CN213392841U

CN213392841U - Combined impeller of centrifugal fan

Info

Publication number: CN213392841U
Application number: CN202021810097.XU
Authority: CN
Inventors: 朱青; 王俊豪; 粘素环; 周宏伟
Original assignee: Fengfengjia Fan Shanghai Co ltd
Current assignee: Fengfengjia Fan Shanghai Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-06-08
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a combined impeller of a centrifugal fan, which relates to the field of combined impellers, and provides the following proposal aiming at the problems that the combined impeller for the existing centrifugal fan can not be disassembled and assembled and adjusted and the application range and the environment are limited, which comprises a motor, a shell, a cover plate, an air inlet arranged on the shell, a rear cover plate fixedly connected with the output end of the motor, the front side surface of the rear cover plate is fixedly connected with a positioning column, the front side of the positioning column is provided with a front cover plate, a positioning bolt is arranged between the front cover plate and the positioning column, the rear end face of back shroud fixedly connected with round platform, fixed mounting is followed to the side of back shroud has the constant head tank, every all be provided with the base in the constant head tank, every the preceding terminal surface of base all rotates the first gear of rear side fixedly connected with that is connected with blade and round pin axle through the round pin axle, the fixedly connected with connecting rod of output of motor and motor in the round platform. The device has the characteristics of convenient adjustment and use, and capability of changing the types and adjusting different air exhaust amounts in the use environment.

Description

Combined impeller of centrifugal fan

Technical Field

The utility model relates to a modular impeller field especially relates to centrifugal fan modular impeller.

Background

The blade shape of the centrifugal fan impeller includes a single plate type, an arc type, a wing type and the like. The airfoil type blade has good aerodynamic characteristics, high efficiency, good strength and high rigidity. The disadvantage is that the manufacturing process is complicated, and when gas with high dust concentration is conveyed, the blades are easy to wear, and after the blades are worn, impurities enter the interior of the blades, so that the impeller loses balance and generates vibration. The flat plate straight blade is simple to manufacture, but the flow characteristic is poor, and compared with an airfoil blade, the efficiency of the flat plate curve backward blade is quite close to that of other working points except that the efficiency near the highest efficiency point is low.

And it is divided into closed impeller, semi-open impeller, open impeller again in centrifugal fan's ventilation unit field at present, because the difference of configuration also can cause suitable environment and classification difference, and to centrifugal fan general multi-purpose closed impeller, but current closed impeller dismantlement that generally can not be nimble is adjusted, can not carry out the switching of kind, and the angle of blade is not adjustable, and the blade that can adjust can be applicable to the environment and the efficiency that multiple air current, atmospheric pressure and specific operation required. Thus, a centrifugal fan combined impeller is proposed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a combined impeller of centrifugal fan has solved current combined impeller for centrifugal fan and can not dismouting adjust, the limited problem of application range and environment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the centrifugal fan combined impeller comprises a motor, a shell, a cover plate, an air inlet arranged on the shell, the output end of the motor is fixedly connected with a rear cover plate, the front side surface of the rear cover plate is fixedly connected with a positioning column, a front cover plate is arranged at the front side of the positioning column, a positioning bolt is arranged between the front cover plate and the positioning column, the rear end surface of the rear cover plate is fixedly connected with a round table, the side edge of the rear cover plate is fixedly provided with positioning grooves, a base is arranged in each positioning groove, the front end surface of each base is rotatably connected with a blade through a pin shaft, the rear side of the pin shaft is fixedly connected with a first gear, a motor is fixedly arranged in the circular truncated cone, the output end of the motor is fixedly connected with a connecting rod, each connecting rod is fixedly connected with a ring gear, the annular gear is meshed with the first gear, and the rear side face of the circular truncated cone is fixedly connected with a positioning seat.

Preferably, the front side face and the rear side face of the shell are both connected with cover plates through bolts, the output end of the motor extends into the shell, and the extending end of the motor is fixedly connected to the positioning seat on the rear side face of the rear cover plate.

Preferably, the constant head tank array sets up the trailing flank at the back shroud, the base slides and sets up in the constant head tank and through positioning bolt and constant head tank fixed connection.

Preferably, the front end and the rear end of the pin shaft respectively penetrate through the front side surface and the rear side surface of the base, and the rear side of the pin shaft penetrates through the positioning groove and extends to the rear side of the base.

Preferably, the rear end of the positioning bolt penetrates through the cover plate on the front side to be in threaded connection with the positioning column.

Preferably, the outer side surface of the output end of the motor is fixedly connected with a connecting rod, the connecting rod is parallel to the rear side surface of the circular truncated cone, and one side, far away from the output end of the motor, of the connecting rod is fixedly connected to the ring gear.

Compared with the prior art, the beneficial effects of the utility model are that:

through the motor, a machine shell, the apron, the air intake, the back shroud, the reference column, the front shroud, positioning bolt, the round platform, the constant head tank, a pedestal, the second blade, first gear, the connecting rod, ring gear, the positioning seat, make this device can be through the dismantlement of positioning bolt nimble take off the front shroud, conveniently carry out the closed impeller, switching between the semi-open impeller, can drive connecting rod and ring gear through the motor simultaneously and rotate, because ring gear is connected with first gear engagement and then can drive round pin axle and blade rotation through the rotation of first gear, carry out and can make things convenient for and form different angles between each blade, conveniently change the efficiency of air-out and be applicable to the environment of using.

The device has the characteristics of convenient adjustment and use, and different air exhaust amounts can be adjusted by changing the types and the use environment.

Drawings

Fig. 1 is a front view of the combined impeller of the centrifugal fan of the present invention.

Fig. 2 is a sectional view of a side view structure of the centrifugal fan combined impeller of the present invention.

Fig. 3 is a sectional view of a side view structure of an impeller of the centrifugal fan combined impeller of the present invention.

Fig. 4 is a sectional view showing an impeller front view structure of the centrifugal fan combined impeller of the present invention.

Fig. 5 is a rear view of the impeller of the centrifugal fan combined impeller of the present invention.

Reference numbers in the figures: the device comprises a motor 1, a machine shell 2, a cover plate 3, an air inlet 4, a rear cover plate 5, a positioning column 6, a front cover plate 7, a positioning bolt 8, a circular truncated cone 9, a positioning groove 10, a base 11, a first blade 12, a first gear 13, a connecting rod 14, a ring gear 15 and a positioning seat 16.

Detailed Description

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

Referring to fig. 1-5, a centrifugal fan combined impeller comprises a motor 1, a casing 2, a cover plate 3, an air inlet 4 arranged on the casing 2, a rear cover plate 5 fixedly connected to an output end of the motor 1, a positioning column 6 fixedly connected to a front side surface of the rear cover plate 5, a front cover plate 7 arranged on a front side of the positioning column 6, a positioning bolt 8 arranged between the front cover plate 7 and the positioning column 6, a circular table 9 fixedly connected to a rear end surface of the rear cover plate 5, positioning grooves 10 fixedly arranged along a side edge of the rear cover plate 5, a base 11 arranged in each positioning groove 10, a blade 12 rotatably connected to a front end surface of each base 11 through a pin shaft, a first gear 13 fixedly connected to a rear side of the pin shaft, a motor fixedly arranged in the circular table 9, a connecting rod 14 fixedly connected to an output end of the motor, a ring gear 15 fixedly connected to each, the rear side surface of the circular truncated cone 9 is fixedly connected with a positioning seat 16.

In this embodiment, the front and rear sides of the casing 2 are bolted to the cover plates 3, and the output end of the motor 1 extends into the casing 2 and is fixedly connected to the positioning seats 16 on the rear side of the rear cover plate 5.

In this embodiment, the array of positioning grooves 10 is arranged on the rear side surface of the rear cover plate 5, the base 11 is slidably arranged in the positioning grooves 10 and is fixedly connected with the positioning grooves 10 through positioning bolts, and the positioning grooves 10 are arranged along the radial direction of the rear cover plate 5.

In this embodiment, the front and rear ends of the pin shaft respectively pass through the front and rear side surfaces of the base 11, and the rear side passes through the positioning slot 10 and extends to the rear side thereof.

In the present embodiment, the rear end of the positioning bolt 8 is screwed to the positioning column 6 through the cover plate 7 on the front side.

In this embodiment, the outer side surfaces of the output end of the motor are fixedly connected with a connecting rod 14, the connecting rod 14 is arranged in parallel with the rear side surface of the circular truncated cone 9, and one side, far away from the output end of the motor, of the connecting rod 14 is fixedly connected to the ring gear 15.

The working principle is as follows: when using, can take off front shroud 7 through the dismantlement flexibility of positioning bolt 8, conveniently carry out the closed impeller, switching between the semi-open impeller, can drive connecting rod 14 through the motor simultaneously and rotate, because connecting rod 14 and ring gear 15 fixed connection, and then ring gear 15 rotates, because ring gear 15 is connected and then can drive the round pin axle through the rotation of first gear 13 with the meshing of first gear 13 and rotate, because the front end of round pin axle extends at the front side of base 11 and constant head tank 10 and extends fixedly connected with blade 12, and then the blade 12 of every bottom plate 11 front side of regulation that can be synchronous rotates, carry out and can make things convenient for and form different angles between each blade 12, conveniently change the efficiency of air-out and be applicable to the environment of using.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The centrifugal fan combined impeller comprises a motor (1), a casing (2), a cover plate (3) and an air inlet (4) arranged on the casing (2), and is characterized in that the output end of the motor (1) is fixedly connected with a rear cover plate (5), the front side surface of the rear cover plate (5) is fixedly connected with a positioning column (6), the front side of the positioning column (6) is provided with a front cover plate (7), a positioning bolt (8) is arranged between the front cover plate (7) and the positioning column (6), the rear end surface of the rear cover plate (5) is fixedly connected with a round table (9), the side edge of the rear cover plate (5) is fixedly provided with positioning grooves (10), each positioning groove (10) is internally provided with a base (11), the front end surface of each base (11) is rotatably connected with a blade (12) through a pin shaft, and the rear side of the pin shaft is fixedly connected with a, fixedly connected with connecting rod (14), every of output fixedly connected with connecting rod (14) of motor and motor in round platform (9) equal fixedly connected with ring gear (15) on connecting rod (14), ring gear (15) are connected with first gear (13) meshing, the trailing flank fixedly connected with positioning seat (16) of round platform (9).

2. The combined impeller of the centrifugal fan as claimed in claim 1, wherein the front and rear sides of the casing (2) are bolted with cover plates (3), the output end of the electric motor (1) extends into the casing (2) and the extended end is fixedly connected to positioning seats (16) on the rear side of the rear cover plate (5).

3. The combined impeller of the centrifugal fan as claimed in claim 1, wherein the array of positioning slots (10) is arranged on the rear side of the rear cover plate (5), and the base (11) is slidably arranged in the positioning slots (10) and is fixedly connected with the positioning slots (10) through positioning bolts.

4. The combined impeller of the centrifugal fan as claimed in claim 1, wherein the front and rear ends of the pin shaft respectively penetrate through the front and rear sides of the base (11) and the rear side of the pin shaft extends through the positioning groove (10) to the rear side of the base.

5. The combined impeller of the centrifugal fan as claimed in claim 1, wherein the rear end of the positioning bolt (8) passes through the front cover plate (3) and is screwed to the positioning column (6).

6. The combined impeller of the centrifugal fan as claimed in claim 1, wherein the outer side faces of the output end of the motor are fixedly connected with connecting rods (14), the connecting rods (14) are arranged in parallel with the rear side face of the circular truncated cone (9), and one side, far away from the output end of the motor, of each connecting rod (14) is fixedly connected to the ring gear (15).