CN202790549U - Abrasion-resistant sealing washer of hot air box of steel ball coal mill - Google Patents
Abrasion-resistant sealing washer of hot air box of steel ball coal mill Download PDFInfo
- Publication number
- CN202790549U CN202790549U CN 201220352162 CN201220352162U CN202790549U CN 202790549 U CN202790549 U CN 202790549U CN 201220352162 CN201220352162 CN 201220352162 CN 201220352162 U CN201220352162 U CN 201220352162U CN 202790549 U CN202790549 U CN 202790549U
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- steel ball
- ring
- layer
- coal mill
- strengthening
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Abstract
An abrasion-resistant sealing washer of a hot air box of a steel ball coal mill comprises three layer structures. Outer diameters of the three layer structures are equal, the three layer structures closely cling with one another, a middle layer is a strengthening ring, a fixing ring and a working face abrasion-resistant layer are respectively arranged on two sides of the strengthening ring, and the diameter of an inner hole of the fixing ring is larger than that of an inner hole of the strengthening ring. When the structures are used, the fixing ring is arranged on a spiral conveyor, at the moment, an air chamber can be formed between the strengthening ring and the spiral conveyor as the diameter of the inner hole of the fixing ring is larger than that of the inner hole of the strengthening ring, the integral washer is easy to deform under the action of sealing air, and an excellent dynamic seal effect can be realized between the washer and a hollow shaft. In addition, high-water-based high-temperature-resistant fibers are woven to form the working face abrasion-resistant layer, and accordingly the service life of the sealing washer is greatly prolonged.
Description
Technical field
The utility model relates to a kind of ring structure, specifically a kind of wear-resisting type Steel Ball Coal Mill hot blast box seal washer.
Background technique
At present, the seal washer that heat-engine plant steel ball coal-grinding coal-grinding machine hot blast box adopts generally adopts conventional sealing configuration, and the sealing circle in use can't form good motive sealing to quill shaft, and sealing effect is poor, and in use wearing and tearing are very fast, and working life is very short.
The model utility content
The purpose of this utility model is to be the deficiency that solves the problems of the technologies described above, and improves a kind of wear-resisting type Steel Ball Coal Mill hot blast box seal washer, and quill shaft is formed good motive sealing, good sealing effect, and also greatly improve working life.
The utility model is the deficiency that solves the problems of the technologies described above, the technological scheme that adopts is: wear-resisting type Steel Ball Coal Mill hot blast box seal washer, the sealing packing ring is comprised of three-decker, the external diameter of three-decker equates and fits tightly together, the mesosphere is for strengthening circle, both sides are respectively retainer ring and working surface wearing layer, and the internal orifice dimension of retainer ring is greater than the internal orifice dimension of strengthening circle.
The jointing of described seal washer is two-layer step shape, every layer of step all be 45 ° of oblique angles.
The internal orifice dimension of described reinforcement circle is identical with working surface wearing layer internal orifice dimension.
The beneficial effects of the utility model are: this structure in use: retainer ring is contained on the helical feed body, at this moment, because the internal orifice dimension of retainer ring is greater than the internal orifice dimension of strengthening circle, therefore, strengthen between circle and the helical feed body and can form an air chamber, under the sealing air effect, be easy to make whole packing ring to deform, form good motive sealing with quill shaft, next working surface wearing layer employing height is water base, high-temperature resistant fiber is woven into, and greatly improves the life-span of sealing packing ring.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model embodiment.
Fig. 3 is the schematic representation of interface of the present utility model.
Fig. 4 is along the structure sectional view of P-P line among Fig. 3.
Fig. 5 is along the structure sectional view of h-h line among Fig. 3.
Mark among the figure: 1, working surface wearing layer, 2, strengthen circle, 3, retainer ring, 4, air chamber, 5, the helical feed body.
Embodiment
As shown in the figure, wear-resisting type Steel Ball Coal Mill hot blast box seal washer, the sealing packing ring is comprised of three-decker, the external diameter of three-decker equates and fits tightly together, the mesosphere is for strengthening circle 2, one side of strengthening circle 2 is provided with retainer ring 3, the another side of strengthening circle 2 is provided with working surface wearing layer 1, the internal orifice dimension of strengthening circle 2 is identical with working surface wearing layer 1 internal orifice dimension, the internal orifice dimension of retainer ring 3 is greater than strengthening circle 2 internal orifice dimensions, therefore a side of sealing packing ring presents boss structure, and seal washer is fixed on the coal pulverizer hot blast box, fixedly encloses fixation, strengthen circle the working surface wearing layer is played the supporting adhewsive action, the working surface wearing layer contacts with the quill shaft end, when coal pulverizer is worked, forms motive sealing face.In use: retainer ring is contained on the helical feed body, at this moment, because the internal orifice dimension of retainer ring is greater than the internal orifice dimension of strengthening circle, therefore, can form an air chamber 4 between one end face of reinforcement circle 2 and the end face of helical feed body 5, under the sealing air effect, be easy to make whole packing ring to deform, form good motive sealing with quill shaft.
Described reinforcement circle, retainer ring and working surface wearing layer all can be adopted as the high-temperature flexible fabric.For improving the working surface life-span that contacts with the quill shaft end, develop the working surface wearing layer that height is water base, high-temperature resistant fiber is woven into, the life-span of greatly improving the sealing packing ring.
The quadruple board platform rank shape at the Interface design oblique angle at 45 ° of sealing packing ring, even in installation, increased again bonding strength, simultaneously, 45 ° of oblique angle modes of interface, be along each section of circumference on interface and the quill shaft port when rotated and contact, can effectively prevent the scratch at docking port position, quill shaft end, improve the working life of seal washer.
Claims (3)
1. wear-resisting type Steel Ball Coal Mill hot blast box seal washer, it is characterized in that: the sealing packing ring is comprised of three-decker, the external diameter of three-decker equates and fits tightly together, the mesosphere is for strengthening circle (2), both sides are respectively retainer ring (3) and working surface wearing layer (1), and the internal orifice dimension of retainer ring (3) is greater than the internal orifice dimension of strengthening circle (2).
2. wear-resisting type Steel Ball Coal Mill hot blast box seal washer according to claim 1, it is characterized in that: the jointing of described seal washer is two-layer step shape, every layer of step all be 45 ° of oblique angles.
3. wear-resisting type Steel Ball Coal Mill hot blast box seal washer according to claim 1, it is characterized in that: the internal orifice dimension of described reinforcement circle (2) is identical with working surface wearing layer (1) internal orifice dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352162 CN202790549U (en) | 2012-07-20 | 2012-07-20 | Abrasion-resistant sealing washer of hot air box of steel ball coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352162 CN202790549U (en) | 2012-07-20 | 2012-07-20 | Abrasion-resistant sealing washer of hot air box of steel ball coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790549U true CN202790549U (en) | 2013-03-13 |
Family
ID=47817814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220352162 Expired - Fee Related CN202790549U (en) | 2012-07-20 | 2012-07-20 | Abrasion-resistant sealing washer of hot air box of steel ball coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150547A (en) * | 2017-12-22 | 2018-06-12 | 杭州纳财机械设备有限公司 | A kind of bearing dustproof gasket on milling machine |
-
2012
- 2012-07-20 CN CN 201220352162 patent/CN202790549U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150547A (en) * | 2017-12-22 | 2018-06-12 | 杭州纳财机械设备有限公司 | A kind of bearing dustproof gasket on milling machine |
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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: 20130313 Termination date: 20170720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |