Filtering device for oil-containing industrial wastewater treatment

Abstract

The utility model discloses a filtering device for oil-containing industrial wastewater treatment, which comprises a shell, one side of the shell is connected with a double-channel sewage inlet pipe, an impurity filtering structure is arranged in the double-channel sewage inlet pipe, a sewage cavity communicated with the double-channel sewage inlet pipe is arranged in the shell, and a stirring paddle shaft is mounted in the sewage cavity. According to the filtering device for treating the oil-containing industrial wastewater, intelligent control is carried out by utilizing the density difference of oil and water. When oil liquid with small density flows through, the second piston block cannot be effectively jacked up, so that the second travel switch cannot be triggered; when the water with the large density flows through, a second piston block can be jacked to move upwards, a second travel switch is triggered, and therefore a second electromagnetic valve is started to plug the oil suction pipe. The mechanism ensures the high efficiency and accuracy of the oil-water separation process, so that the whole wastewater treatment process is more environment-friendly and energy-saving.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial wastewater treatment equipment, specifically a filtration device for treating oily industrial wastewater. Background Technology

[0002] Industrial wastewater refers to water bodies containing various harmful substances generated during industrial production processes. This wastewater typically contains industrial raw materials, intermediate products, by-products, and pollutants generated during production that are lost with the water. These pollutants may include chemicals, heavy metals, and organic matter, posing a threat to the environment and human health.

[0003] Oil and impurities are particularly common in industrial wastewater, especially in industries such as petroleum, chemical, steel, and machinery manufacturing. The presence of these oils and impurities complicates wastewater treatment, as they not only affect water quality but can also interfere with subsequent treatment processes. Therefore, effective separation and treatment of this industrial wastewater is crucial.

[0004] Filtration devices play a crucial role in industrial wastewater treatment, removing suspended solids, grease, and other impurities from wastewater through physical means.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing filtration devices. Utility Model Content

[0006] This utility model addresses the problem that existing technical solutions are too simplistic by providing a filtration device for treating oily industrial wastewater that is significantly different from existing technologies, thus solving the problems mentioned in the background.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a filtration device for treating oily industrial wastewater, comprising a housing, a dual-channel sewage inlet pipe connected to one side of the housing, and an impurity filtration structure provided inside the dual-channel sewage inlet pipe; a sewage chamber connected to the dual-channel sewage inlet pipe inside the housing, and an agitator shaft installed inside the sewage chamber; a water outlet pipe connected to the bottom of the sewage chamber; and an oil storage chamber connected to the side of the sewage chamber, which is located inside the housing; a float plate provided inside the oil storage chamber; a scale rod connected to one side of the float plate, with the upper end of the scale rod penetrating the top of the housing; an oil suction pipe connected to the other side of the float plate, and an external storage container connected to the other end of the oil suction pipe; and a monitoring structure provided on the oil suction pipe.

[0008] Preferably, the two ends of the dual-channel sewage inlet pipe are connected to the sewage chamber and the water pump, respectively, and the middle area of ​​the dual-channel sewage inlet pipe is divided into two branch pipes, and the impurity filtration structure is set in the area of ​​the two branch pipes.

[0009] Preferably, the impurity filtration structure includes a mesh filter plate, a collection box, a fan-shaped brush disc, a connecting cylinder, a first piston block, a first pressure spring, a T-shaped connecting rod, a first limit switch, and a solenoid valve. Several mesh filter plates are evenly spaced within the two branch pipes of the dual-channel sewage inlet pipe. Each mesh filter plate in the dual-channel sewage inlet pipe has a fan-shaped brush disc installed on the side away from the housing. A collection box is installed outside the dual-channel sewage inlet pipe below the fan-shaped brush disc. A connecting cylinder is connected to the outer wall of the dual-channel sewage inlet pipe in the area between the housing and the mesh filter plate. A first piston block is located inside the connecting cylinder, with its lower end inside the dual-channel sewage inlet pipe. A first pressure spring connects the first piston block to the connecting cylinder, and a T-shaped connecting rod is connected to the upper end of the first piston block, with the upper end of the T-shaped connecting rod penetrating the connecting cylinder. A first limit switch is installed on the outer wall of the dual-channel sewage inlet pipe above the connecting cylinder via a bracket. The first limit switch is electrically connected to a solenoid valve, and the solenoid valve is installed at the intersecting end of the dual-channel sewage inlet pipe away from the housing.

[0010] Preferably, the first piston block is located on the side of the inner end of the dual-channel sewage inlet pipe near the mesh filter plate, and the pore size of the mesh filter plate in the dual-channel sewage inlet pipe decreases sequentially from the distance from the shell to the distance from the shell.

[0011] Preferably, the monitoring structure includes an installation cylinder, an adjusting screw, an adjusting plate, a second pressure spring, a second piston block, a cover, a magnetic plate, a return spring, a second limit switch, and a second solenoid valve. The installation cylinder is installed on the outer wall of the oil suction pipe, and an adjusting screw is threaded onto the installation cylinder. An adjusting plate is rotatably connected to the inner end of the adjusting screw, and a second pressure spring is connected to the bottom of the adjusting plate. A second piston block is connected to the lower end of the second pressure spring, and the lower end of the second piston block is located inside the oil suction pipe. A cover is connected to the outer wall of the installation cylinder, and a magnetic plate is slidably connected inside the cover. A return spring is connected between the magnetic plate and the cover. The end of the magnetic plate is fitted and connected to the second limit switch installed on the outer wall of the oil suction pipe, and the second limit switch is electrically connected to the second solenoid valve, which is installed inside the oil suction pipe.

[0012] Preferably, the second piston block is inclined at the inner end of the oil suction pipe near the mounting cylinder, and the second piston block at the inner end of the mounting cylinder is a magnetic block with the same magnetic pole as the magnetic plate.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This filtration device for treating oily industrial wastewater, through the dual-channel wastewater inlet pipe and impurity filtration structure, can efficiently separate and filter solid impurities in wastewater. This design not only achieves precise classification and collection of impurity particles, but also continuously and automatically cleans the mesh filter plates through a water-driven rotating fan-blade brush, ensuring that the filter plates always maintain optimal filtration efficiency. When the mesh filter plate in a certain channel cannot be automatically cleaned due to impurities clogging, the water flow in that channel will decrease, failing to effectively lift the first piston block, thereby triggering the first limit switch. This chain reaction causes the solenoid valve to activate, guiding the wastewater from the dual-channel inlet pipe to another channel for filtration and separation, thus allowing personnel to maintain and clean the clogged channel without affecting the overall wastewater treatment process.

[0014] The design, consisting of a wastewater chamber, a stirring paddle shaft, a water outlet pipe, and an oil storage chamber, allows wastewater to enter the wastewater chamber. The rotation of the stirring paddle shaft generates centrifugal force, causing the oil to flow outwards and concentrate in the oil storage chamber, while the wastewater is smoothly discharged through the water outlet pipe. A float plate is also included to ensure that the end of the oil suction pipe is always positioned above the oil surface in the oil storage chamber, effectively sucking up the less dense oil that floats on the surface, further improving the efficiency of oil-water separation.

[0015] By monitoring the structure, intelligent control is achieved using the density difference between oil and water. When the less dense oil flows through, it cannot effectively push up the second piston block, and the second limit switch will not be triggered. However, when the more dense water flows through, it can push the second piston block upward, triggering the second limit switch, which in turn activates the second solenoid valve to block the oil suction pipe. This mechanism ensures the high efficiency and accuracy of the oil-water separation process, making the entire wastewater treatment process more environmentally friendly and energy-saving. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the dual-channel sewage inlet pipe of this utility model;

[0019] Figure 4 This is a front view structural diagram of the present utility model.

[0020] In the diagram: 1. Shell; 2. Dual-channel sewage inlet pipe; 3. Impurity filtration structure; 301. Mesh filter plate; 302. Collection box; 303. Fan blade brush; 304. Connecting cylinder; 305. First piston block; 306. First pressure spring; 307. T-shaped connecting rod; 308. First limit switch; 309. Solenoid valve; 4. Sewage chamber; 5. Agitator shaft; 6. Water outlet pipe; 7. Oil storage chamber; 8. Float plate; 9. Scale rod; 10. Oil suction pipe; 11. Monitoring structure; 1101. Mounting cylinder; 1102. Adjusting screw; 1103. Adjusting plate; 1104. Second pressure spring; 1105. Second piston block; 1106. Cover; 1107. Magnetic plate; 1108. Reset spring; 1109. Second limit switch; 1110. Second solenoid valve. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a filtration device for treating oily industrial wastewater, comprising a shell 1, a dual-channel wastewater inlet pipe 2, an impurity filtration structure 3, a mesh filter plate 301, a collection box 302, a fan blade brush plate 303, a connecting cylinder 304, a first piston block 305, a first pressure spring 306, a T-shaped connecting rod 307, a first limit switch 308, a solenoid valve 309, a wastewater chamber 4, a stirring paddle shaft 5, a water outlet pipe 6, an oil storage chamber 7, a float plate 8, a scale rod 9, an oil suction pipe 10, a monitoring structure 11, a mounting cylinder 1101, an adjusting screw 1102, an adjusting plate 1103, a second pressure spring 1104, a second piston block 1105, a cover 1106, a magnetic plate 1107, and a return spring 11. 08. Second limit switch 1109. Second solenoid valve 1110. A dual-channel sewage inlet pipe 2 is connected to one side of the housing 1, and an impurity filter structure 3 is provided inside the dual-channel sewage inlet pipe 2. A sewage chamber 4 connected to the dual-channel sewage inlet pipe 2 is provided inside the housing 1, and an agitator shaft 5 is installed inside the sewage chamber 4. A water outlet pipe 6 is connected to the bottom of the sewage chamber 4, and an oil storage chamber 7 is connected to the side of the sewage chamber 4. The oil storage chamber 7 is located inside the housing 1. A float plate 8 is provided inside the oil storage chamber 7, and a scale rod 9 is connected to one side of the float plate 8. The upper end of the scale rod 9 penetrates the top of the housing 1. An oil suction pipe 10 is connected to the other side of the float plate 8, and the other end of the oil suction pipe 10 is connected to an external storage container device. A monitoring structure 11 is provided on the oil suction pipe 10.

[0023] The two ends of the dual-channel sewage inlet pipe 2 are connected to the sewage chamber 4 and the water pump, respectively. The middle area of ​​the dual-channel sewage inlet pipe 2 is set as two branch pipes, and the impurity filtration structure 3 is set in the area of ​​the two branch pipes.

[0024] The impurity filtration structure 3 includes a mesh filter plate 301, a collection box 302, a fan-shaped brush disc 303, a connecting cylinder 304, a first piston block 305, a first pressure spring 306, a T-shaped connecting rod 307, a first limit switch 308, and a solenoid valve 309. Several mesh filter plates 301 are evenly spaced within the two branch pipes of the dual-channel sewage inlet pipe 2. Each mesh filter plate 301 in the dual-channel sewage inlet pipe 2 has a fan-shaped brush disc 303 installed on the side away from the housing 1. A collection box 302 is installed outside the dual-channel sewage inlet pipe 2 below the fan-shaped brush disc 303. The outer wall of the dual-channel sewage inlet pipe 2 is connected to the area between the housing 1 and the mesh filter plate 301. There is a connecting cylinder 304, and a first piston block 305 is provided inside the connecting cylinder 304. The lower end of the first piston block 305 is located inside the dual-channel sewage inlet pipe 2. A first pressure spring 306 is connected between the first piston block 305 and the connecting cylinder 304. A T-shaped connecting rod 307 is connected to the upper end of the first piston block 305. The upper end of the T-shaped connecting rod 307 passes through the connecting cylinder 304. A first limit switch 308 is installed on the outer wall of the dual-channel sewage inlet pipe 2 above the connecting cylinder 304 via a bracket. The first limit switch 308 is electrically connected to a solenoid valve 309. The solenoid valve 309 is installed at the intersection end of the dual-channel sewage inlet pipe 2 away from the housing 1.

[0025] The first piston block 305 is located on the side of the inner end of the dual-channel sewage inlet pipe 2 near the mesh filter plate 301 and is set as an inclined surface. The size of the pores of the mesh filter plate 301 in the dual-channel sewage inlet pipe 2 decreases sequentially from the distance away from the shell 1 to the distance closer to the shell 1.

[0026] The monitoring structure 11 includes a mounting cylinder 1101, an adjusting screw 1102, an adjusting plate 1103, a second pressure spring 1104, a second piston block 1105, a cover 1106, a magnetic plate 1107, a reset spring 1108, a second limit switch 1109, and a second solenoid valve 1110. The mounting cylinder 1101 is installed on the outer wall of the oil suction pipe 10, and the adjusting screw 1102 is threaded onto the mounting cylinder 1101. The adjusting screw 1102 is rotatably connected to the adjusting plate 1103 at the inner end of the mounting cylinder 1101, and the second pressure spring 1104 is connected to the bottom of the adjusting plate 1103. The lower end of the second pressure spring 1104 is connected to the second piston block 1105, and the lower end of the second piston block 1105 is located inside the oil suction pipe 10. The outer wall of the mounting cylinder 1101 is connected to the cover 1106, and the magnetic plate 1107 is engaged and slidably connected inside the cover 1106. A reset spring 1108 is connected between the magnetic plate 1107 and the cover 1106. The end of the magnetic plate 1107 is attached to and connected to the second limit switch 1109 installed on the outer wall of the oil suction pipe 10. The second limit switch 1109 is electrically connected to the second solenoid valve 1110, and the second solenoid valve 1110 is installed inside the oil suction pipe 10.

[0027] The second piston block 1105 is located at the inner end of the oil suction pipe 10 near the mounting cylinder 1101 and is set in an inclined position. The second piston block 1105 is located at the inner end of the mounting cylinder 1101 and is set as a magnetic block with the same magnetic pole as the magnetic plate 1107.

[0028] Working principle: According to Figure 1 As shown, wastewater is first supplied to the wastewater chamber 4 inside the housing 1 through a water pump via a dual-channel wastewater inlet pipe 2. During this process, the wastewater enters the channel on one side of the dual-channel wastewater inlet pipe 2 and is filtered by several mesh filter plates 301 with progressively decreasing aperture sizes before entering the wastewater chamber 4. The water flow drives the fan blade brush 303 to rotate, continuously cleaning the mesh filter plates 301. When the mesh filter plates 301 are clogged with impurities and cannot clean themselves, the water flow rate decreases, making it unable to effectively overcome the first pressure spring 3. The pressure of 06 causes the first pressure spring 306 to push the first piston block 305 down into the channel of the dual-channel sewage inlet pipe 2. The movement of the first piston block 305 simultaneously drives the T-shaped connecting rod 307 to trigger the first limit switch 308. After the first limit switch 308 sends a signal, the electrically connected PLC control board controls the first limit switch 308 to rotate, blocking the channel of the dual-channel sewage inlet pipe 2. At the same time, the other channel is opened, allowing the wastewater to be filtered as described above, and the staff can then clean the channel.

[0029] In the sewage chamber 4, the wastewater is driven by the stirring paddle shaft 5 and the oil is separated by centrifugal force. The oil flows to the outside and continuously gathers in the oil storage chamber 7. At this time, the oil suction pipe 10 works to suck the oil in the oil storage chamber 7. With the cooperation of the float plate 8, it is ensured that the end of the oil suction pipe 10 is always at the liquid surface of the oil in the oil storage chamber 7.

[0030] When oil enters the suction pipe 10, its low density prevents it from effectively pushing the second piston block 1105 upward. The oil continues to flow through the bottom or sides of the second piston block 1105 into the collection container within the suction pipe 10. However, when water enters the suction pipe 10, its high density causes the second piston block 1105 to move upward to the mounting cylinder 1101. Under the repulsive force of like poles, the magnetic plate 1107 inside the cover 1106 moves, triggering the second limit switch 1109. The second limit switch 1109 sends a signal, and the PLC control board controls the second solenoid valve 1110 to block the suction pipe 10. This is the working principle of the filter device for treating oily industrial wastewater.

[0031] 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 filtering device for the treatment of industrial wastewater containing oil, comprising a casing (1), characterized in that: The shell (1) is connected with double-channel sewage inlet pipe (2) on one side, and the double-channel sewage inlet pipe (2) is provided with impurity filtering structure (3), the shell (1) is provided with sewage cavity (4) communicated with double-channel sewage inlet pipe (2), and the sewage cavity (4) is provided with stirring paddle shaft (5), and the sewage cavity (4) bottom is communicated with water outlet pipe (6), and the sewage cavity (4) side is communicated with oil storage cavity (7), and the oil storage cavity (7) is arranged in the shell (1), the oil storage cavity (7) is provided with floating plate (8), and the floating plate (8) is connected with scale rod (9) on one side, and the scale rod (9) upper end penetrates the shell (1) top, the floating plate (8) other side is communicated with oil suction pipe (10), and the oil suction pipe (10) other end is communicated with external storage container device, and the oil suction pipe (10) is provided with monitoring structure (11).

2. An oil-containing industrial wastewater treatment filtering device according to claim 1, characterized in that: The double-channel sewage inlet pipe (2) is connected with sewage cavity (4) and water pump at two ends respectively, and the double-channel sewage inlet pipe (2) is divided into two branch pipes in the middle region, and the impurity filtering structure (3) is arranged in the region of the two branch pipes.

3. An oil-containing industrial wastewater treatment filtering device according to claim 2, characterized in that: The impurity filtering structure (3) includes mesh filter plate (301), collection box (302), fan brush disc (303), connecting cylinder (304), first piston block (305), first pressure spring (306), T-shaped connecting rod (307), first travel switch (308), electromagnetic valve (309), a plurality of mesh filter plates (301) are arranged at equal intervals in the two branch pipes in the double-channel sewage inlet pipe (2), and each mesh filter plate (301) is provided with a fan brush disc (303) on the side away from the shell (1), and a collection box (302) is arranged below the fan brush disc (303) outside the double-channel sewage inlet pipe (2), the connecting cylinder (304) is connected to the region between the shell (1) and the mesh filter plate (301) on the outer wall of the double-channel sewage inlet pipe (2), and the first piston block (305) is arranged in the connecting cylinder (304), and the first piston block (305) is arranged in the double-channel sewage inlet pipe (2) at the lower end, the first pressure spring (306) is connected between the first piston block (305) and the connecting cylinder (304), the T-shaped connecting rod (307) is connected to the upper end of the first piston block (305), and the upper end of the T-shaped connecting rod (307) penetrates the connecting cylinder (304), the first travel switch (308) is arranged on the outer wall of the double-channel sewage inlet pipe (2) above the connecting cylinder (304) through a support, the electromagnetic valve (309) is electrically connected to the first travel switch (308), and the electromagnetic valve (309) is arranged at the intersection end of the double-channel sewage inlet pipe (2) away from the shell (1).

4. An oil-containing industrial wastewater treatment filtering device according to claim 3, characterized in that: The first piston block (305) is arranged as an inclined surface on the side close to the mesh filter plate (301) at the inner end of the double-channel sewage inlet pipe (2), and the aperture size of the mesh filter plate (301) in the double-channel sewage inlet pipe (2) decreases from the side away from the shell (1) to the side close to the shell (1).

5. An oil-containing industrial wastewater treatment filtering device according to claim 1, characterized in that: The monitoring structure (11) comprises a mounting cylinder (1101), an adjusting screw rod (1102), an adjusting plate (1103), a second pressure spring (1104), a second piston block (1105), a cover body (1106), a magnetic force plate (1107), a reset spring (1108), a second travel switch (1109) and a second electromagnetic valve (1110), the outer wall of the oil suction pipe (10) is provided with the mounting cylinder (1101), the adjusting screw rod (1102) is threadedly connected to the mounting cylinder (1101), the adjusting screw rod (1102) is rotatably connected to the inner end of the mounting cylinder (1101), the adjusting plate (1103) is connected to the adjusting screw rod (1102), the second pressure spring (1104) is connected to the bottom of the adjusting plate (1103), the second piston block (1105) is connected to the lower end of the second pressure spring (1104), the lower end of the second piston block (1105) is located in the oil suction pipe (10), the outer wall of the mounting cylinder (1101) is connected with the cover body (1106), the magnetic force plate (1107) is slidingly connected to the cover body (1106), the reset spring (1108) is connected between the magnetic force plate (1107) and the cover body (1106), the second travel switch (1109) is connected to the end of the magnetic force plate (1107) and is mounted on the outer wall of the oil suction pipe (10), the second electromagnetic valve (1110) is electrically connected to the second travel switch (1109) and is mounted in the oil suction pipe (10).

6. An oil-containing industrial wastewater treatment filtering device according to claim 5, characterized in that: The inner end of the second piston block (1105) located in the oil suction pipe (10) is provided with an inclined side close to the mounting cylinder (1101), and the inner end of the second piston block (1105) located in the mounting cylinder (1101) is provided with a magnetic block with the same magnetic pole as the magnetic force plate (1107).

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