CN207178692U - A kind of high efficiency mill stand sealing structure - Google Patents
A kind of high efficiency mill stand sealing structure Download PDFInfo
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- CN207178692U CN207178692U CN201721238245.3U CN201721238245U CN207178692U CN 207178692 U CN207178692 U CN 207178692U CN 201721238245 U CN201721238245 U CN 201721238245U CN 207178692 U CN207178692 U CN 207178692U
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Abstract
The utility model discloses a kind of high efficiency mill stand sealing structure, include the interior sealing mechanism in grit chamber and the external seal mechanism on reductor below main shaft, the interior sealing mechanism is by seal, rotating seal, linkage forms, the seal is fixed on the upper end circumferential position of slag blocking ring, and the bottom of deslagging chamber is fixed on by support column supporting welding, the outer end of the seal is installed with rotating seal respectively, it is connected on the rotating seal between mill by linkage, the external seal mechanism includes by dynamic seal, sealing sheath, fixing bolt forms, the dynamic seal is sleeved on main shaft, and dynamic seal is encapsulated by sealing sheath.The utility model is reasonable in design, so as to realize the gap being fully sealed between mill and pushing off the slag circle, it is ensured that let out under dust granules, while when the full room of deslagging chamber there will not be particle spilling, there is provided a kind of long-acting, wide shaft sealer of applicability.
Description
Technical field：
Sealing technical field is the utility model is related to, relates generally to a kind of high efficiency mill stand sealing structure.
Background technology：
Vertical mill is a kind of blocks of solid material, the equipment for being processed into flour, is common in thermal power plant coal
Wear into coal dust.Stone is worn into stone flour by cement industry, and metallic ore is processed into miberal powder etc. by metallurgy industry.
His operation principle is as follows：Motor via reducer drives main shaft rotation, and main shaft drives grinding roller to turn with mill rotation
Dynamic, solid material is rolled into powder by the grinding roller of rotation with mill, while granular material is rolled into powder by the mill rotated.Revolve simultaneously
The mill turned is granular material because centrifugal force is dished out from periphery, and ajutage is blown from bottom to top, and granular material is taken away with the wind, it is impossible to
The slag charge of crushing leaks down, and the scraper plate rotated with mill, is discharged by slag-drip opening, there is dust and slag particle in grit chamber, can pass through main shaft
Let out under at seal.
Let out to reduce under ground-slag, install a circle pushing off the slag circle additional in grit chamber, but fluctuated during mill rotation, pushing off the slag circle
Gap is still left in face of being association of activity and inertia between mill, and when the quantity of slag is big, deslagging is not in time.Debris in grit chamber is accumulated and exceedes gear
After the contact surface of slag circle and mill, existing ground-slag enters the gap between pushing off the slag circle and main shaft, and impossible Zai Hui grit chambers, can only
Contacted with sealing ring by axle in sealing ring and let out and under, be i.e. wear spindle, damage seal again, and cause seal failure, leaked out,
Leak powder.
Medium-speed pulverizer main shaft sealing device ZL201310709998.8 is elastic close because having been installed additional between mill and pushing off the slag circle
Envelope, can effectively solve ground-slag and enter sealing ring position.But for thermal power plant coal-grinding powder, because hot blast temperature be up to 320 DEG C with
On, large sized unit uses super-supercritical technique, and hot blast temperature reaches more than 400 DEG C, and sealing ring normal use temperature is about 300
DEG C or so, cause sealing ring aging, harden, crush, while in the big coal dust of processing hardness, it is close also easily with abradable seal circle
After seal abrasion, it can still result in ground-slag dust and enter at sealing, cause to reveal.
Utility model content：
A kind of the defects of the utility model purpose is exactly to make up prior art, there is provided high efficiency mill stand sealing knot
Structure, realize the gap being fully sealed between mill and pushing off the slag circle, it is ensured that let out under dust granules, while when the full room of deslagging chamber also will not
There is particle spilling.
The utility model is achieved through the following technical solutions：
A kind of high efficiency mill stand sealing structure, it is characterised in that：Include the interior sealing mechanism in grit chamber
With the external seal mechanism on reductor below main shaft, the interior sealing mechanism is filled by seal, rotating seal, linkage
Composition is put, the seal is fixed on the upper end circumferential position of slag blocking ring, and is fixed on row by support column supporting welding
The bottom of grit chamber, the outer end of the seal are installed with rotating seal respectively, on the rotating seal between mill
Connected by linkage, the external seal mechanism includes to be made up of dynamic seal, sealing sheath, fixing bolt, described dynamic
Sealing member sheathing is on main shaft, and dynamic seal is encapsulated by sealing sheath.
Described seal is six, and for decile on the circumferential position of slag blocking ring, the support column is six and seal
Correspond, and be distributed on deslagging chamber bottom.
Neck is respectively equipped with the rotating seal, respectively with seal snap fit.
Described linkage includes block one and block two, and the block one is driving link stopper, is welded on mill side
On face, the block two is driven block, and the bottom of block two is fixedly connected with rotating seal.
The middle part of described dynamic seal is provided with annular slot.
It is provided with and is connected with each other to the sealing air pipe in outside between described slag blocking ring bottom and main shaft.
The utility model has the advantages that：
The utility model is reasonable in design, so as to realize the gap being fully sealed between mill and pushing off the slag circle, it is ensured that dust
Let out under particle, while when the full room of deslagging chamber there will not be particle spilling, there is provided a kind of long-acting, wide shaft sealer of applicability.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model.
Embodiment：
Referring to accompanying drawing.
A kind of high efficiency mill stand sealing structure, include in grit chamber 1 interior sealing mechanism and installed in master
External seal mechanism on the lower section reductor of axle 2, the interior sealing mechanism is by seal 3, rotating seal 4,5 groups of linkage
Into the seal 3 is fixed on the upper end circumferential position of slag blocking ring 6, and is fixed on deslagging by the supporting welding of support column 7
The bottom of room, the outer end of the seal 3 are installed with rotating seal 4 respectively, on the rotating seal 4 with mill 11 it
Between connected by linkage 5, the external seal mechanism includes to be made up of dynamic seal 8, sealing sheath 9, fixing bolt 10,
The dynamic seal 3 is sleeved on main shaft 2, and dynamic seal rotates with main shaft, never wornout main shaft, and dynamic seal height is close
Closure covers width 105%, loads sealing sheath after compression, there is the self-service compensating action of lip elasticity.
Described seal is 6, and for decile on the circumferential position of slag blocking ring 6, the support column 7 is 6 and seal
Correspond, and be distributed on deslagging chamber bottom.
Be respectively equipped with neck on the rotating seal 8, respectively with seal snap fit.
Described linkage 5 includes the 5-1 of block one and block two 5-2, the 5-1 of block one for driving link stopper, weldering
It is connected on mill side, the 5-2 of block two is driven block, and the bottom of block two is fixedly connected with rotating seal.Gear
Block one rotates with mill, and can be fluctuated with mill, but is not exposed to rotating seal, reduces between mill and seal
Motion artifacts.
The middle part of described dynamic seal 8 is provided with annular slot.
It is provided with and is connected with each other to the sealing air pipe 12 in outside between described slag blocking ring bottom and main shaft.
Its operation principle is as follows：Seal 3 is divided into 6 deciles, bolt-connection between decile, is fixed on slag blocking ring 6, bottom
Slide downward is prevented with six support columns 7, supporting is weldingly fixed on deslagging chamber bottom, rotating seal 4, is equally divided into six etc.
Point, groove is caught in seal 3, is bolted between decile, is formed an overall annulus, is supported by seal 3.Linkage
5 one end are welded on mill 11, and one section is fixed on rotating seal 4, and the assembly axis are to moving up and down, but radially with mill 11
Synchronous rotary, band dynamic seal 3 rotate, seal 3, rotating seal 4 have abrasion but it is also seamless, because of the energy of rotating seal 4
Compensation is freely fallen, so as to realize the gap being fully sealed between mill 11 and pushing off the slag circle 6, it is ensured that let out under dust granules, work as simultaneously
The full room of deslagging chamber there will not be particle spilling.
Claims (6)
- A kind of 1. high efficiency mill stand sealing structure, it is characterised in that：Include interior sealing mechanism in the grit chamber and External seal mechanism on reductor below main shaft, the interior sealing mechanism is by seal, rotating seal, linkage Composition, the seal is fixed on the upper end circumferential position of slag blocking ring, and is fixed on deslagging by support column supporting welding The bottom of room, the outer end of the seal are installed with rotating seal, led on the rotating seal between mill respectively Linkage connection is crossed, the external seal mechanism includes to be made up of dynamic seal, sealing sheath, fixing bolt, described dynamic close Sealing is sleeved on main shaft, and dynamic seal is encapsulated by sealing sheath.
- 2. high efficiency mill stand sealing structure according to claim 1, it is characterised in that：Described seal is six Individual, on the circumferential position of slag blocking ring, the support column is six and corresponded with seal decile, and is distributed on deslagging chamber bottom Portion.
- 3. high efficiency mill stand sealing structure according to claim 1, it is characterised in that：Divide on the rotating seal Not She You neck, respectively with seal snap fit.
- 4. high efficiency mill stand sealing structure according to claim 1, it is characterised in that：Described linkage includes There are block one and block two, the block one is driving link stopper, is welded on mill side, and the block two is driven block, The bottom of block two is fixedly connected with rotating seal.
- 5. high efficiency mill stand sealing structure according to claim 1, it is characterised in that：In described dynamic seal Portion is provided with annular slot.
- 6. high efficiency mill stand sealing structure according to claim 1, it is characterised in that：Described slag blocking ring bottom with It is provided with and is connected with each other to the sealing air pipe in outside between main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238245.3U CN207178692U (en) | 2017-09-26 | 2017-09-26 | A kind of high efficiency mill stand sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238245.3U CN207178692U (en) | 2017-09-26 | 2017-09-26 | A kind of high efficiency mill stand sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178692U true CN207178692U (en) | 2018-04-03 |
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ID=61748240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721238245.3U Active CN207178692U (en) | 2017-09-26 | 2017-09-26 | A kind of high efficiency mill stand sealing structure |
Country Status (1)
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| CN (1) | CN207178692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420547A (en) * | 2017-09-26 | 2017-12-01 | 马鞍山市荣亿密封材料有限责任公司 | A kind of high efficiency mill stand sealing structure |
-
2017
- 2017-09-26 CN CN201721238245.3U patent/CN207178692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420547A (en) * | 2017-09-26 | 2017-12-01 | 马鞍山市荣亿密封材料有限责任公司 | A kind of high efficiency mill stand sealing structure |
| CN107420547B (en) * | 2017-09-26 | 2023-11-07 | 马鞍山市荣亿密封材料有限责任公司 | High efficiency mill frame seal structure |
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