High-pressure water degreasing system

Abstract

The utility model discloses a high-pressure water degreasing system, which relates to the technical field of strip steel deep processing and sewage treatment, and comprises an infiltration box, a flat bed paper tape filter, a first collecting box, an ultrafiltration component, a second collecting box, a nanofiltration component, a heating box, a high-pressure pump, a pressure regulating valve and an oil collecting box, according to the high-pressure water degreasing system, the strip steel, the ultrafiltration assembly and the nanofiltration assembly are arranged, the surface of the strip steel can be cleaned through high-pressure water, then the water is filtered through the flat bed paper tape filter, the ultrafiltration assembly and the nanofiltration assembly in sequence, grease and dirt in sewage are separated out, and then the high-pressure water degreasing system is used for degreasing. And the effluent after nanofiltration is directly recycled, and chemical agents such as a degreasing agent are not required to be added, so that the water body is not further polluted, other equipment for treating the added chemical agents is not required to be additionally arranged, the water is saved, and the sewage treatment cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of deep processing of strip steel and sewage treatment technology, specifically a high-pressure water degreasing system. Background Technology

[0002] Steel strip is a coiled profile produced through a forming process. During the forming process, steel strip becomes contaminated with a large amount of oil and iron powder. If galvanized directly, it is difficult to form a zinc layer on its surface, and even if a zinc layer is formed, it easily peels off naturally. Galvanized steel coils face the same problem before color coating processing. Therefore, steel strip must undergo surface treatment before galvanizing and coating, namely chemical degreasing and electrolytic degreasing, to remove oil and iron powder. Chemical degreasing involves using a cleaning solution prepared by adding a degreasing agent to water, which is sprayed and brushed to clean the surface of the steel strip. The cleaning solution and rinsing water containing grease and iron powder from cleaning the steel strip are oily wastewater and need to be discharged to the factory's wastewater treatment plant for further treatment, which not only increases treatment costs but also requires additional equipment that occupies a large area. Similarly, the electrolytic degreasing process also requires a cleaning solution containing a degreasing agent, which also generates a large amount of oily wastewater. Therefore, in order to reduce the use of degreasing agents, reduce water consumption in the strip steel production process, reduce pollutant emissions, and promote cleaner production, a high-pressure water degreasing system is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a high-pressure water degreasing system that solves the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure water degreasing system, comprising an impregnation tank, a flatbed paper tape filter, a first collection tank, an ultrafiltration assembly, a second collection tank, a nanofiltration assembly, a heating tank, a high-pressure pump, a pressure regulating valve, and an oil collection tank. The impregnation tank contains a submerged roller. An inlet end is located at the top of the impregnation tank, and an outlet end is located at the top of the impregnation tank, on one side of the inlet end. A strip steel is placed inside the impregnation tank, with both ends of the strip steel extending through the inlet end and the outlet end to the outside of the impregnation tank, respectively. Two high-pressure water jets are fixedly connected inside the impregnation tank, located on opposite sides of the strip steel. The flatbed paper tape filter is fixedly connected to the top of the first collection tank. An overflow port is installed on the impregnation tank, and the flatbed paper tape filter is connected to the overflow port via a pipeline. The discharge end of the flatbed paper tape filter extends into the first collection tank. The first collection tank is connected to the ultrafiltration module via an ultrafiltration pump. The outlet of the ultrafiltration module extends into the second collection tank. The second collection tank is connected to the nanofiltration module via a nanofiltration pump. The outlet of the nanofiltration module extends into the heating tank. The heating tank is connected to the pressure regulating valve via a high-pressure pump. One end of the pressure regulating valve is equipped with a first pipe, and one end of the first pipe is connected to the connection end of two high-pressure water jets. A second pipe is installed on the oil collection tank. A fourth pipe is installed on one end of the second pipe. An ultrafiltration back pressure valve is installed on one end of the fourth pipe. One end of the ultrafiltration back pressure valve is connected to the ultrafiltration module. The other end of the second pipe is connected to a nanofiltration back pressure valve, and one end of the nanofiltration back pressure valve is connected to the nanofiltration module. A third pipe is installed on the first collection tank. One end of the third pipe is connected to the second pipe. A sludge pump is fixedly connected to one side of the oil collection tank.

[0005] Optionally, a heater is installed inside the heating box, and both the conveying end and the output end of the heater extend to the outside of the heating box.

[0006] Optionally, the two high-pressure water jets are located on opposite sides of the strip.

[0007] Optionally, the outer side of the submerged roller is in contact with the surface of the strip.

[0008] Optionally, the ultrafiltration assembly is a ceramic ultrafiltration machine.

[0009] Optionally, a support roller is installed inside the immersion tank and opposite the high-pressure water jet.

[0010] This invention provides a high-pressure water degreasing system, which has the following beneficial effects:

[0011] 1. This high-pressure water degreasing system uses high-pressure water jets to clean oil stains from the surface of steel strips without the need for degreasing agents or other chemical agents, thus reducing processing costs and preventing further pollution of water bodies.

[0012] 2. This high-pressure water degreasing system, by setting up ultrafiltration and nanofiltration components, can filter the degreasing wastewater sequentially through a flat bed paper belt filter, ultrafiltration components, and nanofiltration components, separating the grease and dirt in the wastewater. The effluent can be directly reused, which greatly reduces production water consumption, reduces the discharge of polluted water, and reduces the cost of wastewater treatment.

[0013] 3. This high-pressure water degreasing system is equipped with a heating box and a heater. When the wastewater is purified, it will have a certain temperature as it passes through the flat bed paper tape filter, ultrafiltration module and nanofiltration module. At this time, the heater heats the purified water inside the heating box to ensure the temperature of the water inside the heating box. Then, the surface of the strip steel is cleaned with hot water, which is more effective and can also preheat the strip steel for subsequent processing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the system structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the immersion tank structure of this utility model.

[0017] In the diagram: 1. Nanofiltration back pressure valve; 2. Ultrafiltration back pressure valve; 3. Ultrafiltration module; 4. Strip steel; 5. High-pressure water jet; 6. Overflow port; 7. Immersion tank; 8. Submerged roller; 9. Flatbed paper tape filter; 10. First collection tank; 11. Ultrafiltration pump; 12. Second collection tank; 13. Nanofiltration pump; 14. Nanofiltration module; 15. Heating box; 16. Heater; 17. High-pressure pump; 18. Pressure regulating valve; 19. Oil collection tank; 20. Sewage pump; 21. First pipe; 22. Second pipe; 23. Third pipe; 24. Fourth pipe; 25. Support roller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1 to 2 This utility model provides a technical solution: a high-pressure water degreasing system, including an impregnation tank 7, a flatbed paper tape filter 9, a first collection tank 10, an ultrafiltration assembly 3, a second collection tank 12, a nanofiltration assembly 14, a heating tank 15, a high-pressure pump 17, a pressure regulating valve 18, and an oil collection tank 19. A submerged roller 8 is installed inside the impregnation tank 7. An inlet end is provided at the top of the impregnation tank 7, and an outlet end is provided at the top of the impregnation tank 7 on one side of the inlet end. A strip steel 4 is placed inside the impregnation tank 7. The two ends of strip 4 extend through the inlet and outlet ends to the outside of the impregnation tank 7. Two high-pressure water jets 5 are fixedly connected inside the impregnation tank 7, located on opposite sides of the strip 4. A flatbed paper tape filter 9 is fixedly connected to the top of the first collection tank 10. An overflow port 6 is installed on the impregnation tank 7. The flatbed paper tape filter 9 is connected to the overflow port 6 via a pipeline. The discharge end of the flatbed paper tape filter 9 extends into the interior of the first collection tank 10. The first collection tank 10 and the ultrafiltration assembly... Units 3 are connected via an ultrafiltration pump 11. The outlet of ultrafiltration unit 3 extends into the second collection tank 12. The second collection tank 12 is connected to nanofiltration unit 14 via a nanofiltration pump 13. The outlet of nanofiltration unit 14 extends into the heating tank 15. The heating tank 15 is connected to pressure regulating valve 18 via a high-pressure pump 17. One end of pressure regulating valve 18 is equipped with a first pipe 21, and one end of the first pipe 21 is connected to the connection ends of two high-pressure water jets 5. An oil collection tank 19 is equipped with... The second pipe 22 has a fourth pipe 24 installed at one end, an ultrafiltration back pressure valve 2 installed at one end, and an ultrafiltration back pressure valve 2 connected to an ultrafiltration module 3 at one end. The other end of the second pipe 22 is connected to a nanofiltration back pressure valve 1, and an end of the nanofiltration back pressure valve 1 is connected to a nanofiltration module 14. A third pipe 23 is installed on the first collection box 10, and one end of the third pipe 23 is connected to the second pipe 22. A sewage pump 20 is fixedly connected to one side of the oil collection tank 19.

[0020] The heating box 15 is equipped with a heater 16. The conveying end and the output end of the heater 16 extend to the outside of the heating box 15, so that steam or hot water can be input into the heater 16, thereby heating the clean water inside the heating box 15, increasing the temperature of the water inside the heating box 15, and ensuring the cleaning effect of water on the strip steel 4.

[0021] Two high-pressure water jets 5 are located on both sides of the strip steel 4, and the surface of the strip steel 4 is cleaned by the high-pressure water sprayed by the two high-pressure water jets 5.

[0022] The outer side of the submerged roller 8 is in contact with the surface of the strip 4, and the movement of the strip 4 is guided by the submerged roller 8.

[0023] Among them, the ultrafiltration component 3 adopts a ceramic ultrafiltration machine, which can separate tiny solid pollutants from wastewater.

[0024] The heating box 15 is equipped with a temperature sensor to monitor the temperature of the water inside the heating box 15.

[0025] A support roller 25 is installed inside the immersion tank 7 and opposite the high-pressure water jet 5.

[0026] In summary, during operation, the high-pressure water degreasing system works as follows: the steel strip enters the immersion tank 7 through the inlet end, is guided by the submerged roller 8, and then moves out of the immersion tank 7 through the outlet end. During this movement, high-pressure water is sprayed by the high-pressure water jet 5 to wash away grease and dirt from the surface of the steel strip. The wastewater, carrying the washed-off grease and dirt, then flows through the overflow port 6 into the flatbed paper tape filter 9 for coarse filtration. The wastewater is then discharged into the first collection tank 10, and then through the ultrafiltration pump 11 into the ultrafiltration module 3. From there, it enters the second collection tank 12, where the ultrafiltration module 3 separates dust and dirt from the wastewater. The wastewater then enters the second collection tank 12, and finally through the nanofiltration pump 13 into the nanofiltration module 14, where the nanofiltration module separates grease and dirt from the water. Finally, purified water enters the second collection tank. Inside the heating chamber 15, the temperature of the purified water stored inside is detected by a temperature sensor. If the temperature is low, the heater 16 is activated to heat the purified water inside the heating chamber 15. The purified water is then discharged into the first pipe 21 through the high-pressure pump 17 and the pressure regulating valve 18. Next, it enters the two high-pressure water jets 5 through the first pipe 21. The two high-pressure water jets 5 spray high-pressure water onto the surface of the strip steel 4 to clean the surface of the strip steel 4. Large particles of dirt separated by the flat bed paper tape filter 9 enter the second pipe 22 through the first pipe 21. Small particles of dirt separated by the ultrafiltration module 3 are drawn into the second pipe 22 through the ultrafiltration back pressure valve 2. Organic dirt separated by the nanofiltration module 14 is discharged into the second pipe 22 through the nanofiltration back pressure valve 1. All collected dirt enters the oil collection tank 19 through the second pipe 22 for storage. The dirt collected and stored in the oil collection tank 19 can be extracted by the sewage pump 20 and discharged into the subsequent treatment equipment.

[0027] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure water degreasing system, characterized in that: The system includes an impregnation tank (7), a flatbed paper tape filter (9), a first collection tank (10), an ultrafiltration assembly (3), a second collection tank (12), a nanofiltration assembly (14), a heating tank (15), a high-pressure pump (17), a pressure regulating valve (18), and an oil collection tank (19). The impregnation tank (7) is equipped with a submerged roller (8). The top of the impregnation tank (7) is provided with an inlet end, and the top of the impregnation tank (7) and the side of the inlet end are provided with an outlet end. The impregnation tank (7) contains a strip steel (4), and the two ends of the strip steel (4) extend into the impregnation tank through the inlet end and the outlet end, respectively. On the outside of (7), two high-pressure water jets (5) are fixedly connected inside the immersion tank (7). The two high-pressure water jets (5) are located on both sides of the strip steel (4). A flatbed paper tape filter (9) is fixedly connected to the top of the first collection tank (10). An overflow port (6) is installed on the immersion tank (7). The flatbed paper tape filter (9) and the overflow port (6) are connected by a pipeline. The discharge end of the flatbed paper tape filter (9) extends into the first collection tank (10). The first collection tank (10) is connected to the ultrafiltration assembly (3) through an ultrafiltration pump (11). The outlet end of the ultrafiltration component (3) extends into the interior of the second collection tank (12). The second collection tank (12) is connected to the nanofiltration component (14) via a nanofiltration pump (13). The outlet end of the nanofiltration component (14) extends into the interior of the heating tank (15). The heating tank (15) is connected to the pressure regulating valve (18) via a high-pressure pump (17). One end of the pressure regulating valve (18) is equipped with a first pipe (21), and one end of the first pipe (21) is connected to the connection end of two high-pressure water jets (5). A second pipe (22) is installed on the oil collection tank (19). A fourth pipe (24) is installed at one end of the second pipe (22), and an ultrafiltration back pressure valve (2) is installed at one end of the fourth pipe (24). One end of the ultrafiltration back pressure valve (2) is connected to the ultrafiltration assembly (3). The other end of the second pipe (22) is connected to a nanofiltration back pressure valve (1). One end of the nanofiltration back pressure valve (1) is connected to the nanofiltration assembly (14). A third pipe (23) is installed on the first collection box (10), and one end of the third pipe (23) is connected to the second pipe (22). A sewage pump (20) is fixedly connected to one side of the oil collection tank (19).

2. The high-pressure water degreasing system according to claim 1, characterized in that: The heating box (15) is equipped with a heater (16).

3. The high-pressure water degreasing system according to claim 1, characterized in that: The two high-pressure water jets (5) are located on both sides of the strip (4).

4. The high-pressure water degreasing system according to claim 1, characterized in that: The outer side of the submerged roller (8) is in contact with the surface of the strip (4).

5. The high-pressure water degreasing system according to claim 1, characterized in that: The ultrafiltration component (3) is a ceramic ultrafiltration machine.

6. The high-pressure water degreasing system according to claim 1, characterized in that: A support roller (25) is installed inside the immersion tank (7) and opposite the high-pressure water jet (5).

Images