Sewage foam self-power eliminating device

Abstract

The invention discloses a sewage foam self-power eliminating device which comprises a vertical foam melting barrel, a transition box and a horizontal foam removing box, a water inlet in the middle of a top cover of the vertical foam melting barrel is connected with a wastewater pipeline through a flow guide pipe, a water outlet in the bottom of the vertical foam melting barrel is connected with a water inlet in the top of the transition box, and the horizontal foam removing box is a transversely-arranged box body. A water inlet in one side of the vertical foam melting barrel is connected with a water outlet in the side part of the transition box, a water outlet in the other side of the vertical foam melting barrel is connected with a recovery pool through a closed culvert pipe, a vertical spinning foam conversion device is arranged in the vertical foam melting barrel, and a horizontal spinning foam conversion device is arranged in the horizontal foam cleaning box. Kinetic energy generated by water flow is used for driving the vertical spinning conversion foam device and the horizontal spinning conversion foam device to rotate, and sewage foam is sealed in the device to be dispersed. The device does not consume electric energy and a defoaming agent in the operation process, so that not only can the sewage treatment cost be reduced, but also the secondary influence on the water quality in the treatment process can be effectively avoided.

Description

Technical Field

[0001] This invention relates to a self-powered foam elimination device for sewage, which can achieve defoaming by utilizing only the flow energy of water without adding defoamer or consuming electricity or other energy. It belongs to the field of sewage treatment technology. Background Technology

[0002] Many industrial wastewaters produce a large amount of foam. For example, descaling water from steel rolling mills is prone to foaming due to the cleaning agents, process conditions, and water quality. Discharging such wastewater poses many difficulties for subsequent treatment, and the foam in the wastewater is easily dispersed into the air, causing pollution. Therefore, defoaming treatment is necessary before discharge.

[0003] This utility model patent, application number 202220318896.8, discloses a wastewater foam elimination device, including a storage tank, a high-pressure dust collector and humidifier, a third pipe, and an atomizing nozzle. The storage tank and the high-pressure dust collector and humidifier are connected through a first pipe, and the high-pressure dust collector and humidifier are connected to the third pipe through a second pipe. The third pipe and the second pipe are fixedly connected, and the atomizing nozzle is mounted on the third pipe. The high-pressure dust collector and humidifier pressurizes the defoamer in the storage tank, forming a high-pressure fluid that can be sprayed at high speed from the atomizing nozzle to quickly break up bubbles, keeping the wastewater in a liquid state. By setting a curved nozzle on the atomizing nozzle at a certain angle, the defoamer in the atomizing nozzle can be sprayed out from the nozzle, driving the atomizing nozzle to rotate and increasing the spraying area of ​​the defoamer. The disadvantages of this wastewater foam elimination device are that it consumes electricity and defoamer, which not only increases the cost of wastewater treatment but also has adverse secondary effects on water quality. Furthermore, existing wastewater defoaming methods generally suffer from incomplete defoaming, therefore, improvement is necessary. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a wastewater foam self-power elimination device, thereby reducing wastewater treatment costs and avoiding adverse effects on water quality during the treatment process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A wastewater foam self-power elimination device includes a vertical foaming cylinder, a transition tank, and a horizontal foam clearing tank. The inlet at the center of the top cover of the vertical foaming cylinder is connected to a wastewater pipe via a guide pipe, and the outlet at the bottom of the vertical foaming cylinder is connected to the inlet at the top of the transition tank. The horizontal foam clearing tank is a horizontally placed tank, with one inlet connected to the outlet on the side of the transition tank, and the outlet on the other side connected to a recycling tank via a closed culvert. A vertical self-rotating foaming device is installed inside the vertical foaming cylinder, and a horizontal self-rotating foaming device is installed inside the horizontal foam clearing tank.

[0006] The aforementioned wastewater foam self-power elimination device includes a vertical self-rotating foaming device comprising a vertical wheel axle coaxial with a vertical foaming cylinder. An upper bearing seat bracket is fixed to the inlet in the middle of the top cover of the vertical foaming cylinder, and a lower bearing seat bracket is installed at the inlet at the top of the transition tank. The lower end of the vertical wheel axle is rotatably connected to the lower bearing seat bracket via a lower bearing, and the upper end is rotatably connected to the upper bearing seat bracket via an upper bearing. At least one set of spiral plates and multiple sets of defoaming rotating arms are installed on the side wall of the vertical wheel axle. Each set of spiral plates includes multiple spiral plates evenly distributed around the vertical wheel axle. One end of each spiral plate is fixedly connected to the vertical wheel axle. Multiple sets of defoaming rotating arms are arranged at equal intervals along the axial direction of the vertical wheel axle. Each set of defoaming rotating arms includes multiple defoaming rotating arms perpendicular to the vertical wheel axle and evenly distributed around the vertical wheel axle.

[0007] The aforementioned wastewater foam self-power elimination device has multiple sets of defoaming rods fixed on the inner wall of the vertical foaming cylinder. The multiple sets of defoaming rods and multiple sets of defoaming rotating arms are arranged at intervals. Each set of defoaming rods includes multiple defoaming rods evenly distributed around a vertical wheel axle. One end of each defoaming rod is fixedly connected to the inner wall of the vertical foaming cylinder, and the other end is opposite to the vertical wheel axle.

[0008] The aforementioned wastewater foam self-power elimination device, wherein the horizontal self-rotating defoaming device includes a rectangular frame and a horizontal defoaming mechanism. The rectangular frame is placed vertically and its four sides are respectively embedded in the grooves inside the bottom plate, top plate, and two side plates of the horizontal defoaming tank. The horizontal defoaming mechanism includes a horizontal wheel axle, multiple sets of stirring arms, and four V-shaped axles. The horizontal wheel axle is perpendicular to the water flow direction in the horizontal defoaming tank. The two ends of the horizontal wheel axle are rotatably connected to the two sides of the rectangular frame through bearings. The multiple sets of stirring arms are arranged at equal intervals along the axial direction of the horizontal wheel axle, and each set of stirring arms is evenly distributed around the horizontal wheel axle. One end of the stirring arm is fixedly connected to the horizontal wheel axle. The four V-shaped axles are evenly distributed around the horizontal wheel axle and fixedly connected to the stirring arms. The middle fold line of each V-shaped axle is perpendicular to the axis of the horizontal wheel axle. When the V-shaped axle rotates to its lowest point, the opening faces the direction of the incoming water.

[0009] In the aforementioned wastewater foam self-power elimination device, both the inlet and outlet ends of the closed culvert are horizontal pipes, and the middle of the closed culvert bulges upward to form a herringbone pipe, with the lowest point of the middle of the herringbone pipe being flush with the top of the inlet end of the closed culvert.

[0010] In the aforementioned wastewater foam self-power elimination device, the upper bearing seat bracket is a cross-shaped bracket, the middle part of the upper bearing seat bracket is provided with a groove that matches the upper bearing, and the outer side of the upper bearing seat bracket is fixedly connected to the top cover of the vertical foaming cylinder.

[0011] In the aforementioned wastewater foam self-power elimination device, the lower bearing seat support is a cross-shaped support, the middle of the lower bearing seat support is provided with a groove that matches the lower bearing, and the outer side of the lower bearing seat support is fixedly connected to the transition box or vertical foaming cylinder.

[0012] The aforementioned wastewater foam self-power elimination device has a column coaxial with the vertical wheel axle inside the transition box, and the upper end of the column rests on the bottom of the lower bearing seat bracket.

[0013] In the aforementioned wastewater foam self-power elimination device, the guide pipe is connected to the top cover of the vertical foaming cylinder via a flange, the upper bearing seat bracket is welded to the water inlet in the middle of the top cover, the closed culvert is connected to the horizontal foaming tank via a flange, and the transition box is connected to the horizontal foaming tank and the vertical foaming cylinder via a flange.

[0014] This invention utilizes the kinetic energy generated by water flow to drive both vertical and horizontal self-rotating defoaming devices to disperse wastewater foam within the device. The device consumes no electricity or defoaming agent during operation, thus reducing wastewater treatment costs and effectively preventing secondary impacts on water quality during the treatment process. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a vertical bubble column, in which... Figure 2 (a) is the front view. Figure 2 (b) is a top view; Figure 3 This is a schematic diagram of a vertical self-rotating bubble-forming device, in which... Figure 3 (a) is the front view. Figure 3 (b) is a bottom view; Figure 4 This is a structural schematic diagram of the lower bearing housing support, in which... Figure 4 (a) is the front view. Figure 4 (b) is a top view; Figure 5 This is a structural schematic diagram of the upper bearing housing bracket, in which... Figure 5 (a) is the front view. Figure 5 (b) is a bottom view; Figure 6 This is a schematic diagram of the transition box, in which... Figure 6 (a) is Figure 6 (b) AA section view; Figure 7 This is a structural diagram of a horizontal bubble clearing chamber, in which... Figure 7 (a) is the front view. Figure 7 (b) is a top view; Figure 8 This is a schematic diagram of a horizontal self-rotating bubble-forming device, in which... Figure 8(a) is the front view. Figure 8 (b) is the left view; Figure 9 This is a structural diagram of a horizontal defoaming mechanism, in which... Figure 9 (a) is the front view. Figure 9 (b) is the left view; Figure 10 This is a schematic diagram of a closed culvert, in which... Figure 10 (a) is the front view. Figure 10 (b) is the left view. Figure 10 (c) is a top view. Figure 10 (b) is Figure 10 (c) View from direction B.

[0017] The following are the labels in the diagram: 1. Guide pipe, 2. Vertical foaming cylinder, 3. Vertical self-rotating foaming device, 4. Transition box, 5. Horizontal foaming box, 6. Horizontal self-rotating foaming device, 7. Closed culvert, 8. Upper bearing seat support, 9. Lower bearing seat support, 10. Defoaming rod, 11. Upper bearing, 12. Defoaming rotating arm, 13. Vertical wheel axle, 14. Spiral plate, 15. Lower bearing, 16. Column, 17. Rectangular frame, 18. Horizontal defoaming mechanism, 19. Stirring arm, 20. V-shaped axle, 21. Horizontal wheel axle. Detailed Implementation

[0018] To address the shortcomings of existing technologies, this invention provides a self-powered foam elimination device for wastewater in steel rolling systems. This device eliminates wastewater foam by enclosing it inside the device, preventing foam overflow and solving the problem of incomplete defoaming. Moreover, it operates on its own power using only the kinetic energy generated by the water flow, without consuming electricity or defoaming agents, thus reducing wastewater treatment costs and avoiding secondary impacts on water quality.

[0019] See Figure 1 The present invention mainly includes a guide pipe 1, a vertical bubble cylinder 2, a vertical self-rotating bubble device 3, a transition box 4, a horizontal bubble clearing box 5, a horizontal self-rotating bubble device 6, and a closed culvert 7.

[0020] One end of the guide pipe 1 is connected to the wastewater pipe, and the other end is connected to the inlet in the middle of the top cover of the vertical bubble cylinder 2; the inlet at the top of the transition tank 4 is connected to the outlet at the bottom of the vertical bubble cylinder 2; the horizontal bubble cleaning tank 5 is a horizontally placed tank, with its inlet on one side connected to the outlet on the side of the transition tank 4, and its outlet on the other side connected to the inlet of the closed culvert 7; the outlet of the closed culvert 7 is connected to the recycling tank. The vertical self-rotating bubble device 3 is installed inside the vertical bubble cylinder 2, and the horizontal self-rotating bubble device 6 is installed inside the horizontal bubble cleaning tank 5. Foamy wastewater enters the vertical bubble tank 2 from the guide pipe 1 at the top of the vertical bubble tank 2, and then flows into the recycling tank through the transition box 4, the horizontal bubble clearing box 5 and the closed culvert 7 in sequence. Under the agitation of the vertical self-rotating bubble device 3 and the horizontal self-rotating bubble device 6 in the closed state, the foam is eliminated. Finally, the foam-free wastewater is sent into the recycling tank through the closed culvert 7.

[0021] See Figures 1-3 The vertical self-rotating foaming device 3 includes a vertical wheel shaft 13 coaxial with the vertical foaming cylinder 2. An upper bearing seat bracket 8 is fixed to the water inlet in the middle of the top cover of the vertical foaming cylinder 2. A lower bearing seat bracket 9 is installed at the water inlet at the top of the transition box 4. The lower end of the vertical wheel shaft 13 is rotatably connected to the lower bearing seat bracket 9 through the lower bearing 15, and the upper end is rotatably connected to the upper bearing seat bracket 8 through the upper bearing 11, so that the vertical wheel shaft 13 can rotate freely. At least one set of spiral plates 14 and multiple sets of defoaming rotating arms 12 are installed on the side wall of the vertical wheel shaft 13. Each set of spiral plates 14 includes 3-5 spiral plates 14 evenly distributed around the vertical wheel shaft 13. One end of the spiral plates 14 is fixedly connected to the vertical wheel shaft 13. Each set of spiral plates 14 forms an impeller, which can drive the vertical wheel shaft 13 to rotate under the impact of sewage. Multiple sets of defoaming rotating arms 12 are arranged at equal intervals along the axial direction of the vertical wheel shaft 13. Each set of defoaming rotating arms 12 includes multiple defoaming rotating arms 12 that are perpendicular to the vertical wheel shaft 13 and evenly distributed around the vertical wheel shaft 13. Multiple sets of defoaming rods 10 are fixed on the inner wall of the vertical foaming cylinder 2. The multiple sets of defoaming rods 10 are arranged at intervals with the multiple sets of defoaming rotating arms 12. Each set of defoaming rods 10 includes multiple defoaming rods 10 that are evenly distributed around the vertical wheel shaft 13. One end of each defoaming rod 10 is fixedly connected to the inner wall of the vertical foaming cylinder 2, and the other end is opposite to the vertical wheel shaft 13.

[0022] After the sewage enters the vertical defoaming cylinder 2 through the guide pipe 1, it flows downward under the action of gravity and drives the vertical wheel shaft 13 to rotate through the impeller formed by the spiral plate 14. When the vertical wheel shaft 13 rotates, it drives multiple sets of defoaming rotating arms 12 to rotate. The rotating defoaming rotating arms 12 and the stationary defoaming rod 10 exert a hinge effect on the foam in the vertical defoaming cylinder 2, which disperses the foam floating in the vertical defoaming cylinder 2. This process is the first stage of defoaming.

[0023] See Figure 4 and Figure 5The upper bearing seat bracket 8 is a cross-shaped bracket made of slats. The middle of the upper bearing seat bracket 8 has a groove that matches the upper bearing 11. The outer side of the upper bearing seat bracket 8 is fixedly connected to the top cover of the vertical bubble cylinder 2. The lower bearing seat bracket 9 is also a cross-shaped bracket made of slats. The middle of the lower bearing seat bracket 9 has a groove that matches the lower bearing 15. The outer side of the lower bearing seat bracket 9 is fixedly connected to the transition box 4 (or can be connected to the vertical bubble cylinder 2).

[0024] See Figure 1 and Figure 6 The transition box 4 is equipped with a column 16 coaxial with the vertical wheel axle 13. The upper end of the column 16 rests on the bottom of the lower bearing seat support 9. The function of the column 16 is to support the lower bearing seat support 9 and prevent it from falling under the action of water flow and vertical self-rotating bubble device 3, thereby improving the reliability of the equipment.

[0025] See Figure 1 , Figures 7-9 The horizontal self-rotating defoaming device 6 includes a rectangular frame 17 and a horizontal defoaming mechanism 18. The rectangular frame 17 is placed vertically and its four sides are respectively embedded in the grooves inside the bottom plate, top plate, and two side plates of the horizontal defoaming tank 5. The horizontal defoaming mechanism 18 includes a horizontal wheel shaft 21, multiple sets of stirring arms 19, and four V-shaped axle plates 20. The horizontal wheel shaft 21 is perpendicular to the water flow direction, and its two ends are rotatably connected to the two sides of the rectangular frame 17 through bearings. The multiple sets of stirring arms 19 are arranged at equal intervals along the axial direction of the horizontal wheel shaft 21, and each set of stirring arms 19 is evenly distributed around the horizontal wheel shaft 21. One end of the agitator arm 19 is fixedly connected to the horizontal wheel shaft 21; four V-shaped agitators 20 are evenly distributed around the horizontal wheel shaft 21 and fixedly connected to the adjacent agitator arm 19. The middle fold line of each V-shaped agitator 20 is perpendicular to the axis of the horizontal wheel shaft 21. When the V-shaped agitator 20 rotates to the lowest point (below the horizontal wheel shaft 21), the opening faces the direction of the incoming water. When the V-shaped agitator 20 rotates to the highest point (above the horizontal wheel shaft 21), the opening direction is consistent with the direction of water flow in the horizontal bubble tank 5. When the V-shaped agitator 20 rotates to a medium height (in front of or behind the horizontal wheel shaft 21), the opening faces downward or upward.

[0026] When sewage flows through the horizontal defoaming tank 5, the V-shaped abutment 20 at the lower position is subjected to a greater impact force from the water flow than the V-shaped abutment 20 at the higher position. Under the power of the water, the horizontal defoaming mechanism 18 rotates, and the stirring arm 19 disperses the foam when it rotates. This process is the secondary defoaming.

[0027] See Figure 10In addition to guiding the defoamed wastewater to the recycling tank, the closed culvert 7's structure prevents residual foam in the wastewater from flowing into the recycling tank. Both the inlet and outlet ends of the closed culvert 7 are horizontal pipes, with a V-shaped upward bulge in the middle. The lowest point of the V-shaped pipe is flush with the top of the inlet end. Because the density of air in foam is much less than that of water, foam cannot pass through the closed culvert 7 under the influence of gravity; only the defoamed wastewater can be discharged from the closed culvert 7.

[0028] The guide pipe 1 is connected to the top cover of the vertical bubble cylinder 2 via a flange. The upper bearing seat bracket 8 is welded to the water inlet in the middle of the top cover to support the upper bearing 11. The closed culvert 7 is connected to the horizontal bubble cleaning box 5 via a flange. The transition box 4 is connected to the horizontal bubble cleaning box 5 and the vertical bubble cylinder 2 via a flange. Gaskets are added to the flange faces to prevent leakage.

[0029] This device relies entirely on physical principles to seal and eliminate foam in wastewater. It effectively disperses various types of foam through a vertical primary defoaming stage and a horizontal secondary defoaming stage, confining the foam within the device using a closed culvert. It is suitable for treating various types of industrial wastewater. This device requires no chemical or biological agents and consumes no electricity or other energy sources. Instead, it cleverly utilizes the kinetic energy of flowing water to drive the defoaming device and complete the defoaming process. It incurs no operating costs during operation, making it highly valuable for widespread application.

Claims

1. A self-powered foam elimination device for sewage, characterized in that, The system includes a vertical bubble cylinder (2), a transition box (4), and a horizontal bubble clearing box (5). The inlet of the top cover of the vertical bubble cylinder (2) is connected to the wastewater pipe through a guide pipe (1). The outlet of the bottom of the vertical bubble cylinder (2) is connected to the inlet of the top of the transition box (4). The horizontal bubble clearing box (5) is a horizontally placed box. The inlet on one side is connected to the outlet on the side of the transition box (4), and the outlet on the other side is connected to the recycling tank through a closed culvert (7). A vertical self-rotating bubble device (3) is installed in the vertical bubble cylinder (2), and a horizontal self-rotating bubble device (6) is installed in the horizontal bubble clearing box (5).

2. The wastewater foam self-power elimination device according to claim 1, characterized in that, The vertical self-rotating bubble-forming device (3) includes a vertical wheel axle (13) coaxial with the vertical bubble-forming cylinder (2). An upper bearing seat bracket (8) is fixed to the water inlet in the middle of the top cover of the vertical bubble-forming cylinder (2). A lower bearing seat bracket (9) is installed at the water inlet at the top of the transition box (4). The lower end of the vertical wheel axle (13) is rotatably connected to the lower bearing seat bracket (9) through a lower bearing (15), and the upper end is rotatably connected to the upper bearing seat bracket (8) through an upper bearing (11). On the side of the vertical wheel axle (13) At least one set of spiral plates (14) and multiple sets of defoaming rotating arms (12) are installed on the wall. Each set of spiral plates (14) includes multiple spiral plates (14) evenly distributed around the vertical wheel shaft (13). One end of the spiral plate (14) is fixedly connected to the vertical wheel shaft (13). Multiple sets of defoaming rotating arms (12) are arranged at equal intervals along the axial direction of the vertical wheel shaft (13). Each set of defoaming rotating arms (12) includes multiple defoaming rotating arms (12) that are perpendicular to the vertical wheel shaft (13) and evenly distributed around the vertical wheel shaft (13).

3. The wastewater foam self-power elimination device according to claim 2, characterized in that, The inner wall of the vertical foaming cylinder (2) is fixed with multiple sets of defoaming rods (10). The multiple sets of defoaming rods (10) and multiple sets of defoaming rotating arms (12) are arranged at intervals. Each set of defoaming rods (10) includes multiple defoaming rods (10) evenly distributed around the vertical wheel axle (13). One end of each defoaming rod (10) is fixedly connected to the inner wall of the vertical foaming cylinder (2), and the other end is opposite to the vertical wheel axle (13).

4. A wastewater foam self-power elimination device according to any one of claims 1-3, characterized in that, The horizontal self-rotating foaming device (6) includes a rectangular frame (17) and a horizontal defoaming mechanism (18). The rectangular frame (17) is placed vertically and its four sides are respectively embedded in the grooves inside the bottom plate, top plate and two side plates of the horizontal foaming tank (5). The horizontal defoaming mechanism (18) includes a horizontal wheel axle (21), multiple sets of stirring arms (19) and four V-shaped axles (20). The horizontal wheel axle (21) is perpendicular to the water flow direction in the horizontal foaming tank (5). The two ends of the horizontal wheel axle (21) are respectively connected to the rectangular frame through bearings. The frame (17) is rotatably connected on both sides. Multiple sets of agitator arms (19) are arranged at equal intervals along the axial direction of the horizontal wheel shaft (21). Each set of agitator arms (19) is evenly distributed around the horizontal wheel shaft (21). One end of the agitator arm (19) is fixedly connected to the horizontal wheel shaft (21). Four V-shaped axle plates (20) are evenly distributed around the horizontal wheel shaft (21) and fixedly connected to the agitator arms (19). The fold line in the middle of each V-shaped axle plate (20) is perpendicular to the axis of the horizontal wheel shaft (21). When the V-shaped axle plate (20) rotates to the lowest point, the opening faces the direction of the incoming water.

5. A wastewater foam self-power elimination device according to claim 4, characterized in that, The inlet and outlet of the closed culvert (7) are both horizontal pipes. The middle of the closed culvert (7) is raised upward to form a herringbone pipe. The lowest position of the middle part of the herringbone pipe is flush with the top of the inlet of the closed culvert (7).

6. A wastewater foam self-power elimination device according to claim 2 or 3, characterized in that, The upper bearing seat bracket (8) is a cross-shaped bracket. The middle part of the upper bearing seat bracket (8) is provided with a groove that matches the upper bearing (11). The outer side of the upper bearing seat bracket (8) is fixedly connected to the top cover of the vertical bubble cylinder (2).

7. A wastewater foam self-power elimination device according to claim 6, characterized in that, The lower bearing seat bracket (9) is a cross-shaped bracket. The middle part of the lower bearing seat bracket (9) is provided with a groove that matches the lower bearing (15). The outer side of the lower bearing seat bracket (9) is fixedly connected to the transition box (4) or the vertical bubble cylinder (2).

8. A wastewater foam self-power elimination device according to claim 7, characterized in that, The transition box (4) is equipped with a column (16) coaxial with the vertical wheel axle (13), and the upper end of the column (16) rests on the bottom of the lower bearing seat bracket (9).

9. A wastewater foam self-power elimination device according to claim 8, characterized in that, The guide pipe (1) is connected to the top cover of the vertical bubble cylinder (2) through a flange. The upper bearing seat bracket (8) is welded to the water inlet in the middle of the top cover. The closed culvert (7) is connected to the horizontal bubble clearing box (5) through a flange. The transition box (4) is connected to the horizontal bubble clearing box (5) and the vertical bubble cylinder (2) through a flange.

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