CN210240101U

CN210240101U - Cross-flow fan blade assembly and cross-flow fan blade fixing structure

Info

Publication number: CN210240101U
Application number: CN201920803555.8U
Authority: CN
Inventors: Wenming Gao; 高文铭; Shukai He; 何书开
Original assignee: Wuhan Langdi Turbomachinery Co ltd
Current assignee: Wuhan Langdi Turbomachinery Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-04-03
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a fixed structure of through-flow fan blade subassembly and through-flow fan blade, including impeller body and outer axle sleeve, impeller body surface encircles and is provided with a plurality of bulge loops, and wherein the surface parcel of two bulge loops has the protection casing. The utility model discloses in, can wrap up the bulge loop on impeller body surface through inboard annular protective sheath spare, semi-annular inner chamber has been seted up with the internal surface of bulge loop contact to the protective sheath spare, a plurality of steel balls of evenly having arranged of the lateral wall of inner chamber, the mode through the interior cambered surface contact of steel ball and bulge loop lateral wall, can provide fine smoothness degree when impeller body is rotatory, the side ear surface that protective sheath spare both ends were equipped with has seted up the mounting hole simultaneously, run through the mounting hole through the screw, can be fixed protective sheath spare installation, under the rotatory prerequisite of impeller body not hindering, effectively avoid the impeller rotation to rock the back condition of taking place the skew, improve the stability of impeller body in high-speed rotatory in-process.

Description

Cross-flow fan blade assembly and cross-flow fan blade fixing structure

Technical Field

The utility model relates to a through-flow fan blade technical field especially relates to through-flow fan blade subassembly and through-flow fan blade fixed knot construct.

Background

The cross-flow fan mainly comprises an impeller, an air duct and a motor, wherein the impeller is made of aluminum alloy or engineering plastics, and the aluminum alloy impeller has high strength, light weight and high temperature resistance, and can keep stable operation for a long time without deformation; the plastic impeller is formed by injection molding of a mold and ultrasonic welding, is generally used in occasions with low rotating speed and has larger diameter.

The fan blade of cross-flow fan is usually with impeller formula structure as an organic whole, fixes the impeller, just can protect the fan blade of impeller, and the impeller of general cross-flow fan adopts the mode that both ends are fixed to install the impeller in the use, and the axle sleeve at both ends can be harmd in the long-term load operation of impeller to make the impeller take place to rock, cause the stability of impeller rotation in-process to obtain the guarantee.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a through-flow fan blade component and a through-flow fan blade fixing structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: through-flow fan blade subassembly and through-flow fan blade fixed knot construct, including impeller body and outer axle sleeve, impeller body surface is encircleed and is provided with a plurality of bulge loops, and wherein the surface coating of two bulge loops has the protective sheath spare, the inner chamber has been seted up to protective sheath spare inboard, and the lateral wall embedding of inner chamber has the steel ball, steel ball one side and the interior cambered surface sliding connection that the bulge loop lateral wall was equipped with, the welding of protective sheath spare both ends has the side ear, and the surface of side ear has seted up the mounting hole, impeller body's one end fixed mounting has the outer axle sleeve, and impeller body's the other end fixed mounting has the inner axle sleeve.

Preferably, the outer surface side wall of the protective sleeve is provided with an assembling plate through a locking screw, and the assembling plate is of a semi-annular structure.

Preferably, the side ear part is provided with two, and the two side ears are symmetrical about the vertical central line of the protective sleeve piece.

Preferably, the steel balls are arranged in two groups, and the two groups of steel balls are uniformly distributed on the side wall of the inner cavity.

Preferably, the number of the protective sleeve pieces is two, and the two protective sleeve pieces are symmetrical about the vertical center line of the impeller body.

Preferably, a plurality of impeller blades are welded around between a plurality of cams of the impeller body.

Preferably, the inner arc surface is arranged on the side wall of the convex ring, and the inner arc surface is of an annular structure.

Preferably, the number of the assembling plates is two, and the two assembling plates are distributed on the upper surface and the lower surface of the protective sleeve.

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

1. in the utility model, the convex ring on the surface of the impeller body can be wrapped by the inner annular protective sleeve, the inner surface of the protective sleeve contacting with the convex ring is provided with a semi-annular inner cavity, a plurality of steel balls are uniformly distributed on the side wall of the inner cavity, and a good smoothness can be provided when the impeller body rotates by the contact of the steel balls and the inner cambered surface of the side wall of the convex ring, and meanwhile, the surfaces of the side lugs arranged at the two ends of the protective sleeve are provided with mounting holes;

2. the utility model discloses in, run through the mounting hole through the screw, can be fixed with the installation of protective sheath spare, under the prerequisite that does not hinder the impeller body rotation, effectively avoid the impeller rotation to rock the condition that takes place the skew after, improve the stability of impeller body at high-speed rotatory in-process, barrier propterty is good, and the suitability is strong.

Drawings

Fig. 1 is a schematic structural view of a cross-flow fan blade assembly and a cross-flow fan blade fixing structure provided by the present invention;

fig. 2 is a schematic structural view of a cross-flow fan blade assembly and a cross-flow fan blade fixing structure provided by the present invention;

fig. 3 is a schematic structural view of the cross-flow fan blade assembly and the cross-flow fan blade fixing structure provided by the present invention.

Illustration of the drawings:

1. an impeller body; 2. a convex ring; 3. impeller blades; 4. protecting the sleeve; 5. an inner sleeve; 6. an outer sleeve; 7. an intrados surface; 8. a lateral ear; 9. mounting holes; 10. assembling a plate; 11. locking the screw; 12. an inner cavity; 13. and (5) steel balls.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, the cross-flow fan blade assembly and the cross-flow fan blade fixing structure include an impeller body 1 and an outer shaft sleeve 6, the surface of the impeller body 1 is provided with a plurality of convex rings 2 in a surrounding manner, the outer surfaces of two convex rings 2 are wrapped with a protective sleeve 4, an inner cavity 12 is formed in the inner side of the protective sleeve 4, a steel ball 13 is embedded in the side wall of the inner cavity 12, one side of the steel ball 13 is slidably connected with an inner arc surface 7 formed on the side wall of the convex ring 2, side lugs 8 are welded at two ends of the protective sleeve 4, a mounting hole 9 is formed in the surface of each side lug 8, the outer shaft sleeve 6 is fixedly mounted at one end of the impeller body 1, and an inner shaft sleeve 5.

Referring to fig. 2, an assembly plate 10 is installed at a position of a sidewall of an outer surface of the protective sleeve 4 through a locking screw 11, the assembly plate 10 is of a semi-annular structure, two side lugs 8 are respectively arranged, the two side lugs 8 are symmetrical with respect to a vertical center line of the protective sleeve 4, and the side lugs 8 can fix the protective sleeve 4.

Referring to fig. 1, 2 and 3, two groups of steel balls 13 are arranged, the two groups of steel balls 13 are uniformly distributed on the side wall of the inner cavity 12, the number of the protective sleeve pieces 4 is two, the two protective sleeve pieces 4 are symmetrical with respect to the vertical central line of the impeller body 1, the protective sleeve pieces 4 can improve the stability of the impeller body 1 in the rotating process, the impeller body 1 is protected when the shaft sleeve fails, a plurality of impeller blades 3 are welded around a plurality of cams of the impeller body 1, an inner arc surface 7 is arranged on the side wall of the convex ring 2, the inner arc surface 7 is of an annular structure, the inner arc surface 7 can improve the smoothness of the contact between the steel balls 13 and the convex ring 2, the number of the assembling plates 10 is two, the two assembling plates 10 are distributed on the upper surface and the lower surface of the protective sleeve pieces 4, and the steel balls 13 in.

The working principle is as follows: when in use, the impeller body 1 is installed and fixed through the inner shaft sleeve 5 and the outer shaft sleeve 6 arranged at the two ends of the impeller body 1, then the convex ring 2 on the surface of the impeller body 1 is wrapped by the inner annular protective sleeve 4, the semi-annular inner cavity 12 is arranged on the inner surface of the protective sleeve 4 contacted with the convex ring 2, a plurality of steel balls 13 are uniformly distributed on the side wall of the inner cavity 12, good fluency can be provided when the impeller body 1 rotates through the way that the steel balls 13 are contacted with the inner cambered surface 7 of the side wall of the convex ring 2, when the protective sleeve 4 is fixed, the mounting holes 9 are arranged on the surfaces of the side lugs 8 arranged at the two ends of the protective sleeve 4, the protective sleeve 4 can be installed and fixed through the mounting holes 9 by penetrating through screws, under the premise of not hindering the rotation of the impeller body 1, the condition of deviation after the rotation and shaking of the impeller is effectively avoided, and the stability of, when the steel balls 13 of the protection sleeve 4 need to be replaced, the locking screws 11 mounted on the surface of the protection sleeve 4 are detached, the assembling plate 10 of the semi-annular structure is separated from the protection sleeve 4, and the steel balls 13 embedded in the assembling plate are convenient to replace.

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. Through-flow fan blade subassembly and through-flow fan blade fixed knot construct, including impeller body (1) and outer axle sleeve (6), its characterized in that, impeller body (1) surface is encircleed and is provided with a plurality of bulge loops (2), and wherein the surface coating of two bulge loops (2) has protection cover spare (4), inner chamber (12) have been seted up to protection cover spare (4) inboard, and the lateral wall embedding of inner chamber (12) has steel ball (13), intrados (7) sliding connection that steel ball (13) one side and bulge loop (2) lateral wall were equipped with, the welding of protection cover spare (4) both ends has side ear (8), and the surface of side ear (8) has seted up mounting hole (9), the one end fixed mounting of impeller body (1) has outer axle sleeve (6), and the other end fixed mounting of impeller body (1) has inner axle sleeve (5).

2. The cross-flow fan blade assembly and the cross-flow fan blade fixing structure of claim 1, wherein an assembling plate (10) is installed on the side wall of the outer surface of the protective sleeve (4) through a locking screw (11), and the assembling plate (10) is of a semi-annular structure.

3. The cross-flow fan blade assembly and the cross-flow fan blade fixing structure as claimed in claim 1, wherein the number of the side lugs (8) is two, and the two side lugs (8) are symmetrical with respect to a vertical central line of the protective sleeve (4).

4. The cross-flow fan blade assembly and the cross-flow fan blade fixing structure as claimed in claim 1, wherein two groups of steel balls (13) are provided, and the two groups of steel balls (13) are uniformly arranged on the side wall of the inner cavity (12).

5. The cross-flow fan blade assembly and the cross-flow fan blade fixing structure as claimed in claim 1, wherein there are two protection sleeve members (4), and the two protection sleeve members (4) are symmetrical with respect to a vertical center line of the impeller body (1).

6. The cross-flow fan blade assembly and the fixing structure of the cross-flow fan blade according to claim 1, wherein a plurality of impeller blades (3) are welded around among a plurality of cams of the impeller body (1).

7. The cross-flow fan blade assembly and the fixing structure of the cross-flow fan blade according to claim 1, wherein an inner arc surface (7) is formed in the side wall of the convex ring (2), and the inner arc surface (7) is of an annular structure.

8. The cross-flow fan blade assembly and the cross-flow fan blade fixing structure as claimed in claim 2, wherein two assembling plates (10) are provided, and the two assembling plates (10) are distributed on the upper and lower surfaces of the protective sleeve (4).