CN208619409U - A kind of connecting structure of double air intake centrifugal wind wheel blades and plate - Google Patents

Abstract

A kind of connecting structure of double air intake centrifugal wind wheel blades and plate, upper retaining ring (1) including annular, lower retaining ring (2), several arc-shaped blades (3) and arc-shaped mid-game (4), axle sleeve (5) are fixed in mid-game (4), the both ends distribution of the blade (3) is fixed on retaining ring (1) and lower retaining ring (2), an arc-shaped slot is formed on the outer ring of mid-game (4), blade (3) is plugged in the slot of mid-game (4), it is characterized by: the outer side edges of blade (3) form card slot (31), mid-game (4) holding is in the card slot (31) of blade (3).This centrifugal wind wheel connecting structure can eliminate the radial and axial gap between wind wheel blade and plate, and bond strength is high after the two is coupled, and can bear higher revolving speed compared to traditional centrifugal wind wheel, and can improve air quantity and wind pressure.

Description

A kind of connecting structure of double air intake centrifugal wind wheel blades and plate

Technical field:

The utility model relates to the technical fields of blower, more specifically to a kind of double air intake centrifugal wind wheel blades and disk The connecting structure of plate.

Background technique:

Double air intake centrifugal blowers are a kind of centrifugal blowers that can be entered the wind from wind wheel both ends, with common centrifugal fan structure It is similar, but a plate is additionally arranged on wind wheel of centrifugal blower, the blade Joint in plate and wind wheel, conventional wind wheel leaf Piece and plate use following snap fit connecting structure: forming card slot on the inner side edge of wind wheel blade, form in plate The slot opposite with wind wheel blade needs for wind wheel blade to be plugged into the slot of plate when the two installation is coupled, wind wheel blade Card slot face plate, then wind wheel blade is pushed into, realize that plate and wind wheel blade are mutually inserted；Then the gear at wind wheel both ends is installed Circle eliminates the radial clearance between wind wheel blade and plate finally using the outer ring of idler wheel rolling plate；Such snap fit Connecting structure cannot eliminate the axial gap between wind wheel blade and plate；And the assembly of its connecting structure is relatively complicated, dress With heavy workload.

Utility model content:

The purpose of the utility model is to solve the deficiencies of the prior art, and provides a kind of double air intake centrifugal wind wheel blades With the connecting structure of plate, the radial and axial gap between wind wheel blade and plate can be eliminated, and assembler can be simplified Skill improves production efficiency.

A kind of connecting structure of double air intake centrifugal wind wheel blades and plate, upper retaining ring, lower retaining ring, Ruo Ganyuan including annular The blade of arc and arc-shaped mid-game, are fixed with axle sleeve in mid-game, the both ends distribution of the blade be fixed on retaining ring and Lower retaining ring, an arc-shaped slot is formed on the outer ring of mid-game, and blade is plugged in the slot of mid-game, it is characterised in that: leaf The outer side edges of piece form card slot, and mid-game holding is in the card slot of blade.

Preferably, the upper retaining ring is identical with the size of lower retaining ring, and blade is uniform in a ring around the central axis of upper retaining ring Distribution, the slot are uniformly distributed in a ring around the central axis of mid-game.

Preferably, if being separately formed arterial highway buckle slot on the upper retaining ring and lower retaining ring, the upper and lower end of the blade is equal Form snap tab, the buckle slot of buckle slot or lower retaining ring that the snap tab of blade is distributed through retaining ring be pressed against retaining ring or On lower retaining ring.

Preferably, it is separately formed arc-shaped link slot on the upper retaining ring and lower retaining ring, the blade outboard wall Upper and lower end forms fluted, and the distribution of the upper and lower end of blade is plugged on the link slot of retaining ring and lower retaining ring, upper retaining ring and under Retaining ring holding is in the groove of blade upper and lower end.

Preferably, the arc radius of the link slot of the upper retaining ring and lower retaining ring is equal to the arc radius of blade.

The utility model has the beneficial effects that:

1, this centrifugal wind wheel connecting structure can eliminate the radial and axial gap between wind wheel blade and plate, and the two is coupled Bond strength is high afterwards, can bear higher revolving speed compared to traditional centrifugal wind wheel, and can improve air quantity and wind pressure.

2, this centrifugal wind wheel connecting structure compares traditional connecting structure, and assembly technology simplifies, it is easier to realize mechanization Automatic assembling effectively improves production efficiency.

Detailed description of the invention:

Fig. 1 is the schematic cross-sectional view of the utility model；

Fig. 2 is the partial enlargement diagram in Fig. 1 at A；

Fig. 3 is the structural schematic diagram that the utility model uses snap tab connection；

Fig. 4 is the structural schematic diagram of blade in Fig. 3；

Fig. 5 is the structural schematic diagram that the utility model uses card slot connection；

Fig. 6 is the structural schematic diagram of blade in Fig. 5.

In figure: 1, upper retaining ring；2, lower retaining ring；3, blade；31, card slot；32, snap tab；33, groove；4, mid-game；5 axle sleeves.

Specific embodiment:

Embodiment: as shown in Fig. 1 to 6, a kind of connecting structure of double air intake centrifugal wind wheel blades and plate, including annular Upper retaining ring 1, lower retaining ring 2, several arc-shaped blades 3 and arc-shaped mid-game 4 are fixed with axle sleeve 5, the leaf in mid-game 4 The both ends distribution of piece 3 is fixed on retaining ring 1 and lower retaining ring 2, and an arc-shaped slot is formed on the outer ring of mid-game 4, and blade 3 is inserted It connects in the slot of mid-game 4, the outer side edges of blade 3 form card slot 31, and 4 holding of mid-game is in the card slot 31 of blade 3.

Preferably, the upper retaining ring 1 is identical with the size of lower retaining ring 2, blade 3 around upper retaining ring 1 central axis in a ring It is uniformly distributed, the slot is uniformly distributed in a ring around the central axis of mid-game 4.

Preferably, if being separately formed arterial highway buckle slot on the upper retaining ring 1 and lower retaining ring 2, the blade 3 it is upper and lower End forms snap tab 32, and the snap tab 32 of blade 3 is distributed through the buckle slot of retaining ring 1 or the buckle slot pressure of lower retaining ring 2 It leans against on retaining ring 1 or lower retaining ring 2.

Preferably, arc-shaped link slot, 3 lateral wall of blade are separately formed on the upper retaining ring 1 and lower retaining ring 2 Upper and lower end form fluted 33, the upper and lower end distribution of blade 3 is plugged on the link slot of retaining ring 1 and lower retaining ring 2, upper gear Circle 1 and lower 2 holding of retaining ring are in the groove 33 of 3 upper and lower end of blade.

Preferably, the arc radius of the link slot of the upper retaining ring 1 and lower retaining ring 2 is equal to the arc radius of blade 3.

Working principle: the utility model is the connecting structure of double air intake centrifugal wind wheel blades and plate, will originally be designed Change in the card slot 31 of 3 inner side edge of blade and is set in the outer side edges of blade 3, thus when blade 3 is connect with mid-game 4, in the insertion of blade 3 After disk 4, does not need for blade 3 to be pushed into mid-game 4, the race deformation for realizing mid-game 4 is rolled by idler wheel, fill the card of blade 3 Slot 31 eliminates the radial and axial gap between wind wheel blade and plate；Traditional assembly technology is compared simultaneously, has carried out letter Change；

Fig. 3, Fig. 4 are the connecting structure of blade 3 and upper retaining ring 1 and lower retaining ring 2, and using is traditional grafting clinching knot Structure；

And Fig. 5, Fig. 6 are also the connecting structure of blade 3 Yu upper retaining ring 1 and lower retaining ring 2, can use mid-game 4 and blade 3 Connecting structure and assembly method, being connected and fixed between retaining ring 1, lower retaining ring 2 and blade 3 in realization.

The embodiment is rather than limited the present invention the utility model is illustrated.Any this field Technical staff can modify to the embodiment under the spirit and scope without prejudice to the utility model, therefore this is practical Novel rights protection scope, should be as listed by the claim of the utility model.

Claims (5)

1. a kind of connecting structure of double air intake centrifugal wind wheel blades and plate, upper retaining ring (1), lower retaining ring (2) including annular if, Arc-shaped blade (3) and arc-shaped mid-game (4) are done, is fixed in mid-game (4) axle sleeve (5), the both ends of the blade (3) Distribution is fixed on retaining ring (1) and lower retaining ring (2), and an arc-shaped slot is formed on the outer ring of mid-game (4), and blade (3) is inserted It connects in the slot of mid-game (4), it is characterised in that: the outer side edges of blade (3) form card slot (31), and mid-game (4) holding is in leaf In the card slot (31) of piece (3).

2. the connecting structure of a kind of double air intake centrifugal wind wheel blades and plate according to claim 1, it is characterised in that: institute It is identical with the size of lower retaining ring (2) to state retaining ring (1), blade (3) is uniformly distributed in a ring around the central axis of upper retaining ring (1), The slot is uniformly distributed in a ring around the central axis of mid-game (4).

3. the connecting structure of a kind of double air intake centrifugal wind wheel blades and plate according to claim 2, it is characterised in that: institute State retaining ring (1) and lower retaining ring (2) if on be separately formed arterial highway buckle slot, the upper and lower end of the blade (3) forms card The buckle slot of cramp (32), buckle slot or lower retaining ring (2) that the snap tab (32) of blade (3) is distributed through retaining ring (1) is pressed against On upper retaining ring (1) or lower retaining ring (2).

4. the connecting structure of a kind of double air intake centrifugal wind wheel blades and plate according to claim 2, it is characterised in that: institute It states and is separately formed arc-shaped link slot on retaining ring (1) and lower retaining ring (2), the upper and lower end of blade (3) lateral wall is equal It forms fluted (33), the upper and lower end distribution of blade (3) is plugged on the link slot of retaining ring (1) and lower retaining ring (2), upper retaining ring (1) and lower retaining ring (2) holding is in the groove (33) of blade (3) upper and lower end.

5. the connecting structure of a kind of double air intake centrifugal wind wheel blades and plate according to claim 4, it is characterised in that: institute The arc radius for stating the link slot of retaining ring (1) and lower retaining ring (2) is equal to the arc radius of blade (3).