CN116447175A - Centrifugal fan for industrial ventilation - Google Patents

Abstract

The invention discloses a centrifugal fan for industrial ventilation, which comprises a bottom plate, wherein a rack is fixedly arranged on one side of the top end of the bottom plate, a motor is fixedly arranged on the top end of the rack, a shell is arranged on the top end of one side of the bottom plate, which is far away from the rack, a connecting shaft is movably arranged at one end, which is close to the motor, of the shell through a bearing, one end, which is far away from the shell, of the connecting shaft is connected with an output shaft of the motor through a flange, and a transmission shaft is fixedly arranged at one end, which is far away from the flange, of the connecting shaft. When the filter plate in the fixed plate needs to be replaced, the holding handle is used for disassembling the corrugated pipe from the clamping groove through the two fixed plates, then the tool is used for rotating the bolt, the end head of the bolt is disassembled from the fixed plate, at the moment, the spring seats at four corners can drive the filter plate to quickly spring up, then the filter screen in the filter plate is cleaned or replaced and then is fixed in the fixed plate again, and then the two fixed plates are clamped into the clamping groove for fixation, so that the aim of conveniently and quickly replacing the filter assembly is achieved.

Description

A centrifugal fan for industrial ventilation

technical field

The invention relates to the field of centrifugal fans, in particular to a centrifugal fan used for industrial ventilation.

Background technique

Centrifugal fan is a driven fluid machine, which relies on input mechanical energy to increase gas pressure and discharge gas. Centrifugal fan is widely used in ventilation and dust removal of factories, mines, tunnels, cooling towers, vehicles, ships and buildings. and cooling, ventilation and drafting of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances, drying and selection of grain, etc.

For example, the authorized announcement number is a centrifugal fan disclosed in CN104033413B. Although it realizes that due to the above structure, the U-shaped shell plays an airflow guiding role, which reduces the turbulent flow of the airflow in the sharp corner of the box and avoids the air flow in the box. The interference of other components to the airflow improves the efficiency of the fan; because the U-shaped housing adopts a split structure, it is easy to disassemble and assemble, but it does not solve the existing industrial ventilation of the existing centrifugal fan, which needs to keep the ventilated air clean, so it is necessary The internal filter assembly is often replaced, and because the filter assembly is installed inside the ventilation pipeline, it is inconvenient to replace it. Therefore, we propose a centrifugal fan for industrial ventilation.

Contents of the invention

Purpose of the invention: the purpose of the present invention is to provide a centrifugal fan for industrial ventilation, to solve the problems raised in the above-mentioned background technology.

Technical solution: In order to achieve the above object, the present invention provides the following technical solution: a centrifugal fan for industrial ventilation, the centrifugal fan for industrial ventilation includes

Bottom plate, the top side of the bottom plate is fixedly installed with a frame, the top of the frame is fixedly mounted with a motor, the top side of the bottom plate is far away from the frame, and the top end of the bottom plate is away from the frame, and the end of the casing close to the motor moves through a bearing A connecting shaft is installed, the end of the connecting shaft far away from the casing is connected to the output shaft of the motor through a flange, the end of the connecting shaft far away from the flange is fixedly installed with a transmission shaft, and the middle part of the transmission shaft is fixedly installed with an impeller;

The air inlet, the air inlet is set at the end of the casing away from the motor, the inside of the air inlet is fixed with a fixed plate, the outside of the fixed plate is fixed with a number of screens, and the end of the transmission shaft away from the connecting shaft A number of fixing strips are fixedly installed through the fixing plate, and cleaning brushes are provided on the surface of the side of the fixing strips close to the retaining net;

A movable shell, the movable shell is movably installed on the top of the casing, both sides of the casing are movably installed with lead screws through bearings, the bottom ends of both sides of the movable casing are provided with threaded grooves, and the threaded grooves It is movably connected with the lead screw, and the top of the movable shell is fixedly connected with an air outlet;

The card slots are set in the top and bottom middle of the casing and the movable shell, and the insides of the two card slots are all snapped to the fixed plate, and a bellows is fixedly connected between the two fixed plates. The sides of each of the fixing plates away from the bellows are clamped with a filter plate, and a filter screen is fixedly installed in the middle of the filter plate.

Further, the four corners of the fixed plate away from the bellows are fixedly installed with spring seats, and the four corners of the filter plate are movably installed with bolts, and the bolts are screwed to the four corners of the fixed plate, and the top of the spring seat Vigorously connect with the filter plate through bolts.

Further, handles are fixedly installed on the outsides of both sides of the two fixing plates, and anti-slip sleeves are fixedly installed in the middle of the handles.

Further, guide rods are fixedly installed at the four corners of the top end of the housing, and guide grooves are provided at the four corners of the bottom end of the movable housing, and the guide grooves are movably connected with the guide rods.

Further, slide grooves are provided on both inner walls of the guide groove, sliders are fixedly installed on both sides of the top end of the guide rod, and the sliders are movably connected with the slide grooves.

Further, side grooves are opened on both sides of the casing close to the movable casing, and an adjusting button is fixedly installed at one end of the bottom end of the lead screw located inside the side groove.

Further, a first air duct is opened on the top of one side of the casing close to the movable shell, and a second air duct is opened in the middle of the bellows, and the first air duct, the second air duct and the air outlet are connected. .

Further, a base is provided at the bottom of the bottom plate, splints are fixedly installed on the top of the base and the bottom of the bottom plate, and a damping pad is arranged between the two splints.

Further, side plates are fixedly connected to the outer sides of the middle parts of both ends of the base, and several mounting holes are opened through the middle part of the side plates.

Further, the bottom plate and the base are flexibly connected by several fixing bolts.

Beneficial effect: compared with prior art, the beneficial effect of the present invention is:

1. In the present invention, when the filter plate in the fixed plate needs to be replaced, hold the handle to disassemble the bellows from the slot through the two fixed plates, and then use a tool to turn the bolt to disassemble the end of the bolt from the fixed plate. At this time, the spring seat at the four corners will drive the filter plate to bounce up quickly, then clean or replace the filter in the filter plate and then fix it in the fixed plate again, and then snap the two fixed plates into the slot to fix it, so as to achieve The purpose of facilitating quick replacement of filter components;

2. In the present invention, when the motor is running, the transmission shaft drives several fixed bars at the end to rotate synchronously, and when the several fixed bars rotate, they drive the inner cleaning brush to rub against the surface of the screen, so that the dust brought in during air circulation can be removed. Clean up to avoid dust covering the screen, which will affect the normal circulation of the air, so that manual dust removal can be avoided, and the dust removal components can be controlled by the motor, which also achieves the purpose of energy saving;

3. In the present invention, when the installation height of the air outlet needs to be adjusted, the adjusting knob is rotated at the same time. When the adjusting knob is rotated, the screw is driven to rotate synchronously. After the screw rotates, it rotates along the inside of the thread groove, and at the same time, the guide The rod and the guide groove cooperate with the guide, so that the movable shell can be controlled to rise and fall in a straight line, and then the height of the air outlet can be adjusted, which is convenient for the installation of ventilation pipes of different heights.

Description of drawings

Fig. 1 is a kind of overall front structural schematic diagram of the centrifugal fan that is used for industrial ventilation of the present invention;

Fig. 2 is a schematic sectional structure diagram of a casing of a centrifugal fan for industrial ventilation of the present invention;

Fig. 3 is a schematic structural view of a guide rod of a centrifugal fan for industrial ventilation according to the present invention;

Fig. 4 is an enlarged schematic view of A in Fig. 1 of a centrifugal fan for industrial ventilation of the present invention;

Fig. 5 is an enlarged schematic diagram of the B place in Fig. 1 of a kind of centrifugal fan for industrial ventilation of the present invention;

Fig. 6 is an enlarged schematic view of C in Fig. 1 of a centrifugal fan for industrial ventilation of the present invention;

Fig. 7 is an enlarged schematic view of the D place in Fig. 1 of a centrifugal fan for industrial ventilation of the present invention;

Fig. 8 is an enlarged schematic diagram of a centrifugal fan used for industrial ventilation in Fig. 3 according to the present invention.

In the figure: 1, bottom plate; 2, frame; 3, motor; 4, casing; 5, connecting shaft; 6, flange; 7, drive shaft; 8, impeller; 9, air inlet; 10, fixed plate; 11. Blocking net; 12. Fixed bar; 13. Cleaning brush; 14. Movable shell; 15. Lead screw; 16. Thread groove; 17. Card slot; 18. Fixed plate; 19. Bellows; 20. Filter plate; 21, filter screen; 22, air outlet; 23, spring seat; 24, bolt; 25, handle; 26, guide rod; 27, guide groove; 28, chute; 29, slider; 30, side groove; 31, Adjusting knob; 32, first air duct; 33, second air duct; 34, base; 35, plywood; 36, damping pad; 37, side plate; 38, mounting hole; 39, fixing bolt.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-8, the present invention provides a technical solution: a centrifugal fan for industrial ventilation includes a bottom plate 1, a frame 2 is fixedly installed on the top side of the bottom plate 1, and a motor is fixedly installed on the top of the frame 2 3. The bottom plate 1 is away from the frame 2 at the top of the casing 4. The end of the casing 4 close to the motor 3 is movably installed with a connecting shaft 5 through a bearing. The end of the connecting shaft 5 far away from the casing 4 is connected to the motor 3 through a flange 6. The output shaft, the end of the connecting shaft 5 away from the flange 6 is fixedly installed with the transmission shaft 7, the middle part of the transmission shaft 7 is fixedly installed with the impeller 8, and the top of the side of the casing 4 close to the movable casing 14 is provided with a first air duct 32, corrugated The middle part of the pipe 19 is provided with a second air passage 33, the first air passage 32, the second air passage 33 communicate with the air outlet 22, the bottom end of the base plate 1 is provided with a base 34, the top of the base 34 and the bottom end of the base plate 1 Both clamping plates 35 are fixedly installed, and a damping pad 36 is arranged between the two clamping plates 35. A plurality of fixed bolts 39 are movably connected between the bottom plate 1 and the base 34, and side plates 37 are fixedly connected to the outer sides of the two ends of the base 34. The middle part of the plate 37 is penetrated with several installation holes 38. When the equipment is running, start the motor 3. After the motor 3 starts, the drive shaft 7 is driven to rotate through the connecting shaft 5. After the drive shaft 7 rotates, centrifugal force is generated to move the air from the position of the air inlet 9. Inhale, then enter the bellows 19 along the first air channel 32 at the top of the casing 4, and then discharge from the air outlet 22 along the second air channel 33 inside the bellows 19, and when the motor 3 is running, pass through two splints 35 The damping pad 36 between them is used for shock absorption, which can reduce the mechanical noise generated by vibration when the equipment is running;

As shown in Figure 2, the air inlet 9 is opened at the end of the casing 4 away from the motor 3, the inside of the air inlet 9 is fixedly equipped with a fixed plate 10, and the outer side of the fixed plate 10 is fixedly installed with several screens 11, and the drive shaft 7 is far away from the connection. One end of the shaft 5 passes through the fixed plate 10 and is fixedly installed with some fixed strips 12, and the surface of the side of the several fixed strips 12 near the retaining net 11 is provided with a cleaning brush 13. Several fixed strips 12 rotate synchronously, and when several fixed strips 12 rotate, they drive the inner cleaning brush 13 to rub against the surface of the screen 11, so that the dust brought in during air circulation can be cleaned up, preventing dust from covering the screen 11, causing Affect the normal circulation of air, so that manual dust removal can be avoided, and the dust removal component is controlled by the motor 3, which also achieves the purpose of energy saving;

As shown in Figure 8, the movable casing 14 is movably installed on the top of the casing 4, and both sides of the casing 4 are movably equipped with lead screws 15 through bearings, and the bottom ends of both sides of the movable casing 14 are provided with thread grooves 16, and the threaded Groove 16 is movably connected with lead screw 15, and the top of movable shell 14 is fixedly connected with air outlet 22, and the top four corners of casing 4 are all fixedly installed with guide bar 26, and the four corners of bottom end of movable shell 14 are all provided with guide groove 27, guide The slot 27 is movably connected with the guide rod 26, and the both sides of the casing 4 near the movable shell 14 are provided with side slots 30, and the bottom end of the screw 15 is fixedly installed with an adjustment button 31 at the inner end of the side slot 30. When the installation height is 22, turn the adjustment knob 31 at the same time, when the adjustment knob 31 rotates, it will drive the screw 15 to rotate synchronously. After the screw 15 rotates, it will rotate along the thread groove 16. 26 and the guide groove 27 cooperate with the guide, so that the movable shell 14 can be controlled to rise and fall in a straight line, and then the air outlet 22 can be controlled to adjust the height, which is convenient for the installation of ventilation pipelines with different heights;

As shown in Figure 7, the card slots 17 are set in the top and bottom middle of the casing 4 and the movable shell 14, and the insides of the two card slots 17 are all snapped to the fixed plate 18, and the two fixed plates 18 are fixedly connected with corrugated The pipe 19 and the side of the two fixed plates 18 away from the corrugated tube 19 are clamped with a filter plate 20, the middle part of the filter plate 20 is fixedly equipped with a filter screen 21, and the outer sides of the two fixed plates 18 are fixedly equipped with handles 25 , the middle part of the handle 25 is fixedly equipped with an anti-slip sleeve, the four corners of the fixed plate 18 away from the bellows 19 are fixedly installed with spring seats 23, and the four corners of the filter plate 20 are all movable with bolts 24, and the bolts 24 and the four corners of the fixed plate 18 Threaded connection, the top of the spring seat 23 passes through the bolt 24 and is movably connected with the filter plate 20. When the filter plate 20 in the fixed plate 18 needs to be replaced, hold the handle 25 to move the bellows 19 from the slot 17 through the two fixed plates 18 Then use a tool to turn the bolt 24 to disassemble between the end of the bolt 24 and the fixed plate 18. At this time, the spring seat 23 at the four corners will drive the filter plate 20 to pop up quickly, and then the filter screen 21 in the filter plate 20 After cleaning or replacement, fix them in the fixing plate 18 again, and then snap the two fixing plates 18 into the slots 17 to fix them, so as to achieve the purpose of facilitating quick replacement of the filter assembly.

Working principle: Start the motor 3. After the motor 3 starts, it drives the transmission shaft 7 to rotate through the connecting shaft 5. After the transmission shaft 7 rotates, centrifugal force is generated to suck the air from the position of the air inlet 9, and then follow the first air duct at the top of the casing 4 32 enters the bellows 19, and then discharges from the air outlet 22 along the second air duct 33 inside the bellows 19. When the motor 3 is running, the transmission shaft 7 drives several fixed bars 12 at the end to rotate synchronously, and several fixed bars 12 rotate synchronously. When the strip 12 rotates, it drives the inner cleaning brush 13 to rub against the surface of the screen 11. When it is necessary to adjust the installation height of the air outlet 22, the adjustment knob 31 is rotated at the same time. When the adjustment knob 31 rotates, the screw 15 is driven to rotate synchronously, and the screw 15 rotates Then it rotates along the thread groove 16, and at the same time, the casing 4 and the movable casing 14 are guided through the guide rod 26 and the guide groove 27, so that the movable casing 14 can be controlled to rise and fall in a straight line, and then the air outlet 22 can be controlled to adjust the height. When replacing the filter plate 20 in the fixed plate 18, hold the handle 25 to disassemble the bellows 19 from the slot 17 through the two fixed plates 18, then use a tool to turn the bolt 24, and connect the end of the bolt 24 to the fixed plate 18. At this time, the spring seats 23 at the four corners will drive the filter plate 20 to pop up quickly, and then the filter screen 21 in the filter plate 20 will be cleaned or replaced and fixed in the fixed plate 18 again, and then the two fixed plates 18 will be snapped into Fix in the draw-in groove 17 and get final product.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A centrifugal fan for industrial ventilation, characterized in that: the centrifugal fan for industrial ventilation comprises

The motor comprises a bottom plate (1), wherein a frame (2) is fixedly arranged on one side of the top end of the bottom plate (1), a motor (3) is fixedly arranged on the top end of the frame (2), a top end shell (4) of one side of the bottom plate (1) away from the frame (2), a connecting shaft (5) is movably arranged at one end of the shell (4) close to the motor (3) through a bearing, an output shaft of the motor (3) is connected with one end of the connecting shaft (5) away from the shell (4) through a flange (6), a transmission shaft (7) is fixedly arranged at one end of the connecting shaft (5) away from the flange (6), and an impeller (8) is fixedly arranged in the middle of the transmission shaft (7);

the air inlet (9), the air inlet (9) is formed in one end of the shell (4) far away from the motor (3), a fixed disc (10) is fixedly arranged in the air inlet (9), a plurality of baffle nets (11) are fixedly arranged on the outer side of the fixed disc (10), a plurality of fixing strips (12) are fixedly arranged at one end of the transmission shaft (7) far away from the connecting shaft (5) through the fixed disc (10), and cleaning brushes (13) are respectively arranged on the surfaces of one sides of the fixing strips (12) close to the baffle nets (11);

the movable shell (14), the movable shell (14) is movably arranged at the top end of the casing (4), the two sides of the casing (4) are respectively and movably provided with a screw rod (15) through bearings, the bottom ends of the two sides of the movable shell (14) are respectively provided with a thread groove (16), the thread grooves (16) are movably connected with the screw rods (15), and the top end of the movable shell (14) is fixedly connected with an air outlet (22);

draw-in groove (17), draw-in groove (17) are seted up in the top and the bottom middle part of casing (4) and movable shell (14), two the inside of draw-in groove (17) is equal joint fixed plate (18), two fixedly connected with bellows (19) between fixed plate (18), two the equal joint in one side that bellows (19) were kept away from to fixed plate (18) has filter (20), the middle part fixed mounting of filter (20) has filter screen (21).

2. A centrifugal fan for industrial ventilation according to claim 1, wherein: the utility model discloses a corrugated filter, including corrugated tube (19), fixed plate (18), filter, bolt (24) and fixed plate (18), fixed plate (18) is kept away from one side four corners of corrugated tube (19) and is all fixed mounting in the four corners, the four corners of filter (20) are all movable mounting has bolt (24), the four corners threaded connection of bolt (24) and fixed plate (18), the top of spring holder (23) passes bolt (24) and filter (20) swing joint.

3. A centrifugal fan for industrial ventilation according to claim 1, wherein: handles (25) are fixedly arranged outside two sides of the two fixing plates (18), and an anti-skid sleeve is fixedly arranged in the middle of each handle (25).

4. A centrifugal fan for industrial ventilation according to claim 1, wherein: guide rods (26) are fixedly arranged at four corners of the top end of the shell (4), guide grooves (27) are formed in four corners of the bottom end of the movable shell (14), and the guide grooves (27) are movably connected with the guide rods (26).

5. A centrifugal fan for industrial ventilation according to claim 4, wherein: sliding grooves (28) are formed in the inner walls of the two sides of the guide groove (27), sliding blocks (29) are fixedly mounted on the two sides of the top end of the guide rod (26), and the sliding blocks (29) are movably connected with the sliding grooves (28).

6. A centrifugal fan for industrial ventilation according to claim 1, wherein: the side grooves (30) are formed in two sides, close to the movable shell (14), of the machine shell (4), and an adjusting button (31) is fixedly arranged at one end, located in the side grooves (30), of the bottom end of the screw rod (15).

7. A centrifugal fan for industrial ventilation according to claim 1, wherein: the casing (4) is close to one side top of movable shell (14) and has seted up first wind channel (32), second wind channel (33) have been seted up at the middle part of bellows (19), first wind channel (32), second wind channel (33) are linked together with air outlet (22).

8. A centrifugal fan for industrial ventilation according to claim 1, wherein: the bottom of bottom plate (1) is provided with base (34), the top of base (34) and the bottom of bottom plate (1) are all fixed mounting have splint (35), are provided with damping pad (36) between two splint (35).

9. A centrifugal fan for industrial ventilation according to claim 8, wherein: the outer sides of the middle parts of the two ends of the base (34) are fixedly connected with side plates (37), and a plurality of mounting holes (38) are formed in the middle parts of the side plates (37) in a penetrating mode.

10. A centrifugal fan for industrial ventilation according to claim 8, wherein: the bottom plate (1) is movably connected with the base (34) through a plurality of fixing bolts (39).