Fire-fighting sprinkler with alarm function triggered by magnetic induction

Abstract

A fire-fighting sprinkler with an alarm function triggered by magnetic induction, comprising a sprinkler body (1) and an alarm device (2). A plug (3) for plugging a water outlet (13) of the sprinkler body is provided on the sprinkler body, and a temperature-sensitive glass bead (4) abutting against the plug is further mounted on the sprinkler body. The alarm device comprises a housing (21) and an alarm circuit (22) mounted inside the housing, the housing being mounted on the sprinkler body, the alarm circuit being provided with an alarm switch (29), and the alarm switch being a magnetic induction switch (23). A trigger sheet (5) is further comprised, one end of the trigger sheet being provided with a clamped and pressed portion (51), and the clamped and pressed portion being clamped and fixed by the temperature-sensitive glass bead and the plug cooperatively; a permanent magnet (52) is mounted at the other end of the trigger sheet, the permanent magnet being arranged close to the magnetic induction switch, such that the magnetic induction switch is closed and the alarm circuit is in a non-triggered state. The fire-fighting sprinkler has the characteristics of having simple structure and reasonable design, involving simple assembly process, facilitating improvement of production efficiency, having high reliability and wide application range, etc.

Description

A fire sprinkler with magnetic induction trigger alarm function Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a fire-fighting sprinkler with a magnetic induction triggering alarm function. Background Art

[0002] There are various structures of fire sprinklers on the market now. For example, the technical solution described in Chinese patent application No. 202111325227X, entitled “A Fire Sprinkler with Alarm Function”, is that when in use, the water ejected from the water outlet of the sprinkler body touches the water-blocking end of the water-blocking lever, thereby pushing the water-blocking lever to rotate so that its pressing end presses the action trigger end of the alarm switch of the alarm. When the alarm switch is pressed and closed, the alarm circuit is triggered and activated, thereby realizing the alarm. However, such a structure has a large and outward-extending lever part located outside. It has high requirements for the surrounding environment during installation and is prone to accidental impact from the outside. Therefore, it is necessary to improve the existing products. Technical issues

[0003] The purpose of the utility model is to provide a fire sprinkler with a magnetic induction trigger alarm function, which has the advantages of simple structure, reasonable design, simple assembly process, and is conducive to improving production efficiency, high reliability and wide application range. Technical Solutions

[0004] The technical solution of the present utility model is achieved as follows: a fire sprinkler with a magnetic induction triggered alarm function, comprising a sprinkler body and an alarm, the sprinkler body being provided with a plug for sealing its water outlet, and the sprinkler body being further provided with temperature-sensitive glass beads for supporting the plug; the alarm comprising a shell and an alarm circuit installed in the shell, the shell being installed on the sprinkler body, and the alarm circuit being provided with an alarm switch; in particular, the alarm switch is a magnetic induction switch; further comprising a trigger piece; one end of the trigger piece being provided with a clamping portion, the clamping portion being clamped and fixed by the temperature-sensitive glass beads and the plug; the other end of the trigger piece being provided with a permanent magnet, the permanent magnet being arranged close to the magnetic induction switch, so that the magnetic induction switch is closed and the alarm circuit is in a non-triggered state.

[0005] This solution adopts a magnetic induction switch as the alarm switch of the alarm circuit; during use, the alarm circuit switches its state accordingly according to the signal of the magnetic induction switch; when there is no fire, under the action of the permanent magnet of the trigger piece, the magnetic induction switch is in a closed state and the alarm circuit is in a non-triggered state; when a fire occurs, the temperature-sensitive glass beads will break at a certain temperature, and then the temperature-sensitive glass beads will shatter under the action of water pressure, causing the plug to fall and the water in the fire pipe to spray out from the water outlet of the nozzle body. After the temperature-sensitive glass beads are broken, the trigger piece also falls with the plug, causing the permanent magnet to move away from the magnetic induction switch, so that the magnetic induction switch is in a disconnected state and the alarm circuit is triggered and started in a triggered state, thus realizing a fire alarm. Such a structure only requires the use of temperature-sensitive glass beads and plugs to clamp and fix the trigger piece. The assembly process is very simple, which greatly improves production efficiency. During application, after the temperature-sensitive glass beads are broken, the trigger piece falls under its own gravity, which can cause the alarm circuit to alarm. In case there is a problem with the fire water pressure at that location and there is only a low water pressure, this device can still accurately send out an alarm signal. Compared with the existing technology mentioned in the background technology, which relies on sufficiently high water pressure, this solution is more reliable.

[0006] Furthermore, one end of the trigger piece is bent to form the clamping portion, an embedding column is formed on the clamping portion, and a through hole is formed on the embedding column; an embedding recess is formed on the plug; the embedding column of the clamping portion is embedded in the embedding recess of the plug, and one end of the temperature-sensitive glass bead is inserted into the through hole of the embedding column.

[0007] Furthermore, one end of the trigger piece where the permanent magnet is mounted is bent to form a toggle portion.

[0008] Furthermore, the shell and the nozzle body are connected together by threads; a rotation positioning mechanism is also provided between the shell and the nozzle body; when the shell and the nozzle body are threadedly connected, the rotation positioning mechanism causes the shell and the nozzle body to be positioned relative to each other.

[0009] Furthermore, the rotational positioning mechanism includes a positioning protrusion and a positioning recess; the positioning recess is arranged on the nozzle body; an elastic deformation portion is formed on the shell, and the positioning protrusion is arranged on the elastic deformation portion of the shell; when the shell and the nozzle body are threadedly connected, the positioning protrusion is snapped into the positioning recess.

[0010] Furthermore, the outer surface of the shell is provided with a groove, the position of the groove corresponds to the position of the magnetic induction switch, and the permanent magnet is located in the groove.

[0011] Furthermore, a screw hole is provided on the nozzle body; a raised mounting cavity is formed on the outer surface of the shell, and an elongated hole connecting the inner and outer walls of the mounting cavity is formed on the shell. The elastic deformation portion is formed by forming the elongated hole, and a mounting stud is installed in the mounting cavity. The mounting stud of the shell is threadedly connected to the screw hole on the nozzle body; a tightening stud is also installed in the screw hole of the nozzle body, and the tightening stud is used to push the temperature-sensitive glass beads against the plug.

[0012] Furthermore, the alarm circuit also includes a main control MCU module, a communication module, a battery, an indicator light and a buzzer. The magnetic induction switch is used to control the main control MCU module, and the communication module, battery, indicator light and buzzer are all electrically connected to the main control MCU module.

[0013] Furthermore, a power switch is installed on the housing, and the power switch is electrically connected between the battery and the main control MCU module.

[0014] Furthermore, the magnetic induction switch is preferably a reed switch or a Hall switch.

[0015] Furthermore, a buzzer hole connecting the interior of the housing with the outside and a lamp hole for revealing the indicator light are provided on the housing.

[0016] Furthermore, the alarm is preferably installed below the nozzle body. The nozzle body can be a downward spray nozzle, a side spray nozzle, or an upward spray nozzle. Beneficial effects

[0017] The beneficial effects of the utility model include simple structure, reasonable design, simple assembly process, which is beneficial to improving production efficiency, high reliability and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a structural diagram of one embodiment.

[0019] FIG2 is a second structural diagram of the embodiment.

[0020] FIG3 is an enlarged structural diagram of part A in FIG2 .

[0021] FIG4 is a schematic diagram of the main structure of the embodiment.

[0022] FIG5 is a schematic cross-sectional view of the structure along the BB direction in FIG4 .

[0023] FIG6 is an enlarged structural diagram of portion C in FIG5 .

[0024] Explanation of the reference numerals: 1-nozzle body; 11-splash plate; 12-fastening stud; 13-water outlet; 2-alarm; 21-housing; 211-elastic deformation part; 212-groove; 213-mounting cavity; 214-long hole; 215-mounting stud; 22-alarm circuit; 23-magnetic induction switch; 24-main control MCU module; 25-communication module; 26-battery; 27-indicator light; 28-buzzer; 29-power switch; 3-plug; 31-embedded recess; 4-temperature sensitive glass bead; 5-trigger piece; 51-clamping part; 52-permanent magnet; 53-embedded column; 54-through hole; 55-sliding part; 6-rotation positioning mechanism; 61-positioning protrusion; 62-positioning recess. Modes for Carrying Out the Invention

[0025] As shown in Figures 1, 2, 4 and 5, a fire sprinkler with a magnetic induction triggered alarm function in this embodiment includes a sprinkler body 1 and an alarm 2. The sprinkler body 1 is provided with a plug 3 for sealing its water outlet 13, and a temperature-sensitive glass bead 4 is also installed on the sprinkler body 1 to support the plug 3; the alarm 2 includes a shell 21 and an alarm circuit 22 installed in the shell 21. The shell 21 is installed below the sprinkler body 1, and a splash plate 11 is installed on the sprinkler body 1. The splash plate 11 is located above the alarm 2, and the alarm circuit 22 is provided with an alarm switch; the alarm switch is a magnetic induction switch 23, which is specifically a reed switch; it also includes a trigger piece 5; one end of the trigger piece 5 is provided with a clamping portion 51, and the clamping portion 51 is clamped and fixed by the temperature-sensitive glass bead 4 and the plug 3; the other end of the trigger piece 5 is installed with a permanent magnet 52, which is arranged close to the magnetic induction switch 23, so that the magnetic induction switch 23 is closed and the alarm circuit 22 is in a non-triggered state. With such a design, during use, the alarm circuit 22 switches its state accordingly according to the signal of the magnetic induction switch 23; when there is no fire, under the action of the permanent magnet 52 of the trigger piece 5, the magnetic induction switch 23 is in a closed state, and the alarm circuit 22 is in a non-triggered state; when a fire occurs, the temperature-sensitive glass beads 4 will break at a certain temperature, and then the temperature-sensitive glass beads 4 will shatter under the action of water pressure, causing the plug 3 to fall and the water in the fire-fighting pipe to be ejected from the water outlet 13 of the nozzle body 1. After the temperature-sensitive glass beads 4 are broken, the trigger piece 5 also falls with the plug 3, causing the permanent magnet 52 to move away from the magnetic induction switch 23, so that the magnetic induction switch 23 is in an off state and the alarm circuit 22 is triggered and started in a triggered state, thereby realizing a fire alarm. Such a structure only requires the use of temperature-sensitive glass beads 4 and plugs 3 to clamp and fix the trigger piece 5. The assembly process is very simple, which greatly improves production efficiency. During application, after the temperature-sensitive glass beads 4 are broken, the trigger piece 5 falls under the action of its own gravity, which can cause the alarm circuit 22 to alarm. It has high reliability and can also be used in pipelines with low water pressure, and has a wide range of applications.

[0026] In order to make the trigger piece 5 installed more firmly, as shown in Figures 1, 4, 5 and 6, one end of the trigger piece 5 is bent to form the clamping portion 51, an embedding column 53 is formed on the clamping portion 51, and a through hole 54 is formed on the embedding column 53; an embedding recess 31 is formed on the plug 3; the embedding column 53 of the clamping portion 51 is embedded in the embedding recess 31 of the plug 3, and one end of the temperature-sensitive glass bead 4 is inserted into the through hole 54 of the embedding column 53.

[0027] To facilitate testing, as shown in Figures 1, 2, 4, and 5, one end of the trigger plate 5, on which the permanent magnet 52 is mounted, is bent to form a toggle portion 55. When a worker is testing whether the fire sprinkler with the magnetic induction trigger alarm function is functioning properly, they can toggle the toggle portion 55 to move the permanent magnet 52 away from the magnetic induction switch 23, thereby simulating an alarm.

[0028] To make the connection structure between the housing 21 and the nozzle body 1 more reasonable, as shown in Figures 1, 2, 3, 4, and 5, the housing 21 is threadedly connected to the nozzle body 1 via mounting studs 215. A rotation positioning mechanism 6 is also provided between the housing 21 and the nozzle body 1. When the housing 21 and the nozzle body 1 are threadedly connected, the rotation positioning mechanism 6 positions the housing 21 relative to the nozzle body 1. This design ensures that after the housing 21 is installed on the nozzle body 1, the two have a fixed installation angle, so that the magnetic induction switch 23 in the housing 21 faces a predetermined direction, so that the permanent magnet 52 at one end of the trigger plate 5 can approach the magnetic induction switch 23 in the housing 21 at a fixed angle.

[0029] In order to make the structure of the rotation positioning mechanism 6 more reasonable, as shown in Figures 2 and 3, the rotation positioning mechanism 6 includes a positioning protrusion 61 and a positioning recess 62; the positioning recess 62 is arranged on the nozzle body 1; an elastic deformation portion 211 is formed on the shell 21, and the positioning protrusion 61 is arranged on the elastic deformation portion 211 of the shell 21; when the shell 21 is threadedly connected to the nozzle body 1, the positioning protrusion 61 is snapped into the positioning recess 62.

[0030] For easy installation, as shown in FIG1 and FIG2 , a groove 212 is provided on the outer surface of the housing 21 . The position of the groove 212 corresponds to the position of the magnetic induction switch 23 , and the permanent magnet 52 is located in the groove 212 .

[0031] In order to make the connection structure between the shell 21 and the nozzle body 1 more reasonable, as shown in Figures 2, 3, 4 and 5, a screw hole is provided on the nozzle body 1; a raised mounting cavity 213 is formed on the outer surface of the shell 21, and an elongated hole 214 is formed on the shell 21 to connect the inner and outer walls of the mounting cavity 213. The elastic deformation portion 211 is formed by forming the elongated hole 214. The shell 21 is generally made of plastic. After the elongated hole 214 is formed on the shell 21, a thinner portion can be formed, and this thinner portion is the elastic deformation portion 211. A mounting stud 215 is installed in the mounting cavity 213, and the mounting stud 215 of the shell 21 is threadedly connected to the screw hole on the nozzle body 1; a tightening stud 12 is also installed in the screw hole of the nozzle body 1, and the tightening stud 12 is used to push the temperature-sensitive glass bead 4 to support the plug 3.

[0032] In order to make the structure of the alarm circuit 22 more reasonable, as shown in Figures 4 and 5, the alarm circuit 22 also includes a main control MCU module 24, a communication module 25, a battery 26, an indicator light 27, and a buzzer 28. The magnetic induction switch 23 is used to control the main control MCU module 24. The communication module 25, battery 26, indicator light 27, and buzzer 28 are all electrically connected to the main control MCU module 24. The housing 21 is provided with a hole for the buzzer 28 connecting the interior with the outside world and a light hole for revealing the indicator light 27. The main control MCU module 24 has an independent coding address, which can not only realize the issuance of local alarm information through sound and light, but also realize the long-distance transmission of alarm information, promptly notifying relevant personnel to handle it, so that relevant personnel can quickly locate the alarm location.

[0033] In order to prevent the battery 26 from being damaged during storage and transportation, as shown in FIG1 , FIG4 and FIG5 , a power switch 29 is installed on the housing 21 , and the power switch 29 is electrically connected between the battery 26 and the main control MCU module 24 .

Claims

1. A fire sprinkler with a magnetic induction-triggered alarm function, comprising a sprinkler body and an alarm; the sprinkler body is provided with a plug for sealing its water outlet, and a temperature-sensitive glass bead is also mounted on the sprinkler body to support the plug; the alarm comprises a housing and an alarm circuit mounted within the housing, the housing being mounted on the sprinkler body, and the alarm circuit is provided with an alarm switch; and characterized in that: The alarm switch is a magnetic induction switch; it also includes a trigger plate; one end of the trigger plate is provided with a clamping portion, which is clamped and fixed by a temperature-sensitive glass bead and a plug; the other end of the trigger plate is installed with a permanent magnet, which is arranged close to the magnetic induction switch, so that the magnetic induction switch is closed and the alarm circuit is in a non-triggered state.

2. The fire sprinkler with a magnetic induction triggered alarm function according to claim 1, characterized in that: One end of the trigger piece is bent to form the clamping portion, an embedding column is formed on the clamping portion, and a through hole is formed on the embedding column; an embedding recess is formed on the plug; the embedding column of the clamping portion is embedded in the embedding recess of the plug, and one end of the temperature-sensitive glass bead is inserted into the through hole of the embedding column.

3. The fire sprinkler with a magnetic induction triggered alarm function according to claim 1, characterized in that: One end of the trigger piece where the permanent magnet is installed is bent to form a toggle portion.

4. A fire sprinkler with a magnetic induction triggered alarm function according to claim 1, 2 or 3, characterized in that: The shell and the nozzle body are connected together by threads; a rotation positioning mechanism is also provided between the shell and the nozzle body; when the shell and the nozzle body are threadedly connected, the rotation positioning mechanism causes the shell and the nozzle body to be positioned relative to each other.

5. The fire sprinkler with magnetic induction triggered alarm function according to claim 4, characterized in that: The rotation positioning mechanism includes a positioning protrusion and a positioning recess; the positioning recess is arranged on the nozzle body; an elastic deformation part is formed on the shell, and the positioning protrusion is arranged on the elastic deformation part of the shell; when the shell and the nozzle body are threadedly connected, the positioning protrusion is snapped into the positioning recess.

6. The fire sprinkler with a magnetic induction triggered alarm function according to claim 4, characterized in that: The outer surface of the shell is provided with a groove, the position of the groove corresponds to the position of the magnetic induction switch, and the permanent magnet is located in the groove.

7. The fire sprinkler with a magnetic induction triggered alarm function according to claim 5, characterized in that: A screw hole is provided on the nozzle body; a raised mounting cavity is formed on the outer surface of the shell, and an elongated hole connecting the inner and outer walls of the mounting cavity is formed on the shell. The elastic deformation portion is formed by forming the elongated hole, and a mounting stud is installed in the mounting cavity. The mounting stud of the shell is threadedly connected to the screw hole on the nozzle body; a tightening stud is also installed in the screw hole of the nozzle body, and the tightening stud is used to push the temperature-sensitive glass beads to press against the plug.

8. The fire sprinkler with a magnetic induction triggered alarm function according to claim 1, characterized in that: The alarm circuit also includes a main control MCU module, a communication module, a battery, an indicator light and a buzzer. The magnetic induction switch is used to control the main control MCU module. The communication module, battery, indicator light and buzzer are all electrically connected to the main control MCU module.

9. The fire sprinkler with magnetic induction triggered alarm function according to claim 8, characterized in that: A power switch is installed on the housing and is electrically connected between the battery and the main control MCU module.

10. The fire sprinkler with magnetic induction triggered alarm function according to claim 1, characterized in that: The magnetic induction switch is a reed switch or a Hall switch.

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