JPH0462383U

JPH0462383U -

Info

Publication number: JPH0462383U
Application number: JP10453890U
Authority: JP
Priority date: 1990-10-05
Filing date: 1990-10-05
Publication date: 1992-05-28

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例を示す断面図、第
２図は第１図の−線に沿う断面図、第３図は
第１図の−線に沿う断面図、第４図は第１図
の−線に沿う断面図、第５図は第１図の−
線に沿う断面図である。１……ドライブギア、１ａ……歯、２……ドリ
ブンギア、２ａ……歯、３……ケーシング、３ｃ
……内周面、３ｄ，３ｅ……内側面、３ｆ，３ｇ
……第１の斜面部、３ｈ……第２の斜面部、Ｐ_１……吸入ポート、Ｐ_２……吐出ポート、Ａ……圧
送領域。 Fig. 1 is a sectional view showing the first embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 1, and Fig. 4 is a sectional view taken along the - line in Fig. 1. A sectional view taken along the - line in Fig. 1, and Fig. 5 is a sectional view taken along the - line in Fig. 1.
It is a sectional view along a line. 1... Drive gear, 1a... Teeth, 2... Driven gear, 2a... Teeth, 3... Casing, 3c
...Inner peripheral surface, 3d, 3e...Inner surface, 3f, 3g
...First slope part, 3h...Second slope part, P ₁ ... Suction port, P ₂ ... Discharge port, A ... Pressure feeding area.

Claims

[Claims for Utility Model Registration] 1. In a gear pump that pumps liquid from a suction port to a discharge port by the rotation of two gears that mesh in a casing: A gear pump characterized in that a first slope portion is formed on an inner surface of the casing facing the inner surface of the casing, the first slope portion gradually approaching the side portion of the teeth of the gear from the suction port toward the discharge port. 2. On the inner circumferential surface of the casing located in the liquid pumping area and facing the tip of the tooth of the gear, gradually contacting the tip of the gear tooth from the suction port toward the discharge port. second approaching
2. The gear pump according to claim 1, further comprising a sloped portion.