JPS6123485U

JPS6123485U - Gear pump with metering circuit

Info

Publication number: JPS6123485U
Application number: JP10767584U
Authority: JP
Inventors: 邦彦大山
Original assignee: 東京部品工業株式会社
Priority date: 1984-07-18
Filing date: 1984-07-18
Publication date: 1986-02-12

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は歯車ポンプの回路図を含めた断面説明図、第２
図は弁の断面図、第３図は弁体の正面図、第４図は第３
図のＡ−Ａ断面図、第５図は他の実施例における弁体の
断面図である。１・・・ケーシング、２，３，４・・・歯車、５，ｅ・
・・吸入口、７，８・・・吐出口、９，１０・・・吸入
管、１１，１２・・・吐出管、１３・・・弁、１４・・
・合寄管、１５・・・油タンク、１６・・・弁箱、−１
７・・・圧力導入部、１８・・・油入口部、１９・・・
油出口部、２０・・・油戻り部、２１・・・弁体、２２
・・・蓋、２３・・・コイルスプリング、２８・・・通
油溝部。Figure 1 is a cross-sectional explanatory diagram including the gear pump circuit diagram, Figure 2
The figure is a cross-sectional view of the valve, Figure 3 is a front view of the valve body, and Figure 4 is a sectional view of the valve body.
A cross-sectional view taken along the line A-A in the figure, and FIG. 5 are cross-sectional views of a valve body in another embodiment. 1... Casing, 2, 3, 4... Gear, 5, e.
...Suction port, 7,8...Discharge port, 9,10...Suction pipe, 11,12...Discharge pipe, 13...Valve, 14...
・Joint pipe, 15...Oil tank, 16...Valve box, -1
7...Pressure introduction part, 18...Oil inlet part, 19...
Oil outlet part, 20... Oil return part, 21... Valve body, 22
... Lid, 23 ... Coil spring, 28 ... Oil passage groove.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

同一のケーシング内で相互に噛合う同数の歯数を有する
ｎ個の歯車を外接噛合させて形成したｎ−１個の歯車′
ポンプと、該歯車ポンプのｎ−１個の吐出口に接続する
ｎ−１個の吐出管の内ｎ−２個の吐出管を接続するｎ−
２個の油入口部と該油入口部と対をなして油タンクヘ連
通する油戻り部と油入口部と対向する位置に形成した油
出口部を設けた筒状の弁箱と該弁箱内を軸方向に摺動し
ｎ一２個の調量溝部と対向側に出口溝部を形成してなる
通油溝部を設けると共に軸心に沿って有底の導圧孔を設
けてなる弁体と弁箱の一方の開口端に設け前記ｎ−２個
の吐出管以外の１個の吐出管と分枝して接続し弁体の導
圧孔に潤滑油を導みする圧力導入部と弁箱の他方の開口
に結接し内側底面と弁体端面内にほぼ自由長さのゴイル
スプリングを挾接する蓋部を有し導圧孔内の圧力上昇に
より１個ずつ油入口部と油戻り部を調量溝部で連通しつ
つ通過面積を増加すると共に油出口部の通過面積を漸減
しながら油入口部と油戻り部を連通し、同時に油出口部
を寒く弁１３とを設けてなることを特徴とする調量回路
を設けた歯車ポンプ。n-1 gears formed by externally meshing n gears having the same number of mutually meshing teeth in the same casing
n- connecting the pump and n-2 discharge pipes among the n-1 discharge pipes connected to the n-1 discharge ports of the gear pump;
A cylindrical valve box having two oil inlets, an oil return part that forms a pair with the oil inlets and communicates with the oil tank, and an oil outlet formed at a position opposite to the oil inlets, and the inside of the valve box. A valve body that slides in the axial direction and has an oil passage groove formed by forming two metering grooves and an outlet groove on the opposite side, and a bottomed pressure guiding hole along the axis. A pressure introduction part that is provided at one open end of the valve box and is branched and connected to one discharge pipe other than the n-2 discharge pipes to guide lubricating oil to the pressure guiding hole of the valve body, and the valve box. It has a lid part that connects to the other opening of the valve body and clamps a Goyle spring of almost free length in the inner bottom surface and the end face of the valve body, and adjusts the oil inlet part and oil return part one by one by increasing the pressure in the pressure guiding hole. The oil inlet part and the oil return part are connected to each other by increasing the passage area while communicating with each other through the oil volume groove part, while gradually decreasing the passage area of the oil outlet part, and at the same time, a valve 13 is provided to cool the oil outlet part. A gear pump equipped with a metering circuit.