Oil field sewage multi-stage filtering treatment device with rotational flow pre-separation function

Abstract

The utility model relates to the technical field of oil field sewage treatment, and discloses an oil field sewage multi-stage filtration treatment device with rotational flow pre-separation, which comprises a treatment tank and a sealing cover, the top of the treatment tank is provided with the sealing cover, the inside of the treatment tank is provided with a filtration assembly, one side of the treatment tank is provided with a dosing assembly, and the other side of the treatment tank is provided with a spray nozzle. A stirring assembly is arranged at the bottom of the treatment tank, the other side of the treatment tank is communicated with a liquid outlet pipe, and a one-way valve is arranged on the outer side of the liquid outlet pipe; the sampling assembly is arranged on the outer side of the liquid outlet pipe, and the sampling assembly comprises a flow dividing pipe communicated with the outer side of the liquid outlet pipe; according to the sewage sampling device, sewage flows into the flow dividing pipe from the liquid outlet pipe by opening the adjusting valve on the flow dividing pipe and flows out to the sampling cup along the flow dividing pipe, and the amount of the sampled sewage is weighed by the electronic scale, so that the amount of the sampled sewage is conveniently and accurately controlled, excessive or insufficient sampling is avoided, and subsequent detection work is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of oilfield wastewater treatment technology, specifically to a multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation. Background Technology

[0002] Oilfield development generates a large amount of wastewater containing toxic minerals. Direct discharge of this wastewater poses a significant threat to the environment and human health. Therefore, wastewater treatment equipment is necessary. Wastewater treatment equipment is a device or system used to treat wastewater, which can transform wastewater containing various pollutants into water resources that can be discharged or reused.

[0003] According to the utility model patent CN221906056U, a sewage filtration device for oilfield development with anti-clogging properties, which relates to the field of oilfield development technology, its beneficial effects are as follows: a stirring device is installed inside the shell. When sewage enters the shell from the inlet, the motor drives the stirring rod to rotate and stir the sewage. A scraper is fixedly connected to the outside of the stirring rod. The outer side of the scraper is in contact with the inner side of the shell and the bottom surface of the top cover is in contact with the first filter plate, which facilitates the scraping off of dirt adhering to the surface of the shell and the first filter screen, thus avoiding clogging.

[0004] Post-filtration testing of oilfield wastewater is crucial, as it is a key step in ensuring the quality of oilfield wastewater treatment and environmental safety. For example, although the above-mentioned technology allows for direct sampling through the outlet pipe after wastewater filtration, the large flow rate of the outlet pipe can easily lead to excessive liquid overflow during sampling. This makes it difficult to accurately control the amount of wastewater sampled, which can affect subsequent testing work. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation, comprising a treatment tank and a sealing cover, wherein the top of the treatment tank is provided with a sealing cover, the inside of the treatment tank is provided with a filtration assembly, one side of the treatment tank is provided with a drug delivery assembly, the bottom of the treatment tank is provided with a stirring assembly, the other side of the treatment tank is connected to an outlet pipe, and a one-way valve is provided on the outside of the outlet pipe;

[0007] A sampling assembly is disposed on the outside of the outlet pipe. The sampling assembly includes a diversion pipe connected to the outside of the outlet pipe. A regulating valve is disposed on the outside of the diversion pipe. The diversion pipe is located between the treatment tank and the one-way valve. A connecting plate is fixedly connected to one side of the treatment tank. An electronic scale is disposed on the top of the connecting plate. A sampling cup is disposed on the top of the electronic scale.

[0008] Preferably, the filtration assembly includes a hydrocyclone fixed to the inlet of the treatment tank via a flange, and the interior of the treatment tank is respectively provided with a first activated carbon filter and a second activated carbon filter.

[0009] Preferably, the filtration assembly further includes limiting blocks fixed to the outer sides of the first activated carbon filter and the second activated carbon filter respectively, and the inner wall of the treatment tank is provided with a limiting groove.

[0010] Preferably, the drug delivery assembly includes a drug storage tank disposed on one side of the treatment tank via a support plate, and the top of the drug storage tank is connected to a drug addition port.

[0011] Preferably, the drug delivery assembly further includes a delivery pump disposed on the top of the drug storage tank. The delivery pump has a liquid extraction pipe at its pumping end and a spray pipe at its draining end. One end of the liquid extraction pipe is connected to the top of the drug storage tank, and the other end of the liquid extraction pipe is connected to the inner wall of the treatment tank.

[0012] Preferably, the stirring assembly includes a protective shell fixed to the bottom of the processing tank, a motor is provided on one side of the protective shell, a drive wheel is fixedly connected to the output end of the motor, a driven wheel is meshed with the outer side of the drive wheel, a connecting shaft is fixedly connected to the inner ring of the driven wheel, and the bottom end of the connecting shaft is rotatably connected to the inner wall of the protective shell through a bearing seat.

[0013] Preferably, the stirring assembly further includes a fixed shaft fixed to the top of the connecting shaft, and a stirring paddle is fixedly connected to the outside of the fixed shaft.

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

[0015] This invention uses a filtration component to separate oil, water, and impurities from wastewater. The separated wastewater enters a treatment tank, where a dosing component delivers disinfectant to the wastewater. A stirring component is then activated to agitate the wastewater, ensuring thorough mixing of the disinfectant and improving disinfection efficiency. After filtration, a regulating valve on the diversion pipe is opened, allowing the wastewater to flow from the outlet pipe into the diversion pipe and outwards to a sampling cup. An electronic scale is used to weigh the sampled wastewater, facilitating precise control of the sample volume and preventing over- or under-sampling, thus aiding subsequent testing. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation provided by this utility model;

[0017] Figure 2 Schematic diagram of the structure of the drug delivery component and sampling component provided by this utility model;

[0018] Figure 3 This is a partial cross-sectional structural schematic diagram provided for this utility model;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Processing tank; 2. Sealing cap; 3. Filter assembly; 31. Hydrocyclone; 32. First activated carbon filter; 33. Second activated carbon filter; 34. Limiting block; 35. Limiting groove; 4. Dosing assembly; 41. Drug storage tank; 42. Delivery pump; 43. Liquid extraction pipe; 44. Spraying pipe; 5. Stirring assembly; 51. Protective shell; 52. Motor; 53. Drive wheel; 54. Driven wheel; 55. Connecting shaft; 56. Fixed shaft; 57. Stirring paddle; 6. Liquid outlet pipe; 7. Sampling assembly; 71. Diverter pipe; 72. Regulating valve; 73. Connecting plate; 74. Electronic scale; 75. Sampling cup; 8. Check 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 Figures 1-4 As shown, a multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation includes a treatment tank 1 and a sealing cover 2. The top of the treatment tank 1 is provided with the sealing cover 2, the inside of the treatment tank 1 is provided with a filter assembly 3, one side of the treatment tank 1 is provided with a drug delivery assembly 4, the bottom of the treatment tank 1 is provided with a stirring assembly 5, the other side of the treatment tank 1 is connected to an outlet pipe 6, and a one-way valve 8 is provided on the outside of the outlet pipe 6.

[0023] The sampling component 7 is located outside the outlet pipe 6. The sampling component 7 includes a diversion pipe 71 connected to the outside of the outlet pipe 6. A regulating valve 72 is provided on the outside of the diversion pipe 71. The diversion pipe 71 is located between the treatment tank 1 and the one-way valve 8. A connecting plate 73 is fixedly connected to one side of the treatment tank 1. An electronic scale 74 is provided on the top of the connecting plate 73. A sampling cup 75 is provided on the top of the electronic scale 74.

[0024] The electronic scale model 74 is AR-402.

[0025] Oilfield wastewater enters treatment tank 1 through filter assembly 3. Filter assembly 3 separates oil, water, and impurities from the wastewater. The separated wastewater then enters treatment tank 1. Then, dosing assembly 4 is activated to deliver disinfectant to the wastewater, and stirring assembly 5 is activated to stir the wastewater, ensuring that the disinfectant and wastewater are fully mixed, thus improving disinfection efficiency. After the wastewater is filtered, regulating valve 72 on the diversion pipe 71 is opened to allow wastewater to flow from outlet pipe 6 into diversion pipe 71 and out through diversion pipe 71 to sampling cup 75. The amount of wastewater sampled is weighed using electronic scale 74, which facilitates accurate control of the amount of wastewater sampled, avoiding excessive or insufficient sampling. By weighing the sample, the oil content in the treated wastewater can be calculated, thereby determining whether the discharge standards or reinjection water requirements are met. If the oil content exceeds the standard, it may lead to environmental pollution or affect the efficiency of water injection for oil recovery.

[0026] The filter assembly 3 includes a hydrocyclone 31 fixed to the inlet of the treatment tank 1 via a flange. The treatment tank 1 is equipped with a first activated carbon filter 32 and a second activated carbon filter 33. Wastewater enters the hydrocyclone 31 through the inlet chamber and is forced to rotate. Oil is pushed towards the center of the hydrocyclone 31 by centrifugal force and discharged through the overflow port. Denser solid particles are pushed against the wall of the hydrocyclone 31 by centrifugal force and discharged through the bottom outlet. Clean water accumulates in the bottom collection chamber of the hydrocyclone 31 and is discharged into the treatment tank 1 through another outlet. The wastewater is further filtered by the first activated carbon filter 32 and the second activated carbon filter 33.

[0027] The filter assembly 3 also includes a limiting block 34 fixed to the outside of the first activated carbon filter 32 and the second activated carbon filter 33 respectively, and a limiting groove 35 is provided on the inner wall of the treatment tank 1; the use of the limiting block 34 and the limiting groove 35 makes it easy to install the first activated carbon filter 32 and the second activated carbon filter 33.

[0028] The drug delivery assembly 4 includes a drug storage tank 41 mounted on one side of the treatment tank 1 via a support plate. The top of the drug storage tank 41 is connected to a drug addition port. The drug delivery assembly 4 also includes a delivery pump 42 mounted on the top of the drug storage tank 41. The pump 42 has a suction pipe 43 at its suction end and a spray pipe 44 at its discharge end. One end of the suction pipe 43 is connected to the top of the drug storage tank 41, and the other end is connected to the inner wall of the treatment tank 1. The delivery pump 42 is started to draw out the disinfectant from the drug storage tank 41 through the suction pipe 43 and deliver it to the treatment tank 1 through the suction pipe 43 to disinfect the wastewater.

[0029] The stirring assembly 5 includes a protective shell 51 fixed to the bottom of the treatment tank 1. A motor 52 is provided on one side of the protective shell 51. A drive wheel 53 is fixedly connected to the output end of the motor 52. A driven wheel 54 is meshed with the outer side of the drive wheel 53. A connecting shaft 55 is fixedly connected to the inner ring of the driven wheel 54. The bottom end of the connecting shaft 55 is rotatably connected to the inner wall of the protective shell 51 through a bearing seat. The stirring assembly 5 also includes a fixed shaft 56 fixed to the top of the connecting shaft 55. A stirring paddle 57 is fixedly connected to the outer side of the fixed shaft 56. After the disinfectant enters the treatment tank 1, the motor 52 is started to make the drive wheel 53 drive the driven wheel 54 to rotate, thereby causing the connecting shaft 55 to drive the fixed shaft 56 to rotate, thereby causing the stirring paddle 57 to disturb the water flow, thereby allowing the disinfectant to mix with the sewage quickly.

[0030] Working principle: Oilfield wastewater enters treatment tank 1 through filter assembly 3. Filter assembly 3 separates oil, water and impurities from the wastewater. The separated wastewater enters treatment tank 1, and then dosing assembly 4 is activated to deliver disinfectant to the wastewater. Stirring assembly 5 is activated to stir the wastewater, ensuring that the disinfectant and wastewater are fully mixed, thus improving disinfection efficiency. After the wastewater is filtered, regulating valve 72 on diversion pipe 71 is opened to allow wastewater to flow from outlet pipe 6 into diversion pipe 71 and out through diversion pipe 71 to sampling cup 75. The amount of wastewater sampled is weighed by electronic scale 74, which facilitates accurate control of the amount of wastewater sampled, avoids excessive or insufficient sampling, and facilitates subsequent testing.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] 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 multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation, comprising a treatment tank (1), characterized in that, Also includes: A sealing cap (2) is provided on the top of the treatment tank (1). A filter assembly (3) is provided inside the treatment tank (1). A drug delivery assembly (4) is provided on one side of the treatment tank (1). A stirring assembly (5) is provided at the bottom of the treatment tank (1). An outlet pipe (6) is connected to the other side of the treatment tank (1). A one-way valve (8) is provided on the outside of the outlet pipe (6). A sampling component (7) is disposed on the outside of the outlet pipe (6). The sampling component (7) includes a diversion pipe (71) connected to the outside of the outlet pipe (6). A regulating valve (72) is disposed on the outside of the diversion pipe (71). The diversion pipe (71) is located between the processing tank (1) and the one-way valve (8). A connecting plate (73) is fixedly connected to one side of the processing tank (1). An electronic scale (74) is disposed on the top of the connecting plate (73). A sampling cup (75) is disposed on the top of the electronic scale (74).

2. The multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation as described in claim 1, characterized in that: The filter assembly (3) includes a hydrocyclone (31) fixed to the inlet of the treatment tank (1) by a flange, and the inside of the treatment tank (1) is respectively provided with a first activated carbon filter (32) and a second activated carbon filter (33).

3. The multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation according to claim 2, characterized in that: The filter assembly (3) further includes a limiting block (34) fixed to the outside of the first activated carbon filter (32) and the second activated carbon filter (33) respectively, and a limiting groove (35) is provided on the inner wall of the treatment tank (1).

4. The multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation according to claim 3, characterized in that: The drug delivery assembly (4) includes a drug storage tank (41) disposed on one side of the processing tank (1) via a support plate, and the top of the drug storage tank (41) is connected to a drug addition port.

5. The multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation according to claim 4, characterized in that: The drug delivery assembly (4) also includes a delivery pump (42) disposed on the top of the drug storage tank (41). The delivery pump (42) has a liquid extraction pipe (43) at its pumping end and a spray pipe (44) at its draining end. One end of the liquid extraction pipe (43) is connected to the top of the drug storage tank (41), and the other end of the liquid extraction pipe (43) is connected to the inner wall of the treatment tank (1).

6. The multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation according to claim 1, characterized in that: The stirring assembly (5) includes a protective shell (51) fixed to the bottom of the processing tank (1). A motor (52) is provided on one side of the protective shell (51). A drive wheel (53) is fixedly connected to the output end of the motor (52). A driven wheel (54) is meshed with the outer side of the drive wheel (53). A connecting shaft (55) is fixedly connected to the inner ring of the driven wheel (54). The bottom end of the connecting shaft (55) is rotatably connected to the inner wall of the protective shell (51) through a bearing seat.

7. The multi-stage filtration treatment device for oilfield wastewater with cyclone pre-separation according to claim 6, characterized in that: The stirring assembly (5) also includes a fixed shaft (56) fixed to the top of the connecting shaft (55), and a stirring paddle (57) is fixedly connected to the outside of the fixed shaft (56).

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