JPH0351183U - - Google Patents
Info
- Publication number
- JPH0351183U JPH0351183U JP11198989U JP11198989U JPH0351183U JP H0351183 U JPH0351183 U JP H0351183U JP 11198989 U JP11198989 U JP 11198989U JP 11198989 U JP11198989 U JP 11198989U JP H0351183 U JPH0351183 U JP H0351183U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- shaft
- valve hole
- cam portion
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
Landscapes
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
第１図は本考案によるプランジヤポンプの第１
実施例の横断面図を示す。第２図及び第３図は本
考案の第２実施例を示し、第２図は縦断面図、第
３図は第２図の−断面図である。第４図は従
来技術の横断面図である。
符号の説明、１０……ポンプハウジング、１２
……弁孔、１３……凹部、１７……吸入通路、１
８……吐出通路、２２……ポンプ室、２５……シ
ヤフト、２６……カム部、３０……プランジヤ。
Figure 1 shows the first plunger pump according to the present invention.
FIG. 3 shows a cross-sectional view of an example. 2 and 3 show a second embodiment of the present invention, FIG. 2 being a longitudinal cross-sectional view, and FIG. 3 being a cross-sectional view taken from FIG. 2. FIG. 4 is a cross-sectional view of the prior art. Explanation of symbols, 10... Pump housing, 12
... Valve hole, 13 ... Recess, 17 ... Suction passage, 1
8...Discharge passage, 22...Pump chamber, 25...Shaft, 26...Cam section, 30...Plunger.
Claims (1)
承されたシヤフトと、前記カム部と対応する位置
において前記ポンプハウジングに半径方向に形成
された少なくとも１個の弁孔と、この弁孔に摺動
自在に嵌挿され一端が前記カム部の外周面に当接
された少なくとも１個のプランジヤを備え、前記
シヤフトの回転により前記プランジヤを前記カム
部の外周面にならつて半径方向に往復動させ、こ
れにより前記プランジヤの他端側と前記ポンプハ
ウジングの間に形成されたポンプ室の容積を増減
させて吸入通路から流体を吸入し吐出通路から流
体を吐出するプランジヤポンプにおいて、前記プ
ランジヤの前記他端側が摺動嵌合される前記弁孔
の内面であつて前記シヤフトの回転方向側となる
位置に凹部を設け、この凹部を前記ポンプ室に連
通したことを特徴とするプランジヤポンプ。 a shaft having a cam portion and rotatably supported on the pump housing; at least one valve hole formed in the pump housing in a radial direction at a position corresponding to the cam portion; and a shaft slidable in the valve hole. at least one plunger that is fitted into the shaft and has one end abutted against the outer circumferential surface of the cam portion, and the plunger is reciprocated in a radial direction along the outer circumferential surface of the cam portion by rotation of the shaft; In the plunger pump, the volume of a pump chamber formed between the other end of the plunger and the pump housing is increased or decreased to suck in fluid from a suction passage and discharge fluid from a discharge passage. A plunger pump characterized in that a recess is provided at a position on the inner surface of the valve hole into which the valve hole is slidably fitted and is on the rotational direction side of the shaft, and the recess is communicated with the pump chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11198989U JPH0351183U (en) | 1989-09-25 | 1989-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11198989U JPH0351183U (en) | 1989-09-25 | 1989-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0351183U true JPH0351183U (en) | 1991-05-17 |
Family
ID=31660445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11198989U Pending JPH0351183U (en) | 1989-09-25 | 1989-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351183U (en) |
-
1989
- 1989-09-25 JP JP11198989U patent/JPH0351183U/ja active Pending