CN201902326U - Pressure-holding type combined pump - Google Patents
Pressure-holding type combined pump Download PDFInfo
- Publication number
- CN201902326U CN201902326U CN2010206751478U CN201020675147U CN201902326U CN 201902326 U CN201902326 U CN 201902326U CN 2010206751478 U CN2010206751478 U CN 2010206751478U CN 201020675147 U CN201020675147 U CN 201020675147U CN 201902326 U CN201902326 U CN 201902326U
- Authority
- CN
- China
- Prior art keywords
- pump
- pressure
- oil
- type combined
- holding type
- 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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Abstract
The utility model relates to a pressure-holding type combined pump which comprises a pump and an oil-gas separator. An inlet channel of the pump is provided with an overflow valve; an outlet channel of the pump is provided with an oil outlet valve; the oil-gas separator is installed at an outlet of the pump; a check valve is arranged in the inlet channel of the pump; and when the pump stops working, the backflow of oil medium in a pump chamber and the inlet channel is prevented to keep the oil pressure in the pump chamber and the inlet channel. The pressure-holding type combined pump has the advantages of small abrasion, high measurement precision and the like, and is suitable for an oiling machine.
Description
Technical field
The utility model relates to the pump field, particularly about a kind of unipump.The utility model is applicable to the oilling machine unipump.
Background technique
The oilling machine unipump is made up of pump and deaerator.On oilling machine, unipump is the main conveying equipment in its refueling process, because need separate the air that mixes when carrying oil product, unipump is exactly can transferring oil, can realize the equipment of air separation again.As the patent No. is the oilling machine unipump of 03221149.X, comprise deaerator and pump, pump is made up of the pump housing, rotor, pump shaft and driving mechanism, inlet passage at pump is provided with intake screen, the delivery side of pump passage is provided with outlet valve assembly, exhaust floater component and outlet filter screen, deaerator is installed in pump discharge, and air is separated with oil.Its major defect is: when pump quit work, the oily medium meeting leakage reversed flow in the pump chamber made inlet passage and pump chamber become cavity and decompression, and there is the idle running phenomenon in pump when the start, causes the wearing and tearing and the error in dipping of pump.
Summary of the invention
The purpose of this utility model is the problem that exists at prior art, and a kind of protective voltage type unipump that weares and teares little, that measuring accuracy is high is provided.
The technical solution of the utility model comprises pump and deaerator, is provided with relief valve at the inlet passage of pump, and the delivery side of pump passage is provided with outlet valve, and deaerator is installed in pump discharge, mainly is a safety check is set in the inlet passage of pump.
The utility model has the advantages that a safety check is set in the pump housing inlet passage, when pump quits work, prevent oily medium back flow in pump chamber and the inlet passage, keep the oil pressure in pump chamber and the inlet passage, the wearing and tearing when reducing pump startup improve measuring accuracy.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Protective voltage type unipump as shown in Figure 1, comprise pump and deaerator 2, pump is made up of the pump housing 6, pump cover 1, rotor, pump shaft and driving mechanism, inlet passage at pump is provided with relief valve 4, the delivery side of pump passage is provided with outlet valve 3, deaerator 2 is installed in pump discharge, one safety check 5 is set in the inlet passage of pump, this safety check 5 is made up of valve seat, flap, spool, valve seat is fixedly mounted on the pump housing 6, flap is fixedlyed connected with spool, and is sealed and matched mutually with valve seat, prevents that medium flows backwards in inlet passage in the pump chamber.
Claims (1)
1. protective voltage type unipump, comprise pump and deaerator (2), be provided with relief valve (4) at the inlet passage of pump, the delivery side of pump passage is provided with outlet valve (3), deaerator (2) is installed in pump discharge, it is characterized in that being provided with in the inlet passage of pump a safety check (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206751478U CN201902326U (en) | 2010-12-13 | 2010-12-13 | Pressure-holding type combined pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206751478U CN201902326U (en) | 2010-12-13 | 2010-12-13 | Pressure-holding type combined pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902326U true CN201902326U (en) | 2011-07-20 |
Family
ID=44272924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206751478U Expired - Fee Related CN201902326U (en) | 2010-12-13 | 2010-12-13 | Pressure-holding type combined pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902326U (en) |
-
2010
- 2010-12-13 CN CN2010206751478U patent/CN201902326U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20171213 |