CN218742499U - Solid-liquid separation system for plate rolling waste liquid - Google Patents

Abstract

The utility model provides a solid-liquid separation system for plate rolling waste liquid, which comprises a liquid collecting tank, a liquid collecting tank and a liquid collecting tank, wherein the liquid collecting tank is used for storing rolling liquid in a centralized way; the magnetic separator is used for purifying and adsorbing scrap iron in rolling liquid; a centrifuge for separating a solid phase and a liquid phase of a rolling liquid; the liquid outlet end of the liquid collecting tank is connected with the liquid inlet end of the magnetic separator, the liquid outlet end of the magnetic separator is connected with the feed inlet of the centrifuge, and the liquid phase discharge end of the centrifuge is connected with the liquid inlet end of the liquid collecting tank to form circulating filtration; the utility model discloses centrifuge on current basis has optimized the mode of the rolling waste liquid of panel, and conventional single centrifuge separation mode handling capacity is little, and centrifuge work load is big, can't satisfy the panel rolling needs of the big discharge capacity of mill, through increasing the magnetic separation machine to set up the overflow valve by the magnetic separation machine and found circulating filtration, can satisfy the processing needs of big discharge capacity, improved separation efficiency, and reduced centrifuge's work load.

Description

Solid-liquid separation system for plate rolling waste liquid

Technical Field

The utility model belongs to the technical field of centrifuge separation system technique and specifically relates to a solid-liquid separation system of rolling waste liquid of panel.

Background

The plate rolling waste liquid generated in the processing process of metal plates such as steel plates, iron plates and the like is a mixture of emulsion and metal scraps generated in the rolling process, and the rolling principle is as follows: in the process of rolling the plate, the emulsion is sprayed on a metal plate such as a high-temperature steel plate and an iron plate and a roller, so that the equilibrium state of the emulsion is destroyed, oil and water are quickly separated, and the residual water and inverse emulsion formed by the oil are uniformly diffused on the surface of the metal while cooling, thereby forming an oil film.

The plate rolling waste liquid after the rolling process cannot be directly discharged, and needs to be separated into a solid phase and a liquid phase, so that the separated emulsion meets the discharge standard after being treated and is discharged, and meanwhile, the separated solid-phase metal scraps can be recycled. The existing plate rolling waste liquid is directly separated into a solid phase and a liquid phase by a centrifugal machine, the solid phase in the plate rolling waste liquid comprises magnetic waste residues (iron filings and the like) and non-magnetic oil sludge and other solid wastes with strong bonding property, the two solid phases are simultaneously treated by the centrifugal machine under the action of centrifugal force, the working load of an instrument is large, in the obtained solid phase, the iron filings and the like are mixed with the oil sludge, and the resource recovery of the iron filings and the like is difficult to realize.

SUMMERY OF THE UTILITY MODEL

This application is directed against the shortcoming among the above-mentioned prior production technique, provides a solid-liquid separation system of the rolling waste liquid of panel rational in infrastructure, through setting up reasonable overflow circulation route, sets up the magnetic separation part before centrifuge's the entering route, filters the magnetic waste residue in advance, reduces centrifuge's work load, realizes the resourceful recovery of magnetic waste residue to realize simultaneously, the panel waste liquid separation processing demand of the bigger discharge capacity of sustainable treatment.

The utility model discloses the technical scheme who adopts as follows:

a solid-liquid separation system of plate rolling waste liquid comprises:

the liquid collecting tank is used for storing the rolling liquid in a centralized manner;

the magnetic separator is used for purifying and adsorbing scrap iron in rolling liquid;

a centrifuge for separating a solid phase and a liquid phase of a rolling liquid;

the liquid outlet end of the liquid collecting tank is connected to the liquid inlet end of the magnetic separator, the liquid outlet end of the magnetic separator is connected to the feed inlet of the centrifuge, and the liquid phase discharge end of the centrifuge is connected to the liquid inlet end of the liquid collecting tank to form circulating filtration.

Furthermore, liquid and materials are lifted between the magnetic separator and the liquid collecting tank through a pump component.

Furthermore, the discharge end of the magnetic separator is provided with two branches, including an overflow branch and a filtering branch, the overflow branch is communicated with the liquid collecting tank through an overflow valve, and the filtering branch is communicated with the feed end of the centrifuge.

Further, the magnetic separator is an automatic magnetic separator.

Further, the centrifuge is a solid-liquid two-phase centrifuge.

Further, the collecting tank includes the barrel, and barrel inside branch is equipped with wastewater disposal basin and water filtering ponds, and wastewater disposal basin one side intercommunication sets up the outlet pipe, and water filtering ponds one side intercommunication sets up the inlet tube, and barrel outside top-down sets up the people's ladder, and the barrel middle part sets up the manhole.

The beneficial effects of the utility model are as follows:

compared with the prior art that solid-liquid separation is directly carried out on plates through a centrifugal machine, the prior art needs to separate magnetic waste residues (containing iron and the like) and non-magnetic waste residues at the same time, the accommodating space of the inner cavity of a rotary drum of the centrifugal machine is limited, and when waste liquid with more solid phases is treated at the same time, the existing separation mode has low efficiency and cannot meet the treatment requirements of large discharge capacity and continuity of enterprises.

The utility model provides a solid-liquid separation system of rolling waste liquid of panel sets up the magnetic separation part through setting up reasonable overflow circulation route at centrifuge before getting into centrifugal path, filters the magnetism waste residue in advance, realizes the resourceful recovery of magnetism waste residue, reduces centrifuge's work load to realize simultaneously, the panel waste liquid separation processing demand of the bigger discharge capacity of sustainable treatment.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a block diagram of the system operation of the present invention.

Wherein: 1. a liquid collecting tank; 2. a magnetic separator; 3. a centrifuge; 4. an overflow branch; 5. filtering the branch; 6. an overflow valve; 7. a pump component; 8. a water outlet pipe; 9. a water inlet pipe; 10. a human ladder; 11. a manhole.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 2, a solid-liquid separation system for a plate rolling mill effluent includes:

a liquid collecting tank 1 for storing the rolling liquid in a concentrated manner;

in this embodiment, the liquid collecting tank 1 is an industrial waste water collecting tank, and includes a cylinder, and a water filtering tank and a wastewater tank separately disposed inside the cylinder; as shown in fig. 1, the waste water tank is communicated with the right side wall of the cylinder body and is provided with a water outlet pipe 8, the waste water tank is used for canning the plate waste water, and is communicated with an external solid-liquid separation system through the water outlet pipe 8; the water filtering pool is communicated with the left wall of the cylinder body and is provided with a water inlet pipe 9 for collecting purified water after solid-liquid separation; meanwhile, the cylinder body is provided with a man ladder 10 from bottom to top for the overhaul and maintenance of workers; the middle part of barrel sets up manhole 11, and the personnel worker can get into the barrel inside and look over, overhaul.

In some embodiments, a centrifuge 3 for separating the solid phase and the liquid phase of the rolling liquid; in this embodiment, the centrifuge 3 is preferably a horizontal solid-liquid two-phase centrifuge 3, and the operating principle is that the rotating drum and the spiral flood dragon rotate coaxially at a high speed, a rotation speed difference exists between the rotating drum and the spiral flood dragon, so that centrifugal force is generated, feed liquid enters the spiral flood dragon through a pipeline, and a liquid phase overflows out through one side of the flood dragon due to light weight; and the solid phase is attached to the inner wall of the rotary drum by centrifugal force due to large weight and is discharged to one side of the rotary drum at the small end through the inner slag discharge plate, so that the separation of the solid phase and the liquid phase is realized.

The liquid outlet end of the liquid collecting tank 1 is connected with the liquid inlet end of the magnetic separator 2, the liquid outlet end of the magnetic separator 2 is connected with the feed inlet of the centrifuge 3, and the liquid phase discharge end of the centrifuge 3 is connected with the liquid inlet end of the liquid collecting tank 1 to form circulating filtration.

A magnetic separator 2 for purifying and adsorbing scrap iron in the rolling liquid; liquid and material are lifted between the magnetic separator 2 and the liquid collecting tank 1 through the pump component 7. The pump member 7 is in this embodiment optionally a water pump for lifting the liquid material in the conduit.

In some embodiments, the discharge end of the magnetic separator 2 is provided with two branches, including an overflow branch 4 and a filtering branch 5, the overflow branch 4 is communicated with the sump 1 through an overflow valve 6, and the filtering branch 5 is communicated with the feed end of the centrifuge 3.

In some embodiments, the magnetic separator 2 is an automatic magnetic separator; the method comprises but is not limited to the use of a DCX type wet full-automatic magnetic separator which is widely applied to iron separation in liquid or slurry in the industries of food, medicine, chemical engineering and the like. In particular to weak magnetic iron with 10-15000 meshes.

It should be noted that the magnetic separator 2 is used in this embodiment to adsorb and filter 80% of iron slag in the circulating system, so that the magnetic slag is basically removed from the waste liquid entering the centrifuge 3 for solid-liquid separation, and only the non-magnetic slag is retained, for example, after the plate rolling, steel plate rolling or iron plate rolling is performed, the mixed waste liquid is intensively poured into the liquid collecting tank 1, and the waste liquid contains metal slag materials in addition to the conventional slag components, so that on one hand, separation is required to meet the discharge requirement, and on the other hand, resource recycling is required.

Magnetic separation machine 2 in this embodiment, its structure mainly comprises the toper filter house on upper portion and the magnetic filtration portion of lower part, the demagnetization sediment principle of toper filter house is like magnet for setting up filtering material, the filtering layer filters, the filtrate on upper portion enters into the magnetic filtration portion of lower part, the magnetic filtration portion includes the outer barrel of cylindricality, the center sets up the magnetism roller in the barrel, the periphery along the magnetism roller sets up the rubber compression roller, liquid material top-down gets into between the two, the turning to of magnetism roller is opposite with the flow direction of liquid material, consequently when liquid material flows down, the magnetism waste residue is upwards driven by the magnetism roller, be detained in the collecting vat at middle part in the bucket, liquid material after the filtration then flows to 3 one side through the liquid outlet flow direction of bottom centrifuge.

The utility model discloses a theory of operation: compared with the existing single centrifuge 3, the liquid collecting tank 1 is used for storing the waste water and the purified water in a centralized way, one end of the waste liquid tank communicated with the liquid collecting tank is lifted to the magnetic separator 2 through a water pump to separate the magnetic waste residues, about 80 percent of the magnetic waste residues are basically removed from the separated liquid, the state of the non-magnetic waste residues is basically achieved, and the residual solid phase substances enter the subsequent separation; two paths are branched from the liquid outlet end of the magnetic separator 2, one path is an overflow branch 4 and is communicated with a waste liquid pool through an overflow valve 6 in a backflow mode, the other path is communicated with the centrifuge 3 through a water pump lifting mode, and the arrangement of one side of the overflow branch 4 is used for avoiding overload of the work load of the centrifuge 3 under the work of large displacement; the purified liquid filtered by one side of the centrifuge 3 flows back to the water filtering pool in the liquid collecting tank 1.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims (6)

1. The utility model provides a solid-liquid separation system of panel rolling waste liquid which characterized in that includes:

a liquid collecting tank (1) for storing the rolling liquid in a concentrated manner;

a magnetic separator (2) for purifying and adsorbing scrap iron in the rolling liquid;

a centrifuge (3) for separating a solid phase and a liquid phase of a rolling liquid;

the liquid outlet end of the liquid collecting tank (1) is connected to the liquid inlet end of the magnetic separator (2), the liquid outlet end of the magnetic separator (2) is connected to the feed inlet of the centrifuge (3), and the liquid phase discharge end of the centrifuge (3) is connected to the liquid inlet end of the liquid collecting tank (1) to form circulating filtration.

2. The solid-liquid separation system for the plate rolling mill effluent as claimed in claim 1, wherein: liquid and material are lifted between the magnetic separator (2) and the liquid collecting tank (1) through a pump component (7).

3. The solid-liquid separation system for the plate rolling mill effluent according to claim 1, wherein: the discharge end of the magnetic separator (2) is provided with two branches, including an overflow branch (4) and a filtering branch (5), the overflow branch (4) is communicated with the liquid collecting tank (1) through an overflow valve (6), and the filtering branch (5) is communicated with the feed end of the centrifuge (3).

4. The solid-liquid separation system for the plate rolling mill effluent as claimed in claim 1, wherein: the magnetic separator (2) is an automatic magnetic separator.

5. The solid-liquid separation system for the plate rolling mill effluent as claimed in claim 1, wherein: the centrifugal machine (3) is a solid-liquid two-phase centrifugal machine (3).

6. The solid-liquid separation system for the plate rolling mill effluent as claimed in claim 1, wherein: the liquid collecting tank (1) comprises a barrel body, a wastewater pool and a water filtering pool are arranged inside the barrel body, a water outlet pipe (8) is arranged on one side of the wastewater pool in a communicated mode, a water inlet pipe (9) is arranged on one side of the water filtering pool in a communicated mode, a ladder (10) is arranged on the outer side of the barrel body from top to bottom, and a manhole (11) is arranged in the middle of the barrel body.

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