CN202326210U - Gear pump - Google Patents
Gear pump Download PDFInfo
- Publication number
- CN202326210U CN202326210U CN2011204241333U CN201120424133U CN202326210U CN 202326210 U CN202326210 U CN 202326210U CN 2011204241333 U CN2011204241333 U CN 2011204241333U CN 201120424133 U CN201120424133 U CN 201120424133U CN 202326210 U CN202326210 U CN 202326210U
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- Prior art keywords
- gear
- circumference
- radius
- pump
- utility
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- 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.)
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Abstract
The utility model discloses a gear pump, comprising a pump body, a driving gear, a driven gear, a front pump cover and a back pump cover, wherein two gear holes are arranged in the pump body, the pump body is divided into a suction cavity and a discharge cavity by meshing between the driven gear and the driving gear, the end surface of each gear hole is formed by smoothly connecting a circumference I and a circumference II, the radius of the circumference I is equal to the radiuses of the driving gear and the driven gear, the radius of the circumference II is larger than the radius of the circumference I, and the radius of the circumference II is 0.1mm larger than the radius of the circumference I. Therefore, the lengths of the contact circumferences of the gears and the gear holes are reduced so that the noise and the abrasion degree of the gear when the gear pump operates are greatly reduced, and the service life of the gear pump is prolonged.
Description
Technical field
The utility model relates to a kind of gear pump.
Background technique
Gear pump is that a driving gear and driven gear that cooperates with gear hole is housed in the gear hole in the pump housing, relies on being meshing with each other of two gears, is divided into two independent parts, i.e. suction chamber and discharge side to the whole active chamber of gear hole.Gear pump driving gear in the running drives the driven gear rotation;, gear just forms parital vacuum when throwing off from being engaged at suction chamber; Liquid is inhaled into; The liquid that is inhaled into is full of each tooth paddy of gear and takes discharge side to, and liquid was extruded when gear got into engagement, forms highly pressurised liquid and is squeezed in the pipeline through the gear pump exhaust port.
Like Fig. 1, existing gear pump generally includes the pump housing 11, driving gear 12, driven gear 13, front pump cover 14 and rear pump cover 15.Like Fig. 2, the gear hole 21 on the pump housing all is to match with driving gear 12 and driven gear 13, promptly; The end face of gear hole 21 is the part circumference identical with tooth radius, and gear is longer with the circumferential length that gear hole 21 is contacted, therefore; During gear pump work, gear has just increased the friction area between gear and the gear hole under high speed rotating, increased noise; And the gear easy abrasion, thereby shortened working life of gear pump.
The model utility content
For solving the problems of the technologies described above, the utility model provides a kind of gear pump, can effectively reduce the circumferential length that gear contacts with gear hole, reduce noise greatly and reduce gear wear, thus the working life of having improved gear pump.
For achieving the above object, the technological scheme of the utility model is following: a kind of gear pump comprises the pump housing; Driving gear, driven gear, front pump cover and rear pump cover; In the pump housing, be provided with two gear holes; Through driving gear and driven gear engagement, the pump housing is divided into suction chamber and discharge side, the end face of said gear hole is made up of circumference one and circumference two smooth connections; The radius of said circumference one equates that with the radius of said driving gear and driven gear the radius of said circumference two is greater than the radius of said circumference one.
Further, in order to reduce the circumferential length that gear contacts with gear hole, the big 0.1mm of radius of the said circumference one of the radius ratio of said circumference two.
Pass through technique scheme; The utility model constitutes through gear hole being improved to by two circumference smooth connections; And the radius of the radius ratio circumference one of circumference two is big slightly; Effectively reduce the circumferential length that gear contacts with gear hole, thereby greatly reduced noise and reduced gear wear, improved the working life of gear pump.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sectional view gear pump of the disclosed a kind of gear pump of existing technology;
Fig. 2 is the structural representation of a kind of pump housing that existing technology provided;
Fig. 3 is the structural representation of the disclosed a kind of pump housing of embodiment of the utility model.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of gear pump, mainly comprises the pump housing, driving gear, driven gear, front pump cover and rear pump cover.As shown in Figure 3, be provided with two gear holes in the pump housing, the engagement through said driving gear 32 and said driven gear 33 is divided into suction chamber 36 and discharge side 37 with the said pump housing; The end face of said gear hole is made up of circumference 1 and circumference 2 35 smooth connections; The radius of said circumference 1 equates with the radius of said driving gear 32 and driven gear 33; The big 0.1mm of radius of the said circumference 1 of the radius ratio of said circumference 2 35 makes and leaves an intersegmental crack 31 between gear and the circumference two.
Gear hole in the utility model is made up of two circumference smooth connections, and the radius of the radius ratio circumference one of circumference two is big slightly, has reduced the contact length of gear and gear hole significantly; When driving gear and driven gear engagement running; Leave an intersegmental crack between gear and the circumference two, so gear and circumference two do not have friction, thereby greatly reduce the wear intensity of gear; Reduce noise, improved the working life of gear pump.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (2)
1. a gear pump comprises the pump housing, driving gear; Driven gear, front pump cover and rear pump cover, the said pump housing are provided with two gear holes; Through the engagement of said driving gear and said driven gear, the said pump housing is divided into suction chamber and discharge side, it is characterized in that: the end face of said gear hole is made up of circumference one and circumference two smooth connections; The radius of said circumference one equates that with the radius of said driving gear and driven gear the radius of said circumference two is greater than the radius of said circumference one.
2. a kind of gear pump according to claim 1 is characterized in that, the big 0.1mm of radius of the said circumference one of the radius ratio of said circumference two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204241333U CN202326210U (en) | 2011-11-01 | 2011-11-01 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204241333U CN202326210U (en) | 2011-11-01 | 2011-11-01 | Gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326210U true CN202326210U (en) | 2012-07-11 |
Family
ID=46438192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204241333U Expired - Fee Related CN202326210U (en) | 2011-11-01 | 2011-11-01 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326210U (en) |
-
2011
- 2011-11-01 CN CN2011204241333U patent/CN202326210U/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: 20120711 Termination date: 20131101 |