Flocculation and sedimentation integrated treatment device for oil extraction sewage

Abstract

The utility model relates to the technical field of sewage filtration treatment, in particular to an integrated flocculation and sedimentation treatment device for oil extraction sewage, and provides the integrated flocculation and sedimentation treatment device for the oil extraction sewage, aiming at the defects of low impurity removal efficiency, incapability of continuous operation and the like when an existing device is used for removing impurities. A precipitation hopper is arranged at the lower end of the treatment box, and a stirring mechanism is arranged in the treatment box; an impurity discharging mechanism is arranged at the lower end of the precipitation hopper and comprises a rotatable switching cylinder, collecting grooves are formed in the upper end and the lower end of the outer surface of the switching cylinder, a collecting box is further arranged at the lower end of the precipitation hopper, and impurities in the precipitation hopper can fall into the collecting grooves under the action of gravity; impurities in the collecting tank are conveyed into the collecting box; the device is high in impurity removal efficiency, can complete efficient removal of precipitated impurities in a non-stop state, and guarantees the continuity of sewage treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sewage treatment, especially to an oil extraction sewage flocculation and precipitation integrated treatment device. BACKGROUND

[0002] A large amount of oil extraction sewage containing oil, suspended matter, colloid and other pollutants is generated in the oil extraction process, and if it is directly discharged or reinjected, it will cause environmental pollution, formation plugging and other problems, so it needs to be purified by flocculation and precipitation process. The existing oil extraction sewage flocculation and precipitation device is mostly designed in a separated mode, the flocculation reaction and the precipitation separation link operate independently, and the impurities after precipitation need to be removed manually after shutdown or assisted by external pollution discharge equipment, which has obvious defects: on the one hand, the impurities removal during shutdown will interrupt the sewage treatment process, resulting in a significant reduction in treatment efficiency, which cannot meet the continuous production sewage disposal demand of oil fields; on the other hand, manual cleaning or traditional pollution discharge operation is complicated, time-consuming and labor-intensive, and the impurities removal is not complete, which is easy to accumulate at the bottom of the equipment and form secondary pollution, affecting the subsequent flocculation and precipitation effect and increasing the operation and maintenance cost. In addition, although some integrated devices integrate the reaction and precipitation, the impurity removal mechanism is not reasonable, and it is still difficult to balance the impurity removal speed and continuous operation demand, which restricts the large-scale application of oil extraction sewage treatment. Therefore, an oil extraction sewage flocculation and precipitation integrated treatment device is proposed to solve the above-mentioned problems. SUMMARY

[0003] The utility model discloses to the existing device in the removal of impurities, there is the low efficiency of impurity removal, cannot continuous operation and so on the defect problem, provide a kind of oil extraction sewage flocculation and precipitation integrated treatment device, and the impurity removal efficiency of device is high, and can complete the efficient removal of sediment impurities under the condition of not stopping, guarantee the continuity of sewage treatment, effectively solve the problem mentioned in the above background art.

[0004] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0005] An oil extraction sewage flocculation and precipitation integrated treatment device, comprising a treatment tank, a sedimentation hopper is arranged at the lower end of the treatment tank, and a stirring mechanism is arranged inside the treatment tank; an impurity discharge mechanism is arranged at the lower end of the sedimentation hopper, the impurity discharge mechanism comprises a switchable cylinder, and a collection groove is formed at the upper and lower ends of the outer surface of the cylinder; a collection tank is further arranged at the lower end of the sedimentation hopper, and the impurities in the sedimentation hopper fall into the collection groove under the action of gravity; when the cylinder rotates, the collection groove rotates and moves, and the impurities in the collection groove are transported into the collection tank.

[0006] An upper cover is arranged at the upper end of the treatment tank, and a water inlet is arranged at the upper end of the upper cover.

[0007] The stirring mechanism comprises a stirring rod rotationally connected with the upper cover, the upper cover is provided with a first motor at the upper end, and the stirring rod is installed at the output end of the first motor.

[0008] The inner wall of the switching cylinder is fixedly connected with a rotatable long cylinder, and the long cylinder is rotationally connected with the inner wall of the lower end of the sedimentation hopper.

[0009] The outer surface of the long cylinder is fixedly connected with a worm gear on both sides, the outer surface of the worm gear is engaged with a worm, the two side end faces of the sedimentation hopper are fixedly connected with a second motor, and the worm is fixedly connected with the output end of the second motor.

[0010] The upper and lower ends of the outer surface of the long cylinder are provided with opening grooves corresponding to the collecting grooves, the inner wall of the long cylinder is fixedly connected with a partition plate, and the bottom end of the collecting groove is provided with a plurality of filter holes.

[0011] The two sides of the long cylinder are rotationally connected with a drain pipe, and the inner wall of the upper end of the drain pipe is provided with a semicircular baffle matched with the long cylinder.

[0012] The two sides of the collecting box are provided with a connecting pipe, and the connecting pipe is in communication with the corresponding drain pipe.

[0013] The inner wall of the collecting box is provided with a detachable collecting box.

[0014] The inner wall of the bottom end of the collecting box is provided with a filter plate.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] In use, when the treatment box and the sedimentation bucket are filled with sewage, by adding flocculating agent into the treatment box and stirring it through the stirring mechanism, the impurities in the sewage can be gathered to form large particles that are easy to settle, thereby accelerating the sedimentation of the impurities; under the action of gravity, the impurities can fall into the inside of the sedimentation bucket, i.e. the collecting groove, and through the impurity discharging mechanism, when the switching cylinder rotates, the two collecting grooves can rotate and move in a circle, i.e. the lower-end collecting groove moves in a circle to the upper end, i.e. the inside of the sedimentation bucket continues to receive impurities, and the upper-end collecting groove moves in a circle to the inside of the collecting box, and the opening of the collecting groove faces downward, so that the impurities in the collecting groove can fall into the collecting box under the action of gravity; when the impurities in the collecting box reach a specified amount, the impurities can be taken out in a concentrated manner, and under the cooperation of the impurity discharging mechanism and the collecting box, the impurities can be removed in a state of not stopping the device; the oil extraction sewage flocculation and sedimentation integrated treatment device has the following advantages: (1) the flocculation reaction and the sedimentation are integrated and designed, so that the sewage treatment process is simplified, the equipment occupies a smaller area and has fewer connecting pipelines, and the system installation and maintenance difficulty is reduced; (2) the quick impurity removing mechanism is innovatively designed, so that the sedimentation impurities can be efficiently removed in a state of not stopping the device, the production interruption caused by the traditional stopping and removing of impurities is avoided, the continuity of the sewage treatment is ensured, and the treatment efficiency is greatly improved; (3) the impurity removing process does not need complicated manual operation, time and labor are saved, the labor cost and labor intensity are reduced, the equipment failure and secondary pollution caused by impurity residues are reduced, and the service life of the device is prolonged; and (4) the combination of the integrated design and the efficient impurity removing function makes the device have stronger adaptability to the oil extraction sewage, the flocculation, sedimentation and separation and removal of pollutants can be quickly realized, the water quality is more stable, and reliable guarantee is provided for the standard discharge or recycling of the oil field sewage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the oil extraction sewage flocculation and sedimentation integrated treatment device.

[0018] Figure 2 It is a sectional view of the treatment box of the oil extraction sewage flocculation and sedimentation integrated treatment device.

[0019] Figure 3 It is an installation schematic view of the switching cylinder of the oil extraction sewage flocculation and sedimentation integrated treatment device.

[0020] Figure 4 It is a sectional view of the collecting box of the oil extraction sewage flocculation and sedimentation integrated treatment device.

[0021] The figure label: 1 - processing box, 2 - sedimentation hopper, 3 - upper cover, 4 - water inlet, 5 - first motor, 6 - stirring rod, 7 - switching cylinder, 8 - second motor, 9 - worm, 10 - worm wheel, 11 - long cylinder, 12 - collection groove, 13 - filter hole, 14 - open slot, 15 - partition, 16 - drain pipe, 17 - semicircular baffle, 18 - collection box, 19 - collection box, 20 - filter plate. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the utility model, and the technical scheme of the utility model is further described in combination with the drawings, but the utility model is not limited to these embodiments.

[0023] As Figures 1-4 shown, the utility model provides a kind of oil extraction sewage flocculation and precipitation integrated treatment device, including processing box 1, the lower end of processing box 1 is equipped with sedimentation hopper 2, and processing box 1 is equipped with stirring mechanism inside;Sedimentation hopper 2 lower end is equipped with impurity discharge mechanism, and impurity discharge mechanism includes the switching cylinder 7 that can rotate, and the upper and lower ends of the outer surface of switching cylinder 7 are all equipped with collection groove 12, and the lower end of sedimentation hopper 2 is also equipped with collection box 18, and the impurity in sedimentation hopper 2 falls into collection groove 12 under the action of gravity, when switching cylinder 7 rotates, can make collection groove 12 rotary movement, and the impurity in collection groove 12 is transported to collection box 18.

[0024] As Figures 1-3As shown, the treatment box 1 and the sedimentation tank 2 are used to contain sewage, and multiple supporting legs are arranged on both sides of the sedimentation tank 2 for supporting the whole device; when the treatment box 1 and the sedimentation tank 2 contain sewage, by adding flocculating agent into the treatment box 1 and stirring it through the stirring mechanism, the impurities in the sewage can be gathered to form large particles that are easy to settle, thereby accelerating the sedimentation of the impurities; under the action of gravity, the impurities can fall into the inside of the sedimentation tank 2, i.e. the collecting tank 12, and through the arranged impurity discharging mechanism, i.e. when the switching cylinder 7 rotates, the two collecting tanks 12 can rotate and move circumferentially, i.e. the lower collecting tank 12 moves circumferentially to the upper end, i.e. the inside of the sedimentation tank 2 continues to receive impurities, and the upper collecting tank 12 moves circumferentially to the inside of the collecting box 18, and the opening of the collecting tank 12 faces downward, so that under the action of gravity, the impurities in the collecting tank 12 can fall into the collecting box 18; when the impurities in the collecting box 18 reach a specified amount, they can be taken out in batches, and under the cooperation of the impurity discharging mechanism and the collecting box 18, the impurities can be removed without stopping the device; the oil extraction sewage flocculation and sedimentation integrated treatment device has the following significant technical advantages through the optimized structural design: first, the flocculation reaction and sedimentation separation are integrated and designed, which simplifies the sewage treatment process, reduces the equipment floor area and connecting pipelines, and reduces the system installation and maintenance difficulty; second, the quick impurity removing mechanism is innovatively designed, which can complete the efficient removal of the sedimented impurities without stopping the device, avoids the production interruption caused by the traditional stopping and removing of impurities, guarantees the continuity of the sewage treatment, and greatly improves the treatment efficiency; third, the impurity removing process does not need complicated manual operation, which saves time and effort, reduces the labor cost and labor intensity, and also reduces the equipment failure and secondary pollution caused by impurity residues, thereby prolonging the service life of the device; at the same time, the combination of the integrated design and the efficient impurity removing function makes the device have stronger adaptability to the oil extraction sewage, can quickly realize the flocculation, sedimentation and separation removal of pollutants, and makes the effluent water quality more stable, thereby providing reliable guarantee for the standard discharge or reusing and recycling of the oil field sewage.

[0025] The upper end of the treatment box 1 is provided with an upper cover 3, and the upper end of the upper cover 3 is provided with a water inlet 4.

[0026] As shown in Figure 2 The upper cover 3 can be fixed on the upper end of the treatment box 1 by interference fit, and the upper cover 3 is used to seal the treatment box 1 to prevent the sewage from splashing during stirring, and the water inlet 4 is arranged to facilitate adding sewage and flocculating agent into the treatment box 1.

[0027] The stirring mechanism comprises a stirring rod 6 rotatably connected with the upper cover 3, and the upper end of the upper cover 3 is provided with a first motor 5, and the stirring rod 6 is installed on the output end of the first motor 5.

[0028] As shown in Figure 2As shown, the first motor 5 is fixed on the upper end surface of the upper cover 3, and the stirring rod 6 is fixed on the output end of the first motor 5. When the first motor 5 is started, the stirring rod 6 can be driven to rotate, so that the sewage is stirred after the flocculating agent is added, the mixing of the liquid medicine is accelerated, and the liquid medicine is quickly precipitated. The motor is a prior art and will not be described here.

[0029] The inner wall of the switching barrel 7 is fixedly connected with a long barrel 11 capable of rotating, and the long barrel 11 is rotatably connected to the inner wall of the lower end of the sedimentation hopper 2.

[0030] As shown in the figure, Figures 3-4 The long barrel 11 and the switching barrel 7 are rotatably connected to the inner wall of the sedimentation hopper 2. When the long barrel 11 rotates, the switching barrel 7 can be driven to rotate.

[0031] The outer surface of the long barrel 11 is fixedly connected with a worm gear 10 on both sides, the outer surface of the worm gear 10 is engaged with a worm 9, the second motor 8 is fixedly connected to the end surface on both sides of the sedimentation hopper 2, and the worm 9 is fixedly connected to the output end of the second motor 8.

[0032] As shown in the figure, Figures 3-4 The function of the second motor 8 is to provide rotating force for the worm 9. The outer surface of the worm 9 is rotatably connected with a bearing seat at the lower end, and the bottom end of the bearing seat is fixedly connected to the end surface on both sides of the collecting box 18. The worm 9 can only rotate, and when the second motor 8 is started, the worm 9 can be driven to rotate. When the worm 9 rotates, the worm gear 10, the long barrel 11 and the switching barrel 7 can be driven to rotate synchronously through the engagement of the worm gear 10.

[0033] The outer surface of the long barrel 11 is provided with an open slot 14 corresponding to the collecting groove 12 at the upper and lower ends. The inner wall of the long barrel 11 is fixedly connected with a partition plate 15, and the bottom end of the collecting groove 12 is provided with a plurality of filter holes 13.

[0034] As shown in the figure, Figures 3-4 The open slot 14 is correspondingly arranged with the collecting groove 12. Through the filter holes 13, the sewage can be filtered. That is, after the sewage is filtered through the filter holes 13, it can flow into the long barrel 11 through the open slot 14 at the upper end. Through the partition plate 15, the inside of the long barrel 11 is divided into two parts, so that the filtered water in the long barrel 11 flows out from both sides of the long barrel 11 and the partition plate 15, that is, to prevent the water from flowing out from the open slot 14 at the lower end.

[0035] The long barrel 11 is rotatably connected with a drain pipe 16 on both sides, and the inner wall of the upper end of the drain pipe 16 is provided with a semicircular baffle plate 17 matched with the long barrel 11.

[0036] As shown in the figure, Figure 4 Through the setting of the drain pipe 16, the filtered water can flow out from the upper end cavity of the long barrel 11 and the inside of the drain pipe 16. Through the setting of the semicircular baffle plate 17, the water in the drain pipe 16 can be prevented from flowing into the lower end cavity of the long barrel 11.

[0037] The collecting box 18 is provided with connecting pipes on both sides, which are connected with the corresponding drain pipes 16.

[0038] As shown in the figure, the connecting pipes are installed on both sides of the lower end of the collecting box 18, which can be connected with the drain pipes 16, that is, the water in the collecting box 18 can flow to the drain pipes 16. Figure 4

[0039] The inner wall of the collecting box 18 is provided with a detachable collecting box 19.

[0040] As shown in the figure, the collecting box 19 can collect the impurities in the collecting box 18, and is slidingly connected in the collecting box 18 and has a certain friction, which is convenient for centralized cleaning of impurities. Figure 4

[0041] The inner wall of the bottom end of the collecting box 19 is provided with a filter plate 20.

[0042] As shown in the figure, when the switching cylinder 7 rotates, the impurities and part of the sewage can be sent into the collecting box 18 at the same time, and then the sewage is filtered through the filter plate 20, so that the filtered water flows into the drain pipe 16, and the impurities are concentrated on the upper end of the filter plate 20. By taking out the filter box, the impurities can be removed, and the whole process can be continuous without stopping the machine. Figure 4

[0043] ​​​The utility model discloses when using, when the sewage in the processing box 1, the sedimentation tank 2 is filled, through adding flocculating agent to the processing box 1, again through the stirring mechanism to its stirring, can make the impurity in the sewage gather and form the big particle of easy settlement, accelerate the impurity deposition, the impurity can fall into the inside of the sedimentation tank 2 under the action of gravity, namely the collection groove 12, through the impurity discharge mechanism of setting, namely when the switching cylinder 7 rotates, can make two collection grooves 12 rotate circumferentially moves, namely the collection groove 12 circumferential movement of lower end reaches upper end, namely the sedimentation tank 2 inside continues to accept the impurity, the collection groove 12 circumferential movement of upper end reaches the collection tank 18 inside, and the opening of collection groove 12 is downward, under the action of gravity can make the impurity in the collection groove 12 fall into the collection tank 18, when the impurity in the collection tank 18 reaches the specified amount, can concentrate and take out, under the cooperation of the impurity discharge mechanism and the collection tank 18, can carry out the impurity removal operation under the condition of not stopping, the oilfield sewage flocculation and sedimentation integrated treatment device passes through the optimization structure design, has the remarkable technical advantage: first, adopts the integrated design of flocculation reaction and sedimentation separation, simplifies the sewage treatment process, reduces the equipment land area and connecting pipeline, reduces the system installation and maintenance difficulty, second, the quick impurity removal mechanism of innovative design can complete the efficient removal of the sediment impurity under the condition of not stopping the device, avoids the production interruption caused by traditional shutdown and removes the impurity, guarantees the continuity of sewage treatment, improves the processing efficiency greatly, third, the impurity removal process does not need complicated manual operation, saves time and effort, not only reduces the labor cost and labor intensity, but also can reduce the equipment failure and secondary pollution caused by impurity residue, prolongs the service life of device, simultaneously, the combination of integrated design and efficient impurity removal function makes the device of oilfield sewage treatment more adaptable, can realize the flocculation and sedimentation and separation removal of pollutant quickly, and the water quality is more stable, provides reliable guarantee for the discharge or backfill reuse of oilfield sewage.

Claims

1. An integrated flocculation and sedimentation device for treating oilfield wastewater, comprising a treatment tank (1), characterized in that: The processing box (1) is provided with a sedimentation tank (2) at the lower end, and the processing box (1) is provided with a stirring mechanism inside; the sedimentation tank (2) is provided with an impurity discharge mechanism at the lower end, and the impurity discharge mechanism comprises a switchable switching cylinder (7), the outer surface of the switching cylinder (7) is provided with a collecting groove (12) at the upper end and the lower end, and the sedimentation tank (2) is further provided with a collecting box (18); the impurities in the sedimentation tank (2) will fall into the collecting groove (12) under the action of gravity, and when the switching cylinder (7) rotates, the collecting groove (12) can be rotated and moved, and the impurities in the collecting groove (12) can be transported into the collecting box (18).

2. The integrated flocculation and sedimentation device for treating oil production wastewater of claim 1, wherein: The processing box (1) is provided with an upper cover (3) at the upper end, and the upper cover (3) is provided with a water inlet (4) at the upper end.

3. The integrated flocculating and precipitating device for treating oil production sewage according to claim 2, characterized in that: The stirring mechanism comprises a stirring rod (6) rotatably connected with the upper cover (3), and the upper cover (3) is provided with a first motor (5) at the upper end, and the stirring rod (6) is installed at the output end of the first motor (5).

4. The integrated flocculating and precipitating device for treating oil production sewage according to claim 1, characterized in that: The switching cylinder (7) is fixedly connected with a long cylinder (11) rotatable, and the long cylinder (11) is rotatably connected with the inner wall of the lower end of the sedimentation tank (2).

5. The integrated flocculating and precipitating device for treating oil production sewage according to claim 4, characterized in that: The outer surface of the long cylinder (11) is fixedly connected with a worm gear (10) on both sides, the outer surface of the worm gear (10) is engaged with a worm (9), the two side end faces of the sedimentation tank (2) are fixedly connected with a second motor (8), and the worm (9) is fixedly connected with the output end of the second motor (8).

6. The integrated flocculating and precipitating device for treating oil production sewage according to claim 4, characterized in that: The outer surface of the long cylinder (11) is provided with an open slot (14) corresponding to the collecting groove (12) at the upper end and the lower end, the inner wall of the long cylinder (11) is fixedly connected with a partition plate (15), and the bottom end of the collecting groove (12) is provided with a plurality of filter holes (13).

7. The integrated flocculating and precipitating device for treating oil production sewage according to claim 4, characterized in that: The long cylinder (11) is rotatably connected with a drain pipe (16) on both sides, and the inner wall of the upper end of the drain pipe (16) is provided with a semicircular baffle (17) matched with the long cylinder (11).

8. The integrated flocculating and precipitating device for treating oil production sewage according to claim 7, characterized in that: The collecting box (18) is provided with a connecting pipe on both sides, and the connecting pipe is in communication with the corresponding drain pipe (16).

9. The integrated flocculating and precipitating device for treating oil production sewage according to claim 1, characterized in that: The inner wall of the collecting box (18) is provided with a detachable collecting box (19).

10. The integrated flocculating and precipitating device for treating oil production sewage according to claim 9, characterized in that: The bottom end of the collecting box (19) is provided with a filter plate (20).

Images