Adjustable axial flow fan blade pitch structure

Abstract

The utility model relates to the technical field of fan blade pitch adjustment, and discloses an adjustable axial flow fan blade pitch structure which comprises a placing plate, a bearing seat is arranged at the top of the placing plate, a limiting locking assembly is arranged at the top of the bearing seat, and an adjusting fixing assembly is arranged on the surface of the limiting locking assembly. The limiting and locking assembly comprises a shaft seat, an air pump part and a connecting block, the shaft seat is connected to the top of the bearing seat, and the center of the shaft seat is aligned with the center of the bearing seat. According to the structure capable of adjusting the blade pitch of the axial flow fan, the limiting locking assembly is arranged, an air pump part is started to be matched with a conveying air pipe box to communicate with internal input air of an air pipe, second air bag parts on the left side and the right side are inflated and expanded at the same time, anti-skid clamping blocks are driven to get close to each other to clamp a connecting strip plate, and therefore locking is achieved; a bolt fixing mode is not adopted during fixing, rapid locking can be achieved after tiny adjustment, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan blade pitch adjusting technical field, concretely is a kind of adjustable axial fan blade pitch structure. BACKGROUND

[0002] As a common ventilation equipment, axial fan is widely used in industrial production, building ventilation, power, aerospace and many other fields due to its advantages of large flow, low wind pressure and simple structure.

[0003] The prior art discloses a publication number: CN221074730U adjustable axial fan blade pitch structure relates to the technical field of fan blade pitch structure, including blade mounting seat, annular cavity is set in the inside of blade mounting seat, upper annular through slot is set in the upper surface of blade mounting seat, side annular through slot is set in the side surface of blade mounting seat, the top end inner wall and bottom end inner wall of annular cavity are fixedly connected with fixed column, one end of fixed column away from annular cavity inner wall is fixedly connected with annular slide rod, a plurality of slide sleeves are slidably connected to the outer surface of annular slide rod, fan blade is fixedly connected to the outer side of slide sleeve, one end of fan blade away from slide sleeve is movably passed through side annular through slot and then extended to outside, the upper surface of slide sleeve is fixedly connected with connecting rod, one end of connecting rod away from slide sleeve is movably passed through upper annular through slot and then fixedly connected with push block;The flexibility of blade pitch adjustment can be improved by the cooperation of the above structure.

[0004] The adjustable axial fan blade pitch structure can drive the fan blades to move along the side annular through slot by moving the slide sleeve until the two fan blades are close or far away from each other, thereby adjusting the distance between the two fan blades;The flexibility of blade pitch adjustment can be improved by the cooperation of the above structure, but the locking of the above-mentioned components during adjustment utilizes bolts and other structures, and the bolts are prone to misalignment during minor adjustment, which affects the use effect and needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an adjustable axial fan blade pitch structure to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: an adjustable axial fan blade pitch structure, including placement plate piece, the top of placement plate piece is provided with bearing seat, the top of bearing seat is provided with limit locking assembly, the surface of limit locking assembly is provided with adjustment fixing assembly.

[0007] The limiting and locking assembly comprises an axle seat, an air pump piece and a connecting block, the axle seat is connected to the top of the bearing seat, the center of the axle seat is aligned with the center of the bearing seat, the top of the axle seat is fixedly connected with a connecting disc, the top of the connecting disc is fixedly connected with a center connecting plate, the surface of the center connecting plate is fixedly connected with a connecting strip plate, the top of the connecting block is fixedly connected with a first air bag piece, the top of the first air bag piece is fixedly connected with an anti-skid clamp block, the connecting strip plate is connected to the top of the first air bag piece, the anti-skid clamp block is connected to the side surface of the connecting strip plate, the right side of the first air bag piece is fixedly connected with a communication air pipe, the second air bag piece is fixedly connected to the top of the connecting block on the right side, the communication air pipe is fixedly connected between adjacent first air bag pieces, the air pump piece is fixedly connected to the top of the extended fan blade, and the top of the air pump piece is fixedly connected with a conveying air pipe.

[0008] Preferably, the adjusting and fixing assembly comprises an extended fan blade, a fan plate, a connecting frame, a sliding frame plate, a sliding block, a fixing bolt, a limiting ring piece, a locking bolt and an insertion square block, the insertion square block is inserted into the inside of the axle seat, the connecting frame is fixedly connected to the top of the insertion square block, the sliding frame plate is fixedly connected to the right side of the connecting frame, the sliding block is slidingly connected to the surface of the sliding frame plate, the fixing bolt is threadedly connected to the inside of the sliding block, the extended fan blade is fixedly connected to the surface of the fan plate, the limiting ring piece is fixedly connected to the top of the connecting disc, the inner ring of the limiting ring piece is provided with an internal thread groove, and the locking bolt is threadedly connected to the inside of the limiting ring piece and the inside of the insertion square block.

[0009] Preferably, the inside of the axle seat is provided with a butt joint insertion slot, the width of the butt joint insertion slot is matched with the width of the insertion square block, the connecting block is fixedly connected to the top of the extended fan blade, the butt joint insertion slot can allow the insertion of the insertion square block, different diameter sizes of the extended fan blade and the fan plate can be inserted and installed according to requirements, and the matching degree is high.

[0010] Preferably, one end of the conveying air pipe away from the top of the air pump piece is fixedly connected to the bottom center of the communication air pipe.

[0011] Preferably, the bottom of the fan plate is fixedly connected with a sliding block, the width of the sliding block is matched with the distance between the two sides in the inside of the connecting frame, the sliding block is slidingly connected to the inside of the connecting frame, the sliding block is also connected between the fan plate and the insertion square block through the sliding block and the connecting frame, the sliding block can slide and adjust the distance in the inside of the connecting frame, and the fixing bolt is used for locking during fixing, and the adjusting process is completed.

[0012] Preferably, the left side of the sliding block is fixedly connected with a connecting strip, the connecting strip is fixedly connected to the front surface of the sliding block, the front surface of the connecting frame is provided with a sliding groove, and the thickness of the sliding groove is matched with the thickness of the connecting strip.

[0013] Preferably, the interior of the sliding block is provided with a threaded groove, the front surface of the sliding block is provided with a connecting threaded hole with the same aperture as the threaded groove, and the fixing bolt is threadedly connected to the front surface of the sliding block.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1、This adjustable axial flow fan blade pitch structure passes through setting limit locking assembly, starts air pump piece cooperation conveying air pipe box intercommunication air pipe's inside input gas, makes left and right sides' second air bag spare inflation expansion simultaneously, drives anti -skid clamp block to be close to each other and clamps strip plate, to realize locking, when fixing, it is without adopting the mode of bolt fixation, after appearing tiny adjustment, also can lock fast, use effectual.

[0016] 2、This adjustable axial flow fan blade pitch structure passes through setting with adjusting fixed assembly, inserts into the inside of axle seat with the insertion block, continuously promotes to the inside until cannot continue to promote, then can twist locking bolt to the inside of limit ring spare, until has entered the inside of insertion block and locks, cooperation sliding block and the second adjusting assembly of connecting frame, the adjusting range is big, convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the utility model Figure 1 It is the enlarged structure schematic diagram of A place in the utility model;

[0019] Figure 3 It is the three-dimensional structure schematic diagram of limit locking assembly of the utility model;

[0020] Figure 4 It is the utility model Figure 3 It is the enlarged structure schematic diagram of B place in the utility model.

[0021] In the drawing: 1, placing plate spare;2, bearing seat;3, limit locking assembly;301, axle seat;302, connecting round sheet;303, center connecting plate;304, connecting strip plate;305, connecting block;306, first air bag spare;307, anti -skid clamp block;308, intercommunication air pipe;309, second air bag spare;310, air pump spare;311, conveying air pipe;4, adjusting fixed assembly;401, extension fan blade;402, fan plate;403, connecting frame;404, sliding frame board;405, sliding block;406, fixed bolt;407, limit ring spare;408, locking bolt;409, insertion block. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0023] Please refer to Figures 1-4 The present application provides the following technical solutions:

[0024] The adjustable axial flow fan blade pitch structure comprises a placement plate 1, the top of the placement plate 1 is provided with a bearing seat 2, the top of the bearing seat 2 is provided with a limiting locking assembly 3, and the surface of the limiting locking assembly 3 is provided with an adjusting and fixing assembly 4.

[0025] The limiting locking assembly 3 comprises a shaft seat 301, a gas pump 310 and a connecting block 305, the shaft seat 301 is connected to the top of the bearing seat 2, the center of the shaft seat 301 is aligned with the center of the bearing seat 2, the top of the shaft seat 301 is fixedly connected with a connecting disc 302, the top of the connecting disc 302 is fixedly connected with a center connecting plate 303, the surface of the center connecting plate 303 is fixedly connected with a connecting strip plate 304, the top of the connecting block 305 is fixedly connected with a first air bag 306, the top of the first air bag 306 is fixedly connected with an anti-skid clamp block 307, the connecting strip plate 304 is connected to the top of the first air bag 306, the anti-skid clamp block 307 is connected to the side surface of the connecting strip plate 304, the right side of the first air bag 306 is fixedly connected with a communication air pipe 308, a second air bag 309 is fixedly connected to the top of the right connecting block 305, the communication air pipe 308 is fixedly connected between adjacent first air bags 306, the gas pump 310 is fixedly connected to the top of an extended fan blade 401, the top of the gas pump 310 is fixedly connected with a conveying air pipe 311, a butt joint insertion groove is formed in the inside of the shaft seat 301, the width of the butt joint insertion groove is adapted to the width of an insertion square block 409, the connecting block 305 is fixedly connected to the top of the extended fan blade 401, the butt joint insertion groove can allow the insertion square block 409, different diameter sizes of the extended fan blade 401 and the fan plate 402 can be inserted and installed according to requirements, the adaptation degree is high, and one end of the conveying air pipe 311, which is away from the top of the gas pump 310, is fixedly connected to the bottom center of the communication air pipe 308.

[0026] The adjusting and fixing assembly 4 comprises an extended fan blade 401, a fan plate 402, a connecting frame 403, a sliding frame plate 404, a sliding block 405, a fixing bolt 406, a limiting ring 407, a locking bolt 408 and an inserted cuboid 409, the inserted cuboid 409 is inserted into the inside of the shaft base 301, the connecting frame 403 is fixedly connected to the top of the inserted cuboid 409, the sliding frame plate 404 is fixedly connected to the right side of the connecting frame 403, the sliding block 405 is slidingly connected to the surface of the sliding frame plate 404, the fixing bolt 406 is threadedly connected to the inside of the sliding block 405, the extended fan blade 401 is fixedly connected to the surface of the fan plate 402, the limiting ring 407 is fixedly connected to the top of the connecting disc 302, the inner ring of the limiting ring 407 is provided with an internal thread groove, the locking bolt 408 is threadedly connected to the inside of the limiting ring 407, the locking bolt 408 is threadedly connected to the inside of the inserted cuboid 409, the inside of the sliding block 405 is provided with a thread groove, the front surface of the sliding block is provided with a connecting thread hole with the same hole diameter as the thread groove, the fixing bolt 406 is threadedly connected to the front surface of the sliding block, the bottom of the fan plate 402 is fixedly connected with a sliding block, the width of the sliding block is adapted to the distance between the two sides of the inside of the connecting frame 403, the sliding block is slidingly connected to the inside of the connecting frame 403, the fan plate 402 and the inserted cuboid 409 are also connected through the sliding block and the connecting frame 403, the sliding block can slide back and forth in the inside of the connecting frame 403 to adjust the distance, the fixing bolt 406 is used to lock when fixing, the adjusting process is completed, the left side of the sliding block 405 is fixedly connected with a connecting strip, the connecting strip is fixedly connected to the front surface of the sliding block, the front surface of the connecting frame 403 is provided with a sliding groove, the thickness of the sliding groove is adapted to the thickness of the connecting strip.

[0027] In use, the insert block 409 is inserted into the inside of the shaft seat 301, continuously pushed inward until it cannot continue to push, at this time the threaded groove inside the limiting ring piece 407 is aligned with the threaded groove body on the top of the insert block 409, then the locking bolt 408 is screwed into the inside of the limiting ring piece 407, screwed downward until it has entered the inside of the insert block 409 to lock, and the fan plate 402 and the insert block 409 are also connected through the sliding block and the connecting frame 403, the sliding block enters the inside of the connecting frame 403 and can slide forward and backward, adjusting the distance of the blade to the center of the connecting disc 302, after adjustment, the fixed bolt 406 can be used to lock, complete the adjustment process, and the limiting locking assembly 3 is arranged on the top of the adjusting and fixing assembly 4, in use, the connecting strip plate 304 is connected to the top of the first air bag piece 306 on the top end of the connecting block 305, and can slide forward and backward to slide the position of the fan plate 402, so that the connecting strip plate 304 is attached to the top of the first air bag piece 306 and slides forward and backward, when locking is needed, the air pump piece 310 can be started to cooperate with the inside of the air pipe 308 connected with the air pipe 311 box to input gas, so that the left and right two second air bag pieces 309 are inflated and expanded at the same time, drive the anti-skid clamp block 307 to approach each other and clamp the connecting strip plate 304, so as to realize locking, when fixing, the bolt fixing method is not used, after a small adjustment, it can also be quickly locked, and the use effect is good.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An adjustable axial fan blade pitch structure comprising a placement plate member (1), characterized in that: The top of the placing plate (1) is provided with a bearing seat (2), the top of the bearing seat (2) is provided with a limiting locking assembly (3), the surface of the limiting locking assembly (3) is provided with an adjusting fixing assembly (4); The limiting locking assembly (3) comprises an axle seat (301), an air pump piece (310) and a connecting block (305), the axle seat (301) is connected to the top of the bearing seat (2), the center of the axle seat (301) is aligned with the center of the bearing seat (2), the top of the axle seat (301) is fixedly connected with a connecting disc (302), the top of the connecting disc (302) is fixedly connected with a center connecting plate (303), the surface of the center connecting plate (303) is fixedly connected with a connecting strip plate (304), the top of the connecting block (305) is fixedly connected with a first air bag piece (306), the top of the first air bag piece (306) is fixedly connected with an anti-skid clamp block (307), the connecting strip plate (304) is connected to the top of the first air bag piece (306), the anti-skid clamp block (307) is connected to the side surface of the connecting strip plate (304), the right side of the first air bag piece (306) is fixedly connected with a communicating air pipe (308), the top of the connecting block (305) on the right side is fixedly connected with a second air bag piece (309), the communicating air pipe (308) is fixedly connected between adjacent first air bag pieces (306), the air pump piece (310) is fixedly connected to the top of the extended fan blade (401), and the top of the air pump piece (310) is fixedly connected with a conveying air pipe (311).

2. An adjustable axial fan blade pitch arrangement according to claim 1, wherein: The adjusting fixing assembly (4) comprises an extended fan blade (401), a fan plate (402), a connecting frame (403), a sliding frame plate (404), a sliding block (405), a fixed bolt (406), a limiting ring piece (407), a locking bolt (408) and an insertion cube (409), the insertion cube (409) is inserted into the inside of the axle seat (301), the connecting frame (403) is fixedly connected to the top of the insertion cube (409), the sliding frame plate (404) is fixedly connected to the right side of the connecting frame (403), the sliding block (405) is slidingly connected to the surface of the sliding frame plate (404), the fixed bolt (406) is threadedly connected to the inside of the sliding block (405), the extended fan blade (401) is fixedly connected to the surface of the fan plate (402), the limiting ring piece (407) is fixedly connected to the top of the connecting disc (302), the inner ring of the limiting ring piece (407) is provided with an internal thread groove, and the locking bolt (408) is threadedly connected to the inside of the limiting ring piece (407) and the inside of the insertion cube (409).

3. An adjustable axial fan blade pitch arrangement according to claim 2, wherein: The inside of the axle seat (301) is provided with a butt joint insertion slot, the width of the butt joint insertion slot is matched with the width of the insertion cube (409), and the connecting block (305) is fixedly connected to the top of the extended fan blade (401).

4. An adjustable axial fan blade pitch arrangement according to claim 1, wherein: The conveying air pipe (311) is fixedly connected to the bottom center of the communicating air pipe (308) away from the top of the air pump element (310).

5. An adjustable axial fan blade pitch arrangement according to claim 2, wherein: The bottom of the fan plate (402) is fixedly connected with a sliding block, the width of the sliding block is matched with the distance between the two sides of the inner part of the connecting frame (403), and the sliding block is slidingly connected to the inner part of the connecting frame (403).

6. An adjustable axial fan blade pitch arrangement according to claim 2, wherein: The left side of the sliding block (405) is fixedly connected with a connecting strip, the connecting strip is fixedly connected to the front surface of the sliding block, the front surface of the connecting frame (403) is provided with a sliding groove, and the thickness of the sliding groove is matched with the thickness of the connecting strip.

7. An adjustable axial fan blade pitch arrangement according to claim 5, wherein: The inner part of the sliding block (405) is provided with a threaded groove, the front surface of the sliding block is provided with a connecting threaded hole with a hole diameter matched with the threaded groove, and the fixed bolt (406) is threadedly connected to the front surface of the sliding block.

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