CN200964944Y - Gear pump - Google Patents
Gear pump Download PDFInfo
- Publication number
- CN200964944Y CN200964944Y CN 200620127974 CN200620127974U CN200964944Y CN 200964944 Y CN200964944 Y CN 200964944Y CN 200620127974 CN200620127974 CN 200620127974 CN 200620127974 U CN200620127974 U CN 200620127974U CN 200964944 Y CN200964944 Y CN 200964944Y
- Authority
- CN
- China
- Prior art keywords
- pump
- gear
- driven gear
- safety valve
- valve
- 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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- Safety Valves (AREA)
Abstract
The utility model discloses a gear pump, two shaft sleeves of a front pump, a drive gear, a driven gear which is arranged in an internal chamber at the front part of the pump body, a rear pump single side plate, a rear pump drive gear, a driven gear which is arranged in the internal chamber at the rear of the pump body, an installation front and rear cover. The internal chamber at the front part of the pump body is communicated with an oil outlet of the front pump and a front pump safety valve; the rear pump safety valve is arranged in the rear cover; the front pump safety valve is a cone valve; the rear pump safety valve is a ball valve. The utility model front and rear pump co-use a pump body; the front and rear pump safety valve are arranged on the same pump. Therefore, the pump has dense structure, rich function, low manufacture cost, and the manufacture precision is largely improved.
Description
Technical field
The utility model belongs to the pump class, especially relates to a kind of duplex gear pump.
Background technique
Gear pump must be by safety valve to the cylinder transferring oil time, and the effect of safety valve is the pressure of controlling plumbing fixtures system, and when oil pressure surpassed specified value, safety valve was just opened, and makes fluid circulation voluntarily in system, and oil pressure no longer rises, to guarantee the device security running.Present known gear pump generally is not to be with safety valve, and for duplex pump, forward and backward pump all is with safety valve more rare.Gear pump is connected use with the safety valve split, has not only taken system space, has also increased system cost.
Summary of the invention
The purpose of this utility model provide a kind of can the reduction system space, can reduce system cost again, and can guarantee the duplex gear pump technological scheme of assembly precision.
The purpose of this utility model is achieved in that
The utility model comprises the pump housing, front pump driving gear, front pump driven gear, rear pump driven gear, rear pump driving gear, safety valve and front and rear covers;
The described pump housing has former and later two inner chambers that communicate, and front pump driven gear is coaxial with rear pump driven gear;
Front pump two axle sleeves, driving gear, driven gears are installed in the anterior inner chamber of the pump housing, and the one-sided plate of back pump, rear pump driven gear, driven gear are installed in pump housing rear portion inner chamber, and forward and backward lid is installed; The anterior inner chamber of the pump housing communicates with front pump oil outlet and preceding pump relief valve; Back pump relief valve places in the bonnet; Preceding pump relief valve is a cone valve, and back pump relief valve is a ball valve.
Beneficial effect
Because pump itself has safety valve, but protective system, and safety valve is installed by the system that saves.Secondly, because forward and backward pump is installed on the pump housing, therefore, the forward and backward inner chamber of the pump housing just needs higher coaxality, so installation precision has improved; Owing to saved preceding pump postoperculum, intermediate, back pump protecgulum, therefore reduced cost again simultaneously.
Description of drawings
Fig. 1 is a structure diagram of the present utility model;
Fig. 2 is a preceding pump relief valve position view in the utility model;
Fig. 3 is the utility model rear cover structure sketch.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model:
As shown in the figure: the pump housing 1 is divided into former and later two chambeies, two axle sleeves of front pump, front pump driving gear 2, front pump driven gear 3 are installed in the pump housing 1 anterior inner chamber, the one-sided plate of back pump, rear pump driven gear 6, rear pump driving gear 4 are installed in the pump housing 1 rear portion inner chamber, and protecgulum 5 and bonnet 7 are installed then; The pump housing 1 anterior inner chamber communicates with front pump oil outlet and preceding pump relief valve 8, when pressure surpasses 8 set pressures of preceding pump relief valve, and unloading.Back pump relief valve 9 places in the bonnet 7, when back pumping pressure surpasses back pump relief valve 9 setting pressures, and unloading.Preceding pump relief valve 8 is a cone valve, and back pump relief valve 9 is a ball valve.
The shared pump housing of the forward and backward pump of the utility model, forward and backward pump relief valve is on a pump.Therefore, this pump structure compactness, feature richness, it is low to manufacture cost, and the big raising of accuracy of manufacturing.
Claims (2)
1, a kind of gear pump comprises the pump housing, front pump driving gear, front pump driven gear, rear pump driven gear, rear pump driving gear, safety valve and front and rear covers composition; It is characterized in that:
The described pump housing has former and later two inner chambers that communicate, and front pump driven gear is coaxial with rear pump driven gear;
Front pump driving gear, front pump driven gear are installed in the anterior inner chamber of the pump housing, and rear pump driven gear, rear pump driving gear are installed in pump housing rear portion inner chamber, and the anterior inner chamber of the pump housing communicates with front pump oil outlet and preceding pump relief valve; Back pump relief valve places in the bonnet.
2, gear pump according to claim 1 is characterized in that: preceding pump relief valve is a cone valve, and back pump relief valve is a ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620127974 CN200964944Y (en) | 2006-10-24 | 2006-10-24 | Gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620127974 CN200964944Y (en) | 2006-10-24 | 2006-10-24 | Gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200964944Y true CN200964944Y (en) | 2007-10-24 |
Family
ID=38868959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620127974 Expired - Fee Related CN200964944Y (en) | 2006-10-24 | 2006-10-24 | Gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200964944Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470939A (en) * | 2013-09-16 | 2013-12-25 | 安徽华菱汽车有限公司 | Lubricating oil system and gear type engine oil pump thereof |
-
2006
- 2006-10-24 CN CN 200620127974 patent/CN200964944Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470939A (en) * | 2013-09-16 | 2013-12-25 | 安徽华菱汽车有限公司 | Lubricating oil system and gear type engine oil pump thereof |
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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: 20071024 Termination date: 20121024 |