CN202250818U - Gear pump with dual side plates - Google Patents
Gear pump with dual side plates Download PDFInfo
- Publication number
- CN202250818U CN202250818U CN2011203534445U CN201120353444U CN202250818U CN 202250818 U CN202250818 U CN 202250818U CN 2011203534445 U CN2011203534445 U CN 2011203534445U CN 201120353444 U CN201120353444 U CN 201120353444U CN 202250818 U CN202250818 U CN 202250818U
- Authority
- CN
- China
- Prior art keywords
- gear
- pressure plate
- pump
- protecgulum
- bonnet
- 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 utility model relates to a gear pump with dual side plates, comprising a front cover, a rear cover, and an intermediate body arranged between the front cover and the rear cover. A pump body is formed by the front cover, the rear cover and the intermediate body, and is internally provided with a driving gear and a driven gear meshed with the driving gear, and pressure plates are arranged between the side surfaces of the driving gear and the driven gear and the pump body. The gear pump with the dual side plates is characterized in that the pressure plates are respectively arranged between two sides of the driving gear and the driven gear and the front cover of the pump body, and between two sides of the driving gear and the driven gear and the rear cover of the pump body. Compared with a traditional pump, the gear pump with the dual side plates has the advantages of simple structure, long service life, good work performance and high product percent of pass.
Description
Technical field
The utility model belongs to the gear pump technical field, particularly relates to a kind of gear pump with dual-sided board.
Background technique
Gear pump is to rely between the pump housing and engaging gear formed swept volume to change and move the rotary pump of carrying liquid or making it supercharging.Comprise driving gear, driven gear and the pump housing of being made up of protecgulum, bonnet and intermediate, two gears make and constitute two enclosed spaces in the pump housing, and gear rotates liquid is sucked or extrude the pump housing.Gear pump is an easily damaged parts, because the gear of pump housing inside is long-time and the side friction of the pump housing, thereby makes the pump housing and gear wear, in the existing structure; In order to prolong the working life of gear pump, be provided with pressure plate in a side of driving gear and driven gear, be provided with seal ring in the pressure plate; Pressure plate can in time remedy the wear extent between the gear and the pump housing, still, and in existing gear pump structure; Only between the inner side surface of bonnet and gear, be provided with pressure plate, and therefore the external diameter of pressure plate can not in time remedy the wear extent between gear and the protecgulum inner side surface greater than the internal diameter of intermediate; Cause hydraulic oil to reveal easily, influence the volumetric efficiency of gear pump, sealing effect is not good; When especially the wear extent between the gear and the pump housing was excessive, pressure plate was stopped by intermediate and can not remedy wear extent, causes seal failure.
Summary of the invention
The utility model provides a kind of simple in structure, long service life for solving the technical problem that exists in the known technology, favorable working performance, and the gear pump of the high dual-sided board of product percent of pass.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of dual-sided board gear pump; Comprise protecgulum, bonnet and be arranged on protecgulum and bonnet between intermediate; Protecgulum, bonnet and intermediate constitute the pump housing; The driven gear that is provided with driving gear in the inside of the said pump housing and meshes with driving gear; Be provided with pressure plate between the side of driving gear, driven gear and the pump housing, it is characterized in that: be provided with pressure plate between the both sides of said driving gear, driven gear and the protecgulum of the pump housing, the bonnet.
The utility model can also adopt following technological scheme:
Said pressure plate comprises preceding pressure plate that contacts with the inner side surface of protecgulum and the back pressure plate that contacts with the inner side surface of bonnet.
The external diameter of said at least one pressure plate is less than the internal diameter of said intermediate.
Be equipped with seal groove on the surface of contact of the surface of contact of pressure plate and protecgulum and back pressure plate and bonnet before said, be provided with O-ring seal in the said seal groove.
Advantage and the good effect that the utlity model has are: because the utility model adopts as above technological scheme; Promptly all be equipped with pressure plate, so, produce wearing and tearing no matter the protecgulum of the pump housing and gear wear produce the bonnet and the gear of the wearing and tearing or the pump housing in the both sides of gear; The pressure plate that is positioned at the gear both sides can both in time remedy wear extent; Avoid producing bigger gap hydraulic oil is revealed, thereby stablize the volumetric efficiency of gear pump, the working life of improving gear pump; The external diameter of at least one pressure plate makes pressure plate can reach in the intermediate less than the internal diameter of said intermediate, under the condition of any wear extent, can both guarantee the sealing effect of gear and pump housing spare; The inner side surface of pump housing protecgulum can produce error in course of working; Be provided with O-ring seal in the seal groove of pressure plate; O-ring seal can make pressure plate and gear side keeping parallelism at any time, thereby remedies the machining error of the eccentric wear and the protecgulum of gear face and pressure plate, and the up-to-standard rate of product is high.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, protecgulum; 2, bonnet; 3, intermediate; 4, driving gear; 5, driven gear; 6, preceding pressure plate; 7, back pressure plate; 8, O-ring seal.
Embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1; A kind of dual-sided board gear pump comprises protecgulum 1, bonnet 2 and intermediate 3, is equipped with pin-and-hole on protecgulum 1, bonnet 2 and the intermediate 3; The locating stud that protecgulum 1, bonnet 2 and intermediate 3 usefulness are passed pin-and-hole positions, and fastening to constitute the pump housing through screw.Be provided with intermeshing driving gear 4 and driven gear 5 in pump housing inside; Be equipped with pressure plate between two sides of driving gear 4 and driven gear 5 and the pump housing, the pressure plate between the inner side surface of protecgulum 1 and driving gear 4, driven gear 5 sides is preceding pressure plate 6; Pressure plate between the inner side surface of bonnet 2 and driving gear 4, driven gear 5 sides is a back pressure plate 7; Wherein the external diameter of at least one pressure plate is less than the internal diameter of intermediate 3; In the present embodiment; The external diameter of preceding pressure plate 6 is less than the internal diameter of intermediate 3, and when wearing and tearing took place in two sides of gear, preceding pressure plate 6 all can in time remedy wear extent with back pressure plate 7.But when back pressure plate 7 remedied wear extent to certain limit, 6 of preceding pressure plates can continue to bring into play the effect that remedies wear extent.
Be equipped with seal groove on the surface of contact of preceding pressure plate and protecgulum and the surface of contact of back pressure plate and bonnet; Be provided with O-ring seal 8 in the sealing groove; O-ring seal 8 can make pressure plate and gear side keeping parallelism at any time; Thereby remedy the eccentric wear of gear face and pressure plate and the machining error of protecgulum inner side plane, the up-to-standard rate of product is high.Be the balance of height nip in the maintenance work, the zone of high pressure shape after pressure plate is enlarged has been carried out accurate Calculation.
Claims (4)
1. dual-sided board gear pump; Comprise protecgulum, bonnet and be arranged on protecgulum and bonnet between intermediate; Protecgulum, bonnet and intermediate constitute the pump housing; The driven gear that is provided with driving gear in the inside of the said pump housing and meshes with driving gear is provided with pressure plate between the side of driving gear, driven gear and the pump housing, it is characterized in that: be provided with pressure plate between the both sides of said driving gear, driven gear and the protecgulum of the pump housing, the bonnet.
2. dual-sided board gear pump according to claim 1 is characterized in that: said pressure plate comprises preceding pressure plate that contacts with the inner side surface of protecgulum and the back pressure plate that contacts with the inner side surface of bonnet.
3. dual-sided board gear pump according to claim 1 and 2 is characterized in that: the external diameter of said at least one pressure plate is less than the internal diameter of said intermediate.
4. dual-sided board gear pump according to claim 2 is characterized in that: be equipped with seal groove on the surface of contact of the surface of contact of pressure plate and protecgulum and back pressure plate and bonnet before said, be provided with O-ring seal in the said seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203534445U CN202250818U (en) | 2011-09-20 | 2011-09-20 | Gear pump with dual side plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203534445U CN202250818U (en) | 2011-09-20 | 2011-09-20 | Gear pump with dual side plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250818U true CN202250818U (en) | 2012-05-30 |
Family
ID=46112070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203534445U Expired - Fee Related CN202250818U (en) | 2011-09-20 | 2011-09-20 | Gear pump with dual side plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179230A (en) * | 2015-11-03 | 2015-12-23 | 芜湖环球汽车配件有限公司 | External meshed gear pump |
-
2011
- 2011-09-20 CN CN2011203534445U patent/CN202250818U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179230A (en) * | 2015-11-03 | 2015-12-23 | 芜湖环球汽车配件有限公司 | External meshed gear pump |
| CN105179230B (en) * | 2015-11-03 | 2018-12-07 | 芜湖环球汽车配件有限公司 | A kind of external gear rotary pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |