CN220850126U - Impeller structure of centrifugal ventilator - Google Patents

Abstract

The utility model belongs to the technical field of centrifugal ventilators, and particularly relates to a centrifugal ventilator impeller structure, which comprises a front disc, a middle disc, a rear disc, hubs and blades, wherein the middle disc is fixedly arranged between two adjacent blades, a plurality of middle discs are arranged between the two blades at intervals, the middle disc is arranged into an arc shape along the air flow entering direction, and at least one reinforcing rib is fixedly arranged at the connecting position of the blades and the middle disc; compared with the prior art, the utility model has the beneficial technical effects that: (1) The middle disc is arranged in an arc shape along the air flow entering direction, so that the flow resistance of the air is fully reduced, and the in-way resistance loss and the vortex loss of the air flowing at the middle disc position are reduced as far as possible; (2) Through the well disc that the interval set up, under the circumstances of guaranteeing to satisfy blade intensity, reduced the work load of impeller well disc in welding process, reduced the processing degree of difficulty, saved processing man-hour, the strengthening rib increases the stability when blade is operated, has reduced vibrations and noise.

Description

Impeller structure of centrifugal ventilator

Technical Field

The utility model belongs to the technical field of centrifugal ventilators, and particularly relates to a centrifugal ventilator impeller structure.

Background

The centrifugal ventilator belongs to one of impeller machines, is widely applied to various fields of energy sources, environment, aviation and the like, and is one of main energy consumption equipment in industrial and agricultural production. The centrifugal ventilator mainly comprises a casing, an impeller, a shaft, a collector, a base and other parts, and negative pressure is formed in the fan by means of rotation of the impeller, so that external air is sucked into the fan and discharged out of the fan through an impeller runner and a volute.

The centrifugal ventilator impeller generally comprises a front disc, a rear disc, a hub and a plurality of blades, wherein a middle disc is additionally arranged when the width of the existing centrifugal ventilator impeller is relatively large, most of the middle discs of the existing impeller are inserted into the middle of the blades at a horizontal angle by a plurality of blocky middle discs, the existing impeller is welded into a whole circular ring, the welding engineering quantity is large, the gas flow field in the impeller can be influenced, certain along-way resistance loss is caused, and the fan efficiency is reduced.

Disclosure of utility model

The utility model provides a centrifugal ventilator impeller structure aiming at the problems that the welding engineering quantity of the centrifugal ventilator impeller is large and a middle disc can influence a gas flow field in the impeller.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a centrifugal fan impeller structure includes front disc, well disc, rear disc, wheel hub and blade, even fixedly connected with a plurality of blades between rear disc and the front disc, well disc fixed connection is between two adjacent blades, and a plurality of interval sets up between the well disc, well disc sets up to the arc along the air current entering direction, the blade with well disc hookup location is fixed to be equipped with at least one strengthening rib.

Preferably, two reinforcing ribs are fixedly arranged at the connection position of the blade and the middle disc, and the reinforcing ribs are triangular.

Preferably, the axle center of the rear disc is fixedly connected with a hub, the hub is provided with a sound-absorbing ring groove, and sound-absorbing cotton is fixedly arranged in the sound-absorbing ring groove.

Preferably, the blades are curved in a direction inclined to the radial direction of the hub.

Preferably, the thickness of the blade gradually decreases from inside to outside.

Preferably, the surface of the blade is fixedly provided with a wear-resistant composite layer.

Preferably, the front plate is an annular plate concentric with the hub.

Compared with the prior art, the utility model has the advantages and positive effects that:

Compared with the prior art, the impeller structure of the centrifugal ventilator of the utility model,

(1) The middle disc is arranged in an arc shape along the air flow entering direction, so that the flow resistance of the air is fully reduced, and the in-way resistance loss and the vortex loss of the air flowing at the middle disc position are reduced as far as possible;

(2) Through the well disc that the position interval set up between two adjacent blades, under the circumstances of guaranteeing to satisfy blade intensity, reduced the work load of impeller well disc in welding process, reduced the processing degree of difficulty, saved processing man-hour, the strengthening rib that the junction set up simultaneously, stability when increasing blade operation has reduced vibrations and noise.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the following description of the embodiments will briefly describe the drawings that are required to be used in the description:

Figure 1 is a schematic perspective view of the impeller structure of a centrifugal ventilator,

Figure 2 is a top view of the impeller structure of the centrifugal ventilator,

Figure 3 is a schematic view of the structure of the reinforcing rib of the impeller of the centrifugal ventilator,

Figure 4 is a schematic diagram of a hub structure of a centrifugal ventilator impeller,

Fig. 5 is a schematic longitudinal section of the impeller structure of the centrifugal fan.

Reference numerals illustrate:

1. a front plate; 2. a middle disc; 3. a rear tray; 4. a hub; 5. a blade; 6. reinforcing ribs; 7. sound-absorbing ring groove.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Example 1

The utility model is further described below with reference to fig. 1-5, which are improvements over prior art CN 207814037U. The utility model provides a centrifugal fan impeller structure includes preceding dish 1, well disc 2, back dish 3, wheel hub 4 and blade 5, evenly fixed connection a plurality of blades 5 between back dish 3 and the preceding dish 1, well disc 2 fixed connection is between two adjacent blades 5, and the interval sets up between a plurality of well discs 2, and well disc 2 sets up to the arc along the air current entering direction, and blade 5 and well disc 2 hookup location are fixed and are equipped with at least one strengthening rib 6.

As shown in fig. 3, two reinforcing ribs 6 are fixedly arranged at the connection position of the blade 5 and the middle disc 2, and the reinforcing ribs 6 are triangular.

As shown in fig. 2 and 4, the axle center of the rear disc 3 is fixedly connected with the hub 4, the hub 4 is provided with a sound-absorbing ring groove 7, and sound-absorbing cotton is fixedly arranged in the sound-absorbing ring groove 7.

As shown in fig. 2, the blades 5 are curved in a direction inclined to the radial direction of the hub 4.

As shown in fig. 3, the thickness of the vane 5 gradually decreases from inside to outside.

The surface of the blade 5 is provided with a wear-resistant composite layer, not shown in the figures.

As shown in fig. 1, the front plate 1 has an annular disk shape concentric with the hub 4.

The utility model relates to a centrifugal ventilator impeller structure working principle: when the centrifugal fan works, the structural strength is ensured by the middle disc 2 arranged between two adjacent blades 5, the impeller is ensured to deform slightly at the middle disc position under the action of centrifugal force, and the middle disc 2 is arranged in an arc shape along the air flow entering direction, so that the flow resistance of air is fully reduced, and the in-way resistance loss and vortex loss of air flowing at the middle disc position are reduced; the middle disks 2 are arranged at intervals, so that the workload in the process of welding the middle disks of the impeller is reduced, the processing difficulty is reduced, and the processing time is saved under the condition that the strength of the blades 5 is ensured; and meanwhile, the reinforcing ribs 6 are arranged at the joint, so that the stability of the blade 5 during operation is improved, and vibration and noise are reduced.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification and equivalent changes to the above-mentioned embodiments according to the technical substance of the present utility model are still within the protection scope of the technical solution of the present utility model.

Claims (7)

1. The utility model provides a centrifugal fan impeller structure, its characterized in that includes preceding dish (1), well disc (2), back dish (3), wheel hub (4) and blade (5), evenly a plurality of blades (5) of fixed connection between back dish (3) and the preceding dish (1), well disc (2) fixed connection is between two adjacent blades (5), and a plurality of interval sets up between well disc (2), well disc (2) are along the air current entering direction setting to the arc, blade (5) with well disc (2) hookup location is fixed and is equipped with at least one strengthening rib (6).

2. The impeller structure of the centrifugal fan according to claim 1, wherein two reinforcing ribs (6) are fixedly arranged at the connecting position of the blades (5) and the middle disc (2), and the reinforcing ribs (6) are triangular.

3. The impeller structure of the centrifugal ventilator according to claim 1, wherein the axle center of the rear disc (3) is fixedly connected with the hub (4), the hub (4) is provided with a sound-absorbing ring groove (7), and sound-absorbing cotton is fixedly arranged in the sound-absorbing ring groove (7).

4. A centrifugal fan impeller structure according to claim 1, wherein the blades (5) are arc-shaped inclined radially to the hub (4).

5. Centrifugal fan impeller structure according to claim 4, wherein the thickness of the blades (5) decreases gradually from inside to outside.

6. Centrifugal fan impeller structure according to claim 5, characterized in that the surface of the blade (5) is fixedly provided with a wear-resistant composite layer.

7. Centrifugal fan impeller structure according to claim 1, wherein the front disc (1) is annular disc-shaped concentric with the hub (4).