Automatic fire extinguishing device

Abstract

An automatic fire extinguishing device belongs to the technical field of fire extinguishing equipment and comprises a manual foam fire extinguisher body, a motor reducing mechanism, an electric push rod, a shell, a detection mechanism and a receiving mechanism, the motor reducing mechanism is installed on the shell, the supporting plate is installed on the rotating shaft, and the foam extinguisher body is installed at the upper end of the supporting plate. Handles at the upper and lower ends of the foam extinguisher body and the upper and lower ends of the electric push rod are hinged together respectively; each detection mechanism comprises a thermistor, an infrared emission module, a trigger circuit and a shell, and the shells of the multiple detection mechanisms are installed in the electrical control cabinet. The receiving mechanism comprises an infrared receiving module and an output circuit; the infrared receiving module is mounted in front of the upper end of the foam extinguisher body; the trigger circuit and the output circuit are installed in the shell and electrically connected. When a fire occurs at a corresponding point position, the foam extinguishing agent body can be automatically controlled to rotate, relatively accurate automatic fire extinguishing is performed on a point position with abnormal temperature, and the fault expansion probability is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field, especially an automatic fire extinguishing device. BACKGROUND

[0002] The hand-held foam fire extinguisher is a common fire fighting equipment, mainly used for extinguishing solid and flammable liquid fire, and its working principle is to adhere to the combustible material by spraying a large amount of carbon dioxide and foam, so that the combustible material is isolated from air, thereby achieving the purpose of extinguishing fire. When the hand-held foam fire extinguisher is used, the user stably holds the fire extinguisher near the fire point, and then presses the fire extinguishing handle with the hand, so that the fire extinguisher sprays fire extinguishing agent to extinguish the fire point.

[0003] The electrical control cabinet and the like internally install electrical equipment including circuit breaker, contactor, relay, capacitor, transformer and the like, when the temperature rises or burns due to the failure of the related electrical equipment due to various reasons, even if the power distribution cabinet in which the electrical equipment is installed internally installs a temperature or fire alarm, after the specific alarm information is received by the staff, the failure is enlarged due to the fact that the fire cannot be extinguished in the first time. In view of the above factors, it is very necessary to provide an automatic fire extinguishing device which can accurately position and extinguish fire when the fire occurs in the related equipment. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects that the power distribution cabinet and the like installed with more electrical equipment cannot automatically extinguish fire, and the accident is enlarged when the fire occurs, the utility model provides a hand-held foam fire extinguisher body, under the joint action of the related mechanism, the related equipment can be monitored at multiple points, the fire extinguishing agent can be automatically sprayed to extinguish the fire at the first time when the fire occurs at the corresponding point, thereby reducing the enlargement of the failure

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] An automatic fire extinguishing device, comprising a manual foam fire extinguisher body, a motor speed reduction mechanism, an electric push rod, a shell, and further comprising a detection mechanism and a receiving mechanism; the shell has an opening at the upper end, the motor speed reduction mechanism is installed in the shell, and the upper end of the rotating shaft of the motor speed reduction mechanism is located outside the upper end of the shell; a support plate is installed at the upper end of the rotating shaft; a plurality of universal ball head bearings are installed at the lower end of the support plate; the foam fire extinguisher body is installed at the upper end of the support plate; the upper and lower handles of the foam fire extinguisher body and the upper and lower ends of the electric push rod are respectively hinged together; the detection mechanism has multiple sets, each set of detection mechanism comprises a thermistor, an infrared emission module, a trigger circuit, and a shell; the shell has an opening at the rear end; the thermistor is installed at the rear side of the shell, and the heated surface of the thermistor and the rear end of the shell are in a vertical plane; the infrared emission module is installed at the front end of the shell, and the emission surface of the infrared emission module is located at the front side of the shell; the rear end of the shell of the multiple sets of detection mechanism is respectively installed at the inner side of the electrical control cabinet; the receiving mechanism comprises an infrared receiving module and an output circuit; the rear end of the shell of the infrared receiving module is installed at the front of the upper end of the foam fire extinguisher body; the trigger circuit and the output circuit of the multiple sets of detection mechanism are installed in the shell; the signal output end of the thermistor of each set of detection mechanism and the signal input end of the trigger circuit are electrically connected; the output end of the trigger circuit and the power input end of the infrared emission module are electrically connected; the power output end of the multiple sets of detection mechanism and the power input end of the motor speed reduction mechanism and the receiving mechanism are electrically connected; the signal output end of the infrared receiving module and the signal input end of the output circuit are electrically connected; the power output end of the output circuit and the power input end of the electric push rod are electrically connected.

[0007] Further, the infrared emission module and the infrared receiving module are in a horizontal plane.

[0008] Further, the receiving head of the infrared receiving module and the nozzle of the foam fire extinguisher body are in a vertical plane.

[0009] Further, the lower end of the ball of the plurality of universal ball head bearings and the outer side of the upper end of the shell are in rolling contact.

[0010] Further, the heated surface of the thermistor of the multiple sets of detection mechanism and the inner side of the electrical control cabinet are in contact.

[0011] Further, the trigger circuit of each set of detection mechanism comprises a resistance, a triode, a relay, and a diode which are electrically connected; the positive power input end of the relay and the positive power input end are connected; one end of the first resistance and one end of the second resistance are connected; the other end of the second resistance and the base of the triode are connected; the collector of the triode and the negative power input end of the relay are connected; the other end of the first resistance and the emitter of the triode are connected; the positive of the diode and the normally open contact end of the relay are connected.

[0012] Further, the output circuit comprises a relay and a time control switch connected in series, the negative power input end of the relay, the control power input end of the relay and the negative power input end of the time control switch are connected, and the positive power input end of the relay and the positive power input end of the time control switch are connected.

[0013] Further, the diode negative end of the trigger circuit of the multiple sets of detection mechanisms and the positive power input end of the motor deceleration mechanism are connected, and the normally closed contact end of the relay of the output circuit and the negative power input end of the motor deceleration mechanism are connected.

[0014] Compared with the prior art, the utility model has the beneficial effects that: under the joint action of the related mechanisms, the multiple sets of detection mechanisms can monitor the temperature of multiple points in the related equipment, the motor deceleration mechanism, the infrared receiving module and the foam fire extinguishing agent body can be automatically controlled to rotate at the first time when the corresponding point catches fire, the motor deceleration mechanism can be stopped at the first time when the infrared receiving module rotates to the temperature abnormal point (that is, the position closest to the fire in the power distribution cabinet), and the foam fire extinguishing agent body can automatically and accurately extinguish the fire at the temperature abnormal point, so that the expansion probability of the power distribution cabinet and the like is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in combination with the drawings and examples.

[0016] Figure 1 It is the whole structure and local amplification structure schematic diagram of the utility model.

[0017] Figure 2 It is the circuit diagram of the utility model. CONCRETE EMBODIMENT

[0018] Figure 1 、 2As shown in the figure, an automatic fire extinguishing device comprises a manual foam fire extinguisher body 1, a power module W1, a motor speed reduction mechanism M, an electric push rod M1, a power switch S1, a shell 2, and also has a detection mechanism and a receiving mechanism; the shell 1 has an opening 21 in the middle of the upper end, the motor speed reduction mechanism M is vertically distributed at the lower end of the shell, is fixedly installed in the lower end of the shell 1 through bolts, and the upper end of the rotating shaft of the motor speed reduction mechanism M is located outside the upper end of the shell 1 (the outer diameter of the rotating shaft is smaller than the inner diameter of the opening 21), and the upper end of the rotating shaft is horizontally welded with an annular support plate 3, a plurality of universal ball bearing 7 are fixedly installed on the lower end of the support plate 3 in a ring shape, and the lower end of the shell of the foam fire extinguisher body 1 is fixedly installed on the upper end of the support plate 3 through bolts; the upper and lower handles 101 of the foam fire extinguisher body 1 and the upper end of the movable column of the electric push rod M1 and the lower end of the cylinder are respectively hingedly installed together; the detection mechanism has multiple sets, each set of detection mechanism comprises a thermistor RT, an infrared emission module W2, a trigger circuit 41 and a shell 42, the shell 42 has an opening at the rear end, the thermistor RT is fixedly installed in the opening, and the heated surface of the thermistor RT and the rear end of the shell 42 are in a vertical plane, the infrared emission module W2 is installed at the front end of the shell 42 and the emission surface of the infrared emission module W2 is located at the front outer side of the shell 42, the rear ends of the shells 42 of multiple sets of detection mechanisms are annularly and uniformly distributed at the same height and are respectively adhesively installed on the inner side of the electrical control cabinet (not shown in the figure); the receiving mechanism comprises an infrared receiving module W3 and an output circuit 51, the rear end of the shell of the infrared receiving module W3 is fixedly installed at the upper end of the foam fire extinguisher body 1; the power module W1, the power switch S1, the trigger circuit 41 of multiple sets of detection mechanisms and the output circuit 51 are installed in the element box 6 at the left end of the shell.

[0019] Figure 1 、 2As shown in the figure, the infrared emission module W2 and the infrared receiving module W3 are in a horizontal plane, and the emission head of the infrared emission module W2 and the receiving head of the infrared receiving module W3 are in a face-to-face structure. The receiving head of the infrared receiving module W3 and the nozzle of the foam fire extinguisher body are in a vertical plane. The lower ends of the balls of the plurality of universal ball bearing 7 are in rolling contact with the outer side of the upper end of the shell 2 (when the foam fire extinguisher body rotates, the bearing supports the rotation). The heat-sensitive resistor RT of the plurality of detection mechanisms is in close contact with the inner side of the electrical control cabinet. The trigger circuit of each detection mechanism includes resistors R1 and R2, a transistor Q1, a relay J1, and a diode VD connected through the circuit board. The positive power input end of the relay J1 is connected to the positive power input end, one end of the first resistor R1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the negative power input end of the relay J1, the other end of the first resistor R1 is connected to the emitter of the transistor Q1, and the positive electrode of the diode VD is connected to the normally open contact end of the relay J1. The output circuit includes a relay J2 and a time control switch W4 connected through the circuit board. The negative power input end of the relay J2, the control power input end of the relay J2, and the negative power input end 2 pin of the time control switch W4 are connected. The positive power input end of the relay J2 is connected to the positive power input end 1 pin of the time control switch W4. The negative electrode of the diode VD of the trigger circuit of the plurality of detection mechanisms is connected to the positive power input end of the motor speed reduction mechanism M through a wire, and the normally closed contact end of the relay J2 of the output circuit is connected to the negative power input end of the motor speed reduction mechanism M through a wire.

[0020] Figure 1 、 2As shown in the figure, the power input terminals 1 and 2 of the power module W1 are connected to the two poles of the AC power supply through wires, and the power output terminals 3 and 4 of the power module W1 are connected to the positive power input terminal of the relay J1 and the emitter of the transistor Q1 of the detection mechanism, and the power input terminals 1 and 2 of the power switch S1 through wires. The power output terminals 3 and 4 of the power switch S1 are connected to the positive and negative power input terminals of the electric push rod M1 through wires. The two ends of the thermistor RT of each detection mechanism are connected to the signal input terminal of the trigger circuit, the positive power input terminal of the relay J1 and one end of the resistor R1 through wires. The power output terminal of the trigger circuit of each detection mechanism is connected to the normally open contact terminal of the relay J1, the emitter of the transistor Q1 and the power input terminals 1 and 2 of the infrared emission module W2 through wires. The negative pole of the power output terminal of the detection mechanism, the power input terminal of the motor speed reducer M and the power input terminals 1 and 2 of the infrared receiving module W3 of the receiving mechanism are connected through wires. The signal output terminals 3 and 2 of the infrared receiving module W3 are connected to the signal input terminal of the output circuit, the positive power input terminal of the relay J2 and the negative power input terminal through wires, and the power output terminals 3 and 4 of the output circuit are connected to the positive and negative power input terminals of the electric push rod M1 through wires. Figure 2 In the figure, the power module W1 is an AC 220V to DC 12V power module finished product; the type of the transistor Q1 is 9013 (NPN); the type of the diode VD is 1N4007; the types of the relays J1 and J2 are DC12V; the resistances R1 and R2 have resistance values of 4.7K and 42K respectively; the time control switch W4 is a time controller finished product of type KG316T, which has two power input terminals, two power output terminals and seven setting keys, and can set the time of the power output from the two power output terminals by operating multiple keys; the thermistor RT is a negative temperature coefficient thermistor of type NTC103D; the electric push rod M1 is a small reciprocating electric telescopic rod finished product with a power of 5W; the motor speed reducer M is a coaxial motor gear reducer finished product with a power of 50W; the infrared emission module W2 and the infrared receiving module W3 are infrared emission and infrared receiving assembly finished products of type E3F-5DN1 (the infrared emission assembly has multiple groups), the infrared emission assembly has two power input terminals, and emits an infrared light beam after being powered on; the infrared receiving assembly has two power input terminals and one signal output terminal, and the signal output terminal outputs a high level after the receiving head receives the infrared light beam, and does not output a high level without receiving the infrared light beam.

[0021] Figure 1 、 2As shown in the figure, the AC 220V power supply enters the power input end of the power module W1, and then its 3, 4 feet output stable DC 12V power supply to the power supply input end of the power switch S1 and multiple sets of detection mechanism. When the relevant position in the power distribution cabinet does not overheat (such as below 100 degrees), the heat received by the temperature sensing surface of the corresponding position detection mechanism thermistor RT is relatively low, its resistance value is relatively large and the voltage division between the resistor R1 is large, the 12V power supply is divided by the thermistor RT and the resistor R1, the voltage of the resistor R2 is reduced and limited to enter the base of the transistor Q1, which is lower than 0.7V, the transistor Q1 will not be turned on, the relay J1 will not be powered and attracted, and the motor speed reduction mechanism and the receiving mechanism will not be powered and worked. When the corresponding position in the power distribution cabinet overheats (such as above 100 degrees), the heat received by the temperature sensing surface of the corresponding set of detection mechanism thermistor RT is relatively high, its resistance value is relatively small and the voltage division between the resistor R1 is small, the 12V power supply is divided by the thermistor RT and the resistor R1, the voltage of the resistor R2 is reduced and limited to enter the base of the transistor Q1, which is higher than 0.7V, the transistor Q1 will be turned on, the relay J1 will be powered and attracted to control the power input end and the normally open contact end to close, so that the infrared emitter module W2 of the corresponding set of detection mechanism will be powered and worked, and its emission head will emit infrared light beam straight. In the new type, after the relay J1 of any set of detection mechanism is powered and attracted, the 12V power supply will enter the infrared receiver module W3 and the positive power input end of the motor speed reduction mechanism M through the relay J1 control power input end and normally open contact end and one-way conduction of diode VD (due to the reverse blocking effect of diode VD, after the relay J1 of the corresponding detection mechanism is powered and attracted, the 12V power supply will not enter the positive power input end of the infrared emitter module of other detection mechanism through diode VD), and the motor speed reduction mechanism and the receiving mechanism will be powered and worked. After the motor speed reduction mechanism M1 is powered and worked, its rotating shaft drives the foam extinguishing agent body 1 and the infrared receiver module W3 to rotate clockwise (rotation speed 10 seconds per revolution); since the corresponding set of infrared emitter module W2 is powered and emits infrared light beam (that is, the corresponding temperature highest point position in the power distribution cabinet), when the infrared receiver module W3 rotates and aligns with the corresponding position, the infrared light beam emitted by the corresponding set of infrared emitter module W2 is irradiated on the light receiving surface of the infrared receiver module W3, the 3 feet of the infrared receiver module W3 output high level to the power input end of the relay J2 and the time control switch W4, the relay J2 is powered and attracted, its control power input end and normally closed contact end are open, since the normally closed contact end of the relay J2 is connected with the negative power input end of the motor speed reduction mechanism M, at this moment the motor speed reduction mechanism M will lose power and not work, ensuring that the nozzle of the foam extinguishing agent body 1 can effectively aim at the temperature abnormal point. After the time control switch W4 is powered, its 3, 4 feet will output 4 seconds power to the positive and negative power input end of the electric push rod M, so that the movable column of the electric push rod M drives the rear upper end movable handle of the extinguisher body to move down a distance and stop, and then the nozzle of the electric extinguishing agent body sprays out the extinguishing foam agent towards the front end, which can effectively extinguish the fire at the temperature abnormal point.

[0022] Figure 1 、 2 As shown in the above, by the above, the novel multiple detection mechanism can monitor multiple temperature points in the related equipment, the first time when the corresponding point occurs fire can automatically control the motor speed reduction mechanism, the infrared receiving module and the foam fire extinguishing agent body to rotate, the first time when the infrared receiving module rotates to the temperature abnormal point can make the motor speed reduction mechanism stop working, and the foam fire extinguishing agent body can relatively accurately automatically extinguish fire at the temperature abnormal point, and the probability of fault expansion is reduced. In the novel, if the temperature of multiple positions in the power distribution cabinet body is over-temperature, but the foam fire extinguisher body 1 can extinguish fire at one temperature abnormal point (fire point) in the power distribution cabinet body, compared with the existing manual fire extinguishing, better fire extinguishing timeliness can be achieved, and better fire extinguishing effect can be achieved. The subsequent staff of the novel can turn on the power switch, so that the positive and negative power input ends of the electric push rod M1 are powered, so that the movable column of the electric push rod M drives the rear upper end movable handle of the fire extinguisher body to move upward by a distance and stop, so as to prepare for the next fire extinguishing operation of the fire extinguisher body filled with fire extinguishing agent.

[0023] The basic principle and main features of the present application are shown and described, and the advantages of the present application are shown and described, and for those skilled in the art, it is obvious that the present application is limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0024] In addition, it should be understood that, although the present application is described in the form of an embodiment, the embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An automatic fire extinguishing apparatus comprising a manual foam fire extinguisher body, a motor reduction mechanism, an electric push rod, a housing, characterized in that, It also has a detection mechanism, receiving mechanism; the shell upper end has an opening, motor reducer mechanism is installed in the shell, and the upper end of the rotating shaft of the motor reducer mechanism is located outside the upper end of the shell, the upper end of the rotating shaft is installed with a support plate, the lower end of the support plate is installed with a plurality of universal ball head bearings, the foam fire extinguisher body is installed on the upper end of the support plate; the upper and lower handle of the foam fire extinguisher body and the upper and lower end of the electric push rod are respectively hinged together; the detection mechanism has a plurality of sets, each set of detection mechanism includes a thermistor, an infrared emission module, a trigger circuit, a shell, the rear end of the shell has an opening, the thermistor is installed in the rear side of the shell, and the heated surface of the thermistor and the rear end of the shell are in a vertical plane, the infrared emission module is installed in the front end of the shell, and the emission surface of the infrared emission module is located in the front of the shell, the rear end of the shell of the plurality of sets of detection mechanism is respectively installed in the inside of the electrical control cabinet; the receiving mechanism includes an infrared receiving module and an output circuit, the rear end of the shell of the infrared receiving module is installed on the upper end of the foam fire extinguisher body; the trigger circuit and the output circuit of the plurality of sets of detection mechanism are installed in the shell; the signal output end of the thermistor of each set of detection mechanism and the signal input end of the trigger circuit are electrically connected, the output end of the trigger circuit and the power input end of the infrared emission module are electrically connected, the power output end of the plurality of sets of detection mechanism and the power input end of the motor reducer mechanism and the receiving mechanism are electrically connected; the signal output end of the infrared receiving module and the signal input end of the output circuit are electrically connected, and the power output end of the output circuit and the power input end of the electric push rod are electrically connected.

2. An automatic fire extinguishing apparatus according to claim 1, wherein The infrared emission module and the infrared receiving module are in a horizontal plane.

3. An automatic fire extinguishing apparatus according to claim 1, wherein The receiving head of the infrared receiving module and the nozzle of the foam fire extinguisher body are in a vertical plane.

4. An automatic fire extinguishing apparatus according to claim 1, wherein The lower end of the ball of the plurality of universal ball head bearings and the upper end of the shell are in rolling contact.

5. An automatic fire extinguishing apparatus according to claim 1, wherein The heated surface of the thermistor of the plurality of sets of detection mechanism and the inside of the electrical control cabinet are in contact.

6. An automatic fire extinguishing apparatus according to claim 1, wherein The trigger circuit of each set of detection mechanism includes a resistance, a triode, a relay, and a diode, the positive power input end of the relay and the positive power input end are connected, the one end of the first resistance and the one end of the second resistance are connected, the other end of the second resistance and the base of the triode are connected, the collector of the triode and the negative power input end of the relay are connected, the other end of the first resistance and the emitter of the triode are connected, and the positive electrode of the diode and the normally open contact end of the relay are connected.

7. An automatic fire extinguishing apparatus according to claim 1, wherein The output circuit includes a relay and a time control switch, The negative power input end of the relay, the control power input end of the relay, and the negative power input end of the time control switch are connected, and the positive power input end of the relay and the positive power input end of the time control switch are connected.

8. An automatic fire extinguishing apparatus according to claim 6, wherein The negative electrode of the diode of the trigger circuit of the plurality of sets of detection mechanism and the positive power input end of the motor reducer mechanism are connected, and the normally closed contact end of the relay of the output circuit and the negative power input end of the motor reducer mechanism are connected.

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