comprising a fire water gun sprinkler head 1, one end of the fire water gun sprinkler head 1 is fixedly connected to a rotary valve 101, the other end of the rotary valve 101 is fixedly connected to a connecting pipe 102, a plurality of first circular holes 103 are connected in a ring array between the outer end face and the interior of the fire water gun sprinkler head 1, a first fixing ring 2 is provided on one side of the middle part of the outer end face of the fire water gun sprinkler head 1, a second fixing ring 3 is provided on the other side of the middle part of the outer end face of the fire water gun sprinkler head 1, a water curtain generating device 4 is rotatably connected between the first fixing ring 2 and the second fixing ring 3, a water collecting chamber 401 is provided inside the water curtain generating device 4, a plurality of second circular holes 402 are connected in a ring array between the inner end face of the water curtain generating device 4 and the water collecting chamber 401, and a ring-shaped mesh port 403 is provided between one side of the outer end face of the water curtain generating device 4 and the water collecting chamber 401.

[0025] Furthermore, a limiting ring 302 is connected to the outer side of the second fixing ring 3 . An external thread portion 301 is provided on the outer end surface of the second fixing ring 3 , and an internal thread portion 303 is provided on the inner end surface of the limiting ring 302 .

[0026] Furthermore, one side of the limiting ring 302 is fitted with one side of the water curtain generating device 4, and the second fixing ring 3 and the limiting ring 302 are threadedly connected and fixed by the external thread portion 301 and the internal thread portion 303, so that the water curtain generating device 4 is limited between the first fixing ring 2 and the second fixing ring 3, and can be rotated. At the same time, the limiting ring 302 and the second fixing ring 3 are separated, and the water curtain generating device 4 can be removed from the side of the fire water gun sprinkler head 1, which is convenient for disassembly and maintenance of the water curtain generating device 4.

[0027] Furthermore, a latch seat 201 is fixedly connected to the middle portion of the upper end of the first fixing ring 2 .

[0028] Furthermore, two rectangular limiting members 5 are fixedly connected in an arc array on one side of the middle part of the upper end of the outer end surface of the water curtain generating device 4 , and a rectangular socket 501 is provided on the rectangular limiting member 5 .

[0029] Furthermore, the latch seat 201 and the rectangular limiting member 5 are connected by the latch 202. When the fire hose sprinkler head 1 is in use, the latch seat 201 and the rectangular limiting member 5 are connected by the latch 202 to limit the rotation of the water curtain generating device 4.

[0030] Furthermore, a sealing ring 404 is provided between the inner end face of the water curtain generating device 4 and the outer end face of the fire hose sprinkler head 1 and on both sides of the first circular hole 103. A plurality of third circular holes 405 corresponding to the second circular holes 402 are provided on the sealing ring 404. When the fire hose sprinkler head 1 is in use, the water curtain generating device 4 is rotated to align the first circular hole 103, the second circular hole 402 and the third circular hole 405. The fire water inside the fire hose sprinkler head 1 fills the water collecting chamber 401 under pressure and is sprayed out from the annular mesh port 403 to form a water curtain, which insulates and cools the firefighters from the fire source, improves the fire extinguishing efficiency of the firefighters, and prevents the firefighters from being burned by high temperature.

[0031] Working principle: When in use, when the fire hose sprinkler head 1 is used, the first circular hole 103, the second circular hole 402 and the third circular hole 405 are aligned by rotating the water curtain generating device 4, and the latch seat 201 and the rectangular limiter 5 are connected by the latch 202 to restrict the rotation of the water curtain generating device 4. The fire water inside the fire hose sprinkler head 1 fills the water collecting chamber 401 under pressure and is ejected from the annular mesh port 403 to form a water curtain, which insulates and cools the firefighters from the fire source, thereby improving the fire extinguishing efficiency of the firefighters and preventing them from being burned by high temperatures.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A spray head for a foam monitor and a spray gun, comprising a fire water gun spray head (1), characterized in that: One end of the fire-fighting water gun spray head (1) is fixedly connected to a rotary valve (101), and the other end of the rotary valve (101) is fixedly connected to a connecting pipe (102). A plurality of first circular holes (103) are connected in an annular array between the outer end face and the interior of the fire-fighting water gun spray head (1). A first fixing ring (2) is provided on one side of the middle portion of the outer end face of the fire-fighting water gun spray head (1), and a second fixing ring (3) is provided on the other side of the middle portion of the outer end face of the fire-fighting water gun spray head (1). A water curtain generating device (4) is rotatably connected between the first fixing ring (2) and the second fixing ring (3). A water collecting chamber (401) is provided inside the water curtain generating device (4). A plurality of second circular holes (402) are connected in an annular array between the inner end face of the water curtain generating device (4) and the water collecting chamber (401), and an annular mesh port (403) is provided between one side of the outer end face of the water curtain generating device (4) and the water collecting chamber (401).

2. A spray head for a foam monitor and a spray gun according to claim 1, characterized in that: The outer side of the second fixing ring (3) is connected to a limiting ring (302), an outer end surface of the second fixing ring (3) is provided with an external thread portion (301), and an inner end surface of the limiting ring (302) is provided with an internal thread portion (303).

3. A spray head for a foam monitor and a spray gun according to claim 2, characterized in that: One side of the limiting ring (302) is fitted with one side of the water curtain generating device (4), and the second fixing ring (3) and the limiting ring (302) are threadedly connected and fixed via an external threaded portion (301) and an internal threaded portion (303).

4. A spray head for a foam monitor and a spray gun according to claim 1, characterized in that: A latch seat (201) is fixedly connected to the middle portion of the upper end of the first fixing ring (2).

5. A spray head for a foam monitor and a spray gun according to claim 4, characterized in that: Two rectangular limiting members (5) are fixedly connected in an arc array on one side of the middle portion of the upper end of the outer end surface of the water curtain generating device (4), and a rectangular socket (501) is provided on the rectangular limiting member (5).

6. A spray head for a foam monitor and a spray gun according to claim 5, characterized in that: The latch seat (201) and the rectangular limiting member (5) are connected in a limiting manner via a latch (202).

7. The spray head for a foam monitor and a spray gun according to claim 1, characterized in that: A sealing ring (404) is provided between the inner end surface of the water curtain generating device (4) and the outer end surface of the fire hose spray head (1) and on both sides of the first circular hole (103). The sealing ring (404) is provided with a plurality of third circular holes (405) corresponding to the second circular holes (402).

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