CN220687664U

CN220687664U - Adjustable impeller structure of centrifugal pneumatic conveying fan

Info

Publication number: CN220687664U
Application number: CN202322428811.9U
Authority: CN
Inventors: 牛玉升; 张付栋; 杨贵强
Original assignee: Shandong Longcheng Pneumatic Conveying Engineering Equipment Co ltd
Current assignee: Shandong Longcheng Pneumatic Conveying Engineering Equipment Co ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-03-29
Anticipated expiration: 2033-09-07

Abstract

The utility model relates to the technical field of fans, in particular to an adjustable impeller structure of a centrifugal pneumatic conveying fan, which comprises the following technical scheme: the blade, limiting plate, fixed disk and bolt, nine spacing grooves have been seted up to the fixed disk be annular array, nine the blade bottom has welded the stopper respectively, nine the stopper inserts nine spacing inslot portion respectively, the helicoidal groove has been seted up to the fixed disk rear end, the round hole begins in the middle of the limiting plate, the bolt passes the round hole and is connected with the helicoidal groove meshing. The utility model has the advantages of facilitating the installation and the disassembly of the blades by workers and adjusting the number of the blades installed on the fixed disc.

Description

Adjustable impeller structure of centrifugal pneumatic conveying fan

Technical Field

The utility model relates to the technical field of fans, in particular to an adjustable impeller structure of a centrifugal pneumatic conveying fan.

Background

The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, is a driven fluid machine, and is widely used for ventilation, dust discharge and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc.

The centrifugal fan is rotated through driving the blade and is carried the air, according to different task demands, needs to correspond the blade quantity of adjustment centrifugal fan, and current centrifugal fan blade is fixed through a plurality of structure installations such as bolt, buckle, when carrying out adjustment quantity operation, comparatively loaded down with trivial details.

Disclosure of Invention

The utility model aims to provide an adjustable impeller structure of a centrifugal pneumatic conveying fan, which has the advantages of facilitating the installation and the disassembly of blades by workers and adjusting the number of the blades installed on a fixed disc, and solves the problem of troublesome operation for adjusting the number of the blades of the centrifugal fan.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an adjustable impeller structure of centrifugal pneumatic conveying fan, includes blade, limiting plate, fixed disk and bolt, nine spacing grooves have been seted up to the fixed disk be annular array, nine the blade bottom has welded the stopper respectively, nine the stopper inserts nine spacing inslot portion respectively, the helicoidal groove has been seted up to the fixed disk rear end, the round hole has been started in the middle of the limiting plate, the bolt passes the round hole and is connected with the helicoidal groove meshing.

When the centrifugal pneumatic conveying fan adjustable impeller structure in the technical scheme is used, the limiting blocks at the bottoms of the nine blades are respectively inserted into the nine limiting grooves of the fixed disc, the front ends of the limiting plates are combined with the rear ends of the fixed disc, bolts penetrate through round holes of the limiting plates to be meshed with the spiral grooves of the fixed disc, the limiting plates tightly support and fix the limiting blocks in the limiting grooves, when the number of the blades needs to be adjusted, the bolts are screwed out from the spiral grooves by using the hand wheel, the limiting plates are separated from the fixed disc, the number of the blades can be adjusted, and tools such as screws are used to fixedly connect the fixed shaft with the driving structure through the fixing holes.

Preferably, the front end of the fixed disc is provided with a fixed shaft, and the fixed shaft is provided with fixed holes in an annular array. The fixed shaft is fixedly connected with the driving structure through the fixing hole by using tools such as a screw rod and the like.

Preferably, a hand wheel is welded at the rear end of the bolt, and the hand wheel is parallel to the front end of the limiting plate. The hand wheel is used for conveniently rotating the bolt.

Preferably, the front end of the limiting plate is parallel to the rear end of the fixed disc, and the front end of the limiting plate is provided with a sealing gasket. The sealing gasket reduces the gap between the fixed disk and the limiting plate.

Preferably, nine limit grooves penetrate through the rear end of the fixed disc. The limiting block is conveniently inserted into the limiting groove by a worker and taken out from the limiting groove by the worker.

Preferably, a distance is reserved among the nine limiting grooves. After the limiting blocks at the bottoms of the nine blades are inserted into the nine limiting grooves, the nine blades cannot interfere with each other.

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

according to the utility model, through arranging the bolts, the limiting plates and the hand wheels, limiting blocks at the bottoms of the nine blades are respectively inserted into the nine limiting grooves of the fixed disc, the front ends of the limiting plates are combined with the rear ends of the fixed disc, the bolts penetrate through round holes of the limiting plates to be meshed and connected with the screw grooves of the fixed disc, the limiting plates tightly support and fix the limiting blocks in the limiting grooves, when the number of the blades is required to be regulated, the bolts are screwed out from the screw grooves by using the hand wheels, the limiting plates are separated from the fixed disc, so that the number of the blades can be regulated, and the effects of facilitating the installation and the disassembly of the blades by workers and regulating the number of the blades installed on the fixed disc are achieved.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic elevational cross-sectional view of the present utility model;

fig. 3 is a schematic cross-sectional view of the present utility model.

In the figure: 1. a blade; 2. a limiting plate; 3. a hand wheel; 4. a limiting block; 5. a fixed plate; 6. a screw groove; 7. a limit groove; 8. a fixed shaft; 9. a bolt; 10. a round hole; 11. and a sealing gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1-3, the adjustable impeller structure of the centrifugal pneumatic conveying fan provided by the utility model comprises blades 1, a limiting plate 2, a fixed disc 5 and bolts 9, wherein the fixed disc 5 is provided with nine limiting grooves 7 in an annular array, the nine limiting grooves 7 penetrate through the rear end of the fixed disc 5, a distance is reserved between the nine limiting grooves 7, limiting blocks 4 are respectively welded at the bottoms of the nine blades 1, the nine limiting blocks 4 are respectively inserted into the nine limiting grooves 7, the rear end of the fixed disc 5 is provided with a spiral groove 6, a round hole 10 is formed in the middle of the limiting plate 2, the bolts 9 penetrate through the round hole 10 and are in meshed connection with the spiral groove 6, the rear end of each bolt 9 is welded with a hand wheel 3, the hand wheel 3 is parallel to the front end of the limiting plate 2, a fixed shaft 8 is arranged at the front end of the fixed disc 5, and the fixed shaft 8 is provided with a fixing hole in an annular array.

In this embodiment, through inserting the stopper 4 of nine blade 1 bottoms respectively inside nine spacing grooves 7 of fixed disk 5, close limiting plate 2 front end and fixed disk 5 rear end together, pass the round hole 10 of limiting plate 2 with bolt 9 and the helicoidal groove 6 meshing of fixed disk 5 and be connected, limiting plate 2 supports the stopper 4 and fixes in spacing groove 7 inside, when needing the quantity of adjusting blade 1, use hand wheel 3 to unscrew bolt 9 from helicoidal groove 6 inside, separate limiting plate 2 and fixed disk 5, just can adjust the quantity of blade 1, use instrument such as screw rod, drive structure fixed connection with fixed axle 8 and fan through the fixed orifices.

Example two

As shown in fig. 1-3, the adjustable impeller structure of the centrifugal pneumatic conveying fan according to the present utility model further includes, compared with the first embodiment: the sealing gasket 11, the front end of the limiting plate 2 is parallel to the rear end of the fixed disc 5, and the sealing gasket 11 is arranged at the front end of the limiting plate 2.

In this embodiment, the gap between the limiting plate 2 and the fixed disk 5 is reduced by the gasket 11.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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. Adjustable impeller structure of centrifugal air conveying fan, including blade (1), limiting plate (2), fixed disk (5) and bolt (9), its characterized in that: nine limiting grooves (7) are formed in the mode that the fixing plate (5) is in an annular array, limiting blocks (4) are welded at the bottoms of the blades (1) respectively, the limiting blocks (4) are inserted into the limiting grooves (7) respectively, screw grooves (6) are formed in the rear end of the fixing plate (5), round holes (10) are formed in the middle of the limiting plate (2), and bolts (9) penetrate through the round holes (10) and are connected with the screw grooves (6) in a meshed mode.

2. The adjustable impeller structure of a centrifugal pneumatic conveying fan according to claim 1, wherein: the front end of the fixed disc (5) is provided with a fixed shaft (8), and the fixed shaft (8) is provided with fixed holes in an annular array.

3. The adjustable impeller structure of a centrifugal pneumatic conveying fan according to claim 1, wherein: the rear end of the bolt (9) is welded with a hand wheel (3), and the hand wheel (3) is parallel to the front end of the limiting plate (2).

4. The adjustable impeller structure of a centrifugal pneumatic conveying fan according to claim 1, wherein: the front end of the limiting plate (2) is parallel to the rear end of the fixed disc (5), and a sealing gasket (11) is arranged at the front end of the limiting plate (2).

5. The adjustable impeller structure of a centrifugal pneumatic conveying fan according to claim 1, wherein: the nine limit grooves (7) penetrate through the rear end of the fixed disc (5).

6. The adjustable impeller structure of a centrifugal pneumatic conveying fan according to claim 1, wherein: and a distance is reserved among the nine limiting grooves (7).