RU2114062C1 - Apparatus for separating liquid media - Google Patents

Abstract

FIELD: flotation technics. SUBSTANCE: apparatus contains chamber, liquid inlet and phase outlet connecting pipes, perforated membrane, impulse flow device, supplementary vessel with, placed inside it, diaphragm and connecting pipe with perforated conical attachment, and damping vessel installed between supplementary vessel and chamber. Apparatus may be utilized for removing suspended particles from liquids. EFFECT: improved design. 1 dwg

Description

 The invention relates to a device for separating liquid media and can be used in thermal power, chemical, oil refining and other industries, as well as for water purification.

 A known installation for flotation water treatment, containing a rectangular housing, divided into interconnected chambers by paired baffles, between which are pipelines for supplying an air-water mixture, a device for recycling purified water, consisting of a pump, an ejector and a pressure tank, water inlet and outlet units and a mechanism for removal of emerging contaminants [1].

 However, this installation is designed to separate emerging contaminants, i.e., to separate only light particles. It has large overall dimensions, several chambers, a pressure tank and an extensive piping system - all this reduces productivity and separation efficiency.

 A device is known for extracting particles suspended in a liquid, including a chamber, pipelines for supplying liquid and phase extraction, a perforated membrane (prototype) [2].

 However, this device, using the flotation method, can extract only light particles from the liquid. The presence of heavy particles in the liquid will lead to clogging and a decrease in the throughput of the membrane and the flow rate of the device. This significantly reduces the separation quality, productivity and efficiency of this process. In addition, additional time and costs will be required to remove heavy particles, which disrupts the continuity of the process.

 The invention is aimed at solving the problem of increasing the productivity and quality of separation of liquid media, as well as improving the efficiency of separation by ensuring the continuity of this process and its cost reduction.

 This is achieved by the fact that the device is equipped with an additional tank, inside of which a nozzle with a conical nozzle having holes, and a diaphragm, and a damping tank installed between the additional tank and the camera are mounted along the axis.

 The drawing shows the proposed device.

 A device for separating liquid media consists of two modules 1 and 2 and a damping tank 3. A damping tank 3 is used as necessary. Module 1 is designed to separate large suspensions or substances having a greater bulk density compared to a liquid. The structure of module 1 includes a tank 4, a pump 5, a valve (valve) 6, a pipe 7, an additional container 8, a diaphragm 9, a pipe 10. The pipe 7 has a conical nozzle 11 with holes. The diameter of the holes of the conical nozzle 11, their location and quantity depend on the parameters of the liquid. Moreover, the pipe 7 with a conical nozzle 11, mounted on the axis of the additional tank 8, can be directed up or down depending on the nature of the liquid and the suspensions present in it.

 The additional container 8 is made in the form of a cylinder 12, which is connected in the lower part to the cone 13. A pipe 14 with a valve 15 is fixed in the lower part of the cone 13, through which heavy particles are discharged from the additional container 8. The upper part of the additional tank 8 has a free mirror through which the liquid freed from heavy particles is poured into the receiving manifold 16. A diaphragm 9 is installed inside the additional tank 8, which oscillates with a certain frequency. The diaphragm can be made in the form of a disk of a certain diameter or in the form of a mesh partition with a given mesh. The diameter of the diaphragm 9, the frequency and amplitude of the oscillations depend on the characteristics of the fluid and on the pressure that is created by the pump 5. Moreover, the pressure (pressure) of the fluid and the flow rate are regulated by the pump 5 depending on the parameters of the fluid and the performance of the device.

 Module 1, depending on the performance, can be made in the form of a single functional unit or in the form of several units operating in parallel from one pump as well as from several, as well as in series from sequentially located pumps.

 The damping tank 3 serves to connect the modules 1 and 2 and to create a uniform fluid flow.

 Module 2 is designed to separate from the fluid media of a smaller volumetric weight of the fluid. The composition of the module 2 includes a pipe 17, a pump 18, a valve 19, a fluid flow breaker 20 and a chamber 21. A fluid flow breaker 20 is used to create a water hammer. The chamber 21 is made in the form of a parallelepiped, a flexible diaphragm 22 with openings and a partition 23 are installed inside the chamber. A flexible diaphragm 22 is designed to separate media, the lighter ones being charged together with air form a foam that floats to the surface of the liquid and is removed, and the remaining liquid passes through the partition 23 and is discharged through the pipe 24, on which the valve 25 is installed.

 Module 2 may consist of one or more functional blocks operating both in series and in parallel. Moreover, the sequential installation of several modules 1 and 2 contributes to a significant increase in the quality of separation of liquid media.

 The device operates as follows.

 The liquid containing suspended particles from the tank 4 is pumped to the additional tank 8 by means of a pump 5. The fluid is supplied to the additional tank 8 through a nozzle 7 and a conical nozzle 11. The media are separated in the additional tank 8 due to the impact of the fluid flow with the oscillating diaphragm 9 , while suspensions having a greater bulk density than the liquid itself are separated from the liquid and, under the action of gravity, are lowered into the lower part of the additional container, made in the form of a cone 13. Removing heavy parts c and sediment are carried out when the valve is opened 15. The liquid freed from heavy particles is poured into the intake manifold 16 and enters through the pipe 10 into the damping tank 3. The separation process can be adjusted by changing the pressure and flow rate of the supplied liquid, changing the frequency and amplitude of oscillations of the diaphragm 9. The adjustment of the liquid separation process can also be carried out by installing the corresponding conical nozzle 11 or by changing the fluid flow using valve 6, opening and closing which can be done manually or automatically.

 From the damping tank 3, the fluid through the pipe 17 through the pump 18 enters the circuit breaker 20 of the fluid flow. The fluid flow interrupter 20 creates a water hammer, which causes the flexible diaphragm 22 to oscillate. From the influence of vibrational movements, light suspensions (particles) are separated from the liquid and connected to the air particles contained in the liquid. Light suspensions by the flotation method together with the air rise upward in the chamber 21 and form a foam. As foam accumulates on the surface of the liquid, it is removed. The liquid freed from light suspensions is discharged from the chamber 21 through the pipe 24. The separation process is controlled by changing the pressure or flow rate using valves 19 and 25, which can be controlled manually or automatically.

 The proposed device for the separation of liquid media implements this process continuously with high productivity, the absence of filter materials, catalysts and other substances in the process significantly reduces its cost and increases the separation efficiency.

Claims (1)

 A device for separating liquid media containing suspended particles, containing a chamber, fluid supply and phase discharge pipes, a perforated membrane and a pulsed consumable device, characterized in that it is equipped with an additional tank in which a nozzle with a conical nozzle having openings is installed along the axis, and diaphragm, and a damping tank installed between the additional tank and the camera.