CN105413242A - Device for extracting oil from oil-water mixture - Google Patents

Abstract

The invention discloses a device for extracting oil from an oil-water mixture, and belongs to the technical field of coal tar extraction and separation. Including the oil cylinder, an oil return groove that can extend into the oil cylinder is provided on the side wall of the oil cylinder, and a pair of through holes that penetrate up and down are opened on the oil return groove that extends into the oil cylinder. There is an agitator under the liquid surface of the oil-water mixture, and an oil guide sheet for draining oil is also provided in the oil return tank. When the agitator rotates, since the oil and water are non-Newtonian fluid and Newtonian fluid respectively, the oil can climb up the stirring rod, while the water climbs up the cylinder wall, and the separation of oil and water is realized by this principle. The oil that climbs up along the rod is introduced into the oil return tank by the oil guide sheet to realize separation. The device has the advantages of simple and compact structure, energy saving and environmental protection, low cost, less power consumption and the like.

Description

A device for extracting oil from an oil-water mixture

technical field

The invention belongs to the technical field of coal tar extraction and separation, and in particular relates to a device for extracting oil from an oil-water mixture.

Background technique

Coal tar production is a product obtained by collecting raw coal gas and cooling and separating it in the process of preparing semi-coke by low-temperature pyrolysis of coal. The cooling process is carried out in the cooling tower. The cooling water is used to contact the raw coal gas to condense, and then the mixture mixed with coal tar is left to stand. The oil lighter than water floats on the top, and the oil heavier than water settles below. The oils are easily separated. However, some oils have a density similar to that of water, and it is not easy to separate them when they are mixed in water. If it is discarded, continuous production will cause large economic losses. Therefore, it is necessary to adopt an effective method to separate oil and water with similar densities.

Contents of the invention

The object of the present invention is to provide a device for extracting oil from an oil-water mixture, which has the advantages of simple and compact structure, energy saving, environmental protection and less power consumption.

The present invention is achieved through the following technical solutions:

A device for extracting oil from an oil-water mixture, including an oil cylinder, an oil return groove that can extend into the oil cylinder is provided on the side wall of the oil cylinder, and a pair of through holes that penetrate up and down are opened on the oil return groove that extends into the oil cylinder. The top is inserted with an agitator capable of reaching under the liquid surface of the oil-water mixture through the pair of through holes, and an oil guide sheet for draining oil is also provided in the oil return tank.

The included angle between the oil guide sheet and the bottom wall of the oil return tank is an acute angle.

An oil leakage pipe is arranged below the part of the oil return groove protruding from the oil cylinder.

A graduated cylinder is provided below the oil leakage pipe.

A support for supporting the oil return tank is also provided on the inner wall of the oil cylinder.

A feeding pipe is arranged on the oil cylinder, and a shut-off valve is arranged on the feeding pipe.

A reinforcing rib is also fixed on the side wall of one side of the oil cylinder where the oil return groove is arranged.

The reinforcing ribs are fixed on the outer wall of the oil cylinder through matching bolts and nuts.

Compared with the prior art, the present invention has the following beneficial technical effects:

The device for extracting oil from the oil-water mixture disclosed by the present invention has an oil return groove on the side wall of the oil cylinder, and the oil return groove part extends into the inner cavity of the oil cylinder, and an agitator capable of extending into the inner cavity of the oil cylinder is provided on the top of the oil cylinder. At the same time, An up and down through hole is provided on the oil return tank, and the agitator can extend into the lower part of the oil-water mixture through the through hole opened in the oil return tank, and an oil guide sheet is also arranged in the oil return tank. When the agitator rotates, since the oil and water are non-Newtonian fluid and Newtonian fluid respectively, the oil can climb up the stirring rod, while the water climbs up the cylinder wall, and the separation of oil and water is realized by this principle. The oil that climbs up along the rod is introduced into the oil return tank by the oil guide sheet to realize separation. The device has the advantages of simple and compact structure, energy saving and environmental protection, low cost, less power consumption and the like.

Further, an oil leakage pipe is provided under the part of the oil return groove protruding from the oil cylinder, and a measuring cylinder is arranged below the oil leakage pipe, and the oil leakage pipe connected to the oil return groove from the outer section of the oil cylinder flows into the measuring cylinder under the action of gravity.

Furthermore, the angle between the oil guide piece and the bottom wall of the oil return tank is an acute angle, which can ensure that the oil droplets climbing up the rod are quickly diverted into the oil return tank.

Furthermore, the support provided on the inner wall of the oil cylinder and the reinforcing ribs arranged on the side wall of the oil cylinder are all to make the oil return tank more firmly fixed and maintain the stability of the device.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Among them: 1 is the cut-off valve; 2 is the feed pipe; 3 is the oil cylinder; 4 is the agitator; 5 is the oil return tank; 6 is the oil leakage pipe; 7 is the measuring cylinder; 8 is the support; 9 is the reinforcing rib; 10 is the bolt; 11 is a nut; 12 is an oil guide sheet.

detailed description

The present invention is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1, the device for extracting oil from the oil-water mixture disclosed by the present invention includes an oil cylinder 3, an oil return groove 5 that can extend into the oil cylinder is provided on the side wall of the oil cylinder 3, and an oil return groove 5 that penetrates up and down is provided on the oil return groove 5. Through hole, the top of the oil cylinder 3 is inserted with the agitator 4 that can extend into the oil-water mixture through the through hole that the oil return tank 5 offers.

Preferably, the angle between the oil guide plate 12 and the bottom wall of the oil return tank 5 is an acute angle, which can ensure that the oil droplets climbing up along the rod are quickly diverted into the oil return tank 5 .

Preferably, a bearing 8 for supporting the oil return groove 5 is also installed on the inner wall of the oil cylinder 3, and a reinforcing rib 9 is installed on the outer wall of the side oil cylinder 3, and the oil return groove 5 passes through the oil cylinder 3 and the reinforcing rib 9, and adopts Bolt 10 and nut 11 are fixed on the side wall of oil cylinder 3 .

Preferably, an oil leakage pipe 6 is installed below the exposed end of the oil return groove 5 stretching out from the oil cylinder 3 , and a measuring cylinder 7 is connected below it.

The device for extracting oil from the oil-water mixture of the present invention, when in use:

Open the shut-off valve 1, and inject the oil-water mixture with similar density into the oil cylinder 3 through the feed pipe 2. When the agitator 4 is energized and the agitator 4 rotates, since water and oil are Newtonian fluid and non-Newtonian fluid respectively, according to the pole-climbing effect of non-Newtonian fluid, the oil will climb up along the rod of the agitator 4, while the water will stick to the rod of the agitator 4. on the wall of the cup. The oil that climbs up passes through the gap between the oil return tank 5 and the rod of the agitator 4, flows into the oil return tank 5 under the action of the oil guide plate 12, and then protrudes below one end of the oil cylinder 3 along the oil return tank 5 under the action of gravity The installed oil leakage tube 6 flows into the graduated cylinder 7 .

Claims (8)

1. one kind is extracted the device of oil from oil water mixture, it is characterized in that, comprise oil cylinder (3), oil cylinder (3) one sidewall is provided with and can stretches into in-oil cylinder oil-recovery tank (5), stretching into the through hole oil-recovery tank (5) in oil cylinder (3) offering a pair up/down perforation, oil cylinder (3) top is inserted with can stretch into the subsurface agitator of oil water mixture (4) via this to through hole, is also provided with to draw oil sheet (12) for drainage oil content in oil-recovery tank (5).

2. the device extracting oil from oil water mixture according to claim 1, is characterized in that, drawing oil sheet (12) with the angle of oil-recovery tank (5) diapire is acute angle.

3. the device extracting oil from oil water mixture according to claim 1, it is characterized in that, the beneath portions stretching out oil cylinder (3) at oil-recovery tank (5) is provided with leak oil line (6).

4. the device extracting oil from oil water mixture according to claim 3, is characterized in that, is provided with graduated cylinder (7) in leak oil line (6) below.

5. the device extracting oil from oil water mixture according to claim 1, is characterized in that, the inwall of oil cylinder (3) is also provided with the supporting (8) for supporting oil-recovery tank (5).

6. the device extracting oil from oil water mixture according to claim 1, it is characterized in that, oil cylinder (3) is provided with feed pipe (2), and feed pipe (2) is provided with stop valve (1).

7. the device extracting oil from oil water mixture according to claim 1, is characterized in that, oil cylinder (3) the side sidewall arranging oil-recovery tank (5) is also fixed with reinforcement (9).

8. the device extracting oil from oil water mixture according to claim 7, is characterized in that, reinforcement (9) is fixed on oil cylinder (3) outer wall by the bolt (10) that matches and nut (11).