CN204783639U - Quimby pump mechanical seal device - Google Patents
Quimby pump mechanical seal device Download PDFInfo
- Publication number
- CN204783639U CN204783639U CN201520438482.9U CN201520438482U CN204783639U CN 204783639 U CN204783639 U CN 204783639U CN 201520438482 U CN201520438482 U CN 201520438482U CN 204783639 U CN204783639 U CN 204783639U
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- Prior art keywords
- ring
- axle sleeve
- seat
- flexible graphite
- double
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a quimby pump mechanical seal device, including axle sleeve, outer gland, internal gland, a seal assembly, the 2nd seal assembly, a seal assembly is equipped with the sealed pad of flexible graphite including the first rotating ring that sets gradually, first quiet ring, stationary seat, single -ply bellows, transition ring and single -ply bellows seat between single -ply bellows seat and the outer gland, be equipped with the sealed pad of flexible graphite between first rotating ring and the axle sleeve, the 2nd seal assembly is equipped with the sealed pad of flexible graphite including the quiet ring of second, second rotating ring, rotating seat, double -deck welded bellows, transition ring, the double -ply bellows seat that set gradually between the quiet ring of internal gland and second. The utility model discloses a double -deck welding corrugated metal pipe has better intensity, internal gland and outer gland adopt flexible graphite sealed, also help high temperature resistantly, keep apart the liquid end and adopt the sylphon seal to replace the spring sealed, and auxiliary seal adopts flexible graphite, solve the problem that warming -up yin gaowen led to the fact the rubber ring to wear out.
Description
Technical field
The utility model relates to seal arrangement, particularly relates to a kind of double-screw pump mechanical seal device.
Background technique
Existing twin-screw pump, fed sheet of a media is coal tar, insulating liquid is white oil, on pump, first wife's machine envelope is import series seal machine envelope, media end moving ring assembly adopts welded metal bellow sealing, friction pair tungsten carbide button, and auxiliary seal adopts Expanded graphite, stationary ring adopts silicon carbide, and auxiliary seal is perfluoroelastomers circle.Insulating liquid end adopts many springs state type structure, allly assist as fluorine rubber, pump efficiency ring adopts independently straight tooth structure, the axle sleeve of insulating liquid end and the axle sleeve of media end are independently arranged, fluorine rubber is adopted to seal between two axle sleeves, this twin-screw pump serial mechanical seal often re-uses in two to three months to be revealed, insulating liquid end is spring sealed, and seal point is too many, easily causes leakage, and the warming-up stage of fluorine rubber sealing gasket before turn on pump, be easy to aging, cause auxiliary inefficacy, in the process of pump operation, aging aggravation, causes a whole set of seal failure.
Model utility content
For Problems existing in background technique, the utility model object is to provide a kind of double-screw pump mechanical seal device.
For realizing described technical purpose, the utility model adopts following technological scheme to be achieved.
A kind of double-screw pump mechanical seal device, comprises axle sleeve, outer press cover, internal gland, the first black box and the second black box; Described axle sleeve is set on pump shaft; Outer press cover and internal gland are set in the outside of axle sleeve, leave gap between both inwalls and the outer wall of axle sleeve, form Seal cage, outer press cover offer insulating liquid entrance and insulating liquid outlet; Described first black box and the second black box are axially successively set on both sides inside and outside described axle sleeve by pump shaft; The first described black box is included in the first rotating ring, the first stationary ring, stationary seat, singel-ply bellows, the transition ring that pump shaft is axially set in turn in axle sleeve side, and singel-ply bellows seat, described singel-ply bellows seat coordinates with outer press cover, is provided with flexible graphite sealing pad between the two; Flexible graphite sealing pad is provided with between described first rotating ring and axle sleeve; The second described black box be included in pump shaft be axially set in turn in axle sleeve opposite side the second stationary ring, the second rotating ring, rotating seat, dual-layer welding bellows, transition ring, double-ply bellows seat, described internal gland is matched with the second stationary ring, is provided with flexible graphite sealing pad between the two.
As preferably, described axle sleeve side is provided with flow guide sleeve, and described flow guide sleeve is welded on outer press cover.
As preferably, described sleeve end is fixed on pump shaft by fastening screw trip bolt, is provided with retaining ring between described singel-ply bellows seat and fastening screw trip bolt.
The beneficial effects of the utility model are: the utility model media end second black box adopts dual-layer welding metal bellows, and auxiliary seal second stationary ring and internal gland adopt Expanded graphite to replace perfluor ether cushion rubber, can be high temperature resistant better; Adopt Expanded graphite between internal gland and outer press cover, also contribute to high temperature resistant; It is spring sealed that insulating liquid end adopts sylphon seal to replace, and the first black box and outer press cover adopt Expanded graphite to replace original viton seal ring, because of problem that high temperature causes cushion rubber aging during solution warming-up.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: axle sleeve 1; Outer press cover 2; Internal gland 3; Pump shaft 4; Insulating liquid entrance 5; Insulating liquid outlet 6; Spiral pumping ring 7; Fastening screw trip bolt 8; Flow guide sleeve 9; First rotating ring 10; First stationary ring 11; Stationary seat 12; Singel-ply bellows 13; Transition ring 14; Singel-ply bellows seat 15; Flexible graphite sealing pad 16; Retaining ring 17; Second stationary ring 18; Second rotating ring 19; Rotating seat 20; Dual-layer welding bellows 21; Transition ring 22; Double-ply bellows seat 23.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of double-screw pump mechanical seal device described in the utility model, comprises axle sleeve 1, outer press cover 2, internal gland 3, first black box and the second black box.
Described axle sleeve 1 is set on pump shaft 4; Described outer press cover 2 and internal gland 3 are set in the outside of axle sleeve 1, leave gap between both inwalls and the outer wall of axle sleeve 1, form Seal cage, outer press cover 2 offer insulating liquid entrance 5 and insulating liquid outlet 6; Described first black box and the second black box are axially successively set on both sides inside and outside described axle sleeve 1 at pump shaft 4, and form double seals, insulating liquid enters Seal cage through insulating liquid entrance 5.
Described axle sleeve 1 extends to media end from insulating liquid end, and axle sleeve 1 is away from the one-body molded spiral pumping ring 7 in side of pump shaft 4 axis, and axle sleeve 1 is one-body molded with spiral pumping ring 7, not only anti-vibration but also anti-leak point.Described axle sleeve 1 end is fixed on pump shaft 4 by fastening screw trip bolt 8, and described fastening screw trip bolt 8 is import high strength fastening screw trip bolt, makes machine envelope run more steady.Described spiral pumping ring 7 side is provided with the flow guide sleeve 9 be welded on outer press cover 2, and the working surface of spiral pumping ring 7 matches with the inwall of flow guide sleeve 9.
The first described black box comprises: the first rotating ring 10 being axially set in turn in axle sleeve 1 side at pump shaft 4, first stationary ring 11, stationary seat 12, singel-ply bellows 13, transition ring 14, and singel-ply bellows seat 15, described singel-ply bellows seat 15 coordinates with outer press cover 2, is provided with flexible graphite sealing pad 16 between the two.Retaining ring 17 is provided with between described singel-ply bellows seat 15 and fastening screw trip bolt 8; Flexible graphite sealing pad 16 is provided with between described first rotating ring 10 and axle sleeve 1.
The second described black box comprises: the second stationary ring 18, second rotating ring 19, rotating seat 20, dual-layer welding bellows 21, transition ring 22, the dual-layer welding corrugated header 23 that are axially set in turn in axle sleeve 1 opposite side at pump shaft 4, described internal gland 3 is matched with the second stationary ring 18, is provided with flexible graphite sealing pad 16 between the two.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (3)
1. a double-screw pump mechanical seal device, is characterized in that: comprise axle sleeve (1), outer press cover (2), internal gland (3), the first black box and the second black box; Described axle sleeve (1) is set on pump shaft (4); Outer press cover (2) and internal gland (3) are set in the outside of axle sleeve (1), gap is left between the outer wall of both inwalls and axle sleeve (1), form Seal cage, outer press cover (2) offers insulating liquid entrance (5) and insulating liquid outlet (6); Described first black box and the second black box are by being axially successively set on the inside and outside both sides of described axle sleeve (1) at pump shaft (4); The first described black box is included in pump shaft (4) and is axially set in turn in first rotating ring (10) of axle sleeve (1) side, the first stationary ring (11), stationary seat (12), singel-ply bellows (13), transition ring (14) and singel-ply bellows seat (15), described singel-ply bellows seat (15) coordinates with outer press cover (2), is provided with flexible graphite sealing pad (16) between the two; Flexible graphite sealing pad (16) is provided with between described first rotating ring (10) and axle sleeve (1); The second described black box be included in pump shaft (4) be axially set in turn in axle sleeve (1) opposite side the second stationary ring (18), the second rotating ring (19), rotating seat (20), dual-layer welding bellows (21), transition ring (22), double-ply bellows seat (23), described internal gland (3) is matched with the second stationary ring (18), is provided with flexible graphite sealing pad (16) between the two.
2. double-screw pump mechanical seal device according to claim 1, is characterized in that: described axle sleeve (4) side is provided with flow guide sleeve (9), and described flow guide sleeve (9) is welded on outer press cover (2).
3. double-screw pump mechanical seal device according to claim 1, it is characterized in that: described axle sleeve (1) end is fixed on pump shaft (4) by fastening screw trip bolt (8), is provided with retaining ring (17) between described singel-ply bellows seat (15) and fastening screw trip bolt (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520438482.9U CN204783639U (en) | 2015-06-24 | 2015-06-24 | Quimby pump mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520438482.9U CN204783639U (en) | 2015-06-24 | 2015-06-24 | Quimby pump mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783639U true CN204783639U (en) | 2015-11-18 |
Family
ID=54523699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520438482.9U Active CN204783639U (en) | 2015-06-24 | 2015-06-24 | Quimby pump mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240311A (en) * | 2019-07-18 | 2021-01-19 | 河北兆宏机械泵业有限公司 | Shaft seal device |
-
2015
- 2015-06-24 CN CN201520438482.9U patent/CN204783639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240311A (en) * | 2019-07-18 | 2021-01-19 | 河北兆宏机械泵业有限公司 | Shaft seal device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |