CN106812949A - A kind of corrugated pull rod seal device of coal pulverizer - Google Patents
A kind of corrugated pull rod seal device of coal pulverizer Download PDFInfo
- Publication number
- CN106812949A CN106812949A CN201710078190.2A CN201710078190A CN106812949A CN 106812949 A CN106812949 A CN 106812949A CN 201710078190 A CN201710078190 A CN 201710078190A CN 106812949 A CN106812949 A CN 106812949A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- upper connecting
- seal
- corrugated
- coal pulverizer
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
- F16J15/52—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention relates to a kind of corrugated pull rod seal device of coal pulverizer, it is arranged between upper connecting rod and grinding chamber, grinding chamber has the bearing of the through hole and support upper connecting rod for wearing upper connecting rod, it is characterized in that, the corrugated pull rod seal device of coal pulverizer is the flexible corrugation seal pipe of truncated cone-shaped, the top of flexible corrugation seal pipe is fixed on upper connecting rod outer wall by clip, and the bottom of flexible corrugation seal pipe is fixed on bearing by pressing plate.The beneficial effects of the invention are as follows：Realize pull bar (dynamic) to be combined with the gapless of base (static state), and upper connecting rod is synchronized with the movement with sealing device, friction is not produced, thoroughly solve the problems, such as that sealing device weares and teares with upper connecting rod；The material of novel seal body, extends the service life of seal；Install simple, and realize past heritage utilization；Cancel tie-rod sealing wind and upper connecting rod lower sealing device, effectively reduce the power consumption and spare parts cost of seal fan.
Description
Technical field
The present invention relates to coal mill draw bar sealing device, more particularly to a kind of corrugated pull rod seal device of coal pulverizer.
Background technology
As shown in figure 1, the upper connecting rod upper sealing device of medium-speed pulverizer is rigid seal at present, the lower sealing of upper connecting rod is filled
Be set to stuffing box structure, the upper sealing device of upper connecting rod be completely cut off outside the wind coal of coal pulverizer inside by sealing air drain to closed chamber and
Device external, the lower sealing device of upper connecting rod plays a part of isolation sealing air leakage, and the up/down sealing device of upper connecting rod is uniform
Put on upper connecting rod, filler is common packing.There is rigid collision in this sealing device, upper connecting rod and sealing are filled when in use
Abrasion is put than larger, and the uncompensated ability of sealing device after abrasion, seal clearance abrasion are once exceed certain size, this sealing
Device will lose sealability, meanwhile, lower sealing device is packing seal, by the pretightning force of artificial adjustment condiment gland
Compensation sealing gap, radially rocks due to being limited by space with upper connecting rod, and filler is easy to lose sealing effectiveness, in practice it has proved that,
This sealing structure is not suitable for moving back and forth and radial direction shaking volume is than larger occasion.
Not enough for more than, someone makes improvement, and upper connecting rod lower sealing device filler is changed into shaping fluorubber (￠
101mm), and in upper connecting rod upper sealing device shaping fluorubber filler (￠ 101mm) is increased, was run by this several years, base
Originally solve coal pulverizer upper connecting rod and frequently leak powder phenomenon.However, after shaping fluorubber service life is about 5000 hours, upper connecting rod
Lower sealing steel construction and fluorubber do not wear and tear substantially, but upper connecting rod upper sealing device fluorubber and steel member serious wear, just
Must be changed, 10 coal pulverizers will be changed once to upper sealing device every year on average, be sealed under upper connecting rod after transformation
Still there is air leakage phenomena at device.Simultaneously, although upper connecting rod life, but mild wear also occurs.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of thoroughly solving and leaked out at upper connecting rod, leak powder, upper connecting rod
And the corrugated pull rod seal device of coal pulverizer of sealing device wear problem.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of corrugated pull rod seal device of coal pulverizer, if
Put between upper connecting rod and grinding chamber, the grinding chamber is with the through hole for wearing the upper connecting rod and supports the upper connecting rod
Bearing, it is characterised in that the corrugated pull rod seal device of coal pulverizer is the flexible corrugation seal pipe of truncated cone-shaped, the flexibility
The top of bellow seal pipe is fixed on upper connecting rod outer wall by clip, and the bottom of the flexible corrugation seal pipe is solid by pressing plate
It is scheduled on the bearing.
Further：The material of the flexible corrugation seal pipe is Polymer Synthesizing rubber.
Further：The clip is circumferentially fixed on the outer wall of the upper connecting rod, between the clip and the upper connecting rod
Thickness at the top of equal to the flexible corrugation seal pipe, the distance of the clip to the bearing is close equal to the flexible corrugation
The height of tube sealing.
Further：Described pressing plate is circumferentially fixed on the bearing, and the spacing of the pressing plate to the bearing is equal to institute
The thickness that flexible corrugation seals bottom of the tube is stated, the diameter of the pressing plate is equal to the base diameter of the flexible corrugation seal pipe.
Based on above-mentioned technical proposal, the beneficial effects of the invention are as follows：
1st, the corrugated pull rod seal device of coal pulverizer of the invention changes the seal form at pull bar sound position, by pull bar
Upper sealing device is changed to corrugated sealing device, and material is Polymer Synthesizing rubber, and cancels original filler for being used for loading material
Seat, the top of corrugated seal pipe is connected by clip with upper connecting rod, and the bottom of corrugated seal pipe is fixed by pressing plate
On bearing, realize pull bar (dynamic) and combined with the gapless of base (static state), and make upper connecting rod fortune synchronous with sealing device
It is dynamic, friction is not produced, thoroughly solve the problems, such as that sealing device weares and teares with upper connecting rod.
2nd, the material of novel seal body, extends the service life of seal.Corrugated sealing device is using using new
Polymer Synthesizing rubber, its feature is high temperature resistant, endurance, pliability number, and novel structure type fully takes into account equipment
Operating condition and environmental quality, the flexible size of sealing shroud can ensure the service requirement of pull bar.
3rd, install simple, and realize past heritage utilization.Installing New type gland cover need not be modified to equipment, and it is upper
Fixed form on pull bar and base plate is wrapped on upper connecting rod using top snap ring, and bottom is fixed with base portion and uses pressing plate
Bolt is fixed, pressing plate can past heritage utilize, used using the pressing plate reverse side of old sealing ring, using old bolt hole, position is constant, peace
Precommpression is carried out to sealing shroud during dress, to ensure the stroke not less than 150MM.
4th, cancel tie-rod sealing wind and upper connecting rod lower sealing device, thoroughly solve what is leaked out at upper connecting rod lower sealing device
Phenomenon, effectively reduces the power consumption and spare parts cost of seal fan.
Brief description of the drawings
Fig. 1 is a kind of use state schematic diagram of existing coal mill draw bar sealing device.
Fig. 2 is the schematic diagram of the use state of coal mill draw bar sealing device of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1- upper connecting rods；2- grinding chambers；3- through holes；4- bearings；5- flexible corrugation seal pipes；6- clips；7- pressing plates；8- is spacing
Block；9- seals air compartment；10- upper sealing devices；11- lower sealing devices；Pull bar under 12-.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in figure 1, the use state schematic diagram of existing coal mill draw bar sealing device.Coal grinding machine tie-rod mechanism is by upper
The part compositions such as pull bar 1, sealing air compartment 9, upper sealing device 10, lower sealing device 11, lower pull bar 12, when coal pulverizer runs, protect
The blast of the blast more than coal pulverizer grinding chamber 2 of card sealing air compartment 9, pull bar is integrally subject to loading force, grinding roller active force and coal
The factors such as thickness degree influence, and pull bar has axial motion ± 40mm, radially rock the kinetic characteristic of ± 10mm, upper connecting rod 1 it is upper
Sealing device 10 is to completely cut off outside the wind coal of coal pulverizer inside to drain to sealing air room 9 and device external by sealing air, under upper connecting rod 1
Sealing device 11 plays a part of isolation sealing air leakage.
Three tunnels of coal pulverizer sealing air point are supplied to support to seal, grinding roller is sealed and tie-rod sealing, three pull bars of coal pulverizer
Sealing air is provided to air loop duct by a main pipe, respectively enters three upper connecting rod closed chambers, is sealed under indivedual upper connecting rods
When failure of apparatus leaks out, it is possible to sealing blast and deficiency in draught occur, it is impossible to blow away into seal clearance on upper connecting rod
Coal dust and debris, as upper upper connecting rod axial motion and radial direction are rocked, exacerbate the abrasion of upper connecting rod 1 and sealing device, work as coal
When powder and debris enter sealing air compartment 9, it is easy to enter in stuffing box, make packing hardening, lose compensation ability, sealing is caused to be lost
Effect.
As shown in Fig. 2 a kind of corrugated pull rod seal device of coal pulverizer, is arranged between upper connecting rod 1 and grinding chamber 2, grind
Mill room 2 has the bearing 4 of the through hole 3 and support upper connecting rod 1 for wearing upper connecting rod 1, it is characterised in that the corrugated pull bar of coal pulverizer
Sealing device is the flexible corrugation seal pipe 5 of truncated cone-shaped, and the top of flexible corrugation seal pipe 5 is fixed on upper connecting rod 1 by clip 6
On outer wall, the bottom of flexible corrugation seal pipe 5 is fixed on the carrier 4 by pressing plate 7.
Further：The material of flexible corrugation seal pipe 5 is Polymer Synthesizing rubber.Corrugated sealing device employs new
Polymer Synthesizing rubber, its feature is good high temperature resistant, endurance, pliability, while its novel structure type, takes into full account
To the operating condition and environmental quality of equipment, the flexible size of sealing shroud can ensure the service requirement of pull bar.
Further：Clip 6 is circumferentially fixed on the outer wall of upper connecting rod 1, and clip 6 is equal to soft with the spacing of the upper connecting rod 1
Property the top of bellow seal pipe 5 thickness, the distance of the clip 6 to the bearing 4 is equal to the height of the flexible corrugation seal pipe 5
Degree.Because flexible corrugation seal pipe 5 is flexible material, therefore the top of flexible corrugation seal pipe 5 can just be fixed on clip 6
Place.
Further：Pressing plate 7 is circumferentially fixed on the carrier 4, and the spacing of pressing plate 6 to bearing 4 is equal to the bottom of flexible corrugation seal pipe 5
The thickness in portion, the diameter of pressing plate 6 is equal to the base diameter of the flexible corrugation seal pipe 5.Because flexible corrugation seal pipe 5 is soft
Property material, therefore the bottom of flexible corrugation seal pipe 5 can be just fixed at pressing plate 7.
Corrugated tie-rod sealing realizes the dynamic (moving up and down) and plant bottom case static state (maintaining static) of pull bar
Seamless connection, by ripple stroke offset pull bar displacement because realizing seamless connection, sealing air also just loses close
Envelope meaning, so, sealing air is eliminated after transformation.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (4)
1. a kind of corrugated pull rod seal device of coal pulverizer, is arranged between upper connecting rod (1) and grinding chamber (2), the grinding chamber
(2) with the through hole (3) for wearing the upper connecting rod (1) and the bearing (4) of the support upper connecting rod (1), it is characterised in that institute
The flexible corrugation seal pipe (5) that the corrugated pull rod seal device of coal pulverizer is truncated cone-shaped is stated, the flexible corrugation seal pipe (5)
Top is fixed on upper connecting rod (1) outer wall by clip (6), and the bottom of the flexible corrugation seal pipe (5) is solid by pressing plate (7)
It is scheduled on the bearing (4).
2. a kind of corrugated pull rod seal device of coal pulverizer as claimed in claim 1, it is characterised in that the flexible corrugation is close
The material of tube sealing (5) is Polymer Synthesizing rubber.
3. a kind of corrugated pull rod seal device of coal pulverizer as claimed in claim 1 or 2, it is characterised in that the clip (6)
It is circumferentially fixed on the outer wall of the upper connecting rod (1), the spacing of the clip (6) and the upper connecting rod (1) is equal to the flexibility
Thickness at the top of bellow seal pipe (5), the distance of the clip (6) to the bearing (4) is equal to the flexible corrugation seal pipe
(5) height.
4. a kind of corrugated pull rod seal device of coal pulverizer according to claim 1 and 2, it is characterised in that the pressing plate
(7) circumferentially fixed on the roof of the bearing (4), the spacing of the pressing plate (6) to the bearing (4) is equal to the flexible ripple
The thickness of line seal pipe (5) bottom, the diameter of the pressing plate (6) is equal to the base diameter of the flexible corrugation seal pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078190.2A CN106812949A (en) | 2017-02-14 | 2017-02-14 | A kind of corrugated pull rod seal device of coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078190.2A CN106812949A (en) | 2017-02-14 | 2017-02-14 | A kind of corrugated pull rod seal device of coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106812949A true CN106812949A (en) | 2017-06-09 |
Family
ID=59112502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710078190.2A Pending CN106812949A (en) | 2017-02-14 | 2017-02-14 | A kind of corrugated pull rod seal device of coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106812949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999208A (en) * | 2018-01-08 | 2018-05-08 | 安徽齐盈电力设备科技有限公司 | A kind of coal mill draw bar sealing device |
| CN108716547A (en) * | 2018-07-19 | 2018-10-30 | 南京西普水泥工程集团有限公司 | Air compartment flexible seal device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006097810A (en) * | 2004-09-30 | 2006-04-13 | Toyoda Gosei Co Ltd | Universal joint boot |
| US20090028632A1 (en) * | 2007-07-27 | 2009-01-29 | Zf Friedrichshafen | Joint and/or Bearing Arrangement |
| CN202659898U (en) * | 2012-07-11 | 2013-01-09 | 丁洪录 | Pull rod sealing device of vertical medium speed coal mill |
| CN203556444U (en) * | 2013-10-12 | 2014-04-23 | 马鞍山市荣亿密封材料有限责任公司 | Rotation dustproof device for milling roller of medium speed mill |
| CN204025693U (en) * | 2014-08-13 | 2014-12-17 | 龙口华龙电力设备厂 | A kind of seal arrangement of medium-speed pulverizer pull bar |
| CN104776224A (en) * | 2015-02-02 | 2015-07-15 | 浙江大学 | Medium-speed coal mill air ring dynamic and static clearance sealing device |
-
2017
- 2017-02-14 CN CN201710078190.2A patent/CN106812949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006097810A (en) * | 2004-09-30 | 2006-04-13 | Toyoda Gosei Co Ltd | Universal joint boot |
| US20090028632A1 (en) * | 2007-07-27 | 2009-01-29 | Zf Friedrichshafen | Joint and/or Bearing Arrangement |
| CN202659898U (en) * | 2012-07-11 | 2013-01-09 | 丁洪录 | Pull rod sealing device of vertical medium speed coal mill |
| CN203556444U (en) * | 2013-10-12 | 2014-04-23 | 马鞍山市荣亿密封材料有限责任公司 | Rotation dustproof device for milling roller of medium speed mill |
| CN204025693U (en) * | 2014-08-13 | 2014-12-17 | 龙口华龙电力设备厂 | A kind of seal arrangement of medium-speed pulverizer pull bar |
| CN104776224A (en) * | 2015-02-02 | 2015-07-15 | 浙江大学 | Medium-speed coal mill air ring dynamic and static clearance sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999208A (en) * | 2018-01-08 | 2018-05-08 | 安徽齐盈电力设备科技有限公司 | A kind of coal mill draw bar sealing device |
| CN108716547A (en) * | 2018-07-19 | 2018-10-30 | 南京西普水泥工程集团有限公司 | Air compartment flexible seal device |
| CN108716547B (en) * | 2018-07-19 | 2023-12-08 | 南京西普国际工程有限公司 | Flexible sealing device for air chamber |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |