Hook-tooth-shaped sealing groove structure for air floating centrifugal fan impeller

Abstract

The utility model relates to the technical field of air floating centrifugal fan impellers, in particular to a hook tooth-shaped sealing groove structure for an air floating centrifugal fan impeller. The technical problems that a common air floating centrifugal fan impeller only comprises an impeller structure and can conduct pressure pumping operation, but an adjustable sealing structure is lacked, gas is prone to leaking into a fan from the back of the impeller, and the sealing effect and the operation efficiency of the fan are affected are solved. According to the technical scheme, the hook-tooth-shaped sealing groove structure for the air floating centrifugal fan impeller comprises a sealing assembly. By arranging the adjustable sealing structure, precise matching during installation of the impeller is guaranteed, and the problems that a common air floating centrifugal fan impeller only comprises an impeller structure and can conduct pumping operation, but is lack of an adjustable sealing structure, gas is prone to leaking into the fan from the back of the impeller, and the impeller cannot be installed easily are solved. And the sealing effect and the operation efficiency of the fan are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-floating centrifugal fan impellers, in particular to a hook-tooth-shaped sealing groove structure for air-floating centrifugal fan impellers. Background Art

[0002] As a new generation of air supply and pressure fans in sewage treatment, aquaculture, papermaking and other industries, air-floating fans have advantages that traditional fans do not have, such as energy saving, stability and low noise.

[0003] Common air-floating centrifugal fan impellers only include an impeller structure and can perform pumping and pressure operations, but lack an adjustable sealing structure and cannot guarantee that gas will not leak into the fan from the back of the impeller. Gas is prone to leaking from the back of the impeller into the fan, affecting the sealing effect and fan operating efficiency.

[0004] Therefore, the above-mentioned air-floating centrifugal fan impeller lacks an adjustable sealing structure and cannot ensure that gas will not leak into the fan from the back of the impeller. This problem urgently needs to be solved to improve the use scenarios of the air-floating centrifugal fan impeller. Utility Model Content

[0005] In order to overcome the common problem of air-floating centrifugal fan impellers, there is a lack of an adjustable sealing structure, which cannot ensure that gas will not leak into the fan from the back of the impeller. Gas is prone to leaking into the fan from the back of the impeller, affecting the sealing effect and the operating efficiency of the fan.

[0006] The technical solution of the utility model is: a hook-tooth sealing groove structure for an air-floating centrifugal fan impeller, including a sealing assembly, the sealing assembly consisting of a sealing disc body, an upper placement groove, a first connecting groove, a connecting groove, a limiting hole, a lower placement groove and a fixing bolt. The top of the sealing disc body is provided with an upper placement groove, the bottom of the sealing disc body is provided with a lower placement groove, an impeller assembly is arranged above the sealing assembly, the impeller assembly consists of an impeller disc, a second connecting groove, a fan blade, an inner hook-shaped sealing ring, an annular hook-shaped sealing tooth and a fixing hole, and the impeller disc is placed inside the upper placement groove.

[0007] Preferably, an adjustable sealing structure is provided to ensure precise fit during impeller installation, so as to solve the problem that the common air-floating centrifugal fan impeller only includes an impeller structure and can perform pumping and pressure operations, but lacks an adjustable sealing structure, which makes it easy for gas to leak from the back of the impeller into the inside of the fan, affecting the sealing effect and the operating efficiency of the fan.

[0008] Preferably, a first connecting slot is provided in the middle of the upper placement slot, and a number of limiting holes are symmetrically provided at equal intervals on both sides of the bottom of the sealing disc body. The sealing disc body is fixed to the fan after rivets penetrate the limiting holes.

[0009] Preferably, a second connecting slot is provided on the top of the impeller disc at a position corresponding to the first connecting slot, and blades are provided at equal intervals around the impeller disc. When the impeller disc rotates, the blades are driven to rotate, and the pumping and pressure operations are performed through the rotating blades.

[0010] Preferably, three inner hook-shaped sealing rings are welded at equal intervals on the bottom of the impeller disc, and a number of annular hook-shaped sealing teeth are arranged at equal intervals on the bottom of the inner hook-shaped sealing ring. The inner hook-shaped sealing ring and the annular hook-shaped sealing teeth are separate entities and are not fixed to each other.

[0011] Preferably, the top end of the annular hook-shaped sealing tooth is inserted into the inner side of the inner hook-shaped sealing ring, and a number of connecting grooves are provided inside the upper placement groove at the position corresponding to the annular hook-shaped sealing tooth. During installation, the top end of the annular hook-shaped sealing tooth is inserted into the inner side of the inner hook-shaped sealing ring, and a sealing structure is formed by the meshing of the annular hook-shaped sealing tooth and the inner hook-shaped sealing ring, thereby realizing a structure with improved sealing performance and preventing gas from leaking from the back of the impeller into the interior of the fan, affecting the sealing effect.

[0012] Preferably, the bottom end of the annular hook-shaped sealing tooth is inserted into the interior of the connecting groove, and a fixing hole is opened at the bottom end of the annular hook-shaped sealing tooth. After the top end of the annular hook-shaped sealing tooth is connected, its bottom end is inserted into the interior of the connecting groove.

[0013] Preferably, a number of fixing bolts are provided at positions corresponding to the fixing holes at the bottom of the sealing disc body. The annular hook-shaped sealing teeth pass through the sealing disc body through the fixing bolts and are screwed into the interior of the fixing holes for fixation. After the bottom ends of the annular hook-shaped sealing teeth are inserted into the connecting grooves, they are fixed by fixing bolts. In this way, the annular hook-shaped sealing teeth can be disassembled and assembled by the fixing bolts, realizing the adjustment function and preventing the impeller from being unable to precisely match the sealing disc under different working conditions or models, thereby affecting the operating efficiency of the fan.

[0014] Beneficial effects of the utility model:

[0015] 1. By setting up an adjustable sealing structure, the precise fit of the impeller during installation is ensured to solve the problem that the common air-floating centrifugal fan impeller only includes the impeller structure and can perform pumping and pressure operations, but lacks an adjustable sealing structure and cannot ensure that gas will not leak into the fan from the back of the impeller. Gas is prone to leaking from the back of the impeller into the fan, affecting the sealing effect and fan operating efficiency.

[0016] 2. During installation, insert the top of the annular hook-shaped sealing tooth into the inner side of the inner hook-shaped sealing ring. The engagement of the annular hook-shaped sealing tooth and the inner hook-shaped sealing ring forms a sealing structure, thereby improving the sealing performance and preventing gas from leaking from the back of the impeller into the fan, which would affect the sealing effect.

[0017] 3. After the top end of the annular hook-shaped sealing tooth is connected, insert its bottom end into the connecting groove and fix it with the fixing bolt. In this way, the annular hook-shaped sealing tooth can be disassembled and assembled by the fixing bolt, realizing the adjustment function, preventing the impeller from failing to precisely match the sealing disc under different working conditions or models, thereby affecting the operating efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the structure of a hook-tooth seal groove for an air-floating centrifugal fan impeller of the present invention;

[0019] Figure 2 Shown is a three-dimensional cross-sectional schematic diagram of a hook-tooth seal groove structure for an air-floating centrifugal fan impeller of the present invention;

[0020] Figure 3 Shown is a bottom view schematic diagram of a seal assembly with a hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to the present invention;

[0021] Figure 4 Shown is a schematic diagram of a seal assembly with a hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to the present invention;

[0022] Figure 5 Shown is a bottom view schematic diagram of an impeller assembly with a hook-tooth sealing groove structure for an air-floating centrifugal fan impeller of the present invention.

[0023] In the figure: 1. Sealing assembly; 11. Sealing disc body; 12. Upper placement groove; 13. First connecting slot; 14. Connecting slot; 15. Limiting hole; 16. Lower placement groove; 17. Fixing bolt; 2. Impeller assembly; 21. Impeller disc; 22. Second connecting slot; 23. Fan blade; 24. Inner hook-shaped sealing ring; 25. Annular hook-shaped sealing tooth; 26. Fixing hole. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figure 1-5 The utility model provides an embodiment: a hook-tooth sealing groove structure for an air-floating centrifugal fan impeller, comprising a sealing assembly 1, the sealing assembly 1 consisting of a sealing disc body 11, an upper placement groove 12, a first connecting groove 13, a connecting groove 14, a limiting hole 15, a lower placement groove 16 and a fixing bolt 17. The upper placement groove 12 is opened at the top of the sealing disc body 11, and the lower placement groove 16 is opened at the bottom of the sealing disc body 11. An impeller assembly 2 is arranged above the sealing assembly 1, and the impeller assembly 2 consists of an impeller disc 21, a second connecting groove 22, a fan blade 23, an inner hook-shaped sealing ring 24, an annular hook-shaped sealing tooth 25 and a fixing hole 26. The impeller disc 21 is placed inside the upper placement groove 12.

[0026] See also Figure 1-5 In this embodiment, a first connecting groove 13 is provided in the middle of the upper placement groove 12, and a plurality of limiting holes 15 are symmetrically provided on both sides of the bottom of the sealing disc body 11 at equal intervals. During installation, the top end of the annular hook-shaped sealing tooth 25 is inserted into the inner side of the inner hook-shaped sealing ring 24. The engagement of the annular hook-shaped sealing tooth 25 and the inner hook-shaped sealing ring 24 forms a sealing structure, thereby improving the sealing performance. After the top end of the annular hook-shaped sealing tooth 25 is connected, its bottom end is inserted into the interior of the connecting groove 14 and fixed by the fixing bolt 17. In this way, the annular hook-shaped sealing tooth 25 can be disassembled and assembled by the fixing bolt 17, thereby completing the adjustment work.

[0027] See also Figure 1-5 In this embodiment, three inner hook-shaped sealing rings 24 are welded at equal intervals on the bottom of the impeller disc 21. A number of annular hook-shaped sealing teeth 25 are arranged at equal intervals on the bottom of the inner hook-shaped sealing ring 24. The top of the annular hook-shaped sealing tooth 25 is inserted into the inner side of the inner hook-shaped sealing ring 24. A number of connecting grooves 14 are provided inside the upper placement groove 12 at positions corresponding to the annular hook-shaped sealing teeth 25. The bottom ends of the annular hook-shaped sealing teeth 25 are inserted into the interior of the connecting grooves 14. A fixing hole 26 is provided at the bottom end of the annular hook-shaped sealing tooth 25. A number of fixing bolts 17 are provided at positions corresponding to the fixing holes 26 on the bottom of the sealing disc body 11. The annular hook-shaped sealing teeth 25 pass through the sealing disc body 11 through the fixing bolts 17 and are screwed in. The fixing hole 26 is fixed inside. During installation, the top end of the annular hook-shaped sealing tooth 25 is inserted into the inner side of the inner hook-shaped sealing ring 24. The engagement of the annular hook-shaped sealing tooth 25 and the inner hook-shaped sealing ring 24 forms a sealing structure, thereby realizing a structure with improved sealing performance, thereby preventing gas from leaking into the fan from the back of the impeller and affecting the sealing effect. After the top end of the annular hook-shaped sealing tooth 25 is connected, its bottom end is inserted into the inside of the connecting groove 14 and fixed by the fixing bolt 17. In this way, the annular hook-shaped sealing tooth 25 can be disassembled and assembled by the fixing bolt 17, thereby realizing the adjustment function, thereby preventing the impeller from being unable to precisely match the sealing disk under different working conditions or models, thereby affecting the operating efficiency of the fan.

[0028] During operation, the top end of the annular hook-shaped sealing tooth 25 is inserted into the inner side of the inner hook-shaped sealing ring 24 during installation, and a sealing structure is formed by the engagement of the annular hook-shaped sealing tooth 25 and the inner hook-shaped sealing ring 24. After the top end of the annular hook-shaped sealing tooth 25 is connected, its bottom end is inserted into the interior of the connecting groove 14 and fixed by the fixing bolt 17. In this way, the annular hook-shaped sealing tooth 25 can be disassembled and assembled by the fixing bolt 17, thereby realizing an adjustable sealing function.

[0029] Through the above steps, by setting an adjustable sealing structure, the precise fit of the impeller during installation is ensured to solve the problem that the common air-floating centrifugal fan impeller only includes an impeller structure and can perform pumping and pressure operations, but lacks an adjustable sealing structure, which makes it easy for gas to leak from the back of the impeller into the fan, affecting the sealing effect and the fan operating efficiency.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A hook-tooth seal groove structure for an air-floating centrifugal fan impeller, comprising a seal assembly (1), characterized in that: The sealing assembly (1) consists of a sealing disc body (11), an upper placement groove (12), a first connecting groove (13), a connecting groove (14), a limiting hole (15), a lower placement groove (16) and a fixing bolt (17). The upper placement groove (12) is provided on the top of the sealing disc body (11), and the lower placement groove (16) is provided on the bottom of the sealing disc body (11). An impeller assembly (2) is provided above the sealing assembly (1). The impeller assembly (2) consists of an impeller disc (21), a second connecting groove (22), a fan blade (23), an inner hook-shaped sealing ring (24), an annular hook-shaped sealing tooth (25) and a fixing hole (26). The impeller disc (21) is placed inside the upper placement groove (12).

2. The hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to claim 1, characterized in that: A first connecting slot (13) is provided in the middle of the upper placement slot (12), and a plurality of limiting holes (15) are symmetrically provided at equal intervals on both sides of the bottom of the sealing disc body (11).

3. The hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to claim 2, characterized in that: A second connecting slot (22) is provided at a position on the top of the impeller disc (21) corresponding to the first connecting slot (13), and blades (23) are provided at equal intervals around the impeller disc (21).

4. The hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to claim 1, characterized in that: Three inner hook-shaped sealing rings (24) are welded at equal intervals on the bottom of the impeller disc (21), and a plurality of annular hook-shaped sealing teeth (25) are arranged at equal intervals on the bottom of the inner hook-shaped sealing ring (24).

5. The hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to claim 4, characterized in that: The top end of the annular hook-shaped sealing tooth (25) is inserted into the inner side of the inner hook-shaped sealing ring (24), and a plurality of connecting grooves (14) are provided inside the upper placement groove (12) at positions corresponding to the annular hook-shaped sealing tooth (25).

6. The hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to claim 5, characterized in that: The bottom end of the annular hook-shaped sealing tooth (25) is inserted into the interior of the connecting groove (14), and a fixing hole (26) is formed at the bottom end of the annular hook-shaped sealing tooth (25).

7. The hook-tooth seal groove structure for an air-floating centrifugal fan impeller according to claim 6, characterized in that: A plurality of fixing bolts (17) are provided at positions corresponding to the fixing holes (26) at the bottom of the sealing disc body (11), and the annular hook-shaped sealing teeth (25) are passed through the sealing disc body (11) by the fixing bolts (17) and then screwed into the interior of the fixing holes (26) for fixation.

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