Front disc air inlet sealing structure of efficient fan

Abstract

The utility model provides a front disc air inlet sealing structure of an efficient fan, and belongs to the technical field of fans. The problems that an existing wheel cover is invariable in assembly and disassembly and poor in sealing performance at the connecting position are solved. The front disc air inlet sealing structure of the efficient fan comprises a shell with an air inlet and a wheel cover arranged on the shell and connected with the shell, an installation unit connected with the air inlet and used for installing the wheel cover in a sliding mode is arranged on the peripheral wall, located at the wheel cover, of the air inlet, and an installation unit connected with the installation unit and used for installing the wheel cover in a sliding mode is arranged on the peripheral wall, located at the wheel cover, of the shell. The limiting unit is arranged on the air inlet, used for limiting the position of the wheel cover and used for fixing the wheel cover, and a sealing unit used for enhancing the sealing performance of the connecting position is further arranged on the peripheral wall, located at the wheel cover, of the air inlet. The utility model has the advantages that the assembly is convenient, and the sealing property at the joint is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan technical field relates to a kind of front disc air inlet sealing structure of high efficiency fan. BACKGROUND

[0002] Fan is a kind of air delivery impeller machinery, is widely used in aviation, coal, electric power, metallurgy, electronics, automobile, air conditioning and other industrial production and daily life field. Impeller is the most important component of centrifugal fan, its function is to convert mechanical energy into static pressure energy and kinetic energy of gas, wherein the wheel cover is an important component of fan, it is used to protect fan, in order to facilitate the assembly of impeller, wheel cover is generally set as split type, it is generally connected by stud, there is a certain gap at its connecting portion, but due to the influence of centrifugal force, leading to its connecting portion will adsorb impurities along the gap into, thereby affecting the service life of fan, at the same time, wheel cover needs to be calibrated when assembling, leading to its decoration is relatively time-consuming, thereby not meeting the use demand. SUMMARY

[0003] The utility model aims at the above-mentioned problems existing in prior art, provide a kind of sealing structure that improves sealing property and reduces assembly time.

[0004] The utility model discloses a kind of front disc air inlet sealing structure of high efficiency fan, including the shell with air inlet and the wheel cover being set on shell and being connected with it, it is characterized in that, the air inlet is located on the outer peripheral wall at wheel cover and is provided with the installation unit being connected with it and being used for the sliding installation of wheel cover, the shell is located on the peripheral wall at wheel cover and is provided with the limiting unit being connected with it, and is used to limit the position of wheel cover, and is used to fix wheel cover, the air inlet is located on the outer peripheral wall at wheel cover and is also provided with the sealing unit for strengthening the sealing property of connecting portion.

[0005] In the above-mentioned one kind of front disc air inlet sealing structure of high efficiency fan, the installation unit includes installation block, the outer peripheral wall of the installation block is equipped with several sliding grooves being arranged at interval along its circumferential direction.

[0006] In the above-mentioned one kind of front disc air inlet sealing structure of high efficiency fan, the wheel cover includes the sliding part being slidably cooperated with installation block and the cover portion being integrally arranged with sliding part.

[0007] In the sealing structure of the front disc air inlet of the high-efficiency fan, the limiting unit comprises an outer limiting plate connected with the shell and an inner limiting plate connected with the outer limiting plate, the inner limiting plate is provided with a limiting protrusion protruding radially outward and abutting against the sliding part on the inner circumferential wall of the inner end, the limiting unit further comprises a plurality of connecting studs, the connecting studs are arranged on the outer limiting plate and connected with the outer limiting plate, the lower ends of the connecting studs extend axially downward, extend through the inner limiting plate and extend into the sliding part.

[0008] In the sealing structure of the front disc air inlet of the high-efficiency fan, the sealing unit comprises a sealing ring abutting against the shell.

[0009] Compared with the prior art, the sealing structure of the front disc air inlet of the high-efficiency fan facilitates the assembly of the wheel cover through the mounting unit and the limiting unit, and improves the sealing performance of the connecting part through the sealing unit. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a partial sectional view of the shell in the sealing structure of the front disc air inlet of the high-efficiency fan.

[0011] In the drawing, 1 is a shell, 2 is a wheel cover, 3 is a mounting block, 4 is an outer limiting plate, 5 is an inner limiting plate, 6 is a connecting stud, and 7 is a sealing ring. DETAILED DESCRIPTION

[0012] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0013] As Figure 1As shown, the front disc air inlet sealing structure of the high-efficiency fan comprises a shell 1 with an air inlet and a wheel cover 2 arranged on the shell 1 and connected with the shell 1, the air inlet is arranged on the outer circumferential wall of the wheel cover 2 and is connected with a mounting unit for sliding installation of the wheel cover 2, the shell 1 is arranged on the circumferential wall of the wheel cover 2 and is connected with a limiting unit for limiting the position of the wheel cover 2 and fixing the wheel cover 2, and the outer circumferential wall of the air inlet at the wheel cover 2 is further provided with a sealing unit for strengthening the sealing performance of the connecting part, the sealing unit is in abutment with the shell 1 through the mounting unit and the wheel cover 2 after assembly, the mounting unit comprises a mounting block 3 arranged in an annular structure, a plurality of sliding grooves are arranged on the outer circumferential wall of the mounting block 3 and are spaced apart along the circumferential direction of the mounting block 3, the length of the sliding groove is less than the length of the mounting block 3, the limiting unit comprises an outer limiting plate 4 connected with the shell 1 and an inner limiting plate 5 connected with the outer limiting plate 4, the vertical section of the outer limiting plate 4 is arranged in a symmetrical L-shaped structure, the outer limiting plate 4 is connected with the shell 1 through a stud, the stud is provided with a locking cap in threaded sliding fit with the stud, the inner limiting plate 5 is arranged in an annular structure, the inner limiting plate 5 is provided with a limiting protrusion protruding radially outward and in abutment with the sliding part on the inner circumferential wall of the inner end, the inner limiting plate 5 can also be provided with a sliding groove, the limiting unit further comprises a plurality of connecting studs 6, the outer end of the connecting stud 6 is provided with a dismounting cap, the connecting stud 6 is arranged on the outer limiting plate 4 and connected with the outer limiting plate 4, the lower end of the connecting stud 6 extends axially downward and extends through the inner limiting plate 5 and into the sliding part, the mounting holes are arranged on the inner limiting plate 5, the outer limiting plate 4 and the sliding part, the mounting hole on the outer limiting plate 4 can be a threaded hole, and the sealing unit comprises a sealing ring 7 in abutment with the shell 1 and sleeved on the air inlet.

[0014] As a preferred structure, the wheel cover 2 comprises a sliding part in sliding fit with the mounting block 3 and a cover part integrally arranged with the sliding part.

[0015] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0016] Although a plurality of terms are used herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A front disc inlet sealing structure of a high-efficiency fan, comprising a casing (1) with an inlet and a wheel cover (2) arranged on and connected with the casing (1), characterized in that, The air inlet is located on the outer circumferential wall of the wheel cover (2) and is provided with a mounting unit connected with the wheel cover (2) and used for slidingly mounting the wheel cover (2); the shell (1) is located on the circumferential wall of the wheel cover (2) and is provided with a limiting unit connected with the shell (1) and used for limiting the position of the wheel cover (2) and fixing the wheel cover (2); and the air inlet is located on the outer circumferential wall of the wheel cover (2) and is further provided with a sealing unit used for enhancing the sealing performance of the connecting portion.

2. The front disc inlet sealing structure of a high-efficiency fan according to claim 1, characterized in that, The mounting unit comprises a mounting block (3), and the outer circumferential wall of the mounting block (3) is provided with a plurality of sliding grooves which are arranged at intervals along the circumferential direction.

3. The front disc inlet sealing structure of a high-efficiency fan according to claim 2, characterized in that, The wheel cover (2) comprises a sliding portion slidingly matched with the mounting block (3) and a cover portion integrally arranged with the sliding portion.

4. The front disc inlet seal structure of a high efficiency fan according to claim 1, wherein, The limiting unit comprises an outer limiting plate (4) connected with the shell (1) and an inner limiting plate (5) connected with the outer limiting plate (4); the inner limiting plate (5) is provided with a limiting protrusion protruding radially outward on the inner circumferential wall of the inner end and abutting against the sliding portion; the limiting unit further comprises a plurality of connecting studs (6) arranged on and connected with the outer limiting plate (4); the lower end of each connecting stud (6) extends axially downward and extends through the inner limiting plate (5) and the sliding portion.

5. The front disc inlet seal structure of a high efficiency fan according to claim 1, wherein, The sealing unit comprises a sealing ring (7) abutting against the shell (1).

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