Carbon dioxide fire extinguisher

Abstract

The utility model provides a carbon dioxide fire extinguisher, which relates to the technical field of fire extinguishers and comprises a steel cylinder, a footstand, an extension pipe, a push-pull spring and a pressure spring, a valve is mounted at the top end of the steel cylinder, a siphon is mounted at an air inlet of the valve, a hose is mounted on an air outlet of the valve, and a handheld cylinder is screwed at the tail end of the hose; the top end of the push-pull spring is welded to the lower side face of the steel cylinder, a pressing disc is welded to the bottom end of the push-pull spring, and a connecting rod is hinged to the outer side face of the pressing disc and hinged to the footstand. The bottom end of the extension pipe is screwed with a spraying barrel through a thread; a steel cylinder is welded to the top end of the pressure spring, and a piston plate is welded to the bottom end of the pressure spring. Through arrangement of an extension pipe, a handheld cylinder, a pressure spring and a piston plate, the distance between the hand and a fire source is increased, the air pressure spraying efficiency of carbon dioxide gas is ensured, and the problems that according to a traditional fire extinguisher, a hand holds a spraying cylinder to be close to a flame area, the hand is burnt, and the gas outlet speed is reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire extinguishers, and more specifically, particularly relates to a carbon dioxide fire extinguisher. Background Art

[0002] A carbon dioxide fire extinguisher is a high-pressure steel cylinder that extinguishes a fire by releasing carbon dioxide gas. A spray bucket connected by a hose is aimed at the combustion area for spraying. When the content of carbon dioxide in the combustion area reaches 30%-50% in the air, the combustion can be extinguished, mainly playing a role in flame asphyxiation. At present, for traditional carbon dioxide fire extinguishers, people need to hold the spray barrel by hand and aim it at the flame area for spraying and extinguishing work. Since the spray barrel is close to the flame area, the hand holding the spray barrel will also be close to the flame area, which is extremely easy to cause hand burns. In addition, as the carbon dioxide gas is consumed, the pressure inside the steel cylinder will gradually decrease, the spraying degree of the carbon dioxide gas will decline, and the gas outlet speed will decrease, affecting the fire extinguishing efficiency. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a carbon dioxide fire extinguisher to solve the problems that hand burns are easily caused when holding the spray barrel of a traditional fire extinguisher close to the flame area and the gas outlet speed decreases.

[0004] The utility model provides a carbon dioxide fire extinguisher, including a steel cylinder; a valve is installed at the top end of the steel cylinder, a siphon tube is installed at the air inlet of the valve, a hose is installed at the air outlet of the valve, a hand-held cylinder is screwed at the end of the hose, a handle is bonded to the outer side of the hand-held cylinder, a base is welded and connected to the bottom end of the steel cylinder, a support rod is welded and connected to the center position of the bottom end of the steel cylinder, and a clamp is welded and connected to the outer side of the steel cylinder; it further includes a footrest, an extension tube, a push-pull spring and a pressure spring; the top end of the push-pull spring is welded and connected to the lower side of the steel cylinder, the bottom end of the push-pull spring is welded and connected to a pressure plate, a connecting rod is hinged to the outer side of the pressure plate, and the connecting rod is hinged to the footrest; the bottom end of the extension tube is screwed with a spray barrel; the top end of the pressure spring is welded and connected to the steel cylinder, and the bottom end of the pressure spring is welded and connected to a piston plate.

[0005] In at least some embodiments, a threaded structure is provided at a position close to the top end on the inner side of the extension tube, a ring plate is provided on the outer side of the extension tube, and vertical lines are densely arranged on the outer side of the ring plate.

[0006] In at least some embodiments, a threaded structure is provided on the outer side of the hand-held cylinder, and the threaded structure on the inner side of the extension tube is meshed and connected to the threaded surface on the outer side of the hand-held cylinder.

[0007] In at least some embodiments, the number of the footrests is six groups, the footrests are distributed in a circular array around the central axis of the base, and each group of footrests is a trapezoidal structure.

[0008] In at least some embodiments, the base is a cylindrical structure that is penetrated from top to bottom. Six groups of grooves are provided at a position near the bottom end on the outer side surface of the base. A sliding groove is provided on the inner side surface of each group of grooves. The convex blocks on the left side surface and the right side surface of the footrest are embedded in the sliding groove structure of the base.

[0009] In at least some embodiments, a through-hole structure that is penetrated from top to bottom is provided at the central position of the upper side surface of the piston plate. An annular groove is provided on the inner side surface of the through-hole. A sealing rubber ring is provided inside the annular groove. Two groups of annular grooves are provided on the outer side surface of the piston plate. A sealing rubber ring is bonded inside the annular groove. The sealing rubber ring in the annular groove of the piston plate is attached to the inner wall of the steel cylinder and the outer wall of the siphon tube.

[0010] In at least some embodiments, a convex column is provided at the central position of the upper side surface of the pressure plate. A circular hole groove is provided on the upper side surface of the convex column. The support rod is slidably connected in the circular hole groove of the pressure plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, through the threaded meshing transmission structure formed by the thread on the outer side surface of the handheld cylinder and the thread on the inner side surface of the extension tube, the extension tube can rotate and slide on the outer side surface of the handheld cylinder, realizing the combined telescopic adjustment work of the extension tube and the handheld cylinder, increasing the distance between the hand and the fire source, and avoiding the situation of direct hand-held spray cylinder near the fire source causing high-temperature burns.

[0013] 2. In the utility model, using the piston structure formed by the pressure spring and the piston plate inside the steel cylinder, when the carbon dioxide gas inside the steel cylinder is ejected, the pressure spring pushes the piston plate to slide directionally along the siphon tube and inside the steel cylinder, reducing the internal space volume of the carbon dioxide inside the steel cylinder, maintaining the carbon dioxide gas pressure level, and ensuring the ejection efficiency of the carbon dioxide gas.

[0014] 3. In the utility model, the sliding link motion mechanism formed by the push-pull spring pulling and pushing the pressure plate connecting rod and the footrest. When the pressure plate is placed on the ground, the six groups of footrests slide out synchronously along the groove structure of the base respectively, and the footrests support the steel cylinder, realizing the stable placement of the steel cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model.

[0016] Figure 2 is a front view structural diagram of the utility model.

[0017] Figure 3 is a top view structural diagram of the utility model.

[0018] Figure 4 is a bottom view structural diagram of the utility model.

[0019] Figure 5 It is a schematic diagram of the upward side view structure of the present utility model.

[0020] Figure 6 It is a schematic diagram of the front view sectional structure of the present utility model.

[0021] Figure 7 It is the Figure 6 Schematic diagram of the enlarged structure of part A in the present utility model.

[0022] Figure 8 It is the Figure 6 Schematic diagram of the enlarged structure of part B in the present utility model.

[0023] Reference numerals: 1, valve; 2, cylinder; 3, footrest; 4, base; 5, hose; 6, handle; 7, hand-held cylinder; 8, extension pipe; 9, clamp; 10, spray cylinder; 11, connecting rod; 12, pressure plate; 13, support rod; 14, push-pull spring; 15, siphon tube; 16, piston plate; 17, pressure spring. Specific embodiments

[0024] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] As Figures 1 - 8 shown, the present utility model provides a carbon dioxide fire extinguisher, including a cylinder 2; a valve 1 is installed at the top of the cylinder 2, a siphon tube 15 is installed at the air inlet of the valve 1, a hose 5 is installed at the air outlet of the valve 1, the end of the hose 5 is screwed and connected with a hand-held cylinder 7, a handle 6 is adhered to the outer side surface of the hand-held cylinder 7, a base 4 is welded and connected to the bottom end of the cylinder 2, a support rod 13 is welded and connected to the center position of the bottom end of the cylinder 2, and a clamp 9 is welded and connected to the outer side surface of the cylinder 2; it is characterized in that: it further includes a footrest 3, an extension pipe 8, a push-pull spring 14 and a pressure spring 17; the top end of the push-pull spring 14 is welded and connected to the lower side surface of the cylinder 2, the bottom end of the push-pull spring 14 is welded and connected with a pressure plate 12, the outer side surface of the pressure plate 12 is hinged with a connecting rod 11, and the connecting rod 11 is hinged with the footrest 3; the bottom end of the extension pipe 8 is screwed and connected with a spray cylinder 10; the top end of the pressure spring 17 is welded and connected with the cylinder 2, and the bottom end of the pressure spring 17 is welded and connected with a piston plate 16.

[0026] When this utility model conducts the fire extinguishing work of a carbon dioxide fire extinguisher, first manually turn the ring plate structure on the outer side of the extension tube 8 to make the extension tube 8 rotate. Since the thread on the inner side of the extension tube 8 meshes with the thread on the outer side of the hand-held cylinder 7, the extension tube 8 rotates and slides along the hand-held cylinder 7. According to the safe distance from the fire source, adjust the extension tube 8 to an appropriate extended position on the outer side of the hand-held cylinder 7 to increase the distance from the fire source and keep the hand away from the combustion area. Then hold the handle 6 with one hand and open the valve 1 with the other hand. The carbon dioxide gas passes through the siphon tube 15, successively through the valve 1, the hose 5, the hand-held cylinder 7, and the extension tube 8, and finally is ejected from the nozzle 10. When the carbon dioxide gas is ejected, the pressure spring 17 pushes the piston plate 16 to move downward along the inner wall of the steel cylinder 2, reducing the volume of the carbon dioxide gas storage space, maintaining the gas pressure of the carbon dioxide gas, and ensuring the spraying efficiency of the carbon dioxide gas. When the carbon dioxide fire extinguisher is placed on the ground, the base 4 contacts the ground, and the ground reversely pushes the pressure plate 12 to move upward along the support rod 13 against the elastic force of the push-pull spring 14. At this time, the pressure plate 12 pushes the footrest 3 to extend outward along the groove of the base 4 through the articulated connecting rod 11. The six groups of footrests 3 stably support the steel cylinder 2. When the carbon dioxide fire extinguisher is lifted off the ground, the push-pull spring 14 pushes the pressure plate 12 to move downward along the support rod 13. The pressure plate 12 synchronously pulls the six groups of connecting rods 11, and the connecting rods 11 pull the footrests 3 to retract inward along the groove of the base 4.

[0027] In the embodiment of the present disclosure, a thread structure is provided at a position near the top end on the inner side of the extension tube 8. A ring plate is provided on the outer side of the extension tube 8, and vertical lines are densely arranged on the outer side of the ring plate. The friction is increased through the vertical lines to facilitate turning the extension tube 8 for adjustment.

[0028] In the embodiment of the present disclosure, a thread structure is provided on the outer side of the hand-held cylinder 7. The thread structure on the inner side of the extension tube 8 is meshed and connected to the thread surface on the outer side of the hand-held cylinder 7, so that during the rotation of the extension tube 8, the extension tube 8 performs telescopic extension adjustment work along the hand-held cylinder 7 to increase the inactivation distance.

[0029] In the embodiment of the present disclosure, the number of the footrests 3 is six groups. The footrests 3 are distributed in a circular array around the central axis of the base 4. Each group of footrests 3 is a trapezoidal structure, and the footrests 3 stably support the base 4.

[0030] In the embodiment of the present disclosure, the base 4 is a cylindrical structure that is penetrated up and down. Six groups of grooves are provided at a position near the bottom end on the outer side of the base 4. A chute is provided on the inner side of each group of grooves. The convex blocks on the left and right sides of the footrest 3 are embedded in the chute structure of the base 4. The base 4 supports the six groups of footrests 3 in the grooves and enables the footrests 3 to slide directionally along the chute structure of the base 4.

[0031] In the embodiments of the present disclosure, a through-hole structure penetrating up and down is provided at the center position of the upper side surface of the piston plate 16. An annular groove is provided on the inner side surface of the through-hole, and a sealing rubber ring is provided inside the annular groove. Two groups of annular grooves are provided on the outer side surface of the piston plate 16, and a sealing rubber ring is bonded inside the annular groove. The sealing rubber ring in the annular groove of the piston plate 16 fits on the inner wall of the cylinder 2 and the outer wall of the siphon tube 15, so as to realize spatial sealing isolation between the bottom and the top of the piston plate 16 and prevent the leakage of carbon dioxide gas.

[0032] In the embodiments of the present disclosure, a convex column is provided at the center position of the upper side surface of the pressure plate 12, and a circular hole groove is provided on the upper side surface of the convex column. The support rod 13 is slidably connected in the circular hole groove of the pressure plate 12, so that the pressure plate 12 can stably slide along the support rod 13 under the traction of the push-pull spring 14, thereby enabling the pressure plate 12 to synchronously drive the six groups of feet 3 to telescopically slide in the grooves of the base 4.

[0033] The installation methods, connection methods or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc. And the specific structures, models and coefficient indexes of all its components are its own technologies, and any implementation that can achieve its beneficial effects can be carried out. The above-mentioned valve 1, cylinder 2, and siphon tube 15 are all common devices on the market. When purchased and used, they only need to be connected according to the user manual purchased together to be used, so they will not be elaborated here.

[0034] The technical solution of the present utility model is not limited to the scope of the embodiments of the present utility model. The technical content not described in detail in the present utility model is well-known technology.

Claims

1. A carbon dioxide fire extinguisher, comprising a steel cylinder (2); a valve (1) is installed at the top of the steel cylinder (2), a siphon tube (15) is installed at the air inlet of the valve (1), a hose (5) is installed at the air outlet of the valve (1), the end of the hose (5) is screwed and connected with a hand-held cylinder (7), a handle (6) is adhesively bonded to the outer side surface of the hand-held cylinder (7), a base (4) is welded and connected to the bottom end of the steel cylinder (2), a support rod (13) is welded and connected to the center position of the bottom end of the steel cylinder (2), and a clamp (9) is welded and connected to the outer side surface of the steel cylinder (2); characterized in that: It also includes a footrest (3), an extension tube (8), a push-pull spring (14) and a pressure spring (17); the top end of the push-pull spring (14) is welded to the lower side of the cylinder (2), the bottom end of the push-pull spring (14) is welded with a pressure plate (12), a connecting rod (11) is hinged to the outer side of the pressure plate (12), and the connecting rod (11) is hinged to the footrest (3); the bottom end of the extension tube (8) is screwed with a spray tube (10); the top end of the pressure spring (17) is welded to the cylinder (2), and the bottom end of the pressure spring (17) is welded to a piston plate (16).

2. The carbon dioxide fire extinguisher according to claim 1, wherein: The inner side of the extension tube (8) near the top end is provided with a threaded structure, the outer side of the extension tube (8) is provided with a ring plate, and the outer side of the ring plate is densely covered with vertical lines.

3. The carbon dioxide fire extinguisher according to claim 1, characterized in that: The outer side of the hand-held tube (7) is provided with a threaded structure, and the threaded structure on the inner side of the extension tube (8) is meshed and connected to the threaded surface on the outer side of the hand-held tube (7).

4. The carbon dioxide fire extinguisher according to claim 1, characterized in that: The number of the footrests (3) is six groups, and the footrests (3) are distributed in a circular array around the central axis of the base (4), and each group of footrests (3) is of a trapezoidal structure.

5. The carbon dioxide fire extinguisher according to claim 1, wherein: The base (4) is a cylindrical structure that is penetrated up and down. Six groups of grooves are provided at a position near the bottom end of the outer side of the base (4). A chute is provided on the inner side of each group of grooves, and the convex blocks on the left and right sides of the footrest (3) are embedded in the chute structure of the base (4).

6. The carbon dioxide fire extinguisher according to claim 1, characterized in that: A through-hole structure that penetrates up and down is provided at the central position on the upper side of the piston plate (16). An annular groove is provided on the inner side of the through-hole. A sealing rubber ring is provided inside the annular groove. Two annular grooves are provided on the outer side of the piston plate (16), and a sealing rubber ring is bonded inside the annular groove. The sealing rubber ring in the annular groove of the piston plate (16) fits on the inner wall of the cylinder (2) and the outer wall of the siphon tube (15).

7. The carbon dioxide fire extinguisher according to claim 1, wherein: A convex column is provided at the central position on the upper side of the pressure plate (12), a circular hole groove is provided on the upper side of the convex column, and the support rod (13) is slidably connected in the circular hole groove of the pressure plate (12).

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