SU1669487A1 - Hydrocyclone and flocculator - Google Patents

Abstract

The invention relates to a slurry separation technique and allows for improved clarification efficiency and reliability in seismic conditions. When contaminated water is supplied through the tangential nozzles 2 in the housing (K) 1, the particles are separated, which settle to the bottom and are scraped by the farm 8 to the slurry nozzle 3. The clarified diaphragm (D) 5 water is directed to the upper part K 1, where it is drained through window 13 into the tray and is discharged through the pipe 7. Performing D 5 in the form of a pontoon with rollers 12 allows it to float under seismic loads. In the stationary state, D 5 is mounted on an annular support 9 and secured with latches 10. The water-air mixture accumulated under D 5 and contamination by an airlift 14 are lifted into tank 16, where separation takes place, and the water returns to K 1 at K 1. 4 silt

Description

The invention relates to a technique for separating non-uniform liquid media, in particular, devices for separating a suspension in a field of centrifugal and gravitational forces, and can be used in the metallurgical industry and in wastewater treatment.

The purpose of the invention is to increase the efficiency of clarification and reliability of work in seismic conditions.

Figure 1 shows a hydrocyclone-flocculator, general view; figure 2 is the same vertical section; on fig.Z - section aa in figure 2; figure 4 - section bb in fig.Z.

A hydrocyclone-flocculator consists of a cylindrical body 1 with a conical or flat bottom with tangential nozzles 2 for supplying raw water and a sludge nozzle 3 for draining slime from the bottom of the body.

The outlet of the tangential nozzles 2 is located in distribution chambers 4, made in the form of segment compartments and having guides, for example, in the form of strips for uniform drainage and distribution of the water entering the hydrocyclone.

In the upper part of the housing there are located a diaphragm 5 and a tray 6 outside the housing for discharging clarified water, as well as a discharge pipe 7.

Inside the case of a hydrocyclone is a farm 8 for raking up the sludge to the nozzle 3.

The diaphragm 5 is made in the form of a pontoon, made, for example, of sheets interconnected by vertical partitions (ribs). This creates rigidity and at the same time maintains the buoyancy of the diaphragm in the event water gets into any of the compartments,

The diaphragm 5 is installed at the bottom of the tray 6, rests on the annular support 9 and prevents the treated water from entering the tray.

In order to keep the diaphragm 5 in a stationary position and to prevent it from floating up, it is fixed to the working position locks 10, fixed, for example, on a perforated partition 11.

The implementation of the locking position of the working position 10 may be different. For example, these may be stripes with bolts that, when seismic loads appear, are cut off and thereby allow the diaphragm to float. The fixed movement (ascent) of the diaphragm is attached to the rollers 12 fixed on it, which move along the inner surface of the housing 1.

Along the perimeter of the hydrocyclone, in the upper part there are slots or windows 13, while they are arranged so that their lower edge coincides with the usual water level in the hydrocyclone, and the upper edge corresponds to the maximum wave height of the treated water in the case of hydrocyclone operation under seismic loads.

0 Along the perimeter of the hydrocyclone, on the inner surface of the housing are devices for removing the water-air mixture and pollution. Each of the devices is made in the form

5 airlift 14 and drain nozzle 15. In the upper part of the hull, the airlift and drain nozzle communicate with each other by means of a tank 16, which is attached to the wall of the hull, while the airlift outlet 14 in the upper part

0 and the inlet in the lower part exceeds the inlet and outlet of the discharge pipe 15, and the airlift inlet 14 and the outlet of the drain pipe 15 are located below the diaphragm 5.

The hydrocyclone-flocculator works in the following way.

The contaminated water enters the housing 1 through the tangential nozzles 2, passes the distribution chambers 4 and, through the slots formed by the guides, enters the settling zone formed by the entire central volume of the hydrocyclone to the level of the diaphragm 5. The passage through the perforated partition 11, the water begins to settle, wherein

5, the mechanical impurities settle to the bottom of the hydrocyclone, and the farm 8 rakes to the slurry pipe 3 and is discharged in a known manner.

The clarified water by the diaphragm 5 h0 is placed in the upper part of the hydrocyclone, where the slots or windows 13 located along the perimeter of the hydrocyclone in its upper part allow the clarified water to evenly drain into the barrel of the housing 1, from where it is removed through the discharge pipe 7. Under seismic conditions, the height of the slits, i.e. the location of their lower rim with the usual water level in the hydro cyclone, and the upper one corresponding to the maximum wave height, ensures a constant and uninterrupted removal of purified water from the hydro cyclone. With seismic effects and the appearance of a wave in a hydrocyclone, the water in the spaces between the earthquakes merges into tray b and the operation of the hydrocyclone is not interrupted.

The location of the drain pan 6 outside the hydrocyclone body 1 ensures trouble-free operation, since in this case it is not affected by seismic loads from moving the water wave in the hydrocyclone, and its volume allows the excess water to be extinguished as it moves wave.

The execution of the diaphragm 5 in the form of a pontoon containing compartments ensures the trouble-free and reliable operation of the hydrocyclone, since during seismic loads its operation is not interrupted by means of a diaphragm fixed by means of rollers 12. This condition is achieved by mounting the diaphragm 5 on the annular support 9 and the operating positions 10.

The water-air mixture accumulated under the diaphragm 5 and the airlift contamination 14 are raised, where water and air are separated in the tank 16. In doing so, the water returns to the hydrocyclone through the discharge pipe 15. This process is ensured by the fact that the airlift and the drain nipple in the upper part communicate with each other by means of a tank 16 and are installed so that the outlet of the airliner and 14 E of the upper part and the entrance in the lower part raise the inlet and outlet of the drain nipple 15, and the airlift inlet 14 and the outlet of the discharge pipe 15 is located below the diaphragm 5, i.e. air is effectively removed from the clarification zone and contaminated water is prevented from entering the tray b.

Claims (1)

Invention Formula Hydrocyclone-flocculator containing a housing with inlet and outlet connections, distribution chambers in the upper housing, a diaphragm and a tray for clarified water, a truss for removing sediment, which is characterized in that to improve the efficiency of clarification and reliability of operation in seismic conditions, the diaphragm is made in the form of a working position of a pontoon with rollers mounted on an annular support and fixers. and the fixture for diverting water-air mixture and pollution is made in the form of connected to the airlift tank and the drain pipe, with the airlift outlet located above the inlet of the drain pipe, and the airlift inlet and outlet of the drain pipe below the diaphragm. BUT FIG. 2 Water lead SHIGA Compiled by V. Timoshkov Tehred M. Morgental Corrector N. King Editor N. Shvydka i Order 2692 Circulation 450 Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035. Moscow. G-35. Raushska nab., 4/5 Water drainage