CN1300463C - Method of eradicating axial leakage of gear wheel pump - Google Patents
Method of eradicating axial leakage of gear wheel pump Download PDFInfo
- Publication number
- CN1300463C CN1300463C CNB2004100235041A CN200410023504A CN1300463C CN 1300463 C CN1300463 C CN 1300463C CN B2004100235041 A CNB2004100235041 A CN B2004100235041A CN 200410023504 A CN200410023504 A CN 200410023504A CN 1300463 C CN1300463 C CN 1300463C
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- CN
- China
- Prior art keywords
- pump
- pump cover
- leakage
- hole
- cover
- 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
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The present invention relates to a method for preventing the axial leakage of a gear wheel pump. In the method, a ring-shaped groove which is concentric with a shaft hole is arranged at the periphery of the shaft hole of a plane drive wheel in a pump cover, a small vertical hole of which the depth reaches the thickness of the pump cover is drilled in the suction lift range of a pump corresponding to the outer part of the groove, and a straight through hole is drilled on the outer end surface of the pump cover. Thus, the small hole in the suction lift range outside the groove is communicated with the ring-shaped groove. Then, the hole on the outer end surface of the pump cover is plugged by a pipe plug, a press cover of a material filling bin is pressed at the upper part of a sealing material in the material filling bin at the periphery of the drive wheel shaft at the upper surface of the left side of the pump cover. A screw bolt is screwed on, a pressure spring is sheathed to be screwed on by a screw nut. The method of preventing the axial leakage of a gear wheel pump can reach automatic sealing effect. The method not only thoroughly solves the problem of the liquid leakage to the outer part of the pump, but also effectively solves the problem that the suction lift is reduced because of air leakage.
Description
Affiliated technical field
The present invention relates to a kind of pump, especially a kind of gear pump of carrying high-temp liquid.
Background technique
At present, the size shape of gear pump varies, but its basic principle and structure are the machine power live axle, by the driving wheel axis hole on the pump cover, drives the driving gear rotor running that is meshed with the driven gear rotor and finishes the liquid conveying.In the working procedure, the liquid that the range of lift internal pressure raises in the pump remains the movement clearance of passing through between driving gear rotor end-face and the pump cover, along the trend of the movement clearance between live axle and axis hole to the pump external leakage.Equally, inhale negative pressure in the journey scope in the pump air is remained by driving the movement clearance of arbor wheel hole and axle, pass through movement clearance between gear rotor end face and the pump cover and enter and inhale the journey scope, the trend that the suction journey of pump is reduced.In order to address the above problem, in the design of pump and the manufacturing, be provided with the filler storehouse in the outside of driving wheel axle sleeve (bearing), fill materials such as asbestos, graphite in the storehouse, and seal by compressing filler storehouse gland.Also useful commodity mechanical sealing element, rubber seal etc. seal.The sealing of this class, though its sealing material, mode are not quite similar, its working mechanism is with the mode of forced seal and blocks liquid to the pump external leakage.In the operation process of pump since its range of lift in pressure big, wearing and tearing along with filler or Sealing, the axial liquid of pump is leaked has become gear pump, and especially for the ubiquitous problem of gear pump of carrying high-temp liquid, leakage also causes the suction journey of pump to reduce simultaneously even can not work.
Summary of the invention
In order to overcome in the existing pump work, liquid the invention provides a kind of method of eradicating the gear pump axial leakage along the deficiency of the movement clearance between live axle and axis hole to the pump external leakage in the pump, reaches automatic sealing effect with the method for negative pressure resorption in the pump.Not only thoroughly solved the leakage of liquid outside pump, effectively solved simultaneously because gas leakage causes and inhaled the defective that journey reduces.
The technical solution adopted for the present invention to solve the technical problems is: not having the gear pump of leakage cover is by pump cover, bolt, sealing material, filler storehouse gland, spring, nut, plug, axle sleeve compositions such as (bearings), it is around pump cover inner plane driving wheel axis hole, add a circular groove concentric with axis hole, bore a dark vertical aperture that reaches the pump cover mid-depth in the suction journey scope of the outer pairing pump of groove, on the pump cover exterior edge face, bore a clear opening, making groove inhale the interior aperture of journey scope outward is connected with circular groove, block hole on the pump cover exterior edge face with plug then, the sealing material top in the filler storehouse presses filler storehouse gland around the live axle on the left side of pump cover, the bolt of screwing on, put holddown spring, use nut screwing clamping.
In the pump work, liquid when the rising of pumping head scope internal pressure, pass the movement clearance between gear rotor end face and the pump cover, when in the process of pump external leakage, arriving circular groove, promptly the negative pressure of being inhaled in the journey scope by the through hole in the pump cover body siphons away, and leaks to axis hole thereby can not cross between circular groove and the axis hole movement clearance between the formed planar annular and gear rotor end face.Meanwhile, the negative pressure in the circular groove also by the movement clearance between planar annular and rotor end-face, makes to present negative pressure trend in the driving wheel axis hole.Filler in the filler storehouse remains the trend of a direction motion in pump, thereby reaches self-sealing effect under the acting in conjunction of this negative pressure and filler storehouse gland and spring.Not only thoroughly solved the leakage of liquid outside pump, effectively solved simultaneously because gas leakage causes and inhaled the defective that journey reduces.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a gear pump stereogram of eradicating the method for gear pump axial leakage.
Fig. 2 is the gear pump cover inner plane figure that eradicates the method for gear pump axial leakage.
Fig. 3 is a pump cover A-A view of eradicating the method for gear pump axial leakage.
1. springs among the figure, 2. filler storehouse gland, 3. shutoff nut, 4. axle sleeve, 5. driven gear shaft, 6. axle sleeve, 7. live axle, 8. plug, 9. pump cover, 10. sealing material, 11. bolts, 12. nuts.
Embodiment
In Fig. 3 A-A view, around pump cover (9) inner plane driving wheel axis hole, add a circular groove concentric with axis hole, dark aperture that reaches the pump cover mid-depth of vertical brill in the suction journey scope of the outer pairing pump of groove, on the pump cover exterior edge face, bore a clear opening, the aperture that groove is inhaled outward in the journey scope is connected with circular groove, blocks the hole of pump cover exterior edge face with plug (8).Again with live axle (7), driven gear shaft (5), be respectively charged in left side Upper shaft sleeve (6), the right side Upper shaft sleeve (4), with bolt pump cover (9) is fixed on the pump housing, sealing material (10) the filler storehouse of packing into, press filler storehouse gland (2), the shutoff bolt (11) of screwing on then, put holddown spring (1), tighten, the shutoff nut (3) of above driven gear shaft, screwing at last with nut (12).The method of this elimination gear pump axial leakage, axial liquid leakage and the suction journey of thoroughly having eliminated gear pump subtract minor issue.
Claims (2)
1, a kind of method of eradicating the gear pump axial leakage, not having the gear pump of leakage cover is by bolt, nut, spring, filler storehouse gland, pump cover, axle sleeve, plug, sealing material is formed, it is characterized in that: it is around pump cover inner plane driving wheel axis hole, add a circular groove concentric with axis hole, bore a dark vertical aperture that reaches the pump cover mid-depth in the suction journey scope of the outer pairing pump of groove, on the pump cover exterior edge face, bore a clear opening, making groove inhale the interior aperture of journey scope outward is connected with circular groove, block hole on the pump cover exterior edge face with plug then, thereby form the method for negative pressure resorption in the pump.
2, nothing according to claim 1 is leaked gear pump, and it is characterized in that: live axle covers and is screwed with the spring that is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100235041A CN1300463C (en) | 2004-01-06 | 2004-01-06 | Method of eradicating axial leakage of gear wheel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100235041A CN1300463C (en) | 2004-01-06 | 2004-01-06 | Method of eradicating axial leakage of gear wheel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1556329A CN1556329A (en) | 2004-12-22 |
| CN1300463C true CN1300463C (en) | 2007-02-14 |
Family
ID=34352158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100235041A Expired - Fee Related CN1300463C (en) | 2004-01-06 | 2004-01-06 | Method of eradicating axial leakage of gear wheel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1300463C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305292A (en) * | 2011-06-10 | 2012-01-04 | 张家港市兰航机械有限公司 | Shaft sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089990U (en) * | 1991-01-18 | 1991-12-04 | 程樱 | Double direction floating gear pump |
| CN2250294Y (en) * | 1996-05-03 | 1997-03-26 | 丹徒县机械厂 | Vacuum pump for vehicle |
| CN2311634Y (en) * | 1997-02-20 | 1999-03-24 | 周庆耕 | Double-cam follower blade pump |
| CN2339754Y (en) * | 1998-08-07 | 1999-09-22 | 常州飞天集团公司 | Lubricant pump of internal combustion engine |
| CN2675906Y (en) * | 2004-01-06 | 2005-02-02 | 荆平平 | Non-leakage gear pump |
-
2004
- 2004-01-06 CN CNB2004100235041A patent/CN1300463C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089990U (en) * | 1991-01-18 | 1991-12-04 | 程樱 | Double direction floating gear pump |
| CN2250294Y (en) * | 1996-05-03 | 1997-03-26 | 丹徒县机械厂 | Vacuum pump for vehicle |
| CN2311634Y (en) * | 1997-02-20 | 1999-03-24 | 周庆耕 | Double-cam follower blade pump |
| CN2339754Y (en) * | 1998-08-07 | 1999-09-22 | 常州飞天集团公司 | Lubricant pump of internal combustion engine |
| CN2675906Y (en) * | 2004-01-06 | 2005-02-02 | 荆平平 | Non-leakage gear pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305292A (en) * | 2011-06-10 | 2012-01-04 | 张家港市兰航机械有限公司 | Shaft sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1556329A (en) | 2004-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20070214 Termination date: 20100208 |