CN204312388U - A kind of Coal Chemical Industry pump one-way seal ring - Google Patents
A kind of Coal Chemical Industry pump one-way seal ring Download PDFInfo
- Publication number
- CN204312388U CN204312388U CN201420779661.4U CN201420779661U CN204312388U CN 204312388 U CN204312388 U CN 204312388U CN 201420779661 U CN201420779661 U CN 201420779661U CN 204312388 U CN204312388 U CN 204312388U
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- ring
- way seal
- seal ring
- shape
- changeable
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Abstract
The utility model relates to a kind of Coal Chemical Industry pump one-way seal ring, belongs to coal chemical technology.One-way seal ring of the present utility model, comprise elastic material and process the positioning ring that Shape-changeable ring and hard material process, the Shape-changeable ring of free state is identical with locating ring structure, be the cone structure of restraining forward, the outer, rear end of cone structure extends outward annular connected unit, and Shape-changeable ring and positioning ring are adhesively fixed by respective annular connected unit and form taper component; The annular connected unit of one-way seal ring is fixed on the outer wall of circulating line to be sealed, the endoporus of one-way seal ring front end Shape-changeable ring is interference fitted in the inwall of circulating line to be sealed, and the endoporus of one-way seal ring rear end positioning ring coordinates with the sidewall spacers of the short cover of mechanical seal.One-way sealing ring structure of the present utility model is simple, easy for installation, and sealing, cooling-down effect reliably, make pump chamber and mechanical seal cavity form half-duplex channel, have important application value.
Description
Technical field
The utility model relates to a kind of Coal Chemical Industry pump one-way seal ring, belongs to coal chemical technology.
Background technique
In coal chemical technology, some harsh station chemical flow-process pump inlet pressure is high, and fed sheet of a media temperature is high, and medium solid content is high, and the hardness ratio of solid particle is larger.Under such operating conditions, the Security of pump is had higher requirement, the sealing configuration of pump is not only needed to possess good sealing effect, higher requirement be it is also proposed to wear resistance.Place to be sealed between the pump chamber of Coal Chemical Industry pump and rear-end transmission parts is circulating line, conventional construction arranges labyrinth seal in mechanical seal front end, while mechanical seal ensures sealing, introduce sparge water and mechanical seal is lowered the temperature, and sparge water is discharged to pump chamber by labyrinth seal; Therefore sealing structure is ensure sealing and cooling simultaneously, must leave certain seal clearance in described circulating line.
But there will be following situation during pump operation: 1. sparge water pressure transient, may be less than the pressure of pump chamber; 2. the numerous start-stop of pumping frequency or rotary speed unstabilization are determined, and the pressure in pump chamber varies widely instantaneously.When the pressure of pump chamber is greater than sparge water pressure, the high-pressure medium in pump chamber will flow into mechanical seal cavity one end by the seal clearance in circulating line, impacts and washes away abrasion, hold the wearing and tearing mechanical seal of continuing property to mechanical seal.Mechanical seal can affect the normal service life of mechanical seal after being subject to impulsive load and abrasion.
Summary of the invention
The purpose of this utility model is impulsive load and the abrasion that mechanical seal in order to solve conventional pump sealing configuration can be subject to hard particles, the working life of mechanical seal can be affected, reduce the problems such as the stability of pump, and a kind of Coal Chemical Industry pump one-way seal ring is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Coal Chemical Industry pump one-way seal ring of the present utility model, comprise elastic material and process the positioning ring that Shape-changeable ring and hard material process, the Shape-changeable ring of free state is identical with locating ring structure, be the cone structure of restraining forward, the outer, rear end of cone structure extends outward annular connected unit, the annular connected unit of Shape-changeable ring is identical with the internal-and external diameter of the annular connected unit of positioning ring, the cone structure bore inner diameter of Shape-changeable ring is less than the external diameter of circulating line inwall to be sealed, the cone structure bore inner diameter of positioning ring coordinates with the crest clearance of circulating line inwall to be sealed, Shape-changeable ring and positioning ring are adhesively fixed by respective annular connected unit and form taper component,
The annular connected unit of one-way seal ring is fixed on the outer wall of circulating line to be sealed, the endoporus of one-way seal ring front end Shape-changeable ring is interference fitted in the inwall of circulating line to be sealed, the endoporus of one-way seal ring rear end positioning ring and the inwall Spielpassung of circulating line to be sealed.
The tapering of described one-way seal ring cone structure is 15 ° ~ 45 °.
The matching gap of one-way seal ring rear end positioning ring endoporus and circulating line inwall to be sealed is 0.3mm.
In one-way seal ring the annular connected unit of Shape-changeable ring and the annular connected unit of positioning ring bonding after spacing be not more than 5mm.
Working procedure
When pump runs well, high-pressure washing water enters in the endoporus of one-way seal ring rear end positioning ring and the gap of circulating line inwall to be sealed, and the Shape-changeable ring dilatating and deformable of driven forward one-way seal ring front end, thus make high-pressure washing water through one-way seal ring, realize sparge water and externally circulate; When generating pump cavity pressure is greater than sparge water pressure fortuitous event, one-way seal ring forefront pressure is greater than rear end pressure, the Shape-changeable ring of one-way seal ring front end draws in backward, and the gap blocked between one-way seal ring rear end positioning ring endoporus and circulating line inwall to be sealed, external high pressure medium is made by one-way seal ring, to prevent it from leaking to one-way seal ring rear end; After pump recovers normal operation, high-pressure washing water promotes the Shape-changeable ring dilatating and deformable of one-way seal ring front end again, again realizes sparge water circulation externally, and is gone out by the residual dielectric of one-way seal ring front end, avoids residual dielectric to the wearing and tearing of mechanical seal.
Beneficial effect:
One-way sealing ring structure of the present utility model is simple, easy for installation, and sealing, cooling-down effect reliably, make pump chamber and mechanical seal cavity form half-duplex channel.Sealing pressure relief device of the present utility model can effectively stop entering of external high pressure medium, can ensure that again sparge water realizes the cooling to mechanical seal by sealing channel, greatly improve the working life in conveying hard medium envelope on opportunity, there is important application value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one-way seal ring;
Fig. 2 is the structural representation that the utility model one-way seal ring is applied at Coal Chemical Industry pump;
In figure, 1-impeller; 2-pump cover; 3-throttling pressure relief ring; 4-screw; 5-gland; 6-one-way seal ring; The short cover of 7-mechanical seal.
Embodiment
Illustrate that the present invention is described further with embodiment below in conjunction with accompanying drawing:
Embodiment
As shown in Figure 1, a kind of Coal Chemical Industry pump one-way seal ring 6 of the present utility model, comprise elastic material and process the positioning ring that Shape-changeable ring and hard material process, the Shape-changeable ring of free state is identical with locating ring structure, be the cone structure of restraining forward, the outer, rear end of cone structure extends outward annular connected unit, the annular connected unit of Shape-changeable ring is identical with the internal-and external diameter of the annular connected unit of positioning ring, the cone structure bore inner diameter of Shape-changeable ring is less than the external diameter of the short cover of mechanical seal, the cone structure bore inner diameter of positioning ring coordinates with the crest clearance of the short cover of mechanical seal, Shape-changeable ring and positioning ring are adhesively fixed by respective annular connected unit and form taper component,
Be applied in the sealing configuration of Coal Chemical Industry pump by one-way seal ring 6 of the present utility model, as shown in Figure 2, other peripheral unit comprise the short cover 7 of throttling pressure relief ring 3, gland 5 and mechanical seal;
Throttling pressure relief ring 3 is loop configuration, the outer shroud of throttling pressure relief ring 3 is processed with the ladder platform matched with shape in pump cover 2 front end, the inner ring leading portion internal diameter of throttling pressure relief ring 3 coordinates with impeller 1 connecting end crest clearance, and the inwall of throttling pressure relief ring 3 inner ring leading portion is processed with the rectangle annular groove of interruption, throttling pressure relief ring 3 inner ring back segment has the ring decompression chamber that internal diameter is greater than impeller 1 connecting end external diameter;
The inner ring front end of gland 5 is processed with annular positioning groove;
The front-end face of the short cover 7 of mechanical seal presses closer the ear end face of impeller 1, and the short cover 7 of mechanical seal is sealed by seal ring with the fitting surface of impeller 1, and the short cover 7 of mechanical seal and the sidewall of impeller 1 cooperation place are the circular orientation face of end face; Throttling pressure relief ring 3 front end presses closer pump cover 2 front inner wall by ladder platform structure, gland 5 front end presses closer the rear end of throttling pressure relief ring 3, the annular connected unit of one-way seal ring 6 is inserted in the annular positioning groove of gland 5, screw 4 is simultaneously through gland 5, throttling pressure relief ring 3 and pump cover 2 front inner wall, and envoy flows pressure ring 3 and one-way seal ring 6 axially locating; Now, the circular orientation face Spielpassung of the inner ring leading portion of throttling pressure relief ring 3 and the short cover 7 of mechanical seal and impeller 1 cooperation place, the endoporus of one-way seal ring 6 front end Shape-changeable ring is interference fitted in the sidewall of the short cover 7 of mechanical seal, and the endoporus of one-way seal ring 6 rear end positioning ring coordinates with the sidewall spacers of the short cover 7 of mechanical seal; The rear end of one-way seal ring 6 arranges rinse water arrangement.
The matching gap in the inner ring leading portion of described throttling pressure relief ring 3 and the short cover 7 of mechanical seal and circular orientation face, impeller 1 cooperation place is 0.3mm.
The rectangular ring groove deep of throttling pressure relief ring 3 inner ring leading portion is 1.5mm, groove width is 2mm.
The tapering of one-way seal ring 6 cone structure is 27 °.
The matching gap of one-way seal ring 6 rear end positioning ring endoporus and mechanical seal short cover 7 sidewall is 0.3mm.
In one-way seal ring 6 the annular connected unit of Shape-changeable ring and the annular connected unit of positioning ring bonding after spacing be 4mm.
Working procedure
When pump runs well, high-pressure washing water enters in the endoporus of one-way seal ring 6 rear end positioning ring and the sidewall spacers of the short cover 7 of mechanical seal, and the Shape-changeable ring dilatating and deformable of driven forward one-way seal ring 6 front end, thus make high-pressure washing water through the inner ring of one-way seal ring 6 and throttling pressure relief ring 3, realize the sealing to external agency; When generating pump cavity pressure is greater than sparge water pressure fortuitous event, throttling under the rectangle annular groove effect that first the external high pressure medium entered backward is interrupted at throttling pressure relief ring 3 inner ring leading portion, then realize in the ring decompression chamber entering throttling pressure relief ring 3 inner ring back segment reducing pressure; Now, one-way seal ring 6 forefront pressure is greater than rear end pressure, the Shape-changeable ring of one-way seal ring 6 front end draws in backward, and the gap blocked between one-way seal ring 6 rear end positioning ring endoporus and mechanical seal short cover 7 sidewall, external high pressure medium is made by one-way seal ring 6, to prevent it from leaking to mechanical seal side; After pump recovers normal operation, high-pressure washing water promotes the Shape-changeable ring dilatating and deformable of one-way seal ring 6 front end again, while realization sealing, is gone out by the residual dielectric of throttling pressure relief ring 3 inner ring, avoids residual dielectric to the wearing and tearing of mechanical seal.
Claims (4)
1. a Coal Chemical Industry pump one-way seal ring, it is characterized in that: comprise elastic material and process the positioning ring that Shape-changeable ring and hard material process, the Shape-changeable ring of free state is identical with locating ring structure, be the cone structure of restraining forward, the outer, rear end of cone structure extends outward annular connected unit, the annular connected unit of Shape-changeable ring is identical with the internal-and external diameter of the annular connected unit of positioning ring, the cone structure bore inner diameter of Shape-changeable ring is less than the external diameter of circulating line inwall to be sealed, the cone structure bore inner diameter of positioning ring coordinates with the crest clearance of circulating line inwall to be sealed, Shape-changeable ring and positioning ring are adhesively fixed by respective annular connected unit and form taper component,
The annular connected unit of one-way seal ring is fixed on the outer wall of circulating line to be sealed, the endoporus of one-way seal ring front end Shape-changeable ring is interference fitted in the inwall of circulating line to be sealed, the endoporus of one-way seal ring rear end positioning ring and the inwall Spielpassung of circulating line to be sealed.
2. a kind of Coal Chemical Industry pump one-way seal ring as claimed in claim 1, is characterized in that: the tapering of described one-way seal ring cone structure is 15 ° ~ 45 °.
3. a kind of Coal Chemical Industry pump one-way seal ring as claimed in claim 1 or 2, is characterized in that: the matching gap of one-way seal ring rear end positioning ring endoporus and circulating line inwall to be sealed is 0.3mm.
4. a kind of Coal Chemical Industry pump one-way seal ring as claimed in claim 1 or 2, is characterized in that: in one-way seal ring the annular connected unit of Shape-changeable ring and the annular connected unit of positioning ring bonding after spacing be not more than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779661.4U CN204312388U (en) | 2014-12-10 | 2014-12-10 | A kind of Coal Chemical Industry pump one-way seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779661.4U CN204312388U (en) | 2014-12-10 | 2014-12-10 | A kind of Coal Chemical Industry pump one-way seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312388U true CN204312388U (en) | 2015-05-06 |
Family
ID=53134706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420779661.4U Expired - Fee Related CN204312388U (en) | 2014-12-10 | 2014-12-10 | A kind of Coal Chemical Industry pump one-way seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312388U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454629A (en) * | 2014-12-10 | 2015-03-25 | 襄阳五二五泵业有限公司 | One-way seal ring for coal chemical industry pump |
-
2014
- 2014-12-10 CN CN201420779661.4U patent/CN204312388U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454629A (en) * | 2014-12-10 | 2015-03-25 | 襄阳五二五泵业有限公司 | One-way seal ring for coal chemical industry pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20171210 |