Fire extinguisher with pressure compensation function

Abstract

The invention discloses a fire extinguisher with a pressure compensation function, and relates to the technical field of fire extinguishers, the fire extinguisher comprises the fire extinguisher, the upper part of the fire extinguisher is fixedly connected with a fixed cylinder in a penetrating manner, the fixed cylinder is internally and fixedly connected with a first fixed frame, the first fixed frame is internally provided with a cavity, and the first fixed frame is fixedly connected with a one-way valve; a high-pressure gas cylinder is placed in the fixing barrel and inserted into the first fixing frame, a second fixing frame is fixedly connected into the fixing barrel, and the first fixing frame is in sliding connection with a gas guide needle used for puncturing a seal of the high-pressure gas cylinder. When the pressure in the fire extinguisher bottle is reduced, the rotating ring rotates to drive the gas guide needle to pierce into the high-pressure gas bottle, so that the effect of automatically compensating the gas pressure when the gas in the fire extinguisher is insufficient is realized, and the stability in the fire extinguisher bottle is ensured; and the situation that the spraying effect is reduced due to the fact that the pressure is unstable in the later half-process using process is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishers, and in particular to a fire extinguisher with a pressure compensation function. Background Art

[0002] As a common and indispensable fire-fighting item in daily life, dry powder fire extinguishers have the advantages of wide range of use and easy portability, playing a vital role in ensuring property safety.

[0003] Among the existing dry powder fire extinguishers, a common dry powder fire extinguisher uses internal high-pressure gas to press out dry powder, which has the characteristics of simple structure and easy use. However, during use, as the dry powder fire extinguisher is used for a longer time, the internal gas pressure gradually decreases, resulting in a gradual decrease in the distance and stability of the dry powder spraying during subsequent use, which in turn affects the effect of use. At the same time, it is easily affected by the external temperature. Another dry powder fire extinguisher stores high-pressure gas in a high-pressure gas cylinder. When in use, the high-pressure gas cylinder is opened through the internal structure to allow the high-pressure gas to fill the fire extinguisher bottle, and then the dry powder is sprayed out by the high-pressure gas. It has the characteristics of long storage time and stable use. However, it is extremely inconvenient to replace the gas cylinder because it is inside. At the same time, when in use, the gas cylinder valve needs to be opened, which is cumbersome to operate.

[0004] To this end, the present invention provides a fire extinguisher with a pressure compensation function. Summary of the invention

[0005] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a fire extinguisher with a pressure compensation function.

[0006] A fire extinguisher with a pressure compensation function, comprising the fire extinguisher, wherein a fixed cylinder is fixedly connected to the upper part of the fire extinguisher in a through-type manner, a first fixed frame is fixedly connected to the fixed cylinder, a cavity is opened inside the first fixed frame, a one-way valve is fixedly connected to the first fixed frame, a high-pressure gas cylinder is placed in the fixed cylinder, the high-pressure gas cylinder is inserted into the first fixed frame, a second fixed frame is fixedly connected to the fixed cylinder, the first fixed frame is slidably connected to a gas guide needle for piercing the seal of the high-pressure gas cylinder, a side of the gas guide needle close to the high-pressure gas cylinder is provided with a circumferentially distributed air release port, and the second fixed frame is fixedly connected to the first fixed frame. The second fixing frame is rotatably connected with a rotating ring, and the rotating ring pushes up the air guide needle when it rotates counterclockwise, and a first torsion spring is fixedly connected between the second fixing frame and the rotating ring, and an elastic buckle for locking the rotating ring is rotatably connected in the fixing cylinder, and a second torsion spring is fixedly connected between the elastic buckle and the fixing cylinder, and a fixed cavity is fixedly connected to the lower part of the fixing cylinder, and a sliding plug is slidably connected in the fixing cavity, and a connecting rod is fixedly connected to the sliding plug, and the connecting rod is movably connected to the elastic buckle through a movable groove, and the sliding plug is provided with a reset component for resetting the air guide needle.

[0007] As a further preferred solution, it also includes a push rod, which is fixedly connected to the sliding plug, and the push rod is extrusion-fitted with the rotating ring, and a spring is fixedly connected between the push rod and the sliding plug.

[0008] As a further preferred scheme, it also includes a first fixed tube, which is fixed to a side of the fixed tube close to the rotating ring, and the first fixed tube is slidably connected to a limit rod for limiting the air guide needle, and the limit rod is fixed to a first elastic telescopic part, which is located in the first fixed tube, and the end of the first elastic telescopic part away from the limit rod is set to be open.

[0009] As a further preferred solution, the first elastic telescopic member is configured as a bellows.

[0010] As a further preferred solution, a cover plate is also included, and the cover plate is rotatably connected to the top of the fixing cylinder.

[0011] As a further preferred solution, it also includes a second fixed tube, which is connected to the first fixed frame, and a locking rod is slidably connected in the fixed tube along the up and down directions, and the locking rod is engaged with the cover plate to lock the cover plate, and the second fixed tube is slidably connected to an extrusion rod for unlocking the cover plate, and the extrusion rod is fixed with a second elastic telescopic part, and the end of the second elastic telescopic part away from the extrusion rod is set to be open, and the second elastic telescopic part is located in the second fixed tube.

[0012] As a further preferred solution, the second elastic telescopic member is configured as a bellows.

[0013] As a further preferred solution, one end of the locking rod close to the extrusion rod is arranged as an inclined surface, and the inclined surface of the locking rod is extrusion-fitted with the extrusion rod.

[0014] The present invention has the following advantages: when the pressure in the fire extinguisher bottle is reduced, the rotating ring rotates to drive the gas guide needle to penetrate into the high-pressure gas cylinder, thereby achieving the effect of automatically compensating the gas pressure when the gas in the fire extinguisher is insufficient, ensuring the stability of the fire extinguisher bottle. Compared with the traditional fire extinguisher bottle, it prevents the situation in which the pressure is unstable and the spray effect is reduced during the second half of use.

[0015] The present invention achieves convenient replacement of the gas cylinder by simply rotating it when it is needed, through the threaded cooperation between the high-pressure gas cylinder and the first fixing frame, thereby greatly improving the flexibility and convenience of replacement.

[0016] The invention provides a one-way valve in the fire extinguisher bottle to prevent the gas in the fire extinguisher from escaping when the high-pressure gas cylinder is replaced, thereby ensuring the safety of the replacement.

[0017] The present invention limits the gas guide needle by a limiting rod to achieve double locking, so that the gas guide needle can pierce the seal of the high-pressure gas cylinder upwards only when the elastic buckle and the limiting rod are released from locking the rotating ring and the gas guide needle, thereby achieving a "double insurance" effect.

[0018] The present invention can prevent the high-pressure gas cylinder from being exposed to the outside through the cover plate, thereby preventing the high-pressure gas cylinder from being affected by external heat radiation, thermal expansion and other factors, thereby ensuring the stability of the high-pressure gas cylinder.

[0019] The present invention cooperates with the locking rod, the squeezing rod and other components so that the cover plate can be opened to replace the high-pressure gas cylinder only when the gas in the high-pressure gas cylinder is used up. When the gas in the high-pressure gas cylinder is not used up, the cover plate is always locked by the locking rod to avoid replacing the high-pressure gas cylinder before the gas is used up. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional structural cross-sectional view of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the first fixing frame, the one-way valve, the high-pressure gas cylinder and other components of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the second fixing frame, the air guide needle and the air release port and other components of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating ring of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the push rod, the spring and the first fixed tube of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the air guide needle, the first fixing tube and the first elastic telescopic member of the present invention.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the fire extinguisher and cover plate and other components of the present invention.

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second fixed tube, the second elastic telescopic member and other components of the present invention.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the second fixing tube, the locking rod and other components of the present invention.

[0030] The reference numbers in the figure are as follows: 101-fire extinguisher, 102-fixed cylinder, 103-first fixed frame, 104-check valve, 105-high-pressure gas cylinder, 106-second fixed frame, 107-air guide needle, 108-air vent, 109-rotating ring, 110-first torsion spring, 111-elastic buckle, 112-second torsion spring, 113-fixed cavity, 114-sliding plug, 115-connecting rod, 201-top rod, 202-spring, 301-first fixed tube, 302-first elastic telescopic member, 303-limiting rod, 401-cover plate, 501-second fixed tube, 502-second elastic telescopic member, 503-locking rod, 504-squeezing rod. DETAILED DESCRIPTION

[0031] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0032] Embodiment 1: A fire extinguisher with pressure compensation function, such as Figure 1-Figure 5 As shown, a fire extinguisher 101 is included. A fixed cylinder 102 is fixedly connected to the upper left side of the fire extinguisher 101 in a through-type manner. A first fixed frame 103 is fixedly connected to the middle of the fixed cylinder 102. A cavity is opened inside the first fixed frame 103. A one-way valve 104 is fixedly connected to the right side of the first fixed frame 103 to limit the high-pressure gas in the cavity of the first fixed frame 103 from entering the fire extinguisher 101 in one direction. A high-pressure gas cylinder 105 is inverted in the fixed cylinder 102. The bottle mouth of the high-pressure gas cylinder 105 is threadedly inserted into the first fixed frame 103. A second fixed frame 106 is fixedly connected to the lower part of the fixed cylinder 102. A gas guide needle 107 is slidably connected to the middle of the first fixed frame 103 along the up-down direction. The gas guide needle 107 slides upward to pierce the seal of the high-pressure gas cylinder 105. A circumferentially distributed air vent 108 is provided on the upper side of the air needle 107, and a rotating ring 109 is rotatably connected to the second fixed frame 106. When the rotating ring 109 rotates counterclockwise, the air guide needle 107 is pushed upward, and a first torsion spring 110 is fixedly connected between the second fixed frame 106 and the rotating ring 109. An elastic buckle 111 is rotatably connected inside the fixed cylinder 102, and the elastic buckle 111 is used to lock the rotating ring 109. A second torsion spring 112 is fixedly connected between the elastic buckle 111 and the fixed cylinder 102, and a fixed cavity 113 is fixedly connected to the lower part of the fixed cylinder 102, and a sliding plug 114 is slidably connected to the fixed cavity 113 along the up and down directions, and the sliding plug 114 is fixedly connected to a connecting rod 115, and the connecting rod 115 is movably connected to the elastic buckle 111 through a movable groove.

[0033] The high-pressure gas cylinder 105 filled with high-pressure gas and sealed is placed upside down in the fixed tube 102. When the gas in the fire extinguisher 101 is insufficient, the pressure value in the fire extinguisher 101 drops to the minimum, so that the pressure value in the fixed cavity 113 drops to the minimum. At this time, the sliding plug 114 slides downward to the minimum, thereby pulling the elastic buckle 111 to rotate to the side away from the rotating ring 109 through the connecting rod 115, and the second torsion spring 112 is deformed until the elastic buckle 111 no longer clamps the rotating ring 109. At this time, the first torsion spring 110 in the power storage state is reset to drive the rotating ring 109 to rotate counterclockwise, so that the rotating ring 109 pushes the air guide needle 107 to slide upward, so that the seal of the high-pressure gas cylinder 105 is punctured, and the gas in the high-pressure gas cylinder 105 is replenished into the fire extinguisher 101 through the air vent 108 and the one-way valve 104 in turn.

[0034] In summary, when the pressure in the fire extinguisher 101 decreases, the rotating ring 109 rotates, thereby driving the gas guide needle 107 to penetrate into the high-pressure gas cylinder 105, thereby achieving the effect of automatic air pressure compensation when the gas in the fire extinguisher 101 is insufficient, thereby ensuring the stability of the fire extinguisher bottle. Compared with the traditional fire extinguisher bottle, it prevents the situation in which the pressure is unstable and the spray effect is reduced during the second half of use.

[0035] Through the threaded cooperation between the high-pressure gas cylinder 105 and the first fixing frame 103, when the gas cylinder needs to be replaced, it can be easily replaced by rotating 105, which greatly improves the flexibility and convenience of replacement.

[0036] By providing a one-way valve 104 in the fire extinguisher 101, the gas in the fire extinguisher 101 is prevented from escaping when the high-pressure gas cylinder 105 is replaced, thereby ensuring the safety of replacement.

[0037] like Figure 6 As shown, it also includes a push rod 201 , which is fixedly connected to the top of the sliding plug 114 , and the push rod 201 is pressed and matched with the rotating ring 109 , and a spring 202 is fixedly connected between the push rod 201 and the sliding plug 114 .

[0038] In order to achieve reuse, the gas guide needle 107 needs to be slid downward and reset, so that the high-pressure gas cylinder 105 filled with high-pressure gas and sealed can be put back into the fixed tube 102. The specific operation is as follows: when new dry powder and air pressure are filled into the fire extinguisher 101, as the pressure value in the fixed cavity 113 gradually increases, the sliding plug 114 gradually slides upward, thereby driving the push rod 201 to slide upward, the spring 202 is compressed, and then pushes the rotating ring 109 to rotate clockwise, and the first torsion spring 110 deforms and accumulates force. After losing the squeezing of the rotating ring 109, the gas guide needle 107 slides downward and resets under the action of gravity. At the same time, the sliding plug 114 drives the connecting rod 115 to move upward. At this time, the second torsion spring 112 is reset to drive the elastic buckle 111 to rotate to the side close to the rotating ring 109, thereby re-jamming the rotating ring 109.

[0039] Embodiment 2: Based on embodiment 1, Figure 7 As shown, it also includes a first fixed tube 301, which is fixedly connected to one side of the fixed tube 102 close to the rotating ring 109. The first fixed tube 301 is slidably connected to a limit rod 303 along the left and right directions. The limit rod 303 is used to limit the air guide needle 107. The right end of the limit rod 303 is fixedly connected to a first elastic telescopic member 302. The first elastic telescopic member 302 is located in the first fixed tube 301. The first elastic telescopic member 302 is configured as a bellows, and the right end of the first elastic telescopic member 302 is configured to be open for air intake expansion.

[0040] In order to prevent the connection rod 115 from moving upward due to external force factors, resulting in the elastic buckle 111 failing to lock the rotating ring 109, and to prevent the gas guide needle 107 from accidentally piercing the seal of the high-pressure gas cylinder 105, when the pressure value in the fire extinguisher 101 rises to the highest, the first elastic telescopic member 302 expands, so that the limiting rod 303 slides outward from the first fixed tube 301 to clamp the gas guide needle 107, and the limiting rod 303 limits the gas guide needle 107 to achieve double locking, thereby achieving "double locking". In order to achieve the effect of "safety", when the pressure value in the fire extinguisher 101 drops to the lowest, the first elastic telescopic member 302 which loses the effect of air pressure contracts, so that the limiting rod 303 slides into the first fixed tube 301 until it is separated from the gas guide needle 107, and the lock on the gas guide needle 107 is automatically released. In this way, the gas guide needle 107 can pierce the seal of the high-pressure gas cylinder 105 upwards only when the lock on the rotating ring 109 by the elastic buckle 111 is released and the lock on the gas guide needle 107 by the limiting rod 303 is released.

[0041] Embodiment 3: Based on embodiment 2, Figure 2 and Figure 8 As shown, a cover plate 401 is also included, and the cover plate 401 is rotatably connected to the top of the fixing cylinder 102 .

[0042] The cover plate 401 can prevent the high-pressure gas cylinder 105 from being exposed to the outside, thereby preventing the high-pressure gas cylinder 105 from being affected by external heat radiation, thermal expansion and other factors, ensuring the stability of the high-pressure gas cylinder 105. The high-pressure gas cylinder 105 can be taken in and out by turning to open the cover plate 401.

[0043] like Fig. 9 and Fig.10 As shown, it also includes a second fixed tube 501, the second fixed tube 501 is connected to the first fixed frame 103, a locking rod 503 is slidably connected in the fixed tube 102 along the up and down direction, the locking rod 503 is engaged with the cover 401, and is used to lock the cover 401, the second fixed tube 501 is slidably connected to the extrusion rod 504 along the left and right direction, the bottom end of the locking rod 503 is set as an inclined surface, the inclined surface of the locking rod 503 is extruded and matched with the left end of the extrusion rod 504, and is used to unlock the cover 401, the right end of the extrusion rod 504 is fixedly connected to the second elastic telescopic member 502, the second elastic telescopic member 502 is set as a bellows, the right end of the second elastic telescopic member 502 is set to be open, for air intake expansion, the second elastic telescopic member 502 is located in the second fixed tube 501.

[0044] After the seal of the high-pressure gas cylinder 105 is punctured, if there is still gas in the high-pressure gas cylinder 105, the gas pressure in the high-pressure gas cylinder 105 acts on the inside of the second elastic telescopic member 502, causing the second elastic telescopic member 502 to expand, driving the squeezing rod 504 to slide leftward, and the squeezing rod 504 squeezes the inclined surface of the locking rod 503, causing the locking rod 503 to slide upward and lock the cover plate 401. If the gas in the high-pressure gas cylinder 105 is used up, the second elastic telescopic member 502, which has lost the effect of gas pressure, shrinks. The squeezing rod 504 is driven to slide to the right, and the squeezing rod 504 is disengaged from the inclined surface of the locking rod 503. The locking rod 503 slides downward under the action of its own gravity, thereby releasing the lock on the cover plate 401, so that the cover plate 401 can be opened to replace the high-pressure gas cylinder 105 only when the gas in the high-pressure gas cylinder 105 is used up. When the gas in the high-pressure gas cylinder 105 is not used up, the cover plate 401 is always locked by the locking rod 503 to avoid replacing the high-pressure gas cylinder 105 before the gas is used up.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire extinguisher with pressure compensation function, characterized in that: The invention comprises a fire extinguisher (101), wherein a fixing cylinder (102) is fixedly connected to the upper part of the fire extinguisher (101), a first fixing frame (103) is fixedly connected to the fixing cylinder (102), a cavity is formed inside the first fixing frame (103), a one-way valve (104) is fixedly connected to the first fixing frame (103), a high-pressure gas cylinder (105) is placed inside the fixing cylinder (102), the high-pressure gas cylinder (105) is inserted into the first fixing frame (103), a second fixing frame (106) is fixedly connected to the fixing cylinder (102), a gas guide needle (107) for piercing the seal of the high-pressure gas cylinder (105) is slidably connected to the first fixing frame (103), a side of the gas guide needle (107) close to the high-pressure gas cylinder (105) is provided with circumferentially distributed gas release ports (108), and the second fixing frame (106) is rotatably connected to a rotating shaft (106). A ring (109) is provided, wherein the rotating ring (109) pushes up the air guide needle (107) when rotating counterclockwise, a first torsion spring (110) is fixedly connected between the second fixing frame (106) and the rotating ring (109), an elastic buckle (111) for locking the rotating ring (109) is rotatably connected inside the fixed cylinder (102), a second torsion spring (112) is fixedly connected between the elastic buckle (111) and the fixed cylinder (102), a fixed cavity (113) is fixedly connected to the lower part of the fixed cylinder (102), a sliding plug (114) is slidably connected inside the fixed cavity (113), a connecting rod (115) is fixedly connected to the sliding plug (114), the connecting rod (115) is movably connected to the elastic buckle (111) through a movable groove, and the sliding plug (114) is provided with a reset component for resetting the air guide needle (107).

2. A fire extinguisher with pressure compensation function as claimed in claim 1, characterized in that: The reset assembly comprises a push rod (201), the push rod (201) is fixedly connected to the sliding plug (114), the push rod (201) is extrusion-fitted with the rotating ring (109), and a spring (202) is fixedly connected between the push rod (201) and the sliding plug (114).

3. A fire extinguisher with pressure compensation function as claimed in claim 2, characterized in that: The invention also comprises a first fixed tube (301), wherein the first fixed tube (301) is fixedly connected to a side of the fixed tube (102) close to the rotating ring (109), and the first fixed tube (301) is slidably connected to a limiting rod (303) for limiting the position of the air guide needle (107), and the limiting rod (303) is fixedly connected to a first elastic telescopic component (302), and the first elastic telescopic component (302) is located in the first fixed tube (301), and one end of the first elastic telescopic component (302) away from the limiting rod (303) is set to be open.

4. A fire extinguisher with pressure compensation function as claimed in claim 3, characterized in that: The first elastic telescopic member (302) is configured as a bellows.

5. A fire extinguisher with pressure compensation function as claimed in claim 4, characterized in that: It also includes a cover plate (401), wherein the cover plate (401) is rotatably connected to the top of the fixed cylinder (102).

6. A fire extinguisher with pressure compensation function as claimed in claim 5, characterized in that: The invention also comprises a second fixing tube (501), wherein the second fixing tube (501) is connected to the first fixing frame (103), a locking rod (503) is slidably connected in the fixing tube (102) along the up-down direction, the locking rod (503) is engaged with the cover plate (401) and is used to lock the cover plate (401), the second fixing tube (501) is slidably connected to an extrusion rod (504) for unlocking the cover plate (401), the extrusion rod (504) is fixedly connected to a second elastic telescopic member (502), an end of the second elastic telescopic member (502) away from the extrusion rod (504) is set to be open, and the second elastic telescopic member (502) is located in the second fixing tube (501).

7. A fire extinguisher with pressure compensation function as claimed in claim 6, characterized in that: The second elastic telescopic member (502) is configured as a bellows.

8. A fire extinguisher with pressure compensation function as claimed in claim 7, characterized in that: One end of the locking rod (503) close to the extrusion rod (504) is arranged as an inclined surface, and the inclined surface of the locking rod (503) is extruded and matched with the extrusion rod (504).

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