Fire extinguisher with adjustable spraying area

Abstract

The invention discloses a fire extinguisher with adjustable spraying area, comprising a fire extinguisher body, a spray hose and a nozzle, one end of the spray hose is connected to the fire extinguisher body, the other end of the spray hose is connected to the nozzle, a slide groove is arranged on the left wall of the fire extinguisher body, a slider is slidably arranged in the slide groove, the slider can move up and down in the slide groove, two fixing plates are arranged on the slider, the two fixing plates are distributed along the front and rear directions, two ends of a rotating shaft are rotatably arranged on the two fixing plates, the nozzle is arranged vertically, a connecting rod is connected to the side wall of the nozzle, the connecting rod is arranged horizontally, the connecting rod is connected to the rotating shaft, a limiting plate is arranged on the fixing plate, the top wall of the limiting plate contacts the bottom wall of the connecting rod, the distance from the rotating shaft to the left wall of the fire extinguisher body is greater than the length of the connecting rod in the left-right direction, and the distance from the rotating shaft to the left wall of the fire extinguisher body is less than the sum of the length of the connecting rod in the left-right direction and the length of the nozzle in the left-right direction. The device can improve the safety performance of the fire extinguisher.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguishers, and in particular to a fire extinguisher with adjustable spraying area. Background Art

[0002] A fire extinguisher is a portable fire-fighting tool. Chemicals are placed in the fire extinguisher to put out fires. Fire extinguishers are one of the common fire prevention facilities and are stored in public places or places where fires may occur. Different types of fire extinguishers are filled with different ingredients and are designed for different causes of fire. When using a fire extinguisher, you must be cautious to avoid adverse effects that endanger the user's life. The fire extinguishing agent sprayed by the fire extinguisher when in use has a high pressure. If the user does not hold the spray hose connected to the fire extinguisher tightly, the spray hose may be diverted by the spray pressure of the fire extinguishing agent, thereby spraying the fire extinguishing agent toward the user, or the hose may swing and injure the user. In addition, the current fire extinguisher spray hose cannot adjust the spray range according to the size of the fire when spraying the fire extinguishing agent, and its use is very limited. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a fire extinguisher with adjustable spraying area to improve the safety performance of the fire extinguisher.

[0004] A fire extinguisher with adjustable spraying area comprises a fire extinguisher body, a spray hose and a nozzle, one end of the spray hose is connected to the fire extinguisher body, and the other end of the spray hose is connected to the nozzle, a slide groove is arranged on the left wall of the fire extinguisher body, a slider is slidably arranged in the slide groove, the slider can move up and down in the slide groove, two fixed plates are arranged on the slider, the two fixed plates are distributed in the front and rear directions, two ends of a rotating shaft are rotatably arranged on the two fixed plates, the nozzle is arranged vertically, a connecting rod is connected to the side wall of the nozzle, the connecting rod is arranged horizontally, the connecting rod is connected to the rotating shaft, the connecting rod is arranged horizontally, a limiting plate is arranged on the fixed plate, the top wall of the limiting plate is in contact with the bottom wall of the connecting rod, the distance from the rotating shaft to the left wall of the fire extinguisher body is greater than the length of the connecting rod in the left-right direction, and the distance from the rotating shaft to the left wall of the fire extinguisher body is less than the sum of the length of the connecting rod in the left-right direction and the length of the nozzle in the left-right direction.

[0005] Preferably, the length of the connecting rod in the left-right direction is greater than the length of the nozzle in the left-right direction.

[0006] Preferably, the nozzle comprises an inner tube, an outer tube, a first annular plate, a second annular plate and a plurality of injection pipes, the outer tube is sleeved on the inner tube, the outer tube is threadedly connected to the inner tube, the bottom end of the inner tube is connected to the bottom plate, the middle part of the bottom plate is provided with a first injection hole, the bottom plate is provided with a plurality of second injection holes, the bottom ends of the first injection hole and the second injection hole are both connected to the injection pipe, the bottom wall of the first annular plate contacts the top wall of the bottom plate, the first annular plate closes the plurality of second injection holes, the bottom end of the first annular plate is connected to a sliding column, the sliding column movably penetrates the bottom plate, the sliding column is slidingly and sealingly connected to the bottom plate, the bottom end of the outer tube is connected to the second annular plate, the top wall of the second annular plate and the bottom wall of the bottom plate have a gap, the plurality of injection pipes all pass through the middle hole of the second annular plate, the top wall of the second annular plate is provided with a first annular groove, the first annular groove is coaxially arranged with the outer tube, a first annular slider is slidably connected in the first annular groove, and the bottom end of the sliding column is connected to the first annular slider.

[0007] Preferably, two sliding columns are provided, and the two sliding columns are respectively connected to the left part and the right part of the first annular plate.

[0008] Preferably, the injection pipe is conical, and the area of ​​the top end of the injection pipe is smaller than the area of ​​the bottom end of the injection pipe.

[0009] Preferably, the top wall of the first annular plate is overall inclined downward from the direction around the central hole of the first annular plate toward the central hole of the first annular plate.

[0010] Preferably, the plurality of second injection holes are distributed circumferentially.

[0011] Preferably, the plurality of second injection holes are evenly distributed around the circumference of the first injection hole.

[0012] Preferably, a limiting unit is provided on the inner tube and the outer tube, and the limiting unit includes a limiting bolt, a first limiting hole and two second limiting holes. The first limiting hole is provided on the outer circumferential wall of the inner tube, and the second limiting hole is provided on the outer tube. When the bottom wall of the first annular plate contacts the top wall of the bottom plate, the limiting bolt passes through the upper second limiting hole and enters into the first limiting hole. When the top wall of the second annular plate contacts the bottom wall of the bottom plate, the limiting bolt passes through the lower second limiting hole and enters into the first limiting hole.

[0013] The beneficial effects of the present invention are as follows: through the cooperation of various components in the present invention, in the initial state, the nozzle is vertically arranged, the top wall of the limit plate contacts the bottom wall of the connecting rod, and the counterclockwise rotation of the nozzle is limited. The distance from the rotating shaft to the left wall of the fire extinguisher body is set to be less than the sum of the length of the connecting rod in the left and right directions and the length of the nozzle in the left and right directions, and the clockwise rotation amplitude of the nozzle is limited to less than 180 degrees. In this way, the spraying direction of the nozzle is always restricted from being toward the right side. When in use, the staff uses the fire extinguisher from the right side to ensure that the fire extinguishing agent sprayed from the nozzle will not be sprayed toward the staff, thereby improving the safety of the use of the fire extinguisher. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0015] Figure 1 It is a front cross-sectional view of the present invention;

[0016] Figure 2 It is a front cross-sectional view of the nozzle in the present invention.

[0017] In the accompanying drawings, 1-fire extinguisher body, 2-spray hose, 3-nozzle, 4-slide groove, 5-slider, 6-fixed plate, 7-rotating shaft, 8-connecting rod, 9-limiting plate, 31-inner tube, 32-bottom plate, 33-first spray hole, 34-spray tube, 35-first annular plate, 36-second annular plate, 37-sliding column, 38-outer tube, 39-second spray hole. DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0019] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0020] Example 1

[0021] like Figure 1 and Figure 2As shown, in this embodiment, a fire extinguisher with adjustable spraying area is provided, including a fire extinguisher body 1, a spray hose 2 and a nozzle 3, one end of the spray hose 2 is connected to the fire extinguisher body 1, and the other end of the spray hose 2 is connected to the nozzle 3. A slide groove 4 is arranged on the left wall of the fire extinguisher body 1, and a slider 5 is slidably arranged in the slide groove 4. The slider 5 can move up and down in the slide groove 4, and two fixed plates 6 are arranged on the slider 5. The two fixed plates 6 are distributed in the front and rear directions. The two ends of the rotating shaft 7 are rotatably arranged on the two fixed plates 6. The nozzle 3 is vertically arranged, and the side wall of the nozzle 3 is connected with a connecting rod 8, the connecting rod 8 is horizontally arranged, the connecting rod 8 is connected to the rotating shaft 7, and the connecting rod 8 is horizontally arranged. A limiting plate 9 is arranged on the fixing plate 6, and the top wall of the limiting plate 9 contacts the bottom wall of the connecting rod 8. The distance from the rotating shaft 7 to the left wall of the fire extinguisher body 1 is greater than the length of the connecting rod 8 in the left and right directions, and the distance from the rotating shaft 7 to the left wall of the fire extinguisher body 1 is less than the sum of the length of the connecting rod 8 in the left and right directions and the length of the nozzle 3 in the left and right directions.

[0022] In this embodiment, a slide groove 4 and a slider 5 are provided, and the slider 5 can move up and down in the slide groove 4. The fixed plate 6 is connected to the slider 5, and the rotating shaft 7 is provided on the fixed plate 6. The nozzle 3 is connected to the rotating shaft 7 through the connecting rod 8. In this way, the height of the nozzle 3 can be adjusted, so that the nozzle 3 can spray the fire extinguishing agent at different heights of the fire extinguisher body 1. The nozzle 3 is vertically arranged, and the spraying direction of the nozzle 3 is downward. At this time, the top wall of the limit plate 9 contacts the bottom wall of the connecting rod 8, and the nozzle 3 cannot rotate counterclockwise to limit the spraying direction of the nozzle 3. The nozzle 3 can rotate clockwise to adjust the spraying direction of the nozzle 3. In the embodiment of the present invention, the distance between the rotating shaft 7 and the left wall of the fire extinguisher body 1 is greater than the length of the connecting rod 8 in the left and right directions, so that the clockwise rotation angle of the nozzle 3 is as large as possible, and the distance between the rotating shaft 7 and the left wall of the fire extinguisher body 1 is less than the sum of the length of the connecting rod in the left and right directions and the length of the nozzle 3 in the left and right directions, so that the clockwise rotation amplitude of the nozzle 3 is limited to less than 180 degrees, so that the spraying direction of the nozzle 3 is always limited to not be toward the right side. When in use, the staff uses the fire extinguisher from the right side, ensuring that the fire extinguishing agent sprayed by the nozzle 3 will not be sprayed toward the staff, thereby improving the safety of the use of the fire extinguisher. In this embodiment, the length of the connecting rod 8 in the left and right directions is greater than the length of the nozzle 3 in the left and right directions, so that the nozzle 3 can be rotated at least 90 degrees clockwise, so that the clockwise rotation angle of the nozzle 3 is between 90 degrees and 180 degrees, thereby ensuring the angle adjustment ability of the nozzle 3.

[0023] The nozzle 3 in this embodiment includes an inner tube 31, an outer tube 38, a first annular plate 35, a second annular plate 36 and a plurality of injection pipes 34. The outer tube 38 is sleeved on the inner tube 31, and the outer tube 38 is threadedly connected to the inner tube 31. The bottom end of the inner tube 31 is connected to the bottom plate 32, and a first injection hole 33 is opened in the middle of the bottom plate 32. A plurality of second injection holes 39 are opened on the bottom plate 32. The bottom ends of the first injection hole 33 and the second injection hole 39 are both connected to the injection pipe 34. The bottom wall of the first annular plate 35 contacts the top wall of the bottom plate 32, and the first annular plate 35 closes the plurality of second injection holes 39. The bottom end of the first annular plate 35 is connected to a sliding column. 37, the sliding column 37 movably penetrates the bottom plate 32, the sliding column 37 is slidably and sealedly connected to the bottom plate 32, the bottom end of the outer tube 38 is connected to the second annular plate 36, and there is a gap between the top wall of the second annular plate 36 and the bottom wall of the bottom plate 32, and multiple injection pipes 34 all pass through the middle hole of the second annular plate 36, and the top wall of the second annular plate 36 is provided with a first annular groove, and the first annular groove is coaxially arranged with the outer tube 38. A first annular slider is slidably connected in the first annular groove, and the bottom end of the sliding column 37 is connected to the first annular slider, and one end of the specific injection hose 2 is connected to the top end of the inner tube 31, and the connecting rod 8 is connected to the top of the outer circumferential wall of the inner tube 31.

[0024] Current fire extinguishers are unable to adjust the range of the spray according to the size of the fire when spraying fire extinguishing agents, and are very limited in use. When the fire is small, for example, when extinguishing some burning parts, a wide spray range will cause greater damage to the surrounding environment. When the fire is large, a narrow spray range will result in a small coverage area of ​​the fire extinguishing agent, thereby prolonging the burning time of the fire source and reducing the efficiency of fire extinguishing.

[0025] In this embodiment, an inner tube 31, an outer tube 38, a first annular plate 35, a second annular plate 36 and other components are arranged. In the initial state, the bottom wall of the first annular plate 35 contacts the top wall of the bottom plate 32, the first annular plate 35 closes the plurality of second injection holes 39, and the first injection hole 33 is opened. When the fire extinguishing agent is sprayed, the fire extinguishing agent is sprayed from the first injection hole 33, and the spraying range is the smallest at this time. When it is necessary to adjust the spray range of the fire extinguisher, the outer tube 38 is rotated, and the outer tube 38 rotates and moves upward, driving the second annular plate 36 to rotate and move upward. At this time, since the first annular slider is slidably connected to the first annular slide groove, the first annular slider can do not make a circular motion, but only move up and down. The sliding column 37 is connected to the first annular slider to move up and down. The upward movement of the sliding column 37 drives the first annular plate 35 to move upward to open the second spray hole 39, and the fire extinguishing agent is sprayed from the first spray hole 33 and multiple second spray holes 39, thereby expanding the spray range of the fire extinguisher. At the same time, since the inner tube 31 and the outer tube 38 are threadedly connected, the outer tube 38 is fixed. In this way, the spray range of the fire extinguisher can be adjusted according to needs, so that the fire extinguisher can be better used when the fire size is various. The device only needs to rotate the outer tube 38 to adjust the spray range, which is easy to use.

[0026] In this embodiment, two sliding posts 37 are provided, and the two sliding posts 37 are respectively connected to the left and right parts of the first annular plate 35 .

[0027] In this embodiment, the injection pipe 34 is conical, and the area of ​​the top end of the injection pipe 34 is smaller than the area of ​​the bottom end of the injection pipe 34 .

[0028] In this embodiment, the top wall of the first annular plate 35 is tilted downward from the direction around the center hole of the first annular plate 35 to the center hole of the first annular plate 35, so as to reduce the impact force of the fire extinguishing agent on the first annular plate 35 when spraying, and improve the stability of the outer tube 38.

[0029] In this embodiment, the plurality of second injection holes 39 are distributed in a circumferential manner.

[0030] In this embodiment, the plurality of second injection holes 39 are evenly distributed around the circumference of the first injection hole 33 .

[0031] In this embodiment, the inner tube 31 and the outer tube 38 are provided with a limiting unit, which includes a limiting bolt, a first limiting hole and two second limiting holes. The first limiting hole is provided on the outer circumferential wall of the inner tube 31, and the second limiting hole is provided on the outer tube 38. When the bottom wall of the first annular plate 35 contacts the top wall of the bottom plate 32, the limiting bolt passes through the upper second limiting hole and enters the first limiting hole. When the top wall of the second annular plate 36 contacts the bottom wall of the bottom plate 32, the limiting bolt passes through the lower second limiting hole and enters the first limiting hole. In this embodiment, the limiting unit is provided to fix the position of the outer tube 38 in both states, further improving the stability of the control of the outer tube 38.

[0032] The fire extinguishing agent in the fire extinguisher in this embodiment is an environmentally friendly water-based fire extinguishing agent, and its composition includes the following solutions:

[0033] The first option: environmentally friendly foaming agent 1%-30%, C6 series fluorocarbon surfactant 1%-10%, flame retardant 2%-25%, and the rest is deionized water.

[0034] The second option: 2%-23% environmentally friendly foaming agent, 1.5%-6% C6 series fluorocarbon surfactant, 4.5%-15% flame retardant, and the rest is deionized water.

[0035] The third option: 5% environmentally friendly foaming agent, 2% C6 series fluorocarbon surfactant, 10% flame retardant, and the rest is deionized water.

[0036] In this embodiment, the environmentally friendly foaming agent is octyldecyl glucoside, and the flame retardant is ammonium polyphosphate.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A fire extinguisher with adjustable spraying area, characterized in that: The fire extinguisher comprises a fire extinguisher body (1), a spray hose (2) and a nozzle (3), wherein one end of the spray hose (2) is connected to the fire extinguisher body (1), and the other end of the spray hose (2) is connected to the nozzle (3). A slide groove (4) is arranged on the left wall of the fire extinguisher body (1), and a slider (5) is arranged in the slide groove (4) for sliding. The slider (5) can move up and down in the slide groove (4). Two fixed plates (6) are arranged on the slider (5), and the two fixed plates (6) are distributed in the front-back direction. Two ends of the rotating shaft (7) are rotatably arranged on the two fixed plates (6). The nozzle (3) is vertically arranged, the side wall of the nozzle (3) is connected with a connecting rod (8), the connecting rod (8) is horizontally arranged, the connecting rod (8) is connected to the rotating shaft (7), a limiting plate (9) is arranged on the fixing plate (6), the top wall of the limiting plate (9) contacts the bottom wall of the connecting rod (8), the distance from the rotating shaft (7) to the left wall of the fire extinguisher body (1) is greater than the length of the connecting rod (8) in the left-right direction, and the distance from the rotating shaft (7) to the left wall of the fire extinguisher body (1) is less than the sum of the length of the connecting rod (8) in the left-right direction and the length of the nozzle (3) in the left-right direction; The nozzle (3) comprises an inner tube (31), an outer tube (38), a first annular plate (35), a second annular plate (36) and a plurality of injection pipes (34); the outer tube (38) is sleeved on the inner tube (31); the outer tube (38) is threadedly connected to the inner tube (31); the bottom end of the inner tube (31) is connected to a bottom plate (32); a first injection hole (33) is opened in the middle of the bottom plate (32); a plurality of second injection holes (39) are opened on the bottom plate (32); the bottom ends of the first injection hole (33) and the second injection hole (39) are both connected to the injection pipe (34); the bottom wall of the first annular plate (35) contacts the top wall of the bottom plate (32); the first annular plate (35) closes the plurality of second injection holes (39); the bottom end of the first annular plate (35) is A sliding column (37) is connected, the sliding column (37) movably passes through the bottom plate (32), the sliding column (37) and the bottom plate (32) are slidingly sealed, the bottom end of the outer tube (38) is connected to the second annular plate (36), there is a gap between the top wall of the second annular plate (36) and the bottom wall of the bottom plate (32), a plurality of injection pipes (34) all pass through the middle hole of the second annular plate (36), the top wall of the second annular plate (36) is provided with a first annular groove, the first annular groove is coaxially arranged with the outer tube (38), a first annular slider is slidably connected in the first annular groove, the bottom end of the sliding column (37) is connected to the first annular slider, one end of the injection hose (2) is connected to the top end of the inner tube (31), and the connecting rod (8) is connected to the outer circumferential wall of the inner tube (31); The injection pipe (34) is conical, and the area of ​​the top end of the injection pipe (34) is smaller than the area of ​​the bottom end of the injection pipe (34); The top wall of the first annular plate (35) is overall inclined downward from the periphery of the central hole of the first annular plate (35) toward the central hole of the first annular plate (35).

2. A fire extinguisher with adjustable spraying area according to claim 1, characterized in that: The sliding posts (37) are provided in two pieces, and the two sliding posts (37) are respectively connected to the left part and the right part of the first annular plate (35).

3. A fire extinguisher with adjustable spraying area according to claim 1, characterized in that: The length of the connecting rod (8) in the left-right direction is greater than the length of the nozzle (3) in the left-right direction.

4. A fire extinguisher with adjustable spraying area according to claim 1, characterized in that: The plurality of second injection holes (39) are distributed around the circumference.

5. A fire extinguisher with adjustable spraying area according to claim 4, characterized in that: The plurality of second injection holes (39) are evenly distributed around the circumference of the first injection hole (33).

6. A fire extinguisher with adjustable spraying area according to claim 1, characterized in that: The inner tube (31) and the outer tube (38) are provided with a limiting unit, the limiting unit comprising a limiting bolt, a first limiting hole and two second limiting holes, the first limiting hole being provided on the outer circumferential wall of the inner tube (31), the second limiting hole being provided on the outer tube (38), when the bottom wall of the first annular plate (35) contacts the top wall of the bottom plate (32), the limiting bolt passes through the upper second limiting hole and enters into the first limiting hole, and when the top wall of the second annular plate (36) contacts the bottom wall of the bottom plate (32), the limiting bolt passes through the lower second limiting hole and enters into the first limiting hole.

Images