CN2528510Y - Oil-water separation cyclone with novel inlet and overflow structure - Google Patents

Abstract

A cyclone separator for separating two kinds of immiscible oil-water mixed liquid is composed of overflow port 1, cylindrical segment 2, inlet 3, large conic segment 4, small conic segment 5 and straight tube segment 6, which are sequentially connected, and features that there is inlet 3 on cylindrical segment 2, overflow port 1 on top of cylindrical segment 2, and eddy shielding cover and/or overflow detecting solid column, overflow hole in center of column, and cyclone inlet 3 is inclined by a certain angle to the main flow direction of liquid.

Description

Oil-water separation cyclone with novel inlet, overflow structure

The utility model relates to the cyclone separator that separates two kinds of immiscible oil-water mixed liquids, specifically, is the oil-water separation cyclone that has new type tail tube and rectifier structure.

At present, the conventional method of water-oil separating often is gravity type, filtration, air supporting choosing and biological treatment, because the restriction in space, the gentle flotation oil water separating method of gravity type is difficult to be suitable for, and air supporting choosing and the processing cost of filtering are higher than rotational flow separation, also there is the backwash problem in filter method, and its use is subjected to certain restriction.

The purpose of this utility model is to overcome the deficiency that the traditional oils water separation equipment is bulky, separative efficiency is lower, provides that a kind of volume is little, separative efficiency is high, treating capacity accommodation is big, simple in structure, the oil-water separation cyclone that has new type tail tube and rectifier structure of convenient operating maintenance.

The utility model is achieved in that by overfall 1, cylindrical section 2, inlet 3, large cone section 4, small cone section 5, straight length 6 to be formed, cylindrical section 2, large cone section 4, small cone section 5, straight length 6 are linked in sequence, inlet 3 is arranged on the cylindrical section 2, overfall 1 is arranged on the end face of cylindrical section 2.

The utility model also adopts following technical scheme

Inlet 3 on the cylindrical section 2 can be more than one, and can be tangential inlet, also can be the involute inlet.

Inlet 3 in the plane be projected as rectangle, this plane is by cyclone axis and the inlet 3 center lines intersection point with cylindrical section 2 inwalls, rectangle length limit b is parallel to the cyclone axis, minor face is a, the length-width ratio b/a of rectangle is 3～8,3 equivalent diameter D enter the mouth _iWith cylindrical section 2 intracavity diameter D _CRatio D _i/ D _CBe 0.2～0.3.

Inlet 3 is 1～10 degree with the tilt angle gamma of fluid main flow direction.

Vortex shielding case and external diameter and cyclone cylindrical section 2 inside diameter D of leaving over the detection solid post _CDifference should 〉=twice of rectangle entrance 3 minor face width a, vortex shielding case and overflow-detecting solid column go deep into the length L of chamber section _yShould compound b≤L _yL ₁

≥

Overfall 1 diameter D ₀=0.01～0.05D _c

Large cone section 4 cone angle beta=10～40 degree.

Small cone section 5 cone angle=1～3 degree.

The diameter D of straight length 6 _u=0.2～0.4D _C, length L ₂=10～50D _C

The utility model is compared the new construction that adopts vortex shielding case and/or overflow-detecting solid column, post center that spout hole is arranged, cyclone inlet 3 to the liquid main flow direction a certain angle that tilts with in the past oil removing and/or presorting hydrocyclone, can lower pressure drop so effectively and improve separating effect.

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is the shape figure of cyclone inlet 3;

Fig. 3 is the cutaway view of vortex shielding case;

Fig. 4 is the cutaway view of another kind of vortex shielding case;

Fig. 5 is the cutaway view of overflow-detecting solid column.

Below in conjunction with accompanying drawing the utility model is further described:

As shown in Figure 1, the oil water mixture with certain pressure has the one or more tangential or involute inlet 3 on the cylindrical section 2 to enter in the cyclone, carries out water-oil separating through the acceleration of large cone section 4 at small cone section 5 and straight length 6; The light decentralized photo oil counter motion of telling is discharged from overfall 1, purifies waste water and discharges from underflow opening through straight length 6.

The entrance section of above-mentioned oil-water separation cyclone is a rectangle, see Fig. 2, inlet 3 in the plane be projected as rectangle, this plane is by the intersection point of cyclone axis and inlet 3 center lines and cylindrical section 2 inwalls, the long limit b of rectangle is parallel to the cyclone axis, minor face is a, and the length-width ratio b/a of rectangle is 3～8, and 3 equivalent diameter D enter the mouth _iWith cylindrical section 2 intracavity diameter D _CRatio D _i/ D _CBe 0.2～0.3.Should get smaller value to the mixture that the water-oil separating difficulty is bigger, inlet can be two or more, all can see from transparent cyclone pipe experimental study and cyclone pipe numerical simulation, two or more inlets 3 make the cyclone pipe flow field have more axial symmetry, the wick that assemble at axle center place is handed over stable, and wick is for the helical movement admires greatly remarkable minimizing.

The tilt angle gamma that cyclone pipe inlet 3 tilts to the fluid main flow direction is to reduce the effective measures of cyclone pipe pressure drop, under same traffic, tilt angle gamma maelstrom pipe energy consumption more is more little, liquid is also short more at the eddy flow intraductal retention time, as long as the inclination angle is suitable, oil separates effect and can significantly not descend, and under the cyclone pipe same pressure drop, cyclone pipe treating capacity and separating effect also can improve.Inlet 3 is 1～10 degree with the tilt angle gamma of fluid main flow direction.

The external diameter of vortex shielding case (Fig. 3,4) and overflow-detecting solid column (Fig. 5) and cyclone cylindrical section 2 inside diameter D _CDifference should 〉=twice of rectangle entrance 3 minor face width a, vortex shielding case and overflow-detecting solid column go deep into the length L of chamber section _yShould compound b≤L _y≤ L ₁The effect of vortex shielding case is that the fluid that rotates in cyclone pipe charging and the cyclone pipe is separated, and avoids the interference of incoming flow to the reverse flow wick, and wick is more stably discharged from overfall 1.Experimental study shows, the resistance that the liquid relative motion is produced that rotates in less than incoming flow and cyclone pipe of the flow resistance in the runner that incoming flow forms between cylinder inwall and radome outer wall, thereby, radome reduce in addition the to enter the mouth effect of 3 fluid resistances.

Overflow diameter D ₀=0.01～0.05D _c, large cone section 4 cone angle beta=10～40 degree.The effect of big cone angle also applies centripetal force to light decentralized photo (oil) except that liquid stream is rotated the acceleration, help light decentralized photo and assemble to the cyclone pipe axle center, thereby big cone angle is difficult for too small.

Small cone section 5 cone angle=1～3 degree.

The diameter D of straight length 6 _u=0.2～0.4D _C, length L ₂=10～50D _C

Claims (9)

1. The oil-water separation cyclone with a new inlet and overflow structure consists of an overflow (1), a cylindrical section (2), an inlet (3), a large cone section (4), a small cone section (5), a straight The pipe section (6) is composed of a cylindrical section (2), a large cone section (4), a small cone section (5), and a straight pipe section (6) connected in sequence, and the cylindrical section (2) has an inlet (3), An overflow port (1) is arranged on the top surface of the cylindrical section (2). 2. The oil-water separation cyclone with novel inlet and overflow structure according to claim 1, characterized in that: the inlet (3) on the cylindrical section (2) can be more than one, and can be a tangential inlet, Involute entry is also possible. 3. The oil-water separation cyclone with novel inlet and overflow structure according to claim 1, characterized in that: the projection of the inlet (3) on the plane is a rectangle, and the plane passes through the axis of the cyclone and the inlet (3) ) centerline and the inner wall of the cylindrical section (2), the long side b of the rectangle is parallel to the axis of the cyclone, the short side is a, the aspect ratio b/a of the rectangle is 3 to 8, the equivalent diameter of the inlet is D _i and the cylinder The ratio D _i /D _C of the inner cavity diameter D _C of section 2 is 0.2-0.3. 4. The oil-water separation cyclone with novel inlet and overflow structure according to claim 1, characterized in that: the inclination angle γ between the inlet (3) and the main flow direction of the fluid is 1-10 degrees. 5. The oil-water separation cyclone with novel inlet and overflow structure according to claim 1, characterized in that: the outer diameter of the eddy current shield and the legacy detection solid column is the same as the inner diameter of the cyclone cylindrical section (2) D _C The difference should be ≥ twice the width a of the short side of the rectangular inlet (3), and the length L _y of the eddy current shield and the overflow detection solid column deep into the chamber should be combined b≤L _y L ₁ .             ≥ 6. The oil-water separation cyclone with novel inlet and overflow structure according to claim 1, characterized in that: the diameter of the overflow port (1) D ₀ =0.01-0.05D _c . 7. The oil-water separation cyclone with a new inlet and overflow structure according to claim 1, characterized in that: the cone angle β of the large cone section (4) is 10-40 degrees. 8. The oil-water separation cyclone with novel inlet and overflow structure according to claim 1, characterized in that: the cone angle α of the small cone section (5) is 1-3 degrees. 9. The oil-water separation cyclone with a new inlet and overflow structure according to claim 1, characterized in that: the straight pipe section (6) has a diameter D _u =0.2-0.4D _C and a length L ₂ =10-50D _C.

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