Purification treatment device for petroleum-containing sewage

Abstract

The utility model discloses a purification treatment device for petroleum-containing sewage, which comprises a treatment box and a collection box positioned on the front side of the treatment box, the outside of the treatment box is fixedly connected with a sewage pipe, the inside of the treatment box is movably provided with a dosing and mixing assembly, and the outside of the dosing and mixing assembly is fixedly provided with an oil absorption assembly; the dosing and mixing assembly comprises guide frames fixedly mounted above the front side and the rear side of the treatment box; according to the purification treatment device for the petroleum-containing sewage, a demulsifying agent is pumped to a shunting and dosing pipe and then is uniformly sprayed into a treatment box through a spray head, a driving motor I drives a reciprocating screw rod to rotate, a sliding frame is driven to transversely reciprocate above the treatment box, the demulsifying agent is uniformly added, and a stirring motor is started to drive a stirring rod to rotate; sewage and a demulsifier in the tank are uniformly stirred, so that the feeding uniformity of the demulsifier and the stirring and mixing uniformity of the demulsifier and the sewage are ensured, and the treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of oilfield wastewater treatment technology, and specifically to a purification and treatment device for oilfield wastewater. Background Technology

[0002] Petrochemical wastewater refers to wastewater discharged from petrochemical plants. This wastewater is high in organic matter, especially hydrocarbons and their derivatives, and contains various heavy metals. Petrochemical wastewater comes from many sources, has diverse components, and is closely related to the production process. Therefore, it is difficult to determine the quality and quantity of the wastewater. Currently, when treating petrochemical wastewater, demulsifiers are generally poured into the wastewater pond to achieve oil-water separation and remove floating oil.

[0003] The existing patent publication number CN222498776U discloses a petrochemical production wastewater treatment device. Petrochemical wastewater can be poured into a wastewater tank through a wastewater pipe, and then a corresponding proportion of demulsifier can be injected into it to carry out oil-water separation. When the oil scraper needs to work, the external rotary motor drives the second belt to rotate. At this time, the fixed frame will move laterally and drive the bottom oil scraper to scrape off the floating oil on the top of the wastewater. The floating oil enters the floating oil collection tank along the guide plate for collection.

[0004] In existing technologies, such as those described in the aforementioned patent, demulsifier is added through a demulsifier pipe and mixed by a stirring paddle located in the sewage tank. However, the demulsifier pipe is fixed on one side of the sewage tank, and the stirring paddle is also fixed in position within the sewage tank. This makes it impossible to ensure uniform addition and mixing of the demulsifier, affecting the performance. Furthermore, when scraping oil with a scraper, the water level needs to be adjusted to match the height of the scraper. Since the height of the scraper cannot be adjusted, it is impossible to guarantee the complete removal of floating oil. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a purification and treatment device for oil-containing wastewater, so as to achieve uniform addition of demulsifier and good oil removal effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a purification and treatment device for oily wastewater, comprising a treatment tank and a collection tank located in front of the treatment tank, a wastewater pipe being fixedly connected to the outside of the treatment tank, a dosing and mixing assembly being movably installed inside the treatment tank, and an oil suction assembly being fixedly installed on the outside of the dosing and mixing assembly;

[0007] The dosing and mixing assembly includes guide frames fixedly installed on the upper front and rear sides of the treatment tank. A reciprocating screw is movably installed inside the guide frame. A sliding frame located above the treatment tank is movably installed outside the reciprocating screw. A diversion dosing pipe is fixedly installed on the top of the sliding frame. A nozzle located below the sliding frame is fixedly connected to the bottom of the diversion dosing pipe. A stirring rod symmetrically arranged front and rear is movably installed inside the sliding frame. A support frame is fixedly installed on the top of the sliding frame. A stirring motor connected to one of the stirring rods is fixedly installed on the top of the support frame. A synchronous pulley located inside the support frame is fixedly installed on the top of each stirring rod. A synchronous belt is movably installed outside the synchronous pulley.

[0008] Preferably, a drive motor connected to one of the reciprocating lead screws is fixedly installed on the outer side of the guide frame, and a transmission box is fixedly installed on the side of the guide frame away from the drive motor.

[0009] Preferably, the nozzles are symmetrically distributed below the sliding frame, and a connector is provided on the rear side of the diversion dosing pipe.

[0010] Preferably, the stirring rod is fixedly mounted with stirring blades that are arranged vertically and at equal intervals.

[0011] Preferably, the oil suction assembly includes a telescopic rod fixedly installed at the front of the top of the sliding frame, a lifting plate located below the sliding frame is fixedly connected to the bottom of the telescopic rod, an oil suction pipe is fixedly installed inside the lifting plate, a conveying pipe is fixedly connected to the top of the oil suction pipe, a pump is fixedly connected to the other end of the conveying pipe, and an oil discharge pipe located above the collection box is fixedly connected to the bottom of the pump.

[0012] Preferably, the delivery pipe is a flexible hose made of rubber.

[0013] Preferably, the bottom of the sliding frame is fixedly connected to a limiting frame located below the guide frame, and the pump is fixedly installed inside the limiting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. After pumping the demulsifier to the diversion dosing pipe, it is evenly sprayed into the treatment tank through the nozzle. The drive motor drives the reciprocating screw to rotate, which drives the sliding frame to move horizontally back and forth above the treatment tank to evenly add the demulsifier. The stirring motor is started to drive the stirring rod to rotate, so as to evenly stir the sewage and demulsifier in the tank, ensuring the uniformity of the demulsifier addition and mixing with the sewage, thereby improving the treatment efficiency.

[0016] 2. The telescopic rod can be extended and retracted to raise and lower the lifting plate, thereby adjusting the depth of the oil suction pipe in the treatment box to adapt to oil layers of different depths. The conveying pipe is used to transport the oil absorbed by the oil suction pipe to the pump. The pump provides power to discharge the oil through the oil discharge pipe into the collection box, realizing the separation and collection of oil. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the reciprocating lead screw of this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the drug dosing and mixing component of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the nozzle of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the oil-absorbing component of this utility model.

[0022] In the diagram: 1. Treatment box; 2. Dosing and mixing assembly; 21. Guide frame; 22. Reciprocating screw; 23. Drive motor 1; 24. Sliding frame; 25. Diverting dosing pipe; 26. Nozzle; 27. Stirring rod; 28. Support frame; 29. ​​Stirring motor; 210. Synchronous pulley; 211. Synchronous belt; 212. Transmission box; 213. Stirring blade; 3. Collection box; 4. Oil suction assembly; 41. Telescopic rod; 42. Lifting plate; 43. Oil suction pipe; 44. Conveying pipe; 45. Pump; 46. Oil discharge pipe; 5. Sewage pipe. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides a technical solution: a purification and treatment device for oil-containing wastewater, including a treatment tank 1 and a collection tank 3 located in front of the treatment tank 1. A wastewater pipe 5 is fixedly connected to the outside of the treatment tank 1. A dosing and mixing assembly 2 is movably installed inside the treatment tank 1. An oil suction assembly 4 is fixedly installed outside the dosing and mixing assembly 2. The dosing and mixing assembly 2 includes a guide frame 21 fixedly installed on the upper front and rear sides of the treatment tank 1. A reciprocating screw 22 is movably installed inside the guide frame 21. A sliding frame 24 located above the treatment tank 1 is movably installed outside the reciprocating screw 22. A diversion dosing pipe 25 is fixedly installed on the top of the sliding frame 24. A nozzle 26 located below the sliding frame 24 is fixedly connected to the bottom of the diversion dosing pipe 25. A front and rear nozzle 26 is movably installed inside the sliding frame 24. Symmetrically arranged stirring rods 27, a support frame 28 is fixedly installed on the top of the sliding frame 24, and a stirring motor 29 connected to one of the stirring rods 27 is fixedly installed on the top of the support frame 28. A synchronous pulley 210 located inside the support frame 28 is fixedly installed on the top of each stirring rod 27. A synchronous belt 211 is movably installed on the outside of the synchronous pulley 210. After pumping the demulsifier to the diversion dosing pipe 25, it is evenly sprayed into the treatment tank 1 through the nozzle 26. The drive motor 23 drives the reciprocating screw 22 to rotate, driving the sliding frame 24 to move laterally back and forth above the treatment tank 1 to evenly add the demulsifier. The stirring motor 29 is started to drive the stirring rods 27 to rotate, so as to evenly stir the sewage and demulsifier in the tank, ensuring the uniformity of the demulsifier addition and mixing with the sewage, and improving the treatment efficiency.

[0025] A drive motor 23 connected to one of the reciprocating lead screws 22 is fixedly installed on the outer side of the guide frame 21. A transmission box 212 is fixedly installed on the side of the guide frame 21 away from the drive motor 23. The end of the reciprocating lead screw 22 is provided with a sprocket and chain located in the transmission box 212 for transmitting power. The drive motor 23 drives one of the reciprocating lead screws 22 to rotate, and the sprocket and chain drive the other reciprocating lead screw 22 to rotate, so as to realize the synchronous rotation of the two reciprocating lead screws 22. The drive sliding frame 24 moves laterally back and forth stably inside the guide frame 21 to ensure that the demulsifier is evenly sprayed to all corners of the treatment tank 1, while uniformly stirring and mixing, improving the distribution uniformity of the demulsifier and improving the efficiency and quality of sewage treatment.

[0026] The nozzles 26 are located below the sliding frame 24 and are symmetrically distributed front and back. A connector is provided on the rear side of the diversion dosing pipe 25. The connector is used to connect to the external demulsifier supply pipe to ensure that the demulsifier can be stably supplied to the diversion dosing pipe 25. The demulsifier is evenly distributed to each nozzle 26 through the diversion dosing pipe 25, so as to achieve precise dosing and mixing of the demulsifier and improve the efficiency of sewage treatment.

[0027] The stirring rod 27 is fixedly equipped with vertically equidistant stirring blades 213. Driven by the stirring rod 27, the vertically equidistant stirring blades 213 stir the sewage in the treatment tank 1, so that the sewage and the demulsifier in the treatment tank 1 are fully mixed, and the demulsifier decomposes and removes the oil in the sewage.

[0028] Please see Figure 1 , Figure 2 and Figure 5 The oil suction assembly 4 includes a telescopic rod 41 fixedly installed at the top front of the sliding frame 24. A lifting plate 42 located below the sliding frame 24 is fixedly connected to the bottom of the telescopic rod 41. An oil suction pipe 43 is fixedly installed inside the lifting plate 42. A conveying pipe 44 is fixedly connected to the top of the oil suction pipe 43. A pump 45 is fixedly connected to the other end of the conveying pipe 44. An oil discharge pipe 46 located above the collection box 3 is fixedly connected to the bottom of the pump 45. The telescopic end of the telescopic rod 41 is fixedly connected to the top of the lifting plate 42. The connection allows the lifting plate 42 to be raised and lowered by the telescopic movement of the telescopic rod 41, thereby adjusting the depth of the oil suction pipe 43 in the processing tank 1 to adapt to oil layers of different depths. The conveying pipe 44 is used to transport the oil absorbed by the oil suction pipe 43 to the pump 45. The pump 45 provides power to discharge the oil into the collection tank 3 through the oil discharge pipe 46, realizing the separation and collection of oil. An oil suction port is provided at the bottom of the oil suction pipe 43, and a filter screen can be installed at the oil suction port to prevent impurities from entering the oil suction pipe 43.

[0029] The delivery pipe 44 is a flexible hose made of rubber. It has good flexibility and corrosion resistance and can adapt to bending at different angles and directions.

[0030] The bottom of the sliding frame 24 is fixedly connected to a limiting frame located below the guide frame 21. The pump 45 is fixedly installed inside the limiting frame. The design of the limiting frame can effectively fix the pump 45 and prevent it from shaking or shifting during operation, thus ensuring the stability of oil separation and collection.

[0031] Working principle: During use, oily wastewater is injected into the treatment tank 1 through the wastewater pipe 5. Then, the demulsifier pipeline is connected to the connector on the outside of the diversion dosing pipe 25. The demulsifier is pumped into the diversion dosing pipe 25 and then diverted through the diversion dosing pipe 25 to be sprayed into the treatment tank 1 from the nozzle 26 located below the sliding frame 24. At the same time, the drive motor 23 is controlled to drive the connected reciprocating screw 22 to rotate. The reciprocating screw 22 is located in the transmission box 212 through the guide frames 21 on both the front and rear sides. The end is equipped with a sprocket and chain drive, which synchronously drives the reciprocating screws 22 on the front and rear sides to rotate, thereby driving the sliding frame 24 to move laterally and reciprocally above the treatment tank 1. During the movement, the demulsifier is evenly added into the treatment tank 1. During the process, the stirring motor 29 is started to drive the stirring rod 27 connected to it to rotate. The two stirring rods 27 are driven by the synchronous wheel 210 and the synchronous belt 211 to ensure synchronous rotation. During the movement, the sewage and demulsifier at different positions in the treatment tank 1 are evenly stirred to ensure the uniformity of demulsifier addition and stirring.

[0032] After the oil floats to the surface, the lifting plate 42 can be raised and lowered by controlling the telescopic rod 41. The lifting plate 42 causes the oil suction pipe 43 to rise and fall inside the treatment tank 1, so that the height of the oil suction pipe 43 is adjusted according to the oil level. The oil suction pipe 43 is inserted into the oil. By turning on the pump 45, the oil is drawn from the oil suction pipe 43 through the delivery pipe 44 and discharged into the collection tank 3 through the discharge pipe 46. The above is the working process of the whole device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] 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 purification and treatment device for oil-containing wastewater, comprising a treatment tank (1) and a collection tank (3) located in front of the treatment tank (1), characterized in that: The treatment tank (1) is fixedly connected to the outside of a sewage pipe (5), and a dosing and mixing assembly (2) is movably installed inside the treatment tank (1). An oil suction assembly (4) is fixedly installed outside the dosing and mixing assembly (2). The dosing and mixing assembly (2) includes a guide frame (21) fixedly installed on the upper front and rear sides of the treatment box (1). A reciprocating screw (22) is movably installed inside the guide frame (21). A sliding frame (24) located above the treatment box (1) is movably installed outside the reciprocating screw (22). A diversion dosing pipe (25) is fixedly installed on the top of the sliding frame (24). A nozzle (26) located below the sliding frame (24) is fixedly connected to the bottom of the diversion dosing pipe (25). A stirring rod (27) symmetrically arranged front and rear is movably installed inside the sliding frame (24). A support frame (28) is fixedly installed on the top of the sliding frame (24). A stirring motor (29) connected to one of the stirring rods (27) is fixedly installed on the top of the support frame (28). A synchronous pulley (210) located inside the support frame (28) is fixedly installed on the top of each stirring rod (27). A synchronous belt (211) is movably installed outside the synchronous pulley (210).

2. The purification and treatment device for oil-containing wastewater according to claim 1, characterized in that: A drive motor (23) connected to one of the reciprocating lead screws (22) is fixedly installed on the outside of the guide frame (21), and a transmission box (212) is fixedly installed on the side of the guide frame (21) away from the drive motor (23).

3. The purification and treatment device for oil-containing wastewater according to claim 1, characterized in that: The nozzle (26) is located below the sliding frame (24) and is symmetrically distributed front and back. A connector is provided on the rear side of the diversion dosing pipe (25).

4. The purification and treatment device for oil-containing wastewater according to claim 1, characterized in that: The stirring rod (27) is fixedly mounted with stirring blades (213) arranged vertically and at equal intervals.

5. The purification and treatment device for oil-containing wastewater according to claim 1, characterized in that: The oil suction assembly (4) includes a telescopic rod (41) fixedly installed at the front of the top of the sliding frame (24). The bottom of the telescopic rod (41) is fixedly connected to a lifting plate (42) located below the sliding frame (24). An oil suction pipe (43) is fixedly installed inside the lifting plate (42). A conveying pipe (44) is fixedly connected to the top of the oil suction pipe (43). A pump (45) is fixedly connected to the other end of the conveying pipe (44). An oil discharge pipe (46) located above the collection box (3) is fixedly connected to the bottom of the pump (45).

6. The purification and treatment device for oil-containing wastewater according to claim 5, characterized in that: The delivery pipe (44) is a flexible hose made of rubber.

7. The purification and treatment device for oil-containing wastewater according to claim 5, characterized in that: The bottom of the sliding frame (24) is fixedly connected to a limiting frame located below the guide frame (21), and the pump (45) is fixedly installed inside the limiting frame.

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