JPS62130184U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a preferred embodiment of the pump for pumping fresh concrete, etc. according to the present invention, Fig. 2 is a plan view of Fig. 1, and Figs. 3 to 5 are conventional pumps for pumping ready-mixed concrete, etc. It is a partial side sectional view for explaining the operation|movement of this. In the diagram, 1 is a pressure pump for fresh concrete, etc., 2
is the hopper, 3 is one side wall of the hopper, 4 is the penetration tube, 6 is the other side wall of the hopper, 7 is the tip of the penetration tube, 8 is the discharge pipe, 9 is the piston, 21 is the water pipe, and 21a is the water outlet. .

Claims (1)

[Scope of utility model registration request] An intrusion tube is provided on one side wall of the hopper for storing ready-mixed concrete, etc., and is provided so as to be able to freely advance and retreat within the hopper, and when the tube moves forward, takes in the ready-mixed concrete, etc., into the inside from the opening at its tip; A tube constituted by a discharge pipe provided on the other side wall and into which the tip of the penetration tube is inserted, and a piston provided in the penetration tube for forcing fresh concrete, etc. taken into the penetration tube to the outside through the discharge pipe. In the penetrating type pressure pump, a water pipe is inserted into the penetrating tube from its rear end along the rear end for washing fresh concrete, etc. adhering to the inner peripheral surface of the penetrating tube, and a water discharge port is installed at the tip of the water pipe. A pump for pumping ready-mixed concrete, etc., characterized in that the piston extends near the retracted position of the piston.