JPS59172287U

JPS59172287U - Concrete pump seal structure

Info

Publication number: JPS59172287U
Application number: JP6692083U
Authority: JP
Inventors: 川俣　文彦; 明田中
Original assignee: 石川島播磨重工業株式会社
Priority date: 1983-05-06
Filing date: 1983-05-06
Publication date: 1984-11-17

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

[Brief explanation of drawings]

第１図は従来例を示す斜視図、第２図は第１図の要部を
示す即断面図、第３図は本考案の好適一実施例を示す一
部破断乎面図、第４図は第３図のＩＶ−ＩＶ矢視断面図
、第５図は第４図の要部を示す即断面図、第６図は変形
例を示す要部即断面図である。図中、１はホッパ、１ａはその底部、２は開口端部、３
はポンプ、６は搬送系、９は吐出管、９ａはその先端部
、１７はシールプレート、１８はシールリング、１８ｂ
は、その着座面、１９はパツキン、２０は圧力室である
。Fig. 1 is a perspective view showing a conventional example, Fig. 2 is a sectional view showing the main part of Fig. 1, Fig. 3 is a partially cutaway view showing a preferred embodiment of the present invention, and Fig. 4. 3 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a sectional view showing the main part of FIG. 4, and FIG. 6 is a sectional view of the main part showing a modification. In the figure, 1 is a hopper, 1a is its bottom, 2 is an open end, and 3
is a pump, 6 is a conveyance system, 9 is a discharge pipe, 9a is its tip, 17 is a seal plate, 18 is a seal ring, 18b
is its seating surface, 19 is a gasket, and 20 is a pressure chamber.

Claims

[Scope of utility model registration request]

A plurality of pumps are provided at the bottom of a hopper that accommodates fresh concrete, each having an open end from which the fresh concrete is sucked and discharged, and a conveying system that is selectively connected to these open ends to transport the discharged fresh concrete. In the concrete pump, the concrete pump is equipped with a seal plate formed by enlarging the peripheral edge of the opening end, and a seal plate that is fitted into the tip of the discharge pipe so as to be able to extend freely in the longitudinal direction. a seal ring seated on the seal plate so as to guide fresh concrete discharged from the open end into the discharge pipe; and a visible packing provided between the seal ring and the discharge pipe; A pressure chamber that is enlarged along the inner circumference of the seal ring and is used for discharge presses the seating surface of the seal ring against the seal plate, and also presses the gasket between the seal ring and the discharge pipe. A concrete pump seal structure characterized by comprising: