CN2453162Y - Cam rotor tpye vane pump - Google Patents
Cam rotor tpye vane pump Download PDFInfo
- Publication number
- CN2453162Y CN2453162Y CN 00245048 CN00245048U CN2453162Y CN 2453162 Y CN2453162 Y CN 2453162Y CN 00245048 CN00245048 CN 00245048 CN 00245048 U CN00245048 U CN 00245048U CN 2453162 Y CN2453162 Y CN 2453162Y
- Authority
- CN
- China
- Prior art keywords
- blade
- pump case
- vane
- pump
- cam rotor
- 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 cam rotor type vane pump, which is provided with a pump casing and a cam rotor sheathed in the pump casing, wherein, both ends of the pump casing are respectively provided with a left end cover and a right end cover. A rotary shaft of the cam rotor is supported by the left end cover and the right end cover, and the pump casing is provided with a liquid inlet and a liquid outlet which are communicated with the inner cavity of the pump casing. The inner wall of the pump casing is provided with a vane sliding slot, and the inner of the vane sliding slot is provided with a vane. The front end of the vane extends out of the vane sliding slot and is in contact with the surface phase of the cam rotor, and the inner of the sliding slot is provided with a spring. The elastic force of the spring makes the vane point to the front end of the vane. The utility model is characterized in that the inner wall surfaces of the left and the right end covers are provided with rubber layers.
Description
The utility model relates to a kind of pump, especially a kind of cam rotor vane pump.
Existing cam rotor vane pump (as No. 93215919.2 disclosed cam rotor vane pumps of Chinese utility model patent) mainly is made of pump case and the cam follower that is placed in the pump case; two ends at pump case have end cap; the rotating shaft of cam follower is then supported by end cap; pump case is provided with fluid inlet and fluid output; be provided with blade in the blade slide in pump case; (can also assist pushing tow with pressure oil usually) under the pushing tow of spring, keep in touch on the front end of blade and the surface of cam follower.When cam follower rotates, liquid can be sucked pump case by fluid inlet, extrude pump case by fluid output again.In existing pump rotor blades pump, the quantity of blade can be one, two or more, when a blade was set, fluid inlet and outlet were for a pair of, when two blades were set, fluid inlet and outlet then were two pairs, and the like.Because existing cam follower, pump case and end cap are made by rigid material, when Design and Machining, it between cam follower two ends and the end cap Spielpassung, make the hyperbaric chamber that forms between cam follower and the pump case and low-pressure cavity produce certain leakage rate, cause the volumetric efficiency of pump low, import degree of vacuum is little, it is little to inhale journey.In addition, also be Spielpassung between the projecting surface of cam follower and the pump case inwall, thereby also exist leakage problem.Therefore, above-mentioned existing product exists defective.
The purpose of this utility model is that the end cover structure to above-mentioned existing product improves, and a kind of cam rotor vane pump that can allow cam follower and end cap fit tightly is provided.
Cam rotor vane pump of the present utility model has pump case and is placed on the interior cam follower of pump case, the two ends of pump case have left end cap and right end cap respectively, the rotating shaft of cam follower is by a left side, the right end cap supporting, pump case is provided with fluid inlet and the fluid output that communicates with the pump case inner chamber, the pump case inwall is provided with blade slide, blade is housed in blade slide, the front end of blade stretches out blade slide and contacts with the surface of cam follower, in blade slide, be provided with the spring that blade is imposed the elastic force of pointing to the blade front end, it is characterized in that on a left side, the inner wall surface of right end cap is provided with rubber layer.In the utility model, because the inner wall surface of left and right end cap all has rubber layer, and rubber layer has elasticity preferably, and when designing and producing, just can allow has certain magnitude of interference between the two ends of cam follower and the end cap.During the cam follower rotation, blade is (similar with existing product, as also can to add the high-pressure medium that blade is imposed active force) under the effect of spring, and its front end is close to the cam follower surface and is made slide relative.Under the surface of contact of blade and cam follower and pump case, end cap is separated, form hyperbaric chamber and low-pressure cavity in the pump case, its principle and existing product are identical.Because the surface of contact of cam follower and end cap is an interference fit, thereby can reduce the leakage rate that hyperbaric chamber leaks to low-pressure cavity greatly, improve the volumetric efficiency of pump, and increase the degree of vacuum of import, make the suction Cheng Zenggao of pump.In the utility model, can also set up rubber layer in the inner wall surface of pump case.Like this, also can allow has certain magnitude of interference between the inwall of the projecting surface of cam follower and pump case, further to reduce the leakage of hyperbaric chamber to low-pressure cavity.Blade quantity in the utility model can be one, two or more, when a blade was set, fluid inlet and outlet were for a pair of, when two blades were set, fluid inlet and outlet then were two pairs, and the like, this point is identical with existing product.
Therefore, compared with the aforementioned existing similar products, cam rotor vane pump of the present utility model has journey height, the characteristics that volumetric efficiency is high of inhaling.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Fig. 1 is the structural representation of embodiment's cam rotating vane pump.
Fig. 2 is the A-A sectional view.
As Fig. 1, shown in 2, cam rotor vane pump in the present embodiment has pump case 1 and is placed on the interior cam follower 2 of pump case, the two ends of pump case 1 have left end cap 3 and right end cap 4 respectively, the rotating shaft 5 of cam follower is by a left side, right end cap 3,4 supportings, pump case 1 is provided with fluid inlet 6 and the fluid output 7 that communicates with the pump case inner chamber, the inwall of pump case 1 is provided with the blade slide 8 that is positioned at the cam follower both sides, blade 9 is housed in blade slide 8, the front end of blade 9 stretches out blade slide 8 and contacts with the surface of cam follower 2, in blade slide 8, be provided with the spring 10 that blade 9 is imposed the elastic force of pointing to the blade front end, it is characterized in that on a left side, right end cap 3,4 inner wall surface is provided with rubber layer 11,12.In addition, in the present embodiment also the inner wall surface at pump case 1 be provided with rubber layer 13.Blade 9 in the present embodiment is two, and is corresponding with it, and fluid inlet 6 and fluid output 7 also are provided with two pairs.The working principle of vane pump and working procedure and aforementioned existing product are identical in the present embodiment, repeat no more herein.In the working procedure of pump, because the setting of rubber layer 11,12,13 can reduce the leakage rate of pump case inner high voltage chamber to low-pressure cavity effectively.
Claims (2)
1, a kind of cam rotor vane pump, have pump case and be placed on the interior cam follower of pump case, the two ends of pump case have left end cap and right end cap respectively, the rotating shaft of cam follower is by a left side, the right end cap supporting, pump case is provided with fluid inlet and the fluid output that communicates with the pump case inner chamber, the pump case inwall is provided with blade slide, blade is housed in blade slide, the front end of blade stretches out blade slide and contacts with the surface of cam follower, in blade slide, be provided with the spring that blade is imposed the elastic force of pointing to the blade front end, it is characterized in that on a left side, the inner wall surface of right end cap is provided with rubber layer.
2, cam rotor vane pump as claimed in claim 1 is characterized in that being provided with rubber layer in the inner wall surface of pump case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00245048 CN2453162Y (en) | 2000-11-30 | 2000-11-30 | Cam rotor tpye vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00245048 CN2453162Y (en) | 2000-11-30 | 2000-11-30 | Cam rotor tpye vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453162Y true CN2453162Y (en) | 2001-10-10 |
Family
ID=33604608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00245048 Expired - Fee Related CN2453162Y (en) | 2000-11-30 | 2000-11-30 | Cam rotor tpye vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453162Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047140A (en) * | 2012-12-09 | 2013-04-17 | 马燕翔 | Sliding vane pump and compressor with similar structure |
| CN111765077A (en) * | 2020-07-20 | 2020-10-13 | 海南蓄能发电有限公司 | Vane pump |
| CN114033670A (en) * | 2021-11-30 | 2022-02-11 | 河北佛斯特液压技术股份有限公司 | Self-driven motor pump |
-
2000
- 2000-11-30 CN CN 00245048 patent/CN2453162Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047140A (en) * | 2012-12-09 | 2013-04-17 | 马燕翔 | Sliding vane pump and compressor with similar structure |
| CN111765077A (en) * | 2020-07-20 | 2020-10-13 | 海南蓄能发电有限公司 | Vane pump |
| CN114033670A (en) * | 2021-11-30 | 2022-02-11 | 河北佛斯特液压技术股份有限公司 | Self-driven motor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |