CN206175656U - Sealing device for pull rod of medium -speed coal mill - Google Patents
Sealing device for pull rod of medium -speed coal mill Download PDFInfo
- Publication number
- CN206175656U CN206175656U CN201621013250.XU CN201621013250U CN206175656U CN 206175656 U CN206175656 U CN 206175656U CN 201621013250 U CN201621013250 U CN 201621013250U CN 206175656 U CN206175656 U CN 206175656U
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- China
- Prior art keywords
- sealing
- pull bar
- sealing block
- sealed
- block
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- Expired - Fee Related
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Abstract
The utility model discloses a sealing device for pull rod of medium -speed coal mill includes: sealed piece and sealed piece base, the diameter and pull rod adaptation of body opening are gone up to a last body opening that sealed piece is inside to be run through about establishing and a body opening down, and the diameter of lower body opening is greater than the body opening, and the sealed block no. 1 and sealed block two components of sealed piece for vertically cutting open is equipped with the screw hole that is used for bolted connection on the sealed piece no. 1 and sealed two bolted connection of piece, sealed block no. 1, seal up a bolt through -hole that is used for bolted connection that is equipped with with threaded hole position looks adaptation on pieces two, a sealed piece base passes through the frame foundation to be established on the sealed plenum of coal pulverizer, be the through -hole in the middle of the sealed piece base, and diameter of hole is greater than the pull rod, and the through -hole is used for the pull rod to pass and seal wind getting into sealed piece, and sealed piece is installed on a sealed base through gravity, beneficial effect: removable assecmbly adopts the face seal, and is little with the pull rod clearance, and pull rod sealed piece when activity from top to bottom keeps motionless, and pull rod sealed piece when the horizontal hunting can be followed the pull rod and swung together.
Description
Technical field
The utility model is related to component of machine field, more particularly to a kind of medium-speed pulverizer used in thermal power plant
The sealing device of pull bar.
Background technology
Traditional pull rod seal device structure is excessively simple, and seal is easily stuck, causes First air to carry coal dust and enters
Inside sealing device, cause sealing device to damage, pull bar is damaged when serious.The design principle of tie-rod sealing be by sealing air with
What the pressure difference control wind powder of First air leaked, but due to sealing device inside blast very little, low voltage difference can not will go into close
Envelope airduct inside graininess coal cinder blow back upwards again, can only finally allow dust destroy seal it is backward under be discharged to coal-grinding
Machine outside.
Original sealing device structure is excessively simple, and coal pulverizer internal environment is quite severe.For example：Stone, steel wire, rag
It is easy to make sealing shroud stuck Deng debris.Now pull bar produces Relative friction, sealing surface to be destroyed rapidly with sealing shroud, causes close
Envelope blast is largely reduced.A large amount of coal dusts and stone particle cause environmental pollution into spray shape toward outward leakage, and energy waste, expense increases
Plus, output value reduction.
A kind of medium-speed pulverizer pull bar is disclosed in the utility model patent of CN201420456161 in the prior art
Sealing device, its equipment tie-rod sealing is divided into sealing block and lower sealing two parts, and sealing block uses card slot type Split type structure, under it is close
Envelope uses packing_seal.Pull bar occurs slight swing to equipment in the process of running.Due to meeting between sealing block draw-in groove position
There is abrasion, horizontal direction gap constantly increases, the free gap for causing coal dust to enter between draw-in groove by gap, coal dust
The characteristic that tie-rod sealing follows pull bar to swing together is hindered after.Stuck so as to seal, pull bar moves up and down and pull bar is close
Envelope sealing position produces abrasion, and gap constantly increases.Finally result in sealing blast to reduce, coal dust constantly pours in sealing air compartment, hinders
Plug sealing air pipe, damages sealing under pull bar, so as to pull bar leakage coal dust phenomenon occur.Serious pollutes environment, to hydraulic pressure system
The safe and stable operation of system constitutes a threat to.The work difficulty of maintenance and the stability of equipment are also increased, drawing occurs when serious
Bar is broken.
Utility model content
For the deficiency in structure in the prior art, the purpose of this utility model is to provide a kind of medium-speed pulverizer pull bar
Sealing device, sealing is ensured for meeting between pull bar and coal pulverizer inside, pull bar is not in stuck existing, while can reduce
Pull bar wear extent.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of sealing dress of medium-speed pulverizer pull bar
Put, the sealing device is set on pull bar, including：Sealing block and sealing block base；Wherein,
The inside of the sealing block is provided with the upper body opening and lower body opening for running through up and down, and diameter and the pull bar of the upper body opening are fitted
Match somebody with somebody, the lower body opening with diameter greater than the upper body opening, between be connected excessive with chamfering；
The sealing block is the sealing block one that longitudinal direction is cut open and the sealing composition of block two, sealing block one and the sealing block
Two are bolted, it is described sealing block one be provided with for bolted screwed hole, the sealing block two be provided with
The screw thread hole site be adapted for bolted bolt hole；
The sealing block base is arranged on the sealing air compartment of coal pulverizer by stand, is logical in the middle of the sealing block base
Hole, the through-hole diameter is more than pull bar, and the through hole is used for pull bar and enters the sealing block, the sealing block through with sealing air
By gravity safety loaded on the sealing block base.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the sealing block top is that taper type bottom is cylinder.
Further, the sealing block is made up of alloy.
Further, the sealing device of the medium-speed pulverizer pull bar is additionally provided with sealing block and covers, and covers logical on the sealing block
Cross and be bolted on the sealing block.
Further, the sealing device of the medium-speed pulverizer pull bar is additionally provided with lower sealing, it is described under be sealingly mounted at it is described
Seal the place that the bottom pull bar of air compartment is passed through.
Further, the lower sealing includes：Upper and lower two parts, the upper surface on lower sealing top is corrugated, lower sealing
The lower surface on top is smooth, and the upper surface of lower sealed lower portion is smooth, and the lower surface of lower sealing is corrugated, under lower sealing top
Holding together with abutted with the upper surface of lower sealed lower portion.
Further, wear-resisting, resistant to elevated temperatures material is sealed under described.
The beneficial effects of the utility model are：The sealing device can dismantle assembling, easy for installation, be mainly characterized by using
Face is sealed, and very small with pull bar gap, pull bar sealing block when up and down is remained stationary as, pull bar sealing block when swinging
Pull bar can be followed to swing together, due to sealing block bottom for face seals, do not fixed, horizontal direction scope of activities is unrestricted
System, so being not in stuck phenomenon, has the advantages that automatic capturing, can both ensure sealing, it is also possible to reduce pull bar abrasion
Amount.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the sealing device of medium-speed pulverizer pull bar of the utility model；
Fig. 2 is a kind of sealing device sealing block structural representation of medium-speed pulverizer pull bar of the utility model；
Fig. 3 is cross section structure schematic diagram at a kind of sealing device sealing block A of medium-speed pulverizer pull bar of the utility model；
Fig. 4 is cross section structure schematic diagram at a kind of sealing device sealing block B of medium-speed pulverizer pull bar of the utility model；
Fig. 5 is a kind of sealing device sealing block understructure schematic diagram of medium-speed pulverizer pull bar of the utility model；
Fig. 6 illustrates for a kind of sealing device sealing block base vertical section structure of medium-speed pulverizer pull bar of the utility model
Figure；
Fig. 7 is a kind of sealing device sealing block superstructure schematic diagram of medium-speed pulverizer pull bar of the utility model；
Fig. 8 is that lid vertical section structure is illustrated on a kind of sealing device sealing block of medium-speed pulverizer pull bar of the utility model
Figure；
In Fig. 1~8, the list of designations represented by each label is as follows：
1 sealing block
2 sealing block bases
Body opening on 3
4 times body openings
5 sealing blocks one
6 sealing blocks two
7 stands
8 sealing air compartments
Covered on 9 sealing blocks
10 times sealings
Specific embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
Please also refer to shown in Fig. 1~8, it is the structural representation of the sealing device of medium-speed pulverizer pull bar of the present utility model
The structural representation of figure and section components.The sealing device of the medium-speed pulverizer pull bar includes：Sealing block 1 and sealing block
Base 2；Wherein,
The top of the sealing block 1 is that taper type bottom is cylinder, and the inside of the sealing block 1 is provided with run through up and down upper
Body opening 3 and lower body opening 4, the diameter of the upper body opening 3 are adapted to pull bar, the lower body opening 4 with diameter greater than the upper body opening 3,
Between be connected excessive with chamfering；Pull bar passes through the sealing block 1, and the sealing block 1 is contacted with pull bar face, in the sealing block 1
Gap between surface and pull bar outer surface is very small, is conducive to automatic capturing, can reduce the abrasion of pull bar, while also wanting energy
Ensure sealing property；
The sealing block 1 is longitudinal sealing block 1 cut open and the sealing composition of block 26, the sealing block 1 and institute
State sealing block 26 to be bolted, the sealing block 1 is provided with for bolted screwed hole, the sealing block
26 be provided be adapted with the screw thread hole site for bolted bolt hole；
The sealing block base 2 is arranged on the sealing air compartment 8 of coal pulverizer by stand 7, and the sealing block base 2 is resistance to
The quality of rubber materials of high temperature, is secured by bolts on the stand 7, is through hole in the middle of the sealing block base 2, and the through hole is straight
Footpath is more than pull bar, and the through hole is used for pull bar and enters the sealing block 1 through with sealing air, and the sealing block 2 passes through gravity safety
Loaded on the sealing block base 2；
The sealing block 1 is made up of alloy, using alloy material make so that can utilize the sealing block 1 itself
Weight is fixed on the sealing block base 2, and pull bar sealing block 1 in upper shifting is not moved, it is ensured that the blast of closed chamber.
The sealing device of the medium-speed pulverizer pull bar is additionally provided with lid 9 on sealing block, and the centre of lid 9 is to pass through on the sealing block
Perforation, the through hole is passed through for pull bar, described to be adapted with pull bar through bore dia, and lid 9 passes through spiral shell on the sealing block
Bolt is fixed on the sealing block 1；
The sealing device of the medium-speed pulverizer pull bar is additionally provided with lower sealing 10, and the lower sealing 10 is arranged on the sealing
The place that the bottom pull bar of air compartment 8 is passed through, the lower sealing 10 includes：Upper and lower two parts, the upper surface on lower sealing top is
Corrugated, the lower surface on lower sealing top is smooth, and the upper surface of lower sealed lower portion is smooth, the lower surface of lower sealing be it is corrugated,
Together with the lower end on lower sealing top abuts with the upper surface of lower sealed lower portion.The inside of the lower sealing 10 is provided with up/down perforation
The hole of lower sealing, the middle part in the hole is lip., it is necessary to lower sealing top and lower sealed lower portion are stacked when being sealed under installation
To get up be set on pull bar together, waveform can form sealing step by step and reduce blast so that sealing air will not spill.
The material of the lower sealing 10 is wear-resisting, resistant to elevated temperatures material, for example, can be：High-temperature resistant rubber, high-temperature resistant rubber
The described lower sealing 10 of material has certain elasticity, and the lower sealing 10 is brought into close contact with pull bar.Described in corrugated
Lower sealing 10, pull bar is during moving up and down, and lower sealing is not moved guarantee sealing air compartment 8 and do not leaked out, same to seal at present more
It is wear-resisting.
When installing and using, pull bar penetrates the lower sealing, through sealing air compartment 8, through the sealing block base, wears
Cross sealing block, through sealing block on cover, through coal pulverizer housing, a sealing block part exists in coal pulverizer enclosure interior, a part
Coal pulverizer hull outside, in coal-grinding, because the size of coal cinder can cause pull bar to move up and down or horizontal movement inside coal pulverizer, draws
When bar moves up and down, the sealing block on pull bar is not moved up and down under own wt with pull bar；It is close during pull bar horizontal movement
The bottom and sealing block seating plane for sealing block seal, and pull bar and lower sealing keep sealing so that inside the closed chamber of medium-speed pulverizer
Sealing air blast is maintained, and so ensures that coal pulverizer inside First air does not enter with coal dust from the top of sealing block
Between sealing block and pull bar, the abrasion of pull bar is which reduced, increase the service life of pull bar.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (7)
1. a kind of sealing device of medium-speed pulverizer pull bar, it is characterised in that including：Sealing block and sealing block base；Wherein,
The inside of the sealing block is provided with the upper body opening and lower body opening for running through up and down, and the diameter of the upper body opening is adapted to pull bar,
The lower body opening with diameter greater than the upper body opening, between be connected excessive with chamfering；
The sealing block is the sealing block one that longitudinal direction is cut open and the sealing composition of block two, sealing block one and the sealing block two-way
Cross bolt connection, the sealing block one is provided with for bolted screwed hole, the sealing block two be provided with it is described
Screw thread hole site be adapted for bolted bolt hole；
The sealing block base is arranged on the sealing air compartment of coal pulverizer by stand, is through hole in the middle of the sealing block base,
The through-hole diameter is more than pull bar, and the through hole is used for pull bar and enters the sealing block through with sealing air, and the sealing block leads to
Gravity is crossed to be installed on the sealing block base.
2. the sealing device of medium-speed pulverizer pull bar according to claim 1, it is characterised in that the sealing block top is
Taper type bottom is cylinder.
3. the sealing device of medium-speed pulverizer pull bar according to claim 1, it is characterised in that the sealing block is by alloy
It is made.
4. the sealing device of medium-speed pulverizer pull bar according to claim 1, it is characterised in that be additionally provided with sealing block
Lid, lid is bolted on the sealing block on the sealing block.
5. the sealing device of medium-speed pulverizer pull bar according to claim 1, it is characterised in that be additionally provided with lower sealing, institute
State down and be sealingly mounted at the sealing bottom of air compartment, the place that pull bar is passed through.
6. the sealing device of medium-speed pulverizer pull bar according to claim 5, it is characterised in that the lower sealing includes：
Upper and lower two parts, the upper surface on lower sealing top is corrugated, and the lower surface on lower sealing top is smooth, lower sealed lower portion it is upper
End face is smooth, and the lower surface of lower sealing is corrugated, and the lower end on lower sealing top is connected to one with the upper surface of lower sealed lower portion
Rise.
7. the sealing device of the medium-speed pulverizer pull bar according to claim 5 or 6, it is characterised in that be sealed under described
Wear-resisting, resistant to elevated temperatures material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013250.XU CN206175656U (en) | 2016-08-31 | 2016-08-31 | Sealing device for pull rod of medium -speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013250.XU CN206175656U (en) | 2016-08-31 | 2016-08-31 | Sealing device for pull rod of medium -speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175656U true CN206175656U (en) | 2017-05-17 |
Family
ID=58675515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013250.XU Expired - Fee Related CN206175656U (en) | 2016-08-31 | 2016-08-31 | Sealing device for pull rod of medium -speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206175656U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382196A (en) * | 2017-08-13 | 2019-02-26 | 大唐临清热电有限公司 | Power plant coal machine tie-rod sealing attachment device |
| CN113958713A (en) * | 2021-10-29 | 2022-01-21 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
-
2016
- 2016-08-31 CN CN201621013250.XU patent/CN206175656U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382196A (en) * | 2017-08-13 | 2019-02-26 | 大唐临清热电有限公司 | Power plant coal machine tie-rod sealing attachment device |
| CN113958713A (en) * | 2021-10-29 | 2022-01-21 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
| CN113958713B (en) * | 2021-10-29 | 2023-10-10 | 华能秦煤瑞金发电有限责任公司 | Hydraulic pull rod sealing device of medium-speed coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20190831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |