CN112556138B

CN112556138B - Based on energy-concerving and environment-protective high-efficient supply-air outlet structure

Info

Publication number: CN112556138B
Application number: CN202011435448.8A
Authority: CN
Inventors: 李丹
Original assignee: Ningxia Haimeixiang Construction Engineering Co ltd
Current assignee: Ningxia haimeixiang Construction Engineering Co., Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-11-30
Anticipated expiration: 2040-12-10
Also published as: CN112556138A

Abstract

The invention discloses an energy-saving environment-friendly efficient air supply outlet structure, relates to the technical field of environment-friendly application, and solves the problem that the existing air supply outlet structure does not have the function of assisting air suction by using other elements after a natural air port is quickly and automatically opened or closed. An energy-saving environment-friendly efficient air supply outlet structure comprises a main channel; the main channel also comprises an air outlet channel, an exhaust net and a top plate; an air outlet channel is integrally arranged at the rear side of the main channel; the rear side of air-out passageway is provided with the exhaust net through the bolt fastening, seals the row through being provided with, provides the sealing function for the air inlet, utilizes the air inlet can keep natural draft, and external natural wind can be connected to the fan ring shell, guarantees can not lead to indoor air current confusion at the in-process of machinery air supply, when needs accelerate wind-force transport, seals the bottom of the grid structure laminating air inlet of row, seals the bottom of air inlet, prevents indoor natural wind to flow.

Description

Based on energy-concerving and environment-protective high-efficient supply-air outlet structure

Technical Field

The invention relates to the technical field of environmental protection application, in particular to an energy-saving and environment-friendly efficient air supply outlet structure.

Background

The air supply outlet is a pipe orifice which conveys air to the indoor from the center of the air conditioning pipeline. The shell of the air supply outlet is made of high-quality cold-rolled steel plates, the surface static spraying plastics is contained in the static pressure box, the high-efficiency filter and the flow dispersing plate, and the shell can be used as a terminal high-efficiency filtering device in clean ceilings and other places in reconstruction and new-built cleaning rooms, so that the shell has the advantages of low investment, simplicity and convenience in construction and the like.

Through retrieving, for example, patent with patent number CN208139541U discloses an energy-saving environment-friendly efficient air supply opening structure, which comprises an air supply case and a connecting block, wherein a top air inlet flange connector is installed at the top of the air supply case, side air inlet flange connectors which are mutually symmetrical are arranged on two sides of the air supply case, a mounting plate is arranged at the bottom of the air supply case, and an air outlet is arranged in the mounting plate. The utility model discloses a beneficial effect is: the dust collector, the activated carbon filter screen and the high-efficiency filter are arranged in the air supply box body, so that bacteria or viruses in fresh air can be isolated from entering a room along with air conditioning air to a great extent, the safety and sanitation of the room are guaranteed, and a safe and comfortable environment is provided for people working and living; be provided with in the both sides of mounting panel can with the linking piece of mutual block for whole box accessible dead weight is laid at the roof, makes the installation become simpler, and only needs can be with the tight fixing on the roof of whole device through a small amount of inflation screw.

For another example, patent No. CN206929945U discloses a novel energy-saving, environment-friendly and efficient air supply outlet structure, which includes a rectangular box body, wherein the rectangular box body is provided with an air inlet and an air outlet; and the air volume adjusting valve is positioned at the air inlet and is embedded in the rectangular box body. The application provides a novel energy-concerving and environment-protective high-efficient supply-air outlet structure, simple structure is reasonable, installation convenient to use. Overall structure is compact, can realize the regulation of the amount of wind through the air regulation valve of installation, utilizes the detection round hole of addding, can install amount of wind, filtration efficiency detection device, to the independent air supply of the supply-air outlet that will detect, can test each item index of this structure supply-air outlet. The flow equalizing plate ensures stable air flow, effectively protects the high-efficiency filter and prolongs the service life of the high-efficiency filter by times.

However, the air supply outlet structure used at present does not have the function of assisting air suction by using other elements after a natural air port is quickly and automatically opened or closed, does not have the function of quickly and automatically starting mechanical air supply operation, and cannot seal the mechanical air supply outlet after mechanical air supply is stopped, so that the existing requirements are not met, and an energy-saving environment-friendly efficient air supply outlet structure is provided.

Disclosure of Invention

Problem (A)

The invention aims to provide an energy-saving environment-friendly high-efficiency air supply outlet structure, which is used for solving the problems that the existing air supply outlet structure proposed in the background technology does not have the function of assisting air suction by using other elements after a natural air port is quickly and automatically opened or closed, does not have the function of quickly and automatically starting mechanical air supply to operate, and cannot seal the mechanical air supply outlet after mechanical air supply is stopped.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an energy-saving environment-friendly efficient air supply outlet structure comprises a main channel; the main channel also comprises an air outlet channel, an exhaust net and a top plate; an air outlet channel is integrally arranged at the rear side of the main channel; an exhaust net is fixedly arranged at the rear side of the air outlet channel through bolts; a top plate is fixedly arranged at the top of the main channel, two groups of square holes are formed in the middle of the top plate, and cross rods are fixedly arranged at the tops of the square holes through bolts; the front side of the main channel is fixedly provided with a front plate through bolts; the front plate also comprises an air inlet and an L-shaped sliding chute; the front side of the front plate is integrally provided with two rows of air inlets, the air inlets are of a protruding structure extending forwards, and the bottom of the front side of each air inlet is of an open structure; two groups of L-shaped sliding grooves are fixedly arranged at two ends of the front side of the front plate; and an air inlet seat A and an air inlet seat B are fixedly arranged on two sides of the top of the main channel.

Preferably, the front plate further comprises a miniature electric cylinder and a sealing row; a sealing row is arranged in the L-shaped sliding groove in a sliding mode, the sealing row is of a grid structure, and the top surface of the sealing row can be attached to the bottom surface of the sealed air inlet; the front side top of front bezel is fixed and is provided with miniature electronic jar, and the flexible end in top of miniature electronic jar is with sealing row fixed connection.

Preferably, the air inlet seat A further comprises an exhaust groove and an assembly seat hole; the bottom of the air inlet seat A is provided with an air exhaust groove, and the air exhaust groove, the air outlet channel and the square hole of the top plate are aligned; an assembly seat hole is formed in the top of the air inlet seat A and is of a T-shaped structure; one end of the rear side of the air inlet seat A is provided with a notch structure.

Preferably, the air inlet seat A and the air inlet seat B are of symmetrical structures, and a middle frame is fixedly arranged in the rear side gap structures of the air inlet seat A and the air inlet seat B through bolts; the main body of the middle frame is arranged into an H-shaped structure, and the two sides and the front end of the middle frame are attached and sealed with the rear side gaps of the air inlet seat A and the air inlet seat B; the top of the middle frame is fixedly provided with a motor; the rear sides of the air inlet seat A and the air inlet seat B are of an open structure, and the rear sides of the air inlet seat A and the air inlet seat B are fixedly connected through a rear cover plate arranged through bolts.

Preferably, the cross rod further comprises a driven shaft and a middle pedestal; driven shafts are rotatably arranged in the middle of the cross rods through tapered roller bearings, and middle pedestals are fixedly arranged at the tops of the driven shafts through bolts; a fan ring shell is rotatably arranged on the outer side of the cross rod through a tapered roller bearing; and a gear ring is rotatably arranged on the outer side of the driven shaft through a tapered roller bearing.

Preferably, the fan ring shell further comprises a fan plate, a shaft block, a pull block and a sliding shaft; ten groups of fan plates are rotatably arranged between the inner side of the fan ring shell and the middle pedestal through an integrated rotating shaft, and the ten groups of fan plates are all in 36-degree fan-shaped structures; the top of the fan ring shell is of a flange structure, and ten groups of shaft blocks are integrally arranged at the bottom of the flange structure at equal intervals; the rotating shafts of the fan plates penetrate through the outer end of the fan ring shell and are rotatably connected with the group of shaft blocks; the outer end of the rotating shaft of the fan plate is fixedly provided with a pull block, and the outer side of the other end of the pull block is fixedly provided with a sliding shaft; the top outside of fan ring shell is provided with the dust screen.

Preferably, the gear ring further comprises a sliding block; ten groups of sliding blocks are integrally arranged at the top of the gear ring, and sliding grooves are formed in the inner sides of the sliding blocks; the sliding shafts are arranged in the sliding blocks in a sliding mode and are located at the bottom ends of the inner sides of the sliding blocks when the ten groups of fan plates are combined; the ten sets of fan plates are all spread out 30 deg. when the sliding shaft is at the top of the inside of the slider.

Preferably, two groups of transmission shafts are rotatably arranged on two sides of the bottom of the middle frame through bearings, and the two groups of transmission shafts are in transmission connection with a bevel gear arranged on the motor; the rear ends of the inner sides of the air inlet seat A and the air inlet seat B are respectively provided with a connecting shaft, and the bottom of each connecting shaft is provided with a bevel gear in transmission connection with a transmission shaft; the outer side of the gear ring is provided with a gear structure, and the outer side of the connecting shaft is fixedly provided with a gear which is in meshed transmission connection with the gear structure on the outer side of the gear ring.

(III) advantageous effects

The invention provides an energy-saving environment-friendly high-efficiency air supply outlet structure, which is characterized in that a sealing row is arranged to provide a sealing function for an air inlet, natural ventilation can be kept by the air inlet, a fan ring shell can be connected with external natural air, indoor airflow confusion is avoided in the mechanical air supply process, a miniature electric cylinder can be started when wind power transmission needs to be accelerated, the miniature electric cylinder is further lifted up, the sealing row is attached to the bottom of the air inlet through a grid structure of the sealing row, the bottom of the air inlet is sealed, and indoor natural air flow is prevented.

Secondly, the gear ring and the fan ring shell can be used in a matched mode, the motor drives the transmission shaft, the connecting shaft to rotate and the gear ring to rotate through the bevel gear, the sliding block further rotates, the sliding block drives the sliding shaft to rotate while the gear ring rotates, the sliding shaft drives the pull block to rotate, the sliding shaft rises when the pull block rotates to drive the shaft block to lift, the fan plate is unfolded by 30 degrees, and a fan assembly is formed; at rotatory in-process, the fan board can pass the exhaust net and carry the place that needs quick replacement air as the power supply with the air-out passageway of external air suction, and the air supply is fast, can realize high-efficient air supply.

Moreover, after the gear ring stops rotating, the shaft block moves downwards in the sliding shaft, the fan plate restores the original position through inertia and gravity, the mechanical air supply opening can be sealed after mechanical air supply is stopped, the self-locking effect is good, and the outside air can be locked to reduce dust falling.

Drawings

FIG. 1 is a schematic perspective front view of an embodiment of the present invention;

FIG. 2 is a schematic perspective rear view structure in an embodiment of the present invention;

FIG. 3 is a schematic view of a partially disassembled structure in an embodiment of the present invention;

FIG. 4 is a schematic bottom view of an embodiment of the present invention;

FIG. 5 is a partially disassembled structural schematic diagram in an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a fan ring casing according to an embodiment of the present invention;

FIG. 7 is a schematic bottom view of a fan ring casing according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a fan plate according to an embodiment of the present invention;

in fig. 1 to 8, the correspondence between the part names or lines and the reference numbers is:

1. a main channel; 101. an air outlet channel; 102. an exhaust net; 103. a top plate; 2. a front plate; 201. an air inlet; 202. An L-shaped chute; 203. a miniature electric cylinder; 204. sealing rows; 3. an air inlet seat A; 301. an exhaust duct; 302. assembling a seat hole; 4. an air inlet seat B; 5. a middle frame; 6. a motor; 7. a rear cover plate; 8. a cross bar; 801. a driven shaft; 802. a middle pedestal; 9. a fan ring housing; 901. a fan plate; 902. a shaft block; 903. pulling the block; 904. a sliding shaft; 10. a ring gear; 1001. a slider; 11. a connecting shaft; 12. a drive shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention includes: an energy-saving environment-friendly efficient air supply outlet structure comprises a main channel 1; the main channel 1 also comprises an air outlet channel 101, an exhaust net 102 and a top plate 103; an air outlet channel 101 is integrally arranged at the rear side of the main channel 1; the rear side of the air outlet channel 101 is fixedly provided with an exhaust net 102 through bolts; a top plate 103 is fixedly arranged at the top of the main channel 1, two groups of square holes are formed in the middle of the top plate 103, and cross rods 8 are fixedly arranged at the tops of the square holes through bolts; the front side of the main channel 1 is fixedly provided with a front plate 2 through bolts; the front plate 2 also comprises an air inlet 201 and an L-shaped chute 202; two rows of air inlets 201 are integrally arranged on the front side of the front plate 2, the air inlets 201 are of a protruding structure extending forwards, and the bottom of the front side of each air inlet 201 is of an opening structure; two groups of L-shaped sliding grooves 202 are fixedly arranged at the two ends of the front side of the front plate 2; wherein, the front plate 2 also comprises a micro electric cylinder 203 and a sealing row 204; a sealing row 204 is arranged in the L-shaped sliding groove 202 in a sliding mode, the sealing row 204 is of a grid structure, and the top surface of the sealing row 204 can be attached to the bottom surface of the sealed air inlet 201; the top of the front side of the front plate 2 is fixedly provided with a miniature electric cylinder 203, and the top telescopic end of the miniature electric cylinder 203 is fixedly connected with the sealing row 204; an air inlet seat A3 and an air inlet seat B4 are fixedly arranged on two sides of the top of the main channel 1; wherein, the air intake seat A3 also comprises an exhaust groove 301 and an assembly seat hole 302; the bottom of the air inlet seat A3 is provided with an exhaust groove 301, and the exhaust groove 301, the air outlet channel 101 and the square holes of the top plate 103 are aligned; an assembly seat hole 302 is formed in the top of the air inlet seat A3, and the assembly seat hole 302 is of a T-shaped structure; one end of the rear side of the air inlet seat A3 is provided with a notch structure; the air inlet seat A3 and the air inlet seat B4 are symmetrical structures, and a middle frame 5 is fixedly arranged in the rear side gap structures of the air inlet seat A3 and the air inlet seat B4 through bolts; the main body of the middle frame 5 is arranged into an H-shaped structure, and the two sides and the front end of the middle frame 5 are attached and sealed with the rear side gaps of the air inlet seat A3 and the air inlet seat B4; the top of the middle frame 5 is fixedly provided with a motor 6; the rear sides of the air inlet seat A3 and the air inlet seat B4 are of an open structure, and the rear sides of the air inlet seat A3 and the air inlet seat B4 are fixedly connected with a rear cover plate 7 through bolts; wherein, the cross bar 8 also comprises a driven shaft 801 and a middle pedestal 802; the middle of each cross rod 8 is rotatably provided with a driven shaft 801 through a tapered roller bearing, and the top of each driven shaft 801 is fixedly provided with a middle pedestal 802 through a bolt; a fan ring shell 9 is rotatably arranged on the outer side of the cross rod 8 through a tapered roller bearing; the fan ring casing 9 further includes a fan plate 901, a shaft block 902, a pull block 903, and a sliding shaft 904; ten groups of fan plates 901 are rotatably arranged between the inner side of the fan ring shell 9 and the middle pedestal 802 through an integrated rotating shaft, and the ten groups of fan plates 901 are all in a 36-degree fan-shaped structure; the top of the fan ring shell 9 is of a flange structure, and ten sets of shaft blocks 902 are integrally arranged at the bottom of the flange structure at equal intervals; the rotating shafts of the fan plate 901 penetrate through the outer end of the fan ring shell 9 and are rotatably connected with a group of shaft blocks 902; a pull block 903 is fixedly arranged at the outer end of the rotating shaft of the fan plate 901, and a sliding shaft 904 is fixedly arranged at the outer side of the other end of the pull block 903; the outer side of the top of the fan ring shell 9 is provided with a dust screen; the ring gear 10 is rotatably provided on the outer side of the driven shaft 801 by a tapered roller bearing.

The gear ring 10 further comprises a slider 1001; ten groups of sliding blocks 1001 are integrally arranged at the top of the gear ring 10, and sliding grooves are formed in the inner sides of the sliding blocks 1001; the sliding shafts 904 are arranged in the slider 1001 in a sliding mode, and the sliding shafts 904 are located at the bottom end of the inner side of the slider 1001 while the ten groups of fan plates 901 are combined; when the sliding shaft 904 is located at the top of the inner side of the sliding block 1001, the ten groups of fan plates 901 are unfolded by 30 degrees, and the sliding block 1001 can be used for driving the fan plates 901 to be unfolded in the rotating process by the aid of the gear ring 10.

Wherein, two groups of transmission shafts 12 are rotatably arranged at two sides of the bottom of the middle frame 5 through bearings, and the two groups of transmission shafts 12 are in transmission connection with the motor 6 through bevel gears; the rear ends of the inner sides of the air inlet seat A3 and the air inlet seat B4 are respectively provided with a connecting shaft 11, and the bottom of the connecting shaft 11 is provided with a bevel gear which is in transmission connection with a transmission shaft 12; the outside of ring gear 10 sets up to gear structure, and the outside of connecting axle 11 is fixed to be set up the gear and is connected with the gear structure meshing transmission in the ring gear 10 outside, sets up transmission shaft 12 and provides convenient transmission effect for ring gear 10.

The working principle is as follows: during the use, utilize air inlet 201 can keep natural draft, connect external natural wind with fan ring shell 9, guarantee can not lead to indoor air current confusion at the in-process of mechanical air supply, when needs accelerate wind-force transport, can start miniature electronic jar 203, further lift up behind the miniature electronic jar 203 rise and seal row 204, seal the bottom of the grid structure laminating air inlet 201 of row 204, seal the bottom of air inlet 201, prevent indoor natural wind to flow.

Further, the motor 6 is started, the motor 6 drives the transmission shaft 12 to rotate through the bevel gear, the transmission shaft 12 drives the connecting shaft 11 to rotate through the bevel gear, the connecting shaft 11 drives the gear ring 10 to rotate through the gear, the gear ring 10 drives the sliding block 1001 to rotate, the sliding block 1001 drives the sliding shaft 904 to rotate while the gear ring 10 rotates, the sliding shaft 904 drives the pulling block 903 to rotate, the sliding shaft 904 rises when the pulling block 903 rotates to drive the shaft block 902 to lift, and the fan plate 901 is unfolded for 30 degrees; during the further rotation, the fan plate 901 will act as a power source to draw the outside air into the outlet channel 101, and pass through the exhaust network 102 to the place where the air needs to be replaced quickly. After the ring gear 10 stops rotating, the shaft block 902 moves downward within the slide shaft 904, and the fan plate 901 is restored to the original position by inertia and gravity.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a based on energy-concerving and environment-protective high-efficient supply-air outlet structure which characterized in that: comprising a main channel (1); the main channel (1) also comprises an air outlet channel (101), an exhaust net (102) and a top plate (103); an air outlet channel (101) is integrally arranged at the rear side of the main channel (1); an exhaust net (102) is fixedly arranged at the rear side of the air outlet channel (101) through bolts; a top plate (103) is fixedly arranged at the top of the main channel (1), two groups of square holes are formed in the middle of the top plate (103), and cross rods (8) are fixedly arranged at the tops of the square holes through bolts; a front plate (2) is fixedly arranged on the front side of the main channel (1) through bolts; the front plate (2) also comprises an air inlet (201) and an L-shaped sliding chute (202); two rows of air inlets (201) are integrally arranged on the front side of the front plate (2), the air inlets (201) are of a protruding structure extending forwards, and the bottom of the front side of each air inlet (201) is of an opening structure; two groups of L-shaped sliding grooves (202) are fixedly arranged at two ends of the front side of the front plate (2); an air inlet seat A (3) and an air inlet seat B (4) are fixedly arranged on two sides of the top of the main channel (1); the front plate (2) also comprises a miniature electric cylinder (203) and a sealing row (204); a sealing row (204) is arranged in the L-shaped sliding groove (202) in a sliding mode, the sealing row (204) is of a grid structure, and the top surface of the sealing row (204) can be attached to the bottom surface of the air inlet (201) in a sealing mode; the top of the front side of the front plate (2) is fixedly provided with a miniature electric cylinder (203), and the top telescopic end of the miniature electric cylinder (203) is fixedly connected with the sealing row (204); the air inlet seat A (3) also comprises an air exhaust groove (301) and an assembling seat hole (302); an air exhaust groove (301) is formed in the bottom of the air inlet seat A (3), and square holes of the air exhaust groove (301), the air outlet channel (101) and the top plate (103) are aligned; an assembling seat hole (302) is formed in the top of the air inlet seat A (3), and the assembling seat hole (302) is of a T-shaped structure; one end of the rear side of the air inlet seat A (3) is provided with a notch structure; the cross rod (8) further comprises a driven shaft (801) and a middle pedestal (802); driven shafts (801) are rotatably arranged in the middle of the cross rods (8) through tapered roller bearings, and middle pedestals (802) are fixedly arranged at the tops of the driven shafts (801) through bolts; a fan ring shell (9) is rotatably arranged on the outer side of the cross rod (8) through a tapered roller bearing; a gear ring (10) is rotatably provided on the outer side of the driven shaft (801) via a tapered roller bearing.

2. The energy-saving environment-friendly efficient air supply outlet structure based on the claim 1 is characterized in that: the air inlet seat A (3) and the air inlet seat B (4) are of symmetrical structures, and a middle frame (5) is fixedly arranged in a gap structure at the rear side of the air inlet seat A (3) and the air inlet seat B (4) through bolts; the main body of the middle frame (5) is arranged into an H-shaped structure, and the two sides and the front end of the middle frame (5) are attached and sealed with the rear side gaps of the air inlet seat A (3) and the air inlet seat B (4); the top of the middle frame (5) is fixedly provided with a motor (6); the rear sides of the air inlet seat A (3) and the air inlet seat B (4) are of an open structure, and the rear sides of the air inlet seat A (3) and the air inlet seat B (4) are fixedly connected with a rear cover plate (7) through bolts.

3. The energy-saving environment-friendly efficient air supply outlet structure based on the claim 1 is characterized in that: the fan ring shell (9) further comprises a fan plate (901), a shaft block (902), a pull block (903) and a sliding shaft (904); ten groups of fan plates (901) are rotatably arranged between the inner side of the fan ring shell (9) and the middle pedestal (802) through an integrated rotating shaft, and the ten groups of fan plates (901) are all in a 36-degree fan-shaped structure; the top of the fan ring shell (9) is of a flange structure, and ten sets of shaft blocks (902) are integrally arranged at the bottom of the flange structure at equal intervals; the rotating shafts of the fan plates (901) penetrate through the outer end of the fan ring shell (9) and are rotatably connected with a group of shaft blocks (902); a pull block (903) is fixedly arranged at the outer end of the rotating shaft of the fan plate (901), and a sliding shaft (904) is fixedly arranged at the outer side of the other end of the pull block (903); the outer side of the top of the fan ring shell (9) is provided with a dust screen.

4. The energy-saving environment-friendly efficient air supply outlet structure based on the claim 1 is characterized in that: the gear ring (10) further comprises a sliding block (1001); ten groups of sliding blocks (1001) are integrally arranged at the top of the gear ring (10), and sliding grooves are formed in the inner sides of the sliding blocks (1001); the sliding shafts (904) are arranged in the sliding block (1001) in a sliding mode, and the sliding shafts (904) are located at the bottom end of the inner side of the sliding block (1001) when the ten groups of fan plates (901) are combined; when the sliding shaft (904) is positioned at the top of the inner side of the sliding block (1001), the ten groups of fan plates (901) are unfolded by 30 degrees.

5. The energy-saving environment-friendly efficient air supply outlet structure based on the claim 2 is characterized in that: two groups of transmission shafts (12) are rotatably arranged on two sides of the bottom of the middle frame (5) through bearings, and the two groups of transmission shafts (12) are in transmission connection with a motor (6) through bevel gears; the rear ends of the inner sides of the air inlet seat A (3) and the air inlet seat B (4) are respectively provided with a connecting shaft (11), and the bottom of the connecting shaft (11) is provided with a bevel gear which is in transmission connection with a transmission shaft (12); the outer side of the gear ring (10) is provided with a gear structure, and the outer side of the connecting shaft (11) is fixedly provided with a gear which is in meshed transmission connection with the gear structure on the outer side of the gear ring (10).