An indoor hand-propelled fire extinguisher

Abstract

This utility model provides an indoor hand-push fire extinguisher, relating to the field of fire extinguisher technology. The utility model includes a fire extinguishing canister mounted on the top of a handcart. A connector is fixedly connected to the upper end of the fire extinguishing canister. A safety pin is provided on the front of the connector, and a rotating handwheel is provided on the inner wall of the connector. A convenient replacement component is provided on the right end of the connector. A support frame is fixedly connected to the lower end of the handcart. By providing the convenient replacement component, when replacing the spray hose, the limiting mechanism is released, causing the trapezoidal block to fully retract into the connector, compressing the return spring. Then, the replacement head is dragged, separating it from the connector. The replacement head on the new spray hose is then inserted into the connector. The limiting mechanism then resets the return spring, allowing the trapezoidal block to be inserted into the spray hose, thus securing the spray hose and maximizing the convenience of hose replacement.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher technology, and in particular to an indoor hand-push fire extinguisher. Background Technology

[0002] Fire extinguishers are used to extinguish indoor fires. A fire extinguisher consists of a fire extinguisher canister mounted on a handcart, a rotating handwheel, a safety pin, a connector, and a spray hose. To use the extinguisher, the user pushes the canister to a distance of approximately 10 meters from the fire source using the handcart and brings it to a stop. Then, the safety pin is released, and the handwheel is rotated counter-clockwise to its maximum opening. The spray hose is then extended, and the nozzle holder is gripped firmly. The user should maintain a distance of 1-2 meters from the flames, aiming the nozzle at the base of the flames to extinguish the fire. After extinguishing the fire, the valve is closed, the pressure handle is released, the handwheel is tightened, the nozzle is cleaned, and the hose is coiled back onto the handcart. Leakage should be checked periodically.

[0003] The inventor discovered in his daily work that when using fire extinguishers, some indoor fire areas are large, and the standard length of the spray hose cannot completely cover the fire area, requiring the spray hose to be replaced for fire extinguishing. However, when replacing the spray hose, the user needs to use a screwdriver to loosen the clamp, then pull out the spray hose, then put on a longer spray hose, and then use a screwdriver to tighten the clamp screw to fix the spray hose to the connector on the fire extinguisher. This can make the replacement process very cumbersome and affect the fire extinguishing efficiency. Utility Model Content

[0004] The technical problem this invention aims to solve is that, in actual use, some indoor fire areas are large, and conventionally long spray hoses cannot completely cover the fire area, necessitating the replacement of the spray hose for fire extinguishing. However, when replacing the spray hose, the user needs to use a screwdriver to loosen the clamp, then pull out the spray hose, then put on a longer spray hose, and then use a screwdriver to tighten the clamp screws to fix the spray hose to the connector on the fire extinguisher. This can make the replacement process very cumbersome and affect the fire extinguishing efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an indoor hand-push fire extinguisher, including a fire extinguishing canister set on the upper end of a handcart, a connector fixedly connected to the upper end of the fire extinguishing canister, a safety pin provided on the front of the connector, a rotating handwheel provided on the inner wall of the connector, a convenient replacement component provided on the right end of the connector, a support frame fixedly connected to the lower end of the handcart, the convenient replacement component including a replacement head slidably connected to the inner wall of the connector, a spray hose fixedly connected to the right end of the replacement head, and a plurality of evenly distributed trapezoidal blocks slidably inserted into the inner wall of the connector, and a return spring fixedly connected between the trapezoidal blocks and the connector.

[0006] The effect achieved by the above components is as follows: by setting up a convenient replacement component, when replacing the spray hose, the limiting mechanism is released, allowing the trapezoidal block to retract completely into the connector, compressing the return spring, and then dragging the replacement head to separate it from the connector. Then, the replacement head on the new spray hose is inserted into the connector, and the limiting mechanism is used to reset the return spring, allowing the trapezoidal block to be inserted into the spray hose to fix the spray hose, thereby facilitating the replacement of the spray hose as much as possible.

[0007] Preferably, a magnetic sheet is fixed to the upper end of the trapezoidal block, and a magnetic ring is slidably connected to the arc surface of the connector. The cross-section of the magnetic ring is trapezoidal, and the magnetic ring attracts the magnetic sheet.

[0008] The effect achieved by the above components is as follows: dragging the magnetic ring brings it closer to the magnetic sheet, attracting the magnetic sheet, causing the trapezoidal block to retract completely into the connector, compressing the return spring; dragging the magnetic ring moves it away from the magnetic sheet, causing the return spring to reset.

[0009] Preferably, a sealing ring is provided between the connector and the replacement head.

[0010] The effect achieved by the above components is to seal the connection head and the replacement head by setting a sealing ring.

[0011] Preferably, a fixing ring is fixedly connected to the arc surface of the replacement head, and an elastic limiting rod is fixedly connected to the left end of the fixing ring. A limiting ring is fixedly connected to the arc surface of the connector, and the cross-section of the limiting ring is triangular.

[0012] The effect achieved by the above components is as follows: the replacement head is fixed by the fixing ring and the limiting rod, and the magnetic ring is dragged to lift the limiting rod, thereby fixing the replacement head.

[0013] Preferably, the right end of the trolley is provided with a clamping and fixing component, which includes semi-circular blocks disposed on both sides of the arc surface of the fire extinguisher, and the inner wall of the semi-circular blocks is provided with rubber strips.

[0014] The effect achieved by the above components is that the driving mechanism causes the semi-circular blocks on both sides to move closer to each other, so that the rubber strips of the semi-circular blocks move closer to the fire extinguisher, thereby clamping and fixing the fire extinguisher.

[0015] Preferably, a grooved block is fixedly connected to the arc surface of the handcart, a rack is slidably connected to the inner wall of the grooved block, a gear is meshed between two racks, the gear is rotatably connected to the grooved block via a rotating shaft, an operating turntable is provided on the back of the grooved block, the operating turntable is fixed to the rotating shaft, a slider is slidably connected to the inner wall of the grooved block, the slider is fixed to the semi-circular block, and the slider is fixed to the rack.

[0016] The effect achieved by the above components is as follows: rotating the operating turntable causes the gear to rotate, which in turn causes the rack inside the grooved block to move, causing the semi-circular blocks connected by the slider to move closer to each other.

[0017] Preferably, the front of the operating turntable is slidably inserted with a pin, and the front of the slotted block is provided with a plurality of evenly distributed positioning slots, the inner wall of the positioning slots being provided with protrusions.

[0018] The effect achieved by the above components is to insert the pin into the positioning slot, thereby limiting the operation of the turntable.

[0019] Preferably, a tension spring is fixedly connected to one side of the pin, and the other end of the tension spring is fixed to the operating turntable.

[0020] The effect achieved by the above components is that by setting a tension spring, the pin is pulled in an auxiliary manner, thereby limiting the pin's position.

[0021] The beneficial effects of this utility model are:

[0022] By incorporating a convenient replacement component, when replacing the spray hose, the limiting mechanism releases, allowing the trapezoidal block to fully retract into the connector, compressing the return spring. The replacement head is then pulled to separate from the connector, and the replacement head on the new spray hose is inserted into the connector. The limiting mechanism then resets the return spring, allowing the trapezoidal block to insert into the spray hose, securing it. This design maximizes the ease of hose replacement and addresses the problem that in some indoor fire areas, where standard-length spray hoses cannot fully cover the area, requiring hose replacement, the user previously had to use a screwdriver to loosen the clamps, remove the hose, insert a longer hose, and then tighten the clamps again, making the replacement process cumbersome and affecting firefighting efficiency. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0026] Figure 3 This is a three-dimensional structural diagram illustrating the convenient replacement of components in this utility model.

[0027] Figure 4A three-dimensional structural diagram of the cross-section of the component for easy replacement in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the clamping and fixing component of this utility model after an explosion;

[0029] Figure 6 This is a three-dimensional structural diagram of the present invention, showing the explosion from another angle for easy replacement of components.

[0030] Legend: 1. Handcart; 2. Easy-to-replace component; 3. Clamping and fixing component; 4. Fire extinguisher; 5. Connector; 6. Support frame; 7. Safety pin; 8. Rotary handwheel; 9. Spray hose; 21. Replacement head; 22. Trapezoidal block; 23. Return spring; 24. Magnetic ring; 25. Magnetic sheet; 26. Fixing ring; 27. Limiting rod; 28. Limiting ring; 29. ​​Sealing ring; 31. Semi-circular block; 32. Grooved block; 33. Rubber strip; 34. Rack; 35. Gear; 36. Slider; 37. Pin; 38. Tension spring; 39. Operating turntable. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example 1: An indoor hand-push fire extinguisher includes a fire extinguishing canister 4 mounted on the upper end of a handcart 1. A connector 5 is fixedly connected to the upper end of the fire extinguishing canister 4. A safety pin 7 is provided on the front of the connector 5. A rotating handwheel 8 is provided on the inner wall of the connector 5. A replacement component 2 is provided on the right end of the connector 5. A support frame 6 is fixedly connected to the lower end of the handcart 1.

[0034] Reference Figure 3 and Figure 4As shown in this embodiment: the convenient replacement component 2 includes a replacement head 21 slidably connected to the inner wall of the connector head 5. A spray hose 9 is fixedly connected to the right end of the replacement head 21. Multiple evenly distributed trapezoidal blocks 22 are slidably inserted into the inner wall of the connector head 5. A return spring 23 is fixedly connected between the trapezoidal blocks 22 and the connector head 5. By setting the convenient replacement component 2, when replacing the spray hose 9, the limiting mechanism is released, causing the trapezoidal blocks 22 to fully retract into the connector head 5, compressing the return spring 23. Then, the replacement head 21 is dragged to separate from the connector head 5. The replacement head 21 on the new spray hose 9 is then inserted into the connector head 5. The limiting mechanism then resets the return spring 23, allowing the trapezoidal blocks 22 to be inserted into the spray hose 9, thus securing the spray hose 9 and maximizing the convenience of replacing the spray hose 9. A magnetic sheet 25 is fixed to the upper end of the trapezoidal block 22. The arc of the connector head 5... A magnetic ring 24 with a trapezoidal cross-section is slidably connected to the connector 5. The magnetic ring 24 attracts the magnetic sheet 25. Dragging the magnetic ring 24 brings it closer to the magnetic sheet 25, attracting the magnetic sheet 25 and causing the trapezoidal block 22 to retract completely into the connector 5, compressing the return spring 23. Dragging the magnetic ring 24 away from the magnetic sheet 25 resets the return spring 23. A sealing ring 29 is provided between the connector 5 and the replacement head 21 to seal the connection. A fixing ring 26 is fixedly connected to the arc surface of the replacement head 21. An elastic limiting rod 27 is fixedly connected to the left end of the fixing ring 26. A limiting ring 28 with a triangular cross-section is fixedly connected to the arc surface of the connector 5. The replacement head 21 is fixed by the fixing ring 26, the limiting rod 27, and the limiting ring 28. Dragging the magnetic ring 24 lifts the limiting rod 27, thus fixing the replacement head 21.

[0035] Reference Figure 2 and Figure 5 as well as Figure 6As shown in this embodiment: a clamping and fixing assembly 3 is provided at the right end of the handcart 1. The clamping and fixing assembly 3 includes semi-circular blocks 31 on both sides of the arc surface of the fire extinguisher 4. The inner wall of the semi-circular blocks 31 is provided with rubber strips 33. Through the driving mechanism, the semi-circular blocks 31 on both sides are brought closer to each other, so that the rubber strips 33 of the semi-circular blocks 31 are close to the fire extinguisher 4, thereby clamping and fixing the fire extinguisher 4. A grooved block 32 is fixedly connected to the arc surface of the handcart 1. A rack 34 is slidably connected to the inner wall of the grooved block 32. A gear 35 is meshed between the two racks 34. The gear 35 is rotatably connected to the grooved block 32 by means of a rotating shaft. An operating turntable 39 is provided on the back of the grooved block 32. The operating turntable 39 is fixed to the rotating shaft. A slider 36 is slidably connected to the inner wall of the grooved block 32. Slider 36 and semi-circular block 31 are fixed, slider 36 and rack 34 are fixed. Rotating the operating turntable 39 causes gear 35 to rotate, causing rack 34 in slotted block 32 to move, causing semi-circular blocks 31 connected to slider 36 to move closer to each other. A pin 37 is slidably inserted on the front of the operating turntable 39. Multiple evenly distributed positioning grooves are opened on the front of the slotted block 32. The inner wall of the positioning groove is provided with protrusions. Inserting pin 37 into the positioning groove limits the operation turntable 39. A tension spring 38 is fixedly connected to one side of pin 37. The other end of tension spring 38 is fixed to the operating turntable 39. By setting tension spring 38, the pin 37 is pulled to limit it.

[0036] Working principle:

[0037] When using a fire extinguisher (model MTT30 is optional), the user pushes the extinguisher canister 4 to a distance of approximately 10 meters from the fire source using a handcart 1 and brings it to a stop. Then, release the safety pin 7, turn the handwheel 8 counterclockwise to its maximum opening, extend the spray hose 9, grip the nozzle holder firmly, and position the user 1-2 meters away from the flames. Aim the nozzle at the base of the flames to extinguish the fire. After extinguishing the fire, close the valve, loosen the lever, tighten the handwheel, clean the nozzle, and coil the hose back onto the handcart. Regularly check for leaks. When replacing the spray hose 9, drag the magnetic ring 24 until it approaches the magnetic plate 25, attracting the magnetic plate 25 and causing the trapezoidal block 22 to fully retract into the connector 5, compressing the return spring 23. Then, drag the replacement head 21 to separate it from the connector 5. Insert the replacement head 21 from the new spray hose 9 into the connector 5, and then drag the magnetic ring 24 away from the magnetic plate 25, causing the return spring 23 to return to its original position. The trapezoidal block 22 is inserted into the spray hose 9 to fix the spray hose 9, thereby facilitating the replacement of the spray hose 9 as much as possible. A sealing ring 29 is set to seal the connection head 5 and the replacement head 21. The replacement head 21 is fixed by the fixing ring 26, the limiting rod 27, and the limiting ring 28. Dragging the magnetic ring 24 lifts the limiting rod 27, thereby fixing the replacement head 21. Rotating the operating turntable 39 causes the gear 35 to rotate, which moves the rack 34 in the grooved block 32, causing the semi-circular blocks 31 connected to the slider 36 to move closer to each other. The semi-circular blocks 31 on both sides move closer to each other, so that the rubber strip 33 of the semi-circular blocks 31 moves closer to the fire extinguisher 4, thereby clamping and fixing the fire extinguisher 4. The pin 37 is inserted into the positioning groove to limit the operation turntable 39. A tension spring 38 is set to assist in pulling the pin 37, thereby limiting the pin 37.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An indoor hand-push fire extinguisher, comprising a fire extinguishing canister (4) mounted on a handcart (1), characterized in that: The upper end of the fire extinguisher (4) is fixedly connected to a connector (5), a safety pin (7) is provided on the front of the connector (5), a rotating handwheel (8) is provided on the inner wall of the connector (5), a convenient replacement component (2) is provided on the right end of the connector (5), a support frame (6) is fixedly connected to the lower end of the trolley (1), the convenient replacement component (2) includes a replacement head (21) slidably connected to the inner wall of the connector (5), a spray hose (9) is fixedly connected to the right end of the replacement head (21), a plurality of evenly distributed trapezoidal blocks (22) are slidably inserted into the inner wall of the connector (5), and a return spring (23) is fixedly connected between the trapezoidal blocks (22) and the connector (5).

2. The indoor hand-push fire extinguisher according to claim 1, characterized in that: A magnetic sheet (25) is fixed at the upper end of the trapezoidal block (22), and a magnetic ring (24) is slidably connected to the arc surface of the connector (5). The cross-section of the magnetic ring (24) is trapezoidal, and the magnetic ring (24) attracts the magnetic sheet (25).

3. The indoor hand-push fire extinguisher according to claim 2, characterized in that: A sealing ring (29) is provided between the connector (5) and the replacement head (21).

4. An indoor hand-push fire extinguisher according to claim 3, characterized in that: The arc surface of the replacement head (21) is fixedly connected to a fixing ring (26), and the left end of the fixing ring (26) is fixedly connected to an elastic limiting rod (27). The arc surface of the connector (5) is fixedly connected to a limiting ring (28), and the cross-section of the limiting ring (28) is triangular.

5. An indoor hand-push fire extinguisher according to claim 4, characterized in that: The right end of the handcart (1) is provided with a clamping and fixing component (3), which includes semi-circular blocks (31) on both sides of the arc surface of the fire extinguisher (4), and rubber strips (33) are provided on the inner wall of the semi-circular blocks (31).

6. An indoor hand-push fire extinguisher according to claim 5, characterized in that: The handcart (1) has a grooved block (32) fixedly connected to its arc surface. A rack (34) is slidably connected to the inner wall of the grooved block (32). A gear (35) meshes between the two racks (34). The gear (35) is rotatably connected to the grooved block (32) via a rotating shaft. An operating turntable (39) is provided on the back of the grooved block (32). The operating turntable (39) is fixed to the rotating shaft. A slider (36) is slidably connected to the inner wall of the grooved block (32). The slider (36) is fixed to the semi-circular block (31). The slider (36) is fixed to the rack (34).

7. An indoor hand-push fire extinguisher according to claim 6, characterized in that: The front of the operating turntable (39) is slidably inserted with a pin (37), and the front of the slotted block (32) is provided with a plurality of evenly distributed positioning slots, and the inner wall of the positioning slot is provided with protrusions.

8. An indoor hand-push fire extinguisher according to claim 7, characterized in that: A tension spring (38) is fixedly connected to one side of the pin (37), and the other end of the tension spring (38) is fixed to the operating turntable (39).

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