Oil dirt separation device for oil-based rock debris and use method of oil dirt separation device

Abstract

The invention discloses an oil dirt separation device for oil-based rock debris and a using method, and relates to the technical field of oil dirt separation.The oil dirt separation device comprises a separation tank and fishing pipes, the upper end of the separation tank is sleeved with a connecting tank, a sliding pipe is fixedly arranged on one side of each fishing pipe, and a first fixing pipe is slidably arranged on each sliding pipe; the first fixing pipe is fixedly arranged on a sliding shaft, an outer spline shaft is fixedly arranged at one end of the sliding shaft, an inner spline sleeve shaft is arranged on the outer spline shaft in a matched mode, a fishing assembly is arranged on the opening side of the fishing pipe, a cleaning mechanism is arranged at the bottom end of the interior of the connecting tank, and a mixing mechanism is arranged at one end of the sliding shaft. By arranging the stirring shaft and the sliding shaft, scum in liquid can fully float, by arranging the fishing pipe, the scum can be conveniently fished, and by arranging the first scraping frame, the scum can be conveniently collected.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pollution separation, and specifically to an oil pollution separation device and a use method for oil-based cuttings. Background Art

[0002] Drilling oil-based cuttings are a kind of solid waste generated during the drilling process of oil and gas resources. Due to containing a large amount of oil substances, direct discharge will seriously pollute the environment. After pretreatment, the drilling cuttings are sent into a thermal desorption device. In this device, the drilling cuttings are dried for moisture and the oil evaporates to form a gaseous mixed steam. This steam enters the condensation device for cooling. The collected condensate enters the condensate treatment device for treatment and separation. The recovered oil separated is sent into an oil storage tank and then refined to obtain furnace fuel oil. When treating the condensate, the impurities in the condensate are separated in the form of scum and bottom sludge by means of aeration.

[0003] When the existing oil pollution separation equipment is used to treat scum and bottom sludge, most of them set a filter screen at the feeding port to filter and separate the scum. After precipitation, the bottom sludge precipitates at the bottom of the separation equipment. However, by setting a filter screen at the feeding port, although the scum can be effectively filtered, in actual use, the scum is likely to block the filter screen, thus affecting the effect of oil pollution separation. Moreover, after the filtration is completed, it is not convenient to clean the scum on the filter screen and collect it uniformly, and manual cleaning and collection are required, which increases the workload of the staff during use and is time-consuming and laborious.

[0004] Based on this, an oil pollution separation device and a use method for oil-based cuttings are provided now, which can eliminate the drawbacks of the existing device. Summary of the Invention

[0005] The purpose of the present invention is to provide an oil pollution separation device and a use method for oil-based cuttings to solve the problem of inconvenient cleaning and collection of scum in the background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An oil pollution separation device for oil-based cuttings, comprising a separation tank and a fishing tube. The upper end of the separation tank is open, and a connecting tank is sleeved on the upper end of the separation tank. The connecting tank is fixedly arranged at one end of the separation tank. The separation tank and the connecting tank form a closed space. A liquid inlet pipe is communicated with the upper end of the connecting tank, a discharge pipe is communicated with the bottom end of the separation tank, and a liquid discharge pipe is communicated with the middle of the separation tank. The two fishing tubes are arranged in a circular array. A sliding tube is fixedly arranged on one side of each fishing tube. A first fixing tube is slidably arranged on the sliding tube. The first fixing tube is fixedly arranged on a sliding shaft. One end of the sliding shaft is fixedly provided with an external spline shaft, and an internal spline sleeve shaft is arranged in cooperation with the external spline shaft. The internal spline sleeve shaft is rotatably arranged in the mounting hole at the upper end of the connecting tank. One side of the fishing tube is open, and a fishing assembly for facilitating the fishing of scum is arranged on the open side of the fishing tube. A cleaning mechanism for facilitating the cleaning of the scum inside the fishing tube is arranged at the bottom end inside the connecting tank. A mixing mechanism for facilitating the stirring of the liquid inside the separation tank is arranged at one end of the sliding shaft.

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solutions:

[0009] In an optional solution: the fishing assembly includes two rotating plates arranged symmetrically. Rotating plates are symmetrically arranged on the open sides of the two fishing tubes. Second fixing tubes are rotatably arranged on the rotating shafts at both ends of the rotating plate. The second fixing tubes are fixedly arranged inside the fishing tubes. Torsion springs are arranged between the rotating shafts at both ends of the rotating plate and the inside of the second fixing tubes. Limiting plates are fixedly arranged at the positions corresponding to the two rotating plates on one side of the fishing tube. A support plate is rotatably arranged at one end of the external spline shaft. The two ends of the support plate are respectively fixedly connected to the output ends of two electric push rods. The electric push rods are fixedly arranged on the upper end of the connecting tank. A driving member for driving the sliding shaft to rotate is arranged on the upper end of the connecting tank.

[0010] In an optional solution: the driving member includes a first motor. An installation frame is fixedly arranged on the first motor. The installation frame is fixedly arranged on the upper end of the connecting tank. A first gear is fixedly arranged at the output end of the first motor. A second gear is meshed with the first gear. The second gear is fixedly arranged on the internal spline sleeve shaft.

[0011] In an optional solution: the mixing mechanism includes a stirring shaft. One end of the stirring shaft is rotatably arranged at the bottom end of the separation tank. A plurality of stirring plates are fixedly arranged at equal intervals on the stirring shaft. A sliding groove is arranged at the other end of the stirring shaft. A connecting shaft is slidably arranged in the sliding groove. A first friction disc is fixedly arranged at one end of the connecting shaft. A second friction disc is closely arranged at the bottom end of the first friction disc. The second friction disc is fixedly arranged at the bottom end of the sliding groove. The other end of the connecting shaft is fixedly connected to one end of the sliding shaft.

[0012] In an alternative solution: The cleaning mechanism includes a friction sleeve wheel. A limit rotating ring is fixedly arranged at the upper end of the friction sleeve wheel. A fixed ring is rotatably arranged on the limit rotating ring, and the fixed ring is fixedly arranged at the upper end inside the connection tank. The friction sleeve wheel is coaxially arranged with the sliding shaft. A number of first scraping frames are equidistantly arranged on the friction sleeve wheel, and the first scraping frames are closely attached to the inner wall of the connection tank. A friction ring is frictionally and closely attached to the bottom end of the friction sleeve wheel, and the friction ring is fixedly arranged on the sliding shaft. A slag discharge pipe is communicated with the bottom end of the connection tank, and a first valve is arranged on the slag discharge pipe. A tension spring is arranged between the sliding pipe and the first fixed pipe. Limit rods are symmetrically arranged on the first fixed pipe, and limit sliding grooves are arranged at positions corresponding to the limit rods on the sliding pipe. One end of the fishing pipe is open.

[0013] In an alternative solution: A second valve is arranged at the connection between the discharge pipe and the bottom end of the separation tank. A fixed shaft is rotatably arranged inside the discharge pipe, and a screw conveyor plate is fixedly arranged on the fixed shaft. One end of the fixed shaft is fixedly connected to a second motor, and the second motor is fixedly arranged at one end of the discharge pipe. Second scraping frames are symmetrically arranged on the stirring shaft, and the second scraping frames are closely attached to the inner bottom end of the separation tank.

[0014] In an alternative solution: An installation groove is arranged at the bottom end of the separation tank, and a pressure sensor is fixedly arranged in the installation groove. The pressure sensor is electrically connected to an external control component.

[0015] In an alternative solution: An extension pipe is slidably arranged at one end of the liquid discharge pipe. An installation filter pipe is fixedly arranged at one end of the extension pipe. A floating ring is fixedly arranged at the bottom end of the installation filter pipe. The inside of the floating ring is hollow. A number of counterweight blocks are fixedly arranged at the upper end of the installation filter pipe. The other end of the liquid discharge pipe is communicated with an external liquid pumping component.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The present invention provides a stirring shaft and a sliding shaft, so that when separation is performed, the sliding shaft drives the stirring shaft to rotate through the cooperation of the first friction disk and the second friction disk, so that the scum inside the liquid is fully floated, and during the sedimentation process, the sliding shaft passes through two fishing pipes, so that it is convenient to collect the scum attached to the surface of the liquid, and by providing two rotating plates, it is prevented that the scum is prevented from escaping from the inside of the fishing pipe when the scum is being caught, and by providing a connecting tank at the upper end of the separation tank, when the scum inside the fishing pipe needs to be cleaned, one end of the fishing pipe is higher than the upper end of the separation tank, and starts to rotate through the sliding shaft, and the scum inside the fishing pipe is thrown out under the action of centrifugal force, and the friction ring is driven to rotate while the sliding shaft rotates, and the friction ring drives a plurality of first scraper frames to rotate, so that the scum on the inner wall of the connecting tank is removed, and the scum is pushed into the slag discharge pipe, so that the scum is convenient to collect, and the problem that it is inconvenient to clean and collect the scum is solved, thereby increasing the practicality of the oil-based rock cuttings and oil pollution separation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the separation tank and the connecting tank of the present invention.

[0020] Figure 3 It is a schematic diagram of the connection between the friction sleeve and the friction ring of the present invention.

[0021] Figure 4 This is a schematic diagram of the connection between the connecting shaft and the stirring shaft of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of installing the filter tube, floating ring and counterweight block of the present invention.

[0023] Figure 6 It is a schematic diagram of the connection between the sliding tube and the first fixed tube of the present invention.

[0024] Figure 7 This is a schematic diagram of the installation of the rotating plate of the present invention.

[0025] Figure 8 It is a schematic diagram of the installation of the torsion spring of the present invention.

[0026] Annotation of reference numerals: 11 separation tank, 12 connection tank, 13 liquid inlet pipe, 14 discharge pipe, 15 stirring shaft, 16 sliding shaft, 17 first friction disc, 18 second friction disc, 19 external spline shaft, 20 internal spline sleeve shaft, 21 first motor, 22 electric push rod, 23 fishing pipe, 24 sliding pipe, 25 first fixed pipe, 26 tension spring, 27 rotating plate, 28 torsion spring, 29 second fixed pipe, 30 first scraping rack, 31 friction sleeve wheel, 32 friction ring, 33 liquid discharge pipe, 34 extension pipe, 35 installation filter pipe, 36 floating ring, 37 counterweight, 38 second scraping rack, 39 auger plate, 40 second motor, 41 pressure sensor, 42 slag discharge pipe. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Embodiment 1

[0029] In one embodiment, as Figures 1-8 shown, an oil-based cuttings oil separation device includes a separation tank 11 and a fishing pipe 23. The upper end of the separation tank 11 is open. The upper end of the separation tank 11 is sleeved with a connection tank 12. The connection tank 12 is fixedly arranged at one end of the separation tank 11. The separation tank 11 and the connection tank 12 form a closed space. The upper end of the connection tank 12 is communicated with a liquid inlet pipe 13. The bottom end of the separation tank 11 is communicated with a discharge pipe 14. The middle part of the separation tank 11 is communicated with a liquid discharge pipe 33. The two fishing pipes 23 are arranged in a circular array. A sliding pipe 24 is fixedly arranged on one side of each fishing pipe 23. A first fixed pipe 25 is slidably arranged on the sliding pipe 24. The first fixed pipe 25 is fixedly arranged on a sliding shaft 16. One end of the sliding shaft 16 is fixedly provided with an external spline shaft 19. An internal spline sleeve shaft 20 is arranged in a mating manner on the external spline shaft 19. The internal spline sleeve shaft 20 is rotatably arranged in an installation hole at the upper end of the connection tank 12. One side of the fishing pipe 23 is open. A fishing assembly for facilitating the fishing of floating slag is arranged on the open side of the fishing pipe 23. A cleaning mechanism for facilitating the cleaning of the floating slag inside the fishing pipe 23 is arranged at the bottom end inside the connection tank 12. A mixing mechanism for facilitating the stirring of the liquid inside the separation tank 11 is arranged at one end of the sliding shaft 16. The cleaning mechanism facilitates the cleaning and collection of the floating slag inside the fishing pipe 23. The mixing mechanism facilitates the stirring of the liquid after the liquid enters the separation tank 11, so that the floating slag floats.

[0030] The fishing assembly includes two rotating plates 27 arranged symmetrically. Rotating plates 27 are symmetrically arranged on the opening sides of both fishing pipes 23. Second fixed pipes 29 are rotatably arranged on the rotating shafts at both ends of the rotating plate 27. The second fixed pipes 29 are fixedly arranged inside the fishing pipes 23. Torsion springs 28 are arranged between the rotating shafts at both ends of the rotating plate 27 and the interiors of the second fixed pipes 29. Limiting plates are fixedly arranged at positions corresponding to the two rotating plates 27 on one side of the fishing pipe 23. A support plate is rotatably arranged at one end of the external spline shaft 19. Both ends of the support plate are fixedly connected to the output ends of two electric push rods 22 respectively. The electric push rods 22 are fixedly arranged at the upper end of the connection tank 12. A driving member for driving the sliding shaft 16 to rotate is arranged at the upper end of the connection tank 12. During use, the liquid inlet pipe 13 is communicated with the bottom end of the spray tower. Then, the mixed steam falls into the separation tank 11 after being water-sprayed. Then, through aeration, sundries are separated in the forms of scum and bottom sludge. Then, the driving structure drives the sliding shaft 16 to rotate, and the sliding shaft 16 drives the two fishing pipes 23 to rotate. Since a number of filter holes are provided on the fishing pipes 23 and the two rotating plates 27 are arranged in a closed manner, when the rotating plates 27 rotate in the liquid, under the resistance of the liquid, the two rotating plates 27 are opened. Then, the scum in the upper part of the liquid can be fished. At the same time, when the fishing height of the fishing pipes 23 needs to be adjusted, the electric push rods 22 can be started. The output ends of the electric push rods 22 drive the external spline shaft 19 to slide inside the internal spline sleeve shaft 20 through the support plate, and the external spline shaft 19 drives the two fishing pipes 23 to move through the sliding shaft 16, so as to adjust the fishing position.

[0031] The driving member includes a first motor 21. An installation frame is fixedly arranged on the first motor 21. The installation frame is fixedly arranged at the upper end of the connection tank 12. A first gear is fixedly arranged at the output end of the first motor 21. A second gear is meshed with the first gear. The second gear is fixedly arranged on the internal spline sleeve shaft 20. During use, when it is necessary to drive the two fishing pipes 23 to rotate through the sliding shaft 16, the first motor 21 is started. The output end of the first motor 21 drives the first gear to rotate. The first gear and the second gear rotate meshingly, so that the second gear drives the internal spline sleeve shaft 20 to rotate. Since the internal spline sleeve shaft 20 and the external spline shaft 19 are connected through spline fit, the external spline shaft 19 drives the two fishing pipes 23 to rotate through the sliding shaft 16.

[0032] The mixing mechanism includes a stirring shaft 15. One end of the stirring shaft 15 is rotatably arranged at the bottom end of the separation tank 11. A number of stirring plates are fixedly arranged on the stirring shaft 15 at equal intervals. A sliding groove is arranged at the other end of the stirring shaft 15. A connecting shaft is slidably arranged in the sliding groove. One end of the connecting shaft is fixedly provided with a first friction disc 17. The bottom end of the first friction disc 17 is closely attached to a second friction disc 18. The second friction disc 18 is fixedly arranged at the bottom end of the sliding groove. The other end of the connecting shaft is fixedly connected to one end of a sliding shaft 16. During use, when the liquid enters the connecting tank 12, the output end of the electric push rod 22 drives the external spline shaft 19 to slide inside the internal spline sleeve shaft 20 through the support plate. While the external spline shaft 19 moves, it drives the sliding shaft 16 to move. The sliding shaft 16 drives the first friction disc 17 to slide in the sliding groove at one end of the stirring shaft 15 through the connecting shaft. Subsequently, the bottom end of the first friction disc 17 is frictionally attached to the upper end of the second friction disc 18. Then, the first motor 21 drives the sliding shaft 16 to rotate. The sliding shaft 16 drives the connecting shaft to rotate. The connecting shaft makes the stirring shaft 15 and the sliding shaft 16 rotate synchronously through the cooperation of the first friction disc 17 and the second friction disc 18. When the stirring shaft 15 rotates, the liquid inside the separation tank 11 is stirred by a number of stirring plates, so that the scum fully floats. After the stirring is completed, the output end of the electric push rod 22 drives the first friction disc 17 to disengage from the second friction disc 18 through the connecting shaft. Subsequently, the liquid precipitates inside the separation tank 11. During the precipitation process of the liquid, the output end of the electric push rod 22 drives the middle of the fishing pipe 23 to be flush with the upper end of the liquid surface inside the separation tank 11 through the sliding shaft 16, so that the fishing pipe 23 collects the scum. And while the fishing pipe 23 is fishing for the scum, one end of the fishing pipe 23 is closely attached to the inside of the separation tank 11.

[0033] The cleaning mechanism includes a friction sleeve wheel 31. A limiting rotating ring is fixedly arranged at the upper end of the friction sleeve wheel 31. A fixed ring is rotatably arranged on the limiting rotating ring. The fixed ring is fixedly arranged at the upper end inside the connecting tank 12. The friction sleeve wheel 31 is coaxially arranged with the sliding shaft 16. A plurality of first scraping frames 30 are equidistantly arranged on the friction sleeve wheel 31. The first scraping frames 30 are closely attached to the inner wall of the connecting tank 12. A friction ring 32 is frictionally and closely attached to the bottom end of the friction sleeve wheel 31. The friction ring 32 is fixedly arranged on the sliding shaft 16. A slag discharge pipe 42 is communicated with the bottom end of the connecting tank 12. A first valve is arranged on the slag discharge pipe 42. A tension spring 26 is arranged between the sliding pipe 24 and the first fixed pipe 25. Limiting rods are symmetrically arranged on the first fixed pipe 25. Limiting chutes are arranged at positions corresponding to the limiting rods on the sliding pipe 24. One end of the fishing pipe 23 is open. During use, when the fishing pipe 23 finishes fishing for scum, the output end of the electric push rod 22 drives the fishing pipe 23 and the friction ring 32 to move through the support plate and the sliding shaft 16, so that the friction ring 32 is closely attached to the bottom end of the friction sleeve wheel 31. At this time, one end of the fishing pipe 23 is higher than the upper end of the separation tank 11. Subsequently, the first motor 21 drives the sliding shaft 16 to rotate through the external spline shaft 19. When the sliding shaft 16 rotates, it drives the friction ring 32 to rotate through the friction sleeve wheel 31. The friction ring 32 drives a plurality of first scraping frames 30 to rotate. At the same time, the sliding shaft 16 drives the two fishing pipes 23 to rotate. While the fishing pipes 23 are rotating, the sliding pipe 24 slides on the first fixed pipe 25, so that the opening end of the rotating plate 27 is extended. As the sliding shaft 16 rotates rapidly, under the action of centrifugal force, the scum inside the fishing pipe 23 is discharged. The scum will adhere to the inner wall of the connecting tank 12. At the same time, the first scraping frames 30 can clean the scum on the inner wall of the connecting tank 12 and push the scum into the slag discharge pipe 42. Subsequently, the staff opens the first valve on the slag discharge pipe 42 to collect the scum.

[0034] A second valve is arranged at the connection between the discharge pipe 14 and the bottom end of the separation tank 11. A fixed shaft is rotatably arranged inside the discharge pipe 14. A screw blade 39 is fixedly arranged on the fixed shaft. One end of the fixed shaft is fixedly connected with a second motor 40. The second motor 40 is fixedly arranged at one end of the discharge pipe 14. Second scraping frames 38 are symmetrically arranged on the stirring shaft 15. The second scraping frames 38 are closely attached to the bottom end inside the separation tank 11. During use, when it is necessary to discharge the sediment at the bottom end inside the separation tank 11, the second valve at one end of the discharge pipe 14 is opened, and the sediment falls into the discharge pipe 14. Subsequently, the second motor 40 is started. The output end of the second motor 40 drives the fixed shaft to rotate. The fixed shaft drives the screw blade 39 to rotate, so that the sediment is discharged. At the same time, the first friction disc 17 is closely attached to the second friction disc 18, so that the sliding shaft 16 drives the stirring shaft 15 to rotate. The stirring shaft 15 drives the second scraping frames 38 to rotate, so that it is convenient to discharge all the sediment inside the separation tank 11.

[0035] The bottom end of the separation tank 11 is provided with an installation groove, and a pressure sensor 41 is fixedly arranged in the installation groove. The pressure sensor 41 is electrically connected to an external control component. During use, as the liquid continuously enters the interior of the separation tank 11, the pressure at the bottom end of the separation tank 11 increases. When the liquid level inside the separation tank 11 reaches the set height, the external control component controls the liquid inside the spray tower to stop entering the interior of the separation tank 11.

[0036] Embodiment 2

[0037] The difference from Embodiment 1 is that: one end of the drain pipe 33 is slidably provided with an extension pipe 34, one end of the extension pipe 34 is fixedly provided with an installation filter pipe 35, the bottom end of the installation filter pipe 35 is fixedly provided with a floating ring 36, the inside of the floating ring 36 is hollow, and several counterweight blocks 37 are fixedly arranged at the upper end of the installation filter pipe 35. The other end of the drain pipe 33 is communicated with an external liquid pumping component. During use, when it is necessary to pump the oil-liquid mixture, the external liquid pumping component pumps the separated liquid through the drain pipe 33. When the liquid level drops to one end of the drain pipe 33, due to the hollow setting inside the floating ring 36 and several counterweight blocks 37 being arranged at the upper end of the installation filter pipe 35, the external liquid pumping component can always pump the liquid. And when the floating ring 36 is located above the sediment at the bottom end inside the separation tank 11, the liquid pumping is completed.

[0038] The above embodiment discloses an oil pollution separation device for oil-based cuttings. Among them, the liquid inlet pipe 13 is communicated with the bottom end of the spray tower. Then, the mixed steam falls inside the separation tank 11 after being water-sprayed. Subsequently, through aeration, sundries are separated in the form of scum and sludge. The first motor 21 is started, and the output end of the first motor 21 drives the first gear to rotate. The first gear meshes with the second gear to rotate, so that the second gear drives the internal spline sleeve shaft 20 to rotate. Since the internal spline sleeve shaft 20 is connected with the external spline shaft 19 through spline fit, the external spline shaft 19 drives the two fishing pipes 23 to rotate through the sliding shaft 16. At the same time, the output end of the electric push rod 22 drives the external spline shaft 19 to slide inside the internal spline sleeve shaft 20 through the support plate. When the external spline shaft 19 moves, it drives the sliding shaft 16 to move. The sliding shaft 16 drives the first friction disc 17 to slide in the sliding groove at one end of the stirring shaft 15 through the connecting shaft. Subsequently, the bottom end of the first friction disc 17 is frictionally attached to the upper end of the second friction disc 18. The connecting shaft enables the stirring shaft 15 and the sliding shaft 16 to rotate synchronously through the cooperation of the first friction disc 17 and the second friction disc 18. When the stirring shaft 15 rotates, the liquid inside the separation tank 11 is stirred by a plurality of stirring plates, so that the scum fully floats. After the stirring is completed, the output end of the electric push rod 22 drives the first friction disc 17 to disengage from the second friction disc 18 through the connecting shaft. Subsequently, the liquid precipitates inside the separation tank 11. During the precipitation process of the liquid, the output end of the electric push rod 22 drives the middle of the fishing pipe 23 to be flush with the upper end of the liquid surface inside the separation tank 11 through the sliding shaft 16, so that the fishing pipe 23 collects the scum. And while the fishing pipe 23 is fishing for scum, one end of the fishing pipe 23 is closely attached to the inside of the separation tank 11. When it is necessary to extract the oil-liquid mixture, the external liquid extraction component extracts the separated liquid through the drain pipe 33. When the liquid level drops to one end of the drain pipe 33, since the inside of the floating ring 36 is hollow and there are a plurality of counterweights 37 provided at the upper end of the installation filter pipe 35, the external liquid extraction component can always extract the liquid. And when the floating ring 36 is located above the sediment at the bottom end inside the separation tank 11, the liquid extraction is completed;

[0039] During the liquid discharging process, the output end of the electric push rod 22 drives the fishing tube 23 and the friction ring 32 to move through the support plate and the sliding shaft 16, so that the friction ring 32 is in close contact with the bottom end of the friction sleeve wheel 31. At this time, one end of the fishing tube 23 is higher than the upper end of the separation tank 11. Subsequently, the first motor 21 drives the sliding shaft 16 to rotate through the external spline shaft 19. When the sliding shaft 16 rotates, it drives the friction ring 32 to rotate through the friction sleeve wheel 31. The friction ring 32 drives several first scraping frames 30 to rotate. At the same time, the sliding shaft 16 drives the two fishing tubes 23 to rotate. While the fishing tubes 23 are rotating, the sliding tube 24 slides on the first fixed tube 25, so that the opening end of the rotating plate 27 is extended. With the rapid rotation of the sliding shaft 16, under the action of centrifugal force, the scum inside the fishing tube 23 is discharged. The scum will adhere to the inner wall of the connecting tank 12. At the same time, the first scraping frame 30 can clean the scum on the inner wall of the connecting tank 12 and push the scum into the slag discharge pipe 42. Subsequently, the staff opens the first valve on the slag discharge pipe 42 to collect the scum.

[0040] After the liquid is completely discharged, the second valve at one end of the discharge pipe 14 is opened, and the sediment falls into the discharge pipe 14. Subsequently, the second motor 40 is started. The output end of the second motor 40 drives the fixed shaft to rotate, and the fixed shaft drives the auger plate 39 to rotate, so as to discharge the sediment. At the same time, the first friction disk 17 is in close contact with the second friction disk 18, so that the sliding shaft 16 drives the stirring shaft 15 to rotate, and the stirring shaft 15 drives the second scraping frame 38 to rotate, so as to facilitate the complete discharge of the sediment inside the separation tank 11.

[0041] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An oil-contamination separation device for oil-based rock cuttings, comprising a separation tank (11) and a fishing pipe (23), wherein the upper end of the separation tank (11) is open, the upper end of the separation tank (11) is sleeved with a connecting tank (12), the connecting tank (12) is fixedly arranged at one end of the separation tank (11), the separation tank (11) and the connecting tank (12) are combined into a closed space, the upper end of the connecting tank (12) is connected to a liquid inlet pipe (13), the lower end of the separation tank (11) is connected to a discharge pipe (14), and the middle part of the separation tank (11) is connected to a discharge pipe (33), characterized in that: The two fishing tubes (23) are arranged in a circular array. A sliding tube (24) is fixedly provided on one side of the fishing tube (23). A first fixed tube (25) is slidably provided on the sliding tube (24). The first fixed tube (25) is fixedly provided on the sliding shaft (16). An external spline shaft (19) is fixedly provided on one end of the sliding shaft (16). An internal spline sleeve shaft (20) is matched on the external spline shaft (19). The internal spline sleeve shaft (20) is rotatably arranged in a mounting hole at the upper end of the connecting tank (12). One side of the fishing tube (23) is open. A fishing assembly is provided on the open side of the fishing tube (23) for catching scum. A cleaning mechanism is provided at the bottom end of the connecting tank (12) for cleaning scum inside the fishing tube (23). One end of the sliding shaft (16) is provided with a mixing mechanism for stirring liquid inside the separation tank (11).

2. The oil separation device for oil-based rock cuttings according to claim 1, characterized in that: The fishing assembly comprises two symmetrically arranged rotating plates (27), the opening sides of the two fishing tubes (23) are symmetrically provided with rotating plates (27), the rotating shafts at both ends of the rotating plates (27) are rotatably provided with second fixed tubes (29), the second fixed tubes (29) are fixedly provided inside the fishing tube (23), torsion springs (28) are provided between the rotating shafts at both ends of the rotating plates (27) and the inside of the second fixed tubes (29), a limiting plate is fixedly provided at one side of the fishing tube (23) at positions corresponding to the two rotating plates (27), a support plate is rotatably provided at one end of the external spline shaft (19), the two ends of the support plate are respectively fixedly connected to the output ends of two electric push rods (22), the electric push rods (22) are fixedly provided at the upper end of the connecting tank (12), and the upper end of the connecting tank (12) is provided with a driving component for driving the sliding shaft (16) to rotate.

3. The oil separation device for oil-based rock cuttings according to claim 2, characterized in that: The driving component comprises a first motor (21), a mounting frame is fixedly provided on the first motor (21), the mounting frame is fixedly provided on the upper end of the connecting tank (12), a first gear is fixedly provided on the output end of the first motor (21), a second gear is meshed with the first gear, and the second gear is fixedly provided on the internal spline sleeve shaft (20).

4. The oil separation device for oil-based rock cuttings according to claim 1, characterized in that: The mixing mechanism comprises a stirring shaft (15), one end of which is rotatably arranged at the bottom end of the separation tank (11), a plurality of stirring plates are fixedly arranged on the stirring shaft (15) at equal intervals, the other end of which is provided with a sliding groove, a connecting shaft is slidably arranged in the sliding groove, a first friction disc (17) is fixedly arranged at one end of the connecting shaft, a second friction disc (18) is tightly arranged at the bottom end of the first friction disc (17), the second friction disc (18) is fixedly arranged at the bottom end of the sliding groove, and the other end of the connecting shaft is fixedly connected to one end of the sliding shaft (16).

5. The oil-contamination separation device for oil-based rock cuttings according to claim 1, characterized in that: The cleaning mechanism comprises a friction sleeve (31), a limit ring is fixedly provided on the upper end of the friction sleeve (31), a fixed ring is rotatably provided on the limit ring, and the fixed ring is fixedly provided at the upper end of the inner part of the connecting tank (12), the friction sleeve (31) is coaxially arranged with the sliding shaft (16), a plurality of first scraper frames (30) are evenly spaced on the friction sleeve (31), the first scraper frames (30) are closely arranged with the inner wall of the connecting tank (12), and the bottom end of the friction sleeve (31) is frictionally tightly arranged. A friction ring (32) is attached, and the friction ring (32) is fixed on the sliding shaft (16). The bottom end of the connecting tank (12) is connected to a slag discharge pipe (42), and a first valve is provided on the slag discharge pipe (42). A tension spring (26) is provided between the sliding pipe (24) and the first fixed pipe (25). The first fixed pipe (25) is symmetrically provided with a limit rod. The sliding pipe (24) is provided with a limit groove at a position corresponding to the position of the limit rod. One end of the fishing pipe (23) is opened.

6. The oil-contamination separation device for oil-based rock cuttings according to claim 1, characterized in that: A second valve is provided at the connection between the discharge pipe (14) and the bottom end of the separation tank (11); a fixed shaft is rotatably provided inside the discharge pipe (14); a auger plate (39) is fixedly provided on the fixed shaft; one end of the fixed shaft is fixedly connected to a second motor (40); the second motor (40) is fixedly provided at one end of the discharge pipe (14); a second scraper frame (38) is symmetrically provided on the stirring shaft (15); the second scraper frame (38) is in close contact with the bottom end of the separation tank (11).

7. The oil-contamination separation device for oil-based rock cuttings according to claim 1, characterized in that: A mounting groove is provided at the bottom end of the separation tank (11), a pressure sensor (41) is fixedly provided in the mounting groove, and the pressure sensor (41) is electrically connected to an external control component.

8. The oil-contamination separation device for oil-based rock cuttings according to claim 1, characterized in that: An extension tube (34) is slidably provided at one end of the liquid discharge pipe (33), a mounting filter tube (35) is fixedly provided at one end of the extension tube (34), a floating ring (36) is fixedly provided at the bottom end of the mounting filter tube (35), the inside of the floating ring (36) is hollow, a plurality of counterweight blocks (37) are fixedly provided at the upper end of the mounting filter tube (35), and the other end of the liquid discharge pipe (33) is connected to an external liquid extraction component.

9. A method for using the oil-contamination separation device for oil-based rock cuttings according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: The mixed liquid enters the separation tank (11) through the liquid inlet pipe (13), the first motor (21) and the electric push rod (22) are started, the electric push rod (22) drives the external spline shaft (19) and the sliding shaft (16) to move, so that the first friction disk (17) and the second friction disk (18) are rubbed and pressed tightly, so that the stirring shaft (15) and the sliding shaft (16) rotate synchronously, the stirring shaft (15) stirs the liquid inside the separation tank (11) through the stirring plate, the output end of the electric push rod (22) drives the first friction disk (17) to separate from the second friction disk (18) through the connecting shaft, and the scum is collected by the fishing pipe (23); Step 2: During the drainage process, the output end of the electric push rod (22) makes one end of the catching tube (23) higher than the upper end of the separation tank (11), and the first motor (21) drives the two catching tubes (23) to rotate through the sliding shaft (16) to discharge the scum inside the catching tubes (23), and at the same time, the first scraper frame (30) cleans the scum on the inner wall of the connection tank (12); Step 3: After the liquid is discharged, the second motor (40) is started, and the output end of the second motor (40) drives the fixed shaft to rotate, and the fixed shaft drives the auger plate (39) to rotate, so that the sediment is discharged.

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