CN109695572A - A kind of sealing device of gear pump - Google Patents
A kind of sealing device of gear pump Download PDFInfo
- Publication number
- CN109695572A CN109695572A CN201711003917.7A CN201711003917A CN109695572A CN 109695572 A CN109695572 A CN 109695572A CN 201711003917 A CN201711003917 A CN 201711003917A CN 109695572 A CN109695572 A CN 109695572A
- Authority
- CN
- China
- Prior art keywords
- sealing device
- retaining ring
- gear
- pump
- pressure pad
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
A kind of sealing device of gear pump, including the pump housing, driving gear and driven gear, the driving gear and driven gear are mounted on pump body, sealing device is installed at the spindle nose of the driving gear, it is characterized by: the sealing device includes reinforced seal, retaining ring and pressure pad, for the retaining ring between reinforced seal and pressure pad, retaining ring is polytetrafluoroethylene (PTFE) retaining ring, and the pressure pad is steel disc.
Description
Technical field
A kind of sealing device of gear pump of the present invention.
Background technique
Gear pump is that swept volume changes and movement is to convey liquid or make by being formed by between pumping cylinder and meshing gear
Pressurization drum pump.Two enclosure spaces are formed by two gears, the pump housing and front and rear covers, when gear rotation, are out of gear
The volume in the space of side becomes larger from small, forms vacuum, draws liquid into, the volume in the space of gear engagement side from becoming smaller greatly, and
Liquid is squeezed into pipeline.Suction chamber and discharge chamber are that the path of contact of two gears is leaned on to separate.The outlet of gear pump
Pressure depend entirely on pump out place resistance size.Since equipment needs, sealing dress can be all set at the spindle nose of gear pump
It sets, prevents oil leak, traditional gear pump is all the mounting framework oil sealing at spindle nose, the working characteristics based on gear pump, inside
Pressure it is very big, and the rated pressure of outside framework oil seal is between 0.02~0.05MPa, when being greater than this pressure, it is easy to make
At lip phenomenon is turned over, so that sealing device fails.
Summary of the invention
The purpose of the present invention is overcoming the defect of existing technology and deficiency, the tooth that a kind of structure is simple, sealing effect is good is provided
The sealing device of wheel pump.
In order to achieve the above object, the technical solution of the invention is as follows: a kind of sealing device of gear pump, including the pump housing,
Driving gear and driven gear, the driving gear and driven gear are mounted on pump body, at the spindle nose of the driving gear
Sealing device is installed, it is characterised in that: the sealing device includes reinforced seal, retaining ring and pressure pad, and the retaining ring is located at bone
Between frame sealing and pressure pad, retaining ring is polytetrafluoroethylene (PTFE) retaining ring, and the pressure pad is steel disc.
The present invention on the basis of traditional outside framework oil seal, use corrosion resistance, good airproof performance polytetrafluoroethylene (PTFE) as
Retaining ring, and install steel disc additional after retaining ring, so that the anti-pressure ability of sealing device reaches 10Mpa, greatly strengthen sealing
The sealing effect of device ensure that the stability of gear pump, and the sealing device structure is simple, at low cost, long service life.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: the pump housing 1, driving gear 2, driven gear 3, sealing device 4, reinforced seal 5, retaining ring 6, pressure pad 7.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1, a kind of sealing device of gear pump, including the pump housing 1, driving gear 2 and driven gear 3, the active
Gear 2 and driven gear 3 are mounted on inside the pump housing 1, and sealing device 4, the sealing are equipped at the spindle nose of the driving gear 2
Device 4 includes reinforced seal 5, retaining ring 6 and pressure pad 7, and between reinforced seal 5 and pressure pad 7, the retaining ring 6 is the retaining ring 6
Polytetrafluoroethylene (PTFE) retaining ring, the pressure pad 7 are steel disc.
Claims (1)
1. a kind of sealing device of gear pump, including the pump housing (1), driving gear (2) and driven gear (3), the driving gear
(2) and driven gear (3) is mounted on the pump housing (1) inside, is equipped with sealing device (4) at the spindle nose of the driving gear (2),
Be characterized in that: the sealing device (4) includes reinforced seal (5), retaining ring (6) and pressure pad (7), and the retaining ring (6) is located at skeleton
It seals between (5) and pressure pad (7), retaining ring (6) is polytetrafluoroethylene (PTFE) retaining ring, and the pressure pad (7) is steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003917.7A CN109695572A (en) | 2017-10-24 | 2017-10-24 | A kind of sealing device of gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003917.7A CN109695572A (en) | 2017-10-24 | 2017-10-24 | A kind of sealing device of gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109695572A true CN109695572A (en) | 2019-04-30 |
Family
ID=66227959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711003917.7A Pending CN109695572A (en) | 2017-10-24 | 2017-10-24 | A kind of sealing device of gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109695572A (en) |
-
2017
- 2017-10-24 CN CN201711003917.7A patent/CN109695572A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190430 |
|
| WD01 | Invention patent application deemed withdrawn after publication |