High-pressure water degreasing system

Abstract

The invention 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 collection box, an ultrafiltration assembly, a second collection box, a nanofiltration assembly, a heating box, a high-pressure pump, a pressure regulating valve and an oil collection 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] The invention relates to the technical field of strip steel deep processing and sewage treatment, in particular to a high-pressure water degreasing system. Background Art

[0002] Steel strip is a rolled profile that has gone through a forming process. During the forming process, the steel strip is stained with a lot of oil and iron powder. If it is directly galvanized, it is difficult to plate a zinc layer on its surface. Even if it is plated with a zinc layer, it is easy to fall off naturally. Galvanized steel coils also face the same problem before color coating. Therefore, before galvanizing and coating, the steel strip must be treated on the surface, that is, chemical degreasing and electrolytic degreasing are carried out to remove oil and iron powder. Chemical degreasing is a cleaning liquid prepared by adding a degreasing agent to water, and the surface of the strip is cleaned by spraying and brushing. The cleaning liquid and rinsing water with grease and iron powder after cleaning the steel strip are all oily wastewater, which needs to be discharged to the factory sewage station for subsequent treatment, which not only increases the treatment cost, but also requires its additional equipment to occupy a large area. Similarly, in the electrolytic degreasing process, a cleaning liquid with a degreasing agent is also needed, which will also produce a large amount of oily wastewater. Therefore, in order to reduce the use of degreasing agents, reduce water consumption in the strip production process, reduce the emission of pollutants and promote clean production, a high-pressure water degreasing system is proposed. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a high-pressure water degreasing system, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-pressure water degreasing system, comprising an infiltration box, a flat-bed paper belt 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 collection box, wherein a sinking roller is installed inside the infiltration box, an inlet end is arranged at the top of the infiltration box, and an outlet end is arranged at the top of the infiltration box and on one side of the inlet end, a steel strip is placed inside the infiltration box, and the two ends of the steel strip respectively pass through the inlet end and the outlet end and extend to the outside of the infiltration box, two high-pressure water knives are fixedly connected inside the infiltration box, and the two high-pressure water knives are respectively located on both sides of the steel strip, a flat-bed paper belt filter is fixedly connected to the top of the first collecting box, an overflow port is installed on the infiltration box, the flat-bed paper belt filter and the overflow port are connected by a pipeline, and the discharge end of the flat-bed paper belt filter extends to the inside of the first collecting box, The first collecting box is connected to the ultrafiltration component through an ultrafiltration pump, and the liquid outlet end of the ultrafiltration component extends to the inside of the second collecting box. The second collecting box is connected to the nanofiltration component through a nanofiltration pump, and the liquid outlet end of the nanofiltration component extends to the inside of the heating box. The heating box is connected to the pressure regulating valve through a high-pressure pump. A first pipeline is installed at one end of the pressure regulating valve, and one end of the first pipeline is connected to the connecting ends of two high-pressure water knives. A second pipeline is installed on the oil collecting box, and a fourth pipeline is installed at one end of the second pipeline. An ultrafiltration back-pressure valve is installed at one end of the fourth pipeline, and one end of the ultrafiltration back-pressure valve is connected to the ultrafiltration component. The other end of the second pipeline is connected to the nanofiltration back-pressure valve, and one end of the nanofiltration back-pressure valve is connected to the nanofiltration component. A third pipeline is installed on the first collecting box, and one end of the third pipeline is connected to the second pipeline. A sewage pump is fixedly connected to one side of the oil collecting box.

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

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

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

[0008] Optionally, the ultrafiltration component adopts a ceramic ultrafiltration machine.

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

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

[0011] 1. The high-pressure water degreasing system uses high-pressure water to clean the oil stains on the surface of the strip by setting a high-pressure water jet device. There is no need to add chemical agents such as degreasing agents, which reduces processing costs and does not cause further pollution to the water body.

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

[0013] 3. The high-pressure water degreasing system is equipped with a heating box and a heater. When the sewage is purified, the sewage will have a certain temperature when passing through the flat-bed paper belt filter, the ultrafiltration component and the nanofiltration component. At this time, the clean water inside the heating box is heated by the heater to ensure the temperature of the water inside the heating box, and then the surface of the strip is cleaned by hot water, which has a better effect and can preheat the strip to facilitate subsequent process treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the infiltration box of the present invention.

[0017] In the figure: 1. nanofiltration back pressure valve; 2. ultrafiltration back pressure valve; 3. ultrafiltration component; 4. strip steel; 5. high-pressure water jet; 6. overflow port; 7. infiltration box; 8. sinking roller; 9. flat bed paper belt filter; 10. first collecting box; 11. ultrafiltration pump; 12. second collecting box; 13. nanofiltration pump; 14. nanofiltration component; 15. heating box; 16. heater; 17. high-pressure pump; 18. pressure regulating valve; 19. oil collection tank; 20. sewage pump; 21. first pipeline; 22. second pipeline; 23. third pipeline; 24. fourth pipeline; 25. support roller. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 to Figure 2 The present invention provides a technical solution: a high-pressure water degreasing system, comprising an infiltration box 7, a flat-bed paper belt filter 9, a first collection box 10, an ultrafiltration component 3, a second collection box 12, a nanofiltration component 14, a heating box 15, a high-pressure pump 17, a pressure regulating valve 18 and an oil collection box 19, a sinking roller 8 is installed inside the infiltration box 7, an inlet end is arranged at the top of the infiltration box 7, a removal end is arranged at the top of the infiltration box 7 and at one side of the inlet end, a strip steel 4 is placed inside the infiltration box 7, and the strip steel 4 The two ends of the first collecting box 10 extend through the inlet end and the outlet end to the outside of the infiltration box 7, and two high-pressure water jets 5 are fixedly connected inside the infiltration box 7. The two high-pressure water jets 5 are respectively located on both sides of the strip steel 4. The top of the first collecting box 10 is fixedly connected to a flat bed paper belt filter 9. An overflow port 6 is installed on the infiltration box 7. The flat bed paper belt filter 9 is connected to the overflow port 6 through a pipeline. The discharge end of the flat bed paper belt filter 9 extends to the inside of the first collecting box 10. The first collecting box 10 and the ultrafiltration component 3 are connected. The ultrafiltration components 3 are connected to each other through an ultrafiltration pump 11, the liquid outlet of the ultrafiltration component 3 extends to the inside of the second collection box 12, the second collection box 12 and the nanofiltration component 14 are connected through a nanofiltration pump 13, the liquid outlet of the nanofiltration component 14 extends to the inside of the heating box 15, the heating box 15 and the pressure regulating valve 18 are connected through a high-pressure pump 17, one end of the pressure regulating valve 18 is installed with a first pipeline 21, one end of the first pipeline 21 is connected to the connection end of the two high-pressure water jets 5, and the oil collection box 19 is installed with a first pipeline 21. Two pipelines 22, a fourth pipeline 24 is installed at one end of the second pipeline 22, an ultrafiltration back pressure valve 2 is installed at one end of the fourth pipeline 24, one end of the ultrafiltration back pressure valve 2 is connected to the ultrafiltration component 3, the other end of the second pipeline 22 is connected to the nanofiltration back pressure valve 1, one end of the nanofiltration back pressure valve 1 is connected to the nanofiltration component 14, a third pipeline 23 is installed on the first collecting box 10, one end of the third pipeline 23 is connected to the second pipeline 22, and a sewage pump 20 is fixedly connected to one side of the oil collecting tank 19.

[0020] Among them, a heater 16 is installed inside the heating box 15, and the delivery end and the output end of the heater 16 both extend to the outside of the heating box 15. Steam or hot water can be input into the heater 16, so that the heater 16 heats the clean water inside the heating box 15, thereby increasing the temperature of the water in the heating box 15 and ensuring the cleaning effect of the strip steel 4 by water.

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

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

[0023] The ultrafiltration component 3 adopts a ceramic ultrafiltration machine, and the ultrafiltration component 3 can separate tiny solid pollutants in sewage.

[0024] A temperature sensor is installed inside the heating box 15 to monitor the temperature of the water inside the heating box 15 .

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

[0026] In summary, when the high-pressure water degreasing system is in use, the steel strip enters the infiltration box 7 through the moving-in end, guides the infiltration box 7 through the sinking roller 8, and then moves out of the infiltration box 7 through the moving-out end on the steel strip 4. During the movement of the steel strip 4, high-pressure water is sprayed by the high-pressure water jet 5 to wash away the grease and dirt on the surface of the steel strip 4. Then, the sewage carries the washed grease and dirt through the overflow port 6 into the flat bed paper belt filter 9. The sewage is coarsely filtered by the flat bed paper belt filter 9, and then the sewage is discharged into the first collecting box 10. The sewage enters the ultrafiltration component 3 through the ultrafiltration pump 11, and then enters the second collecting box 12 through the ultrafiltration component 3. Dust and dust in the sewage are separated by the ultrafiltration component 3, and then the sewage enters the second collecting box 12. Then the sewage enters the nanofiltration component 14 through the nanofiltration pump 13, and the grease and dirt in the sewage are separated from the water by the nanofiltration component 14, and then the clean water enters To the inside of the heating box 15, the temperature of the clean water stored in the heating box 15 is detected by the temperature sensor. If the temperature is low, the heater 16 is started to heat the clean water in the heating box 15, and then the clean water is discharged into the first pipe 21 through the high-pressure pump 17 and the pressure regulating valve 18, and then enters the two high-pressure water jets 5 through the first pipe 21. The high-pressure water is sprayed on the surface of the strip steel 4 by the two high-pressure water jets 5 to clean the surface of the strip steel 4. The large particles of dirt separated by the flat bed paper belt filter 9 enter the second pipe 22 through the first pipe 21, and the small particles of dirt separated from the ultrafiltration component 3 are drawn into the second pipe 22 through the ultrafiltration back pressure valve 2. The organic dirt separated from the nanofiltration component 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, and the dirt collected and stored in the oil collection tank 19 can be drawn out by the sewage pump 20 and discharged into the subsequent processing equipment.

[0027] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0029] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

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

Claims

1. A high-pressure water degreasing system, characterized in that: The invention comprises an infiltration box (7), a flat bed paper belt filter (9), a first collection box (10), an ultrafiltration component (3), a second collection box (12), a nanofiltration component (14), a heating box (15), a high pressure pump (17), a pressure regulating valve (18) and an oil collection box (19); a sinking roller (8) is installed inside the infiltration box (7); an inlet end is arranged at the top of the infiltration box (7); a removal end is arranged at the top of the infiltration box (7) and on one side of the inlet end; a strip steel (4) is placed inside the infiltration box (7); two ends of the strip steel (4) respectively pass through the inlet end and the removal end and extend to the infiltration box (7), two high-pressure water knives (5) are fixedly connected inside the infiltration box (7), and the two high-pressure water knives (5) are respectively located on both sides of the strip steel (4). A flat-bed paper belt filter (9) is fixedly connected to the top of the first collecting box (10), and an overflow port (6) is installed on the infiltration box (7). The flat-bed paper belt filter (9) and the overflow port (6) are connected by a pipeline. The discharge end of the flat-bed paper belt filter (9) extends to the inside of the first collecting box (10). The first collecting box (10) is connected to the ultrafiltration component (3) by an ultrafiltration pump (11). The liquid outlet of the ultrafiltration component (3) extends to the inside of the second collection box (12), the second collection box (12) and the nanofiltration component (14) are connected via a nanofiltration pump (13), the liquid outlet of the nanofiltration component (14) extends to the inside of the heating box (15), the heating box (15) and the pressure regulating valve (18) are connected via a high-pressure pump (17), one end of the pressure regulating valve (18) is installed with a first pipeline (21), one end of the first pipeline (21) is connected to the connection end of the two high-pressure water jets (5), the oil collection box (19) is installed with a second pipeline (22), the A fourth pipeline (24) is installed at one end of the second pipeline (22), an ultrafiltration back pressure valve (2) is installed at one end of the fourth pipeline (24), one end of the ultrafiltration back pressure valve (2) is connected to the ultrafiltration component (3), the other end of the second pipeline (22) is connected to the nanofiltration back pressure valve (1), one end of the nanofiltration back pressure valve (1) is connected to the nanofiltration component (14), a third pipeline (23) is installed on the first collecting box (10), one end of the third pipeline (23) is connected to the second pipeline (22), and a sewage pump (20) is fixedly connected to one side of the oil collecting box (19).

2. A high pressure water degreasing system according to claim 1, characterized in that: A heater (16) is installed inside the heating box (15).

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

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

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

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

Images