Explosion-proof centrifugal fire-fighting smoke exhaust fan

Abstract

The utility model discloses an anti-explosion centrifugal fire-fighting smoke exhaust fan, and relates to the technical field of smoke exhaust fans. An impeller is installed in the smoke exhaust fan body, a motor and a water tank are arranged on the top of the smoke exhaust fan body, a submersible pump is arranged in the water tank, the water outlet end of the submersible pump is connected with a conveying pipe, one end of the conveying pipe is connected with a spraying pipe, and the outer surface of the spraying pipe is connected with an atomizing nozzle. By arranging the atomizing spray head and the baffle plate, high-temperature gas is cooled and dedusted through water mist atomized by the atomizing spray head, the high-temperature gas is prevented from being discharged out of the fan to cause harm to nearby personnel, meanwhile, smoke dust mixed in air is adsorbed through the water mist, the water mist and the smoke dust are intercepted through the baffle plate, and the smoke dust is prevented from being discharged out of the fan. Smoke dust and water mist are prevented from being adsorbed on the surfaces of the volute, the impeller and other structures, the probability that the volute, the impeller and other structures are eroded is reduced, and therefore the service life of the fan is prolonged, and meanwhile the follow-up maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust fans, in particular to an explosion-proof centrifugal fire-fighting smoke exhaust fan. Background Art

[0002] Centrifugal fire smoke exhaust fan is a very important equipment. Its main components include impeller, motor, casing, etc. Its main function is to exhaust smoke out of the building through smoke exhaust when a fire occurs, ensuring the safety of personnel and the integrity of the building.

[0003] During the exhaust process of existing centrifugal fire smoke exhaust fans, the high-temperature air generated by combustion carries a large amount of smoke and dust into the smoke exhaust fan. The smoke and dust will be adsorbed inside the fan, and the smoke ash will corrode structures such as the impeller, affecting the service life of the fan. The subsequent cleaning of the inside of the smoke exhaust fan will also be time-consuming and laborious. At the same time, if the high-temperature air is discharged directly, it may cause burns to people taking shelter near the smoke exhaust fan. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide an explosion-proof centrifugal fire smoke exhaust fan to solve the technical problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an explosion-proof centrifugal fire smoke exhaust fan, comprising a base and a smoke exhaust fan body, an impeller installed inside the smoke exhaust fan body, a motor and a water tank provided on the top of the smoke exhaust fan body, a semiconductor refrigeration plate provided on the top of the water tank, a submersible pump provided inside the water tank, the water outlet end of the submersible pump is connected to a delivery pipe, one end of the delivery pipe is connected to a nozzle, an atomizing nozzle is connected to the outer surface of the nozzle, an air inlet and an air outlet are respectively provided on both sides of the smoke exhaust fan body, a baffle is connected to the inside of the air inlet, a collecting box is provided at the bottom of the air inlet, a filter is connected to one side of the collecting box, a connecting pipe is connected to the back of the collecting box, and one end of the connecting pipe is connected to the water tank.

[0006] Furthermore, the baffles are provided in plurality and are distributed at equal intervals.

[0007] By adopting the above technical solution, when a fire occurs, the motor, submersible pump and semiconductor refrigeration plate are started under the control of the fire protection system processor. The output end of the motor drives the impeller to rotate through a belt. The smoke inside the building is drawn out of the building by the impeller. Driven by the output end of the submersible pump, the water in the water tank is transported to the nozzle through the delivery pipe, and atomized by the atomizing nozzle. The high-temperature smoke is cooled by the water mist to prevent the high-temperature smoke from being discharged outside the fan and causing harm to nearby personnel. At the same time, the smoke and dust mixed in the air are adsorbed by the water mist, and the flow length of the smoke in the air inlet is extended by the baffle, and the contact time between the water mist and the smoke is extended, thereby improving the cooling effect and dust removal effect of the water mist on the smoke. At the same time, the water mist and smoke are intercepted by the baffle to prevent the smoke and dust and water mist from entering the fan and being adsorbed on the surface of the volute, impeller and other structures, causing erosion to the volute, impeller and other structures.

[0008] Furthermore, the cross section of the bottom of the air inlet is inclined.

[0009] By adopting the above technical solution and setting it up obliquely, the water flow can drive the sludge to concentrate on the side of the air inlet, and then enter the collection box through the gap for concentration, and the water and sludge of the sewage are separated through the collection box.

[0010] Furthermore, there are multiple semiconductor refrigeration plates, and the multiple semiconductor refrigeration plates are staggered.

[0011] By adopting the above technical solution, the semiconductor refrigeration plate is electrically connected to the fire protection system controller. Under the pumping end of the submersible pump, the water filtered by the filter flows back to the water tank through the connecting pipe, and the water is cooled by the semiconductor refrigeration plate. The cooled water continues to cool and remove dust from the flue gas, avoiding the waste of water resources. By staggering the semiconductor refrigeration plates, the flow distance of water between the semiconductor refrigeration plates is extended, thereby improving the cooling effect.

[0012] Furthermore, a scraper is connected to the collection box via a fixing bar, and the scraper is slidably connected to the collection box and the filter screen respectively.

[0013] By adopting the above technical solution, driven by the suction of the submersible pump, the sewage enters the collection box, is filtered through the filter screen, and the sludge is deposited in the collection box. The filtered water flows back to the water tank through the connecting pipe for reuse, thus avoiding waste of water resources.

[0014] Furthermore, the main casing of the smoke exhaust fan is made of galvanized steel plate.

[0015] By adopting the above technical solution, the volute, impeller and other structures are wrapped inside the shell through the outer shell. When the impeller is damaged, the outer shell can block and buffer the impeller fragments to prevent the fragments from flying out directly. At the same time, the galvanized layer also has good corrosion resistance, protecting the steel plate from corrosion, thereby extending the service life of the fan.

[0016] Furthermore, one side of the air outlet is connected to an air collecting hood, one side of the air collecting hood is connected to a connecting pipe, and one side of the top of the base is provided with a processing box.

[0017] By adopting the above technical solution, the cooled air is collected into the connecting pipe through the air collecting hood and transported to the treatment box through the connecting pipe. The treatment box is filled with an alkaline solution, and the alkaline solution is used to neutralize harmful gases such as hydrogen cyanide and hydrogen sulfide mixed in the air, thereby avoiding direct discharge of harmful gases and pollution to the surrounding air.

[0018] Furthermore, the cross section of the connecting pipe is in a "Z" shape, and one end of the connecting pipe is connected to the processing box.

[0019] By adopting the above technical solution, the air at the air outlet is guided into the lower part of the treatment box through the connecting pipe, thereby extending the rising distance of the harmful gas in the alkaline solution, thereby extending the reaction time between the harmful gases in the alkaline solution, and making the neutralization more thorough.

[0020] Furthermore, an activated carbon layer is connected to the interior of the treatment box via a perforated plate.

[0021] By adopting the above technical solution, the air is filtered through activated carbon, and other non-reactive substances in the air are adsorbed, thereby further improving the safety of the air.

[0022] Furthermore, a movable door is provided on the back of the collection box, and fixing bars are connected to both sides of the outer surface of the movable door, and one end of the fixing bar is connected to the scraper.

[0023] By adopting the above technical solution, when cleaning the sludge inside the collection box, the staff pulls the handle to open the movable door on the back of the collection box. Driven by the fixed bar, the scraper brings the sludge out of the collection box to prevent the sludge in the collection box from accumulating and clogging the filter.

[0024] In summary, the present invention has the following beneficial effects:

[0025] The utility model is provided with an atomizing nozzle and a baffle. When a fire occurs, the motor, the submersible pump and the semiconductor refrigeration plate are started under the control of the fire protection system processor. The output end of the motor drives the impeller to rotate through a belt, and the smoke inside the building is drawn out of the building under the drive of the impeller. Driven by the output end of the submersible pump, the water in the water tank is transported to the nozzle through the delivery pipe, and is atomized by the atomizing nozzle. The high-temperature smoke is cooled by the water mist, so as to prevent the high-temperature smoke from being discharged to the outside of the fan and causing harm to nearby refugees. At the same time, the smoke dust mixed in the air is adsorbed by the water mist, and the flow length of the smoke in the air inlet is extended by the baffle, and the contact time of the water mist and the smoke is prolonged, thereby improving the cooling effect and dust removal effect of the water mist on the smoke. At the same time, the water mist and the smoke are intercepted by the baffle, so as to prevent the smoke dust and water mist from entering the fan and being adsorbed on the surface of the volute, impeller and other structures, thereby reducing the probability of erosion of the volute, impeller and other structures, thereby extending the service life of the fan and reducing the difficulty of subsequent maintenance.

[0026] 2. The utility model is provided with a collection box and a filter screen. Driven by the suction of the submersible pump, the sewage is collected through the collection box and filtered through the filter screen to separate the water and sludge. The separated water flows back to the inside of the water tank through the connecting pipe, and the water is recycled to avoid water resource waste.

[0027] 3. The utility model is provided with semiconductor refrigeration plates, and the return water is cooled by the semiconductor refrigeration plates. By staggering the semiconductor refrigeration plates, the flow distance of the water between the semiconductor refrigeration plates is extended, thereby improving the cooling effect. The cold water returns to the air inlet under the action of the submersible pump, thereby further improving the cooling effect on the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 This is a schematic diagram of the back structure of the collection box of the present utility model;

[0030] Figure 3 This is a schematic diagram of the processing box structure of the utility model;

[0031] Figure 4 This is a schematic diagram of the cross-sectional structure of the air inlet of the present utility model;

[0032] Figure 5 This is a schematic diagram of the cross-sectional structure of the collection box of the present utility model.

[0033] In the figure: 1. Smoke exhaust fan body; 2. Motor; 3. Impeller; 4. Air inlet; 5. Air outlet; 6. Water tank; 7. Delivery pipe; 8. Nozzle; 9. Atomizing nozzle; 10. Baffle; 11. Collection box; 12. Filter; 13. Scraper; 14. Connecting pipe; 15. Semiconductor cooling plate; 16. Wind collecting hood; 17. Connecting pipe; 18. Treatment box; 19. Activated carbon layer; 20. Submersible pump; 21. Base; 22. Movable door; 23. Fixing strip. DETAILED DESCRIPTION

[0034] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] The following describes an embodiment of the present invention based on its overall structure.

[0036] Example 1: An explosion-proof centrifugal fire smoke exhaust fan, such as Figure 1-Figure 5 As shown, it includes a base 21 and a smoke exhaust fan body 1, an impeller 3 is installed inside the smoke exhaust fan body 1, a motor 2 and a water tank 6 are provided on the top of the smoke exhaust fan body 1, a semiconductor refrigeration plate 15 is provided on the top of the water tank 6, a submersible pump 20 is provided inside the water tank 6, the water outlet of the submersible pump 20 is connected to a delivery pipe 7, one end of the delivery pipe 7 is connected to a nozzle 8, and an atomizing nozzle 9 is connected to the outer surface of the nozzle 8. An air inlet 4 and an air outlet 5 are provided on both sides of the smoke exhaust fan body 1, and a baffle 10 is connected inside the air inlet 4. A collecting box 11 is provided on the inside, a filter screen 12 is connected to one side of the collecting box 11, a connecting pipe 14 is connected to the back of the collecting box 11, and one end of the connecting pipe 14 is connected to the water tank 6. The outer shell of the smoke exhaust fan body 1 is made of galvanized steel plate, and the volute, impeller 3 and other structures are wrapped inside the shell through the outer shell. When the impeller 3 is damaged, the outer shell can block and buffer the fragments of the impeller 3 to prevent the fragments from flying out directly. At the same time, the galvanized layer also has good corrosion resistance, which protects the steel plate from corrosion, thereby extending the service life of the fan.

[0037] See Figure 2 、 Figure 4 and Figure 5In the above embodiment, a plurality of baffles 10 are provided, and the baffles 10 are evenly spaced. When a fire occurs, the motor 2, the submersible pump 20, and the semiconductor refrigeration plate 15 are started under the control of the fire protection system processor. The output end of the motor 2 drives the impeller 3 to rotate through a belt. The impeller 3 drives the smoke inside the building out of the building. Driven by the output end of the submersible pump 20, the water in the water tank 6 is transported to the nozzle 8 through the delivery pipe 7 and atomized by the atomizing nozzle 9. The water mist is used to vent the high-temperature smoke. Cooling, preventing high-temperature flue gas from being discharged outside the fan and causing harm to nearby personnel, while at the same time adsorbing smoke and dust mixed in the air through water mist, extending the flow length of the flue gas in the air inlet 4 through the deflector 10, and extending the contact time between the water mist and the flue gas, thereby enhancing the cooling effect and dust removal effect of the water mist on the flue gas, and at the same time intercepting the water mist and smoke through the deflector 10, preventing smoke and water mist from entering the interior of the fan and being adsorbed on the surface of the volute, impeller 3 and other structures, causing erosion to the volute, impeller 3 and other structures.

[0038] See Figure 4 and Figure 5 In the above embodiment, the cross-section of the bottom of the air inlet 4 is inclined. The inclined setting makes it easier for the water flow to drive the sludge to concentrate on one side of the air inlet 4, so that it enters the collection box 11 through the notch for concentration, and the sewage is separated into water and mud through the collection box 11.

[0039] See Figure 1-Figure 5 In the above embodiment, a plurality of semiconductor refrigeration sheets 15 are provided, and the plurality of semiconductor refrigeration sheets 15 are staggered. The semiconductor refrigeration sheets 15 are electrically connected to the fire protection system controller. When the submersible pump 20 is pumped at the water end, the water filtered by the filter screen 12 flows back to the water tank 6 through the connecting pipe 14. The water is cooled by the semiconductor refrigeration sheets 15, and the cooled water continues to cool and remove dust from the flue gas, thereby avoiding wasting water resources. By staggering the semiconductor refrigeration sheets 15, the flow distance of the water between the semiconductor refrigeration sheets 15 is extended, thereby improving the cooling effect.

[0040] See Figure 4 and Figure 5 In the above embodiment, a scraper 13 is connected to the collection box 11 through a fixed bar, and the scraper 13 is slidably connected to the collection box 11 and the filter screen 12 respectively. Driven by the suction force of the submersible pump 20, after the sewage enters the collection box 11, the sewage is filtered by the filter screen 12, and the sludge is precipitated in the collection box 11. The filtered water flows back to the water tank 6 through the connecting pipe 14 for reuse, thereby avoiding waste of water resources.

[0041] See Figure 2 and Figure 4In the above embodiment, a movable door 22 is provided on the back of the collection box 11, and fixed bars 23 are connected to both sides of the outer surface of the movable door 22, and one end of the fixed bar 23 is connected to the scraper 13. When cleaning the sludge inside the collection box 11, the staff pulls the handle to open the movable door 22 on the back of the collection box 11. Driven by the fixed bar 23, the scraper 13 brings the sludge out of the collection box 11 to prevent the sludge in the collection box 11 from accumulating and clogging the filter 12.

[0042] Example 2: In order to prevent harmful gases from being directly discharged into the air, Example 2 is improved on the basis of Example 1. Figure 3 、 Figure 4 and Figure 5 One side of the air outlet 5 is connected to an air collecting hood 16, and one side of the air collecting hood 16 is connected to a connecting pipe 17. A processing box 18 is provided on one side of the top of the base 21. The cooled air is collected into the connecting pipe through the air collecting hood 16 and transported to the processing box 18 through the connecting pipe. The processing box 18 is filled with an alkaline solution, and the alkaline solution is used to neutralize harmful gases such as hydrogen cyanide and hydrogen sulfide mixed in the air to avoid direct discharge of harmful gases and pollution to the surrounding air.

[0043] See Figure 3 、 Figure 4 and Figure 5 In the above embodiment, the cross-section of the connecting pipe 17 is "Z"-shaped, and one end of the connecting pipe 17 is connected to the processing box 18. The air at the air outlet 5 is guided into the lower part of the processing box 18 through the connecting pipe 17, thereby extending the rising distance of the harmful gas in the alkaline solution, thereby extending the reaction time between the harmful gas in the alkaline solution, and making the neutralization more thorough.

[0044] See Figure 3 、 Figure 4 and Figure 5 In the above embodiment, the inside of the processing box 18 is connected to an activated carbon layer 19 through a punching plate. The activated carbon filters the air and adsorbs other non-reactive substances in the air, further improving the safety of the air.

[0045] The implementation principle of the utility model is as follows: when a fire occurs, under the control of the fire protection system processor, the motor 2, the submersible pump 20 and the semiconductor refrigeration plate 15 are started, the output end of the motor 2 drives the impeller 3 to rotate through the belt, and the smoke and dust inside the building are extracted from the building under the drive of the impeller 3. When the smoke and dust enter the air inlet 4, the water in the water tank 6 is driven by the water outlet end of the submersible pump 20 to be transported to the nozzle 8 through the delivery pipe 7, and is atomized by the atomizing nozzle 9. The water mist is used to cool and remove dust from the smoke, and the generated sewage enters the collection box 11 from the notch on the side of the bottom of the air inlet 4. The sewage is separated into water and mud through the filter 12, and the separated water flows back to the water tank 6 through the connecting pipe 14. The return water is cooled by the semiconductor refrigeration plate 15. At the same time, the cooled and dust-removed air is guided by the deflector 10 into the smoke exhaust fan body 1, and finally discharged from the air outlet 5 on the other side of the smoke exhaust fan body 1; when the sludge in the collection box 11 needs to be processed, the staff pulls the handle to open the movable door on the back of the collection box 11. Driven by the fixed bar, the scraper 13 brings the sludge out of the collection box 11, thereby completing the cleaning.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An explosion-proof centrifugal fire smoke exhaust fan, comprising a base (21) and a smoke exhaust fan body (1), characterized in that: An impeller (3) is installed inside the smoke exhaust fan body (1), a motor (2) and a water tank (6) are provided on the top of the smoke exhaust fan body (1), a semiconductor refrigeration plate (15) is provided on the top of the water tank, a submersible pump (20) is provided inside the water tank (6), the water outlet of the submersible pump (20) is connected to a delivery pipe (7), one end of the delivery pipe (7) is connected to a nozzle (8), the outer surface of the nozzle (8) is connected to an atomizing nozzle (9), an air inlet (4) and an air outlet (5) are provided on both sides of the smoke exhaust fan body (1), a baffle (10) is connected inside the air inlet (4), a collecting box (11) is provided at the bottom of the air inlet (4), a filter screen (12) is connected to one side of the collecting box (11), a connecting pipe (14) is connected to the back of the collecting box (11), and one end of the connecting pipe (14) is connected to the water tank (6).

2. The explosion-proof centrifugal fire smoke exhaust fan according to claim 1, characterized in that: A plurality of baffles (10) are provided, and the baffles (10) are distributed at equal intervals.

3. The explosion-proof centrifugal fire smoke exhaust fan according to claim 1, characterized in that: The bottom cross section of the air inlet (4) is inclined.

4. The explosion-proof centrifugal fire smoke exhaust fan according to claim 1, characterized in that: A plurality of semiconductor refrigeration sheets (15) are provided, and the plurality of semiconductor refrigeration sheets (15) are staggeredly distributed.

5. The explosion-proof centrifugal fire smoke exhaust fan according to claim 1, characterized in that: A scraper (13) is connected to the collection box (11) via a fixing bar, and the scraper (13) is slidably connected to the collection box (11) and the filter screen (12) respectively.

6. The explosion-proof centrifugal fire smoke exhaust fan according to claim 1, characterized in that: The shell of the smoke exhaust fan body (1) is made of galvanized steel plate.

7. The explosion-proof centrifugal fire smoke exhaust fan according to claim 1, characterized in that: One side of the air outlet (5) is connected to an air collecting cover (16), one side of the air collecting cover (16) is connected to a connecting pipe (17), and one side of the top of the base (21) is provided with a processing box (18).

8. The explosion-proof centrifugal fire smoke exhaust fan according to claim 7, characterized in that: The cross section of the connecting pipe (17) is in a "Z" shape, and one end of the connecting pipe (17) is connected to the processing box (18).

9. The explosion-proof centrifugal fire smoke exhaust fan according to claim 7, characterized in that: The inside of the treatment box (18) is connected to an activated carbon layer (19) via a punching plate.

10. The explosion-proof centrifugal fire smoke exhaust fan according to claim 5, characterized in that: The back of the collecting box (11) is provided with a movable door (22), and both sides of the outer surface of the movable door (22) are connected with fixing strips (23), and one end of the fixing strip (23) is connected to the scraper (13).

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