Air supply device of specific gravity classificator

Abstract

The air supply device of the specific gravity classificator comprises an impeller arranged in a shell, the impeller comprises a wheel shaft and fan blades, the wheel shaft is provided with clamping parts which are provided with openings in the circumferential direction and used for clamping the fan blades, and the wheel shaft is further sleeved with a positioning cylinder provided with positioning plates clamped between the fan blades and the adjacent clamping parts. And the end part of the wheel shaft is screwed with a locking nut which is propped against the positioning cylinder. After the fan blades are moved out of the positioning barrel in the axial direction, the fan blades are moved out of the clamping part in the circumferential direction, any damaged fan blade can be rapidly disassembled and replaced, and the assembling and disassembling difficulty and the maintenance cost are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of gravity concentrators, and in particular to an air supply device for a gravity concentrator. Background Art

[0002] The air supply device is an important part of the gravity separator, which can provide the required wind force for the gravity separator. The existing air supply device includes an impeller composed of multiple blades. When any blade is damaged, the entire impeller needs to be disassembled and replaced, which is inconvenient to disassemble and has high maintenance costs. Therefore, the inventor proposes an air supply device for the gravity separator. Utility Model Content

[0003] The purpose of this application is to propose an air supply device for a specific gravity concentrator to improve the convenience of installing and removing fan blades.

[0004] The embodiment of the present application is implemented as follows:

[0005] The present application provides an air supply device for a specific gravity concentrator, including an impeller arranged in a shell, the impeller including a wheel shaft and fan blades, a clamping portion with a circumferential opening for clamping the fan blades is provided on the wheel shaft, a positioning cylinder with a positioning plate clamped between the fan blades and the adjacent clamping portion is also sleeved on the wheel shaft, and a locking nut that is screwed on the end of the wheel shaft and pressed against the positioning cylinder is screwed.

[0006] The present application can realize rapid disassembly and replacement of any damaged fan blade by removing the positioning cylinder axially and then removing the fan blade from the clamping portion circumferentially, thereby reducing the difficulty of assembly and disassembly and the maintenance cost.

[0007] In an optional embodiment, the clamping portion is arranged along the axial direction of the wheel axle.

[0008] In an optional embodiment, the clamping portions are evenly distributed along the circumference of the wheel axle.

[0009] In an optional embodiment, the clamping portion defines an arc-shaped clamping groove.

[0010] In an optional embodiment, the root of the fan blade has a snap-in plate adapted to the snap-in groove.

[0011] In an optional embodiment, the positioning plate is configured as an arc-shaped plate that matches the outer shape of the wheel axle.

[0012] In an alternative embodiment, the ends of the wheel axle are provided with coaxially arranged connecting sections.

[0013] In an optional embodiment, the outer diameter of the connecting section is smaller than the outer diameter of the axle.

[0014] In an optional embodiment, the locking nut is screwed onto the connecting section.

[0015] In an optional embodiment, an end cover for supporting the connecting section is provided on the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only used to explain the present application, rather than to limit the scope of the present application. In the accompanying drawings:

[0017] Figure 1 is a schematic diagram of an air supply device of a specific gravity concentrator according to an embodiment of the present application;

[0018] Figure 2 is a cross-sectional schematic diagram of an impeller according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a wheel axle and a positioning cylinder according to an embodiment of the present application;

[0020] Reference numerals:

[0021] 10. Shell;

[0022] 20. Impeller;

[0023] 11. End cap;

[0024] 12. Motor;

[0025] 21. Axle;

[0026] 22. Fan blades;

[0027] 23. Positioning tube;

[0028] 24. Locking nut;

[0029] 211, clamping part;

[0030] 212. Open your mouth;

[0031] 213, connecting section;

[0032] 221, card plate;

[0033] 231. Positioning plate. DETAILED DESCRIPTION

[0034] Example 1

[0035] See also Figure 1-Figure 3 This embodiment provides an air supply device for a specific gravity concentrator to improve the convenience of installing and removing fan blades.

[0036] In this embodiment, the air supply device of the specific gravity selector includes an impeller 20 arranged in the shell 10, and the impeller 20 includes a wheel shaft 21 and blades 22. The wheel shaft 21 is provided with a clamping portion 211 with a circumferential opening 212 for clamping the blades 22. The wheel shaft 21 is also provided with a positioning cylinder 23 with a positioning plate 231 clamped between the blades 22 and the adjacent clamping portion 211. The end of the wheel shaft 21 is screwed with a locking nut 24 that is tightly pressed against the positioning cylinder 23.

[0037] In this embodiment, after the positioning cylinder 23 is moved out in the axial direction, the fan blade 22 is moved out from the clamping portion 211 in the circumferential direction, so that any damaged fan blade 22 can be quickly disassembled and replaced, thereby reducing the difficulty of assembly and disassembly and the maintenance cost.

[0038] It should be noted that the impeller 20 is arranged as a whole inside the shell 10, one end of the wheel shaft 21 of the impeller 20 is transmission-connected to the motor 12 fixed on the shell 10, and the other end is rotatably provided on the end cover 11 of the shell 10, and the motor 12 is used to drive the impeller 20 to rotate inside the shell 10, and the wind generated by the rotation of the impeller 20 flows out from the air outlet of the shell 10 to provide the required wind force for the specific gravity concentrator.

[0039] Specifically, the clamping portion 211 is welded to the circumferential surface of the wheel axle 21, and multiple clamping portions 211 are evenly distributed along the circumference of the wheel axle 21, and each clamping portion 211 is arranged along the axial direction of the wheel axle 21. The clamping portion 211 is constructed into an L-shape along the cross-section, and both ends of the clamping portion 211 are closed. The opening 212 of the clamping portion 211 is arranged on one side along the circumference of the wheel axle 21. The clamping portion 211 defines an arc-shaped clamping groove along the cross-section on the wheel axle 21, and the fan blade 22 can rotate along the circumference of the wheel axle 21 to achieve a clamping fit with the clamping portion 211.

[0040] In addition, the fan blades 22 are evenly distributed along the circumference of the wheel axle 21, and the fan blades 22 are arranged along the radial direction of the wheel axle 21 as a whole. The fan blades 22 maintain a one-to-one correspondence with the clamping portion 211. A clamping plate 221 adapted to the clamping groove is provided at the root of the fan blade 22. The clamping plate 221 is constructed into an arc shape adapted to the outer shape of the wheel axle 21 along the cross section. When the clamping plate 221 is fitted to the circumferential surface of the wheel axle 21, the circumferential rotation of the wheel axle 21 can make the clamping plate 221 inserted into the clamping groove with a matching shape, thereby realizing the clamping fit between the fan blade 22 and the clamping portion 211. The axial length of the clamping plate 221 is equal to the axial length of the clamping groove, so as to avoid the axial displacement of the clamping plate 221 along the wheel axle 21 inside the clamping groove, thereby ensuring the stability of the fan blade 22 installed on the clamping portion 211.

[0041] In addition, a coaxially arranged connecting section 213 is provided on the outer end face of the wheel axle 21. The outer diameter of the connecting section 213 is smaller than the outer diameter of the wheel axle 21. The connecting section 213 is used for rotationally connecting with the end cover 11. The outer end portion of the positioning cylinder 23 is provided with a through hole adapted to the connecting section 213, and the diameter of the through hole is equal to the outer diameter of the connecting section 213. The connecting section 213 passes through the through hole, and the inner end face of the through hole abuts against the outer end face of the wheel axle 21. The positioning plate 231 and the positioning cylinder 23 are an integrally formed structure. The positioning plate 231 is constructed into an arc-shaped plate adapted to the outer shape of the wheel axle 21. The positioning plate 231 is fitted on the circumferential surface of the wheel axle 21, and the positioning plate 231 is clamped between the fan blade 22 and the adjacent connecting portion 211. The positioning plate 231 restricts the fan blade 22, and is used to prevent the fan blade 22 from being positioned along the circumferential direction of the wheel axle 21, thereby ensuring the stability of the fan blade 22 installed on the wheel axle 21.

[0042] It should also be noted that the locking nut 24 is screwed onto the connecting section 213 and abuts against the outer side of the positioning tube 23 . The locking nut 24 is used to fix the positioning tube 23 on the axle 21 to prevent the positioning tube 23 from being displaced axially along the axle 21 .

[0043] When disassembling to repair or replace a damaged fan blade, first remove the end cover bolted to the shell, then remove the locking nut. At this time, the positioning cylinder can be taken out along the axial direction of the wheel axle after losing the restriction of the locking nut. Finally, rotate the damaged fan blade along the circumference of the wheel axle until it disengages from the clamping portion, thereby completing the removal of the damaged fan blade.

[0044] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An air supply device for a specific gravity concentrator, comprising an impeller arranged in a housing, characterized in that: The impeller includes a wheel shaft and blades. The wheel shaft is provided with a clamping portion having an opening along the circumferential direction for clamping the blades. The wheel shaft is also sleeved with a positioning cylinder having a positioning plate clamped between the blades and the adjacent clamping portion. The end of the wheel shaft is screwed with a locking nut that is tightly pressed against the positioning cylinder.

2. The air supply device of the gravity concentrator according to claim 1, characterized in that: The clamping portion is arranged along the axial direction of the wheel axle.

3. The air supply device of the gravity concentrator according to claim 2, characterized in that: The clamping parts are evenly distributed along the circumference of the wheel axle.

4. The air supply device of the gravity concentrator according to claim 3, characterized in that: The clamping portion defines an arc-shaped clamping groove.

5. The air supply device of the gravity concentrator according to claim 4, characterized in that: The root of the fan blade is provided with a clamping plate adapted to the clamping groove.

6. The air supply device of the gravity concentrator according to claim 5, characterized in that: The positioning plate is configured to be an arc-shaped plate that matches the outer shape of the wheel axle.

7. The air supply device of the gravity concentrator according to claim 6, characterized in that: The ends of the wheel axles are provided with coaxially arranged connecting sections.

8. The air supply device of the gravity concentrator according to claim 7, characterized in that: The outer diameter of the connecting section is smaller than the outer diameter of the wheel axle.

9. The air supply device of the gravity concentrator according to claim 8, characterized in that: The locking nut is screwed onto the connecting section.

10. The air supply device of the gravity concentrator according to claim 9, characterized in that: The shell is provided with an end cover for supporting the connecting section.

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