CN113060796A - Sewage oil reservoir remove device - Google Patents

Abstract

The invention relates to a sewage oil layer removing 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; vertical branch pipes are arranged in the two cavities, and the upper ends of the two branch pipes are connected together through a two-position four-way valve; the lower end of each branch pipe is provided with a one-way liquid outlet valve, the side wall at the bottom of each branch pipe is provided with a suction port, each branch pipe is sleeved with a sleeve capable of moving up and down along the branch pipe, and the sleeve can be suspended in water; 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 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 by the oil storage mode of the oil storage device, so that oil can be discharged conveniently, the height of the oil spilling ports can be controlled, and excessive water is prevented from being discharged.

Description

Sewage oil reservoir remove device

Technical Field

The invention relates to the field of sewage treatment, in particular to a sewage oil layer removing 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 a device for removing a sewage oil layer, which can effectively solve the problems of too thin oil layer and difficulty in controlling the height of an 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; vertical branch pipes are arranged in the two cavities, and the upper ends of the two branch pipes are connected together through a two-position four-way valve; the lower end of each branch pipe is provided with a one-way liquid outlet valve, the side wall at the bottom of each branch pipe is provided with a suction port, each branch pipe is sleeved with a sleeve capable of moving up and down along the branch pipe, and the sleeve can be suspended in water; 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 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.

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; two interfaces at the upper end of the two-position four-way valve are respectively connected with the suction pump and the raw material tank, and two interfaces at the lower end of the two-position four-way valve are respectively connected with the upper ends of the two branch pipes; the upper end inner walls of the left chamber and the right chamber are respectively provided with a liquid level sensor, the side wall of the box body is provided with a controller for controlling the two-position four-way valve, and after the liquid level in one chamber reaches the height of the liquid level sensors, the controller controls the two-position four-way valve to enable the branch pipe inside the two-position four-way valve to be communicated with the suction pump.

In order to enable the sleeve to be suspended in water, the upper half part of the sleeve is made of plastic materials, the lower half part of the sleeve is made of metal materials, and after the sleeve descends along with the liquid level, the suction opening in the branch pipe can be blocked.

In order to conveniently discharge the liquid in the box body, the bottoms of the left chamber and the right chamber are respectively provided with a main valve.

In order to facilitate oil drainage, the oil drainage port is positioned on the lower end side wall of the left chamber and the right chamber.

In order to realize the moving reset of the limiting rod and the clamping of the wedge-shaped block, the wedge-shaped block is in a round table shape with a downward big end, the left side and the right side of each guide rod are respectively provided with one limiting rod, one end of each limiting rod, which is close to the guide rod, is fixedly provided with a semicircular arc plate, the concave surface of each arc plate faces the guide rod, a fixed block corresponding to each limiting rod is arranged on each transverse rod, the limiting rods cross the fixed blocks and can move left and right along the fixed blocks, and pressure springs positioned between the fixed rods and the arc plates are sleeved on; 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.

In order to control and avoid the shell from influencing the buoyancy of the whole oil spilling device, the gravity of the shell is larger than the buoyancy of the shell.

In order to facilitate the force application of the ropes, the limiting rods are tensioned, the middle of each cross rod is provided with a circular ring corresponding to each rope, and the ropes pass through the circular rings to be reversed.

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 two-position four-way 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; vertical branch pipes 4 are arranged in the two cavities, and the upper ends of the two branch pipes 4 are connected together through a two-position four-way valve 5; the lower end of each branch pipe 4 is provided with a one-way liquid outlet valve 6, the side wall at the bottom of each branch pipe 4 is provided with a suction port 7, each branch pipe 4 is sleeved with a sleeve 13 capable of moving up and down along the branch pipe 4, and the sleeve 13 can be suspended in water; 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 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; two interfaces at the upper end of the two-position four-way valve 5 are respectively connected with the suction pump and the raw material tank, and two interfaces at the lower end of the two-position four-way valve 5 are respectively connected with the upper ends of the two branch pipes 4; the upper end inner walls of the left chamber 2 and the right chamber 3 are respectively provided with a liquid level sensor 11, the side wall of the box body 1 is provided with a controller 12 for controlling the two-position four-way valve 5, and after the liquid level in one chamber reaches the height of the liquid level sensor 11, the controller 12 controls the two-position four-way valve 5 to enable the branch pipe 4 in the two-position four-way valve to be communicated with the suction pump.

In order to enable the sleeve 13 to be suspended in water, the upper half part of the sleeve 13 is made of plastic, the lower half part of the sleeve 13 is made of metal, and the sleeve 13 can block the suction port 7 on the branch pipe 4 after descending along with the liquid level.

In order to drain the liquid in the tank 1, a main valve 14 is installed at the bottom of each of the left chamber 2 and the right chamber 3.

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 device is shown in figure 7, two interfaces at the upper end of the two-position four-way valve 5 are respectively connected to the suction pump and the storage tank, and two interfaces at the upper end of the two-position four-way valve 5 are respectively connected with the two branch pipes 4, so that the two branch pipes 4 can be respectively connected with the suction pump and the storage tank after the valve rod in the valve body is controlled to move by the controller 12; the states of the two branch pipes 4 can be switched, so that one chamber is fed with liquid, and the other chamber is discharged with liquid; and the oil outlets 8 on the left and right chambers are connected to an oil storage pool through pipelines.

Then the whole device can be opened to work; firstly, when the branch pipe 4 of the left chamber 2 is communicated with a storage tank of sewage to be treated, and simultaneously the branch pipe 4 of the right chamber 3 is communicated with a suction pump, referring to the attached drawing 2, at this time, because the liquid level in the right chamber 3 is lower, the sleeve 13 is positioned at the lower end of the branch pipe 4, at this time, because the lower end of the branch pipe 4 is the one-way liquid outlet valve 6, and the suction port 7 on the branch pipe 4 of the right chamber 3 is blocked by the sleeve 13, the right chamber 3 is in a state of not entering and not exiting.

The liquid to be treated enters the interior of the left chamber 2 from the pipeline through the branch 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 an instruction to switch the state of the two-position liquid inlet four-way valve 5; the branch pipe 4 of the left chamber 2 is connected with a suction pump, and the right chamber 3 is connected with a storage tank to start liquid feeding.

Because the sleeve 13 is a suspension device, the sleeve 13 in the left chamber 2 is at a high position at this time, and therefore the suction port 7 of the branch pipe 4 is not blocked, so that the liquid in the left chamber 2 can be sucked away from the suction port 7 through the branch pipe 4, when the left chamber 2 discharges liquid, the oil spilling device 9 also spills oil, and an oil layer on the surface of sewage enters the shell 905 through the vertical pipe 906 and then is discharged into the oil storage tank through the hose through 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 chamber 2 gradually drops to the position where the lower end of the sleeve 13 is contacted with the suction port 7, the sleeve 13 continuously drops for a small distance, and the suction port 7 is blocked and does not perform suction; because the sleeve 13 is in a suspension state, the liquid level is at the upper part of the middle part of the sleeve 13, and the suction port 7 is at the lower part of the middle part of the sleeve 13, the suction port 7 is still under the liquid level, a small amount of sewage is left in the left cavity 2, and the oil layer in the part of sewage is prevented from being sucked away and mixed into clean water.

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.

5. The liquid level of certain height can be preserved to the bottom of cavity, avoids remaining oil reservoir to be pumped away.

Claims (9)

1. A sewage oil layer removing 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; vertical branch pipes (4) are arranged in the two cavities, and the upper ends of the two branch pipes (4) are connected together through a two-position four-way valve (5); the lower end of each branch pipe (4) is provided with a one-way liquid outlet valve (6), the side wall at the bottom of each branch pipe (4) is provided with a suction port (7), each branch pipe (4) is sleeved with a sleeve (13) capable of moving up and down along the branch pipe (4), and the sleeve (13) can be suspended in water; 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) 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 bar (901).

2. A waste water layer removing device according to claim 1, wherein a transverse baffle (10) is arranged in the middle of each of the left chamber (2) and the right chamber (3), and after the liquid level drops below 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 limiting rod (908) clamps the wedge block (907) again.

3. The device for removing the sewage oil layer according to claim 1, wherein two interfaces at the upper end of the two-position four-way valve (5) are respectively connected with a suction pump and a raw material tank, and two interfaces at the lower end of the two-position four-way valve (5) are respectively connected with the upper ends of the two branch pipes (4); the upper end inner walls of the left chamber (2) and the right chamber (3) are respectively provided with a liquid level sensor (11), the side wall of the box body (1) is provided with a controller (12) for controlling the two-position four-way valve (5), and after the liquid level in one chamber reaches the height of the liquid level sensor (11), the controller (12) controls the two-position four-way valve (5) to enable the branch pipe (4) inside the two-position four-way valve to be communicated with the suction pump.

4. A sewage reservoir removal device according to claim 1, wherein the upper half of the sleeve (13) is made of plastic and the lower half is made of metal, and the sleeve (13) can block the suction port (7) of the branch pipe (4) after descending along with the liquid level.

5. A wastewater reservoir removal unit according to claim 1, characterized in that the bottoms of the left (2) and right (3) chambers are each provided with a main valve (14).

6. A dirty water reservoir removing apparatus as claimed in claim 1, wherein the drain port (8) is formed in the lower side walls of the left and right chambers (2, 3).

7. The sewage oil layer removing device according to claim 1, wherein 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 a limiting rod (908), one end of each limiting rod (908) close to each guide rod (903) is fixed with a semicircular arc-shaped plate (910), 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).

8. A sewerage reservoir removal apparatus according to claim 1, wherein the housing (907) is more buoyant than itself.

9. The wastewater oil layer removing device according to claim 1, characterized in that the middle of the cross bar (901) is provided with a circular ring corresponding to each rope (909), and the rope (909) passes through the circular ring to change direction.

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