CN209557773U - A kind of ash-valve shaft sealing mechanism - Google Patents
A kind of ash-valve shaft sealing mechanism Download PDFInfo
- Publication number
- CN209557773U CN209557773U CN201822251199.1U CN201822251199U CN209557773U CN 209557773 U CN209557773 U CN 209557773U CN 201822251199 U CN201822251199 U CN 201822251199U CN 209557773 U CN209557773 U CN 209557773U
- Authority
- CN
- China
- Prior art keywords
- ash
- annular
- main shaft
- pressing plate
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 abstract description 3
- 239000010439 graphite Substances 0.000 abstract description 3
- 239000003566 sealing material Substances 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of ash-valve shaft sealing mechanisms, it include ash discharge valve chest, ash discharge valve chest is equipped with mounting hole, main shaft is set in mounting hole, inside and outside sealing clamp is housed positioned at the outer sheath of ash-valve shell on main shaft, the outer surface centre of interior sealing clamp is equipped with the step groove of annular, the inner surface centre of the external seal pressing plate is equipped with ring-shaped step, the ring-shaped step of external seal pressing plate protrudes into the step notch of interior sealing clamp and with the annular outer wall of main shaft with annular chamber is encircled into, and is set with carbon seal ring in the annular chamber.The utility model can be such that gap reduces when occurring gap between main shaft and carbon seal ring in use for some time by tightening to adjust bolt and inwardly compresses graphite, improve the utilization rate of sealing material, it is not necessary to be dismantled and be replaced because sealing pad wear again.The problem that can avoid occurring leakage ash under barotropic condition simultaneously.
Description
Technical field:
The utility model relates to ash-valve technical fields, relate generally to a kind of ash-valve shaft sealing mechanism.
Background technique:
Ash-valve sealing in the prior art is that graphite grazing and sealing clamp form, and the case where positive pressure occurs in equipment
Under sometimes from sealing place occur to leakage ash situation, can directly be observed visually.And be used for a long time diaphragm seal and axis it
Between gap can because abrasion increase, further influence sealing effect.
Utility model content:
The utility model aim is exactly in order to make up the defect of prior art, to provide a kind of ash-valve shaft sealing mechanism, it
Have the advantages that keep sealing effect for a long time.
The utility model is achieved through the following technical solutions:
A kind of ash-valve shaft sealing mechanism, includes ash discharge valve chest, and ash discharge valve chest is equipped with mounting hole, in mounting hole
It is set with main shaft, it is characterised in that: inside and outside sealing clamp is housed positioned at the outer sheath of ash-valve shell on the main shaft, it is interior close
The outer surface centre for sealing pressing plate is equipped with the step groove of annular, and the inner surface centre of the external seal pressing plate is equipped with annular
Step, the ring-shaped step of external seal pressing plate protrude into the step notch of interior sealing clamp and match with the annular outer wall of main shaft and be encircled into
Annular chamber is set with carbon seal ring in the annular chamber.
A kind of ash-valve shaft sealing mechanism, it is characterised in that: the inside and outside sealing clamp and ash discharge valve chest it
Between be bolted and be integrated by adjusting.
A kind of ash-valve shaft sealing mechanism, it is characterised in that: the ring-shaped step end face of the external seal pressing plate
Section is inclined inclined surface inwardly.
A kind of ash-valve shaft sealing mechanism, it is characterised in that: the annular of the ring-shaped step of the external seal pressing plate
It is clearance fit between the annular inner wall of the step groove of outer wall and interior sealing clamp.
The utility model adjusts the positional relationship between inside and outside sealing clamp by adjusting bolt, so that in annular chamber
Carbon seal ring can be constantly in impaction state, avoid generating gap between carbon seal ring and main shaft, effectively avoid outward
The phenomenon of leakage ash occurs.
The utility model has the advantages that:
The utility model avoids the problem of waste on the outside of carbon seal ring first.Main shaft and stone in use for some time
Gap can be made to reduce by tightening to adjust bolt and inwardly compress graphite when occurring gap between black sealing ring, improve sealing
The utilization rate of material, it is not necessary to again because sealing pad wear is dismantled and replaced.It can avoid occurring leakage ash under barotropic condition simultaneously
The problem of.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment:
Referring to attached drawing.
A kind of ash-valve shaft sealing mechanism, includes ash discharge valve chest 1, and ash discharge valve chest 1 is equipped with mounting hole, mounting hole
In be set with main shaft 2, the outer sheath that ash-valve shell 1 is located on main shaft 2 is equipped with inside and outside sealing clamp 3,4, interior sealing clamp 3
Outer surface centre be equipped with the step groove of annular, the inner surface centre of the external seal pressing plate 4 is equipped with ring-shaped step
5, the ring-shaped step 5 of external seal pressing plate 4, which protrudes into the step notch of interior sealing clamp 3 and matches with the annular outer wall of main shaft 2, to surround
Chamber is circularized, carbon seal ring 6 is set in the annular chamber.
It is connected as one between inside and outside sealing clamp 3,4 and ash discharge valve chest 1 by adjusting bolt 7.
The section of the ring-shaped step end face of external seal pressing plate 4 is inclined inclined surface inwardly.
Between being between the annular inner wall of the step groove of the annular outer wall of the ring-shaped step of external seal pressing plate 4 and interior sealing clamp
Gap cooperation.
Claims (4)
1. a kind of ash-valve shaft sealing mechanism, includes ash discharge valve chest, ash discharge valve chest is equipped with mounting hole, covers in mounting hole
Equipped with main shaft, it is characterised in that: inside and outside sealing clamp, interior sealing are housed positioned at the outer sheath of ash-valve shell on the main shaft
The outer surface centre of pressing plate is equipped with the step groove of annular, and the inner surface centre of the external seal pressing plate is equipped with annular table
Rank, the ring-shaped step of external seal pressing plate, which protrudes into the step notch of interior sealing clamp and matches with the annular outer wall of main shaft, is encircled into ring
Shape chamber is set with carbon seal ring in the annular chamber.
2. a kind of ash-valve shaft sealing mechanism according to claim 1, it is characterised in that: the inside and outside sealing clamp with
It is integrated between ash discharge valve chest by adjusting to be bolted.
3. a kind of ash-valve shaft sealing mechanism according to claim 1, it is characterised in that: the annular of the external seal pressing plate
The section of step end face is inclined inclined surface inwardly.
4. a kind of ash-valve shaft sealing mechanism according to claim 1, it is characterised in that: the annular of the external seal pressing plate
It is clearance fit between the annular inner wall of the step groove of the annular outer wall of step and interior sealing clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822251199.1U CN209557773U (en) | 2018-12-29 | 2018-12-29 | A kind of ash-valve shaft sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822251199.1U CN209557773U (en) | 2018-12-29 | 2018-12-29 | A kind of ash-valve shaft sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557773U true CN209557773U (en) | 2019-10-29 |
Family
ID=68305253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822251199.1U Expired - Fee Related CN209557773U (en) | 2018-12-29 | 2018-12-29 | A kind of ash-valve shaft sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209557773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264165A (en) * | 2022-07-07 | 2022-11-01 | 国能陈家港发电有限公司 | External packing chamber of valve and valve |
-
2018
- 2018-12-29 CN CN201822251199.1U patent/CN209557773U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264165A (en) * | 2022-07-07 | 2022-11-01 | 国能陈家港发电有限公司 | External packing chamber of valve and valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20201229 |