CN2148836Y - Gear pump - Google Patents
Gear pump Download PDFInfo
- Publication number
- CN2148836Y CN2148836Y CN 92241646 CN92241646U CN2148836Y CN 2148836 Y CN2148836 Y CN 2148836Y CN 92241646 CN92241646 CN 92241646 CN 92241646 U CN92241646 U CN 92241646U CN 2148836 Y CN2148836 Y CN 2148836Y
- Authority
- CN
- China
- Prior art keywords
- pump
- magnet steel
- gear pump
- pressure
- interior magnet
- 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.)
- Expired - Fee Related
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a gear pump comprising a static sealing device composed of an outer magnetic steel, an isolation jacket and an inner magnetic steel, and the gear pump can ensure the medium no leakage. An inner magnetic steel chamber whose pressure is adjustable is provided with a pressure limiting valve, so the pressure of the medium leaked into the inner magnetic steel chamber can be kept in an allowable range. The thickness of the isolation jacket can be thinned, so the magnetic gap is reduced, the magnetic consumption is reduced, and the efficiency of the pump is improved. The gear pump can not have leakage phenomenon, so the gear pump is suitable for conveying liquids of virulent, inflammable, corruptible and susceptible and other noble liquids.
Description
The utility model relates to a kind of gear pump.
Mechanical seal structure is normally adopted in the axial seal of gear pump, because the pump chamber pressure height of gear pump, therefore, mechanical seal is worn and torn easily, and finally causes dielectric leakage.
The purpose of this utility model provides a kind of leak free gear pump.
The solution of above-mentioned purpose is: seal arrangement adopts the quiet closely packed of being made up of outer steel, separation sleeve and interior magnet steel to put, wherein outer steel and interior magnet steel be installed on motor shaft and the pump shaft respectively, magnet steel in the separation sleeve cover cap, interior magnet steel is isolated with outer steel, and the interior magnet steel chamber of formation sealing, the pressure-limit valve in magnet steel chamber in also being provided with on the pump housing, the drainage pipe of this pressure-limit valve communicates with the liquid inlet pipe of pump.
Further illustrate particular content of the present utility model below in conjunction with drawings and Examples.
Fig. 1: structure diagram of the present utility model;
Fig. 2: A-A sectional view.
As shown in the figure: gear pump described in the utility model is by pump, static seal device and motor are formed, pump links together with motor by hitch 1, static seal device promptly is arranged in the hitch 1, static seal device is by outer steel 2, separation sleeve 3 and interior magnet steel 4 are formed, wherein outer steel 2 and interior magnet steel 4 are installed in respectively on motor shaft 5 and the pump shaft 6, magnet steel 4 in separation sleeve 3 cover caps, interior magnet steel 4 is isolated with outer steel 2, and the interior magnet steel chamber 7 of formation sealing, the driving gear 8 of pump and driven gear 9 are bearing in by protecgulum 10 by bearing, in the pump housing that bonnet 11 and pump case 12 are formed, also be provided with liquid inlet pipe 13 on the pump housing, the pressure-limit valve in drain pipe 14 and interior magnet steel chamber 7, pressure-limit valve is by spool 15, spring 16, jackscrew 17 and drainage pipe 18 are formed, wherein spool 15, spring 16 and jackscrew 17 are contained in the valve pocket 19, and drainage pipe 18 communicates with liquid inlet pipe 13.In interior magnet steel chamber 7, interior magnet steel 4 will be with the contact of the medium from the pump chamber internal leakage to interior magnet steel chamber 7.Therefore, the jacket 20 that the surface of interior magnet steel 4 answers topped one deck to make of resistant material, in addition, if this gear pump is used for carrying aggressive mediums such as acid, alkali, salt, so, all additional one deck resistant materials of component surface that all should adopt the resistant material manufacturing or make at steel with the aggressive medium parts in contact.
The gear pump of said structure has replaced known dynamic seal apparatus with static seal device, can guarantee definitely that medium does not leak, in addition, pressure medium in the pressure-limit valve of adjustable in pressure can make and leak out in the magnet steel chamber remains in the scope of permission, like this, the design wall thickness of separation sleeve can attenuate, thereby dwindled magnetic gap, reduced the magnetic consumption, improved the efficient of pump, therefore, the utility model is a kind of complete leak free gear pump, is specially adapted to carry liquid and other precious liquid of severe toxicity, inflammable, perishable, easy pollution.
Claims (1)
1, a kind of gear pump, form by pump, seal arrangement, motor, it is characterized in that: the static seal device that seal arrangement is made up of outer steel (2), separation sleeve (3) and interior magnet steel (4), wherein outer steel (2) and interior magnet steel (4) are installed in respectively on motor shaft (5) and the pump shaft (6), magnet steel (4) in separation sleeve (3) cover cap, the same outer steel of interior magnet steel (4) (2) is isolated, and the interior magnet steel chamber (7) of formation sealing, the pressure-limit valve in magnet steel chamber in also being provided with on the pump housing, the drainage pipe (18) of this pressure-limit valve communicates with the liquid inlet pipe (13) of pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92241646 CN2148836Y (en) | 1992-11-23 | 1992-11-23 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92241646 CN2148836Y (en) | 1992-11-23 | 1992-11-23 | Gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2148836Y true CN2148836Y (en) | 1993-12-08 |
Family
ID=33781669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92241646 Expired - Fee Related CN2148836Y (en) | 1992-11-23 | 1992-11-23 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2148836Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156165A (en) * | 2020-01-15 | 2020-05-15 | 常州市鑫士博机械有限公司 | Small-flow single-shaft forward and reverse screw extrusion type magnetic force driving pump |
-
1992
- 1992-11-23 CN CN 92241646 patent/CN2148836Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156165A (en) * | 2020-01-15 | 2020-05-15 | 常州市鑫士博机械有限公司 | Small-flow single-shaft forward and reverse screw extrusion type magnetic force driving pump |
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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 |