Fire-fighting smoke exhaust fan

Abstract

The utility model discloses a fire-fighting smoke exhaust fan which comprises a smoke exhaust fan barrel, an air inlet grille and a fixing rod, a water tank is arranged on the side, away from the air inlet grille, of a protective cover, the bottom end of one side of the water tank is communicated with a guide pipe, and the end, away from a water pump, of the guide pipe penetrates through the smoke exhaust fan barrel to be connected with an atomization spray head. The outer wall of the middle of the screw is in threaded connection with a moving block, the top end of the moving block is connected with a connecting rod, the end, away from the moving block, of the connecting rod penetrates through the limiting groove to be connected with a heterocyclic scraping ring, the outer wall of the heterocyclic scraping ring is attached to the inner wall of the smoke exhaust fan barrel, and a filter plate is embedded in the side, close to the air outlet grating, of the smoke exhaust fan barrel. The positive and negative motors are adopted to drive the heterocyclic scraping ring to scrape impurities such as dust on the inner wall of the smoke exhaust fan barrel, the situation that normal use is affected due to excessive accumulation of the impurities is avoided, water mist atomized through the atomization nozzle is sprayed into the smoke exhaust fan barrel, and therefore harmful impurity particles in smoke are settled, and the smoke exhaust effect is improved. And pollution of harmful impurity particles to the surrounding environment is reduced through filtration of the filter plate.

Description

Technical Field

[0001] The utility model relates to the technical field of fire smoke exhaust fans, in particular to a fire smoke exhaust fan. Background Art

[0002] A fire-fighting fan refers to an industrial fan that can work for a long time in a high-temperature environment. It is mainly used to discharge high-temperature smoke in a building when a fire occurs, so as to facilitate people to escape. The application number CN201911258488.7 has been retrieved. It is a fire-fighting smoke exhaust fan. The motor is isolated from the high-temperature air passing through the smoke exhaust fan by an insulating cavity. The insulating cavity is directly connected to the external environment. The outer surface of the motor is directly in contact with the outside air for heat dissipation. At the same time, the motor introduces the outside air into the motor through its own cooling fan for heat dissipation. The two work together to dissipate the heat of the motor. An insulation device is used on the outside of the hub to prevent the hub from direct contact with the high-temperature air, thereby ensuring that the temperature of the motor spindle will not be too high.

[0003] Similar to the above-mentioned fire smoke exhaust fan: Although a heat insulation device is used to prevent the hub from direct contact with high-temperature air and ensure that the temperature of the motor shaft will not be too high, firstly, after it is connected to the smoke exhaust duct, the dust in the smoke is easy to accumulate inside the fan duct. After long-term use, excessive accumulation can easily affect normal use. Secondly, it is impossible to settle and filter the harmful impurity particles in the smoke, and direct discharge can easily affect the external environment.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a fire smoke exhaust fan is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a fire smoke exhaust fan to solve the problem proposed in the above-mentioned background technology that, firstly, after the fire smoke exhaust fan is connected to the smoke exhaust pipe, dust in the smoke is easily accumulated inside the fan duct, and excessive accumulation after long-term use may easily affect normal use; secondly, it is unable to settle and filter harmful impurity particles in the smoke, and directly discharges it, which may easily affect the external environment.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fire smoke exhaust fan, comprising a smoke exhaust fan barrel, an air intake grille and a fixing rod, wherein an air intake grille is arranged at one edge of the side of the smoke exhaust fan barrel, an air outlet grille is arranged on the side of the smoke exhaust fan barrel away from the air intake grille, the fixing rod is arranged on the top inner wall of the smoke exhaust fan barrel, and a fixing ring is welded at one end of the fixing rod away from the inner wall of the smoke exhaust fan barrel.

[0007] Furthermore, the inner wall of the fixed ring is connected to a rotating shaft via a bearing, the outer walls at both ends of the rotating shaft are sleeved with rotating impellers, the blades of the two groups of rotating impellers are staggered, and a No. 1 transmission gear is sleeved in the middle of the rotating shaft.

[0008] Furthermore, a servo motor is connected to one side of the top of the smoke exhaust fan barrel through a fixing bolt, a No. 2 transmission gear is sleeved on the outer wall of the output shaft of the servo motor, the No. 2 transmission gear is connected to the No. 1 transmission gear through a transmission belt, and a protective cover is sleeved on the outside of the servo motor.

[0009] Furthermore, a water tank is arranged on the side of the protective cover away from the air intake grille, a conduit is connected to the bottom end of one side of the water tank, a water pump is arranged in the middle of the conduit, and an end of the conduit away from the water pump passes through the smoke exhaust fan barrel and is connected to an atomizing nozzle.

[0010] Furthermore, the bottom of the smoke exhaust fan barrel is connected to a drive box via a fixing bolt, the inner cavity of the drive box is connected to a screw via a bearing, a moving block is threadedly connected to the middle outer wall of the screw, one side of the drive box is connected to a forward and reverse motor, and the output end of the forward and reverse motor is connected to the screw.

[0011] Furthermore, a limiting groove is provided on the side of the smoke exhaust fan barrel close to the driving box, the top of the moving block is connected to a connecting rod, the end of the connecting rod away from the moving block passes through the limiting groove and is connected to a scraper ring, the outer wall of the scraper ring is close to the inner wall of the smoke exhaust fan barrel, a filter plate is embedded on the side of the smoke exhaust fan barrel close to the air outlet grille, a handle is connected to the top of the filter plate, and a backup power supply is provided at the bottom of the driving box.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a fire smoke exhaust fan, which uses a forward and reverse motor to drive the scraping ring to move horizontally to scrape off dust and other impurities on the inner wall of the smoke exhaust fan cylinder, avoiding excessive accumulation of impurities affecting normal use, and spraying the water mist atomized by the atomizing nozzle into the smoke exhaust fan cylinder, thereby settling the harmful impurity particles in the smoke, and filtering through the filter plate to reduce the pollution caused by the harmful impurity particles to the surrounding environment. The specific contents are as follows:

[0013] The bottom of the smoke exhaust fan barrel is connected to a drive box by a fixing bolt, the inner cavity of the drive box is connected to a screw by a bearing, the middle outer wall of the screw is threadedly connected to a moving block, one side of the drive box is connected to a forward and reverse motor, the output end of the forward and reverse motor is connected to the screw, the forward and reverse motor can drive the screw to rotate, thereby driving the moving block to move horizontally, the top of the moving block is connected to a connecting rod, the movement of the moving block drives the connecting rod to move, the end of the connecting rod away from the moving block passes through the limiting groove and is connected to a scraper ring, a notch is provided on the top of the scraper ring through which the fixing rod and the conduit can be passed, the outer wall of the scraper ring is close to the inner wall of the smoke exhaust fan barrel, the scraper ring can scrape off dust and other impurities on the inner wall of the smoke exhaust fan barrel to avoid excessive accumulation Affecting normal use, a water tank is arranged on the side of the protective cover away from the air intake grille, and a water inlet is arranged on the top of the water tank. The water tank can store cooling water. A conduit is connected to the bottom of one side of the water tank, and the conduit plays a connecting role. A water pump is arranged in the middle of the conduit, and the end of the conduit away from the water pump passes through the smoke exhaust fan barrel and is connected to an atomizing nozzle. The water pump draws the cooling water in the water tank into the atomizing nozzle through the conduit, and the water mist atomized by the atomizing nozzle is sprayed into the smoke exhaust fan barrel. The water spray will settle and filter the harmful impurity particles in the smoke, and a filter plate is embedded with a side of the smoke exhaust fan barrel close to the air outlet grille. The filter plate can filter out large particles and residues contained in the smoke, thereby reducing the pollution of harmful impurity particles to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural schematic diagram of a fire smoke exhaust fan of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of a fire smoke exhaust fan of the utility model;

[0016] Figure 3 This is a schematic diagram of a scraping ring structure of a fire smoke exhaust fan of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the rotating impeller structure of a fire smoke exhaust fan.

[0018] In the figure: 1. Smoke exhaust fan barrel; 2. Air inlet grille; 3. Air outlet grille; 4. Fixed rod; 5. Fixed ring; 6. Rotating shaft; 7. Rotating impeller; 8. No. 1 transmission gear; 9. Servo motor; 10. No. 2 transmission gear; 11. Transmission belt; 12. Protective cover; 13. Water tank; 14. Conduit; 15. Water pump; 16. Atomizing nozzle; 17. Drive box; 18. Screw; 19. Moving block; 20. Forward and reverse motor; 21. Limiting groove; 22. Connecting rod; 23. Scraping ring; 24. Filter plate; 25. Handle; 26. Backup power supply. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a fire smoke exhaust fan, comprising a smoke exhaust fan barrel 1, an air intake grille 2 and a fixing rod 4. An air intake grille 2 is arranged at one edge of the smoke exhaust fan barrel 1, and an air outlet grille 3 is arranged on the side of the smoke exhaust fan barrel 1 away from the air intake grille 2. The air intake grille 2 and the air outlet grille 3 both play a protective role. At the same time, the surface is hollowed out to facilitate air entry. The fixing rod 4 is arranged on the top inner wall of the smoke exhaust fan barrel 1, and the fixing rod 4 plays a fixing role. A fixing ring 5 is welded on one end of the fixing rod 4 away from the inner wall of the smoke exhaust fan barrel 1, and the fixing ring 5 plays a role of limiting and fixing the rotating shaft 6.

[0021] The inner wall of the fixed ring 5 is connected to a rotating shaft 6 through a bearing. The rotating shaft 6 can rotate in the fixed ring 5. The outer walls of both ends of the rotating shaft 6 are sleeved with rotating impellers 7. The blades of the two sets of rotating impellers 7 are staggered. The rotation of the rotating shaft 6 can drive the rotating impellers 7 to rotate, thereby realizing the smoke exhaust effect on the pipeline. The staggered arrangement of the blades of the two sets of rotating impellers 7 improves the exhaust wind force. The middle part of the rotating shaft 6 is sleeved with a No. 1 transmission gear 8, which drives the rotating shaft 6 to rotate.

[0022] A servo motor 9 is connected to one side of the top of the smoke exhaust fan barrel 1 through a fixing bolt. The servo motor 9 is arranged on the top of the smoke exhaust fan barrel 1 to prevent the internal temperature of the smoke exhaust fan from being too high during the smoke exhaust process, causing damage to the motor. A No. 2 transmission gear 10 is sleeved on the outer wall of the output shaft of the servo motor 9. The No. 2 transmission gear 10 can be driven to rotate by the servo motor 9. The No. 2 transmission gear 10 is connected to the No. 1 transmission gear 8 by a transmission belt 11. The No. 2 transmission gear 10 drives the No. 1 transmission gear 8 to rotate synchronously through the transmission belt 11. The rotation of the No. 1 transmission gear 8 drives the rotating shaft 6 to rotate, thereby driving the rotating impeller 7 to rotate, thereby realizing the smoke exhaust effect on the pipeline. A protective cover 12 is sleeved on the outside of the servo motor 9. The protective cover 12 plays a role in protecting the servo motor 9 and the No. 2 transmission gear 10.

[0023] A water tank 13 is provided on the side of the protective cover 12 away from the air intake grille 2. A water inlet is provided on the top of the water tank 13. The water tank 13 can store cooling water. A conduit 14 is connected to the bottom of one side of the water tank 13. The conduit 14 plays a connecting role. A water pump 15 is provided in the middle of the conduit 14. One end of the conduit 14 away from the water pump 15 passes through the smoke exhaust fan barrel 1 and is connected to an atomizing nozzle 16. The water pump 15 pumps the cooling water in the water tank 13 into the atomizing nozzle 16 through the conduit 14, and the water mist atomized by the atomizing nozzle 16 is sprayed into the smoke exhaust fan barrel 1. The water is sprayed to settle and filter harmful impurity particles in the smoke. The smoke after the harmful impurity particles are settled and filtered is then discharged to the outside by the rotating impeller 7. In this way, the harmful impurity particles in the smoke can be prevented from being discharged to affect the surrounding environment, thereby protecting the surrounding environment. At the same time, the inside of the smoke exhaust fan barrel 1 can be cleaned and cooled to a certain extent to avoid excessive temperature inside the smoke exhaust fan barrel 1.

[0024] The bottom of the smoke exhaust fan barrel 1 is connected to a drive box 17 through a fixing bolt. The drive box 17 plays a fixing role. The inner cavity of the drive box 17 is connected to a screw 18 through a bearing. The screw 18 can rotate in the drive box 17. The middle outer wall of the screw 18 is threadedly connected to a moving block 19. The rotation of the screw 18 drives the moving block 19 to move horizontally. A forward and reverse motor 20 is connected to one side of the drive box 17. The output end of the forward and reverse motor 20 is connected to the screw 18. The forward and reverse motor 20 can drive the screw 18 to rotate, thereby driving the moving block 19 to move horizontally.

[0025] A limiting groove 21 is provided on one side of the smoke exhaust fan barrel 1 close to the driving box 17, and the limiting groove 21 plays a limiting role. A connecting rod 22 is connected to the top of the moving block 19, and the movement of the moving block 19 drives the connecting rod 22 to move. The end of the connecting rod 22 away from the moving block 19 passes through the limiting groove 21 and is connected to a scraping ring 23. A notch is provided on the top of the scraping ring 23 through which the fixed rod 4 and the conduit 14 can pass. The outer wall of the scraping ring 23 is close to the inner wall of the smoke exhaust fan barrel 1, and the scraping ring 23 can scrape off impurities such as dust on the inner wall of the smoke exhaust fan barrel 1 to avoid excessive accumulation. Affecting normal use, a filter plate 24 is embedded on one side of the smoke exhaust fan barrel 1 close to the air outlet grille 3, and the filter plate 24 can filter out large particles and residues contained in the smoke to reduce the pollution of harmful impurity particles to the surrounding environment. A handle 25 is connected to the top of the filter plate 24, and the filter plate 24 can be taken out by pulling the handle 25, which is convenient for daily cleaning and maintenance of the filter plate 24. A backup power supply 26 is provided at the bottom of the drive box 17, and the backup power supply 26 can be used as an emergency power supply in a power outage environment to keep the fire smoke exhaust fan able to operate normally.

[0026] Working principle: When using a fire smoke exhaust fan, fix the smoke exhaust fan barrel at the required position, the air inlet grille 2 and the air outlet grille 3 both play a protective role, and the surface is hollowed out to facilitate air entry. The servo motor 9 is arranged on the top of the smoke exhaust fan barrel 1 to prevent the internal temperature of the smoke exhaust fan from being too high during the smoke exhaust process, causing damage to the motor. The servo motor 9 can drive the No. 2 transmission gear 10 to rotate, and the No. 2 transmission gear 10 is connected to the No. 1 transmission gear 8 through a transmission belt 11. The No. 2 transmission gear 10 drives the No. 1 transmission gear 8 to rotate synchronously through the transmission belt 11. The rotation of the No. 1 transmission gear 8 drives the rotating shaft 6 to rotate, thereby driving the rotating impeller 7 to rotate, thereby realizing the smoke exhaust effect on the pipeline. The water pump 15 draws the cooling water in the water tank 13 into the atomizing nozzle 16 through the conduit 14, and the water mist atomized by the atomizing nozzle 16 is sprayed into the smoke exhaust fan barrel 1, and the water sprays out to settle and filter the harmful impurity particles in the smoke. The smoke after settling and filtering the harmful impurity particles is then discharged to the outside by the rotating impeller 7. In this way, it can prevent The exhaust fan 1 is provided with a plurality of cleaning plates 24, and the plurality of cleaning plates 24 are provided with a plurality of cleaning plates 26. The plurality of cleaning plates 26 are provided with a plurality of cleaning plates 27. The plurality of cleaning plates 27 are provided with a plurality of cleaning plates 28. The plurality of cleaning plates 28 are provided with a plurality of cleaning plates 29. The plurality of cleaning plates 29 are provided with a plurality of cleaning plates 29.

[0027] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fire smoke exhaust fan, comprising a smoke exhaust fan cylinder (1), an air intake grille (2) and a fixing rod (4), characterized in that: An air inlet grille (2) is arranged at one side edge of the smoke exhaust fan barrel (1), an air outlet grille (3) is arranged at a side of the smoke exhaust fan barrel (1) away from the air inlet grille (2), the fixing rod (4) is arranged on the top inner wall of the smoke exhaust fan barrel (1), and a fixing ring (5) is welded to one end of the fixing rod (4) away from the inner wall of the smoke exhaust fan barrel (1).

2. A fire smoke exhaust fan according to claim 1, characterized in that: The inner wall of the fixed ring (5) is connected to a rotating shaft (6) via a bearing, and rotating impellers (7) are sleeved on the outer walls at both ends of the rotating shaft (6), and the blades of the two sets of rotating impellers (7) are arranged in a staggered manner. A first transmission gear (8) is sleeved on the middle part of the rotating shaft (6).

3. A fire smoke exhaust fan according to claim 2, characterized in that: A servo motor (9) is connected to one side of the top of the smoke exhaust fan barrel (1) via a fixing bolt, a second transmission gear (10) is sleeved on the outer wall of the output shaft of the servo motor (9), the second transmission gear (10) is connected to the first transmission gear (8) via a transmission belt (11), and a protective cover (12) is sleeved on the outside of the servo motor (9).

4. A fire smoke exhaust fan according to claim 3, characterized in that: A water tank (13) is provided on a side of the protective cover (12) away from the air intake grille (2); a duct (14) is connected to a bottom end of one side of the water tank (13); a water pump (15) is provided in the middle of the duct (14); and an end of the duct (14) away from the water pump (15) passes through a smoke exhaust fan cylinder (1) and is connected to an atomizing nozzle (16).

5. The fire smoke exhaust fan according to claim 1, characterized in that: The bottom of the smoke exhaust fan barrel (1) is connected to a drive box (17) via a fixing bolt, the inner cavity of the drive box (17) is connected to a screw rod (18) via a bearing, the middle outer wall of the screw rod (18) is threadedly connected to a moving block (19), one side of the drive box (17) is connected to a forward and reverse motor (20), and the output end of the forward and reverse motor (20) is connected to the screw rod (18).

6. A fire smoke exhaust fan according to claim 5, characterized in that: A limiting groove (21) is provided on a side of the smoke exhaust fan barrel (1) close to the drive box (17); a connecting rod (22) is connected to the top of the moving block (19); an end of the connecting rod (22) away from the moving block (19) passes through the limiting groove (21) and is connected to a scraping ring (23); an outer wall of the scraping ring (23) is close to an inner wall of the smoke exhaust fan barrel (1); a filter plate (24) is embedded on a side of the smoke exhaust fan barrel (1) close to the air outlet grille (3); a handle (25) is connected to the top of the filter plate (24); and a backup power supply (26) is provided at the bottom of the drive box (17).

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