Spray head for fire fighting

Abstract

The utility model belongs to the field of fire-fighting sprayers, and particularly relates to a fire-fighting spray header which comprises a shell for protecting a water pipe and a piston device, the water pipe is arranged in the shell, the water inlet end of the water pipe protrudes out of one side of the shell, a valve is arranged on the water pipe, a torsional spring is arranged at the joint of the valve and the water pipe, and the piston device is arranged on the shell. A guide rail is arranged on the valve, the piston device comprises a piston head and a piston rod, the space between the piston head and a piston cylinder is filled with gas which expands after being heated, the piston cylinder protrudes out of one side of the shell, a sliding block is hinged to the end of the piston rod, and the sliding block is in sliding fit with the guide rail; automatic spraying is completed through the piston device, specifically, gas which expands after being heated exists between the piston head and the piston cylinder, after the temperature rises to a certain range, the gas expands to push the piston head and open the valve, after the temperature is reduced, the gas is reset through the torsion spring arranged on the valve, repeated use is achieved, and cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of fire sprinkler heads, in particular to a sprinkler head for fire extinguishing. Background Art

[0002] In daily life, fire is one of the most frequent and common disasters that threaten public safety and social development. Therefore, fire-fighting facilities are indispensable in daily life.

[0003] One of the most common fire-fighting equipment is the fire sprinkler: a sprinkler that automatically starts up within a predetermined temperature range under the action of heat, or is started up by a control device according to a fire signal, and sprays water to extinguish the fire in a designed water spraying shape and flow rate. The existing common glass ball sprinkler is a sprinkler that opens when the liquid filled in the glass ball expands due to heat, causing the glass ball to explode. Although it has a fire-fighting effect, it has the following problems: (1) After the glass ball explodes, the sprinkler needs to be replaced, which is costly; (2) When the glass ball sprinkler is installed and locked, the glass ball may be damaged, which may cause mis-spraying in the future (due to automatic rupture caused by damage to the glass ball during installation and locking); (3) When a fire occurs, the fire alarm in the background will sound, but it is difficult to determine the specific location of the fire, resulting in people being unable to put out the fire in time, causing serious losses. Utility Model Content

[0004] The purpose of the utility model is to provide a fire extinguishing sprinkler head to solve the problems raised in the above background technology.

[0005] The purpose of this utility model is to adopt the following technical solutions to achieve:

[0006] A fire sprinkler head for fire extinguishing proposed in the utility model comprises a shell and a piston device for protecting a water pipe, wherein the water pipe is arranged inside the shell, and a water inlet end of the water pipe protrudes from one side of the shell;

[0007] The water pipe is provided with a valve, a torsion spring is provided at the connection between the valve and the water pipe, a guide rail is provided on the valve, the piston device comprises a piston head and a piston rod, the space between the piston head and the piston cylinder is filled with gas that expands due to heat, the piston cylinder protrudes from one side of the housing, a slider is hinged at the end of the piston rod, and the slider is slidably matched with the guide rail;

[0008] A single-chip microcomputer, a battery for power supply and a sensing device for detecting the valve state are arranged inside the shell. The sensing device and the battery are electrically connected to the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the fire warning system.

[0009] By means of the above technical solution, the utility model has the following advantages:

[0010] (1) The utility model uses a piston device to achieve automatic spraying. Specifically, there is gas that expands when heated between the piston head and the piston cylinder. When the temperature rises to a certain range, the gas expands and pushes the piston head to open the valve. When the temperature drops, the valve is reset by a torsion spring provided on the valve, thereby achieving repeated use and reducing costs.

[0011] (2). The utility model is provided with a sensing device, a single chip microcomputer and a battery for power supply. Under normal conditions, the signal of the sensing device is blocked by the valve; after the valve is opened, the sensing device is connected to send a signal to the single chip microcomputer, and the single chip microcomputer sends a signal to the fire warning system, which can obtain the specific location of the fire, provide timely support for fire fighting, improve safety and reduce losses.

[0012] Furthermore, the sensing device includes an infrared transmitter and an infrared receiver which are relatively distributed, and at normal temperature, the valve is located between the infrared transmitter and the infrared receiver.

[0013] Advantages: Infrared sensing has the characteristics of high sensitivity, non-contact measurement, and easy integration.

[0014] Furthermore, the infrared ray emitted by the infrared emitter irradiates the edge of the valve.

[0015] Advantages: When infrared rays are irradiated on the edge of the valve, as long as the position of the valve changes slightly, the sensing device will immediately send a signal to the microcontroller, and then to the fire warning system, giving a timely warning to prevent the spread of fire.

[0016] Furthermore, a buzzer is provided on one side of the housing, and the buzzer is electrically connected to the single chip microcomputer.

[0017] Advantages: By setting a buzzer, the specific location of the fire is easier to find.

[0018] Furthermore, a top cover is hinged on the outer shell.

[0019] Advantages: The hinged top cover allows easy access to the interior of the housing.

[0020] Furthermore, the water inlet end of the water pipe is provided with threads.

[0021] Advantages: The threaded connection makes it easy to install and disassemble the fire branch pipes.

[0022] Furthermore, the guide rail is a groove, the cross section of the groove is an inverted T shape, and the cross section of the slider is an inverted T shape.

[0023] Advantages: The groove and the slider are T-shaped, which are not easy to fall off after being matched, and increase stability.

[0024] Furthermore, one side of the shell facing the water outlet end of the water pipe is in an open state.

[0025] Advantages: The outer shell is set to be open on one side of the water outlet, which can increase the spraying area of ​​the sprinkler head.

[0026] Furthermore, the gas between the piston cylinder and the piston head is air.

[0027] Advantages: Air is a common gas in life and can effectively reduce costs.

[0028] Furthermore, the piston cylinder is made of a metal material with strong thermal conductivity.

[0029] Advantages: The better the thermal conductivity of the piston cylinder, the faster the gas will expand, thereby speeding up the spraying speed and being able to extinguish the fire in time.

[0030] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The utility model is a three-dimensional schematic diagram of a sprinkler head for fire extinguishing.

[0032] Figure 2 The utility model is a cross-sectional structural schematic diagram of a sprinkler head for fire extinguishing in a normal temperature state.

[0033] Figure 3 The utility model is a top view of a sprinkler head for fire extinguishing without a top cover at normal temperature.

[0034] Figure 4 The utility model is a schematic diagram of a piston device in a sprinkler head for fire extinguishing.

[0035] Figure 5 The utility model is a top view of a sprinkler head for fire extinguishing without a top cover in a working state.

[0036] Figure 6 The utility model is a schematic diagram of the cooperation between a sensing device and a valve in a sprinkler head for fire extinguishing.

[0037] [Reference Signs]

[0038] 1. Shell; 2. Top cover; 3. Water pipe; 4. Valve; 401. Groove; 5. Piston device; 501. Piston cylinder; 502. Piston head; 503. Piston rod; 504. Slider; 6. Single chip microcomputer; 7. Sensing device; 8. Buzzer. DETAILED DESCRIPTION

[0039] The features and exemplary embodiments of various aspects of the utility model will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without the need for some of these specific details. The following description of the embodiment is only to provide a better understanding of the utility model by showing an example of the utility model. In the accompanying drawings and the following description, at least part of the known and prior art is not shown to avoid unnecessary ambiguity to the utility model; and, for clarity, the size and shape of the part may be exaggerated. The features or characteristics described below can be combined in one or more embodiments in any suitable manner. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or quantity.

[0040] The utility model provides Figure 1 A fire-fighting sprinkler head shown in the figure includes an outer shell 1 for protecting a water pipe 3. The water pipe 3 is located inside the outer shell 1. The water inlet end of the water pipe 3 protrudes from one side of the outer shell 1. The water inlet end is connected to a fire-fighting branch pipe. Furthermore, the water inlet end is provided with a thread to facilitate the installation and disassembly of the fire-fighting branch pipe. The side of the outer shell 1 facing the water outlet end of the water pipe 3 is in an open state, which can increase the spraying area of ​​the water outlet end.

[0041] See also Figure 2-Figure 6 A valve 4 is provided on the water pipe 3, a torsion spring is provided at the connection between the valve 4 and the water pipe 3, and a guide rail is provided on the valve 4. The above-mentioned fire-fighting sprinkler head also includes a piston device 5, including a piston head 502 and a piston rod 503. The space between the piston head 502 and the piston cylinder 501 is filled with a gas that expands due to heat (for example, air. Air is a common gas in life and can effectively reduce costs). The piston cylinder 501 protrudes from one side of the outer shell 1 (of course, the longer the part of the piston rod 503 protruding from the outer shell 1, the better the effect of pushing the valve 4 after the gas expands due to heat). Further, the piston cylinder 501 is made of a metal material with strong thermal conductivity (for example, copper). A slider 504 is hinged at the end of the piston rod 503, and the slider 504 slides with the guide rail. Further, the guide rail is a groove 401, and the cross-sections of the groove 401 and the slider 504 are both inverted T-shaped. The inverted T-shaped design is adopted, and it is not easy to fall off after sliding.

[0042] A single chip microcomputer 6, a battery for power supply and a sensing device 7 for detecting the state of the valve 4 are arranged inside the housing 1. Further, the sensing device 7 includes a relatively distributed infrared transmitter and an infrared receiver (infrared sensing has the characteristics of high sensitivity, contactless measurement, and easy integration), which are respectively located above and below the valve 4. Under normal conditions, the valve 4 is located between the infrared transmitter and the infrared receiver. The infrared rays emitted by the infrared transmitter irradiate the edge of the valve 4. As long as the position of the valve 4 changes slightly, the sensing device 7 will immediately operate and give an alarm in time to prevent the spread of the fire; the sensing device 7 and the battery are electrically connected to the single chip microcomputer 6, and the single chip microcomputer 6 is electrically connected to the fire warning system. A top cover 2 is hinged on the top of the housing 1 to facilitate the inspection and maintenance of the internal components of the housing 1. In the best case, the single chip microcomputer 6 is arranged on the lower side of the top cover 2. Further, a buzzer 8 is also arranged on one side of the housing 1, and the buzzer 8 is electrically connected to the single chip microcomputer 6. When a fire occurs, the buzzer 8 emits a sound warning, so that patrol personnel can reach the specific location of the fire as soon as possible.

[0043] The specific operation of a fire sprinkler head is as follows:

[0044] At room temperature: the volume of gas in the piston cylinder 501 does not change, the piston rod 503 is stationary, and the valve 4 is closed;

[0045] Under high temperature condition: the gas in the piston cylinder 501 expands due to heat and pushes the piston head 502, driving the piston rod 503 to slide the valve 4 outward. After the valve 4 rotates, the infrared receiver receives the infrared rays and transmits the signal to the single chip computer 6. The single chip computer 6 synchronizes the signal with the fire warning system and the buzzer 8. Then, the water outlet of the water pipe 3 sprays water, the buzzer 8 alarms, and the fire warning system also receives the signal. While the water pipe 3 sprays water to prevent the fire from spreading, people can know the specific location of the fire.

[0046] After returning to normal temperature: the volume of gas in the piston cylinder 501 is restored, the valve 4 is reset under the action of the torsion spring, and the piston rod 503 is also reset accordingly.

[0047] In other embodiments of the present invention, a side of the housing 1 facing the water outlet end of the water pipe 3 may be in a closed state, and the water outlet end protrudes from the housing 1 .

[0048] In other embodiments of the present invention, the guide rail may be a bar-shaped hole, and the slider 504 slidably cooperates with the bar-shaped hole.

[0049] The above is only a preferred embodiment of the present invention. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, makes any simple modifications, equivalent changes and modifications to the above embodiments based on the technical essence of the present invention, which still fall within the scope of the technical solution of the present invention.

Claims

1. A fire extinguishing sprinkler head, characterized in that: It comprises a shell (1) for protecting a water pipe and a piston device (5), wherein the water pipe (3) is arranged inside the shell (1), and the water inlet end of the water pipe (3) protrudes from one side of the shell (1); The water pipe (3) is provided with a valve (4), a torsion spring is provided at the connection between the valve (4) and the water pipe (3), a guide rail is provided on the valve (4), the piston device (5) comprises a piston head (502) and a piston rod (503), a gas that expands due to heat is filled between the piston head (502) and the piston cylinder (501), the piston cylinder (501) protrudes from one side of the housing (1), a slider (504) is hinged at the end of the piston rod (503), and the slider (504) is slidably matched with the guide rail; A single-chip microcomputer (6), a battery for power supply, and a sensing device (7) for detecting the state of a valve (4) are arranged inside the housing (1); the sensing device (7) and the battery are electrically connected to the single-chip microcomputer (6); and the single-chip microcomputer (6) is electrically connected to a general fire warning system.

2. A fire extinguishing sprinkler head according to claim 1, characterized in that: The sensing device (7) comprises an infrared transmitter and an infrared receiver which are relatively distributed. At normal temperature, the valve (4) is located between the infrared transmitter and the infrared receiver.

3. A fire extinguishing sprinkler head according to claim 2, characterized in that: The infrared ray emitted by the infrared emitter irradiates the edge of the valve (4).

4. A fire extinguishing sprinkler head according to claim 1, characterized in that: A top cover (2) is hingedly connected above the outer shell (1).

5. A fire extinguishing sprinkler head according to claim 1, characterized in that: A buzzer (8) is provided on one side of the housing (1), and the buzzer (8) is electrically connected to the single-chip computer (6).

6. A fire extinguishing sprinkler head according to claim 1, characterized in that: The water inlet end of the water pipe (3) is provided with threads.

7. A fire extinguishing sprinkler head according to claim 1, characterized in that: The guide rail is a groove (401), the cross section of the groove (401) is an inverted T-shape, and the cross section of the slider (504) is an inverted T-shape.

8. A fire extinguishing sprinkler head according to claim 1, characterized in that: The side of the housing (1) facing the water outlet end of the water pipe (3) is in an open state.

9. A fire extinguishing sprinkler head according to claim 1, characterized in that: The gas between the piston cylinder (501) and the piston head (502) is air.

10. A fire extinguishing sprinkler head according to claim 1, characterized in that: The piston cylinder (501) is made of a metal material with strong thermal conductivity.

Images