CN2339809Y - Sealing device of oil-delivery pump - Google Patents
Sealing device of oil-delivery pump Download PDFInfo
- Publication number
- CN2339809Y CN2339809Y CN 97241416 CN97241416U CN2339809Y CN 2339809 Y CN2339809 Y CN 2339809Y CN 97241416 CN97241416 CN 97241416 CN 97241416 U CN97241416 U CN 97241416U CN 2339809 Y CN2339809 Y CN 2339809Y
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- utility
- oil
- model
- pump
- gland
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- Expired - Fee Related
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Abstract
The utility model relates to a sealing device of an oil-delivery pump. A double-screw sealing device is arranged in a seal cavity of the utility model. The utility model mainly solves the problems of short life time and high cost of a mechanical seal of the oil-delivery pump. The utility model is characterized in that a pump shaft and a pump body are respectively provided with a rotary screw sleeve and a short sleeve, and a fixing screw sleeve and a pressure relief ring; the outlet end of the press cover is provided with an oil seal; the rotary screw sleeve is in clearance fit with the fixing screw sleeve; a rotary screw sleeve, the short sleeve and the pump shaft are in flat key connection. The utility model can realize a non-contact type seal on oil delivery pumps, such as D-4X11MSN-l, etc. The utility model has the advantages of small friction, simple structure, less maintenance, electricity saving, investment saving, practicality, and long service life.
Description
The utility model relates to a kind of spiral sealing device, the double helix seal arrangement of oil transfer pumps such as particularly a kind of suitable D-4X11MSN-L, 4X10DA-6 and DZ150X250 * 10.
Import oil transfer pump such as D-4X11MSN-L, 4X10DA-6 and DZ150X250 * 10 and homemade pump all adopt mechanical seal, comprise the pump housing, pump shaft, gland, hydraulic pressure ring, screw thread cover and mechanical seal etc.Its deficiency is: one, owing to mechanical seal manufacturing, assembly precision require height, and working life is short, thereby causes in use frequently changing mechanical seal, therefore operating cost is higher, and influence ordinary production, particularly change domestic machinery sealing after, then the frequency of Geng Huaning is higher; Two, screw thread is applied mechanically dowel fixes, and pin is horizontally through pump shaft, thereby requires manufacturing, installation precision height, when pin is shifted, and the fragile pump housing.
The purpose of this utility model is exactly to provide at above-mentioned deficiency oil transfer pump such as a kind of suitable D-4X11MSN-L, 4X10DA-6 and DZ150X250 * 10 and good sealing effect, long service life, seal arrangement that cost is low.Be applied on the said pump for making, must carry out structure of modification whole sealing system.
Technical solution of the present utility model is: a kind of oil transfer pump seal arrangement, comprise the gland that is fixed in pump housing end and the pressure-reducing ring on the capsule walls, it is characterized in that: on pump shaft, adopt flat key to connect one and have and stretch out the short of gland with the rotating screw cover of pump shaft rotation direction opposite helical groove and an end and overlap.Outlet end at gland is provided with oil sealing.In the Seal cage between pressure-reducing ring and gland and the oil sealing, be provided with a rotation direction fixedly screw-casing opposite and that have the spiral groove with rotating screw cover rotation direction, that make with nonmetallic material, this rotating screw cover and fixing Spielpassung between the screw-casing.
Short cover external port described in the utility model technical solution can have inside groove, is provided with " O " type circle in this groove.Short cover outer end is provided with the hold-down ring that cooperates with inside groove and reaches fixedly round nut.
The utility model is owing to be respectively equipped with fixedly screw-casing and pressure-reducing ring and rotating screw cover and short cover on the pump housing and pump shaft, be provided with oil sealing in the gland external port, and, fixedly screw-casing and rotating screw put and are provided with the opposite spiral groove of rotation direction, thereby has a stronger ability that fed sheet of a media is moved in the opposite direction toward leakage side, thereby on import oil transfer pumps such as D-4X11MSN-L, realized " contactless " sealing, had that friction is little, simple in structure, amount of maintenance is little, an economize on electricity, joint money, practical characteristics.Because adopt the rotating screw cover, and the pin of cancellation screw thread cover and connecting filament retaining ring thereof and axle, and adopt flat key to connect, thereby have higher reliability, the not fragile pump housing.The utlity model has good sealing effect, the characteristics of long service life.
Accompanying drawing is a structural representation of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing: as shown in the figure, the pump housing 3, pump shaft 4, pressure-reducing ring 2 are the original paper of D4X11MSN-L oil transfer pump.Rotating screw cover 1 and short cover 9 are fixed on the pump shaft 4 through flat key 5.Rotating screw cover 1 is provided with the spiral groove opposite with pump shaft 4 rotation directions, and short cover 9 external port have inside groove, and two " O " type circles 12 are housed in it, and its outer hold-down ring 11 that is provided with cooperation is with the synchronous rotary component of two round helicals 10 formation and pump shaft 4.Gland 7 external port have groove, and oil sealing 13 is housed in it, and fix with pressing plate.Gland 7 usefulness bolts 6 and nut 8 are fixed on the pump housing 3.Fixedly screw-casing 14 is between pressure-reducing ring 2 and oil sealing 13, have on it with rotating screw and overlap the spiral groove that 1 rotation direction is opposite, parameter is identical, make with nonmetallic material, preferably the graphite epoxy resin dipping has low, high temperature resistant, the anticorrosive advantage of cost.Part material is that flat key 5 and short cover 9 are 45 steel heat treatments during design, and hold-down ring 11 usefulness A3 get final product, and round nut 10 palpuses are with twice heat treatment of 45 steel." O " type circle 12 and oil sealing 13 are standard piece, are the rubber parts of high-temperature-resistant and anti-corrosion.
Claims (2)
1, a kind of oil transfer pump seal arrangement, comprise the gland (7) that is fixed in the pump housing (3) end and the pressure-reducing ring (2) on the capsule walls, it is characterized in that: go up at pump shaft (4) and connect one with flat key (5) and have the weak point that stretches out gland (7) with the rotating screw cover (1) of pump shaft (4) rotation direction opposite helical groove and end and overlap (9); Outlet end at gland (7) is provided with oil sealing (13); In the Seal cage between pressure-reducing ring (2) and gland (7) and the oil sealing (13), be provided with a rotation direction fixedly screw-casing (14) opposite with rotating screw cover (1) rotation direction and that have the spiral groove, that make with nonmetallic material, this rotating screw cover (1) and fixing Spielpassung between the screw-casing (14).
2, oil transfer pump seal arrangement according to claim 1 is characterized in that: described short cover (9) external port has inside groove, is provided with " O " type circle in this groove; Short cover (9) outer end is provided with the hold-down ring (11) that cooperates with inside groove and reaches fixedly round nut (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241416 CN2339809Y (en) | 1997-10-20 | 1997-10-20 | Sealing device of oil-delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241416 CN2339809Y (en) | 1997-10-20 | 1997-10-20 | Sealing device of oil-delivery pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2339809Y true CN2339809Y (en) | 1999-09-22 |
Family
ID=33950894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97241416 Expired - Fee Related CN2339809Y (en) | 1997-10-20 | 1997-10-20 | Sealing device of oil-delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2339809Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654862B (en) * | 2004-02-12 | 2012-09-05 | 韦尔矿物非洲(私人)有限公司 | A seal for sealing between components of a rotary machine |
-
1997
- 1997-10-20 CN CN 97241416 patent/CN2339809Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654862B (en) * | 2004-02-12 | 2012-09-05 | 韦尔矿物非洲(私人)有限公司 | A seal for sealing between components of a rotary machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |