SU569501A1 - Device for conveying pulp through tubes by pressure - Google Patents

Description

(54) DEVICE FOR PUNCH PUMPING

Kryigkah on the end cylinders 1, 2 and 3 are mounted in the form gidraraspredelitepi podpruzhinensh-nx dvuhpozitsionngh spools 11, mechanically interacting with the shank verhjmMH pistons 4. Each valve 11 communicates the conduit 12 with the driving tsipindra adjacent cavity, conduit 13 with a pressure pump 14 and with a drain truboprovodom15 tank 16.

Loading chambers-pipes 5 are connected by a pipe 17 and valves 18 with a pump 14. The volume of pipes 5 is greater than the working volume of cylinders 1, 2 and 3.

In addition, the device is equipped with valves 19, 20 and 21.

Before starting the device, the pipes 5 are filled with water, for which the valves 19 and 21 are closed, the valves 18 are opened, the pump 14 is turned on and the valve 20 brings it to the operating mode.

After the pipes 5 are filled with water, the valves 18 are alternately closed, and the pistons 4 are alternately lifted up and installed at various levels. After that, close the valve 20 and open the valves 19, 21 and all the valves 18.

In the position shown in the drawing, the piston 4 of the cylinder 1 is in the upper position and, with its shank, the valve 1 1 presses the upper position, thus connecting the driving cavity of the cylinder 2 with the pressure pipe 13. The pistons 4 of the cylinders 2 and 3 are in an intermediate position, and their spools 11 under the action of springs are lowered, together the driving cavities of cylinders 1 and 3 with a drain pipe 15. In this position, cylinder 2 works to pump pulp into pipeline 1O, chamber-tube 5 of cylinder 3 is filled with pulp from pump 9, and piston 4 cylinders d ra 1 is in place, the cylinder tube 5 1 already filled pulp. As the tube 5 of the cylinder 3 is filled with the pulp, its porn 4 rises up and, acting on the valve 11, raises it up, as a result of which the well-cavity of cylinder 1 communicates with the pressure pipe 13, its piston 4 moves down and displaces the pulp into pipe line 1O.

At this time, the piston 4 of the cylinder 2 is lowered to the lower extreme position, and the valve 11 of the cylinder 1 also lowers, together with the driving cavity of the cylinder 2 with the drain pipe 15, as a result of which the cylinder 2 begins to work on filling the pipe 5 with pulp. The cycle is then repeated with alternate injection and suction in each cylinder.

Due to the fact that the volume of pipes 5 is larger than the working volume of cylinders 1,2 and 3, the pulp does not penetrate into the working cavities of the cylinders and does not wear out their working surfaces and pistons 4.

During operation of the device, the working cavities of the cylinders 1, 2 and 3 are continuously fed with water from the pump 14 through the pipeline 17 and the valves 18.

Claims (3)

1. A device for injecting pulp containing vertically arranged cylinders, each of which is equipped with a voyushnm piston and a loading chamber connected by means of reciprocals; valves with a pulp supply line and an injection pipe, and hydraulic distributors, each of which is connected by pipelines with a driving cavity of one cylinder, a source of pressure fluid and a tank, characterized in that, to simplify the design, each valve is designed as a spring-loaded two-position spool mounted on end cover of the cylinder, mechanically interacting with this piston and communicated by pipeline with the drive cavity of the adjacent junction ra. .:. . / 2.Management. According to claim 1, in order to increase durability, the loading chambers crawled in the form of pipes, the volume of which is greater than the working volume of the cylinders, 3. A device according to claim 2, characterized in that the loading chambers are connected by pipelines and valves to a source of pressure fluid.