Portable fire extinguisher

Abstract

The utility model relates to the technical field of fire extinguishing, in particular to a portable fire extinguisher. Comprising a bottle body, a device head, a spray pipe, a pressure gauge, a pressure sensor, a handle and a switch assembly, a bottle opening of the bottle body is connected with the device head, the upper end of the device head is connected with the handle, the device head is further connected with the spray pipe, the pressure gauge and the pressure sensor, and the pressure gauge and the pressure sensor are arranged on the two sides of the spray pipe. The switch assembly penetrates through the device head, the switch assembly is used for controlling the communication condition of the spray pipe and the interior of the bottle body, the handle is used for driving the switch assembly, and the pressure sensor and the pressure gauge are used for measuring the pressure in the bottle body; the device head is communicated with the pressure sensor through a linear air guide pipe; when the pressure sensor carries out pressure measurement, the pressure loss is reduced, so that the pressure measurement precision can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing, in particular to a portable fire extinguisher. Background Art

[0002] Fire extinguishers are used to put out fires by placing chemicals in them. Fire extinguishers are one of the most common firefighting equipment and are found in public places or places where fires may occur. Different types of fire extinguishers have different contents. There are many types of fire extinguishers. According to their mobility, they can be divided into: portable and cart-type; according to the power source of the fire extinguishing agent, they can be divided into: gas cylinder type, pressure storage type, chemical reaction type; according to the fire extinguishing agent filled, they can be divided into: foam, dry powder, halogenated hydrocarbons, carbon dioxide, clean water, etc.

[0003] The prior art CN211536312U discloses an intelligent fire extinguisher, including a fire extinguisher head, a pressure gauge, an intelligent detector, a first connecting pipe and a second connecting pipe. The fire extinguisher head is connected to the interior of the fire extinguisher bottle body. A pressure gauge connecting hole and a detector connecting hole connected to the interior of the fire extinguisher head are provided on the fire extinguisher head. The pressure gauge is connected to the pressure gauge connecting hole through the first connecting pipe, and the intelligent detector is connected to the detector connecting hole through the second connecting pipe. The second connecting pipe is an L-shaped connecting pipe.

[0004] However, the above-mentioned fire extinguisher uses an L-shaped connecting pipe to connect the inside of the bottle body with the intelligent detector, which will cause pressure loss when measuring the pressure, resulting in inaccurate pressure measurement inside the bottle body.

[0005] Therefore, there is an urgent need to provide a portable fire extinguisher that can improve the pressure measurement accuracy of the fire extinguisher bottle compared to the prior art. Utility Model Content

[0006] The utility model solves the technical problems existing in the prior art and provides a portable fire extinguisher.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A portable fire extinguisher, comprising a bottle body, an extinguisher head, a nozzle, a pressure gauge, a pressure sensor, a handle and a switch assembly, wherein the bottle mouth of the bottle body is connected to the extinguisher head, the upper end of the extinguisher head is connected to the handle, the extinguisher head is also connected to the nozzle, the pressure gauge and the pressure sensor, the pressure gauge and the pressure sensor are arranged on both sides of the nozzle, the switch assembly is arranged through the extinguisher head, the switch assembly is used to control the communication between the nozzle and the inside of the bottle body, the handle is used to drive the switch assembly, and the pressure sensor and the pressure gauge are used to measure the internal pressure of the bottle body;

[0009] The instrument head is connected to the pressure sensor through a linear air guide tube.

[0010] Furthermore, the pressure sensor is sleeved on the end of the linear airway tube, and the pressure sensor is threadedly connected to the linear airway tube.

[0011] Furthermore, the pressure sensor includes a bottom shell, an outer shell, a PCB board, a pressure sensing chip and a main control chip. One end of the bottom shell is threadedly connected to the linear air duct, and the other end of the bottom shell is threadedly connected to the outer shell. The PCB board, the pressure sensing chip and the main control chip are all arranged inside the outer shell. The pressure sensing chip and the main control chip are electrically connected to the PCB board. An air intake channel is provided inside the bottom shell, one end of the air intake channel is connected to the inside of the linear air duct, and the other end of the air intake channel corresponds to the pressure sensing chip.

[0012] Furthermore, the PCB board is electrically connected to the battery.

[0013] Furthermore, the main control chip is connected to an Internet of Things module.

[0014] Further, the device head includes a first steering portion, a second steering portion, a third steering portion, a fourth steering portion and a guide portion, the first steering portion is connected to the bottle body, the second steering portion is connected to the pressure sensor, the third steering portion is connected to the pressure gauge, the fourth steering portion is connected to the nozzle, and the switch assembly is arranged through the guide portion;

[0015] A first air flow channel is provided in the wall of the second turning portion, and the pressure sensor is communicated with the interior of the bottle body through the first air flow channel; a second air flow channel is provided in the wall of the third turning portion, and the pressure gauge is communicated with the interior of the bottle body through the second air flow channel;

[0016] A fourth airflow channel is provided inside the fourth turning portion, a third airflow channel is provided inside the guide portion, one end of the fourth airflow channel is connected to the third airflow channel, and the other end is connected to the nozzle, and the switch assembly is movably connected in the third airflow channel.

[0017] Furthermore, the switch assembly includes a conductive piece, which is movably connected in the third airflow channel. The conductive piece includes a first cylindrical portion, a second cylindrical portion and a third cylindrical portion. The first cylindrical portion extends out of the upper end of the guide portion, and the third cylindrical portion is located at the lower end of the guide portion. The outer diameters of the first cylindrical portion and the second cylindrical portion are both smaller than the inner diameter of the third airflow channel, and the outer diameter of the third cylindrical portion is larger than the inner diameter of the third airflow channel.

[0018] Furthermore, the switch assembly also includes a spring, which is sleeved on the outside of the second cylindrical portion, the upper end of the spring is fixedly connected to the inner wall of the guide portion, and the lower end of the spring is fixedly connected to the upper wall of the third cylindrical portion.

[0019] Furthermore, the handle includes a fixed part and a rotating part, the fixed part is fixedly connected to the instrument head, the rotating part is rotatably connected to the fixed part, a torsion spring is provided between the rotating part and the fixed part, the guide part passes through the fixed part, and the rotating part drives the conductive member to move along the axial direction of the guide part.

[0020] Furthermore, a one-way valve is serially connected to the linear air guide tube.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) The utility model connects the pressure sensor with the inside of the fire extinguisher through a linear air duct. When the pressure sensor measures pressure, the pressure loss is reduced, thereby improving the pressure measurement accuracy.

[0023] (2) The utility model provides a pressure sensor that is connected to an external IoT module, so that the internal air pressure of the fire extinguisher is transmitted to the external IoT module, which makes it convenient for the fire extinguisher administrator to check the internal air pressure status of the fire extinguisher. When the internal air pressure of the fire extinguisher is too low, the fire extinguisher can be handled in time to eliminate the hidden danger that the fire extinguisher cannot extinguish the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of the utility model.

[0025] Figure 2 It is a left view of the utility model.

[0026] Figure 3 It is a three-dimensional diagram of the display head structure of the utility model.

[0027] Figure 4 It is a cross-sectional view of the internal structure of the display head of the utility model.

[0028] Figure 5 It is a cross-sectional view showing the internal structure of the pressure sensor of the utility model.

[0029] Description of reference numerals:

[0030] 1. Bottle body; 2. Spray pipe; 3. Nozzle; 4. Handle; 41. Fixed part; 42. Rotating part; 5. Pressure gauge; 6. Pressure sensor; 61. Bottom shell; 611. First connecting part; 612. Second connecting part; 613. First air inlet part; 614. Second air inlet part; 615. Air inlet channel; 62. Shell; 63. PCB board; 64. Battery; 65. Battery rack; 66. Bolt; 67. Pressure sensing chip; 68. Main control chip; 7. Head; 71. First steering part; 72. Second steering part; 73. Third steering part; 74. Fourth steering part; 75. Guide part; 76. First air flow channel; 77. Second air flow channel; 78. Third air flow channel; 79. Fourth air flow channel; 8. Safety pin; 9. Conducting member; 91. First cylindrical part; 92. Second cylindrical part; 93. Third cylindrical part; 10. Spring; 11. Linear air guide tube. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model. It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing the utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] like Figure 1 , Figure 2 As shown, the utility model provides a portable fire extinguisher, including a bottle body 1, a nozzle 2, a nozzle 3, a handle 4, a pressure gauge 5, a pressure sensor 6, a head 7 and a switch assembly. The bottle body 1 is a hollow structure with an upper opening, and fire extinguishing gas is placed inside the bottle body 1. A threaded connector head 7 is provided at the upper end of the bottle body 1, and the switch assembly is movably connected inside the head 7. The upper part of the head 7 is connected to the handle 4, and the head 7 is also connected to the pressure gauge 5, the pressure sensor 6 and the nozzle 2. The pressure gauge 5, the pressure sensor 6 and the nozzle 2 are all arranged between the handle 4 and the bottle body 1, and the pressure sensor 6 and the pressure gauge 5 are arranged on both sides of the nozzle 2. The nozzle 2 is connected to the nozzle 3 at one end away from the bottle body 1; the switch assembly is used to control the connection between the inside of the bottle body 1 and the nozzle 2, and the handle 4 drives the switch assembly; the pressure gauge 5 and the pressure sensor 6 are used to measure the pressure of the gas inside the bottle body 1.

[0033] like Figure 3 , Figure 4As shown, the head 7 includes a first turning portion 71, a second turning portion 72, a third turning portion 73, a fourth turning portion 74 and a guide portion 75. The outer wall of the first turning portion 71 is provided with an external thread, the first turning portion 71 is hollow, the first turning portion 71 is threadedly connected to the bottle mouth of the bottle body 1 through the external thread, the first turning portion 71 is communicated with the interior of the bottle body 1, and a sealing ring is sleeved on the outside of the first turning portion 71, the sealing ring is used to ensure the air tightness between the first turning portion 71 and the bottle body 1; the second turning portion 72 is hollow, and a first air flow channel 76 is provided in the wall of the second turning portion 72, the second turning portion 72 is communicated with the interior of the first turning portion 71 through the first air flow channel 76, the end of the second turning portion 72 is connected to the linear air guide pipe 11, and the linear air guide pipe 11 is away from the second turning portion One end of the turning portion 72 is threadedly connected to the pressure sensor 6, and a one-way valve is connected in series on the linear air guide tube 11, and the one-way valve is used to control the on and off of the pressure sensor 6; the third turning portion 73 is hollow, and a second air flow channel 77 is provided in the wall of the third turning portion 73, and the third turning portion 73 is connected to the interior of the bottle body 1 through the second air flow channel 77, and the end of the third turning portion 73 is connected to the pressure gauge 5; the fourth turning portion 74 is provided with a fourth air flow channel 79, and the end of the fourth turning portion 74 is connected to the nozzle 2, and a third air flow channel 78 is provided in the guide portion 75, and the third air flow channel 78 is connected to the fourth air flow channel 79, and the switch assembly is used to control the connection between the third air flow channel 78 and the interior of the first guide portion 71, thereby controlling the conduction and closing of the fourth air flow channel 79. The switch assembly has two states, namely, an open state and a closed state; when the switch assembly is in the open state, the interior of the first turning portion 71, the third airflow channel 78, and the fourth airflow channel 79 are connected in sequence, and the fire extinguishing gas in the bottle body 1 passes through the third airflow channel 78, the fourth airflow channel 79, and the nozzle 2 in sequence and is sprayed from the nozzle 3 to the position to be extinguished; when the switch assembly is in the closed state, the third airflow channel 78 is not connected to the interior of the first turning portion 71.

[0034] The switch assembly includes a conducting member 9 and a spring 10. The conducting member 9 is arranged through the third air flow channel 78. The conducting member 9 includes a first cylindrical portion 91, a second cylindrical portion 92 and a third cylindrical portion 93 that are connected in one piece. The first cylindrical portion 91 extends out of the upper end of the third air flow channel 78. The outer diameter of the third cylindrical portion 93 is greater than the inner diameter of the third air flow channel 78. The outer diameters of the first cylindrical portion 91 and the second cylindrical portion 92 are both smaller than the inner diameter of the third air flow channel 78. A sealing ring is fixedly connected to the upper wall of the third cylindrical portion 93. The sealing ring is arranged at the end of the upper wall of the third cylindrical portion 93. The sealing ring and the third cylindrical portion 93 are located at the lower end of the third air flow channel 78. When the switch assembly is in a closed state, the sealing ring abuts against the lower end of the third air flow channel 78. When the switch assembly is in an open state, the sealing ring is separated from the lower end of the third air flow channel 78. A spring 10 is sleeved on the outside of the second cylindrical portion 92. The upper end of the spring 10 is fixedly connected to the inner wall of the third air flow channel 78, and the lower end of the spring 10 is fixedly connected to the upper wall of the third cylindrical portion 93. After the handle 4 drives the conducting member 9 to move downward, the sealing ring is separated from the lower end of the third air flow channel 78, the spring 10 is stretched, and the fire extinguishing gas can be sprayed to the position to be extinguished through the nozzle 3 to perform the fire extinguishing operation; the handle 4 is reset, and the conducting member 9 moves upward under the action of the spring 10, the sealing ring presses against the lower end of the third air flow channel 78, the third air flow channel 78 is closed, and then the fire extinguisher is closed.

[0035] The handle 4 includes a fixed portion 41 and a rotating portion 42. One end of the fixed portion 41 is fixedly connected to the upper wall of the fourth turning portion 74. The rotating portion 42 is rotatably connected to the fixed connection between the fixed portion 41 and the fourth turning portion 74. A torsion spring is provided at the connection between the rotating portion 42 and the fixed portion 41. The torsion spring is provided for resetting the rotating portion 42. A safety pin 8 is passed through the fixed portion 41 and the rotating portion 42. The safety pin 8 is used to lock the fixed portion 41 and the rotating portion 42. The rotating portion 42 can only be driven when the safety pin 8 is pulled out; the guide portion 75 is provided through the fixed portion 41, and the first cylindrical portion 91 is located below the rotating portion 42. The user drives the rotating portion 42 to rotate in the direction close to the fixed portion 41. During the rotation process, the rotating portion 42 presses down the conducting member 9, so that the third air flow channel 78 is connected to the inside of the first turning portion 71, so that the fire extinguisher is turned on; when no force is applied to the rotating portion 42, the rotating portion 42 is reset under the action of the torsion spring, and the conducting member 9 is reset under the action of the spring 10, so that the fire extinguisher is turned off.

[0036] like Figure 5As shown, the pressure sensor 6 includes a bottom shell 61, a shell 62, a PCB board 63, a pressure sensing chip 67 and a main control chip 68. The bottom shell 61 includes a first connection part 611, a second connection part 612, a first air inlet part 613 and a second air inlet part 614. The outer wall of the first connection part 611 is provided with an external thread. The shell 61 is a hollow structure with an open end. The first connection part 611 is threadedly connected to the shell 62 through an external thread. The second connection part 612 is provided with an internal thread. The end of the linear air guide tube 11 close to the pressure sensor 6 is provided with an external thread. The second connection part 612 is sleeved on one end of the linear air guide tube 11. The second connection part 612 is threadedly connected to the linear air guide tube 11. The first air inlet part 613 is integrally connected to the inside of the second connection part 612. 613, a second air inlet portion 614 is integrally connected to the interior of the first connecting portion 611, the first connecting portion 611, the second connecting portion 612, the first air inlet portion 613, and the second air inlet portion 614 are all coaxially arranged, an air inlet channel 615 is arranged inside the first air inlet portion 613, the second air inlet portion 614 is a hollow structure with openings at both ends, one end of the air inlet channel 615 is communicated with the interior of the linear air guide pipe 11, and the other end of the air inlet channel 615 passes through the second connecting portion 612 and is communicated with the interior of the second air inlet portion 614, a sealing ring is sleeved on the outside of the first air inlet portion 613, and the end of the linear air guide pipe 11 is in contact with the sealing ring.

[0037] The PCB board 63, the pressure sensing chip 67 and the main control chip 68 are all arranged inside the shell 62. The pressure sensing chip 67 and the main control chip 68 are electrically connected to the side wall of one side of the PCB board 63. The PCB board 63 is connected to the first connecting part 611 of the bottom shell 61 by a bolt 66. The pressure sensing chip 67 is arranged corresponding to the second air inlet part 614. The pressure sensing chip 67 is sleeved with a sealing ring on the outside, and the sealing ring abuts against the second air inlet part 614. By tightening the bolt 66, the pressure sensing chip 67 can be pressed against the second air inlet part 614 to ensure the air tightness between the second air inlet part 614 and the pressure sensing chip 67; the side of the PCB board 63 away from the pressure sensing chip 67 is electrically connected to the battery 64, and the battery 64 is installed in the battery rack 65. The battery rack 65 is electrically connected to the battery 64, and the battery rack 65 is electrically connected to the PCB board 63. The battery 64 supplies power to the PCB board 63; the main control chip 68 is NB IoT, the pressure sensing chip 67 is a dedicated chip for the pressure sensor 6 in the prior art. The gas inside the bottle body 1 acts on the pressure sensing chip 67 through the first air flow channel 76, the linear air duct 11, and the air inlet channel 615 in sequence. The pressure sensing chip 67 transmits the pressure signal to the main control chip 68, and the main control chip 68 transmits the pressure signal to the external IoT module for information collection. In the process in which the gas in the bottle body 1 acts on the pressure sensing chip 67 through the linear air duct 11, the pressure loss can be reduced, thereby improving the pressure measurement accuracy.

[0038] The utility model provides a portable fire extinguisher with a working principle: when using the fire extinguisher, unplug the safety pin 8, press the rotating part 42 downward, so that the rotating part 42 drives the conducting part 9 to move downward, so that the third air flow channel 78 is connected with the inside of the bottle body 1, and the nozzle 3 is aimed at the position to be extinguished. The fire extinguishing gas is sprayed to the position to be extinguished through the nozzle 3 to perform the fire extinguishing operation. After the fire extinguishing is completed, the force on the rotating part 42 is removed, the rotating part 42 is reset under the action of the torsion spring, and the conducting part 9 is reset under the action of the spring 10, and then the safety pin 8 is inserted to close the fire extinguisher; the pressure gauge 5 and the pressure sensor 6 always measure the internal air pressure of the bottle body 1. The pressure gauge 5 is convenient for observing the internal air pressure of the bottle body 1 when in use, and the pressure sensor 6 transmits the internal air pressure of the bottle body 1 to the external Internet of Things module, so that the fire extinguisher administrator can check the air pressure status of the fire extinguisher.

[0039] The utility model provides a pressure sensor 6 and connects the pressure sensor 6 with an external Internet of Things module, so that the internal air pressure of the fire extinguisher is transmitted to the external Internet of Things module, which is convenient for the fire extinguisher administrator to check the internal air pressure status of the fire extinguisher. When the internal air pressure of the fire extinguisher is too low, the fire extinguisher can be handled in time to eliminate the hidden danger that the fire extinguisher cannot extinguish the fire; the pressure sensor 6 is connected to the inside of the fire extinguisher through a linear air duct 11 and the pressure sensor 6 is sleeved on one end of the linear air duct 11. When the pressure sensor measures the pressure, the pressure loss will be reduced, thereby achieving the improvement of the pressure measurement accuracy.

[0040] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A portable fire extinguisher, characterized in that: The device comprises a bottle body, a head, a nozzle, a pressure gauge, a pressure sensor, a handle and a switch assembly. The bottle mouth of the bottle body is connected to the head, the upper end of the head is connected to the handle, the head is also connected to the nozzle, the pressure gauge and the pressure sensor, the pressure gauge and the pressure sensor are arranged on both sides of the nozzle, the switch assembly is arranged through the head, the switch assembly is used to control the connection between the nozzle and the inside of the bottle body, the handle is used to drive the switch assembly, and the pressure sensor and the pressure gauge are used to measure the internal pressure of the bottle body; The instrument head is connected to the pressure sensor through a linear air guide tube.

2. A portable fire extinguisher according to claim 1, characterized in that: The pressure sensor is sleeved on the end of the linear airway tube, and the pressure sensor is threadedly connected to the linear airway tube.

3. A portable fire extinguisher according to claim 2, characterized in that: The pressure sensor includes a bottom shell, an outer shell, a PCB board, a pressure sensing chip and a main control chip. One end of the bottom shell is threadedly connected to the linear air duct, and the other end of the bottom shell is threadedly connected to the outer shell. The PCB board, the pressure sensing chip and the main control chip are all arranged inside the outer shell. The pressure sensing chip and the main control chip are electrically connected to the PCB board. An air intake channel is provided inside the bottom shell, one end of the air intake channel is connected to the inside of the linear air duct, and the other end of the air intake channel corresponds to the pressure sensing chip.

4. A portable fire extinguisher according to claim 3, characterized in that: The PCB board is electrically connected to the battery.

5. A portable fire extinguisher according to claim 3, characterized in that: The main control chip is connected to the Internet of Things module.

6. A portable fire extinguisher according to claim 1, characterized in that: The device head comprises a first turning part, a second turning part, a third turning part, a fourth turning part and a guide part, wherein the first turning part is connected to the bottle body, the second turning part is connected to the pressure sensor, the third turning part is connected to the pressure gauge, the fourth turning part is connected to the nozzle, and the switch assembly is arranged through the guide part; A first air flow channel is provided in the wall of the second turning portion, and the pressure sensor is communicated with the interior of the bottle body through the first air flow channel; a second air flow channel is provided in the wall of the third turning portion, and the pressure gauge is communicated with the interior of the bottle body through the second air flow channel; A fourth airflow channel is provided inside the fourth turning portion, a third airflow channel is provided inside the guide portion, one end of the fourth airflow channel is connected to the third airflow channel, and the other end is connected to the nozzle, and the switch assembly is movably connected in the third airflow channel.

7. A portable fire extinguisher according to claim 6, characterized in that: The switch assembly includes a conductive member, which is movably connected in the third airflow channel. The conductive member includes a first cylindrical portion, a second cylindrical portion and a third cylindrical portion. The first cylindrical portion extends out of the upper end of the guide portion, and the third cylindrical portion is located at the lower end of the guide portion. The outer diameters of the first cylindrical portion and the second cylindrical portion are both smaller than the inner diameter of the third airflow channel, and the outer diameter of the third cylindrical portion is larger than the inner diameter of the third airflow channel.

8. A portable fire extinguisher according to claim 7, characterized in that: The switch assembly also includes a spring, which is sleeved on the outside of the second cylindrical portion, the upper end of the spring is fixedly connected to the inner wall of the guide portion, and the lower end of the spring is fixedly connected to the upper wall of the third cylindrical portion.

9. A portable fire extinguisher according to claim 7, characterized in that: The handle includes a fixed part and a rotating part, the fixed part is fixedly connected to the instrument head, the rotating part is rotatably connected to the fixed part, a torsion spring is provided between the rotating part and the fixed part, the guide part passes through the fixed part, and the rotating part drives the conductive member to move along the axial direction of the guide part.

10. A portable fire extinguisher according to claim 1, characterized in that: A one-way valve is connected in series on the linear air guide pipe.

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