A high-low temperature combined oil removal device for treating engine bench wastewater

Abstract

The application relates to a high-low temperature combined oil removal device for treating engine bench wastewater, which comprises a suction port, a liquid inlet pipe, a cooler, a connecting elbow, a cooling separation tank, an oil suction pipe, an oil suction pump, a cooling coil, an adjustable oil suction pipe, a liquid level observer, a flash heater, a heating coil, a water discharge pipe, a water discharge valve, a sink elbow, an oil molecule catcher, a water suction pipe, a water suction pump, a check valve, a heating separation tank, a steam bypass pipe, a sealing flange, a heating plate, an electric heating wire, a heating controller, a condenser pipe, a throttle valve, a condenser, a gas discharge valve, a gas discharge pipe, a water collecting pipe, a water collecting valve, a post-water collecting pipe, a liquid level observation window, an oil suction net and a winding; the application guarantees the cleanliness of circulating water in the engine bench, enables the engine bench to work reliably for a long time, and prolongs the service life.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of engine, and particularly relates to a high-low temperature combined oil removal device for treating engine bench wastewater. BACKGROUND

[0002] With the increasing awareness of environmental protection, the separation and treatment of industrial waste must be strengthened. In the engine test process, the bench wastewater produced is mixed with lubricating oil, unburned fuel and intermediate products. If it is directly discharged, it will cause groundwater pollution, and have a bad impact on water quality, soil and biological living environment. At present, the wastewater treatment in the engine bench test usually adopts the static separation method, which separates the oil and water by density stratification, and directly discharges the upper oil to realize oil-water separation. However, this method has the problems of long time and difficult control of liquid level, and often causes unclear oil-water separation. In addition, the wastewater produced by the engine bench cannot be removed by conventional water treatment equipment, which often brings environmental pressure and enterprise production and operation pressure.

[0003] Therefore, effective oil removal of the engine bench wastewater is an important problem that must be concerned in the engine test stage. SUMMARY

[0004] The present application provides a high-low temperature combined oil removal device for treating engine bench wastewater to solve the above problems.

[0005] In order to solve the above technical problems, the present application provides a high-low temperature combined oil removal device for treating engine bench wastewater, characterized in that: it comprises a suction port (1), a liquid inlet pipe (2), a cooler (3), a cooling separation tank (5), an oil suction pipe (6), an oil suction pump (7), a cooling coil (8), an adjustable oil suction pipe (9), a liquid level observer (10), a rapid heater (11), a heating coil (12), a water discharge pipe (13), a water discharge valve (14), a water suction pipe (17), a water suction pump (18), a heating separation tank (20), a condensing pipe (26) and a condenser (28); the suction port (1), the liquid inlet pipe (2), the connecting elbow (4) and the cooling separation tank (5) are connected in sequence; the bottom of the cooling separation tank (5) is connected with the heating separation tank (20) through the water discharge pipe (13), the water discharge valve (14), the sink elbow (15), the water suction pipe (17) and the water suction pump (18) in sequence, and the upper part of the heating separation tank (20) is connected with the condenser (28) through the condensing pipe (26).

[0006] Further, the cooling separation tank (5) is provided with a cooling coil (8) and an adjustable oil suction pipe (9) connected below the oil suction pipe (6); the cooler (3) cools the mixed liquid in the cooling separation tank (5) through the cooling coil (8), so that the water with a high freezing point is quickly frozen, and the upper part of the cooling separation tank (5) forms an oil-containing turbid liquid and the lower part of the cooling separation tank (5) forms ice; a liquid level observer (10) is arranged on one side of the cooling separation tank (5) to observe the oil-ice interface position, adjust the inlet position of the adjustable oil suction pipe (9), start the oil suction pump (7), and make the oil suction pipe (6) generate suction force to suck away the oil liquid in the upper part of the cooling separation tank (5) through the oil suction pump (7) and store waste oil, so as to realize preliminary separation of oil and water.

[0007] Further, the liquid level observer (10) is provided with a liquid level observation window (34) to conveniently observe the oil-ice interface position in the cooling separation tank (5).

[0008] Further, the cooling separation tank (5) is provided with a heating coil (12), and the heating coil (12) is a multi-layer coil and is evenly distributed in the lower half of the cooling separation tank (5); after the oil liquid in the upper part of the cooling separation tank (5) is completely sucked, the heating coil (12) is heated by the rapid heater (11), the high-temperature heat-conducting oil is introduced into the ice along the heating coil (12), the ice is heated by the heating coil (12) to be melted into water, and then the water valve (14) on the water discharge pipe (13) is opened to perform secondary separation of the oil liquid through the oil suction net (35).

[0009] Further, the end of the suction port (1) is connected with an oil-containing wastewater pipeline of an engine bench, the adjustable oil suction pipe (9) is a corrosion-resistant stainless steel flexible pipe, the surface of the pipe is provided with a nano coating with a hardness greater than 7H, and the oil suction net (35) is a multi-layer mesh structure and is made of polypropylene material.

[0010] Further, the condenser (28) is provided with a gas discharge pipe (30) and a gas discharge valve (29) at the upper part and a water collecting pipe (31), a water collecting valve (32) and a water collecting pipe (33) at the lower part.

[0011] Further, the oil molecule trap (16) is arranged in the water suction pipe (17), and a winding (36) is arranged on the inner wall surface of the oil molecule trap (16); when the oil-water mixture passes through the oil molecule trap (16), the winding (36) is powered to make the oil molecule trap (16) generate a magnetic field, the oil molecules in the mixture are deflected in the magnetic field, the oil in the mixture is captured by the magnetic field, and the oil liquid is separated for the third time.

[0012] Further, the water pump (18) is installed in the middle of the water suction pipe (17), and the oil molecule collector (16) and the check valve (19) are arranged in front and back of the water pump (18) respectively, so as to guide the flow direction of the mixed liquid, and the check valve (19) is arranged in front of the inlet of the heating separation tank (20), so as to prevent the steam generated in the heating separation tank (20) from flowing back.

[0013] Further, the heating plate (23), the electric heating wire (24) and the heating controller (25) are arranged in the lower part of the heating separation tank (20), the current of the electric heating wire (24) is controlled by the heating controller (25), so that a certain heat is generated, the heating plate (23) is made of microcrystalline ceramic material, the heat generated by the electric heating wire (24) is transmitted to the heating plate (23), the remaining liquid in the heating separation tank (20) is heated by the heating plate (23), the water vapor is connected to the condensing pipe (26) through the steam bypass pipe (21) arranged on the top of the heating separation tank (20), and is condensed into liquid water again in the condenser (28) through the throttle valve (27).

[0014] Further, the gas discharge pipe (30) is arranged at one end of the top of the condenser (28), the opening of the gas discharge valve (29) arranged on the gas discharge pipe (30) is adjusted, and the negative pressure generated due to the condensation of the water vapor into liquid is adjusted, the water collecting pipe (31) is arranged at the bottom of the condenser (28), and is used for collecting the liquid water after condensation, the water collecting valve (32) is arranged in the lower part of the water collecting pipe (31), the water collecting pipe (33) is communicated with the water collecting pipe (31) after the water collecting valve (32) is opened, the liquid water produced flows out and is collected into the water storage device through the water collecting pipe (33).

[0015] Beneficial effects: the oil and water are preliminarily separated through different condensation points, the oil content in the oil-water mixture is collected again through the adsorption effect of the lipophilic and hydrophobic characteristics of the PDMS organic silicon film, the oil molecules are captured through the oil molecule collector by the action of the electromagnetic field on the polar substances, the water in the mixture is evaporated and then condensed into liquid water again, and the purified liquid water is collected into the water storage device for recycling.

[0016] (1) The high-low temperature combined oil removal device for treating engine bench wastewater fully utilizes the density, condensation point and boiling point of the oil and water in the mixed liquid, and realizes effective separation of the oil and water through a pure physical method.

[0017] (2) The high-low temperature combined oil removal device for treating engine bench wastewater forms four layers of oil-water separation treatment through the cooling separation tank, the oil absorption net, the oil molecule collector and the heating separation tank, so that the oily substances in the bench wastewater can be comprehensively treated, and the environment can be effectively protected.

[0018] (2) The high-low temperature combined oil removal device for treating engine test bench wastewater has reasonable system design, is suitable for any type of engine test bench, and can be widely applied to schools, factories, mines, enterprises, and fields of engine and whole vehicle research and development, testing, and certification, and in addition, the whole device system is simple and has low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A high-low temperature combined oil removal device for treating engine test bench wastewater according to an embodiment of the present application is shown in the figure;

[0020] Figure 2 A cooling separation tank according to an embodiment of the present application is shown in the figure;

[0021] Figure 3 A water pumping pipe according to an embodiment of the present application is shown in the figure;

[0022] Figure 4 A heating separation tank according to an embodiment of the present application is shown in the figure;

[0023] Figure 5 A condenser according to an embodiment of the present application is shown in the figure.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1. Suction port, 2. Liquid inlet pipe, 3. Cooler, 4. Connection elbow, 5. Cooling separation tank, 6. Oil pumping pipe, 7. Oil pumping pump, 8. Cooling coil, 9. Adjustable oil pumping pipe, 10. Liquid level observer, 11. Rapid heater, 12. Heating coil, 13. Water discharge pipe, 14. Water discharge valve, 15. Sinking elbow, 16. Oil molecule catcher, 17. Water pumping pipe, 18. Water pumping pump, 19. Check valve, 20. Heating separation tank, 21. Steam bypass pipe, 22. Sealing flange, 23. Heating plate, 24. Electric heating wire, 25. Heating controller, 26. Condensing pipe, 27. Throttle valve, 28. Condenser, 29. Air release valve, 30. Air release pipe, 31. Water collecting pipe, 32. Water collecting valve, 33. Post-collecting pipe, 34. Liquid level observation window, 35. Oil suction net, 36. Winding. DETAILED DESCRIPTION

[0026] In order to make the purpose, content and advantages of the present application more clear, the specific embodiments of the present application are described in further detail below.

[0027] The application provides a high-low temperature combined oil removal device for treating engine bench wastewater, which comprises a suction port (1), a liquid inlet pipe (2), a cooler (3), a connecting elbow (4), a cooling separation tank (5), an oil suction pipe (6), an oil suction pump (7), a cooling coil (8), an adjustable oil suction pipe (9), a liquid level observer (10), a rapid heater (11), a heating coil (12), a water discharge pipe (13), a water discharge valve (14), a submerged bend (15), an oil molecule trap (16), a water suction pipe (17), a water suction pump (18), a check valve (19), a heating separation tank (20), a steam bypass pipe (21), a sealing flange (22), a heating plate (23), an electric heating wire (24), a heating controller (25), a condensing pipe (26), a throttle valve (27), a condenser (28), an air release valve (29), an air release pipe (30), a water collecting pipe (31), a water collecting valve (32) and a post-water collecting pipe (33).

[0028] The left side of the suction port (1) is connected with an engine bench oil-containing wastewater pipeline, and the right side is connected with the liquid inlet pipe (2), the connecting elbow (4) and the cooling separation tank (5); the cooling separation tank (5) is connected with the water discharge pipe (13), the water discharge valve (14), the submerged bend (15), the water suction pipe (17), the water suction pump (18) and the heating separation tank (20); and the upper portion of the heating separation tank (20) is connected with the condensing pipe (26) and the condenser (28).

[0029] The cooling separation tank (5) is provided with the cooling coil (8) and the adjustable oil suction pipe (9). The cooler (3) cools the mixed liquid in the cooling separation tank (5) to 5 degrees Celsius below zero through the cooling coil (8), so that the water with a high freezing point is quickly frozen, and the oil-containing turbid liquid is formed in the upper portion of the cooling separation tank (5) and the water is frozen into ice in the lower portion of the cooling separation tank (5) by the action of static stratification; the oil-ice interface position in the cooling separation tank (5) is observed through the liquid level observer (10), the inlet position of the adjustable oil suction pipe (9) which is connected below the oil suction pipe (6) and inserted into the cooling separation tank (5) is adjusted, the oil suction pump (7) is started, the oil suction pipe (6) generates suction force, the oil liquid with small density floating in the upper portion of the cooling separation tank (5) is sucked away through the oil suction pump (7), and waste oil is stored, so that the oil and water are preliminarily separated.

[0030] The liquid level observer (10) is provided with a liquid level observation window (34), so that the oil-ice interface position in the cooling separation tank (5) can be conveniently observed.

[0031] The adjustable oil suction pipe (9) is a corrosion-resistant stainless steel flexible pipe, and the surface of the pipe is provided with a nano coating with a hardness greater than 7H, so that the pipe can effectively prevent oil.

[0032] The cooling separation tank (5) is equipped with the heating coil (12), which is a multi-layer coil evenly distributed in the lower half of the cooling separation tank (5). After the oil in the upper part of the cooling separation tank (5) is completely sucked out, the heat transfer oil in the heating coil (12) is heated to 350°C by the quencher (3), and the high-temperature heat transfer oil is passed into the ice through the heating coil (12). The ice is heated by the heating coil (12) and melted back into water. Then the drain valve (14) on the drain pipe (13) is opened, and the water flow rate is adjusted by the power of the water pump (18). The oil is then separated for the second time by the oil suction net (35).

[0033] The oil-absorbing mesh (35) has a multi-layer mesh structure, which can achieve oil-water separation while ensuring sufficient liquid flow rate. The oil-absorbing cotton is made of polypropylene (MBPP) material, which has the characteristics of high absorption rate, fast absorption, no cotton shedding, and high cleanliness, and is used to separate oil and water in the mixture.

[0034] The sinkhole (15) is connected to the drain pipe (14) and forms a local sedimentation area to mitigate the impact of the drain and avoid damaging the oil molecule trap (16).

[0035] The oil molecule trap (16) is installed on the left side of the water pump (17), and the winding (36) is installed on the inner wall. When the oil-water mixture passes through the oil molecule trap (16), the winding (36) is energized to generate a magnetic field. The oil molecule trap (16) uses the characteristic that oil molecules deflect in the magnetic field to capture the oil in the mixture and perform a third oil-liquid separation.

[0036] The water pump (18) is installed in the middle of the water pumping pipe (17), with the oil molecule trap (16) and the check valve (19) at the front and rear respectively, serving to guide the flow of the mixture. The check valve (19) is installed before the inlet of the heating separator (20) to prevent the steam generated in the heating separator (20) from flowing back.

[0037] The heating plate (23), the electric heating wire (24) and the heating controller (25) are installed at the lower part of the heating separation tank (20). The heating controller (25) controls the current of the electric heating wire (24) to generate heat. The heating plate (23) is made of microcrystalline ceramic material, which has the advantages of high strength, good heat conductivity and waterproofness. The heating plate (23) heats the remaining liquid in the heating separation tank (20) to 100℃ by the heat generated by the electric heating wire (24). The water vapor is produced by the boiling of water, which has the characteristics of low evaporation temperature and high oil evaporation temperature. The water vapor is connected to the condenser (28) through the steam bypass pipe (21) installed at the top of the heating separation tank (20) and the throttling effect of the throttle valve (27) to produce steam. The steam is condensed into liquid water in the condenser (28). The sealing flange (22) is used to ensure the effective sealing between the steam bypass pipe (21) and the condenser (26).

[0038] The condenser (28) is provided with the air release pipe (30) at one end of the top. The opening of the air release valve (29) installed thereon is adjusted to adjust the negative pressure generated by the condensation of water vapor into liquid.

[0039] The condenser (28) is provided with the water collecting pipe (31) at the bottom for collecting the condensed liquid water. The water collecting valve (32) is installed at the lower part of the water collecting pipe (31). When the water collecting valve (32) is opened, the water collecting pipe (33) is in communication with the water collecting pipe (31), and the produced liquid water flows out and is collected into the water storage device through the water collecting pipe (33).

[0040] The suction port (1), the liquid inlet pipe (2), the connecting elbow (4), the oil extraction pipe (6), the water discharge pipe (13), the submerged bend (15) and the water extraction pipe (17) are all corrosion-resistant and smooth metal pipes, and the surface is coated with a nanometer coating with a hardness greater than 9H, which can effectively prevent oil.

[0041] The water discharge valve (14) and the check valve (19) are made of corrosion-resistant and smooth metal materials.

[0042] The cooling coil (8) and the heating coil (12) are both copper pipes with a wall thickness of 2mm, which have the advantages of good heat conductivity and high strength.

[0043] The application absorbs the oil-containing mixed waste liquid generated by the engine bench through the suction port, and absorbs the mixed liquid into the cooling separation tank through the liquid inlet pipe and the connecting elbow, and then cools the mixed liquid in the cooling separation tank through the cooling coil of the cooler, so that the water with a higher freezing point is frozen, and the upper part of the cooling separation tank is the oil-containing turbid liquid and the lower part is ice. The oil-ice interface position is observed through the liquid level observer, the adjustable oil suction pipe inlet height is adjusted, the oil liquid with smaller density floating in the upper part is sucked away through the oil suction pump and stored as waste oil, and the preliminary separation of oil and water is realized; after the upper oil liquid is sucked clean, the oil liquid in the heating coil is warmed through the flash heater, high-temperature hot oil is introduced into the ice along the heating coil, the ice is heated through the heating coil to melt the ice into water again, the water valve on the water discharge pipe is opened, the water flow with a certain flow rate is realized through the adjustment of the water suction pump power, and the secondary separation of oil liquid is realized through the oil suction net; the winding is energized to make the oil molecule collector on the water suction pipe generate a magnetic field, the characteristics of the deflection of oil molecules in the magnetic field are used to capture the oil molecules, and the third oil liquid separation is realized; the remaining oil-containing liquid in the heating separation tank is heated, the water vapor is connected to the condensing pipe through the vapor bypass pipe and enters the condenser to condense into liquid water again, and finally the water is collected into the water storage device through the water collecting pipe, water collecting valve and water collecting pipe, the cleanliness of the circulating water in the engine bench is ensured, and the engine bench can work reliably for a long time, and the service life is prolonged.

[0044] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A high-low temperature combined oil removal device for treating engine bench wastewater, characterized in that: The application relates to a kind of oil-water separation device, including suction port (1), liquid inlet pipe (2), cooler (3), cooling separation tank (5), oil extraction pipe (6), oil extraction pump (7), cooling coil (8), adjustable oil extraction pipe (9), liquid level observer (10), quick heater (11), heating coil (12), water discharge pipe (13), water discharge valve (14), water extraction pipe (17), water extraction pump (18), heating separation tank (20), condenser pipe (26), condenser (28); the suction port (1), liquid inlet pipe (2), connecting elbow (4), cooling separation tank (5) are sequentially connected; the bottom of the cooling separation tank (5) is sequentially connected with the heating separation tank (20) through the water discharge pipe (13), water discharge valve (14), sink bend (15), water extraction pipe (17), water extraction pump (18), and the upper part of the heating separation tank (20) is connected with the condenser (28) through the condenser pipe (26); the cooling separation tank (5) is provided with the cooling coil (8) and the adjustable oil extraction pipe (9), and the adjustable oil extraction pipe (9) is connected below the oil extraction pipe (6); the cooling separation tank (5) is provided with the heating coil (12), and the heating coil (12) is a multilayer coil and is evenly distributed in the lower half of the cooling separation tank (5); the cooler (3) cools the mixed liquid in the cooling separation tank (5) through the cooling coil (8), so that the water with a high freezing point is quickly frozen, and the upper part of the cooling separation tank (5) is formed with oil-containing turbid liquid and the lower part is formed with water condensed into ice by combining the effect of static stratification; the cooling separation tank (5) is provided with the liquid level observer (10) on one side, which is used for observing the oil-ice interface position, adjusting the inlet position of the adjustable oil extraction pipe (9), starting the oil extraction pump (7), so that the oil extraction pipe (6) generates suction force, the oil liquid in the upper part of the cooling separation tank (5) is sucked away through the oil extraction pump (7), and waste oil is stored, thereby realizing preliminary separation of oil and water; after the oil liquid in the upper part of the cooling separation tank (5) is completely sucked, the heat-conducting oil in the heating coil (12) is heated through the quick heater (11), the high-temperature heat-conducting oil is introduced into the ice along the heating coil (12), the ice is heated through the heating coil (12) to be melted into water again, and the water discharge valve (14) on the water discharge pipe (13) is opened to perform secondary separation of oil liquid through the oil suction net (35).

2. The high-low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The liquid level observer (10) is provided with a liquid level observation window (34), so that the oil-ice interface position in the cooling separation tank (5) can be conveniently observed.

3. The high-low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The end of the suction port (1) is connected with an engine bench oil-containing wastewater pipeline; the adjustable oil extraction pipe (9) is a corrosion-resistant stainless steel hose, the surface of which is a nano coating with a hardness greater than 7H, which can effectively prevent oil; the oil suction net (35) is a multilayer mesh structure, and the oil absorption cotton in the mesh structure is made of polypropylene material.

4. The high-low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The condenser (28) is provided with a gas discharge pipe (30) and a gas discharge valve (29) at the upper part and is provided with a water collecting pipe (31), a water collecting valve (32) and a water collecting rear pipe (33) at the lower part.

5. The high and low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The oil molecule catcher (16) is installed in the water pumping pipe (17), and a winding (36) is installed on the inner wall surface of the oil molecule catcher (16). When the oil-water mixture passes through the oil molecule catcher (16), the winding (36) is energized to generate a magnetic field in the oil molecule catcher (16). The oil molecules in the mixture are captured by the magnetic field, and the third oil separation is performed by using the characteristic that the oil molecules are deflected in the magnetic field.

6. The high-low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The water pumping pump (18) is installed in the middle of the water pumping pipe (17), and the oil molecule catcher (16) and the check valve (19) are arranged in front and back of the water pumping pump (18), respectively, to guide the flow direction of the mixture. The check valve (19) is installed in front of the inlet of the heating separation tank (20) to prevent the backflow of the steam generated in the heating separation tank (20).

7. The high-low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The heating plate (23), the electric heating wire (24) and the heating controller (25) are installed in the lower part of the heating separation tank (20). The heating controller (25) controls the current of the electric heating wire (24) to generate a certain amount of heat. The heating plate (23) is made of microcrystalline ceramic material. The heat generated by the electric heating wire (24) is transmitted to the heating plate (23) to heat the remaining liquid in the heating separation tank (20). The water vapor is connected to the condensing pipe (26) through the steam bypass pipe (21) installed on the top of the heating separation tank (20), and then enters the condenser (28) through the throttle valve (27) to be condensed into liquid water.

8. The high-low temperature combined oil removal device for treating engine bench wastewater according to claim 1, characterized in that: The condenser (28) is provided with a gas discharge pipe (30) at one end of the top. The opening of the gas discharge valve (29) installed on the gas discharge pipe (30) is adjusted to adjust the negative pressure generated by the condensation of water vapor into liquid. The condenser (28) is provided with a water collecting pipe (31) at the bottom to collect the liquid water after condensation. The water collecting valve (32) is installed at the lower part of the water collecting pipe (31). When the water collecting valve (32) is opened, the water collecting pipe (33) is communicated with the water collecting pipe (31), and the produced liquid water flows out and is collected into the water storage device through the water collecting pipe (33).

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