Exhaust fan blade assembly

Abstract

The utility model discloses an exhaust fan blade assembly which comprises a fan blade assembly body. The fan blade assembly is composed of blades and a mounting base, mounting grooves are formed in the periphery of the mounting base, mounting blocks are welded to the bottom ends of the blades and embedded into the mounting grooves, the sections of the mounting blocks and the sections of the mounting grooves are trapezoidal, and a fixing plate is arranged at the front end of the mounting base. Through holes are formed in the middle positions of the fixing plate and the mounting base, and the fixing plate is fixedly mounted on the upper side of the mounting base through screws. When the blades need to be replaced, the fixing plate is dismantled, at the moment, the installation blocks are dismantled from the interiors of the installation grooves, new blades are installed after the installation blocks are dismantled, the whole fan blade assembly does not need to be replaced, expenditure can be saved, unnecessary waste can be reduced, and when the fixing plate is installed, the fan blade assembly is convenient to install. And the inserting block is inserted into the mounting seat, so that the fixing plate can be calibrated, and the fixing plate can be conveniently mounted and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blades, in particular to an exhaust fan blade assembly. Background Art

[0002] Exhaust fan is a type of air conditioning appliance that uses a motor to drive the blades to rotate and drive the air flow to exchange indoor and outdoor air. It is also called a ventilation fan. The purpose of exhaust is to remove the dirty air in the room and adjust the temperature, humidity and sensory effect. Exhaust fans are widely used in homes and public places. When exhaust fans are used, they mainly use the motor to drive the blade assembly to rotate, thereby driving the air flow.

[0003] Chinese patent application number CN201820382871.8 discloses an integrated stamped blade for an industrial exhaust fan, characterized in that it includes a blade as a whole, a mounting sleeve, and a center hole for mounting the sleeve, the blade as a whole includes a plurality of blade sheets, the blade as a whole is stamped, the center of the blade as a whole is punched out by punching a center hole, and the mounting sleeve is fixedly installed in the center hole. In the prior art, the blades are arranged as a whole when in use. When a blade is damaged, the entire blade needs to be replaced, which is very inconvenient. Utility Model Content

[0004] The utility model aims to provide an exhaust fan blade assembly to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust fan blade assembly, including a blade assembly; the blade assembly is composed of a blade and a mounting seat, mounting grooves are arranged around the mounting seat, a mounting block is welded to the bottom end of the blade, the mounting block is embedded in the mounting groove, the mounting block and the mounting groove cross-section are both trapezoidal, a fixing plate is arranged at the front end of the mounting seat, a through hole is arranged in the middle of the fixing plate and the mounting seat, and the fixing plate is fixed to the upper side of the mounting seat by screws.

[0006] Preferably, a corrosion-resistant layer is provided on the outer side of the blade, and the corrosion-resistant layer is provided as a ceramic coating layer.

[0007] Preferably, a wear-resistant layer is provided on the outer side of the mounting block, and the wear-resistant layer is configured as a chrome-plated layer.

[0008] Preferably, a rubber pad is provided on the inner side of the fixing plate, and the rubber pad is adhered to the inside of the fixing plate by adhesive.

[0009] Preferably, a triangular plate is provided between the blade and the mounting block, and the triangular plate is welded to the bottom end of the blade and the upper side of the mounting plate.

[0010] Preferably, an insert block is provided on the inner side of the fixing plate, and the insert block is welded on the inner side of the fixing plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When the blades need to be replaced, the fixing plate is removed. At this time, the mounting block is removed from the inside of the mounting slot. After removal, the new blades are installed. There is no need to replace the entire fan blade assembly, which can not only save expenses but also reduce unnecessary waste;

[0013] 2. The setting of the wear-resistant layer can reduce the wear of the mounting block during use, and avoid the large wear of the mounting block, which causes the mounting block and the blade to shake during use;

[0014] 3. The setting of the triangular plate is used to support the bottom end of the blade and the mounting block, making the installation between the blade and the mounting block more stable;

[0015] 4. When installing the fixing plate, insert the plug into the mounting seat to calibrate the fixing plate, thereby facilitating the installation and fixation of the fixing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the blade of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the blade of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the mounting seat of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the fixing plate of the utility model.

[0022] In the figure: 1. fan blade assembly; 2. blade; 3. mounting seat; 4. through hole; 5. corrosion-resistant layer; 6. triangular plate; 7. mounting block; 8. wear-resistant layer; 9. fixing plate; 10. rubber pad; 11. plug block; 12. mounting groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 In the embodiment of the utility model, an exhaust fan blade assembly includes a blade assembly 1; the blade assembly 1 is composed of a blade 2 and a mounting seat 3, and mounting grooves 12 are arranged around the mounting seat 3. A mounting block 7 is welded to the bottom end of the blade 2, and the mounting block 7 is embedded in the mounting groove 12. The cross-sections of the mounting block 7 and the mounting groove 12 are both trapezoidal. A fixing plate 9 is arranged at the front end of the mounting seat 3, and a through hole 4 is arranged in the middle of the fixing plate 9 and the mounting seat 3. The fixing plate 9 is fixed to the upper side of the mounting seat 3 by screws.

[0025] The outer side of the blade 2 is provided with a corrosion-resistant layer 5, which is configured as a ceramic coating layer. The ceramic coating layer used in the corrosion-resistant layer 5 has strong corrosion resistance and wear resistance, which can reduce the wear of the blade 2 by the corrosive liquid during use and extend the use area of ​​the blade 2. The outer side of the mounting block 7 is provided with a wear-resistant layer 8, which is configured as a chrome-plated layer. The setting of the wear-resistant layer 8 can reduce the wear of the mounting block 7 during use and avoid the large wear of the mounting block 7, which causes the mounting block 7 and the blade 2 to shake during use. A triangular plate 6 is provided between the blade 2 and the mounting block 7, which is welded to the bottom end of the blade 2 and the upper side of the mounting plate. The setting of the triangular plate 6 is used to support the bottom end of the blade 2 and the mounting block 7, so that the installation between the blade 2 and the mounting block 7 is more stable.

[0026] A rubber pad 10 is provided on the inner side of the fixing plate 9, and the rubber pad 10 is adhered to the inside of the fixing plate 9 by adhesive. The texture of the rubber pad 10 is relatively soft. When the fixing plate 9 is installed, the rubber pad 10 will be deformed to fill the gap between the fixing plate 9 and the mounting seat 3, so that the installation of the fixing plate 9 is more stable; an insert block 11 is provided on the inner side of the fixing plate 9, and the insert block 11 is welded to the inner side of the fixing plate 9. When the fixing plate 9 is installed, the insert block is inserted into the mounting seat 3, so that the fixing plate 9 can be calibrated, thereby facilitating the installation and fixation of the fixing plate 9.

[0027] The working principle and use process of the utility model are as follows: when the blade 2 needs to be replaced, the fixing plate 9 is removed. At this time, the mounting block 7 is removed from the inside of the mounting groove 12. After the removal, the new blade 2 is installed. There is no need to replace the entire fan blade assembly 1, which can not only save expenses but also reduce unnecessary waste.

[0028] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust fan blade assembly, comprising a blade assembly (1); characterized in that: The fan blade assembly (1) is composed of a blade (2) and a mounting seat (3); the mounting seat (3) is provided with mounting grooves (12) at the surrounding positions; a mounting block (7) is welded to the bottom end of the blade (2); the mounting block (7) is embedded in the mounting groove (12); the cross-sections of the mounting block (7) and the mounting groove (12) are both trapezoidal; a fixing plate (9) is provided at the front end of the mounting seat (3); a through hole (4) is provided between the fixing plate (9) and the mounting seat (3); the fixing plate (9) is fixed to the upper side of the mounting seat (3) by screws; the outer side of the blade (2) is provided with a corrosion-resistant A corrosion-resistant layer (5) is provided on the outer side of the mounting block (7), and the corrosion-resistant layer (5) is provided as a ceramic coating layer; a wear-resistant layer (8) is provided on the outer side of the mounting block (7), and the wear-resistant layer (8) is provided as a chrome-plated layer; a rubber pad (10) is provided on the inner side of the fixing plate (9), and the rubber pad (10) is adhered to the inside of the fixing plate (9) by means of adhesive; a triangular plate (6) is provided between the blade (2) and the mounting block (7), and the triangular plate (6) is welded to the bottom end of the blade (2) and the upper side of the mounting plate; an insert block (11) is provided on the inner side of the fixing plate (9), and the insert block (11) is welded to the inner side of the fixing plate (9).

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