An improved centrifugal fan blade

Abstract

The invention discloses an improved centrifugal fan blade in the technical field of fan blades, comprising a mounting block, a center hole is provided in the middle of the mounting block, a clamping groove is symmetrically provided on the inner wall of the center hole, a main shaft is clamped and arranged inside the center hole, a cavity is provided inside the main shaft, limiting sliding holes and fine holes are symmetrically provided on the inner wall of the cavity, a main shaft clamping mechanism is connected inside the cavity, a plurality of mounting grooves are evenly provided on the outer side of the mounting block, two slots are provided on the inner wall of the mounting groove, a connecting block is provided inside the mounting groove, two through holes are provided on the connecting block, a blade is connected to the outer end of the connecting block, and a connecting block limiting mechanism is provided in the mounting groove; the invention drives the screw to rotate by rotating a turning handle, drives the U-shaped threaded block to move, separates it from the through hole and the slot, and can rotate the rotating plate and the U-shaped mounting block, so as to facilitate the removal of the connecting block from the mounting groove, realize the disassembly of the blade, and facilitate the cleaning and maintenance thereof.

Description

Technical Field

[0001] The invention relates to the technical field of fan blades, and in particular to an improved centrifugal fan blade. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fan is China's customary abbreviation for gas compression and gas delivery machinery. The fans usually mentioned include ventilators, blowers, and wind turbines. Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] Fans can be classified into centrifugal, axial, diagonal and cross-flow types according to the direction of gas flow. Centrifugal fan blades are widely used in various ventilation equipment, such as air conditioning devices or ventilation and exhaust devices. Traditional centrifugal fan blades have a single structure, which is not easy to install and disassemble, and it is inconvenient to operate when cleaning is needed.

[0004] Therefore, there is an urgent need to design an improved centrifugal fan blade. Summary of the invention

[0005] The object of the present invention is to provide an improved centrifugal fan blade to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an improved centrifugal fan blade, comprising a mounting block, a center hole is provided in the middle of the mounting block, and a card slot is symmetrically provided on the inner wall of the center hole, a main shaft is card-connected inside the center hole, a cavity is provided inside the main shaft, and limiting sliding holes and fine holes are symmetrically provided on the inner wall of the cavity, a main shaft card mechanism is connected to the inside of the cavity, a plurality of mounting grooves are evenly provided on the outer side of the mounting block, two slots are provided on the inner wall of the mounting groove, a connecting block is provided inside the mounting groove, two through holes are provided on the connecting block, a blade is connected to the outer end of the connecting block, and a connecting block limiting mechanism is provided in the mounting groove.

[0007] Furthermore, in the above-mentioned improved centrifugal fan blade, an annular stopper is fixed to the inner wall of the central hole.

[0008] Furthermore, in the above-mentioned improved centrifugal fan blade, the main shaft clamping mechanism includes a fixed sliding rod, an annular frame, a short block, a thin rod, a slider, a connecting rod and a clamping block, the fixed sliding rod is fixed to the inside of the cavity, the outer sliding sleeve of the fixed sliding rod is provided with a sliding rod, both sides of the slider are hingedly connected to the connecting rod, the other end of the connecting rod is hingedly connected to the clamping block, the clamping block is slidably arranged inside the thin hole, the clamping block is clamped with the clamping groove, the outer end of the slider is symmetrically fixed with a thin rod, the outer end of the thin rod is fixed with a short block, the outer ends of the two short blocks are fixed with an annular frame, the annular frame is slidably sleeved on the outside of the main shaft, and a number of adjusting bolts are screwed on the annular frame.

[0009] Furthermore, in the above-mentioned improved centrifugal fan blade, the connecting block limiting mechanism includes a rotating shaft, a rotating plate, a U-shaped mounting block and a positioning assembly, the rotating shaft is arranged in the mounting groove, the outer fixed sleeve of the rotating shaft is provided with a rotating plate, the bottom end of the rotating plate is fixed with a U-shaped mounting block, and the U-shaped mounting block is connected to the positioning assembly.

[0010] Furthermore, in the above-mentioned improved centrifugal fan blade, the positioning assembly includes a screw, a U-shaped threaded block and a short block. The screw is rotatably set on the U-shaped mounting block. A handle is fixed to the outer end of the screw, and a short block is fixed to the inner end. The outer side of the screw is sleeved with a U-shaped threaded block. The U-shaped threaded block is slidably restricted in the U-shaped mounting block, and the two side ends of the U-shaped threaded block are clamped with corresponding through holes and slots.

[0011] Furthermore, in the above-mentioned improved centrifugal fan blade, reinforcing ribs are arranged inside the blade.

[0012] Furthermore, in the above-mentioned improved centrifugal fan blade, the mounting groove is configured in a stepped shape.

[0013] Furthermore, in the above improved centrifugal fan blade, the short block is slidably restricted in the limiting sliding hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention drives the screw to rotate by rotating the handle, driving the U-shaped threaded block to move, so that it is separated from the through hole and the slot, and the rotating plate and the U-shaped mounting block can be rotated to facilitate the removal of the connecting block from the mounting slot, thereby realizing the disassembly of the blade and facilitating its cleaning and maintenance.

[0016] 2. The present invention adjusts the position of the annular frame by rotating the adjusting bolt, and with the cooperation of the short block, thin rod, slider, connecting rod, etc., drives the card block to separate from the card slot, thereby realizing the separation of the main shaft and the center hole, thereby enhancing the structural flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a partial cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation slot structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the positioning component of the present invention;

[0022] Figure 5 It is a cross-sectional view of the main axis of the present invention;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1-mounting block, 2-connecting block, 3-blade, 4-center hole, 5-mounting groove, 7-connecting block limiting mechanism, 71-rotating shaft, 72-rotating plate, 73-UU-shaped mounting block, 74-positioning assembly, 741-screw, 742-U-shaped threaded block, 743-short block, 8-through hole, 9-cavity, 10-slot, 11-card slot, 12-annular stopper, 13-spindle, 14-limiting sliding hole, 15-spindle card mechanism, 151-fixed sliding rod, 152-annular frame, 153-short block, 154-thin rod, 155-slider, 156-connecting rod, 157-card block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] The present invention provides a technical solution: an improved centrifugal fan blade, comprising a mounting block 1, a center hole 4 is provided in the middle of the mounting block 1, an annular stopper 12 is fixed to the inner wall of the center hole 4, a clamping groove 11 is symmetrically provided on the inner wall of the center hole 4, a main shaft 13 is clamped inside the center hole 4, a cavity 9 is provided inside the main shaft 13, a limiting sliding hole 14 and a fine hole 16 are symmetrically provided on the inner wall of the cavity 9, a main shaft clamping mechanism 15 is connected inside the cavity 9, a plurality of mounting grooves 5 are evenly provided on the outer side of the mounting block 1, the mounting grooves 5 are arranged in a stepped shape, two slots 10 are provided on the inner wall of the mounting groove 5, a connecting block 2 is provided inside the mounting groove 5, two through holes 8 are provided on the connecting block 2, a blade 3 is connected to the outer end of the connecting block 2, a reinforcing rib is provided inside the blade 3, and a connecting block limiting mechanism 7 is provided inside the mounting groove 5.

[0028] Embodiment 2

[0029] Based on the improved centrifugal fan blade provided in the first embodiment of the present application, the second embodiment of the present application provides another improved centrifugal fan blade. The second embodiment is only a further embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0030] The second embodiment of the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0031] Compared with the first embodiment, the present embodiment provides a specific spindle clamping mechanism 15 including a fixed slide bar 151, an annular frame 152, a short block 153, a thin rod 154, a slider 155, a connecting rod 156 and a clamping block 157. The fixed slide bar 151 is fixed to the inside of the cavity 9, and the outer sliding sleeve of the fixed slide bar 151 is provided with a slider 155. Both sides of the slider 155 are hingedly connected to the connecting rod 156, and the other end of the connecting rod 156 is hingedly connected to the clamping block 157. The clamping block 157 is slidably arranged in the inside of the thin hole 16, and the clamping block 157 is clamped with the slot 11. The outer end of the slider 155 is symmetrically fixed with the thin rod 154, and the outer end of the thin rod 154 is fixed with the short block 153. The short block 153 is slidably restricted in the limiting slide hole 14. The outer ends of the two short blocks 153 are fixed with an annular frame 152. The annular frame 152 is slidably sleeved on the outside of the spindle 13, and a plurality of adjusting bolts are screwed on the annular frame 152.

[0032] Embodiment 3

[0033] Based on the improved centrifugal fan blade provided in the first embodiment of the present application, the third embodiment of the present application provides another improved centrifugal fan blade. The third embodiment is only a further embodiment of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0034] The third embodiment of the present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0035] Compared with the first embodiment, the present embodiment provides a specific connection block limiting mechanism 7 including a rotating shaft 71, a rotating plate 72, a U-shaped mounting block 73 and a positioning assembly 74. The rotating shaft 71 is arranged in the mounting groove 5. The outer fixed sleeve of the rotating shaft 71 is provided with a rotating plate 72. The bottom end of the rotating plate 72 is fixed with a U-shaped mounting block 73, and the U-shaped mounting block 73 is connected to the positioning assembly 74.

[0036] The positioning assembly 74 includes a screw 741, a U-shaped threaded block 742 and a short block 743. The screw 741 is rotatably set on the U-shaped mounting block 73. A handle is fixed to the outer end of the screw 741, and a short block 743 is fixed to the inner end. The outer side of the screw 741 is sleeved with a U-shaped threaded block 742. The U-shaped threaded block 742 is slidably restricted in the U-shaped mounting block 73, and the two side ends of the U-shaped threaded block 742 are clamped with the corresponding through holes 8 and slots 10.

[0037] The working principle is:

[0038] When the blade 3 needs to be disassembled, the screw rod 741 is rotated to drive the U-shaped threaded block 742 to move and separate it from the through hole 8 and the slot 10, and the rotating plate 72 and the U-shaped mounting block 73 can be rotated to facilitate the removal of the connecting block 2 from the mounting slot 5, so as to realize the disassembly of the blade 3 and facilitate its cleaning and maintenance. The adjusting bolt is rotated to adjust the position of the annular frame 152, and the driving block 157 is separated from the slot 11 with the cooperation of the short block 153, the thin rod 154, the slider 155, the connecting rod 156, etc., so as to realize the separation of the main shaft 13 and the center hole 4, thereby enhancing the structural flexibility.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An improved centrifugal fan blade, comprising a mounting block (1), characterized in that: A central hole (4) is provided in the middle of the mounting block (1), and a clamping groove (11) is symmetrically provided on the inner wall of the central hole (4). A main shaft (13) is clamped and provided inside the central hole (4), and a cavity (9) is provided inside the main shaft (13). A limiting sliding hole (14) and a fine hole (16) are symmetrically provided on the inner wall of the cavity (9). A main shaft clamping mechanism (15) is connected inside the cavity (9). A plurality of mounting grooves (5) are evenly provided on the outer side of the mounting block (1), and two slots (10) are provided on the inner wall of the mounting groove (5). A connecting block (2) is provided inside the mounting groove (5), and two through holes (8) are provided on the connecting block (2). A blade (3) is connected to the outer end of the connecting block (2), and a connecting block limiting mechanism (7) is provided inside the mounting groove (5). The spindle locking mechanism (15) comprises a fixed slide bar (151), an annular frame (152), a short block (153), a thin rod (154), a slider (155), a connecting rod (156) and a clamping block (157). The fixed slide bar (151) is fixed inside the cavity (9). The outer sliding sleeve of the fixed slide bar (151) is provided with a slider (155). Both sides of the slider (155) are hingedly connected to the connecting rod (156). The other end of the connecting rod (156) is hingedly connected to the clamping block (157). The clamping block (157) is 57) is slidably arranged inside the thin hole (16), the clamping block (157) is clamped with the clamping groove (11), the outer end of the slider (155) is symmetrically fixed with a thin rod (154), the outer end of the thin rod (154) is fixed with a short block (153), the outer ends of the two short blocks (153) are fixed with an annular frame (152), the annular frame (152) is slidably sleeved on the outside of the main shaft (13), a plurality of adjusting bolts are screwed on the annular frame (152), and the short block (153) is slidably restricted in the limiting sliding hole (14); The connection block limiting mechanism (7) comprises a rotating shaft (71), a rotating plate (72), a U-shaped mounting block (73) and a positioning assembly (74); the rotating shaft (71) is arranged in the mounting groove (5); a rotating plate (72) is provided on the outer fixed sleeve of the rotating shaft (71); a U-shaped mounting block (73) is fixed to the bottom end of the rotating plate (72); and a positioning assembly (74) is connected to the U-shaped mounting block (73); the positioning assembly (74) comprises a screw rod (741), a U-shaped threaded rod (742), and a U-shaped threaded rod (743). The screw rod (741) is rotatably mounted on the U-shaped mounting block (73); a handle is fixed to the outer end of the screw rod (741); and a short block (743) is fixed to the inner end; a U-shaped threaded block (742) is sleeved on the outer side of the screw rod (741); the U-shaped threaded block (742) is slidably restricted in the U-shaped mounting block (73); and the two side ends of the U-shaped threaded block (742) are snap-fitted with corresponding through holes (8) and slots (10).

2. The improved centrifugal fan blade according to claim 1, characterized in that: An annular stopper (12) is fixed to the inner wall of the central hole (4).

3. The improved centrifugal fan blade according to claim 1, characterized in that: Reinforcing ribs are provided inside the blade (3).

4. The improved centrifugal fan blade according to claim 1, characterized in that: The mounting groove (5) is arranged in a stepped shape.

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