CN212774947U - Negative-pressure air fan's fan blade dismantles frock - Google Patents
Negative-pressure air fan's fan blade dismantles frock Download PDFInfo
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- CN212774947U CN212774947U CN202021149525.9U CN202021149525U CN212774947U CN 212774947 U CN212774947 U CN 212774947U CN 202021149525 U CN202021149525 U CN 202021149525U CN 212774947 U CN212774947 U CN 212774947U
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Abstract
The utility model discloses a frock is dismantled to negative-pressure air fan's fan blade relates to negative-pressure air fan maintenance technical field. The utility model comprises a motor, a screw thread cover and a rotating shaft, wherein four limit posts are arranged on an output shaft of the motor; a fixed seat is arranged above the motor; the upper surface of the fixed seat is provided with a through hole; the through hole is provided with three fan-shaped grooves in a delta shape; the threaded cover consists of two semicircular clamping covers which are hinged with each other; a U-shaped groove is formed above the clamping cover; the inner periphery of the threaded cover is provided with internal threads; three fan-shaped plates are arranged on the periphery of the bottom of the rotating shaft in a delta shape; the top end of the rotating shaft is provided with a fan blade. The utility model arranges the limiting hole matched with the motor output shaft at the bottom of the rotating shaft, and utilizes the fan-shaped plate at the bottom of the rotating shaft to be matched with the fan-shaped groove on the screw cap; and then the rotating shaft is fixed inside the fixing seat through the matching of the two semicircular clamping covers which are hinged with each other and the fixing seat, so that the fan on the rotating shaft is quickly disassembled, and the damage of the impeller is avoided.
Description
Technical Field
The utility model belongs to the technical field of negative-pressure air fan maintains, especially, relate to a frock is dismantled to negative-pressure air fan's fan blade.
Background
When the negative pressure fan motor is overhauled, the fan blades need to be disassembled and assembled, but the fan blades are installed in the volute and are not easy to disassemble and assemble. The existing method for disassembling and assembling the fan impeller mainly comprises the steps that the impeller is pressed by two hands, a locking nut is screwed off by a spanner, then a threaded hole is drilled at one end of a motor rotor, and a stud is screwed in; the impeller penetrates through the stud to abut against a positioning surface at one end of the rotor, and the impeller is fixed by a locking nut; the flow guide cone is screwed into the extended stud.
However, the traditional disassembling method requires a worker to press the impeller to be immobile, and the locking nut is unscrewed by using a wrench, because the pretightening force is large when the locking nut is installed, the wrench cannot be unscrewed by pure manpower, and at this time, the locking nut is often unscrewed by knocking the wrench by using a hammer. The disassembly method is high in danger, and on one hand, the edge of the impeller is sharp, so that hands are easy to scratch; on the other hand, lock nut easily causes the damage to the impeller among the spanner process of strikeing, and the impeller is the precision machined part, and its precision has crucial effect to the stability of fan, consequently must protect.
Therefore, the fan blade dismounting tool for the negative pressure fan is provided, and meanwhile, the impeller can be protected from being damaged, so that the technical problem to be solved in the field is solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a frock is dismantled to negative-pressure air fan's fan blade, through the sector plate that mutually supports with the screw thread lid in pivot bottom setting, the mutually supporting of sector plate and sector groove to utilize mutual articulated screw thread lid to form limit structure, solved current negative-pressure air fan and dismantled difficulty, the easy impaired problem of fan blade.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a fan blade dismounting tool of a negative pressure fan, which comprises a motor, a thread cover and a rotating shaft,
a plurality of limiting columns are arranged on an output shaft of the motor; a fixed seat is arranged above the motor; the fixed seat is a cover body; the upper surface of the fixed seat is provided with a through hole; the through hole is provided with three fan-shaped grooves in a delta shape;
the threaded cover consists of two semicircular clamping covers which are hinged with each other; a fixing plate is arranged on one side of the clamping cover; a U-shaped groove is formed above the clamping cover; the inner periphery of the threaded cover is provided with internal threads;
three fan-shaped plates are arranged on the periphery of the bottom of the rotating shaft in a delta shape; the bottom of the rotating shaft is provided with a plurality of limiting holes; the limiting hole is matched with the limiting column; the top end of the rotating shaft is provided with a fan blade.
Further, the output shaft is located inside the fixing base.
Further, an external thread is arranged on the periphery of the fixing part; the external thread is matched with the internal thread of the threaded cover; the diameter of the through hole is the same as that of the rotating shaft; the output shaft is located right below the through hole.
Furthermore, the fixing plates of the two clamping covers are fixedly connected through bolts.
The utility model discloses following beneficial effect has:
the utility model arranges the limiting hole matched with the motor output shaft at the bottom of the rotating shaft, and utilizes the fan-shaped plate at the bottom of the rotating shaft to be matched with the fan-shaped groove on the screw cap; and then the rotating shaft is fixed inside the fixing seat through the matching of the two semicircular clamping covers which are hinged with each other and the fixing seat, so that the fan on the rotating shaft is quickly disassembled, and the damage of the impeller is avoided.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a fan blade dismounting tool of a negative pressure fan of the present invention;
FIG. 2 is a schematic view of a motor structure;
FIG. 3 is a schematic view of a rotating shaft structure;
FIG. 4 is a bottom view of FIG. 3;
FIG. 5 is a schematic view of a card cover structure;
in the drawings, the components represented by the respective reference numerals are listed below:
1-motor, 2-screw cap, 3-rotating shaft, 4-fan blade, 5-fixing seat, 101-output shaft, 102-limiting column, 201-clamping cap, 202-fixing plate, 203-U-shaped groove, 301-sector plate, 302-limiting hole, 501-sector groove and 502-through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-5, the utility model relates to a blade dismounting tool of a negative pressure fan, which comprises a motor 1, a screw cap 2 and a rotating shaft 3,
four limiting columns 102 are arranged on an output shaft 101 of the motor 1; a fixed seat 5 is arranged above the motor 1; the fixed seat 5 is a cover body; the upper surface of the fixed seat 5 is provided with a through hole 502; the through hole 502 is provided with three fan-shaped grooves 501 in a delta shape;
the screw cap 2 consists of two mutually hinged semicircular clamping caps 201; a fixing plate 202 is arranged on one side of the card cover 201; a U-shaped groove 203 is formed above the clamping cover 201; the inner periphery of the screw cap 2 is provided with internal threads;
three fan-shaped plates 301 are arranged on the periphery of the bottom of the rotating shaft 3 in a delta shape; the bottom of the rotating shaft 3 is provided with four limiting holes 302; the limiting hole 302 is matched with the limiting column 102; the top end of the rotating shaft 3 is provided with a fan blade 4.
Wherein, output shaft 101 is located inside fixing base 5, is provided with the bearing in the fixing base 5, and sector plate 301 of 3 below in the pivot can just in time the joint in the bearing, reduces the frictional force that receives when pivot 3 rotates, makes the fan rotate more smoothly.
Wherein, the periphery of the fixed seat 5 is provided with an external thread; the external thread is matched with the internal thread of the threaded cover 2; the diameter of the through hole 502 is the same as that of the rotary shaft 3; the output shaft 101 is located directly below the through hole 502.
Wherein, the fixed plate 202 of two card covers 201 passes through bolt fixed connection, now with two card covers 201 joint on pivot 3 to fix locating plate 202 together through the bolt, make two card covers 201 constitute a lid of accomplishing, again with the lid spiro union on fixing base 5, prevent that pivot 3 from droing.
One specific application of this embodiment is:
when the fan blades are installed, the sector plate 301 of the rotating shaft 3 is put into the fixed seat 5 from the sector groove 501, the sector plate 301 and the sector groove 501 form limiting through slight rotation, the limiting hole 302 below the rotating shaft 3 is aligned with the limiting column 102 and inserted, and the rotating shaft 3 is fixed on the output shaft 101 of the motor 1;
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The utility model provides a frock is dismantled to negative-pressure air fan's fan blade, includes motor (1), screw cap (2) and pivot (3), its characterized in that:
a plurality of limiting columns (102) are arranged on an output shaft (101) of the motor (1); a fixed seat (5) is arranged above the motor (1); the fixed seat (5) is a cover body; a through hole (502) is formed in the upper surface of the fixed seat (5); the through hole (502) is provided with three fan-shaped grooves (501) in a delta shape;
the threaded cover (2) consists of two mutually hinged semicircular clamping covers (201); a fixing plate (202) is arranged on one side of the clamping cover (201); a U-shaped groove (203) is formed above the clamping cover (201); the inner periphery of the threaded cover (2) is provided with internal threads;
three fan-shaped plates (301) are arranged on the periphery of the bottom of the rotating shaft (3) in a delta shape; the bottom of the rotating shaft (3) is provided with a plurality of limiting holes (302); the limiting hole (302) is matched with the limiting column (102); the top end of the rotating shaft (3) is provided with a fan blade (4).
2. The fan blade dismounting tool of the negative pressure fan as claimed in claim 1, wherein the output shaft (101) is located inside the fixing seat (5).
3. The fan blade dismounting tool of the negative pressure fan as claimed in claim 1 or 2, wherein an external thread is arranged on the peripheral side of the fixed seat (5); the external thread is matched with the internal thread of the threaded cover (2); the diameter of the through hole (502) is the same as that of the rotating shaft (3); the output shaft (101) is located directly below the through hole (502).
4. The fan blade dismounting tool of the negative-pressure air fan as claimed in claim 1, wherein the fixing plates (202) of the two clamping covers (201) are fixedly connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021149525.9U CN212774947U (en) | 2020-06-19 | 2020-06-19 | Negative-pressure air fan's fan blade dismantles frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021149525.9U CN212774947U (en) | 2020-06-19 | 2020-06-19 | Negative-pressure air fan's fan blade dismantles frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212774947U true CN212774947U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021149525.9U Active CN212774947U (en) | 2020-06-19 | 2020-06-19 | Negative-pressure air fan's fan blade dismantles frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212774947U (en) |
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2020
- 2020-06-19 CN CN202021149525.9U patent/CN212774947U/en active Active
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