CN112811516A

CN112811516A - Oil-water separation device

Info

Publication number: CN112811516A
Application number: CN202110354611.6A
Authority: CN
Inventors: 丁文芬
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-05-18

Abstract

The invention relates to an oil-water separation device, which effectively solves the problems that an oil layer is too thin and the height of an oil overflow port is difficult to control; the technical scheme for solving the problem is that the device comprises a box body with an upward opening, wherein the middle part of the box body is divided into a left chamber and a right chamber by a vertical partition plate; the left cavity and the right cavity are both provided with a liquid inlet pipe and a liquid outlet pipe, and the two liquid inlet pipes and the two liquid outlet pipes are respectively connected through a liquid inlet two-position three-way valve and a liquid outlet two-position three-way valve; when the liquid level of one chamber reaches a set height, the chamber starts to discharge liquid, and the other chamber starts to feed liquid; the left chamber is used for discharging liquid, and the right chamber is used for feeding liquid; the left chamber and the right chamber are internally provided with the oil spilling devices and the oil discharging ports, the thickness of an oil layer is increased in an oil storage mode so as to facilitate oil discharging, and meanwhile, the height of the oil spilling ports can be controlled so as to prevent excessive water from being discharged.

Description

Oil-water separation device

Technical Field

The invention relates to the field of sewage treatment, in particular to an oil-water separation device.

Background

A large amount of oily sewage is often generated in the production process of various industries such as petroleum, chemical industry, metallurgy, manufacturing and the like, and oil removal treatment is needed for treating and recycling the sewage; prevent oil pollution, bacterial breeding, blockage of drainage pipelines and the like. The general sewage is settled, coarse filtered and fine filtered, and then the oil layer is separated by using a separation device.

The oil-water separator used at present is roughly divided into two types, one is that a rotary oil scraping device is used for scraping oil into an oil groove; the mode is suitable for scraping sewage with a thicker oil layer, and can not be used for a thin oil layer; the other method is to control the liquid level height of the sewage, then discharge the oil layer through an oil overflow port at the upper part, and discharge clean water through a water discharge port at the lower part, but the method is simple and effective, but the liquid level height needs to be controlled, so that the problem that the oil cannot be overflowed when the liquid level is low or the water content in the overflowed oil is high when the liquid level is high is solved; in addition, the equipment generally adopts continuous sewage inlet and outlet, and when an oil layer is thin, the content of the sewage flowing out of an oil overflow port is large; it is also necessary to separate the oil-water mixture again in the oil tank. In view of the above, there is a need to solve the above problems.

Disclosure of Invention

In view of the above situation, the present invention provides an oil-water separator, which can effectively solve the problems of too thin oil layer and difficulty in controlling the height of oil overflow port.

The technical scheme for solving the problem is that the device comprises a box body with an upward opening, wherein the middle part of the box body is divided into a left chamber and a right chamber by a vertical partition plate; the left cavity and the right cavity are both provided with a liquid inlet pipe and a liquid outlet pipe, and the two liquid inlet pipes and the two liquid outlet pipes are respectively connected through a liquid inlet two-position three-way valve and a liquid outlet two-position three-way valve; when the liquid level of one chamber reaches a set height, the chamber starts to discharge liquid, and the other chamber starts to feed liquid; the left chamber is used for discharging liquid, and the right chamber is used for feeding liquid; the left chamber and the right chamber are internally provided with an oil spilling device and an oil discharging port;

the oil spilling device comprises a cross rod, floating blocks are fixed at the left end and the right end of the cross rod, a guide rod capable of moving up and down penetrates through the middle of the cross rod, a nut is connected to the upper end of the guide rod in a threaded manner, and a shell is connected to the lower end of the guide rod; the interior of the shell is hollow, and the upper end of the shell is connected with a plurality of vertical pipes communicated with the interior of the shell; the lower end of the shell is connected to an oil drain port in the cavity corresponding to the shell through a hose; the middle part of the guide rod is provided with a wedge-shaped block, the transverse rod is provided with a limiting rod which can move left and right and clamp the wedge-shaped block, and the other end of the limiting rod is connected with a rope fixed in the cavity; after the liquid level rises to a set height, the rope is tensioned, so that the limiting rod is separated from the tensioning wedge block, and the shell can descend relative to the cross rod;

the middle parts of the left chamber and the right chamber are respectively provided with a transverse baffle, and the shell can be supported by the baffles after the liquid level drops to be lower than the baffles, so that the guide rod moves upwards relative to the cross rod and the limiting rod clamps the wedge-shaped block again.

The upper end inner wall of left side cavity and right cavity on all install a level sensor, two three-way valves of feed liquor and two three-way valves of play liquid are the solenoid valve, set up on the lateral wall of box in controlling two three-way valves of feed liquor and two three-way valve controllers of play liquid, after the liquid level in one of them cavity reachd the level sensor height, the drain pipe in this cavity can be opened to the controller to feed liquor pipe in this cavity is closed.

The oil discharge port is positioned on the side wall of the lower end of the left chamber and the right chamber.

The wedge-shaped block is in a circular table shape with a downward big end, the left side and the right side of each guide rod are respectively provided with a limiting rod, one end of each limiting rod, which is close to the guide rod, is fixedly provided with a semicircular arc-shaped plate, the concave surface of each arc-shaped plate faces the guide rod, a fixed block corresponding to each limiting rod is arranged on each cross rod, each limiting rod penetrates through the fixed block and can move left and right along the fixed block, and a pressure spring positioned between the fixed rod and the arc-shaped plate is sleeved on each; one end of the rope is connected to one end, far away from the guide rod, of the limiting rod, and the other end of the rope is fixed on the baffle.

The gravity of the shell is larger than the buoyancy of the shell.

The middle part of the cross rod is provided with a circular ring corresponding to each rope, and the rope passes through the circular ring to change the direction.

The invention can increase the thickness of the oil layer by the oil storage way to facilitate oil discharge, and can control the height of the oil overflow port to avoid excessive water from being discharged.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a front sectional view of the present invention (left chamber full of water).

Fig. 3 is a front sectional view of the present invention (left chamber starting to drain).

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a perspective view of the case.

Fig. 6 is a perspective view of the oil spilling device.

Fig. 7 is a schematic diagram of a solenoid valve.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 7, the present invention comprises a box body 1 with an upward opening, wherein the middle part of the box body 1 is divided into a left chamber 2 and a right chamber 3 by a vertical partition plate; the left cavity 2 and the right cavity 3 are both provided with a liquid inlet pipe 4 and a liquid outlet pipe 5, and the two liquid inlet pipes 4 and the two liquid outlet pipes 5 are respectively connected through a liquid inlet two-position three-way valve 6 and a liquid outlet two-position three-way valve 7; when the liquid level of one chamber reaches a set height, the chamber starts to discharge liquid, and the other chamber starts to feed liquid; the left chamber 2 is used for discharging liquid, and the right chamber 3 is used for feeding liquid; the left chamber 2 and the right chamber 3 are both internally provided with an oil spilling device 9 and an oil discharging port 8;

the oil spilling device 9 comprises a cross bar 901, floating blocks 902 are fixed at the left end and the right end of the cross bar 901, a guide rod 903 capable of moving up and down penetrates through the middle of the cross bar 901, a nut 904 is connected to the upper end of the guide rod 903 in a threaded manner, and a shell 905 is connected to the lower end of the guide rod 903 in a threaded manner; the shell 905 is hollow, and the upper end of the shell 905 is connected with a plurality of vertical pipes 906 communicated with the interior of the shell; the lower end of the housing 905 is connected to an oil drain port 8 in a corresponding chamber through a hose; a wedge-shaped block 907 is arranged in the middle of the guide rod 903, a limiting rod 908 capable of moving left and right and clamping the wedge-shaped block 907 is arranged on the cross rod 901, and a rope 909 fixed in the cavity is connected to the other end of the limiting rod 908; after the liquid level rises to a set height, the rope 909 is tensioned, so that the limiting rod 908 is separated from the tensioning wedge 907, and the shell 905 descends relative to the cross bar 901;

the middle parts of the left chamber 2 and the right chamber 3 are both provided with a transverse baffle 10, and after the liquid level is lowered to be lower than the baffle 10, the shell 905 can be supported by the baffle 10, so that the guide rod 903 moves upwards relative to the cross rod 901, and the wedge 907 is clamped by the limiting rod 908 again.

In order to realize that when the liquid level of one chamber reaches a set height, the chamber starts to discharge liquid, and the other chamber starts to feed liquid; the upper end inner wall of left side cavity 2 and right cavity 3 on all install a level sensor 11, two three-way valves 6 of feed liquor are the solenoid valve with two three-way valves 7 of play liquid, set up on the lateral wall of box 1 and control two three-way valves 6 of feed liquor and two three-way valve 7 controllers 12 of play liquid, after 11 high, the liquid level in one of them cavity reachd level sensor, controller 12 can open drain pipe 5 in this cavity to close feed liquor pipe 4 in this cavity.

In order to prevent the liquid inlet pipe 4 from disturbing the oil layer, the lower end of the liquid inlet pipe 4 is 5-10CM away from the bottom of the box body 1, and the upper end of the liquid inlet pipe 4 is 5-10CM away from the bottom of the box body 1.

In order to facilitate oil drainage, the oil drainage port 8 is formed in the lower side walls of the left and

right chambers

2 and 3.

In order to realize the moving reset of the limiting rods 908 and the clamping of the wedge-shaped block 907, the wedge-shaped block 907 is in a circular truncated cone shape with a downward large end, the left side and the right side of each guide rod 903 are respectively provided with one limiting rod 908, one end of each limiting rod 908 close to the guide rod 903 is fixedly provided with a semicircular arc plate 910, the concave surface of each arc plate 910 faces the guide rod 903, a fixing block 911 corresponding to each limiting rod 908 is arranged on each cross rod 901, the limiting rods 908 transversely penetrate through the fixing blocks 911 and can move left and right along the fixing blocks 911, and a pressure spring 912 positioned between the fixing rods and the arc plates 910 is sleeved on; one end of the rope 909 is connected to the end of the stopper 908 away from the guide rod 903, and the other end of the rope 909 is fixed to the stop 10.

In order to control and avoid that the housing 905 affects the buoyancy of the entire oil spilling device 9, the weight of the housing 905 is greater than its own buoyancy.

In order to facilitate the application of force to the ropes 909, the limiting rod 908 is tightened, a circular ring corresponding to each rope 909 is arranged in the middle of the cross bar 901, and the ropes 909 pass through the circular rings to change directions.

When the device is used for the first time, the middle inlet of the liquid inlet two-position three-way valve 6 is connected to a storage tank of liquid to be treated through a pipeline, the middle outlet of the liquid outlet two-position three-way valve 7 is connected to a clean water tank through a pipeline, and oil discharge ports 8 on the left chamber and the right chamber are connected to an oil storage tank through pipelines.

Then the whole device can be opened to work; firstly, the positions of the liquid inlet two-position three-way valve 6 and the liquid outlet two-position three-way valve 7 are in a mutually staggered state, namely when the liquid inlet pipe 4 of the left cavity 2 is communicated, the liquid outlet of the left cavity 2 is closed, the liquid inlet pipe 4 of the right cavity 3 is closed, and the liquid outlet pipe 5 of the right cavity 3 is opened; that is, simply, the left chamber 2 is in the liquid inlet state, and the right chamber 3 is in the liquid discharge state.

Therefore, the liquid to be treated enters the left chamber 2 from the pipeline through the liquid inlet pipe 4; and the liquid level in the left chamber 2 is gradually raised; the left chamber 2 has a certain volume, so that the liquid to be treated with a certain height can be stored; and as more and more liquid to be treated is collected, the oil layer in the left chamber 2 becomes thicker and thicker.

In this state, the oil spilling device 9 in the left chamber 2 is now in the state shown in fig. 2 and 4; at this time, the wedge 907 in the middle of the guide rod 903 is blocked by the arc block at the end of the limiting section, and the shell 905 is in a close state relative to the cross rod 901; the self weight of the casing 905 is greater than its own buoyancy, so the whole casing 905 is below the liquid level, and under the supporting action of the floating block 902 and the cross bar 901, the upper ends of a plurality of vertical pipes 906 uniformly distributed on the casing 905 are far higher than the liquid level, so the vertical pipes 906 cannot discharge oil.

Then, the liquid level continues to rise and gradually approaches the liquid level sensor 11, at this time, the rope 909 connected between the baffle 10 and the limiting rod 908 is tensioned, so that the pressure spring 912 on the limiting rod 908 is compressed, meanwhile, the arc-shaped block at the end part of the limiting rod 908 is far away from the wedge-shaped block 907 on the guide rod 903, so that the arc-shaped block is separated from the wedge-shaped block 907, at this time, the guide rod 903 is not limited, therefore, the whole housing 905, the guide rod 903 and the vertical pipe 906 sink under the action of self weight, and the nut 904 which descends to the upper end of the guide rod 903 is blocked by the; the entire housing 905 is not being lowered at this time. The upper end of the standpipe 906 will now be below the level of the liquid surface; through adjusting nut 904, can adjust the difference in height of standpipe 906 upper end distance liquid level to the sewage that adapts to different oil content.

Meanwhile, when the liquid level reaches the position of the liquid level sensor 11 (namely, the set height), the controller 12 sends out an instruction to simultaneously switch the states of the two liquid inlet three-way valve 6 and the two liquid outlet three-way valve 7; the left chamber 2 begins to discharge liquid and the right chamber 3 begins to feed liquid.

When the left chamber 2 discharges liquid, the oil spilling device 9 spills oil, and an oil layer on the surface of sewage enters the shell 905 through the vertical pipe 906 and is discharged into the oil storage tank through the hose via the oil discharge port 8; the separation of oil layers is realized.

Therefore, in the process, the liquid level continuously drops, and the vertical pipe 906 vertically keeps constant liquid level difference with the liquid level, so that stable oil discharge is realized; after the oil is drained for a certain time, the oil layer on the liquid surface is basically drained; the liquid level in the left chamber 2 is gradually lower than the height of the baffle 10; at the upper moment, the lower end of the shell 905 is blocked by the baffle 10, so that the shell 905 does not descend; of course, the upper end of the standpipe 906 will also be above the liquid level and will not be drained. At the same time, the float 902 is not receiving buoyancy due to the falling liquid level. Therefore, under the action of the self weight of the left and right floating blocks 902 and the cross bar 901, the cross bar 901 is driven to move downwards along the guide rod 903, so that the wedge-shaped block 907 at the end part of the guide rod 903 upwards penetrates through the arc-shaped plate 910 at the end part of the limiting rod 908 on the cross bar 901; thus, when the arcuate plate 910 again catches the wedge 907, the float 902 can move the housing 905 upward and the upper end of the vertical tube 906 exceeds the liquid level when the liquid level rises next time.

When the liquid level of the left cavity 2 gradually drops to a liquid outlet pipe 5 lower than the bottom of the left cavity 2, the left cavity 2 is still; because the oil layer on the liquid surface can not be completely removed, a small amount of oil layer flows out when the liquid surface is lowered to be close to the upper end of the liquid outlet pipe 5; the oil layer has little quantity, and the subsequent treatment of clear water is not influenced.

In a similar way, the right chamber 3 is consistent with the left chamber 2 in process and is matched with the left chamber 2, so that the continuous treatment of separating the oil layer is realized.

The general principle of the invention is as follows:

the left chamber and the right chamber alternately add liquid and discharge liquid. When the liquid level of the left chamber reaches a certain height, the oil receiving device descends to begin oil discharge; and simultaneously, the sewage which does not contain oil in the left side chamber is discharged. The oil receiving device can only descend to a certain height and reset after being blocked. And then water and oil storage are started.

The benefits and design points of the invention are as follows:

1. in the process of water storage, oil is stored, so that the oil layer becomes thick, oil drainage is facilitated, and the amount of overflowed water is reduced.

2. When oil is discharged, the oil overflow port can keep a constant liquid level difference with the liquid level; through adjusting nut 904, can adjust the difference in height of standpipe 906 upper end distance liquid level to the sewage that adapts to different oil content.

3. The two chambers work alternately to realize continuous uninterrupted work.

4. The oil spilling device 9 can discharge oil when falling and does not discharge oil when rising; avoiding oil leakage in the process of oil storage.

Claims

1. An oil-water separation device comprises a box body (1) with an upward opening, and is characterized in that the middle part of the box body (1) is divided into a left chamber (2) and a right chamber (3) through a vertical partition plate; the left cavity (2) and the right cavity (3) are both provided with a liquid inlet pipe (4) and a liquid outlet pipe (5), and the two liquid inlet pipes (4) and the two liquid outlet pipes (5) are respectively connected through a liquid inlet two-position three-way valve (6) and a liquid outlet two-position three-way valve (7); when the liquid level of one chamber reaches a set height, the chamber starts to discharge liquid, and the other chamber starts to feed liquid; when the left chamber (2) discharges liquid, the right chamber (3) feeds liquid; the left chamber (2) and the right chamber (3) are internally provided with an oil spilling device (9) and an oil discharging port (8);

the oil spilling device (9) comprises a cross rod (901), floating blocks (902) are fixed at the left end and the right end of the cross rod (901), a guide rod (903) capable of moving up and down penetrates through the middle of the cross rod (901), a nut (904) is connected to the upper end of the guide rod (903) in a threaded mode, and a shell (905) is connected to the lower end of the guide rod (903); the shell (905) is hollow, and the upper end of the shell (905) is connected with a plurality of vertical pipes (906) communicated with the interior of the shell; the lower end of the shell (905) is connected to an oil drain port (8) in the cavity corresponding to the shell through a hose; a wedge-shaped block (907) is arranged in the middle of the guide rod (903), a limiting rod (908) capable of moving left and right and clamping the wedge-shaped block (907) is arranged on the cross rod (901), and a rope (909) fixed in the cavity is connected to the other end of the limiting rod (908); after the liquid level rises to a set height, the rope (909) is tensioned, so that the limiting rod (908) is separated from the tensioning wedge block (907), and the shell (905) descends relative to the cross rod (901);

the middle parts of the left chamber (2) and the right chamber (3) are respectively provided with a transverse baffle (10), and after the liquid level is lowered to be lower than the baffles (10), the shell (905) can be supported by the baffles (10), so that the guide rod (903) moves upwards relative to the cross rod (901) and the limiting rod (908) clamps the wedge block (907) again.

2. The oil-water separation device as claimed in claim 1, wherein the inner walls of the upper ends of the left chamber (2) and the right chamber (3) are respectively provided with a liquid level sensor (11), the two-position liquid inlet three-way valve (6) and the two-position liquid outlet three-way valve (7) are both solenoid valves, the side wall of the box body (1) is provided with a controller (12) for controlling the two-position liquid inlet three-way valve (6) and the two-position liquid outlet three-way valve (7), and after the liquid level in one chamber reaches the height of the liquid level sensor (11), the controller (12) can open the liquid outlet pipe (5) in the chamber and close the liquid inlet pipe (4) in the chamber.

3. The oil-water separator according to claim 1, wherein the lower end of the liquid inlet pipe (4) is spaced from the bottom (5) - (10) CM of the tank (1), and the upper end of the liquid inlet pipe (4) is spaced from the bottom (5) - (10) CM of the tank (1).

4. The oil-water separator according to claim 1, wherein the oil drain port (8) is formed in the lower side walls of the left and right chambers (2, 3).

5. The oil-water separation device as claimed in claim 1, wherein the wedge-shaped block (907) is a circular truncated cone with a downward large end, the left side and the right side of each guide rod (903) are respectively provided with a limiting rod (908), a semicircular arc-shaped plate (910) is fixed at one end of each limiting rod (908) close to each guide rod (903), the concave surface of each arc-shaped plate (910) faces the guide rods (903), a fixing block (911) corresponding to each limiting rod (908) is arranged on each cross rod (901), each limiting rod (908) penetrates through each fixing block (911) and can move left and right along each fixing block (911), and a pressure spring (912) positioned between each fixing rod and each arc-shaped plate (910) is sleeved on each limiting rod (908); one end of the rope (909) is connected to one end of the limiting rod (908) far away from the guide rod (903), and the other end of the rope (909) is fixed on the baffle (10).

6. The separator as claimed in claim 1, wherein the weight of the housing (907) is greater than its own buoyancy.

7. The oil-water separator according to claim 1, wherein the middle of the cross bar (901) is provided with a circular ring corresponding to each rope (909), and the rope (909) is reversed through the circular ring.