Oilfield sewage treatment settling tank

Abstract

The utility model provides an oil field sewage treatment settling tank which comprises a supporting base, an installation groove is formed in one side of the top of the supporting base, a tank body is fixedly installed on the inner wall of the installation groove, a fixing frame is fixedly installed on the top of the tank body, a filtering assembly is fixedly installed on the top of the fixing frame, and an oil pumping assembly is arranged on one side of the tank body. And the other side of the tank body is fixedly connected with the purification box through a communicating pipe. According to the oil field sewage treatment device, the first filter cartridge and the second filter cartridge are matched with the first filter screen and the second filter screen inside to secondarily filter oil field sewage, more impurities can be conveniently filtered and stored through the funnel-shaped filter screen design, the blocking phenomenon is avoided, the liquid storage tank is matched with the liquid inlet pipe to feed reaction liquid into the purification tank, and the purification effect is improved. According to the oil-water separation device, the oil-water separation tank is arranged, the oil-water separation tank reacts with settled sewage, part of harmful substances in the sewage are reduced, the purification tank is heated through a plurality of heating pipes on a mounting ring plate, so that residual oil in the settled sewage is volatilized, and environmental pollution caused by discharge is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sedimentation tanks, and in particular relates to a sedimentation tank for oilfield sewage treatment. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for drainage into a water body or reuse. Wastewater treatment is widely used in energy, petrochemical, and other fields, and is increasingly entering the daily lives of ordinary people.

[0003] Among them, the "oilfield wastewater treatment sedimentation tank" disclosed in the application number "CN202121349574.1" is also an increasingly mature technology, which "includes a main component, a filter component and a sealing component, the main component includes a tank body, a universal wheel, a sewage pipe and a solenoid valve, and a filter component is installed inside the main component; the filter component includes a sewage inlet pipe, a first filter screen, a first tube body, a second filter screen and a second tube body, one end of the sewage inlet pipe passes through the outer wall of the tank body, one side of the first filter screen is welded to the inner wall of the tank body, the outer wall of the first tube body passes through the inner wall of the tank body, and the outer wall of the second tube body passes through the inner wall of the first tube body", but the sedimentation tank still has the following defects:

[0004] When the sedimentation tank is in use, a two-layer filtration method is adopted to remove impurities in the oilfield wastewater. However, the pipes for filtering and accommodating impurities in the sedimentation tank are prone to blockage, which will affect the filtration efficiency of the sedimentation tank. At the same time, there is a lack of a treatment structure for the wastewater remaining after filtration in the sedimentation tank, which will cause pollution to the environment. Therefore, it is necessary to design a practical oilfield wastewater treatment sedimentation tank. Utility Model Content

[0005] The purpose of the utility model is to provide an oilfield sewage treatment sedimentation tank, aiming to solve the problem in the prior art that the pipeline for filtering and containing impurities in the existing oilfield sewage treatment sedimentation tank is easily blocked, thereby affecting the filtering efficiency of the sedimentation tank, and at the same time lacks a treatment structure for the sewage remaining after filtration in the sedimentation tank, thereby causing pollution to the environment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oilfield sewage treatment sedimentation tank, comprising a support base, a mounting groove is provided on one side of the top of the support base, a tank body is fixedly installed on the inner wall of the mounting groove, a fixing frame is fixedly installed on the top of the tank body, a filter assembly is fixedly installed on the top of the fixing frame, an oil pumping assembly is provided on one side of the tank body, and the other side of the tank body is fixedly connected to a purification box through a connecting pipe;

[0007] The filter assembly includes a second filter cartridge installed on the top of the fixed frame, a second slide groove is opened on the inner wall of the second filter cartridge, a first filter cartridge is fixedly installed on the top of the second filter cartridge, a first slide groove is opened on the inner wall of the first filter cartridge, the inner walls of the second slide groove and the first slide groove are slidably connected to the sliders on the sides of the second filter screen and the first filter screen respectively, and the middle parts of the second filter screen and the first filter screen are interspersed with mounting rods.

[0008] In order to facilitate the extraction of oil in the tank body, as a preferred embodiment of the utility model, the oil extraction assembly includes a mounting plate installed on one side of the tank body, an oil suction pump is fixedly installed on the top of the mounting plate, the oil inlet of the oil suction pump is connected to the tank body through a mounting pipe, one end of the mounting pipe is fixedly connected to a telescopic hose, one end of the telescopic hose is provided with a suspension ball, and the oil outlet of the oil suction pump is fixedly installed with an oil outlet pipe.

[0009] In order to facilitate filtering of impurities, as a preferred embodiment of the present invention, the first filter screen and the second filter screen are both funnel-shaped, and a plurality of filter holes are provided on the surfaces of the first filter screen and the second filter screen.

[0010] In order to facilitate the chemical reaction treatment of the precipitated sewage, as a preferred embodiment of the utility model, a liquid storage tank is fixedly installed on the top of the purification box, one side of the liquid storage tank is connected to the top of the purification box through an inlet pipe, a second solenoid valve is provided on the surface of the inlet pipe, a drain pipe is provided on one side of the purification box, and a third solenoid valve is provided on the surface of the drain pipe.

[0011] In order to facilitate the delivery of oilfield wastewater into the tank body, as a preferred embodiment of the utility model, a feed port is opened in the middle of the top of the tank body, a conduit is fixedly installed on the inner wall of the feed port, the top of the conduit is fixedly connected to the bottom of the second filter cartridge, and a first solenoid valve is provided on the surface of the connecting pipe.

[0012] In order to facilitate improving the filtering effect of the sedimentation tank, as a preferred embodiment of the present invention, the size of the first filter cartridge is larger than the size of the second filter cartridge, and the size of the first filter net is larger than the size of the second filter net.

[0013] In order to control the electrical appliances inside the sedimentation tank, as a preferred embodiment of the present invention, a control panel is fixedly installed on the top of the support base, and the first solenoid valve, the second solenoid valve and the third solenoid valve are electrically connected to an external power supply through the control panel.

[0014] In order to further volatilize the residual oil in the sewage in the purification box, as a preferred embodiment of the utility model, a filter sleeve is fixedly installed on one side of the top of the purification box, a mounting ring plate is provided on the side of the purification box, and a plurality of heating tubes are provided inside the mounting ring plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1) The first filter cartridge and the second filter cartridge are provided to cooperate with the first filter screen and the second filter screen inside to perform secondary filtration on the oilfield sewage. The funnel-shaped filter screen design is convenient for filtering and storing more impurities, thereby avoiding clogging. At the same time, the sliders at the edges of the first filter screen and the second filter screen are slidably connected with the first chute and the second chute, and cooperate with the mounting rod to facilitate taking it out for cleaning, thereby improving the practicality of the sedimentation tank;

[0017] 2) The reaction liquid is sent into the purification box through the liquid storage tank and the liquid inlet pipe to react with the precipitated sewage, thereby reducing some harmful substances in the sewage. The purification box is heated by installing several heating tubes on the ring plate to volatilize the remaining oil in the precipitated sewage to avoid discharge and pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the support base structure of Example 1 of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the filter assembly of Example 1 of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the oil pumping assembly of Example 1 of the utility model;

[0023] Figure 5 This is a schematic diagram of the purification box structure of Example 1 of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of Example 2 of the utility model.

[0025] In the figure: 1. support base; 11. mounting groove; 12. tank body; 121. connecting pipe; 122. conduit; 123. first solenoid valve; 13. fixing frame; 14. control panel; 2. filter assembly; 21. second filter cartridge; 22. second slide groove; 23. first filter cartridge; 24. first slide groove; 25. second filter screen; 26. first filter screen; 27. mounting rod; 3. oil extraction assembly; 31. mounting plate; 32. oil suction pump; 33. mounting pipe; 34. telescopic hose; 35. suspension ball; 36. oil outlet pipe; 4. purification box; 41. liquid storage tank; 42. liquid inlet pipe; 43. second solenoid valve; 44. drain pipe; 45. third solenoid valve; 46. filter sleeve; 5. mounting ring plate; 51. heating pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1-5 The utility model provides the following technical solutions: an oilfield sewage treatment sedimentation tank, comprising a support base 1, a mounting groove 11 is provided on one side of the top of the support base 1, a tank body 12 is fixedly installed on the inner wall of the mounting groove 11, a fixing frame 13 is fixedly installed on the top of the tank body 12, a filter assembly 2 is fixedly installed on the top of the fixing frame 13, an oil pumping assembly 3 is provided on one side of the tank body 12, and the other side of the tank body 12 is fixedly connected to a purification box 4 through a connecting pipe 121;

[0029] The filter assembly 2 includes a second filter cartridge 21 installed on the top of the fixed frame 13, a second slide groove 22 is opened on the inner wall of the second filter cartridge 21, a first filter cartridge 23 is fixedly installed on the top of the second filter cartridge 21, a first slide groove 24 is opened on the inner wall of the first filter cartridge 23, the inner walls of the second slide groove 22 and the first slide groove 24 are slidably connected to the sliders on the sides of the second filter screen 25 and the first filter screen 26 respectively, and the middle parts of the second filter screen 25 and the first filter screen 26 are interspersed with mounting rods 27.

[0030] During specific use, the first filter screen 26 and the second filter screen 25 are slidably connected to the first slide groove 24 and the second slide groove 22 respectively through the mounting rod 27, and are installed and fixed to the first filter cartridge 23 and the second filter cartridge 21. The first filter screen 26 and the second filter screen 25 respectively perform secondary filtration on the oilfield wastewater to avoid clogging.

[0031] In this embodiment, the oil pumping assembly 3 includes a mounting plate 31 installed on one side of the tank body 12, and an oil suction pump 32 is fixedly installed on the top of the mounting plate 31. The oil inlet of the oil suction pump 32 is connected to the tank body 12 through an installation pipe 33. One end of the installation pipe 33 is fixedly connected to a telescopic hose 34, and one end of the telescopic hose 34 is provided with a suspension ball 35. The oil outlet of the oil suction pump 32 is fixedly installed with an oil outlet pipe 36.

[0032] When in use, the suspension ball 35 is suspended on the oil layer, and the oil suction pump 32 cooperates with the telescopic hose 34 to suck the oil into the installation pipe 33, and then discharges the oil from the oil outlet pipe 36 of the oil suction pump 32 and flows into the external oil storage tank.

[0033] In this embodiment, the first filter screen 26 and the second filter screen 25 are both funnel-shaped, and a plurality of filter holes are formed on the surfaces of the first filter screen 26 and the second filter screen 25 .

[0034] When in use, the first filter screen 26 and the second filter screen 25 are funnel-shaped and have a plurality of filter holes, so as to better filter out impurities in the oilfield wastewater.

[0035] In this embodiment, a liquid storage tank 41 is fixedly installed on the top of the purification box 4, and one side of the liquid storage tank 41 is connected to the top of the purification box 4 through a liquid inlet pipe 42. A second solenoid valve 43 is provided on the surface of the liquid inlet pipe 42. A drain pipe 44 is provided on one side of the purification box 4, and a third solenoid valve 45 is provided on the surface of the drain pipe 44.

[0036] During specific use, the chemical liquid in the liquid storage tank 41 enters the purification box 4 through the liquid inlet pipe 42, so as to react with the precipitated sewage, thereby reducing some harmful substances in the sewage. The second solenoid valve 43 is used to control the flow of the liquid in the liquid inlet pipe 42, and the third solenoid valve 45 is used to control the flow of sewage discharged from the drain pipe 44.

[0037] In this embodiment, a feed port is opened in the middle of the top of the tank body 12, a conduit 122 is fixedly installed on the inner wall of the feed port, the top of the conduit 122 is fixedly connected to the bottom of the second filter cartridge 21, and a first solenoid valve 123 is provided on the surface of the connecting pipe 121.

[0038] During specific use, the top of the conduit 122 is fixedly connected to the bottom of the second filter cartridge 21, so that the oilfield wastewater can enter the tank body 12. The first solenoid valve 123 can be used to control the flow of the liquid in the connecting pipe 121, so that the precipitated wastewater can flow into the purification box 4.

[0039] In this embodiment, the size of the first filter cartridge 23 is larger than that of the second filter cartridge 21 , and the size of the first filter screen 26 is larger than that of the second filter screen 25 .

[0040] During specific use, the size of the first filter cartridge 23 is larger than that of the second filter cartridge 21 , and the size of the first filter screen 26 is larger than that of the second filter screen 25 , so as to avoid clogging.

[0041] In this embodiment, a control panel 14 is fixedly installed on the top of the support base 1 , and the first solenoid valve 123 , the second solenoid valve 43 and the third solenoid valve 45 are all electrically connected to an external power source through the control panel 14 .

[0042] During specific use, the control panel 14 is used to control the first solenoid valve 123, the second solenoid valve 43 and the third solenoid valve 45, so as to facilitate the control of the liquid flow in the pipeline.

[0043] Working principle: When using the device, connect it to an external power supply. First, use the mounting rod 27 to slide the first filter screen 26 and the second filter screen 25 with the slider on the side to connect them to the first slide groove 24 and the second slide groove 22 respectively, and install and fix them with the first filter cartridge 23 and the second filter cartridge 21. The funnel-shaped first filter screen 26 and the second filter screen 25 respectively perform secondary filtration on the oilfield sewage to avoid blockage. After the oilfield sewage enters the tank body 12 and settles for a period of time, the suspension ball 35 is suspended on the oil layer. The oil suction pump 32 cooperates with the telescopic hose 34 to suck the oil into the mounting pipe 33, and then discharges it from the oil outlet pipe 36 of the oil suction pump 32 and flows into the external oil storage tank. Open the first solenoid valve 123, and the sewage flows into the purification box 4 through the connecting pipe 121. Open the second solenoid valve 43, and let the chemical liquid in the liquid storage tank 41 enter the purification box 4 through the liquid inlet pipe 42, so as to react with the precipitated sewage to reduce the harmful substances in the sewage, and then discharge it from the drain pipe 44.

[0044] Example 2

[0045] See also Figure 6 In order to further treat the precipitated sewage, the distinguishing feature of this embodiment from the above embodiments is that in this embodiment, a filter sleeve 46 is fixedly installed on one side of the top of the purification box 4, a mounting ring plate 5 is provided on the side of the purification box 4, and a plurality of heating tubes 51 are provided inside the mounting ring plate 5.

[0046] During specific use, the purification box 4 is heated by using a plurality of heating tubes 51 installed inside the ring plate 5, so as to facilitate volatilization of residual oil in the sewage, and then the gas is filtered through the filter sleeve 46 and discharged to avoid polluting the environment.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oilfield wastewater treatment sedimentation tank, comprising a support base (1), characterized in that: A mounting groove (11) is provided on one side of the top of the support base (1), a tank body (12) is fixedly mounted on the inner wall of the mounting groove (11), a fixing frame (13) is fixedly mounted on the top of the tank body (12), a filter assembly (2) is fixedly mounted on the top of the fixing frame (13), an oil extraction assembly (3) is provided on one side of the tank body (12), and the other side of the tank body (12) is fixedly connected to the purification box (4) via a connecting pipe (121); The filter assembly (2) comprises a second filter cartridge (21) mounted on the top of a fixing frame (13); a second slide groove (22) is provided on the inner wall of the second filter cartridge (21); a first filter cartridge (23) is fixedly mounted on the top of the second filter cartridge (21); a first slide groove (24) is provided on the inner wall of the first filter cartridge (23); the inner walls of the second slide groove (22) and the first slide groove (24) are slidably connected to sliders on the sides of the second filter screen (25) and the first filter screen (26), respectively; and a mounting rod (27) is inserted and connected in the middle of the second filter screen (25) and the first filter screen (26).

2. The oilfield wastewater treatment sedimentation tank according to claim 1, characterized in that: The oil pumping assembly (3) comprises a mounting plate (31) mounted on one side of the tank body (12); an oil suction pump (32) is fixedly mounted on the top of the mounting plate (31); an oil inlet of the oil suction pump (32) is connected to the tank body (12) through a mounting pipe (33); one end of the mounting pipe (33) is fixedly connected to a telescopic hose (34); one end of the telescopic hose (34) is provided with a suspension ball (35); and an oil outlet pipe (36) is fixedly mounted on the oil outlet of the oil suction pump (32).

3. The oilfield wastewater treatment sedimentation tank according to claim 1, characterized in that: The first filter screen (26) and the second filter screen (25) are both funnel-shaped, and a plurality of filter holes are provided on the surfaces of the first filter screen (26) and the second filter screen (25).

4. The oilfield wastewater treatment sedimentation tank according to claim 1, characterized in that: A liquid storage tank (41) is fixedly mounted on the top of the purification box (4); one side of the liquid storage tank (41) is connected to the top of the purification box (4) through a liquid inlet pipe (42); a second solenoid valve (43) is provided on the surface of the liquid inlet pipe (42); a drainage pipe (44) is provided on one side of the purification box (4); and a third solenoid valve (45) is provided on the surface of the drainage pipe (44).

5. The oilfield wastewater treatment sedimentation tank according to claim 1, characterized in that: A feed port is provided in the middle of the top of the tank body (12), a conduit (122) is fixedly mounted on the inner wall of the feed port, the top of the conduit (122) is fixedly connected to the bottom of the second filter cartridge (21), and a first solenoid valve (123) is provided on the surface of the connecting pipe (121).

6. The oilfield wastewater treatment sedimentation tank according to claim 1, characterized in that: The size of the first filter cartridge (23) is larger than the size of the second filter cartridge (21), and the size of the first filter net (26) is larger than the size of the second filter net (25).

7. The oilfield wastewater treatment sedimentation tank according to claim 5, characterized in that: A control panel (14) is fixedly mounted on the top of the support base (1), and the first solenoid valve (123), the second solenoid valve (43) and the third solenoid valve (45) are all electrically connected to an external power supply through the control panel (14).

8. The oilfield wastewater treatment sedimentation tank according to claim 1, characterized in that: A filter sleeve (46) is fixedly mounted on one side of the top of the purification box (4), a mounting ring plate (5) is provided on the side of the purification box (4), and a plurality of heating tubes (51) are provided inside the mounting ring plate (5).

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