CN205805983U - A kind of power plant fans anti kickback attachment - Google Patents
A kind of power plant fans anti kickback attachment Download PDFInfo
- Publication number
- CN205805983U CN205805983U CN201620799572.5U CN201620799572U CN205805983U CN 205805983 U CN205805983 U CN 205805983U CN 201620799572 U CN201620799572 U CN 201620799572U CN 205805983 U CN205805983 U CN 205805983U
- Authority
- CN
- China
- Prior art keywords
- spline
- voussoir
- rotary sleeve
- shifting chute
- snap ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
nullThis utility model one power plant fans anti kickback attachment，It is characterized in that rotary sleeve side is equipped with annular groove，Multiple installation hole slot is uniformly had on fixing snap ring side，Annular protrusion it is equipped with on opposite side，Three spline grooves are spaced on 120 ° of outward flanges being placed in fixing snap ring two-by-two，Multiple fixing slot are homogeneously disposed on rotary sleeve，Three blades are uniformly distributed and are placed on rotary sleeve，Three anti-rotation blocks are spaced 120 ° of one end two-by-two and are respectively placed on rotary sleeve，Three anti-rotation block side correspondences respectively are placed in three blade side，Shifting chute is had on anti-rotation block，Run through gathering sill to be placed on anti-rotation block，And connect with shifting chute，Spline voussoir is placed in shifting chute，Shifting chute is built-in with cushion rubber bumper，Limited block one end is vertically arranged on spline voussoir，The other end passes from running through gathering sill，Spline voussoir in three anti-rotation block shifting chutes and three spline groove one_to_one corresponding of fixing snap ring.
Description
Technical field
This utility model one power plant fans anti kickback attachment, relates to the anti-reversing dress used on a kind of power plant fans blade
Put, belong to electric power factory equipment field.When stopping operation particularly to a kind of blower fan, it is possible to prevent the device that blade reverses.
Background technology
Heat power plant boiler primary air system is generally individually equipped with two primary air fans, corresponding with air prewarming device case,
Being distributed in boiler both sides, two Fans export the breeze doors are louvered wind blocking door, and two fan outlet air channels are interconnected, and form boiler
Primary air system, and there is down certain inleakage in louvered wind blocking door, can cause when blower fan single side runs
First air blows back into blower fan side out of service, blows several pages of blower fan and rotates backward, and blower fan reverse speed is up to 100 turns every point
Clock, when starting stoppage in transit side fan operation in the case of lid, by expanded motor starting torque, easily burns motor or damages shaft coupling
Device, is likely to cause fan shaft to twist off simultaneously, is that blower fan loses operating capability, runs at boiler ignition start or boiler at low load
Time, primary air fan all can be in unilateral operation, in order to ensure equipment safety, prevents the draught fan impeller reversing of not actuated side, tradition
Method is that fan shaft system uses wooden unit folder wedge anti-rotation, during fan starting, then the timber wedge in good time taking out anti-rotation by operator, deposit
In certain personal hidden danger, alternatively, it is also possible to select electronic band-type brake, but electronic band-type brake need to carry out targeted design, system
Causing high, volume is big, and installing space is limited, it is necessary to have electric automatic control loop to coordinate the start and stop of blower fan, system complex,
Security reliability is risky.
Summary of the invention
In order to improve above-mentioned situation, this utility model one power plant fans anti kickback attachment provides a kind of blower fan to be stopped making
During industry, it is possible to prevent the device that blade reverses.Simple in construction, convenient use.
This utility model one power plant fans anti kickback attachment is achieved in that this utility model one power plant fans
Anti kickback attachment is by fixing snap ring, installation hole slot, spline groove, spline voussoir, shifting chute, cushion rubber bumper, running through gathering sill, spline
Block, limited block, blade, fixing slot and rotary sleeve composition, rotary sleeve side is equipped with annular groove, on fixing snap ring side
Uniformly having multiple installation hole slot, opposite side is equipped with annular protrusion, three spline grooves are spaced 120 ° two-by-two and are placed in fixing snap ring
Outward flange on, multiple fixing slot are homogeneously disposed on rotary sleeve, and three blades are uniformly distributed and are placed on rotary sleeve, three
Anti-rotation block is spaced 120 ° of one end two-by-two and is respectively placed on rotary sleeve, and three anti-rotation block side correspondences respectively are placed in three blade-side
On face, anti-rotation block having shifting chute, run through gathering sill and be placed on anti-rotation block, and connect with shifting chute, spline voussoir is placed in shifting
In dynamic groove, shifting chute is built-in with cushion rubber bumper, and limited block one end is vertically arranged on spline voussoir, and the other end is from running through gathering sill
Pass, the spline voussoir in three anti-rotation block shifting chutes and three spline groove one_to_one corresponding of fixing snap ring.
During use, use screw through fixing slot, rotary sleeve is arranged on blower fan main shaft, use screw through peace
Dress hole slot, by fixed mount mounted externally for fixing snap ring or blower housing, makes the annular protrusion on fixing snap ring be placed in rotation
In annular groove on axle sleeve, when blower fan stops when, spline voussoir under gravity, the shifting chute along anti-rotation block
Sliding in the spline groove on fixing snap ring, spline voussoir is stuck in spline groove, and the blower fan starting side rotates, and blows blade
Turn, during blade reversing, drive the spline voussoir reversing on anti-rotation block, in spline voussoir can be stuck in spline groove during reversing, it is possible to have
Effect prevents fan blade from reversing, and when fan starting when, blower fan main shaft rotates forward, and axle sleeve can be rotated and rotate, this
Time three anti-rotation blocks also and then rotate, spline voussoir under the influence of centrifugal force, can slide by the shifting chute along anti-rotation block outward,
Leaving spline groove, limited block edge is run through gathering sill and is moved, plays position-limiting action, and now spline groove no longer blocks spline voussoir, rotation
Rotating shaft cuff moving vane rotates, and can normally work, the design of described cushion rubber bumper, it is possible to prevent spline voussoir to anti-rotation block
On shifting chute cause damage, reach blower fan when stopping operation, it is possible to prevent the purpose that blade reverses.
Beneficial effect
One, simple in construction, convenient and practical.
Two, with low cost, it is easy to promote.
Accompanying drawing explanation
Accompanying drawing 1 is the three-dimensional structure diagram of this utility model a kind of power plant fans anti kickback attachment.
In accompanying drawing
Wherein part is: fixing snap ring (1), installs hole slot (2), spline groove (3), spline voussoir (4), shifting chute (5), delays
Rush rubber cushion (6), run through gathering sill (7), anti-rotation block (8), limited block (9), blade (10), fixing slot (11), rotary sleeve
(12)。
Detailed description of the invention:
When this utility model one power plant fans anti kickback attachment is achieved in that use, use screw through fixing
Hole slot (11), is arranged on rotary sleeve (12) on blower fan main shaft, uses screw through installing hole slot (2) by fixing snap ring (1)
On fixed mount mounted externally or blower housing, the annular protrusion on fixing snap ring (1) is made to be placed on rotary sleeve (12)
In annular groove, when blower fan stops when, spline voussoir (4) under gravity, the shifting chute on anti-rotation block (8)
(5) sliding in the spline groove (3) on fixing snap ring (1), spline voussoir (4) is stuck in spline groove (3), and the blower fan starting side turns
Dynamic, blow blade (10) reversing, during blade (10) reversing, drive spline voussoir (4) reversing on anti-rotation block (8), during reversing only
Turn voussoir (4) can be stuck in spline groove (3), it is possible to effectively prevent fan blade (10) from reversing, and when fan starting when, wind
Owner's axle rotates forward, and axle sleeve (12) can be rotated and rotate, and now three anti-rotation blocks (8) also and then rotate, spline voussoir (4)
Under the influence of centrifugal force, can slide outward by the shifting chute (5) along anti-rotation block (8), leave spline groove (3), limited block (9) edge
Running through gathering sill (7) mobile, play position-limiting action, now spline groove (3) no longer blocks spline voussoir (4), rotary sleeve (12)
Band moving vane (10) rotates, and can normally work, the design of described cushion rubber bumper (6), it is possible to prevent spline voussoir (4) to only
Shifting chute (5) on switch block (8) causes damage, reaches blower fan when stopping operation, it is possible to prevent the purpose that blade (10) reverses.
Claims (1)
1. a power plant fans anti kickback attachment, is characterized in that: by fixing snap ring, install hole slot, spline groove, spline voussoir, shifting
Move groove, cushion rubber bumper, run through gathering sill, anti-rotation block, limited block, blade, fixing slot and rotary sleeve composition, rotary sleeve one
Side has annular groove, and fixing snap ring side uniformly has multiple installation hole slot, and opposite side is equipped with annular protrusion, and three only
Turn trough is spaced on 120 ° of outward flanges being placed in fixing snap ring two-by-two, and multiple fixing slot are homogeneously disposed on rotary sleeve, three leaves
Sheet is uniformly distributed and is placed on rotary sleeve, and three anti-rotation blocks are spaced 120 ° of one end two-by-two and are respectively placed on rotary sleeve, and three only
Switch block side correspondence respectively is placed in three blade side, and anti-rotation block has shifting chute, runs through gathering sill and is placed on anti-rotation block,
And connect with shifting chute, spline voussoir is placed in shifting chute, and shifting chute is built-in with cushion rubber bumper, and limited block one end is only vertically arranged in
Turning on voussoir, the other end passes from running through gathering sill, the spline voussoir in three anti-rotation block shifting chutes and the three of fixing snap ring
Individual spline groove one_to_one corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799572.5U CN205805983U (en) | 2016-07-22 | 2016-07-22 | A kind of power plant fans anti kickback attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799572.5U CN205805983U (en) | 2016-07-22 | 2016-07-22 | A kind of power plant fans anti kickback attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805983U true CN205805983U (en) | 2016-12-14 |
Family
ID=57507409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620799572.5U Expired - Fee Related CN205805983U (en) | 2016-07-22 | 2016-07-22 | A kind of power plant fans anti kickback attachment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205805983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131313A (en) * | 2017-12-18 | 2018-06-08 | 联想(北京)有限公司 | A kind of fan and terminal |
-
2016
- 2016-07-22 CN CN201620799572.5U patent/CN205805983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131313A (en) * | 2017-12-18 | 2018-06-08 | 联想(北京)有限公司 | A kind of fan and terminal |
| CN108131313B (en) * | 2017-12-18 | 2019-12-24 | 联想(北京)有限公司 | Fan and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20170722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |