SU785544A1 - Concrete pump - Google Patents

Description

(54) CONTAINER PUMP

one

The invention relates to pumping equipment, in particular to pumps for pumping viscous and non-uniform liquids.

A concrete pump containing a distributing device in the form of a swinging nozzle having one end permanently connected to the discharge pipeline and the other alternately connected to two working cylinders by means of windows made in the wall of the receiving hopper, the connection pipe in the interface with the latter is provided with a removable wear ring 13 in the well-known pump wear resistance ring is rigidly fixed to the nozzle with the help of bolts and as the ring wear, resulting from the action of abrasive, In the pumped concrete mixture, a rapidly progressive unremovable gap is formed between the wall of the receiving bin and the ring, which significantly affects the durability of the pump, in particular its distribution

devices.

The purpose of the invention is to increase durability. This goal is achieved by the fact that the wear-resistant ring is mounted with the possibility of axial movement relative to the nozzle and between them is installed an elastic element for pressing the ring against the receiving wall

5 bunkers.

FIG. 1 shows a concrete pump with a partial cut along the working cylinder and the distribution manifold; in fig. 2 - concrete pump,

O plan; in fig. 3 is a view along arrow A in FIG. one; in fig. 4 is a section BB in FIG. one; in fig. 5 is a sectional view BB in FIG. 3. in FIG. 6 is a sectional view of FIG. four; in fig. 7 - node 1

15 in FIG. four.

The concrete pump contains a distribution device in the form of a swinging nozzle 1, one end of which is permanently connected to the injection

pipe 2, and the other in the extreme positions of the pipe is alternately connected to the working cylinder cylinders 3, 4 by means of windows made

25 into the receiving bin 5 of the receiving bin 6. The connecting pipe 1 in the interface with the wall 5 of the receiving bunker 6 is equipped with a removable WEAR-RESISTANT ring 7 installed with the possibility of axial movement relative to the connecting pipe 1, and between: 7 to the wall 5.

Pipe 1 at the end facing-To the working cylinders has a plate 9; rigidly connected to the axis of the swing 10 of the nozzle 1, and on this axis on the opposite side of the wall 5 is fixed a lever 11, pivotally connected to the hydraulic cylinder 12, which provides movement of the nozzle 1 when the pumped concrete mix is distributed. The nozzle 1 is provided with side blades 15 fixed to it with bolts 13 and linings 14, having grooves 16 for adjusting the position of the blade relative to the bottom of the receiving hopper 6. In wall 5, a window 18 is provided with a lid 17 for mounting and dismounting the wear-resistant ring 1 and an elastic element 8. In the working cylinders 3, 4 installed pistons; 19, 20, driven in reciprocating movement using hydraulic cylinders 21, 22.

Concrete pump works as follows. In one of the extreme positions of the pipe 1, it communicates with the working cylinder 3, the piston 19 of this cylinder under the action of the force; the hydraulic cylinder 21 moves to the side; the receiving hopper 6 and displaces (the concrete mixture from the cylinder 3 - into the cutting branch 1 and further into the discharge pipe biping line 2 is in tact; the working cylinder 4 communicates with the receiving hopper, the piston 20 under the action of the force of the hydraulic cylinder 22 moves away from the receiving hopper 6, the volume of the cylinder 4 increases, and the concrete mix fills the last - the whole thing happens syvani. After cycles pipe 1 the hydraulic cylinder 12 is transferred into another extreme position in which a working cylinder 3 takes place suction stroke and in the working cylinder 4 stroke injection

Ari turning the nozzle 1 of its blade 15 facilitates the movement of the concrete mix in the lower part of the receiving bin, eliminates the formation of stagnant zones and virtually eliminates the jamming of the nozzle 1 when large aggregate aggregates of concrete mix get into the zone between the nozzle and the bottom of the receiving bunker. As the blades wear 15, their position

relative to the hopper is adjustable.

The constant pressing of the wear-resistant ring 7 against the wall 5 of the receiving hopper 6 ensures an almost constant clearance in the interface area of the socket 1 with the wall 5, regardless of the amount of wear

surfaces, which prevents the concrete mixture from being forced into the bunker during the injection cycle and significantly increases the durability of the distribution unit and the pump as a whole.

Claims (1)

1. For the application of the Federal Republic of Germany No. 2444464, cl. F 04 B 15/02, 1975. ../g