CN202900612U - High pressure pump input shaft oil sealing structure - Google Patents
High pressure pump input shaft oil sealing structure Download PDFInfo
- Publication number
- CN202900612U CN202900612U CN2012205250940U CN201220525094U CN202900612U CN 202900612 U CN202900612 U CN 202900612U CN 2012205250940 U CN2012205250940 U CN 2012205250940U CN 201220525094 U CN201220525094 U CN 201220525094U CN 202900612 U CN202900612 U CN 202900612U
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- China
- Prior art keywords
- oil
- bearing
- input shaft
- reducer shell
- sealing
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- Expired - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model provides a high pressure pump input shaft oil sealing structure, and belongs to the technical field of machinery. The problem that the existing input shaft oil sealing is easy to lose effectiveness and to leak oil is solved. The high pressure pump input shaft oil sealing structure comprises a speed reducer shell body, a first bearing, a second bearing, an output shaft, a pressing cover, a sealing ring and an oil sealing. A separating plate is arranged between the first bearing and the second bearing. The separating plate is pressed tightly by the first bearing and the second bearing. A hollow cavity is arranged between the separating plate and the shell body. An oil inlet hole is arranged in the upper portion of the speed reducer shell body in an opening mode. The oil inlet hole is communicated with the hollow cavity. An oil return groove is arranged on a position between a sealing ring and an input shaft. An oil accumulating cavity is formed between the pressing cover and the lower end of the speed reducer shell body. The oil accumulating cavity is communicated with the oil return groove. An oil return hole is further arranged at the lower end of the speed reducer shell body. The oil return hole is communicated with the oil accumulating cavity. According to the high pressure pump input shaft oil sealing structure, two-level sealing of a double oil sealing is adopted. A sealing effect is good and oil leakage is not easy to happen.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of fertilizer production equipment, particularly a kind of high-pressure service pump input shaft oil seal structure.
Background technique
Existing urea often is planetary reducer with the high-pressure service pump retarder, the oil sealing of its input shaft is generally the skeleton-type oil seal of single-stage, because input shaft is high speed shaft, the phenomenons such as aging and be full of cracks often occur in the outside framework oil seal rubber parts, input shaft galled spots and wearing and tearing are also more serious simultaneously, lubricant oil on the input shaft relies on its adhesion easily along the input shaft surface creep, and when the quality on input shaft surface slightly descended, oil was easy to cause lubricating oil leakage by the outside framework oil seal lip.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for prior art, proposes preferably high-pressure service pump input shaft oil seal structure of a kind of sealability.
The purpose of this utility model can realize by following technical proposal: a kind of high-pressure service pump input shaft oil seal structure is provided, comprise reducer shell, be connected to clutch shaft bearing and the second bearing on the reducer shell inwall, intert input shaft in clutch shaft bearing and the second bearing, the gland of sealing reducer shell one end opening, be socketed on the input shaft and the seal ring between gland and the second bearing, be arranged on the oil sealing between seal ring and the gland, be provided with space bar between described clutch shaft bearing and the second bearing, described space bar is compressed by described clutch shaft bearing and the second bearing, has a cavity between described space bar and the housing, the top of described reducer shell offers oil inlet hole, described oil inlet hole is communicated with cavity, position between described seal ring and the input shaft is provided with oil-return groove, be formed with long-pending oil pocket between the lower end of described gland and reducer shell, described long-pending oil pocket is communicated with oil-return groove, the lower end of described reducer shell also is provided with spill port, and described spill port is communicated with long-pending oil pocket.
In above-mentioned high-pressure service pump input shaft oil seal structure, be formed with limiting platform on the inwall of described reducer shell, described clutch shaft bearing one side is resisted against on the limiting platform, and the right side of described the second bearing arranges limited location snap ring.
In above-mentioned high-pressure service pump input shaft oil seal structure, described gland is connected with the reducer shell bolt.
Compared with prior art, according to high-pressure service pump input shaft oil seal structure of the present utility model, adopted the two-stage sealing of seal ring and oil sealing, good sealing effect is difficult for occuring leakage of oil.
Description of drawings
Fig. 1 is the schematic diagram of high-pressure service pump input shaft oil seal structure of the present utility model;
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, according to high-pressure service pump input shaft oil seal structure of the present utility model, comprise reducer shell 1, be connected to clutch shaft bearing 2 and the second bearing 3 on reducer shell 1 inwall, intert input shaft 4 in clutch shaft bearing 2 and the second bearing 3, the gland 5 of sealing reducer shell 1 one end openings, be socketed on the input shaft 4 and the seal ring 6 between gland 5 and the second bearing 3, be arranged on the oil sealing 7 between seal ring 6 and the gland 5, be provided with space bar 8 between described clutch shaft bearing 2 and the second bearing 3, described space bar 8 is compressed by described clutch shaft bearing 2 and the second bearing 3, has a cavity 9 between described space bar 8 and the housing 1, the top of described reducer shell 1 offers oil inlet hole 10, described oil inlet hole 10 is communicated with cavity 9, position between described seal ring 6 and the input shaft 4 is provided with oil-return groove 12, be formed with long-pending oil pocket 13 between the lower end of described gland 5 and reducer shell 1, described long-pending oil pocket 13 is communicated with oil-return groove 12, the lower end of described reducer shell also is provided with spill port 14, and described spill port 14 is communicated with long-pending oil pocket 13.
In above-mentioned high-pressure service pump input shaft oil seal structure, described clutch shaft bearing 2 and the second bearing 3 are rolling bearing.
The machine oil of lubricated clutch shaft bearing 2 and the second bearing 3 usefulness enters into cavity 9 by oil inlet hole 10, rotation spray lubrication clutch shaft bearing 2 and the second bearing 3 along with input shaft 4, unnecessary machine oil enters into oil-return groove by the second bearing, machine oil in the oil-return groove enters into long-pending oil pocket 13 again, flows out by spill port at last and reclaims.
In above-mentioned high-pressure service pump input shaft oil seal structure, be formed with limiting platform 15 on the inwall of described reducer shell 1, described clutch shaft bearing 2 one sides are resisted against on the limiting platform 15, and the right side of described the second bearing 3 arranges limited location snap ring 16.Limiting platform 15, limited location snap ring 16 are with clutch shaft bearing and the second bearing location.
In above-mentioned high-pressure service pump input shaft oil seal structure, described gland 5 is connected with reducer shell 1 bolt.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
1. high-pressure service pump input shaft oil seal structure, it is characterized in that, comprise reducer shell, be connected to clutch shaft bearing and the second bearing on the reducer shell inwall, intert input shaft in clutch shaft bearing and the second bearing, the gland of sealing reducer shell one end opening, be socketed on the input shaft and the seal ring between gland and the second bearing, be arranged on the oil sealing between seal ring and the gland, be provided with space bar between described clutch shaft bearing and the second bearing, described space bar is compressed by described clutch shaft bearing and the second bearing, has a cavity between described space bar and the housing, the top of described reducer shell offers oil inlet hole, described oil inlet hole is communicated with cavity, position between described seal ring and the input shaft is provided with oil-return groove, be formed with long-pending oil pocket between the lower end of described gland and reducer shell, described long-pending oil pocket is communicated with oil-return groove, the lower end of described reducer shell also is provided with spill port, and described spill port is communicated with long-pending oil pocket.
2. high-pressure service pump input shaft oil seal structure according to claim 1 is characterized in that, is formed with limiting platform on the inwall of described reducer shell, and described clutch shaft bearing one side is resisted against on the limiting platform, and the right side of described the second bearing arranges limited location snap ring.
3. high-pressure service pump input shaft oil seal structure according to claim 1 is characterized in that, described gland is connected with the reducer shell bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205250940U CN202900612U (en) | 2012-09-30 | 2012-09-30 | High pressure pump input shaft oil sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205250940U CN202900612U (en) | 2012-09-30 | 2012-09-30 | High pressure pump input shaft oil sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900612U true CN202900612U (en) | 2013-04-24 |
Family
ID=48121290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205250940U Expired - Fee Related CN202900612U (en) | 2012-09-30 | 2012-09-30 | High pressure pump input shaft oil sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900612U (en) |
-
2012
- 2012-09-30 CN CN2012205250940U patent/CN202900612U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20130930 |