SU981151A1 - Apparatus for hydraulic transport of loose materials - Google Patents

Description

The invention relates to the hydrotransport of bulk materials, namely, a device for the hydraulic transport of bulk materials and can be used, for example, by transporting pyrite cinder, sand, gravel and other hard and highly abrasive materials.

A device for the hydraulic transport of materials is known, comprising vertically mounted chambers with discharge pipes, equipped with float-type dividers with a diameter equal to the inner diameter of the chamber, which divide the chambers into two parts, the upper one being filled with water and hydraulic mixture. -I

However, the device does not provide for flushing the valves with water and, consequently, the required reliability of work during the transportation of materials prone to segregation and having adhesive properties.

In the hydraulic transportation of materials from the chemical industry, for example, a pyrite cinder containing acids and highly abrasive solids, it is very important to increase the reliability of operation to prevent the ingress of solid particles into the pump and ensure that the valves are flushed with clean water.

A device for the hydraulic transport of bulk materials is known, comprising a pump, charging tanks communicated through the inlet nozzles with valves to the discharge nozzle of the pump, and

10 through the branch pipes from the valve. Mn - with a drain pipe, having a shut-off organ, a main pipeline and a slurry basin, each of which are connected with loading chambers through check valves and flow meters with threshold elements. This device prevents solid particles from entering the pump and flushing valves with clean water.

However, it contains many parts and assemblies (position sensors of the transporting fluid, floats), which complicates the design and at the same time reduces its reliability.

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The purpose of the invention is to increase the reliability and simplify the design.

The goal is achieved by the fact that in the device for the hydraulic transportation of bulk materials

30 measures with threshold elements are installed on the inlet and drain nozzles, respectively, in front of the pump and the locking body, the threshold element of the first of them is connected with the actuators of the locking member and valves installed on the inlet, outlet and drain pipes, and the threshold element of the second with the locking mechanism actuator.

The drawing shows a schematic diagram of the proposed device for the hydraulic transport of bulk materials.

For the transported material, prepared in the form of sludge (pulp), the device has a slurry pool 1, which is connected to the loading chambers 2 and 3 via pipe 4, equipped with check valves 5 and b. Chambers 2 and 3 are connected to the main pipeline 7 via check valves 8 and 9. For supplying the working fluid in chambers 2 and 3, inlet pipes 10 and 11 are provided, of suction pressure, connected to pump 12 via valves 13 and 14 and the flow meter 15 , The threshold element 16 of the flow meter 15 is connected with the actuator 17 of the valves 13,14, 18 and 19 installed on the pipes 10 and 11 and the valve body 20 installed on the power pipe 21. To register the drain water from the chambers 2 and 3 to the pool 22 on the drain pipe 21 mounted flowmeter 23, thresholds An element 24 of which is connected to the actuator 25 of the valve 20. In order to reduce the contact surface of the water with clean water, floats can be placed in chambers 2 and 3. When the chamber is horizontal, the float is designed as a ball with a smaller diameter than tube chamber.

The device works as follows.

The transported sludge flows by gravity from the sludge pool 1 through the open non-return valve 5 into the charging chamber 2, and the water is forced out of the chamber through the nozzle 10, the open valve 18, the nozzle 21 and the flow meter 23 into the pool 22. At the same time, the water coming from the pump 21 through open valve 14 and pipe 11 into chamber 3, displaces the slurry remaining from the previous cycle through open valve 9 into the main pipeline 7. Valves 13 and 19 and check valves 8 and b are closed at this time. When water passes through the flow meter 23, element 24 registers the amount of water drained into pool 22 and when the water flow rate specified by the program of operation of the device is reached, element 24 triggers and sends a signal to actuator 25 to close valve 20. After closing valve 20, water is drained into pool 22 and the sludge filling of chamber 2 stops, and in chamber 3 the process of squeezing the slurry into the pipeline 7 continues. When the programmed water flow rate is reached

element 16 of the flow meter 15 gives a signal to the actuator 17 to switch the valves 13, 14, 18 and 19 and the locking member 20, and the latter opens. The check valves 5, b, 8, and 9 switch automatically under the pressure of the sludge. After the valves and shut-off member 20 are switched, a new cycle begins — unloading chamber 2 and loading chamber 3.

In order to prevent the solid fraction from entering the pump and ensuring that the valves are flushed with clean water, the amount of water supplied by the pump to the chamber during each operating cycle must be

somewhat more than the amount of water discharged into the pool. This requirement is achieved by appropriate adjustment of elements 16 and 24. The difference between the amount of water supplied to the chamber and the amount of water discharged from the chamber to the pool is the water flow for flushing the valves for each worker cycle.

The technical and economic efficiency of the proposed technical solution is to increase the durability of the pump, the reliability of the system and, consequently, to reduce operating costs.

Claims (2)

1. Author's certificate of the USSR 350719, cl. B 65 G 53/30, 1966. 2. For Japan Japan 52-37278, cl. B 65 G 53/66, 1977 (prototype).