Fire extinguishing device for power distribution cabinet

Abstract

The utility model relates to the field of fire extinguishing, and discloses a power distribution cabinet fire extinguishing device which comprises a box body, the box body is provided with a central chamber, the box body is provided with a motor, the central chamber is provided with a temperature sensor and a smoke sensor, the box body is provided with a controller, the controller is electrically connected with the motor, the temperature sensor and the smoke sensor, and the box body is provided with an air pump. The air pump is electrically connected with the controller, the central chamber is provided with a pipe body, the pipe body is provided with a through hole, the air pump is connected with the pipe body, the central chamber is provided with a transmission belt in a transmission mode, the transmission belt is in one-way linkage with the motor, and a brush body is arranged on the surface of the transmission belt and tangent to the lower surface of the central chamber. When the controller controls the motor to rotate reversely, the pawl drives the ratchet sleeve to rotate so as to drive the sleeve to rotate, the sleeve drives the rotating shaft to rotate through the driving gear and the driven gear, and the diameter of the driven gear is smaller than that of the driving gear, so that the rotating speed of the rotating shaft is larger than that of the sleeve, and the brush body quickly cleans solid impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing, in particular to a fire extinguishing device for a power distribution cabinet. Background Art

[0002] As a special fire fighting equipment, the fire extinguishing device of the distribution cabinet is mainly used to protect the electrical equipment inside the distribution cabinet from the harm of fire. Although some fire extinguishing devices have been designed for distribution cabinets, there are still some shortcomings.

[0003] The Chinese utility model patent with authorization announcement number CN220714625U discloses an automatic induction fire extinguishing device for a mining power distribution cabinet, including a central chamber, a pair of side wall chambers and a bearing chamber, the side wall chambers are located on both sides of the central chamber, the bearing chamber is located on the central chamber and the lower wall of a pair of side wall chambers, and the electrical equipment is arranged in the central chamber. When the electrical equipment catches fire, smoke is generated. At this time, the smoke sensor detects the smoke signal, and then the pump body guides the material in the carbon dioxide fire extinguisher into the three-way pipe, and then into the pipe body, and sprays it into the central chamber through the through hole, thereby extinguishing the fire of the electrical equipment.

[0004] However, the existing technology still has the following technical problems: first, some aerosol fire extinguishing agents may leave solid particles and gas mixtures in the protection area after being sprayed. These residues may pollute precision electronic equipment, affect their normal operation and even cause short circuits; second, aerosol fire extinguishing will quickly fill the entire protection area, causing a sharp drop in visibility in the area, which is not suitable for situations where personnel need to be evacuated quickly and safely or for emergency operations. Utility Model Content

[0005] The utility model aims to provide a fire extinguishing device for a power distribution cabinet, which has the effects of cleaning solid particles and evacuating gas after extinguishing the fire.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a fire extinguishing device for a distribution cabinet, comprising a box body, a central chamber provided in the box body, a motor installed in the box body, a temperature sensor and a smoke sensor installed in the central chamber, a controller installed in the box body, the controller is electrically connected to the motor, the temperature sensor and the smoke sensor, an air pump is installed in the box body, the air pump is electrically connected to the controller, a pipe body is installed in the central chamber, a through hole is opened in the pipe body, the air pump is connected to the pipe body, a transmission belt is provided for the transmission of the central chamber, the transmission belt is unidirectionally linked with the motor, a brush body is provided on the surface of the transmission belt, and the brush body is tangent to the lower surface of the central chamber.

[0007] By adopting the above technical scheme, by setting a temperature sensor, when a fire occurs, the smoke sensor detects the smoke and transmits a signal to the controller. While the distribution box is extinguishing the fire, the controller controls the temperature sensor to turn on and monitor the temperature in the box until the temperature drops to a normal temperature value. The temperature sensor transmits a signal to the controller, and the controller turns off the power supply of the temperature sensor, so that the temperature sensor can only detect the temperature after the fire occurs. The purpose; by setting a transmission belt, the motor and the transmission belt are unidirectionally linked, the signal of the smoke sensor drives the motor to rotate forward, and the signal of the temperature sensor drives the motor to reverse, so when the temperature reaches the normal temperature value, the motor drives the baffle to move, the vent opens, and the motor drives the transmission belt to rotate at the same time, and the transmission belt drives the brush body to clean the solid particles. While the transmission belt rotates, the controller controls the air pump to blow air, and the natural gas is sprayed to the central chamber through the through hole, and the particulate impurities in the room are blown to the bottom surface. At the same time, the gas can also be blown out from the ventilation hole, which can achieve the purpose of cleaning solid particles and evacuating gas.

[0008] The utility model is further configured as follows: the box body is rotatably connected to a rotating rod, the motor drives the rotating rod to rotate, the box body is rotatably connected to a sleeve, the sleeve is outermost of the rotating rod, a pawl is provided on the outer ring of the rotating rod, a ratchet sleeve is provided on the inner ring of the sleeve, and the rotation direction of the ratchet sleeve intersects with the pawl.

[0009] By adopting the above technical solution, the smoke sensor detects smoke and transmits a signal to the controller. The controller drives the motor to rotate forward. At this time, the pawl is not engaged with the ratchet sleeve, and the back of the pawl slides across the ratchet teeth of the ratchet sleeve. The motor only drives the rotating rod to rotate. When the fire is extinguished, the temperature sensor detects the temperature and transmits a signal to the controller. The controller drives the motor to reverse. At this time, the pawl is engaged with the ratchet sleeve, and the rotation of the ratchet sleeve drives the sleeve to rotate.

[0010] The utility model is further configured as follows: the bottom end of the central chamber is rotatably connected to a rotating shaft, the outer ring of the rotating shaft is coaxially provided with a rotating roller, the transmission belt is transmission-connected to the outer surface of the rotating roller, and the brush body is connected to the surface of the transmission belt.

[0011] The utility model is further configured as follows: the outer ring of the sleeve is provided with a driving wheel, the outer ring of the rotating shaft is provided with a driven wheel, and the driving wheel is linked with the driven wheel.

[0012] By adopting the above technical solution, by setting a driving wheel and a driven wheel, the sleeve drives the driven wheel to rotate through the driving wheel, the driven wheel drives the rotating shaft to rotate, the rotating shaft drives the transmission belt and the brush body to rotate and clean the bottom end of the center chamber, thereby achieving the purpose of one-way linkage between the motor and the transmission belt.

[0013] The utility model is further configured as follows: the driving wheel and the driven wheel are both configured as pulleys and are connected via belts.

[0014] The utility model is further configured as follows: the diameter of the driving wheel is greater than the diameter of the driven wheel.

[0015] By adopting the above technical solution, the rotation speed of the shaft is faster than the rotation speed of the rotating rod, so the purpose of thoroughly cleaning the central chamber can be achieved.

[0016] The utility model is further configured as follows: a storage cavity is provided at the bottom end of the central chamber, a mesh plate is provided on the upper surface of the storage cavity, and a storage box is detachably connected to the storage cavity.

[0017] The utility model is further configured as follows: the box body is installed with a pump body and a gas fire extinguisher, the pump body and the gas fire extinguisher are connected, and the controller is electrically connected to the pump body.

[0018] The utility model is further configured as follows: the box body is equipped with a through pipe, and the through pipe is respectively connected to the air pump, the pump body, and the pipe body.

[0019] The utility model is further configured as follows: a first valve is connected to the connection between the through pipe and the pump body, and a second valve is connected to the connection between the through pipe and the air pump.

[0020] By adopting the above technical solution, by setting the first valve and the second valve, when the air pump inflates, the second valve opens, the first valve spring presses the first valve, and the first valve is closed; when the pump body inflates, the first valve opens, the second valve spring presses the second valve, and the second valve is closed, thereby achieving the purpose of connecting the pipe body to the pipe body.

[0021] The beneficial effect of the utility model is that the controller controls the motor to reverse and at the same time the pawl drives the ratchet sleeve to rotate, thereby driving the sleeve to rotate, and the sleeve drives the rotating shaft to rotate through the driving gear and the driven gear. The diameter of the driven gear is smaller than the driving gear, resulting in the rotating shaft speed being greater than the sleeve speed, so that the brush body can quickly clean up solid impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a front sectional view of the utility model.

[0024] Figure 2 It is a rear view of the utility model.

[0025] Figure 3 yes Figure 2Partial cross-sectional view at the through pipe in the middle DD direction.

[0026] Figure 4 It is a side sectional view of the utility model.

[0027] Figure 5 yes Figure 4 Schematic diagram of the local structure.

[0028] In the figure, 1, box body; 11, motor; 12, controller; 13, air pump; 14, storage chamber; 141, storage box; 142, mesh plate; 15, pump body; 16, gas fire extinguisher; 17, through pipe; 171, first valve; 172, second valve; 2, central chamber; 21, temperature sensor; 22, smoke sensor; 23, tube body; 231, through hole; 24, rotating shaft; 241, rotating roller; 242, transmission belt; 243, brush body; 244, driven wheel; 3, rotating rod; 31, pawl; 4, sleeve; 41, ratchet sleeve; 42, driving wheel. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] A fire extinguishing device for a power distribution cabinet, such as Figure 1-Figure 3 As shown, it includes a box body 1, a motor 11 is installed in the box body 1, a ventilation hole is opened on the side wall of the box body 1, a rotating rod 3 is rotatably connected to the bottom end of the box body 1, and the rotating rod 3 is driven to slide on the baffle in the box body 1 through the symmetrical threads on both sides, so as to open and close the ventilation hole, a central chamber 2 is opened in the box body 1, a smoke sensor 22 and a temperature sensor 21 are installed in the central chamber 2, an air pump 13, a pump body 15, and a gas fire extinguisher 16 are installed on the outside of the box body 1, wherein the pump body 15 and the gas fire extinguisher 16 are connected, a pipe body 23 is installed in the central chamber 2, and a plurality of through holes 231 are opened on the pipe body 23, a through pipe 17 is also installed on the outside of the box body 1, and two ends of the through pipe 17 are respectively connected to the air pump 13 and the pump body 15, and one end of the through pipe 17 away from the outside is penetrated through the box body 1 and connected to the pipe body 23, a first valve 171 is provided at the connection between the through pipe 17 and the pump body 15, and a second valve 172 is provided at the connection between the through pipe 17 and the air pump 13.

[0031] Further, such as Figure 4-Figure 5As shown, the box body 1 is rotatably connected with a sleeve 4, the sleeve 4 is outer-mounted on the rotating rod 3, the inner ring of the sleeve 4 is provided with a ratchet sleeve 41, the outer ring of the rotating rod 3 is provided with a pawl 31, the rotation direction of the pawl 31 and the ratchet sleeve 41 intersect in one direction, the bottom end of the central chamber 2 is rotatably connected with a rotating shaft 24, the sleeve 4 is coaxially provided with a driving wheel 42, the rotating shaft 24 is coaxially provided with a driven wheel 244, the driving wheel 42 and the driven wheel 244 are both configured as pulleys, and the diameter of the driving wheel 42 is larger than that of the driven wheel 2 44 in diameter, a belt is connected between the driving wheel 42 and the driven wheel 244, a rotating roller 241 is coaxially arranged on the rotating shaft 24, a transmission belt 242 is connected to the surface of the rotating roller 241, a brush body 243 is arranged on the surface of the transmission belt 242, the brush body 243 is tangent to the bottom surface of the central chamber 2, a storage chamber 14 is opened at the bottom end of the central chamber 2, a storage box 141 is slidably connected in the storage chamber 14, and a mesh plate 142 is arranged on the top surface of the storage chamber 14.

[0032] Its working principle is as follows: when a fire occurs, the smoke sensor 22 detects the smoke and transmits a signal to the controller 12, the controller 12 drives the pump body 15 to blow the gas in the gas fire extinguisher 16 into the passage 17, at this time the first valve 171 is opened by the air pressure, the second valve 172 is closed by the air pressure, the controller 12 controls the motor 11 to rotate forward, the rotating rod 3 drives the baffle to close the ventilation hole; while the distribution box is extinguishing the fire, the controller 12 controls the temperature sensor 21 to open and monitor the temperature in the box 1 until the temperature drops to a normal temperature value, the temperature sensor 21 transmits a signal to the controller The controller 12 immediately turns off the power supply of the temperature sensor 21, and at the same time, the controller 12 controls the motor 11 to reverse, and the reversal of the motor 11 drives the rotating rod 3 to reverse, and the rotating rod 3 drives the baffle to reset, and the vent is opened. The controller 12 controls the air pump 13 to blow air, and the air pump 13 blows the atmosphere into the central chamber 2, and the atmosphere is ejected from the through hole 231 to blow down the impurity particles. At the same time, the rotating rod 3 drives the sleeve 4 to reverse through the ratchet 31, and the sleeve 4 drives the rotating shaft 24 to rotate. The rotating shaft 24 rotates and drives the transmission belt 242 and the brush body 243 to clean the solid particles, and the solid particles fall into the storage box 141 at the mesh plate 142.

Claims

1. A fire extinguishing device for a power distribution cabinet, comprising a box body (1), the box body (1) being provided with a central chamber (2), the box body (1) being provided with a motor (11), characterized in that: The central chamber (2) is equipped with a temperature sensor (21) and a smoke sensor (22); the housing (1) is equipped with a controller (12); the controller (12) is electrically connected to the motor (11), the temperature sensor (21) and the smoke sensor (22); the housing (1) is equipped with an air pump (13); the air pump (13) is electrically connected to the controller (12); the central chamber (2) is equipped with a tube (23); the tube (23) is provided with a through hole (231); the air pump (13) is connected to the tube (23); the central chamber (2) is provided with a transmission belt (242); the transmission belt (242) is unidirectionally linked to the motor (11); a brush body (243) is provided on the surface of the transmission belt (242); the brush body (243) is tangent to the lower surface of the central chamber (2).

2. A fire extinguishing device for a power distribution cabinet according to claim 1, characterized in that: The housing (1) is rotatably connected to a rotating rod (3), the motor (11) drives the rotating rod (3) to rotate, the housing (1) is rotatably connected to a sleeve (4), the sleeve (4) is externally mounted on the rotating rod (3), a pawl (31) is disposed on the outer ring of the rotating rod (3), a ratchet sleeve (41) is disposed on the inner ring of the sleeve (4), and the rotation direction of the ratchet sleeve (41) intersects with the ratchet sleeve (31).

3. A fire extinguishing device for a power distribution cabinet according to claim 2, characterized in that: The bottom end of the central chamber (2) is rotatably connected to a rotating shaft (24); the outer ring of the rotating shaft (24) is coaxially provided with a rotating roller (241); the transmission belt (242) is transmission-connected to the outer surface of the rotating roller (241); and the brush body (243) is connected to the surface of the transmission belt (242).

4. A fire extinguishing device for a power distribution cabinet according to claim 3, characterized in that: The outer ring of the sleeve (4) is provided with a driving wheel (42), the outer ring of the rotating shaft (24) is provided with a driven wheel (244), and the driving wheel (42) and the driven wheel (244) are linked.

5. A fire extinguishing device for a power distribution cabinet according to claim 4, characterized in that: The driving wheel (42) and the driven wheel (244) are both configured as pulleys and are connected via a belt.

6. A fire extinguishing device for a power distribution cabinet according to claim 5, characterized in that: The diameter of the driving wheel (42) is greater than the diameter of the driven wheel (244).

7. A fire extinguishing device for a power distribution cabinet according to claim 6, characterized in that: A storage cavity (14) is provided at the bottom end of the central chamber (2); a mesh plate (142) is provided on the upper surface of the storage cavity (14); and a storage box (141) is detachably connected to the storage cavity (14).

8. A fire extinguishing device for a power distribution cabinet according to claim 7, characterized in that: The box body (1) is equipped with a pump body (15) and a gas fire extinguisher (16); the pump body (15) and the gas fire extinguisher (16) are connected; and the controller (12) is electrically connected to the pump body (15).

9. A fire extinguishing device for a power distribution cabinet according to claim 8, characterized in that: The box body (1) is equipped with a through pipe (17), and the through pipe (17) is respectively connected to the air pump (13), the pump body (15), and the pipe body (23).

10. A fire extinguishing device for a power distribution cabinet according to claim 9, characterized in that: The connection point between the through pipe (17) and the pump body (15) is connected to a first valve (171), and the connection point between the through pipe (17) and the air pump (13) is connected to a second valve (172).

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