Pumping mechanism, distributing valve thereof and concrete pumping machine

Abstract

A pumping mechanism and the distributing valve thereof and a concrete pumping machine are disclosed. The distributing valve includes a valve casing (100) and a valve core (200) located in the pumping chamber of the valve casing. The valve core is rotatably connected to the valve casing, thus forming a main rotating axis (O). The valve casing has a discharge hole (103) throughout the casing wall, a first suction hole (101) and a second suction hole (102). The valve core has a distributing port (202) and a feed port (201) communicated with a material container. A pumping channel is formed between the peripheral face of the valve core and the inner wall face of the pumping chamber. The peripheral face of the valve core is provided with two cutting plates (210) protruding from two sides of the distributing port respectively. The outer side faces of the two cutting plates are rotatably sealedly matched with the sealing face of the valve casing. In a first state, the distributing port is communicated with the first suction hole through the space between the two cutting plates. In a second state, the distributing port is communicated with the second suction hole through the space between the two cutting plates. The distributing valve has a smaller matching area for cutting so as to ensure better sealing performance whilst have higher driving performance.

Description

[0001]The present application claims the priority to the Chinese patent application No. 201110103005.3 filed with the State Intellectual Property Office of the PRC on Apr. 22, 2011 and entitled “A Pumping Mechanism and the Distributing Valve Thereof and A Concrete Pumping Machine”, which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to a technology of pumping a viscous material, particularly concrete, and especially to the distributing valve of a pumping mechanism, and also relates to a pumping mechanism comprising the distributing valve, and a concrete pumping machine comprising the pumping mechanism.BACKGROUND OF THE INVENTION[0003]Currently, during conveying concrete and other viscous materials, usually a pumping mechanism is used to pump the materials to convey concrete or other viscous materials from one position to another predetermined position, to achieve a predetermined object. The pumping mechanism usually com...

AI Technical Summary

Benefits of technology

The present invention provides a distributing valve for a pumping mechanism. The valve has a high performance and ensures good sealing.

Problems solved by technology

While the enhancement of the sealing performance will increase the driving force required by driving the rotation of the valve core, lower the driving performance of the distributing valve and increase the energy consumption of the distributing valve.

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