JPH0321591U

JPH0321591U -

Info

Publication number: JPH0321591U
Application number: JP8116589U
Authority: JP
Priority date: 1989-07-12
Filing date: 1989-07-12
Publication date: 1991-03-04
Anticipated expiration: 2004-07-12
Also published as: JPH0754635Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す自吸式ポン
プの第２図−線断面図、第２図は側面図、第
３図は第１図−線断面図、第４図は吐出側流
れのモデル図、第５図は本考案の第２実施例を示
す自吸式ポンプの第６図−線断面図、第６図
は側面図、第７図は第５図−線断面図、第８
図は吐出側流れのモデル図、第９図は本考案と従
来例との自吸性能比較線図、第１０図は従来例の
自吸式ポンプの第１１図−線断面図、第１１
図は側面図、第１２図は吐出側流れのモデル図で
ある。１……羽根車、２……隔壁、３……吸込口、４
……吐出口、５……ポンプケーシング、６……ヘ
ツドカバー、７……吸込流路、８……気水分離室
、９……吐出流路、１０……分流壁、１１……吐
出通路、１２……戻し通路、２１，３１……水平
方向仕切板、２１ａ……端部、２２……入口、２
３，３３……戻り流路、３２……小穴。 Fig. 1 is a sectional view taken along the line shown in Fig. 2 of a self-priming pump showing the first embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a sectional view taken along the line taken from Fig. 1, and Fig. 4 is a discharge A side flow model diagram, FIG. 5 is a cross-sectional view taken along the line shown in FIG. 6, and FIG. 7 is a cross-sectional view taken along the line taken in FIG. , 8th
Figure 9 is a model diagram of the flow on the discharge side, Figure 9 is a self-priming performance comparison diagram between the present invention and a conventional example, Figure 10 is a sectional view taken along the line 11-- of the conventional self-priming pump, and Figure 11 is
The figure is a side view, and FIG. 12 is a model diagram of the flow on the discharge side. 1... Impeller, 2... Partition wall, 3... Suction port, 4
...Discharge port, 5...Pump casing, 6...Head cover, 7...Suction channel, 8...Steam/water separation chamber, 9...Discharge channel, 10...Diversion wall, 11...Discharge passage, 12... Return passage, 21, 31... Horizontal partition plate, 21a... End, 22... Inlet, 2
3, 33...Return channel, 32...Small hole.

Claims

[Scope of Claim for Utility Model Registration] 1. A discharge port leading to the steam/water separation chamber of the pump casing that houses the impeller is separated by a flow divider wall, and the discharge port allows the steam/water mixture to flow into the steam/water separation chamber during self-priming operation. In a self-priming pump that has a passage and a return passage for returning water after air and water separation into the pump casing,
A horizontal partition plate is disposed below the steam/water separation chamber, and a return flow path is formed in which the water after the steam/water separation flows along the lower surface of the partition plate to lead to the return path. Suction pump. 2 The discharge port leading to the steam separation chamber of the pump casing that houses the impeller is divided by a flow dividing wall, and a discharge passage through which the steam and water mixture flows into the steam separation chamber during self-priming operation, and a discharge port leading to the steam separation chamber of the pump casing that houses the impeller, and a In a self-priming pump that has a return passage that returns water into the pump casing,
A horizontal partition plate is disposed below the steam/water separation chamber, and the water after steam/water separation flows along the lower surface of the partition plate through an end portion of the partition plate located away from the discharge passage. A self-priming pump characterized by forming a return passage leading to a return passage. 3 The discharge port leading to the steam separation chamber of the pump casing that houses the impeller is divided by a flow divider wall, and a discharge passage through which the steam and water mixture flows into the steam separation chamber during self-priming operation, and a discharge passage leading to the steam separation chamber of the pump casing that houses the impeller, and a In a self-priming pump that has a return passage that returns water into the pump casing,
A horizontal partition plate is arranged below the steam/water separation chamber, and a plurality of small holes are provided in the horizontal partition plate at a position away from the discharge passage, so that the water after the steam/water separation passes through these small holes. A self-priming pump characterized in that a return passage is formed that flows along the lower surface of the partition plate and reaches the return passage.