Intelligent fire-fighting sprinkler head
By introducing a PLC controller and sensors combined with solenoid valves into fire sprinkler heads, the problem of traditional fire sprinkler heads not being able to be blocked in time has been solved, achieving intelligent control and efficient fire extinguishing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGGUANG FIRE TECH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional fire sprinkler heads rely on temperature-sensitive glass bulbs. If they are not sealed in time after being turned on, they will continue to spray water, causing a fire to turn into a flood, making it difficult to achieve intelligent control.
The system employs a PLC controller, temperature sensor, and smoke sensor combined with a solenoid valve to achieve intelligent control, automatically turning the water flow on and off, and increasing the spraying area through a rotating diffusion assembly.
It achieves intelligent automatic fire extinguishing and shut-off functions, avoiding unnecessary waste of water resources and improving fire extinguishing efficiency and coverage area.
Smart Images

Figure CN224220652U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire sprinkler head technology, and in particular to an intelligent fire sprinkler head. Background Technology
[0002] Among fire extinguishing equipment, fire sprinkler heads are the main components, directly facing the fire scene. When a fire occurs, water is sprayed out through the sprinkler head's splash plate to extinguish the fire. They are divided into pendant sprinkler heads, upright sprinkler heads, ordinary sprinkler heads, and sidewall sprinkler heads, etc.
[0003] A fire sprinkler head disclosed in announcement number CN210409323U, although the utility model relates to the field of fire protection equipment technology, connects the sprinkler head base to the water pipe during use. When no fire occurs, the bottom end of the glass body abuts against the seal. When a fire occurs, the glass body expands and breaks, causing the seal to lose its support. The water flows from the pipe through the sprinkler head base and sprays out from the opening to achieve the purpose of extinguishing the fire. Since the seal is hinged to the opening, the seal will not be washed away by the water flow and will not be lost. Moreover, the seal will be driven by the water flow to stand upright, without affecting the water flow rate or the progress of fire extinguishing.
[0004] However, this fire sprinkler head has the following disadvantages: the core working principle of the fire sprinkler head still uses the traditional temperature-sensing glass bulb. If the sprinkler head is not sealed in time after it is turned on, it will continue to spray water, and may even turn a fire into a flood. It is not convenient to realize intelligent operation. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] The purpose of this utility model is to provide an intelligent fire sprinkler head, which solves the problem mentioned in the background art that the core working principle of fire sprinklers still uses the traditional temperature-sensing glass bulb. Such sprinklers will continue to spray water if they are not sealed in time after being turned on, and may even turn a fire into a flood, making it difficult to achieve intelligent operation.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: an intelligent fire sprinkler head includes a solenoid valve, a mounting component fixedly connected to one side of the solenoid valve surface, a PLC controller fixedly connected to the top surface of the mounting component, a monitoring component fixedly connected to the bottom edge of the mounting component, a connecting pipe fixedly connected to the bottom end of the solenoid valve, a spraying mechanism fixedly connected to the connecting pipe, and a rotating diffusion component fixedly connected to the bottom of the spraying mechanism.
[0009] The monitoring component includes a mounting bracket fixedly connected to the bottom edge of the mounting component, a temperature sensor fixedly mounted on the surface of the mounting bracket, and a smoke sensor fixedly connected to one side of the bottom surface of the mounting bracket.
[0010] The rotary diffusion assembly includes a mounting rod fixedly connected to the bottom of the spraying mechanism, an inclined impeller is movably sleeved on the surface of the mounting rod, and a splash plate is threadedly connected to the bottom end of the mounting rod.
[0011] As a further embodiment of this utility model, the spraying mechanism includes a spraying pipe seat, and a first section of pipe is fixedly connected to the bottom end of the spraying pipe seat, which facilitates connection with a solenoid valve.
[0012] As a further embodiment of this utility model, a diversion pipe is fixedly connected to the bottom end of the first section of the pipe, and a dispersion cover is fixedly connected to the bottom surface of the diversion pipe, which facilitates the diversion of flow.
[0013] As a further embodiment of this utility model, the bottom surface of the diversion pipe is provided with a plurality of dispersing ports, and the bottom surface of the dispersing cover is provided with a plurality of through ports. The positions of the dispersing ports and the through ports are adapted to each other, and the dispersing ports facilitate the passage of water.
[0014] As a further embodiment of this utility model, a sealing groove is provided on the top surface of the spray pipe seat, and a sealing gasket is snapped into the inside of the sealing groove, which facilitates sealing.
[0015] As a further embodiment of this utility model, one side of the PLC controller is electrically connected to the solenoid valve, the temperature sensor, and the smoke sensor via power lines, and the other side of the PLC controller is connected to an external power source via power lines, which facilitates the PLC controller in issuing commands and receiving monitoring signals.
[0016] As a further embodiment of this utility model, a connector is fixedly connected to the top of the solenoid valve. The connector is used to connect to the water pipe of the external fire protection system, and the connector facilitates connection with the water pipe of the external fire protection system.
[0017] (III) Beneficial Effects
[0018] This utility model provides an intelligent fire sprinkler head, which has the following beneficial effects:
[0019] 1. This intelligent fire sprinkler head, through the configuration of a PLC controller, monitoring components, and solenoid valves, connects to the water pipes of the external fire water supply system during use. Temperature and smoke sensors monitor the smoke concentration and temperature in the environment in real time. When a fire occurs, the temperature and smoke sensors detect abnormal signals and send a signal to the PLC controller. The PLC controller then controls the solenoid valve to open, allowing water to flow through the fire sprinkler head for fire extinguishing. When the temperature and smoke sensors detect that the current temperature has dropped below the set value, or the smoke concentration has returned to normal levels, they send a signal to the PLC controller, determining that the fire has been extinguished. The PLC controller then controls the solenoid valve to close, thus achieving automatic fire extinguishing and automatic shut-off. This avoids the problem of traditional fire sprinklers using traditional temperature-sensing glass bulbs, which, if not promptly sealed, will continue to spray water, potentially turning a fire into a flood. This system facilitates intelligent operation and conserves water resources.
[0020] 2. This intelligent fire sprinkler head, through the setting of the rotating diffusion component, allows water to flow through the diversion pipe and dispersion hood during use, and then be divided through the dispersion port and through port. Under high pressure, the water impacts the inclined impeller, changing the direction of the inclined impeller and causing it to rotate, increasing the spray area. The remaining falling water is sprayed out through the gaps in the splash plate, thereby achieving the purpose of uniform spraying, which helps to increase the water flow coverage area and speed up the fire fighting progress. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;
[0023] Figure 3 This is a bottom view of the spraying mechanism of this utility model;
[0024] Figure 4 This is a schematic diagram of the monitoring component structure of this utility model.
[0025] In the diagram: 1. Solenoid valve; 2. Mounting component; 3. PLC controller; 4. Monitoring component; 401. Mounting bracket; 402. Temperature sensor; 403. Smoke sensor; 5. Connecting pipe; 6. Connecting component; 7. Rotary diffusion assembly; 701. Mounting rod; 702. Inclined impeller; 703. Splash plate; 8. Spray pipe seat; 9. First section pipe; 10. Diverter pipe; 11. Dispersion hood; 12. Dispersion port; 13. Sealing gasket. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0027] Please see Figures 1 to 4 This utility model provides a technical solution: an intelligent fire sprinkler head, including a solenoid valve 1, a mounting component 2 fixedly connected to one side of the surface of the solenoid valve 1, a PLC controller 3 fixedly connected to the top surface of the mounting component 2, a monitoring component 4 fixedly connected to the bottom edge of the mounting component 2, a connecting pipe 5 fixedly connected to the bottom end of the solenoid valve 1, a spraying mechanism fixedly connected to the connecting pipe 5, and a rotating diffusion component 7 fixedly connected to the bottom of the spraying mechanism.
[0028] Monitoring component 4 includes a mounting bracket 401 fixedly connected to the bottom edge of mounting component 2. A temperature sensor 402 is fixedly mounted on the surface of mounting bracket 401, and a smoke sensor 403 is fixedly connected to one side of the bottom surface of mounting bracket 401. Through the configuration of PLC controller 3, monitoring component 4, and solenoid valve 1, in use, the intelligent fire sprinkler head is connected to the water pipe of the external fire water supply system. The temperature sensor 402 and smoke sensor 403 sense the smoke concentration and temperature level in the current environment for real-time monitoring. When a fire occurs, the temperature sensor 402 and smoke sensor 403 detect abnormal signals and send a signal to P... The LC controller 3 and PLC controller 3 control the solenoid valve 1 to open, and water flows out through the fire sprinkler head to extinguish the fire. When the temperature sensor 402 and smoke sensor 403 detect that the current temperature drops below the set value, or the smoke concentration returns to the normal level, they send a signal to the PLC controller 3, which determines that the fire has been extinguished. The PLC controller 3 then controls the solenoid valve 1 to close, thereby achieving the purpose of automatic fire extinguishing and automatic shut-off. This avoids the problem of traditional fire sprinklers still using traditional temperature-sensing glass bulbs. If the sprinkler head is not sealed in time after opening, it will continue to spray water, and may even turn a fire into a flood. This helps to achieve intelligent operation and save water resources.
[0029] The rotary diffusion assembly 7 includes a mounting rod 701 fixedly connected to the bottom of the spraying mechanism. An inclined impeller 702 is movably sleeved on the surface of the mounting rod 701, and a splash plate 703 is threadedly connected to the bottom end of the mounting rod 701. With the arrangement of the rotary diffusion assembly 7, during use, the water flow passes through the diversion pipe 10 and the dispersion hood 11, and is diverted through the dispersion port 12 and the through port. Under high pressure, the water impacts the inclined impeller 702, changing the direction of the inclined impeller 702 and causing it to rotate, increasing the spraying area. The remaining falling water is sprayed out through the gaps in the splash plate 703, thereby achieving the purpose of uniform spraying, which helps to increase the water flow coverage area and speed up the fire fighting progress.
[0030] The spraying mechanism includes a spray pipe seat 8, and a first section of pipe 9 is fixedly connected to the bottom end of the spray pipe seat 8. The spray pipe seat 8 serves to connect with the solenoid valve 1.
[0031] The bottom end of the first section pipe 9 is fixedly connected to a diversion pipe 10, and the bottom surface of the diversion pipe 10 is fixedly connected to a dispersion cover 11. The diversion pipe 10 serves to divert water at this point.
[0032] The bottom surface of the diversion pipe 10 is provided with several dispersing ports 12, and the bottom surface of the dispersing cover 11 is provided with several through ports. The positions of the dispersing ports 12 and the through ports are matched. The arrangement of the dispersing ports 12 and the through ports allows water to pass through.
[0033] A sealing groove is provided on the top surface of the spray pipe seat 8, and a sealing gasket 13 is snapped into the inside of the sealing groove. The sealing gasket 13 enhances the sealing effect.
[0034] One side of the PLC controller 3 is electrically connected to the solenoid valve 1, the temperature sensor 402, and the smoke sensor 403 via power lines. The other side of the PLC controller 3 is connected to an external power source via a power line. Through the settings of the PLC controller 3, it plays a role in intelligent control.
[0035] A connector 6 is fixedly connected to the top of the solenoid valve 1. The connector 6 is used to connect to the water pipe of the external fire protection system. The connector 6 serves to connect to the water pipe of the external fire protection system.
[0036] In this invention, the working steps of the device are as follows:
[0037] First step: When in use, connect the intelligent fire sprinkler head to the water pipe of the external fire water supply system. Temperature sensor 402 and smoke sensor 403 monitor the smoke concentration and temperature in the current environment in real time. When a fire occurs, temperature sensor 402 and smoke sensor 403 detect abnormal signals and send a signal to PLC controller 3. PLC controller 3 controls solenoid valve 1 to open, and water flows out through the fire sprinkler head to extinguish the fire. When temperature sensor 402 and smoke sensor 403 detect that the current temperature drops below the set value, or the smoke concentration returns to the normal level, they send a signal to PLC controller 3, determining that the fire has been extinguished. PLC controller 3 then controls solenoid valve 1 to close.
[0038] The second step: When in use, the water flows through the diversion pipe 10 and the dispersion cover 11, and is diverted through the dispersion port 12 and the through port. Under high pressure, the water impacts the inclined impeller 702, changing the direction of the inclined impeller 702 and causing it to rotate, increasing the spraying area. The remaining water that falls is sprayed out through the gaps in the splash plate 703.
[0039] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.
[0040] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An intelligent fire sprinkler head, comprising a solenoid valve (1), characterized in that: A mounting component (2) is fixedly connected to one side of the surface of the solenoid valve (1). A PLC controller (3) is fixedly connected to the top surface of the mounting component (2). A monitoring component (4) is fixedly connected to the bottom edge of the mounting component (2). A connecting pipe (5) is fixedly connected to the bottom end of the solenoid valve (1). A spraying mechanism is fixedly connected to the connecting pipe (5). A rotating diffusion component (7) is fixedly connected to the bottom of the spraying mechanism. The monitoring component (4) includes a mounting bracket (401) fixedly connected to the bottom edge of the mounting component (2), a temperature sensor (402) fixedly mounted on the surface of the mounting bracket (401), and a smoke sensor (403) fixedly connected to one side of the bottom surface of the mounting bracket (401). The rotary diffusion assembly (7) includes a mounting rod (701) fixedly connected to the bottom of the spraying mechanism. An inclined impeller (702) is movably sleeved on the surface of the mounting rod (701), and a splash plate (703) is threadedly connected to the bottom end of the mounting rod (701).
2. The intelligent fire sprinkler head according to claim 1, characterized in that: The spraying mechanism includes a spray pipe seat (8), and a first section of pipe (9) is fixedly connected to the bottom end of the spray pipe seat (8).
3. The intelligent fire sprinkler head according to claim 2, characterized in that: A diversion pipe (10) is fixedly connected to the bottom end of the first section pipe (9), and a dispersion cover (11) is fixedly connected to the bottom surface of the diversion pipe (10).
4. The intelligent fire sprinkler head according to claim 3, characterized in that: The bottom surface of the diversion pipe (10) is provided with a plurality of dispersing ports (12), and the bottom surface of the dispersing cover (11) is provided with a plurality of through ports. The positions of the dispersing ports (12) and the through ports are adapted to each other.
5. The intelligent fire sprinkler head according to claim 2, characterized in that: The top surface of the spray pipe seat (8) is provided with a sealing groove, and a sealing gasket (13) is snapped into the inside of the sealing groove.
6. The intelligent fire sprinkler head according to claim 1, characterized in that: One side of the PLC controller (3) is electrically connected to the solenoid valve (1), the temperature sensor (402), and the smoke sensor (403) via power lines. The other side of the PLC controller (3) is connected to an external power source via power lines.
7. The intelligent fire sprinkler head according to claim 1, characterized in that: The top of the solenoid valve (1) is fixedly connected to a connector (6), which is used to connect to the water pipe of the external fire protection system.