Efficient oil mist purification device suitable for copper strip foil rolling mill

Abstract

The utility model discloses an efficient oil mist purification device suitable for a copper strip foil rolling mill, and relates to the field of oil mist treatment. A condensation module used for cooling high-temperature flue gas, a baffling module used for conducting turbulent flow purification on the condensed flue gas, a silk screen module used for conducting oil mist filtration on the flue gas subjected to turbulent flow purification and a deep purification module used for conducting activated carbon adsorption treatment on the filtered flue gas are sequentially arranged in the device. The baffling module comprises a plurality of baffling plates with the longitudinal sections of isosceles triangle structures, the multiple baffling plates are sequentially stacked at intervals from top to bottom, an oil mist-containing waste gas channel of an inverted-V-shaped structure is formed between every two adjacent baffling plates, and the two sides of each baffling plate are each provided with a collecting groove which is formed in the axial direction of the corresponding baffling plate and used for collecting large-particle oil drops. According to the utility model, the liquid and gas oil mist in the flue gas can be deeply removed through the multi-stage purification treatment process design, so that the rolling oil recovery efficiency is improved, and the workshop environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil mist treatment equipment, in particular to a high-efficiency oil mist purification device suitable for a copper strip foil rolling mill. Background Art

[0002] The copper strip foil rolling mill needs to use rolling oil for cooling and lubrication during the production process. The copper strip foil rolling oil is made by coupling refined mineral base oil and a variety of additives. It is suitable for stretching, calendering and other processing technologies. The rolling oil has a flash point of generally above 120°C, an initial distillation point of about 230°C, and a final distillation point of about 280°C. By designing lubrication and cooling parameters such as viscosity and annealing cleanliness, it effectively ensures that the surface of the strip foil is bright after rolling, there is less rolling oil residue, and the service life is long, which can meet the process lubrication requirements of copper finishing rolling.

[0003] The high temperature during the rolling process of the copper strip foil rolling mill causes the rolling oil to evaporate and form oil mist, which is discharged along with the flue gas. In order to collect the rolling oil and purify the flue gas, oil mist purification equipment is now installed at the mill exhaust hood to purify and recover the rolling oil mist generated by the copper strip foil rolling mill during the production process. Most of the existing oil mist purification devices use condensation equipment and a wire mesh demister to filter and purify the oil droplets in the flue gas, which has achieved the purpose of collecting rolling oil and safely discharging flue gas. However, since the gaps in the wire mesh are large and it only has a certain capture effect on droplets above 0.2μm, it is difficult to play a role in gaseous rolling oil volatiles, especially in summer when the temperature is high, the filtering and purification effect of the oil mist is not ideal, resulting in the subsequent flue gas emissions cannot meet the requirements of the current environmental protection emission standards, resulting in a waste of rolling oil resources and pollution of the surrounding environment of the workshop. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a high-efficiency oil mist purification device suitable for a copper strip foil rolling mill, which can deeply remove liquid and gaseous oil mist in the flue gas, thereby improving the rolling oil recovery efficiency and improving the workshop environment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-efficiency oil mist purification device suitable for a copper strip foil rolling mill comprises a tank body, one end of the tank body is provided with a smoke inlet, the other end of the tank body is provided with a smoke outlet, a condensation module for cooling high-temperature smoke, a baffle module for turbulent flow purification of the condensed smoke, a wire mesh module for oil mist filtering of the smoke after turbulent flow purification, and a deep purification module for activated carbon adsorption filtration treatment of the filtered smoke are sequentially arranged in the tank body, the baffle module comprises a plurality of baffles with isosceles triangle structures in longitudinal section, the plurality of baffles are stacked and arranged in sequence from top to bottom, an inverted V-shaped smoke channel is formed between adjacent baffles, and collection grooves arranged along the axial direction of the baffles and used for collecting large particle oil droplets are provided on both sides of the baffles.

[0007] Furthermore, the condensing module includes a front tube plate, an outlet pipe box, an intermediate pipe box, a rear tube plate, fin tubes and an inlet pipe box. Several fin tubes are arranged between the front tube plate and the rear tube plate. A water outlet pipe box connected to half of the fin tubes and a water inlet pipe box connected to the other half of the fin tubes are arranged on the plate surface of the front tube plate facing away from the rear tube plate. An intermediate pipe box connected to all the fin tubes is arranged on the plate surface of the rear tube plate facing away from the front tube plate.

[0008] Furthermore, a heat exchange tube for heating or cooling the baffle surface is provided at the bottom of the baffle.

[0009] Furthermore, a sealing plate is provided at the bottom of the heat exchange tube, which cooperates with the baffle plate and is used to seal and isolate the heat exchange tube, and the lower surface of the sealing plate is a convex surface.

[0010] Furthermore, the inner bottom surface of the collecting tank is an inclined tank surface which is arranged obliquely, and an opening is arranged at the lower end of the inclined tank surface.

[0011] Furthermore, the inner bottom surface of the tank body is an inclined bottom surface with the same inclination direction as the inclined groove surface, a guide groove is provided on the lower side of the inclined bottom surface, and a discharge port is provided at one end of the guide groove.

[0012] Furthermore, the wire mesh module is composed of a stainless steel coarse-effect wire mesh, a stainless steel high-efficiency wire mesh and a glass fiber wire mesh in sequence.

[0013] Furthermore, the deep purification module includes a breathable box and activated carbon particles filled in the box.

[0014] Compared with the prior art, the utility model has the following beneficial effects: by setting up a condensation module to cool down the flue gas, the rolling oil mist and high-temperature flue gas in the flue gas are condensed into oil mist and droplets, thus realizing the primary purification of the flue gas and the collection and treatment of the rolling oil;

[0015] By setting up the baffle module, the flue gas flows through the inverted V-shaped flue gas channel, and the large oil droplets in the flue gas collide with the baffle plate surface to form convergence and enrichment, thereby realizing the secondary purification of the flue gas and the collection of rolling oil;

[0016] By setting up a three-layer wire mesh module, small particles of oil mist in the flue gas can be adsorbed and collected, greatly improving the filtering effect of oil mist particles and achieving three-level purification of flue gas;

[0017] By setting up a deep purification module, the trace residual oil mist and gaseous rolling oil in the flue gas can be adsorbed, thus realizing the four-stage purification of the flue gas;

[0018] By setting up a collecting tank and a heat exchange tube, the heat exchange tube cools or heats the baffle plate surface, so that the oil droplets that collide with the baffle plate can smoothly slide along the baffle plate into the collecting tank, which not only avoids the adhesion and accumulation of oil droplets on the baffle plate surface, but also facilitates the subsequent collection and processing of the oil droplets;

[0019] The utility model can perform efficient and convenient four-stage purification of flue gas through a condensation module, a baffle module, a wire mesh module and a deep purification module, so that liquid and gaseous rolling oil mist in the flue gas can be deeply removed. The utility model can meet the use of copper strip foil rolling mills in various environmental conditions, not only meeting the requirements of national and local environmental protection standards, but also improving the rolling oil recovery efficiency and improving the workshop environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the condensation module structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the baffle module structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the baffle structure of the utility model;

[0024] Figure 5 It is a side view schematic diagram of the baffle of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the wire mesh module of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the deep purification module of the utility model;

[0027] Figure 8 This is a schematic diagram of the tank structure of the utility model.

[0028] In the figure: 1. flue gas inlet; 2. condensation module; 3. tank body; 4. baffle module; 5. wire mesh module; 6. deep purification module; 7. flue gas outlet; 8. front tube sheet; 9. water outlet pipe box; 10. intermediate pipe box; 11. rear tube sheet; 12. fin tube; 13. water inlet pipe box; 14. baffle; 15. flue gas channel; 16. heat exchange tube; 17. sealing plate; 18. collecting tank; 19. opening; 20. inclined tank surface; 21. stainless steel coarse-effect wire mesh; 22. stainless steel high-efficiency wire mesh; 23. glass fiber wire mesh; 24. box body; 25. activated carbon particles; 26. discharge port; 27. guide groove; 28. inclined bottom surface. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0030] Please refer to the instruction manual Figure 1-8 , the utility model provides a technical solution:

[0031] Embodiment 1, a high-efficiency oil mist purification device suitable for a copper strip foil rolling mill, comprising a tank body 3, a flue gas inlet 1 is provided at one end of the tank body 3, a flue gas outlet 7 is provided at the other end, a condensation module 2 for cooling high-temperature flue gas, a baffle module 4 for turbulent flow purification of the condensed flue gas, a wire mesh module 5 for oil mist filtering of the flue gas after turbulent flow purification, and a deep purification module 6 for activated carbon adsorption filtration treatment of the filtered flue gas are sequentially arranged in the tank body 3;

[0032] Specifically, the condensing module 2 includes a front tube sheet 8, a water outlet pipe box 9, an intermediate pipe box 10, a rear tube sheet 11, fin tubes 12 and a water inlet pipe box 13. Several fin tubes 12 are arranged between the front tube sheet 8 and the rear tube sheet 11. The front tube sheet 8 is provided with a water outlet pipe box 9 connected to half of the fin tubes 12 and a water inlet pipe box 13 connected to the other half of the fin tubes 12 on the plate surface of the front tube sheet 8 facing away from the rear tube sheet 11. The rear tube sheet 11 is provided with an intermediate pipe box 10 connected to all the fin tubes 12 on the plate surface facing away from the front tube sheet 8. The front ends of the water outlet pipe box 9 and the water inlet pipe box 13 are respectively provided with a water inlet and a water outlet. Among them, the water outlet pipe box 9 is arranged on the upper part of the water inlet pipe box 13, and several fin tubes 12 are arranged in a staggered manner, so as to improve the heat exchange effect.

[0033] The baffle module 4 includes a plurality of baffles 14 with isosceles triangle structures in longitudinal section. The plurality of baffles 14 are stacked and arranged in sequence from top to bottom. The two ends of the baffles 14 are respectively connected to the inner walls of the tank body 3 on both sides. An inverted V-shaped flue gas channel 15 is formed between adjacent baffles 14. Both sides of the baffles 14 are provided with a collecting groove 18 arranged along the axial direction of the baffles 14 and used to collect large particle oil droplets.

[0034] The wire mesh module 5 is composed of a stainless steel coarse-effect wire mesh 21, a stainless steel high-efficiency wire mesh 22 and a glass fiber wire mesh 23 in sequence;

[0035] The deep purification module 6 includes a box body 24 and activated carbon particles 25 filled in the box body 24. Both sides of the box body 24 are provided with air-permeable mesh holes;

[0036] When the rolling oil mist is purified, the smoke inlet 1 of the tank body 3 is connected to the rolling mill exhaust hood and fire damper in sequence, and the smoke outlet 7 is connected to the smoke exhaust fan and exhaust pipe in sequence. After the oily smoke enters the tank body 3 through the smoke inlet 1, it first enters the condensation module 2 to be cooled to 25℃±3℃, and the rolling oil mist and smoke are condensed into oil mist and droplets for the first purification and collection; the condensed smoke enters the baffle module 4, and the large particles of oil droplets (about 20μm) in the smoke collide with the baffle plate 14 to form convergence and enrichment and flow into the collection The second purification is achieved in the collecting tank 18; the oil mist containing small particles passes through the wire mesh module and is filtered in turn through the stainless steel coarse-effect wire mesh 21, the stainless steel high-efficiency wire mesh 22 and the glass fiber wire mesh 23. The stainless steel wire mesh module absorbs and collects the tiny oil mist. At this time, the liquid oil mist has been basically removed, and the third purification is achieved; finally, the oily fume enters the deep purification section again, and the trace residual oil mist and gaseous rolling oil are deeply purified and adsorbed by the activated carbon particles 25, achieving the fourth purification. The exhaust gas that meets the purification standards is discharged into the atmosphere through the fan and the exhaust pipe.

[0037] Embodiment 2: In order to facilitate the collection and treatment of the collected rolling oil, the inner bottom surface of the collection tank 18 is an inclined tank surface 20, and the lower end of the inclined tank surface 20 is provided with an opening 19. The inner bottom surface of the tank body 3 is an inclined bottom surface 28 with the same inclination direction as the inclined tank surface 20. A guide groove 27 is provided on the lower side of the inclined bottom surface 28, and a discharge port 26 is provided at one end of the guide groove 27. The rolling oil formed by the treatment of the condensation module 2, the deflection module 4 and the wire mesh module 5 flows into the guide groove 27 on the inner bottom surface of the tank body 3 under the action of gravity, and then is discharged to the waste oil system through the discharge port 26 of the guide groove 27.

[0038] In the third embodiment, during the process of purifying the flue gas by the baffle module 4, the oil mist particles will adhere to the surface of the baffle plate 14 after impacting the surface of the baffle plate 14. If too many oil mist particles adhere to the surface of the baffle plate 14, it will not only affect the purification effect of the flue gas, but also be inconvenient for the subsequent collection and treatment of the oil mist particles. For this reason, a heat exchange tube 16 for heating or cooling the surface of the baffle plate 14 is provided at the bottom of the baffle plate 14. The heat exchange tube 16 can be used to heat or cool the surface of the baffle plate 14, so that the oil mist particles can smoothly slide from the surface of the baffle plate 14 to the collection tank 18. A sealing plate 17 for sealing and blocking the heat exchange tube 16 is provided at the bottom of the heat exchange tube 16. The two sides of the sealing plate 17 are respectively connected to the two sides of the lower surface of the baffle plate 14. In order to prevent the oil mist particles from adhering to the lower surface of the sealing plate 17, the lower surface of the sealing plate 17 is a convex surface.

[0039] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A high-efficiency oil mist purification device suitable for a copper strip foil rolling mill, comprising a tank body (3), wherein one end of the tank body (3) is provided with a smoke inlet (1) and the other end is provided with a smoke outlet (7), Features: A condensation module (2) for cooling high-temperature flue gas, a baffle module (4) for turbulent flow purification of the condensed flue gas, a screen module (5) for oil mist filtering of the flue gas after turbulent flow purification, and a deep purification module (6) for activated carbon adsorption treatment of the filtered flue gas are sequentially arranged in the tank body (3). The baffle module (4) comprises a plurality of baffle plates (14) having an isosceles triangle structure in longitudinal section. The plurality of baffle plates (14) are stacked and arranged in sequence from top to bottom, and an inverted V-shaped flue gas channel (15) is formed between adjacent baffle plates (14). Collection grooves (18) arranged along the axial direction of the baffle plates (14) and used for collecting large oil droplets are provided on both sides of the baffle plates (14).

2. According to claim 1, a high-efficiency oil mist purification device suitable for a copper strip foil rolling mill, Features: The condensing module (2) comprises a front tube sheet (8), a water outlet pipe box (9), an intermediate pipe box (10), a rear tube sheet (11), finned tubes (12) and a water inlet pipe box (13); a plurality of finned tubes (12) are arranged between the front tube sheet (8) and the rear tube sheet (11); a water outlet pipe box (9) connected to half of the finned tubes (12) and a water inlet pipe box (13) connected to the other half of the finned tubes (12) are arranged on the plate surface of the front tube sheet (8) facing away from the rear tube sheet (11); and an intermediate pipe box (10) connected to all of the finned tubes (12) is arranged on the plate surface of the rear tube sheet (11) facing away from the front tube sheet (8).

3. According to claim 2, a high-efficiency oil mist purification device suitable for a copper strip foil rolling mill, Features: A heat exchange tube (16) for heating or cooling the surface of the baffle plate (14) is provided at the bottom of the baffle plate (14).

4. According to claim 3, a high-efficiency oil mist purification device suitable for a copper strip foil rolling mill, Features: A sealing plate (17) is provided at the bottom of the heat exchange tube (16) and cooperates with the baffle plate (14) to seal and isolate the heat exchange tube (16); the lower surface of the sealing plate (17) is a convex surface.

5. The high-efficiency oil mist purification device suitable for a copper strip foil rolling mill according to claim 1, Features: The inner bottom surface of the collecting groove (18) is an inclined groove surface (20) arranged obliquely, and an opening (19) is provided at the lower end of the inclined groove surface (20).

6. A high-efficiency oil mist purification device suitable for a copper strip foil rolling mill according to claim 5, Features: The inner bottom surface of the tank body (3) is an inclined bottom surface (28) having the same inclination direction as the inclined groove surface (20), a guide groove (27) is provided on one side of the lower part of the inclined bottom surface (28), and a discharge port (26) is provided at one end of the guide groove (27).

7. The high-efficiency oil mist purification device suitable for a copper strip foil rolling mill according to claim 1, Features: The wire mesh module (5) is composed of a stainless steel coarse-effect wire mesh (21), a stainless steel high-efficiency wire mesh (22), and a glass fiber wire mesh (23) which are sequentially combined.

8. The high-efficiency oil mist purification device suitable for a copper strip foil rolling mill according to claim 1, Features: The deep purification module (6) comprises an air-permeable box (24) and activated carbon particles (25) filled in the box (24).

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