CN202040080U - Synchronous hydraulic external gear pump - Google Patents
Synchronous hydraulic external gear pump Download PDFInfo
- Publication number
- CN202040080U CN202040080U CN2011201400200U CN201120140020U CN202040080U CN 202040080 U CN202040080 U CN 202040080U CN 2011201400200 U CN2011201400200 U CN 2011201400200U CN 201120140020 U CN201120140020 U CN 201120140020U CN 202040080 U CN202040080 U CN 202040080U
- Authority
- CN
- China
- Prior art keywords
- pump
- gear
- driven
- external gear
- gear pump
- 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 - Lifetime
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- Rotary Pumps (AREA)
Abstract
The utility model relates to a hydraulic pump, in particular to a synchronous hydraulic external gear pump, which is capable of resolving the problems that a transmission gear of an existing hydraulic pump is large in radial force, the gear top and the pump are easy to be abraded, and the pump is large in leakage, low in capacity and efficiency and the like. The synchronous hydraulic external gear pump comprises a pump casing, a front pressure cover, a rear pressure cover, a main transmission shaft in the pump casing, a driving liquid suction and discharge gear on the main transmission shaft, a driven shaft and a driven liquid suction and discharge gear on the driven shaft, and synchronous gears are mounted at the rear ends of the main transmission shaft and the driven shaft respectively. The synchronous hydraulic external gear pump is simple in structure, small in size, light in weight, convenient in manufacturing and maintenance, low in cost and reliable in operation.
Description
Technical field
The utility model relates to a kind of liquid pump, specifically is a kind of synchronous outer gearing hydraulic gear pump.
Background technique
Common external gear pump is by the rotation that is meshing with each other in a close-fitting housing of two measure-alike gears, and the inner classes of this housing is like the figure of eight, and two gears are contained in the inside, and the external diameter of gear and both sides and housing closely cooperate.Liquid enters in the middle of two gears from suction port, and is full of this space, along with the rotation of gear is moved along housing, discharges when two teeth mesh at last.For common external gear pump, during work, driving tooth drives driven tooth and rotates, and suction liquid gear is not only played the pressurization of Give liquid, also plays a part transmission of power.Institute is so that gear is subjected to hydraulic coupling and engaging force simultaneously, and especially driven gear is bearing bigger making a concerted effort, and causes driven gear upper bearing (metal) premature failure.Cause at last that output ripple is obvious, discharge capacity is little, limited its application.
Summary of the invention
The utility model is that existing liquid pump driving cog radial force is big in order to solve, easy to wear between tooth top and the pump housing, reveal problems such as big, that volumetric efficiency is low, and provide a kind of synchronous outer gearing hydraulic gear pump.
The technical solution of the utility model is: a kind of synchronous outer gearing hydraulic gear pump, comprise pump case, preceding gland, rear pressing cover, the main drive shaft of pump case inside and on active suction liquid tooth, driven shaft and on driven suction liquid tooth, be separately installed with synchromesh gear in the rear end of main drive shaft rear end and driven shaft.
Compare with existing structure, the utility model has installed a pair of synchromesh gear additional in the rear end of main drive shaft rear end and driven shaft, can share engaging force, the suffered radial force of suction liquid gear is reduced, the life-span that one side improves bearing, reduce the wearing and tearing between the tooth top and the pump housing on the other hand, reduce to reveal, improve the volumetric efficiency of pump.Common relatively external gear pump, external gear pump has advantages such as uneven radial force is little, volumetric efficiency is high, long working life synchronously, has improved the working pressure of gear pump simultaneously.
The utlity model has following beneficial effect: simple in structure, size is little, in light weight, make easy to maintenance, cheap, reliable operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: the pump front cover of 1-main drive shaft, 2-driving shaft, the pump front cover of 3-driven shaft, 4-round nut, 5-lock washer, 6
-Deep groove ball bearing, 7-driven shaft, 8-oil sealing, 9-pump case, 10-sealing cover, 11-pump case, 12-seal arrangement, 13-pump case, 14-be suction liquid tooth, the driven suction liquid of 15-tooth, 16-gland, 17-synchromesh gear, 18-synchromesh gear, 19-rear pressing cover initiatively.
Embodiment,
As schematically shown in Figure 1, a kind of synchronous outer gearing hydraulic gear pump, comprise pump case, front cover, rear pressing cover, the main drive shaft 1 of pump case inside and on active suction liquid tooth 14, driven shaft 7 and on driven suction liquid tooth 15, the outer black box of transmission shaft, be separately installed with synchromesh gear 17,18 in the rear end of main drive shaft 1 rear end and driven shaft 7.
Black box is a movable sealing structure, comprises seal arrangement 12 and pressure sealing cover 10 thereon, in the seal arrangement 12 seal ring is arranged.
Claims (2)
1. synchronous outer gearing hydraulic gear pump, comprise pump case, front cover, rear pressing cover, the main drive shaft of pump case inside (1) and on active suction liquid tooth (14), driven shaft (7) and on driven suction liquid tooth (15), the outer black box of transmission shaft, it is characterized in that: be separately installed with synchromesh gear (17,18) in the rear end of main drive shaft (1) rear end and driven shaft (7).
2. synchronous outer gearing hydraulic gear pump according to claim 1, it is characterized in that: black box is a movable sealing structure, comprises seal arrangement (12) and pressure sealing cover (10) thereon, seal arrangement has seal ring in (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201400200U CN202040080U (en) | 2011-05-05 | 2011-05-05 | Synchronous hydraulic external gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201400200U CN202040080U (en) | 2011-05-05 | 2011-05-05 | Synchronous hydraulic external gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202040080U true CN202040080U (en) | 2011-11-16 |
Family
ID=44967526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201400200U Expired - Lifetime CN202040080U (en) | 2011-05-05 | 2011-05-05 | Synchronous hydraulic external gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202040080U (en) |
-
2011
- 2011-05-05 CN CN2011201400200U patent/CN202040080U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
|
| CX01 | Expiry of patent term |