A fire extinguisher with a pressure compensation function

Abstract

The present invention discloses a fire extinguisher with a pressure compensation function, which relates to the technical field of fire extinguishers. It includes the fire extinguisher, a fixed cylinder is fixedly connected through the upper part of the fire extinguisher, a first fixed frame is fixedly connected inside the fixed cylinder, a cavity is formed inside the first fixed frame, a one-way valve is fixedly connected to the first fixed frame, a high-pressure gas cylinder is placed inside the fixed cylinder, the high-pressure gas cylinder is inserted into the first fixed frame, a second fixed frame is fixedly connected inside the fixed cylinder, and a gas guiding needle for piercing the sealing of the high-pressure gas cylinder is slidably connected to the first fixed frame. When the pressure inside the fire extinguisher bottle decreases in the present invention, the rotating ring rotates, thereby driving the gas guiding needle to pierce into the high-pressure gas cylinder, achieving the effect of automatically compensating the air pressure when the gas in the fire extinguisher is insufficient, ensuring the stability inside the fire extinguisher bottle. Compared with traditional fire extinguisher bottles, it prevents the situation that the spraying effect decreases due to unstable pressure during the use in the second half.

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 essential fire-fighting item in daily life, dry powder fire extinguishers have the advantages of wide application range and easy portability, and play a crucial role in ensuring property safety.

[0003] Among the existing dry powder fire extinguishers, a common type of dry powder fire extinguisher presses out the dry powder through high-pressure gas inside, which has the characteristics of simple structure and convenient use. However, as the use time of the dry powder fire extinguisher becomes longer, the internal gas pressure gradually decreases, resulting in a gradual decrease in the spraying distance and stability of the dry powder during subsequent use, thereby affecting the use effect. At the same time, it is easily interfered by the external temperature. Another type of dry powder fire extinguisher stores high-pressure gas in a high-pressure gas cylinder inside, and when in use, the high-pressure gas cylinder is opened through an internal structure, and the high-pressure gas is filled into the fire extinguisher bottle body, and then the dry powder is sprayed out through the high-pressure gas. It has the characteristics of long storage time and stable use. However, when replacing, since the gas cylinder is inside, it is extremely inconvenient to replace. At the same time, when in use, the gas cylinder valve needs to be opened, and the operation is cumbersome.

[0004] Therefore, the present invention provides a fire extinguisher with a pressure compensation function. Summary of the Invention

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

[0006] A fire extinguisher with a pressure compensation function includes the fire extinguisher. A fixed cylinder is fixedly connected through the upper part of the fire extinguisher. A first fixing frame is fixedly connected inside the fixed cylinder. A cavity is formed inside the first fixing frame. A one-way valve is fixedly connected to the first fixing frame. A high-pressure gas cylinder is placed inside the fixed cylinder. The high-pressure gas cylinder is inserted into the first fixing frame. A second fixing frame is fixedly connected inside the fixed cylinder. A gas guiding needle for piercing the seal of the high-pressure gas cylinder is slidably connected to the first fixing frame. A circumferentially distributed air leakage port is formed on one side of the gas guiding needle close to the high-pressure gas cylinder. A rotating ring is rotatably connected to the second fixing frame. When the rotating ring rotates counterclockwise, it jacks up the gas guiding needle upward. A first torsion spring is fixedly connected between the second fixing frame and the rotating ring. An elastic buckle for locking the rotating ring is rotatably connected inside the fixed cylinder. A second torsion spring is fixedly connected between the elastic buckle and the fixed cylinder. A fixed cavity is fixedly connected to the lower part inside the fixed cylinder. A sliding plug is slidably connected inside the fixed cavity. A connecting rod is fixedly connected to the sliding plug. The connecting rod is movably connected to the elastic buckle through a movable groove. The sliding plug is provided with a reset component for resetting the gas guiding needle.

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

[0008] As a further preferred solution, it further includes a first fixed tube, the first fixed tube is fixedly connected to one side of the fixed cylinder close to the rotating ring, the first fixed tube is slidably connected with a limiting rod for limiting the air guide needle, the limiting rod is fixedly connected with a first elastic telescopic member, the first elastic telescopic member is located inside the first fixed tube, and one end of the first elastic telescopic member away from the limiting rod is provided as an open end.

[0009] As a further preferred solution, the first elastic telescopic member is provided as a corrugated pipe.

[0010] As a further preferred solution, it further includes a cover plate, and the cover plate is rotatably connected to the top of the fixed cylinder.

[0011] As a further preferred solution, it further includes a second fixed tube, the second fixed tube is communicated with the first fixing frame, a locking rod is slidably connected in the fixed cylinder in the up and down direction, the locking rod is engaged with the cover plate for locking the cover plate, the second fixed tube is slidably connected with a pressing rod for unlocking the cover plate, the pressing rod is fixedly connected with a second elastic telescopic member, one end of the second elastic telescopic member away from the pressing rod is provided as an open end, and the second elastic telescopic member is located inside the second fixed tube.

[0012] As a further preferred solution, the second elastic telescopic member is provided as a corrugated pipe.

[0013] As a further preferred solution, one end of the locking rod close to the pressing rod is provided as an inclined surface, and the inclined surface of the locking rod is in extrusion fit with the pressing rod.

[0014] The present invention has the following advantages: When the pressure in the fire extinguisher bottle decreases, the present invention drives the air guide needle to penetrate into the high-pressure gas cylinder by rotating the rotating ring, realizing the effect of automatically compensating the air pressure when the gas in the fire extinguisher is insufficient, ensuring the stability inside the fire extinguisher bottle. Compared with traditional fire extinguisher bottles, it prevents the situation that the spraying effect decreases due to unstable pressure during the latter half of use.

[0015] The present invention realizes convenient replacement by rotation when the gas cylinder needs to be replaced through the threaded fit between the high-pressure gas cylinder and the first fixing frame, greatly improving the flexibility and convenience of replacement.

[0016] By providing a one-way valve inside the fire extinguisher bottle, the present invention prevents the gas inside the fire extinguisher from escaping during the replacement of the high-pressure gas cylinder, ensuring the safety of the replacement.

[0017] The present invention limits the gas guide needle through a limit rod to achieve double locking. Only when the elastic buckle's lock on the rotating ring is released and the limit rod's lock on the gas guide needle is released can the gas guide needle pierce upward through the seal of the high-pressure gas cylinder, achieving the effect of "double insurance".

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

[0019] Through the cooperation of components such as a locking rod and a pressing rod, the present invention enables the cover plate to be opened for the replacement of the high-pressure gas cylinder only when the gas inside the high-pressure gas cylinder is used up. When the gas inside the high-pressure gas cylinder has not been used up, the cover plate is always locked by the locking rod, preventing the replacement of the high-pressure gas cylinder when the gas has not been used up. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0025] Figure 6 is a three-dimensional structural schematic diagram of components such as the ejector rod, spring, and first fixing tube of the present invention.

[0026] Figure 7 is a three-dimensional structural schematic diagram of components such as the gas guide needle, first fixing tube, and first elastic telescopic member of the present invention.

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

[0028] Figure 9 is a three-dimensional structural schematic diagram of components such as the second fixing tube and second elastic telescopic member of the present invention.

[0029] Figure 10 is a three-dimensional structural schematic diagram of components such as the second fixing tube and locking rod of the present invention.

[0030] Names of the reference numerals in the figure: 101 - fire extinguisher, 102 - fixed cylinder, 103 - first fixing bracket, 104 - one - way valve, 105 - high - pressure gas cylinder, 106 - second fixing bracket, 107 - gas guiding needle, 108 - air release port, 109 - rotating ring, 110 - first torsion spring, 111 - elastic buckle, 112 - second torsion spring, 113 - fixed cavity, 114 - sliding plug, 115 - connecting rod, 201 - ejector rod, 202 - spring, 301 - first fixing tube, 302 - first elastic telescopic member, 303 - limiting rod, 401 - cover plate, 501 - second fixing tube, 502 - second elastic telescopic member, 503 - locking rod, 504 - extrusion rod. Specific embodiments

[0031] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right in this article are only for the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article itself, such as: first, second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application, terms such as: connection, coupling, unless otherwise specified, all include direct and indirect connection (coupling).

[0032] Embodiment 1: A fire extinguisher with a pressure compensation function, as Figures 1-5 shown, includes a fire extinguisher 101. The upper left side of the fire extinguisher 101 is fixedly connected through - hole with a fixed cylinder 102. In the middle of the fixed cylinder 102, a first fixing bracket 103 is fixedly connected. There is a cavity inside the first fixing bracket 103. A one - way valve 104 is fixedly connected to the right side of the first fixing bracket 103, restricting the one - way entry of high - pressure gas in the cavity of the first fixing bracket 103 into the fire extinguisher 101. A high - pressure gas cylinder 105 is inverted in the fixed cylinder 102, and the mouth of the high - pressure gas cylinder 105 is threadedly inserted into the first fixing bracket 103. A second fixing bracket 106 is fixedly connected to the lower part of the fixed cylinder 102. A gas guiding needle 107 is slidably connected in the middle of the first fixing bracket 103 in the up - down direction. The upward sliding of the gas guiding needle 107 can pierce the seal of the high - pressure gas cylinder 105. Circumferentially distributed air release ports 108 are opened on the upper side of the gas guiding needle 107. A rotating ring 109 is rotatably connected to the second fixing bracket 106. When the rotating ring 109 rotates counter - clockwise, it jacks up the gas guiding needle 107 upward. A first torsion spring 110 is fixedly connected between the second fixing bracket 106 and the rotating ring 109. An elastic buckle 111 is rotatably connected in 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. A fixed cavity 113 is fixedly connected to the lower part of the fixed cylinder 102. A sliding plug 114 is slidably connected in the fixed cavity 113 in the up - down direction. The sliding plug 114 is fixedly connected with 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 cylinder 102. When the gas in the fire extinguisher 101 is insufficient, the pressure value in the fire extinguisher 101 drops to the lowest, causing the pressure value in the fixed cavity 113 to drop to the lowest. At this time, the sliding plug 114 slides down to the lowest position, thereby pulling the elastic buckle 111 to rotate away from the rotating ring 109 through the connecting rod 115, and the second torsion spring 112 deforms until the elastic buckle 111 no longer catches the rotating ring 109. At this time, the first torsion spring 110 in the energy storage state resets and drives the rotating ring 109 to rotate counterclockwise, causing the rotating ring 109 to push 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 in sequence through the air release port 108 and the one-way valve 104.

[0034] In summary, when the pressure in the fire extinguisher 101 bottle decreases, the rotating ring 109 rotates, driving the air guide needle 107 to pierce into the high-pressure gas cylinder 105, achieving the effect of automatically compensating the air pressure when the gas in the fire extinguisher 101 is insufficient, ensuring the stability inside the fire extinguisher bottle. Compared with traditional fire extinguisher bottles, it prevents the situation where the spraying effect decreases due to unstable pressure during the latter half of use.

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

[0036] By arranging a one-way valve 104 inside the fire extinguisher 101 bottle, it prevents the gas in the fire extinguisher 101 from escaping when replacing the high-pressure gas cylinder 105, ensuring the safety of replacement.

[0037] As Figure 6 shown, it further includes a push rod 201. The push rod 201 is fixedly connected to the top of the sliding plug 114. The push rod 201 is in extrusion fit with the rotating ring 109, and a spring 202 is fixedly connected between the push rod 201 and the sliding plug 114.

[0038] For reuse, the air guide needle 107 needs to be slid downward to reset, so that a high-pressure gas cylinder 105 filled with high-pressure gas and sealed can be reinstalled in the fixed cylinder 102. The specific operation is as follows: when filling new dry powder and air pressure into the fire extinguisher 101, as the pressure value in the fixed cavity 113 gradually increases, the sliding plug 114 gradually slides upward, driving the ejector rod 201 to slide upward, compressing the spring 202, and then pushing the rotating ring 109 to rotate clockwise. The first torsion spring 110 deforms and stores energy. After losing the extrusion of the rotating ring 109, the air guide needle 107 slides downward to reset 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 resets and drives the elastic buckle 111 to rotate toward the side close to the rotating ring 109, thereby re-locking the rotating ring 109.

[0039] Embodiment 2: On the basis of Embodiment 1, as Figure 7 shown, it further includes a first fixing tube 301. The first fixing tube 301 is fixedly connected to the side of the fixed cylinder 102 close to the rotating ring 109. The first fixing tube 301 is slidably connected with a limiting rod 303 in the left-right direction. The limiting rod 303 is used to limit the air guide needle 107. The right end of the limiting rod 303 is fixedly connected with a first elastic telescopic member 302. The first elastic telescopic member 302 is located in the first fixing tube 301. The first elastic telescopic member 302 is set as a corrugated tube. The right end of the first elastic telescopic member 302 is open for air intake and expansion.

[0040] To prevent the connecting rod 115 from moving upward due to external force factors, resulting in the locking failure of the elastic buckle 111 to the rotating ring 109 and avoiding the air 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, causing the limiting rod 303 to slide out of the first fixing tube 301 to block the air guide needle 107. The air guide needle 107 is limited by the limiting rod 303 to achieve double locking, reaching the effect of "double insurance". When the pressure value in the fire extinguisher 101 drops to the lowest, the first elastic telescopic member 302 that loses the air pressure effect contracts, causing the limiting rod 303 to slide into the first fixing tube 301 to disengage from the air guide needle 107, automatically releasing the lock on the air guide needle 107. In this way, only when the lock of the elastic buckle 111 to the rotating ring 109 is released and the lock of the limiting rod 303 to the air guide needle 107 is released, can the air guide needle 107 pierce the seal of the high-pressure gas cylinder 105 upward.

[0041] Embodiment 3: On the basis of Embodiment 2, as Figure 2 and Figure 8 shown, it further includes a cover plate 401. The cover plate 401 is rotatably connected to the top of the fixed cylinder 102.

[0042] The high-pressure gas cylinder 105 can be prevented from being exposed to the outside through the cover plate 401, 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, and the high-pressure gas cylinder 105 can be taken and placed by rotating and opening the cover plate 401.

[0043] As Figure 9 and Figure 10 shown, it further includes a second fixed pipe 501. The second fixed pipe 501 is communicated with the first fixing frame 103. A locking rod 503 is slidably connected in the fixing cylinder 102 in the vertical direction. The locking rod 503 is engaged with the cover plate 401 for locking the cover plate 401. A pressing rod 504 is slidably connected to the second fixed pipe 501 in the horizontal direction. The bottom end of the locking rod 503 is provided with an inclined surface. The inclined surface of the locking rod 503 is in pressing cooperation with the left end of the pressing rod 504 for unlocking the cover plate 401. A second elastic telescopic member 502 is fixedly connected to the right end of the pressing rod 504. The second elastic telescopic member 502 is set as a corrugated pipe. The right end of the second elastic telescopic member 502 is provided with an open end for air intake and expansion. The second elastic telescopic member 502 is located in the second fixed pipe 501.

[0044] After the seal of the high-pressure gas cylinder 105 is punctured, if there is always gas in the high-pressure gas cylinder 105, the air 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 pressing rod 504 to slide to the left. The pressing rod 504 presses the inclined surface of the locking rod 503, causing the locking rod 503 to slide upward to lock the cover plate 401. If the gas in the high-pressure gas cylinder 105 is used up, the second elastic telescopic member 502 that loses the air pressure effect contracts, driving the pressing rod 504 to slide to the right. The pressing rod 504 disengages from the inclined surface of the locking rod 503, and the locking rod 503 slides downward under its own gravity, thereby unlocking the cover plate 401, so that the cover plate 401 can be opened for replacing 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, avoiding replacing the high-pressure gas cylinder 105 when the gas in the high-pressure gas cylinder 105 is not used up.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fire extinguisher with a pressure compensation function, characterized in that It includes a fire extinguisher (101). A fixed cylinder (102) is fixedly connected through the upper part of the fire extinguisher (101). A first fixing frame (103) is fixedly connected inside the fixed 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 fixed cylinder (102). The high-pressure gas cylinder (105) is inserted into the first fixing frame (103). A second fixing frame (106) is fixedly connected inside the fixed cylinder (102). A gas guiding needle (107) for piercing the seal of the high-pressure gas cylinder (105) is slidably connected to the first fixing frame (103). A circumferentially distributed air leakage port (108) is formed on one side of the gas guiding needle (107) close to the high-pressure gas cylinder (105). A rotating ring (109) is rotatably connected to the second fixing frame (106). When the rotating ring (109) rotates counterclockwise, it jacks up the gas guiding needle (107). 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 inside 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. The sliding plug (114) is provided with a reset assembly for resetting the gas guiding needle (107). It further includes a cover plate (401). The cover plate (401) is rotatably connected to the top of the fixed cylinder (102). It further includes a second fixed pipe (501). The second fixed pipe (501) is communicated with the first fixing frame (103). A locking rod (503) is slidably connected in the fixed cylinder (102) in the vertical direction. The locking rod (503) is engaged with the cover plate (401) for locking the cover plate (401). An extrusion rod (504) for unlocking the cover plate (401) is slidably connected to the second fixed pipe (501). A second elastic telescopic member (502) is fixedly connected to the extrusion rod (504). One end of the second elastic telescopic member (502) far from the extrusion rod (504) is open. The second elastic telescopic member (502) is located inside the second fixed pipe (501). One end of the locking rod (503) close to the extrusion rod (504) is provided with an inclined surface. The inclined surface of the locking rod (503) is in extrusion fit with the extrusion rod (504).

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

3. The fire extinguisher with a pressure compensation function according to claim 2, characterized in that, It further includes a first fixed tube (301), the first fixed tube (301) is fixedly connected to one side of the fixed cylinder (102) close to the rotating ring (109), a limiting rod (303) for limiting the air guide needle (107) is slidably connected to the first fixed tube (301), a first elastic telescopic member (302) is fixedly connected to the limiting rod (303), the first elastic telescopic member (302) is located inside the first fixed tube (301), and one end of the first elastic telescopic member (302) away from the limiting rod (303) is open.

4. The fire extinguisher with a pressure compensation function according to claim 3, characterized in that, The first elastic telescopic member (302) is arranged as a corrugated pipe.

5. The fire extinguisher with a pressure compensation function according to claim 4, characterized in that, The second elastic telescopic member (502) is arranged as a corrugated pipe.

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