JPS61187985U

JPS61187985U -

Info

Publication number: JPS61187985U
Application number: JP7406285U
Authority: JP
Priority date: 1985-05-17
Filing date: 1985-05-17
Publication date: 1986-11-22

Description

[Brief explanation of the drawing]

第１図はこの考案の１実施例であるギヤポンプ
の、フロントカバー側軸受だけが収められたケー
シングをリヤカバー側から見た外形背面図、第２
図はそのリヤカバーをケーシングとの接合面側か
ら見た外形正面図、第３図はケーシングとの接合
面側から見たリヤカバーの還流溝の配設状態を説
明する図、第４図は別な実施例における還流溝と
内部流路との接続状態を示す図、第５図は従来の
ポリマー送液用ギヤポンプの断面図、第６図はそ
のリヤカバーおよび駆動軸、被動軸の各軸受を示
した斜視図である。１……駆動軸、２……駆動ポンプギヤ、３……
被動軸、４……被動ポンプギヤ、５……ケーシン
グ、６，７……軸受、８……リヤカバー、９……
フロントカバー、１５，１５′……導入溝、２６
，２６′……還流溝。 Figure 1 is an external rear view of a gear pump that is one embodiment of this invention, in which only the front cover side bearing is housed, as seen from the rear cover side.
The figure is a front view of the rear cover as seen from the side where it joins with the casing, Figure 3 is a diagram explaining the arrangement of the circulation grooves of the rear cover as seen from the side where it joins with the casing, and Figure 4 is a different view. A diagram showing the state of connection between the return groove and the internal flow path in the example, Figure 5 is a cross-sectional view of a conventional gear pump for pumping polymer liquid, and Figure 6 shows its rear cover and each bearing of the drive shaft and driven shaft. FIG. 1... Drive shaft, 2... Drive pump gear, 3...
Driven shaft, 4... Driven pump gear, 5... Casing, 6, 7... Bearing, 8... Rear cover, 9...
Front cover, 15, 15'...Introduction groove, 26
, 26'...reflux groove.

Claims

[Scope of utility model registration request]

A drive pump gear, a pair of bearings that support the drive shaft of the drive pump gear, a driven pump gear that meshes with the drive pump gear, a pair of bearings that support the driven shaft of the driven pump gear, a casing that accommodates these, and front and rear openings of the casing. and a front cover having a through hole for the drive shaft and having a sealing part, and an introduction groove is formed in the inner end surface of each bearing and in the bearing hole, and each of these introduction holes is formed. A portion of the liquid to be sent is introduced into each of the bearings as a lubricating liquid from the discharge port side of the casing, and each of the bearing holes is provided in each joint surface of the rear cover and the front cover with the casing. In the gear pump, a reflux groove is formed which is flow-path-connected to an introduction groove of the casing, and the lubricated liquid is refluxed to the suction port side of the casing through each of the reflux grooves. of,
A pair of holes are formed in a V-shape in a tangential direction to the swirling flow of the outflowing liquid generated at the outer end of the bearing hole, and with the sides where the swirling flows approach each other as starting points. gear pump.