Explosion-proof electrical box with fire extinguishing mechanism

Abstract

The explosion-proof electrical box with the fire extinguishing mechanism comprises an electrical box body and a liquid storage tank, the liquid storage tank is installed at the upper end of the electrical box body, a compressed fire extinguishing agent is stored in the liquid storage tank, a conveying pipeline is installed at the lower end of the liquid storage tank, and the conveying pipeline communicates with an inner cavity of the liquid storage tank; the fire extinguishing mechanism is arranged on the conveying pipeline and used for releasing a compressed fire extinguishing agent into the electrical box body, the fire extinguishing mechanism comprises a first connecting pipeline and a nozzle, the first connecting pipeline is installed on the conveying pipeline, and the rotating mechanism is used for driving the nozzle to rotate so as to enlarge the spraying range. According to the explosion-proof electrical box with the fire extinguishing mechanism, a fire extinguishing agent is released into the electrical box main body through a plurality of spray heads to extinguish fire, and when the spray heads spray the fire extinguishing agent, the fire extinguishing agent can be extinguished through superposition of three characteristics of broken line shape construction, self rotation, multiple atomization holes and self reciprocating displacement of the spray heads; the coverage range of the fire extinguishing agent is larger than that of a traditional fixedly-installed nozzle, and the fire extinguishing effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to an explosion-proof electrical box with a fire extinguishing mechanism. Background Art

[0002] The electrical box is made of steel and is used to protect the normal operation of components. The materials used to make electrical boxes are generally divided into two types: hot-rolled steel plates and cold-rolled steel plates. Cold-rolled steel plates are softer than hot-rolled steel plates and are more suitable for the production of electrical boxes. Electrical boxes are widely used and are mainly used in the chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, transportation industry, etc. The explosion-proof electrical box is a special electrical box with explosion-proof protection measures for the safety of electrical equipment, which is usually achieved by reinforcing the electrical box with special steel. Some electrical boxes are also equipped with fire extinguishing functions to promptly extinguish fires caused by failures and short circuits of related electrical equipment in the electrical box.

[0003] For example, an automatic fire-extinguishing electrical box with publication number CN209060415U includes an electrical box body, the electrical box body is provided with a vent, and the vent is provided with a plurality of shift plates, and the plurality of shift plates can be opened and closed to open or close the vent; a smoke sensor is provided at the center of the top of the electrical box body, and an isolation chamber is provided at one of the corners of the bottom, and the isolation chamber is provided with a low-voltage circuit breaker and a pressure extinguishing device inside, and the pressure extinguishing device includes an electric telescopic rod, a pressure plate and expansion cotton fixed to the top of the isolation chamber; the electrical box body is also provided with a fire extinguishing mechanism, and the fire extinguishing mechanism includes nozzles evenly distributed on the inner wall of the electrical box body, a fire extinguishing bottle outside the electrical box body, and a conduit connecting the fire extinguishing bottle to the nozzle. The utility model can realize the functions of automatic fire extinguishing and fire reminder of the electrical box by arranging a fire extinguishing mechanism, a smoke sensor and an alarm in the electrical box, and will not make the fire further expand, thereby ensuring the safe operation of the electrical box. In the process of realizing the technical solution, the inventor found that there are at least the following problems in the prior art:

[0004] The nozzles used to spray fire extinguishing agents are usually fixedly installed, but there are many electronic devices in the box and the cables are densely distributed, which may cause the location of the fire point to be blocked by other objects. At this time, the coverage area of ​​the fixed-position nozzles may be insufficient, and the fire extinguishing agent cannot be sprayed directly at the fire point in a timely and effective manner, causing delays in fire extinguishing.

[0005] Therefore, we propose an explosion-proof electrical box with a fire extinguishing mechanism to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide an explosion-proof electrical box with a fire extinguishing mechanism to solve the problem proposed in the above background technology that the nozzles for spraying fire extinguishing agents in the existing explosion-proof electrical boxes are usually fixedly installed, while there are many electronic devices in the box and the cables are densely distributed, resulting in the location where the fire point exists being blocked by other objects. At this time, the coverage range of the fixed-position nozzles may be insufficient, and the fire extinguishing agent cannot be sprayed directly at the fire point in a timely and effective manner, resulting in delays in the timing of fire extinguishing.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an explosion-proof electrical box with a fire extinguishing mechanism, comprising an electrical box body and a liquid storage tank, wherein the liquid storage tank is installed at the upper end of the electrical box body, and compressed fire extinguishing agent is stored in the liquid storage tank, the delivery pipe is installed at the lower end of the liquid storage tank, and the delivery pipe is connected to the inner cavity of the liquid storage tank, the fire extinguishing mechanism is arranged on the delivery pipe for releasing compressed fire extinguishing agent into the electrical box body, the fire extinguishing mechanism comprises a first connecting pipe and a nozzle, the first connecting pipe is installed on the delivery pipe, the nozzle is connected to the first connecting pipe, the compressed fire extinguishing agent in the liquid storage tank enters the delivery pipe and is sprayed into the electrical box body through the nozzle for extinguishing the fire, and the rotating mechanism is used to drive the nozzle to rotate to expand the spraying range.

[0008] By adopting the above technical solution, the nozzle is driven by the rotating mechanism to spray the fire extinguishing agent in a rotating manner, which can expand the coverage of the fire extinguishing agent compared to the nozzle in a fixed position.

[0009] Preferably, the nozzle is in a zigzag shape, and is provided with a plurality of atomization holes arranged in a grid shape.

[0010] By adopting the above technical solution, by setting the nozzle in a zigzag shape, the coverage of the fire extinguishing agent can be further expanded, and the grid-shaped atomization hole setting enables the fire extinguishing agent to be finally sprayed out in an atomized manner through a plurality of atomization holes.

[0011] Preferably, the rotating mechanism includes a first circular chamber, a first rotating rod and a first impeller, the first circular chamber is installed on the conveying pipe, the inner cavity of the first circular chamber is connected to the inner cavity of the conveying pipe, one end of the first rotating rod is rotatably installed on the inner wall of the first circular chamber, the other end of the first rotating rod movably passes through the side end of the first rotating rod and the inner wall of the electrical box body and extends to the inner cavity of the electrical box body, one end of the first rotating rod extending to the inner cavity of the electrical box body is connected to the nozzle, the first impeller is fixedly installed on the surface part of the first rotating rod located in the inner cavity of the first circular chamber, and the upper part of the first impeller extends into the conveying pipe.

[0012] By adopting the above technical solution, by installing the first circular chamber and the first impeller, the high-pressure fluid generated in the delivery pipeline when the compressed fire extinguishing agent is released can be used as power to drive the first rotating rod to rotate.

[0013] Preferably, the rotating mechanism also includes a second connecting pipe, two pulleys and a belt, the first connecting pipe is L-shaped, the second connecting pipe is rotatably installed on the first connecting pipe, the nozzle is slidably installed in the second connecting pipe, the two pulleys are respectively fixedly installed on the first rotating rod and the second connecting pipe, and the belt transmission is connected to the two pulleys.

[0014] By adopting the above technical solution, the first rotating rod and the nozzle are driven by the pulley and the belt.

[0015] Preferably, the conveying pipeline includes a first vertical section, a first horizontal section, two second horizontal sections, two second vertical sections, two third horizontal sections and a fourth horizontal section which are connected in sequence.

[0016] By adopting the above technical solution, the delivery pipeline is designed with multiple sections of bends, so that the delivery pipeline can be distributed to various inner walls of the electrical box body.

[0017] Preferably, a plurality of the fire extinguishing mechanisms and the rotating mechanisms are provided, and the plurality of the fire extinguishing mechanisms and the plurality of the rotating mechanisms are linearly arranged on the two second horizontal sections and the two third horizontal sections.

[0018] By adopting the above technical solution and installing a plurality of fire extinguishing mechanisms, the fire extinguishing effect is improved by covering the upper, lower, left and right inner walls of the electrical box body.

[0019] Preferably, it also includes a reciprocating displacement mechanism, which is used to drive the nozzle to slide back and forth to expand the spraying range. The reciprocating displacement mechanism includes a slide seat, which is slidably mounted on the inner wall of the electrical box body, and several nozzles are rotatably connected to the slide seat.

[0020] By adopting the above technical solution, the left and right movement of the sliding seat can drive a plurality of nozzles to move left and right, thereby further expanding the coverage of the fire extinguishing agent.

[0021] Preferably, the reciprocating shifting mechanism also includes a second rotating rod, a rotating disk, a connecting shaft, a transmission rod and a hinge shaft, the second rotating rod is rotatably mounted on the inner wall of the electrical box body, the rotating disk is fixedly mounted on one end of the second rotating rod extending to the inner cavity of the electrical box body, and the rotating disk and the second rotating rod are coaxially arranged, the connecting shaft is fixedly mounted on the side end of the rotating disk deviating from the center of the circle, one end of the transmission rod is rotatably mounted on the connecting shaft, and the other end of the transmission rod is movably hinged to the lower end of the slide seat through a hinge shaft.

[0022] By adopting the above technical solution, the sliding seat can be driven to move back and forth by the rotation of the second rotating rod.

[0023] Preferably, the reciprocating displacement mechanism also includes a second circular chamber and a second impeller, the second circular chamber is on the first horizontal section, and the inner cavity of the second circular chamber is connected to the inner cavity of the conveying pipe, one end of the second rotating rod is rotatably connected to the inner wall of the second circular chamber, the second impeller is fixedly mounted on the surface portion of the second rotating rod located in the inner cavity of the first circular chamber, and the upper part of the second impeller extends into the first horizontal section.

[0024] By adopting the above technical solution, by installing the second circular chamber and the second impeller, the high-pressure fluid generated in the delivery pipeline when the compressed fire extinguishing agent is released can be used as power to drive the slide to move back and forth.

[0025] Preferably, a fire alarm and a pressure relief valve are also installed in the electrical box body, and a solenoid valve is installed in the first vertical section. The fire alarm is used to monitor the fire situation in the electrical box body. The fire alarm is electrically connected to the solenoid valve, and the pressure relief valve is used to control the air pressure in the electrical box body.

[0026] By adopting the above technical scheme, the pressure inside the electrical box body can be balanced by the pressure relief valve to play an auxiliary explosion-proof role, the fire situation inside the electrical box body can be monitored by the fire alarm, and when a fire is detected, the solenoid valve is opened through the signal control, so that the compressed fire extinguishing agent in the liquid storage tank enters the delivery pipeline and is sprayed into the electrical box body through a number of nozzles to extinguish the fire.

[0027] Compared with the prior art, the invention has the following beneficial effects: the explosion-proof electrical box with a fire extinguishing mechanism releases a fire extinguishing agent into the electrical box body through a plurality of nozzles to extinguish a fire, and when the nozzle sprays the fire extinguishing agent, the nozzle has three characteristics: a folded-line structure, self-rotation, multiple atomization holes, and self-reciprocating displacement, so that the coverage of the fire extinguishing agent is larger than that of a traditional fixed nozzle, and the fire extinguishing effect is better;

[0028] 1. A fire alarm and a solenoid valve are provided. The fire alarm can monitor in real time whether there is a fire in the main body of the electrical box. When a fire occurs, the solenoid valve is opened through a signal to release the compressed fire extinguishing agent stored in the storage tank. The compressed fire extinguishing agent flows in the delivery pipeline at a very high pressure and speed, and is released into the main body of the electrical box through a number of nozzles to extinguish the fire;

[0029] 2. The rotating mechanism and reciprocating mechanism are provided, which can make the nozzle rotate continuously when spraying the fire extinguishing agent. In addition, the reciprocating mechanism drives several nozzles to move back and forth left and right, thereby further expanding the coverage of the fire extinguishing agent. The two movement modes of the nozzle do not hinder each other;

[0030] 3. A first impeller and a second impeller are provided, and the flow of the fire extinguishing agent in the delivery pipeline when released is used as power to drive the delivery pipeline to rotate and move back and forth, without the need for an additional power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the external three-dimensional structure of the electrical box body of the present invention;

[0032] Figure 2 It is a schematic diagram of the first main cross-sectional structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the second main cross-sectional structure of the present invention;

[0034] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0035] Figure 5 It is a schematic diagram of the third main cross-sectional structure of the present invention;

[0036] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the electrical box body of the present invention;

[0037] Figure 7 It is a schematic diagram of the exploded structure of the reciprocating displacement mechanism of the present invention;

[0038] Figure 8 It is a schematic diagram of the exploded structure of the rotating mechanism of the present invention.

[0039] In the figure: 1. electrical box body; 2. liquid storage tank; 201. delivery pipeline; 2011. first vertical section; 2012. first horizontal section; 2013. second horizontal section; 2014. second vertical section; 2015. third horizontal section; 2016. fourth horizontal section; 202. solenoid valve; 3. fire extinguishing mechanism; 301. first connecting pipeline; 302. nozzle; 303. atomizing hole; 4. rotating mechanism; 401. first circular chamber; 402. first rotating rod; 403. first impeller; 404. second connecting pipeline; 405. pulley; 406. belt; 5. reciprocating displacement mechanism; 501. slide seat; 502. second rotating rod; 503. turntable; 504. connecting shaft; 505. transmission rod; 506. hinge shaft; 507. second circular chamber; 508. second impeller; 6. fire alarm; 7. pressure relief valve. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-8 The present invention provides a technical solution: an explosion-proof electrical box with a fire extinguishing mechanism, comprising an electrical box body 1 and a liquid storage tank 2, the liquid storage tank 2 is installed at the upper end of the electrical box body 1, and the liquid storage tank 2 stores compressed fire extinguishing agent, a delivery pipe 201 is installed at the lower end of the liquid storage tank 2, and the delivery pipe 201 is communicated with the inner cavity of the liquid storage tank 2, a fire extinguishing mechanism 3 is arranged on the delivery pipe 201 for releasing compressed fire extinguishing agent into the electrical box body 1, the fire extinguishing mechanism 3 comprises a first connecting pipe 301 and a nozzle 302, the first connecting pipe 301 is installed on the delivery pipe 201, the nozzle 302 is connected to the first connecting pipe 301, the compressed fire extinguishing agent in the liquid storage tank 2 enters the delivery pipe 201 and is sprayed into the electrical box body 1 through the nozzle 302 for extinguishing the fire, and the rotating mechanism 4 is used to drive the nozzle 302 to rotate to expand the spraying range.

[0042] The nozzle 302 is in a zigzag shape, and is provided with a plurality of atomization holes 303 arranged in a grid shape.

[0043] After the compressed fire extinguishing agent is released through the liquid storage tank 2 into the delivery pipe 201, it enters the first connecting pipe 301 and is finally released through the nozzle 302. The spraying range of the fire extinguishing agent can be expanded by setting the nozzle 302 in a broken line shape, and it can be further expanded by spraying in the form of atomization through the plurality of atomization holes 303.

[0044] Embodiment 1: Figure 2-8 As shown, the rotating mechanism 4 includes a first circular chamber 401, a first rotating rod 402 and a first impeller 403. The first circular chamber 401 is installed on the conveying pipe 201. The inner cavity of the first circular chamber 401 is connected to the inner cavity of the conveying pipe 201. One end of the first rotating rod 402 is rotatably installed on the inner wall of the first circular chamber 401. The other end of the first rotating rod 402 movably passes through the side end of the first rotating rod 402 and the inner wall of the electrical box body 1 and extends to the inner cavity of the electrical box body 1. One end of the first rotating rod 402 extending to the inner cavity of the electrical box body 1 is connected to the nozzle 302. The first impeller 403 is fixedly installed on the surface part of the first rotating rod 402 located in the inner cavity of the first circular chamber 401, and the upper part of the first impeller 403 extends into the conveying pipe 201.

[0045] The rotating mechanism 4 also includes a second connecting pipe 404, two pulleys 405 and a belt 406. The first connecting pipe 301 is L-shaped. The second connecting pipe 404 is rotatably installed on the first connecting pipe 301. The nozzle 302 is slidably installed in the second connecting pipe 404. The two pulleys 405 are respectively fixedly installed on the first rotating rod 402 and the second connecting pipe 404. The belt 406 is transmission connected to the two pulleys 405.

[0046] When the high-pressure fire extinguishing agent flows through the delivery pipe 201, the first impeller 403 can be continuously driven to rotate, thereby driving the first rotating rod 402 to rotate. The first rotating rod 402 drives the second connecting pipe 404 to rotate through the transmission of the belt 406 and the two pulleys 405, thereby driving the nozzle 302 to rotate. The connection part between the nozzle 302 and the second connecting pipe 404 is set to a non-circular shape, such as a rectangle, so that the transmission can drive the nozzle 302 to rotate without affecting the left and right movement of the nozzle 302 driven by the reciprocating displacement mechanism 5.

[0047] Embodiment 2: Figure 2-8 As shown, the conveying pipeline 201 includes a first vertical section 2011, a first horizontal section 2012, two second horizontal sections 2013, two second vertical sections 2014, two third horizontal sections 2015 and a fourth horizontal section 2016 which are connected in sequence.

[0048] A plurality of fire extinguishing mechanisms 3 and a plurality of rotating mechanisms 4 are provided, and the plurality of fire extinguishing mechanisms 3 and the plurality of rotating mechanisms 4 are linearly arranged on the two second horizontal sections 2013 and the two third horizontal sections 2015 .

[0049] It also includes a reciprocating displacement mechanism 5, which is used to drive the nozzle 302 to slide back and forth to expand the spraying range. The reciprocating displacement mechanism 5 includes a slide 501, which is slidably installed on the inner wall of the electrical box body 1, and a plurality of nozzles 302 are rotatably connected to the slide 501.

[0050] The reciprocating shifting mechanism 5 also includes a second rotating rod 502, a rotating disk 503, a connecting shaft 504, a transmission rod 505 and a hinge shaft 506. The second rotating rod 502 is rotatably mounted on the inner wall of the electrical box body 1, the rotating disk 503 is fixedly mounted on one end of the second rotating rod 502 extending to the inner cavity of the electrical box body 1, and the rotating disk 503 and the second rotating rod 502 are coaxially arranged. The connecting shaft 504 is fixedly mounted on the side end of the rotating disk 503 deviating from the center of the circle, one end of the transmission rod 505 is rotatably mounted on the connecting shaft 504, and the other end of the transmission rod 505 is movably hinged to the lower end of the slide 501 through the hinge shaft 506.

[0051] The reciprocating displacement mechanism 5 also includes a second circular chamber 507 and a second impeller 508. The second circular chamber 507 is on the first horizontal section 2012, and the inner cavity of the second circular chamber 507 is connected to the inner cavity of the conveying pipe 201. One end of the second rotating rod 502 is rotatably connected to the inner wall of the second circular chamber 507. The second impeller 508 is fixedly installed on the surface portion of the second rotating rod 502 located in the inner cavity of the first circular chamber 401, and the upper part of the second impeller 508 extends into the first horizontal section 2012.

[0052] Similarly, the second circular chamber 507 and the second impeller 508 drive the second rotating rod 502 to rotate under the drive of the fire extinguishing agent, and the second rotating rod 502 drives the turntable 503 to rotate. The turntable 503 is then driven by the transmission rod 505, so that the slide 501 slides left and right along the inner wall of the electrical box body 1. Under the limit, the electrical box body 1 makes a reciprocating linear displacement in the left and right directions, thereby driving a plurality of nozzles 302 to move back and forth left and right.

[0053] Embodiment 3: Figure 2-8 As shown, a fire alarm 6 and a pressure relief valve 7 are also installed in the electrical box body 1, and a solenoid valve 202 is installed in the first vertical section 2011. The fire alarm 6 is used to monitor the fire situation in the electrical box body 1. The fire alarm 6 is electrically connected to the solenoid valve 202, and the pressure relief valve 7 is used to control the air pressure in the electrical box body 1.

[0054] The fire alarm 6 is used to monitor the fire situation, and the pressure relief valve 7 is used to relieve the pressure in the electrical box body 1 when the air pressure is too high, playing an auxiliary explosion-proof role.

[0055] Working principle: When using the explosion-proof electrical box with fire extinguishing mechanism, first, Figure 1-8As shown, the environment inside the electrical box body 1 is detected by the fire alarm 6. When the fire alarm 6 is working, it senses discrete light sources, tiny smoke particles and aerosol detection through the internal intelligent processor to determine whether a fire occurs. When the fire alarm 6 determines that the ring network box electrical box body 1 is on fire, the fire alarm 6 transmits instructions by electrically connecting the solenoid valve 202 to open the solenoid valve 202, so that the compressed fire extinguishing agent stored in the liquid storage tank 2 enters the delivery pipeline 201 at a faster speed and pressure under the action of the pressure difference, and finally enters the plurality of nozzles 302 through a plurality of first connecting pipes 301 and a plurality of second connecting pipes 404, and is atomized through a plurality of atomizing holes 303 and released in the electrical box body 1 to extinguish the fire. At the same time, the first impeller 403 and the second impeller 508 are rotated by the push of the high-pressure fluid of the fire extinguishing agent, driving the rotating mechanism 4 and the reciprocating displacement mechanism 5 to operate, driving the plurality of nozzles 302 to rotate while reciprocating left and right to expand the coverage of the fire extinguishing agent.

[0056] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An explosion-proof electrical box with a fire extinguishing mechanism, comprising an electrical box body (1); It is characterized in that Also includes: A liquid storage tank (2), the liquid storage tank (2) being installed at the upper end of the electrical box body (1), and the liquid storage tank (2) storing compressed fire extinguishing agent; A delivery pipeline (201), the delivery pipeline (201) being installed at the lower end of the liquid storage tank (2), and the delivery pipeline (201) being in communication with the inner cavity of the liquid storage tank (2); A fire extinguishing mechanism (3), the fire extinguishing mechanism (3) being arranged on the delivery pipe (201) and used for releasing compressed fire extinguishing agent into the electrical box body (1), the fire extinguishing mechanism (3) comprising a first connecting pipe (301) and a nozzle (302); A first connecting pipe (301), the first connecting pipe (301) being installed on the conveying pipe (201); A nozzle (302), the nozzle (302) being connected to the first connecting pipe (301), the compressed fire extinguishing agent in the liquid storage tank (2) entering the delivery pipe (201) and being sprayed into the electrical box body (1) through the nozzle (302) to extinguish the fire; A rotating mechanism (4), wherein the rotating mechanism (4) is used to drive the spray head (302) to rotate so as to expand the spraying range.

2. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 1, characterized in that: The nozzle (302) is in a folded line shape, and is provided with a plurality of atomization holes (303) arranged in a grid shape.

3. The explosion-proof electrical box with a fire extinguishing mechanism according to claim 1, characterized in that: The rotating mechanism (4) comprises a first circular chamber (401), a first rotating rod (402) and a first impeller (403); A first circular chamber (401), wherein the first circular chamber (401) is installed on the delivery pipe (201), and the inner cavity of the first circular chamber (401) is connected to the inner cavity of the delivery pipe (201); A first rotating rod (402), one end of which is rotatably mounted on the inner wall of the first circular chamber (401), the other end of which movably passes through the side end of the first rotating rod (402) and the inner wall of the electrical box body (1) and extends to the inner cavity of the electrical box body (1), and one end of the first rotating rod (402) extending to the inner cavity of the electrical box body (1) is connected to the nozzle (302); A first impeller (403) is fixedly mounted on a surface portion of the first rotating rod (402) located in an inner cavity of the first circular chamber (401), and an upper portion of the first impeller (403) extends into the conveying pipe (201).

4. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 3, characterized in that: The rotating mechanism (4) further comprises a second connecting pipe (404), two pulleys (405) and a belt (406); A second connecting pipe (404), wherein the first connecting pipe (301) is L-shaped, the second connecting pipe (404) is rotatably mounted on the first connecting pipe (301), and the spray head (302) is slidably mounted in the second connecting pipe (404); Two pulleys (405), the two pulleys (405) are fixedly mounted on the first rotating rod (402) and the second connecting pipe (404) respectively; A belt (406) is drivingly connected to the two pulleys (405).

5. The explosion-proof electrical box with a fire extinguishing mechanism according to claim 1, characterized in that: The conveying pipeline (201) comprises a first vertical section (2011), a first horizontal section (2012), two second horizontal sections (2013), two second vertical sections (2014), two third horizontal sections (2015) and a fourth horizontal section (2016) which are connected in sequence.

6. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 5, characterized in that: A plurality of the fire extinguishing mechanisms (3) and the rotating mechanisms (4) are provided, and the plurality of the fire extinguishing mechanisms (3) and the plurality of the rotating mechanisms (4) are linearly arranged on the two second horizontal sections (2013) and the two third horizontal sections (2015).

7. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 6, characterized in that: It also includes a reciprocating displacement mechanism (5), the reciprocating displacement mechanism (5) is used to drive the spray head (302) to slide back and forth to expand the spraying range, and the reciprocating displacement mechanism (5) includes a slide seat (501); A slide seat (501) is slidably mounted on the inner wall of the electrical box body (1), and a plurality of the nozzles (302) are rotatably connected to the slide seat (501).

8. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 7, characterized in that: The reciprocating shifting mechanism (5) further comprises a second rotating rod (502), a rotating disk (503), a connecting shaft (504), a transmission rod (505) and a hinge shaft (506); A second rotating rod (502), the second rotating rod (502) being rotatably mounted on the inner wall of the electrical box body (1); A rotating disk (503), the rotating disk (503) being fixedly mounted on one end of the second rotating rod (502) extending to the inner cavity of the electrical box body (1), and the rotating disk (503) and the second rotating rod (502) being coaxially arranged; A connecting shaft (504), the connecting shaft (504) being fixedly mounted on a side end of the rotating disk (503) that deviates from the center of the circle; A transmission rod (505), one end of which is rotatably mounted on the connecting shaft (504), and the other end of which is movably hinged to the lower end of the sliding seat (501) via a hinge shaft (506).

9. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 8, characterized in that: The reciprocating displacement mechanism (5) further comprises a second circular chamber (507) and a second impeller (508); A second circular chamber (507), wherein the second circular chamber (507) is on the first horizontal section (2012), and the inner cavity of the second circular chamber (507) is connected to the inner cavity of the delivery pipe (201), and one end of the second rotating rod (502) is rotatably connected to the inner wall of the second circular chamber (507); The second impeller (508) is fixedly mounted on the surface portion of the second rotating rod (502) located in the inner cavity of the first circular chamber (401), and the upper portion of the second impeller (508) extends into the first horizontal section (2012).

10. An explosion-proof electrical box with a fire extinguishing mechanism according to claim 5, characterized in that: A fire alarm (6) and a pressure relief valve (7) are also installed in the electrical box body (1); a solenoid valve (202) is installed in the first vertical section (2011); the fire alarm (6) is used to monitor the fire situation in the electrical box body (1); the fire alarm (6) is electrically connected to the solenoid valve (202); and the pressure relief valve (7) is used to control the air pressure in the electrical box body (1).

Images