An axial flow fan for a tunnel brick kiln

Abstract

The present invention relates to the technical field of axial flow fans, and discloses an axial flow fan for a tunnel brick kiln, including a base. A housing is fixedly connected to the top of the base. A partition is fixedly connected to the middle end of the inner cavity of the housing. A motor is fixedly connected to the right side of the partition. A wind cylinder is connected through a support plate on the left side of the partition. A plurality of air extraction components are provided on the output shaft of the motor. The air extraction component includes two axially flow fan blade components symmetrically distributed. The axially flow fan blade component includes a first collar and a second collar sleeved on the output end of the motor. In the first aspect of the present invention, the air inlet angle of the axial flow fan is changed. In the second aspect, the air pressure and air volume can be increased. In the third aspect, an external circulation can be realized. In the fourth aspect, self-cleaning can be carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of axial fans, and specifically to an axial fan for a tunnel brick kiln. Background Art

[0002] Axial fans have a very wide range of uses. The airflow is in the same direction as the axis of the fan blades. For example, electric fans and the external fans of air conditioners operate in an axial flow mode. The reason it is called axial flow is that the gas flows parallel to the axis of the fan. Axial fans are usually used in occasions where a higher flow rate and a lower pressure are required. Axial fans are fixed in position and move the air. Axial fans mainly consist of a fan impeller and a casing, with a simple structure but very high data requirements.

[0003] For example, the axial fan for a tunnel brick kiln disclosed in the patent application No. CN107989811A includes a mounting base. A fixed frame is provided on the mounting base. The fixed frame is fixedly installed with a fan barrel. Inside the fan barrel, a main bearing carrier sleeve is fixedly arranged through a plurality of groups of connecting rods. The main bearing carrier sleeve is connected to the fan main shaft through a bearing. The fan main shaft is fixedly connected to the fan blades through a fan blade fixing device. The fan main shaft is also connected to an axial flow motor through a gear transmission mechanism. The axial flow motor is installed inside an insulating frame and the main shaft of the axial flow motor passes through the front end of the insulating frame. An emergency refrigeration device is arranged inside the insulating frame. In the present invention, the axial flow motor is arranged inside the insulating frame, and an emergency cooling device is arranged inside the insulating frame. When the infrared thermometer detects that the temperature inside the insulating frame is not suitable for the operation of the axial flow motor, the emergency cooling device is started to take away the high-temperature hot air inside the insulating frame and ensure the operating temperature of the axial flow motor.

[0004] Although the prior art meets the usage requirements of users to a certain extent, there are still certain defects in the process of use. The specific problems are as follows: This axial fan does not have an automatic cleaning function. After the axial fan is used in a tunnel brick kiln for a long time, excessive dust will inevitably be adsorbed on the surface of the blades. Long-term accumulation is likely to affect normal rotation, and due to long-term high-load operation, it is not convenient to dissipate heat, thus making it inconvenient for people to use.

[0005] In order to solve the above problems, we made improvements and proposed an axial fan for a tunnel brick kiln. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides the following technical solution: An axial flow fan for a tunnel brick kiln, comprising a base, a housing fixedly connected to the top of the base, a partition fixedly connected to the middle end of the inner cavity of the housing, a motor fixedly connected to the right side of the partition, a wind cylinder connected to the left side of the partition through a support plate, a plurality of air extraction components provided on the output shaft of the motor, the air extraction component comprising two axially-flowing fan blade components symmetrically distributed, the axially-flowing fan blade component comprising a first collar and a second collar sleeved on the output end of the motor, the inner side walls of the first collar and the second collar are both connected to the output end of the motor through a locking component, a receiving groove is provided on the opposite side of the first collar and the second collar, a rotation groove is provided on the outer wall of the receiving groove in a circumferential array, a rotating shaft rotates in the rotation groove, the circumferential side wall of the rotating shaft is movably connected to the rotation groove through an electromagnetic plug, a first bevel gear is provided at one end of the rotating shaft located in the rotation groove, a fan blade is provided at one end of the rotating shaft located outside the collar, an air cavity is provided on the circumferential side wall of the fan blade, an elastic sealing layer is provided in the air cavity, when all the fan blades on the same axially-flowing fan blade component are in the same plane, a closed circular disk is formed inside the fan blade, and the circular disk is hermetically connected to the wind cylinder, and the first bevel gear meshes with a second bevel gear.

[0007] Preferably, an inner threaded rod is fixed on the second bevel gear, a first bevel gear ring is provided on the outer side wall of the inner threaded rod, a second bevel gear ring meshing with the first bevel gear ring is provided in the receiving groove, an outer threaded rod driven by a stepping motor is in threaded connection with the inner threaded rod, the stepping motor is arranged in the second collar, a fitting groove adapted to the stepping motor and the inner threaded rod is provided in the second collar, a rotating ring is sleeved on one end of the outer threaded rod close to the output shaft of the stepping motor, a multi-stage telescopic rod is provided at one end of the rotating ring, the other end of the multi-stage telescopic rod is located inside the inner threaded rod, a counterbore adapted to the multi-stage telescopic rod is provided in the inner threaded rod, the circumferential inner side wall of the rotating ring is connected to the outer threaded rod through a limiting component, and one end of the rotating ring away from the inner threaded rod is connected to the fitting groove through an electromagnetic locking mechanism;

[0008] On both sides of one of the axially-flowing fan blade components located in the middle of the wind cylinder, there are air outlet pipes controlled by solenoid valves to conduct, the flow directions of the two air outlet pipes are opposite, one of the air outlet pipes is communicated with the atmosphere, and the other air outlet pipe is communicated with the chamber of the tunnel brick kiln.

[0009] Preferably, the electromagnetic locking mechanism comprises an electromagnetic telescopic locking pin arranged in the rotating ring, and jacks adapted to the electromagnetic telescopic locking pin are arranged on the inner wall of the fitting groove in a circumferential array.

[0010] Preferably, the locking component comprises electric telescopic columns arranged on the inner walls of the first collar and the second collar, and locking holes adapted to the electric telescopic columns are provided on the output shaft of the motor.

[0011] Preferably, the limiting component includes an electromagnetic telescopic limiting pin arranged on the inner wall of the swivel ring and a limiting hole formed in the outer threaded rod.

[0012] Preferably, a heat dissipation mechanism is arranged on the right side of the top of the housing. The heat dissipation mechanism includes a heat dissipation box fixedly connected to the right side of the top of the housing. A first fan is fixedly connected to the top of the inner cavity of the heat dissipation box. First card seats are fixedly connected to both the left and right sides of the inner cavity of the heat dissipation box. A first filter screen is clamped inside the first card seats. Refrigerating rods are fixedly connected to both the left and right sides of the inner cavity of the heat dissipation box and located at the bottom of the first filter screen. A delivery pipe communicates with the bottom of the heat dissipation box. The bottom of the delivery pipe communicates with a diffusion pipe, and a plurality of ventilation holes are formed in the bottom of the diffusion pipe.

[0013] Preferably, fixing blocks are fixedly connected to both the left and right sides of the top of the diffusion pipe, and the fixing blocks are fixedly connected to the top of the inner cavity of the housing.

[0014] Preferably, a box door is movably connected to the front side of the heat dissipation box through a hinge, and a handle is fixedly connected to the front side of the box door.

[0015] Preferably, a temperature sensor is fixedly connected to the right side of the bottom of the inner cavity of the housing, and a temperature display is arranged on the front side of the housing.

[0016] Preferably, a plurality of heat dissipation holes are formed in the right side of the inner surface of the housing. A fixing seat is fixedly connected to the bottom of the right side of the housing. A dust-proof net is placed on the top of the fixing seat. The inner surface of the fixing seat is threadedly connected with a mounting bolt, and the top of the mounting bolt is threadedly connected to the inner surface of the dust-proof net.

[0017] Preferably, support legs are fixedly connected to the four circumferences of the bottom of the base, and anti-slip pads are arranged at the bottoms of the support legs.

[0018] Compared with the prior art, the present invention provides an axial flow fan for a tunnel brick kiln, having the following beneficial effects:

[0019] 1. For this axial flow fan, by arranging the heat dissipation mechanism, the outside air can be refrigerated and then delivered into the inner cavity of the housing to dissipate heat from the motor, avoiding overheating of the motor caused by long-term high-load operation. By arranging the cleaning mechanism, the dust on the surface of the blades can be cleaned and sucked, avoiding excessive dust inevitably adsorbed on the surface of the blades, which is likely to affect normal rotation after long-term accumulation.

[0020] 2. For this axial flow fan, by setting the fixed block, the diffuser pipe can be limited in position to prevent it from falling. By setting the box door, it is convenient for people to disassemble and replace the first filter screen. By setting the temperature sensor and temperature display, it is convenient for people to view the temperature inside the outer shell cavity in real time. By setting the mounting bolts and fixed seats, it is convenient for people to disassemble the dust-proof net. And by setting the dust-proof net, it can prevent dust from entering the inner cavity of the outer shell through the heat dissipation holes.

[0021] 3. In the first aspect of the present invention, the air inlet angle of the axial flow fan is changed. In the second aspect, it can increase pressure and air volume. In the third aspect, it can achieve external circulation. In the fourth aspect, it can perform self-cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic cross-sectional structural diagram of the cleaning mechanism of the present invention;

[0025] Figure 3 is a schematic cross-sectional view of the heat dissipation mechanism of the present invention;

[0026] Figure 4 is a cross-sectional view of the outer shell of the present invention;

[0027] Figure 5 is the present invention Figure 4 schematic enlarged view of the structure at A in;

[0028] Figure 6 is a schematic structural diagram of the diffuser pipe of the present invention;

[0029] Figure 7 is a schematic structural diagram of the vertical plate of the present invention;

[0030] Figure 8 is a schematic structural diagram of the outer shell of Embodiment 2 of the present invention;

[0031] Figure 9 is a schematic diagram of the internal structure of the outer shell of Embodiment 2 of the present invention;

[0032] Figure 10 is a schematic diagram of the internal structure of the air duct of Embodiment 2 of the present invention;

[0033] Figure 11 is a schematic structural diagram of the axial flow fan blade assembly of Embodiment 2 of the present invention;

[0034] Figure 12Cross-sectional view of the axial flow fan blade assembly in Embodiment 2 of the present invention;

[0035] Figure 13 Fan blade cross-sectional view in Embodiment 2 of the present invention.

[0036] Wherein: 1, base; 2, outer shell; 3, temperature display; 4, cabinet door; 5, heat dissipation mechanism; 501, heat dissipation box; 502, first fan; 503, first filter screen; 504, first card seat; 505, refrigerating rod; 506, fixing block; 507, conveying pipe; 508, diffusing pipe; 6, cabinet door; 7, cleaning mechanism; 701, cleaning cabinet; 702, cylinder; 703, connecting rod; 704, slider; 705, vertical plate; 706, second card seat; 707, second filter screen; 708, second fan; 709, U-shaped plate; 710, brush; 711, rotating rod; 712, rotating motor; 713, horn-shaped pipe; 714, dust suction pipe; 715, fixing sleeve; 716, fixing rod; 8, blade; 9, anti-slip pad; 10, support leg; 11, fixing seat; 12, dust-proof net; 13, partition board; 14, motor; 15, temperature sensor; 16, mounting bolt; 17, heat dissipation hole; 18, axial flow fan blade assembly; 19, first collar; 20, second collar; 21, receiving groove; 22, rotating groove; 23, rotating shaft; 24, first bevel gear; 25, internal threaded rod; 26, stepper motor; 27, external threaded rod; 28, mating groove; 29, rotating ring; 30, multi-stage telescopic rod; 31, counterbore; 32, air duct; 33, air outlet pipe; 34, fan blade; 35, air cavity; 36, elastic sealing layer; 37, first bevel gear ring; 38, second bevel gear ring. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1

[0039] Please refer to Figures 1-7, which is the first embodiment of the present invention. This embodiment provides an axial flow fan for a tunnel brick kiln, including a base 1. A housing 2 is fixedly connected to the top of the base 1. A partition 13 is fixedly connected to the middle end of the inner cavity of the housing 2. A motor 14 is fixedly connected to the right side of the partition 13. A blade 8 is fixedly connected to the output end of the motor 14. A heat dissipation mechanism 5 is arranged on the right side of the top of the housing 2. The heat dissipation mechanism 5 includes a heat dissipation box 501. The heat dissipation box 501 is fixedly connected to the right side of the top of the housing 2. A first fan 502 is fixedly connected to the top of the inner cavity of the heat dissipation box 501. First card seats 504 are fixedly connected to both the left and right sides of the inner cavity of the heat dissipation box 501. A first filter screen 503 is clamped inside the first card seats 504. Refrigerating rods 505 are fixedly connected to both the left and right sides of the inner cavity of the heat dissipation box 501 and located at the bottom of the first filter screen 503. A delivery pipe 507 is communicated with the bottom of the heat dissipation box 501. The bottom of the delivery pipe 507 is communicated with a diffusion pipe 508, and a plurality of air holes are opened at the bottom of the diffusion pipe 508.

[0040] Specifically, fixing blocks 506 are fixedly connected to both the left and right sides of the top of the diffusion pipe 508, and the fixing blocks 506 are fixedly connected to the top of the inner cavity of the housing 2.

[0041] Through the above technical solution, by setting the fixing blocks 506, the diffusion pipe 508 can be limited to prevent it from falling.

[0042] Specifically, a box door 4 is movably connected to the front side of the heat dissipation box 501 through a hinge, and a handle is fixedly connected to the front side of the box door 4.

[0043] Through the above technical solution, by setting the box door 4, it is convenient for people to disassemble and replace the first filter screen 503.

[0044] Specifically, a temperature sensor 15 is fixedly connected to the right side of the bottom of the inner cavity of the housing 2, and a temperature display 3 is arranged on the front side of the housing 2.

[0045] Through the above technical solution, by setting the temperature sensor 15 and the temperature display 3, it is convenient for people to view the temperature inside the inner cavity of the housing 2 in real time.

[0046] Specifically, a plurality of heat dissipation holes 17 are opened on the right side of the inner surface of the housing 2. A fixing seat 11 is fixedly connected to the bottom of the right side of the housing 2. A dust-proof net 12 is placed on the top of the fixing seat 11. The inner surface of the fixing seat 11 is threadedly connected with a mounting bolt 16, and the top of the mounting bolt 16 is threadedly connected to the inner surface of the dust-proof net 12.

[0047] Through the above technical solution, by setting the mounting bolt 16 and the fixing seat 11, it is convenient for people to disassemble the dust-proof net 12, and by setting the dust-proof net 12, it can prevent dust from entering the inner cavity of the housing 2 through the heat dissipation holes 17.

[0048] Specifically, support legs 10 are fixedly connected to the periphery of the bottom of the base 1, and anti-slip pads 9 are provided at the bottoms of the support legs 10.

[0049] Through the above technical solution, by providing the anti-slip pads 9, an anti-slip effect can be achieved, improving the overall stability.

[0050] The specific implementation manner of this embodiment is as follows: When it is necessary to dissipate heat from the motor 14, air from the outside is sucked into the inner cavity of the heat dissipation box 501 through the input end of the first fan 502. The air first passes through the first filter screen 503 for filtration. Subsequently, the air is cooled by the refrigerating rod 505, and the cooled air enters the inner cavity of the housing 2 through the delivery pipe 507 and the diffuser pipe 508 to dissipate heat from the motor 14, preventing the motor 14 from overheating due to high-load long-term operation and then being damaged.

[0051] A cleaning mechanism 7 is provided on the left side of the top of the housing 2. The cleaning mechanism 7 includes a cleaning cabinet 701, which is fixedly connected to the left side of the top of the housing 2. A cylinder 702 is fixedly connected to the left side of the top of the inner cavity of the cleaning cabinet 701. A U-shaped plate 709 is fixedly connected to the bottom of the cylinder 702. A rotating motor 712 is fixedly connected to the bottom of the U-shaped plate 709. A rotating rod 711 is fixedly connected to the output end of the rotating motor 712. A plurality of brush hairs 710 are provided on the outer surface of the rotating rod 711. A second fan 708 is fixedly connected to the right side of the inner cavity of the cleaning cabinet 701. Second clamping seats 706 are fixedly connected to the upper and lower sides of the inner cavity of the cleaning cabinet 701. A second filter screen 707 is clamped inside the second clamping seats 706. A dust suction pipe 714 is communicated with the right side of the bottom of the cleaning cabinet 701. One end of the dust suction pipe 714 away from the cleaning cabinet 701 is communicated with a horn pipe 713.

[0052] Specifically, a fixing sleeve 715 is sleeved on the outer surface of the dust suction pipe 714. A fixing rod 716 is fixedly connected to the right side of the fixing sleeve 715, and the right side of the fixing rod 716 is fixedly connected to the top of the left side of the partition plate 13.

[0053] Through the above technical solution, by providing the fixing sleeve 715 and the fixing rod 716, the dust suction pipe 714 can be fixed to prevent it from falling off.

[0054] Specifically, a vertical plate 705 is fixedly connected to the middle end of the inner cavity of the cleaning cabinet 701. A cylinder 702 is provided in the left side of the vertical plate 705. A connecting rod 703 is fixedly connected to the right side of the top of the U-shaped plate 709. A slider 704 is fixedly connected to the top of the right side of the connecting rod 703, and the slider 704 is slidably connected to the inner cavity of the cylinder 702.

[0055] Through the above technical solution, by providing the vertical plate 705, the cylinder 702, the slider 704 and the connecting rod 703, the stability of the U-shaped plate 709 during movement can be improved.

[0056] Specifically, the front side of the cleaning cabinet 701 is movably connected to the cabinet door 6 through a hinge, and a handle is fixedly connected to the front side of the cabinet door 6.

[0057] Through the above technical solution, by providing the cabinet door 6, it is convenient for people to take out the second filter screen 707 for cleaning or replacement.

[0058] The specific implementation manner of this embodiment is as follows: When it is necessary to clean the blade 8, the output end of the rotating motor 712 drives the rotating rod 711 to rotate, and the rotating rod 711 drives the brush 710 to rotate. Subsequently, the cylinder 702 extends to drive the U-shaped plate 709 to move downward, and the U-shaped plate 709 drives the brush 710 to move downward to clean the surface of the blade 8, preventing stubborn dust from adhering to the outer surface of the blade 8. The suction is generated at the input end of the second blower 708, and the dust on the surface of the blade 8 is sucked into the inner cavity of the cleaning cabinet 701 through the dust suction pipe 714 and the horn pipe 713, ensuring the cleanliness of the outer surface of the blade 8.

[0059] During use, when it is necessary to clean the blade 8, the output end of the rotating motor 712 drives the rotating rod 711 to rotate, and the rotating rod 711 drives the brush 710 to rotate. Subsequently, the cylinder 702 extends to drive the U-shaped plate 709 to move downward, and the U-shaped plate 709 drives the brush 710 to move downward to clean the surface of the blade 8, preventing stubborn dust from adhering to the outer surface of the blade 8. The suction is generated at the input end of the second blower 708, and the dust on the surface of the blade 8 is sucked into the inner cavity of the cleaning cabinet 701 through the dust suction pipe 714 and the horn pipe 713, ensuring the cleanliness of the outer surface of the blade 8. When it is necessary to dissipate heat from the motor 14, the outside air is sucked into the inner cavity of the heat dissipation box 501 through the input end of the first blower 502. The air first passes through the first filter screen 503 for filtration. Subsequently, the air is cooled by the refrigerating rod 505, and the cooled air enters the inner cavity of the housing 2 through the delivery pipe 507 and the diffuser pipe 508 to dissipate heat from the motor 14, preventing the motor 14 from overheating due to high-load long-term operation and then being damaged.

[0060] Embodiment Two

[0061] Based on the previous embodiment, although Embodiment 1 can clean the axial flow fan, it cannot adjust the air inlet angle of the axial flow fan. At the same time, during the manufacturing process of the tunnel brick kiln, it is often necessary to have one axial flow fan for air supply and another for exhaust. It is impossible to use one fan to meet the external circulation at the same time. In addition, the air pressure of the axial flow fan is low, and it cannot meet the requirements for long-distance transportation. To solve the above technical problems, the following improvements are made.

[0062] Such as Figures 8-13As shown in the figure, an axial flow fan for a tunnel brick kiln includes a base 1. A housing 2 is fixedly connected to the top of the base 1. A partition 13 is fixedly connected to the middle of the inner cavity of the housing 2. A motor 14 is fixedly connected to the right side of the partition 13. The left side of the partition 13 is connected to a wind tube 32 through a support plate. Multiple air extraction components are provided on the output shaft of the motor 14. The air extraction component includes two axially-flow fan blade components 18 that are symmetrically distributed. The axially-flow fan blade component 18 includes a first collar 19 and a second collar 20 sleeved on the output end of the motor 14. The inner side walls of the first collar 19 and the second collar 20 are both connected to the output end of the motor 14 through locking components. A receiving groove 21 is provided on the opposite side of the first collar 19 and the second collar 20. A rotation groove 22 is provided on the outer wall of the receiving groove 21 and is distributed in a circumferential array. A rotating shaft 23 rotates in the rotation groove 22. The circumferential side wall of the rotating shaft 23 is movably connected to the rotation groove 22 through an electromagnetic plug. One end of the rotating shaft 23 located in the rotation groove 22 is provided with a first bevel gear 24. One end of the rotating shaft 23 located outside the collar is provided with a fan blade 34. An air cavity 35 is provided on the circumferential side wall of the fan blade 34. An elastic sealing layer 36 is provided in the air cavity 35. When all the fan blades 34 on the same axially-flow fan blade component 18 are in the same plane, a closed circular disk is formed inside the fan blade 34, and the circular disk is hermetically connected to the wind tube 32. The first bevel gear 24 meshes with a second bevel gear. An internal threaded rod 25 is fixed on the second bevel gear. A first bevel gear ring 37 is provided on the outer side wall of the internal threaded rod 25. A second bevel gear ring 38 meshing with the first bevel gear ring 37 is provided in the receiving groove 21. An external threaded rod 27 driven by a stepping motor 26 is threadedly connected inside the internal threaded rod 25. The stepping motor 26 is arranged inside the second collar 20. A fitting groove 28 adapted to the stepping motor 26 and the internal threaded rod 25 is provided inside the second collar 20. A rotating ring 29 is sleeved on one end of the external threaded rod 27 close to the output shaft of the stepping motor 26. One end of the rotating ring 29 is provided with a multi-stage telescopic rod 30. The other end of the multi-stage telescopic rod 30 is located inside the internal threaded rod 25. A counterbore 31 adapted to the multi-stage telescopic rod 30 is provided inside the internal threaded rod 25. The circumferential inner side wall of the rotating ring 29 is connected to the external threaded rod 27 through a limiting component. One end of the rotating ring 29 away from the internal threaded rod 25 is connected to the fitting groove 28 through an electromagnetic locking mechanism.

[0063] On both sides of one of the axially-flow fan blade components 18 located in the middle of the wind tube 32, there are air outlet pipes 33 controlled by solenoid valves to conduct. The flow directions of the two air outlet pipes 33 are opposite. One of the air outlet pipes 33 is communicated with the atmosphere, and the other air outlet pipe 33 is communicated with the chamber of the tunnel brick kiln; In the present invention, by controlling the solenoid valve, the opening and closing of the solenoid valve are controlled, and thus the on-off of the air outlet pipe 33 is controlled.

[0064] The electromagnetic locking mechanism includes an electromagnetic telescopic locking pin disposed within the swivel ring 29, and insertion holes that are arranged in a circumferential array on the inner wall of the mating groove 28 and are adapted to the electromagnetic telescopic locking pin; in the present invention, by controlling the electromagnetic telescopic locking pin to extend, the electromagnetic telescopic locking pin is inserted into the insertion hole, so that the swivel ring 29 and the mating groove 28 are locked.

[0065] The locking assembly includes electric telescopic columns disposed on the inner walls of the first collar 19 and the second collar 20, and a locking hole that is provided on the output shaft of the electric motor 14 and is in locking cooperation with the electric telescopic columns; in the present invention, by controlling the electric telescopic columns to extend and insert into the locking hole, the first collar 19 and the second collar 20 are locked to the output shaft of the electric motor 14, so that the electric motor 14 can drive the first collar 19 and the second collar 20 to rotate.

[0066] The limiting assembly includes an electromagnetic telescopic limiting pin disposed on the inner wall of the swivel ring 29 and a limiting hole formed in the outer threaded rod 27. In the present invention, by controlling the electromagnetic telescopic limiting pin to extend, the electromagnetic telescopic limiting pin extends and is inserted into the limiting hole, so that the swivel ring 29 and the outer threaded rod 27 are locked. Furthermore, during the process that the stepper motor 26 drives the outer threaded rod 27 to rotate, the swivel ring 29 is driven to rotate simultaneously. The swivel ring 29 rotates and drives the multi-stage telescopic rod 30 to rotate. The multi-stage telescopic rod 30 rotates and drives the inner threaded rod 25 to rotate. The inner threaded rod 25 rotates and drives the outer threaded rod 27. The outer threaded rod 27 rotates and drives the second bevel gear to rotate. The second bevel gear rotates and drives the first bevel gear 24 to rotate. The first bevel gear 24 rotates and drives the rotating shaft 23 to rotate. The rotating shaft 23 rotates and drives the fan blade 34 to rotate, so as to realize the opening angle of the fan blade 34, thereby adjusting the air intake volume.

[0067] During use, first, control the locking assembly on the first collar 19 and the second collar 20 to lock, so that the first collar 19 and the second collar 20 are locked to the output shaft of the electric motor 14. Then, by controlling the electromagnetic telescopic locking pin to extend, the electromagnetic telescopic locking pin is inserted into the insertion hole, so that the swivel ring 29 and the mating groove 28 are locked. Since the swivel ring 29 is connected to the multi-stage telescopic rod 30, and at the same time the multi-stage telescopic rod 30 is connected to the inner threaded rod 25, the rotation direction of the inner threaded rod 25 around the output shaft of the stepper motor 26 is restricted. Then, control the stepper motor 26 to rotate. The stepper motor 26 rotates and drives the outer threaded rod 27 to rotate, and drives the swivel ring 29 to rotate simultaneously. The swivel ring 29 rotates and drives the multi-stage telescopic rod 30 to rotate. The multi-stage telescopic rod 30 rotates and drives the inner threaded rod 25 to rotate. The inner threaded rod 25 rotates and drives the outer threaded rod 27. The outer threaded rod 27 rotates and drives the second bevel gear to rotate. The second bevel gear rotates and drives the first bevel gear 24 to rotate. The first bevel gear 24 rotates and drives the rotating shaft 23 to rotate. The rotating shaft 23 rotates and drives the fan blade 34 to rotate. The fan blade 34 opens a certain air intake angle. Then, start the electric motor 14, so as to realize the opening angle of the fan blade 34, thereby adjusting the air intake volume.

[0068] When pressurization is required, first, unlock by controlling the locking component on the second set of rings 20. Then, control the electromagnetic telescopic lock pins on the rotating rings 29 corresponding to two symmetrically arranged stepper motors 26 to extend, so that the electromagnetic telescopic lock pins are inserted into the jacks, thereby locking the rotating rings 29 with the mating grooves 28. Since the rotating rings 29 are connected to the multi-stage telescopic rods 30, and at the same time the multi-stage telescopic rods 30 are connected to the inner threaded rods 25, the rotation of the inner threaded rods 25 in the direction of the output shaft of the stepper motor 26 is restricted. Then, control the stepper motor 26 to rotate. The stepper motor 26 rotates and drives the outer threaded rod 27 to rotate. Under the action of the thread, the inner threaded rod 25 contracts, so that the first bevel gear ring 37 meshes with the second bevel gear ring 38. Then, control the limiting components on the rotating rings 29 corresponding to two symmetrically arranged stepper motors 26 to lock and at the same time control the corresponding electromagnetic telescopic lock pins to unlock, thereby releasing the locking between the rotating rings 29 and the mating grooves 28, and at the same time locking the rotating rings 29 with the outer threaded rod 27. Then, control the above two stepper motors 26 to rotate. The stepper motor 26 rotates and drives the outer threaded rod 27 to rotate. The outer threaded rod 27 rotates and drives the rotating ring 29 to rotate. The rotating ring 29 rotates and drives the multi-stage telescopic rod 30 to rotate. The multi-stage telescopic rod 30 rotates and drives the inner threaded rod 25 to rotate. The inner threaded rod 25 rotates and drives the first bevel gear ring 37 to rotate. The first bevel gear ring 37 rotates and drives the second bevel gear ring 38 to rotate. The second bevel gear ring 38 rotates and drives the second set of rings 20 to rotate around the output shaft of the motor 14, thereby further increasing the rotational speed of the fan blades 34 on the basis of the rotational speed of the motor 14 driving the axial flow fan blade assembly 18, so as to achieve pressurization and increased air volume.

[0069] When internal and external air exchange is required, the electromagnetic telescopic lock pin corresponding to the swivel ring 29 on the axial flow fan blade assembly 18 located between the two air outlet pipes 33 is controlled to elongate, so that the electromagnetic telescopic lock pin is inserted into the jack, thereby locking the swivel ring 29 with the mating groove 28. Since the swivel ring 29 is connected to the multi-stage telescopic rod 30, and at the same time the multi-stage telescopic rod 30 is connected to the inner threaded rod 25, the rotation direction of the inner threaded rod 25 around the output shaft of the stepper motor 26 is restricted. Then, the stepper motor 26 is controlled to rotate. The stepper motor 26 rotates and drives the outer threaded rod 27 to rotate. Under the action of the thread, the inner threaded rod 25 extends out, so that the second bevel gear meshes with the first bevel gear 24. Then, the limit assembly on the swivel ring 29 corresponding to the stepper motor 26 is controlled to lock, and at the same time the corresponding electromagnetic telescopic lock pin is controlled to unlock, so that the locking between the swivel ring 29 and the mating groove 28 is released, and at the same time the swivel ring 29 is locked with the outer threaded rod 27. Then, the stepper motor 26 is controlled to rotate. The stepper motor 26 rotates and drives the outer threaded rod 27 to rotate. The outer threaded rod 27 rotates and drives the swivel ring 29 to rotate. The swivel ring 29 rotates and drives the multi-stage telescopic rod 30 to rotate. The multi-stage telescopic rod 30 rotates and drives the inner threaded rod 25 to rotate. The inner threaded rod 25 rotates and drives the second bevel gear to rotate. The second bevel gear rotates and drives the first bevel gear 24 to rotate. The first bevel gear 24 rotates and drives the rotating shaft 23 to rotate. The rotating shaft 23 rotates and drives the fan blades 34 to be in the same plane. Since the circumferential side wall of the fan blade 34 is provided with an elastic sealing layer 36, the axial flow fan blade assembly 18 divides the air duct 32 into two chambers. Then, by controlling the axial flow fan blade assembly 18 in one of the chambers to draw in the external atmosphere and reach the other air outlet pipe 33 through the air duct 32 to communicate with the tunnel brick kiln chamber, the gas is conveyed inward. Then, one of the air outlet pipes 33 is controlled to communicate with the atmosphere through the solenoid valve, and then the rotation angle of the fan blade 34 is controlled to adjust the wind direction, so as to extract the air in the tunnel brick kiln chamber, and then reach one of the air outlet pipes 33 through the air duct 32 to communicate with the atmosphere, thereby realizing the external circulation.

[0070] When the fan blade 34 needs to be cleaned, one of the fan blades 34 on one of the axially symmetrically arranged axial flow fan blade assemblies 18 can also be controlled to rotate 90 degrees, and then the air chamber 35 corresponding to the fan blade 34 is inflated to make the elastic sealing layer 36 expand. By controlling the second collar 20 to contact the fan blade 34 on the other axial flow fan blade assembly 18, and then controlling one of the axial flow fan blade assemblies 18 to unlock from the output shaft of the motor 14, the motor 14 is rotated to drive the fan blade 34 that has rotated 90 degrees to clean the other axial flow fan blade assembly 18.

[0071] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0072] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An axial flow fan for a tunnel brick kiln, comprising a base, characterized in that: The top of the base is fixedly connected with a housing. The middle of the inner cavity of the housing is fixedly connected with a partition board. The right side of the partition board is fixedly connected with a motor. The left side of the partition board is connected with a wind tunnel through a support plate. A plurality of air extraction assemblies are arranged on the output shaft of the motor. The air extraction assembly includes two axially-flow fan blade assemblies which are symmetrically distributed. The axially-flow fan blade assembly includes a first collar and a second collar sleeved on the output end of the motor. The inner side walls of the first collar and the second collar are both connected with the output end of the motor through a locking assembly. A receiving groove is arranged on the opposite side of the first collar and the second collar. The outer wall of the receiving groove is provided with rotation grooves which are arranged in a circumferential array. A rotating shaft is rotated in the rotation groove. The circumferential side wall of the rotating shaft is movably connected with the rotation groove through an electromagnetic plug pin. One end of the rotating shaft located in the rotation groove is provided with a first bevel gear. One end of the rotating shaft located outside the collar is provided with a fan blade. An air cavity is arranged on the circumferential side wall of the fan blade. An elastic sealing layer is arranged in the air cavity. When all the fan blades on the same axially-flow fan blade assembly are in the same plane, a closed circular ring plate is formed in the fan blade, and the circular ring plate is hermetically connected with the wind tunnel. The first bevel gear is meshed with a second bevel gear. An inner threaded rod is fixed on the second bevel gear. A first bevel gear ring is arranged on the outer side wall of the inner threaded rod. A second bevel gear ring which is meshed with the first bevel gear ring is arranged in the receiving groove; An outer threaded rod driven by a stepping motor is in threaded connection with the inner threaded rod. The stepping motor is arranged in the second collar. A fitting groove which is adapted to the stepping motor and the inner threaded rod is arranged in the second collar. A rotating ring is sleeved on one end of the outer threaded rod close to the output shaft of the stepping motor. One end of the rotating ring is provided with a multi-stage telescopic rod. The other end of the multi-stage telescopic rod is located in the inner threaded rod. A counterbore which is adapted to the multi-stage telescopic rod is arranged in the inner threaded rod. The circumferential inner side wall of the rotating ring is connected with the outer threaded rod through a limiting assembly. One end of the rotating ring away from the inner threaded rod is connected with the fitting groove through an electromagnetic locking mechanism; Air outlet pipes controlled by solenoid valves to conduct are arranged on both sides of one of the axially-flow fan blade assemblies in the middle of the wind tunnel. The flow directions of the two air outlet pipes are opposite. One of the air outlet pipes is communicated with the atmosphere, and the other air outlet pipe is communicated with the tunnel brick kiln chamber.

2. The axial flow fan for a tunnel brick kiln according to claim 1, wherein: The electromagnetic locking mechanism includes an electromagnetic telescopic locking pin arranged in the rotating ring. A jack which is adapted to the electromagnetic telescopic locking pin is arranged on the inner wall of the fitting groove in a circumferential array; The locking assembly includes an electric telescopic column arranged on the inner walls of the first collar and the second collar. A locking hole which is locked and matched with the electric telescopic column is arranged on the output shaft of the motor.

3. The axial flow fan for a tunnel brick kiln according to claim 1, characterized in that: The limiting assembly includes an electromagnetic telescopic limiting pin arranged on the inner wall of the rotating ring and a limiting hole opened on the outer threaded rod.

4. The axial flow fan for a tunnel brick kiln according to claim 1, wherein: A heat dissipation mechanism is provided on the right side of the top of the housing. The heat dissipation mechanism includes a heat dissipation box which is fixedly connected to the right side of the top of the housing. A first fan is fixedly connected to the top of the inner cavity of the heat dissipation box. First card seats are fixedly connected to both the left and right sides of the inner cavity of the heat dissipation box. A first filter screen is clamped inside the first card seats. Refrigerating rods are fixedly connected to both the left and right sides of the inner cavity of the heat dissipation box and located at the bottom of the first filter screen. A delivery pipe is communicated with the bottom of the heat dissipation box. The bottom of the delivery pipe is communicated with a diffuser pipe, and a plurality of air permeation holes are formed in the bottom of the diffuser pipe.

5. The axial flow fan for a tunnel brick kiln according to claim 4, characterized in that: Fixed blocks are fixedly connected to both the left and right sides of the top of the diffuser pipe, and the fixed blocks are fixedly connected to the top of the inner cavity of the housing.

6. The axial flow fan for a tunnel brick kiln according to claim 4, wherein: A box door is movably connected to the front side of the heat dissipation box through a hinge, and a handle is fixedly connected to the front side of the box door.

7. The axial flow fan for a tunnel brick kiln according to claim 1, wherein: A temperature sensor is fixedly connected to the right side of the bottom of the inner cavity of the housing, and a temperature display is arranged on the front side of the housing.

8. The axial flow fan for a tunnel brick kiln according to claim 1, characterized in that: A plurality of heat dissipation holes are formed in the right side of the inner surface of the housing. A fixed seat is fixedly connected to the bottom of the right side of the housing. A dust-proof net is placed on the top of the fixed seat. The inner surface of the fixed seat is threadedly connected with a mounting bolt, and the top of the mounting bolt is threadedly connected to the inner surface of the dust-proof net.

9. The axial flow fan for a tunnel brick kiln according to claim 1, characterized in that: Support legs are fixedly connected to the four circumferences of the bottom of the base, and anti-slip pads are arranged at the bottoms of the support legs.

Images