JPH0335273U - - Google Patents
Info
- Publication number
- JPH0335273U JPH0335273U JP9610289U JP9610289U JPH0335273U JP H0335273 U JPH0335273 U JP H0335273U JP 9610289 U JP9610289 U JP 9610289U JP 9610289 U JP9610289 U JP 9610289U JP H0335273 U JPH0335273 U JP H0335273U
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- sleeve
- cylinder pipe
- wear
- valve body
- 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
- 239000010410 layer Substances 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
Description
第１図は本考案に係る往復動型ピストンポンプ
の一実施例の要部である耐摩耗層を拡大して示す
断面図、第２図は往復動型ピストンポンプの構造
例を示す断面図、第３図は他の往復動型ピストン
ポンプの構造例を示す断面図である。
１……吸込口、２……吐出口、３……シリンダ
パイプ、４……ピストンロツド、５……ピストン
、６……弁体、７……通孔、８……止体、９……
スリーブ、１０……パツキン、１１ａ，１１ｂ，
１１ｃ……耐摩耗層、１２ａ，１２ｂ，１２ｃ…
…硬質クロムめつき層、１３，１３ａ，１３ｂ，
１３ｃ……酸化クロムコーテイング層、１４……
針孔や亀裂。
FIG. 1 is an enlarged cross-sectional view showing a wear-resistant layer that is a main part of an embodiment of a reciprocating piston pump according to the present invention, and FIG. 2 is a cross-sectional view showing an example of the structure of a reciprocating piston pump. FIG. 3 is a sectional view showing a structural example of another reciprocating piston pump. 1...Suction port, 2...Discharge port, 3...Cylinder pipe, 4...Piston rod, 5...Piston, 6...Valve body, 7...Through hole, 8...Stop body, 9...
Sleeve, 10...Putskin, 11a, 11b,
11c...wear-resistant layer, 12a, 12b, 12c...
...Hard chrome plating layer, 13, 13a, 13b,
13c...Chromium oxide coating layer, 14...
Needle holes and cracks.
Claims (1)
プと、上記シリンダパイプ内を往復動するピスト
ンロツドとを備え、上記ピストンロツドの先端部
に往復動自在に嵌挿されたピストンをピストンロ
ツドとともに往復動させて加圧流体の送出を行な
う往復動型ピストンポンプにおいて、上記シリン
ダパイプ内表面およびピストンロツド外表面の少
なくとも一方の表面に耐摩耗層を形成し、この耐
摩耗層は、母材表面に形成した硬質クロムめつき
層と、この硬質クロムめつき層に被着形成した酸
化クロムコーテイング層とから構成したことを特
徴とする往復動型ピストンポンプ。 ２ 吸込口および吐出口を有するシリンダパイプ
内を往復動するピストンロツドと、このピストン
ロツドの先端に設けた弁体と、この弁体より間隔
をおいてピストンロツドに配設され、通孔を有す
る止体と、上記弁体と止体との距離より小なる長
さを有し、上記弁体と止体との間のピストンロツ
ドに遊嵌されたスリーブと、上記シリンダパイプ
内壁に固定され、上記スリーブを気水密にかつ摺
動自在に保持するパツキンとを備えた往復動型ピ
ストンポンプにおいて、上記スリーブ外表面に耐
摩耗層を形成し、この耐摩耗層は、スリーブ母材
表面に形成した硬質クロムめつき層と、この硬質
クロムめつき層に被着形成した酸化クロムコーテ
イング層とから構成したことを特徴とする往復動
型ピストンポンプ。[Scope of Claim for Utility Model Registration] 1. A cylinder pipe connected to a suction port and a discharge port, and a piston rod that reciprocates within the cylinder pipe, and a piston that is fitted into the tip of the piston rod so as to be able to reciprocate. In a reciprocating piston pump that sends pressurized fluid by reciprocating with the piston rod, a wear-resistant layer is formed on at least one of the inner surface of the cylinder pipe and the outer surface of the piston rod, and this wear-resistant layer is formed on the base material. A reciprocating piston pump comprising a hard chrome plating layer formed on the surface and a chromium oxide coating layer deposited on the hard chrome plating layer. 2. A piston rod that reciprocates within a cylinder pipe having a suction port and a discharge port, a valve body provided at the tip of the piston rod, and a stop body provided on the piston rod at a distance from the valve body and having a through hole. , a sleeve having a length smaller than the distance between the valve body and the stop body, and loosely fitted on the piston rod between the valve body and the stop body, and a sleeve fixed to the inner wall of the cylinder pipe, the sleeve being In a reciprocating piston pump equipped with a packing that holds the sleeve watertightly and slidably, a wear-resistant layer is formed on the outer surface of the sleeve, and this wear-resistant layer is formed by hard chrome plating formed on the surface of the sleeve base material. 1. A reciprocating piston pump comprising a chromium oxide coating layer formed on the hard chromium plating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9610289U JPH0335273U (en) | 1989-08-18 | 1989-08-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9610289U JPH0335273U (en) | 1989-08-18 | 1989-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0335273U true JPH0335273U (en) | 1991-04-05 |
Family
ID=31645326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9610289U Pending JPH0335273U (en) | 1989-08-18 | 1989-08-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0335273U (en) |
-
1989
- 1989-08-18 JP JP9610289U patent/JPH0335273U/ja active Pending