CN112807833A - Treatment device and method for waste cleaning oil of metal piece - Google Patents
Treatment device and method for waste cleaning oil of metal piece Download PDFInfo
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- CN112807833A CN112807833A CN202011502101.0A CN202011502101A CN112807833A CN 112807833 A CN112807833 A CN 112807833A CN 202011502101 A CN202011502101 A CN 202011502101A CN 112807833 A CN112807833 A CN 112807833A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D36/003—Filters in combination with devices for the removal of liquids
- B01D36/008—Means to filter or treat the separated liquid
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Abstract
The invention provides a treatment device and a treatment method for waste cleaning oil of metal parts, and belongs to the technical field of metal part oil removal. The device comprises a vibrating screen 1; the upper layer and the middle layer of the vibrating screen 1 are separated by a first screen 2, the middle layer and the lower layer of the vibrating screen 1 are separated by a second screen 3, the aperture of the mesh of the first screen 2 is 150-250 meshes, and the aperture of the mesh of the second screen 3 is 350-450 meshes; the oil sludge collecting device 5 is communicated with an upper layer outlet of the vibrating screen 1; the grease collecting device 6 is communicated with the outlet of the middle layer of the vibrating screen 1; and the mixing and collecting device is communicated with the lower layer outlet of the vibrating screen 1. According to the invention, the vibrating screen 1 with the screens with different apertures is utilized, under the reciprocating vibration action of the vibrating screen 1, the oil sludge mixture, the grease and the residual liquid in the cleaning waste oil are separated, and meanwhile, the residual liquid collected in the mixing and collecting device contains the degreasing agent, so that the method can be used for the surface degreasing treatment of the metal piece again, is energy-saving and environment-friendly, and avoids resource waste.
Description
Technical Field
The invention relates to the technical field of metal piece oil removal, in particular to a treatment device and a treatment method for waste metal piece cleaning oil.
Background
In the electroplating industry, the surface of a metal part needs to be degreased before the metal part is electroplated. The surface degreasing treatment comprises removing impurities such as dust, grease, rust, dirt and the like attached to the surface of the part so as to increase the adhesive force of the metal coating during electroplating. If the grease on the metal surface is not removed completely in the surface degreasing treatment process, the adhesion of the surface coating is seriously affected, the coating quality of the electroplated part is further affected, and the defective rate of the electroplated part is increased.
In the prior art, liquid containing a metal degreasing agent is mostly used for degreasing the surface of a metal part, and the obtained cleaning waste liquid contains a large amount of oil sludge mixture, grease and residual degreasing agent. After the cleaning waste liquid is separated by the oil-water separator, the obtained cleaning waste oil is often directly discharged to a waste water treatment station. However, the oil sludge and grease in the cleaning waste oil can form higher COD, thereby greatly increasing the difficulty of wastewater treatment in a wastewater station; the cleaning waste oil is mixed with other waste water to generate more oil sludge mixture, and bacteria can die when the waste water is subjected to biochemical treatment, so that the waste water treatment efficiency is reduced. Meanwhile, the metal part cleaning waste oil also contains an oil removing agent, so that the waste of the oil removing agent can be caused if the oil removing agent is directly discharged, and the metal surface treatment cost is increased.
Disclosure of Invention
In view of the above, the present invention is directed to a waste metal cleaning apparatus and method. The device and the method provided by the invention can effectively separate oil sludge and grease in the metal piece cleaning waste oil, reduce the wastewater treatment pressure, and reuse the degreaser in the obtained residual mixed liquid.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a treatment device for waste cleaning oil of metal parts, which comprises a vibrating screen 1;
the vibrating screen 1 is divided into an upper layer, a middle layer and a lower layer which are communicated in sequence; the upper layer and the middle layer of the vibrating screen 1 are separated by a first screen 2, the middle layer and the lower layer of the vibrating screen 1 are separated by a second screen 3, the aperture of a mesh of the first screen 2 is 150-250 meshes, and the aperture of a mesh of the second screen 3 is 350-450 meshes; the top of the vibrating screen 1 is provided with a waste oil inlet 4;
the oil sludge collecting device 5 is communicated with an upper layer outlet of the vibrating screen 1;
the grease collecting device 6 is communicated with a middle layer outlet of the vibrating screen 1;
and the mixed liquid collecting device 7 is communicated with the lower layer outlet of the vibrating screen 1.
Preferably, the first screen 2 and the second screen 3 are made of stainless steel, PP or PE.
Preferably, the vertical distance between the first screen 2 and the second screen 3 is 150-250 mm.
Preferably, the top of the vibrating screen 1 is provided with a water inlet 8.
Preferably, the bottom of the lower layer of the vibrating screen 1 is provided with a damping spring 9.
The invention provides a method for treating waste metal part cleaning oil by using the treatment device, which comprises the following steps:
the metal piece cleaning waste oil enters a vibrating screen 1 from a waste oil inlet 4 to perform reciprocating vibration, first separation is performed at a first screen 2 to obtain an oil sludge mixture on the screen and the residual cleaning waste oil under the screen, and the oil sludge mixture enters an oil sludge collecting device 5;
carrying out second separation on the undersize residual cleaning waste oil at a second screen 3 to obtain oversize grease and undersize residual liquid, wherein the grease enters a grease collecting device 6; and the undersize residual liquid passes through a mixed liquid collecting device 7, and the residual liquid contains a metal degreasing agent.
Preferably, the flow speed of the metal piece cleaning waste liquid entering the vibrating screen 1 is 1.2-1.5 m/s, and the flow is 2.1-2.65 t/h.
Preferably, the vibration power of the vibrating screen 1 is 50-60 kW, the amplitude is 2-8 mm, and the vibration time is 6-10 min.
Preferably, after the reciprocating vibration, the method further comprises flushing the inside of the vibrating screen 1.
The invention provides a treatment device for waste cleaning oil of metal parts, which comprises a vibrating screen 1; the vibrating screen 1 is divided into an upper layer, a middle layer and a lower layer which are communicated in sequence; the upper layer and the middle layer of the vibrating screen 1 are separated by a first screen 2, the middle layer and the lower layer of the vibrating screen 1 are separated by a second screen 3, the aperture of the mesh of the first screen 2 is 150-250 meshes, and the aperture of the mesh of the second screen 3 is 350-450 meshes; the top of the vibrating screen 1 is provided with a waste oil inlet 4; the oil sludge collecting device 5 is communicated with an upper layer outlet of the vibrating screen 1; the grease collecting device 6 is communicated with the outlet of the middle layer of the vibrating screen 1; and the mixing and collecting device is communicated with the lower layer outlet of the vibrating screen 1. According to the invention, the vibrating screen 1 with the screens with different apertures is utilized, under the reciprocating vibration action of the vibrating screen 1, the oil sludge mixture, the grease and the residual liquid in the cleaning waste oil are separated, and meanwhile, the residual liquid collected in the mixing and collecting device contains the degreasing agent, so that the method can be used for the surface degreasing treatment of the metal piece again, is energy-saving and environment-friendly, and avoids resource waste. Furthermore, the processing device provided by the invention has the advantages of simple structure and low cost, and is suitable for industrial application.
Drawings
FIG. 1 is a schematic structural diagram of a waste oil treatment device for cleaning metal parts, which is disclosed by the invention, wherein the waste oil treatment device comprises a vibrating screen 1, a first screen 2, a second screen 3, a waste oil inlet 4, a sludge collecting device 5, a grease collecting device 6, a mixed liquid collecting device 7, a water inlet 8, a damping spring 9, a cleaning waste oil storage device 10 and a pump 11.
Detailed Description
The invention provides a treatment device for waste cleaning oil of metal parts, which comprises a vibrating screen 1;
the vibrating screen 1 is divided into an upper layer, a middle layer and a lower layer which are communicated in sequence; the upper layer and the middle layer of the vibrating screen 1 are separated by a first screen 2, the middle layer and the lower layer of the vibrating screen 1 are separated by a second screen 3, and the mesh aperture of the first screen 2 is larger than that of the second screen 3; the top of the vibrating screen 1 is provided with a waste oil inlet 4;
the oil sludge collecting device 5 is communicated with an upper layer outlet of the vibrating screen 1;
the grease collecting device 6 is communicated with a middle layer outlet of the vibrating screen 1;
and the mixed liquid collecting device 7 is communicated with the lower layer outlet of the vibrating screen 1.
The invention provides a processing device for waste metal part cleaning oil, which comprises a vibrating screen 1. In the invention, the vibrating screen 1 is divided into an upper layer, a middle layer and a lower layer which are communicated in sequence. In the invention, the upper layer and the middle layer of the vibrating screen 1 are separated by a first screen 2, and the middle layer and the lower layer of the vibrating screen 1 are separated by a second screen 3; the mesh aperture of the first screen 2 is 150-250 meshes, preferably 180-220 meshes, and further preferably 200 meshes; the mesh aperture of the second screen 3 is 350-450 meshes, preferably 380-420 meshes, and more preferably 400 meshes. In the invention, the material of the vibrating screen 1 is preferably stainless steel, and the material of the first screen 2 and the second screen 3 is independently preferably one or more of stainless steel, PE or PP.
In the present invention, the vertical distance between the first screen 2 and the second screen 3 is preferably 150 to 250mm, more preferably 180 to 220mm, and further preferably 200 mm.
In the invention, the upper layer, the middle layer and the lower layer of the vibrating screen 1 are connected through a screen locking device. In the invention, the vibrating screen is vibrated by a vibrating motor.
In the present invention, the bottom of the lower layer of the vibrating screen 1 is preferably provided with a damper spring 9. The present invention has no particular requirement on the kind of the damper spring 9, and the damper spring 9 known to those skilled in the art may be used. In the present invention, the number of the damper springs 9 is preferably 12.
In the present invention, a waste oil inlet 4 is provided at the top of the vibrating screen 1. In the invention, the waste oil inlet 4 is communicated with a metal part cleaning waste oil storage device 10 through a pipeline. In the present invention, a pump, preferably a magnetic pump, is preferably provided between the waste oil inlet 4 and the pipe of the accessory cleaning waste oil storage device 10.
In the present invention, the top of the vibrating screen 1 is also preferably provided with a water inlet 8. According to the invention, the water inlet 8 is arranged, so that the interior of the vibrating screen 1 can be washed, and oil sludge and grease are prevented from blocking the screen.
The treatment device for the metal piece cleaning waste oil comprises an oil sludge collecting device 5 communicated with an upper layer outlet of the vibrating screen 1. In the present invention, the sludge collection device 5 is preferably communicated with the upper outlet of the vibrating screen 1 through a pipeline. The invention does not require any particular kind of sludge collection device 5, and may be implemented using a collection device known to those skilled in the art, such as a collection tank.
The treatment device for the waste metal part cleaning oil comprises a grease collecting device 6 communicated with a middle layer outlet of the vibrating screen 1. In the present invention, the grease collecting device 6 is preferably communicated with the outlet of the middle layer of the vibrating screen 1 through a pipeline. The invention does not require any particular kind of grease collecting device 6, and may be used with collecting devices known to the person skilled in the art, such as collecting barrels.
The treatment device for the metal piece cleaning waste oil comprises a mixed liquid collecting device 7 communicated with a lower layer outlet of the vibrating screen 1. In the present invention, the mixed liquid collecting device 7 is preferably communicated with the lower outlet of the vibrating screen 1 through a pipeline. The present invention has no special requirement for the specific type of the mixed liquor collecting device 7, and a collecting device known to those skilled in the art, such as a collecting barrel, can be used.
In the invention, the structure schematic diagram of the waste oil treatment device for cleaning metal parts is shown in figure 1, and in figure 1, 1-a vibrating screen, 2-a first screen, 3-a second screen, 4-a waste oil inlet, 5-a sludge collection device, 6-a grease collection device, 7-a mixed liquid collection device, 8-a water inlet, 9-a damping spring, 10-a cleaning waste oil storage device and 11-a pump are arranged.
The invention provides a method for treating waste metal part cleaning oil based on the treatment device, which comprises the following steps:
the metal piece cleaning waste oil enters a vibrating screen 1 from a waste oil inlet 4 to perform reciprocating vibration, first separation is performed at a first screen 2 to obtain an oil sludge mixture on the screen and the residual cleaning waste oil under the screen, and the oil sludge mixture enters an oil sludge collecting device 5;
carrying out second separation on the undersize residual cleaning waste oil at a second screen 3 to obtain oversize grease and undersize residual liquid, wherein the grease enters a grease collecting device 6; and the undersize residual liquid passes through a mixed liquid collecting device 7, and the residual liquid contains a metal degreasing agent.
The invention has no special requirements on the type and source of the metal piece cleaning waste oil, and the metal piece cleaning waste oil from any source can be treated by using the device and the method. In the present invention, the metal member cleaning waste oil preferably contains sludge, grease, and an oil removing agent cleaned from the surface of the metal member. In the invention, the oil remover is preferably an alkaline oil remover, and as a specific embodiment of the invention, the oil remover is HSY-307 with the concentration of 25 g/L.
In the invention, the flow velocity of the metal piece cleaning waste liquid entering the vibrating screen 1 is preferably 1.2-1.5 m/s, and more preferably 1.3-1.4 m/s; the flow rate of the metal piece cleaning waste liquid entering the vibrating screen 1 is preferably 2.1-2.65 t/h, and more preferably 2.2-2.5 t/h. In the invention, the vibration power of the vibrating screen 1 is preferably 50-60 kW, and more preferably 55 kW; the amplitude is preferably 2-8 mm, and more preferably 4-6 mm; the vibration time is preferably 6-10 min, and more preferably 7-9 min. In the invention, the vibration amplitudes of the upper layer, the middle layer and the lower layer of the vibrating screen 1 are the same.
The present invention preferably reuses the metal degreasing agent in the residual liquid. In the present invention, the method of re-application preferably comprises the steps of:
and standing the residual liquid to obtain an upper oil layer and a lower water layer, and using the lower water layer for the surface oil removal treatment of the metal piece.
In the invention, the standing time is preferably 0.5-1 h.
In the present invention, after the reciprocating vibration, the washing of the inside of the vibrating screen 1 is also included. The present invention preferably uses water for rinsing; the flushing time is preferably 3-5 min.
The following will explain the waste metal cleaning oil treatment apparatus and method of the present invention in detail with reference to the examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The metal part cleaning waste oil treatment device of the metal part cleaning waste oil in the Shenzhen city Zhenrong precision hardware science and technology limited company is used for treating the metal part cleaning waste oil, wherein the oil content in the waste oil is 30 percent, and the mud content is 10 percent; wherein, the mesh aperture of the first screen 2 is 150 meshes, and the mesh aperture of the second screen is 350 meshes; the vertical distance between the first screen 2 and the second screen 3 is 150 mm.
The treatment method comprises the following steps:
the metal piece cleaning waste oil enters a vibrating screen 1 from a waste oil inlet 4 at the flow speed of 1.2m/s and the flow rate of 2.1t/h for reciprocating vibration, the power of the vibrating screen 1 is 55kW, the amplitude is 2mm, the vibration time is 6min, an oil sludge mixture in the metal piece cleaning waste oil enters an oil sludge collecting device 5, oil enters an oil sludge collecting device 6, and the residual liquid enters a mixed liquid collecting device 7; the volume ratio of the resulting sludge, grease and remaining liquid was about 1:3: 6.
And standing the residual liquid for 0.5h to obtain an upper oil layer and a lower water layer, and using the lower water layer for deoiling the surface of the metal piece, so that the cleaning agent has a good cleaning effect.
Example 2
The metal part cleaning waste oil treatment device of the metal part cleaning waste oil in the Shenzhen city Zhenrong precision hardware science and technology limited company is used for treating the metal part cleaning waste oil, wherein the oil content in the waste oil is 32 percent, and the mud content is 13 percent; wherein, the mesh aperture of the first screen 2 is 200 meshes, and the mesh aperture of the second screen is 400 meshes; the vertical distance between the first screen 2 and the second screen 3 is 200 mm.
The treatment method comprises the following steps:
the metal piece cleaning waste oil enters a vibrating screen 1 from a waste oil inlet 4 at the flow speed of 1.5m/s and the flow rate of 2.5t/h for reciprocating vibration, the power of the vibrating screen 1 is 55kW, the amplitude is 5mm, the vibration time is 8min, an oil sludge mixture in the metal piece cleaning waste oil enters an oil sludge collecting device 5, oil enters an oil grease collecting device 6, and the residual liquid enters a mixed liquid collecting device 7; the volume ratio of the resulting sludge, grease and residual liquid was about 1.3:3: 5.7.
And standing the residual liquid for 1h to obtain an upper oil layer and a lower water layer, and using the lower water layer for the surface oil removal treatment of the metal piece, so that the cleaning agent has a good cleaning effect.
Example 3
The metal part cleaning waste oil treatment device of the metal part cleaning waste oil in the Shenzhen city Zhenrong precision hardware science and technology limited company is used for treating the metal part cleaning waste oil, wherein the oil content in the waste oil is 35 percent, and the mud content is 15 percent; wherein, the mesh aperture of the first screen 2 is 250 meshes, and the mesh aperture of the second screen is 450 meshes; the vertical distance between the first screen 2 and the second screen 3 is 250 mm.
The treatment method comprises the following steps:
the metal piece cleaning waste oil enters a vibrating screen 1 from a waste oil inlet 4 at the flow speed of 1.3m/s and the flow rate of 2.4t/h for reciprocating vibration, the power of the vibrating screen 1 is 55kW, the amplitude is 8mm, the vibration time is 10min, an oil sludge mixture in the metal piece cleaning waste oil enters an oil sludge collecting device 5, oil enters an oil sludge collecting device 6, and the residual liquid enters a mixed liquid collecting device 7; the volume ratio of the resulting sludge, grease and residual liquid was about 1.5:3: 5.5.
And standing the residual liquid for 1h to obtain an upper oil layer and a lower water layer, and using the lower water layer for the surface oil removal treatment of the metal piece, so that the cleaning agent has a good cleaning effect.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A processing device for waste metal part cleaning oil comprises a vibrating screen (1);
the vibrating screen (1) is divided into an upper layer, a middle layer and a lower layer which are communicated in sequence; the upper layer and the middle layer of the vibrating screen (1) are separated by a first screen (2), the middle layer and the lower layer of the vibrating screen (1) are separated by a second screen (3), the mesh aperture of the first screen (2) is 150-250 meshes, and the mesh aperture of the second screen (3) is 350-450 meshes; a waste oil inlet (4) is formed in the top of the vibrating screen (1);
the oil sludge collecting device (5) is communicated with an upper layer outlet of the vibrating screen (1);
the grease collecting device (6) is communicated with a middle layer outlet of the vibrating screen (1);
and the mixed liquid collecting device (7) is communicated with the lower outlet of the vibrating screen (1).
2. Treatment device according to claim 1, characterized in that the material of the first screen (2) and the second screen (3) is stainless steel, PP or PE.
3. The processing apparatus according to claim 1, wherein the vertical distance between the first screen (2) and the second screen (3) is 150-250 mm.
4. Treatment device according to claim 1, characterized in that the top of the vibrating screen (1) is provided with a water inlet (8).
5. Treatment device according to claim 1, characterized in that the lower bottom of the vibrating screen (1) is provided with damping springs (9).
6. The method for treating the metal piece cleaning waste oil based on the treatment device of any one of claims 1 to 5 comprises the following steps:
the metal piece cleaning waste oil enters a vibrating screen (1) from a waste oil inlet (4) to perform reciprocating vibration, first separation is performed at a first screen (2) to obtain an oil sludge mixture on the screen and residual cleaning waste oil under the screen, and the oil sludge mixture enters an oil sludge collecting device (5);
performing second separation on the undersize residual cleaning waste oil at a second screen (3) to obtain oversize grease and undersize residual liquid, and enabling the grease to enter a grease collecting device (6); and the undersize residual liquid passes through a mixed liquid collecting device (7), and the residual liquid contains a metal degreasing agent.
7. The method according to claim 6, wherein the flow rate of the metal piece cleaning waste liquid entering the vibrating screen (1) is 1.2-1.5 m/s, and the flow rate is 2.1-2.65 t/h.
8. The method according to claim 6, characterized in that the vibrating screen (1) has a vibration power of 50-60 kW, an amplitude of 2-8 mm and a vibration time of 6-10 min.
9. The method according to claim 6, characterized in that after said reciprocating vibration, it further comprises flushing the inside of the vibrating screen (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011502101.0A CN112807833A (en) | 2020-12-18 | 2020-12-18 | Treatment device and method for waste cleaning oil of metal piece |
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| CN202011502101.0A CN112807833A (en) | 2020-12-18 | 2020-12-18 | Treatment device and method for waste cleaning oil of metal piece |
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Application publication date: 20210518 |