A drilling fluid centrifuge apparatus for use in oil exploration

Abstract

The application relates to the technical field of mechanical equipment, in particular to a drilling fluid centrifuge device for oil exploitation, which comprises a screw propeller, a rotating drum, a driving assembly, a cleaning assembly I and a cleaning assembly II. According to the working principle of the existing horizontal screw centrifuge, the screw propeller rotates in the same direction as the rotating drum, but the rotating speed is lower than that of the rotating drum. Three roller brushes are rotationally connected to the outer side of the screw propeller, the right ends of the three roller brushes are rotationally connected to a tripod, the tripod is fixedly connected to the right end of the screw propeller, a gear is fixedly connected to the position close to the right end of the three roller brushes, a tooth ring is fixedly connected to the inner wall of the right end of the rotating drum, the tooth ring is engaged with the gear, so that the tooth ring is driven to rotate when the rotating drum rotates, and then the engagement between the tooth ring and the gear drives the gear to rotate, so that the gear drives the roller brushes to rotate, and the stationary ring layer on the inner wall of the rotating drum is further cleaned when the roller brushes rotate.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, specifically to a drilling fluid centrifuge for oil extraction. Background Technology

[0002] The system consists of a high-speed rotating drum, a screw conveyor with a hollow shaft rotating in the same direction but at a slightly lower speed, and a differential gear. When the suspension to be separated is fed into the drum through the hollow shaft, it is immediately thrown into the drum cavity by the centrifugal force generated by the high-speed rotation. The high-speed rotation of the drum generates a strong centrifugal force that throws solid particles, which are denser than the liquid phase, onto the inner wall of the drum, forming a solid layer (called the solid ring layer because it is annular). Water, due to its lower density and weaker centrifugal force, forms a liquid layer inside the solid ring layer, called the liquid ring layer. Because of the different rotational speeds of the screw and the drum, there is relative motion between them (i.e., a speed difference). This relative motion slowly pushes the sludge in the solid ring layer to the conical end of the drum, and after passing through the drying zone, it is continuously discharged from the outlets distributed around the circumference of the drum. The liquid in the liquid ring layer is continuously "overflowed" from the weir to the outside of the drum by gravity, forming the separated liquid.

[0003] The existing Chinese patent with authorization number CN117414955B includes a rotating drum, a screw propeller located inside the rotating drum, and a cover covering the rotating drum. It also includes a slag discharge cylinder, which is detachably installed at the discharge end of the rotating drum. The slag discharge cylinder has several slag discharge holes circumferentially opened on its surface. The slag discharge cylinder is connected to the inside of the rotating drum. An adjustment component is detachably installed on the end of the slag discharge cylinder away from the rotating drum. The screw propeller extends into the slag discharge cylinder and the adjustment component in sequence. The cover is rotatably installed on the end of the slag discharge cylinder away from the rotating drum. An annular grinding disc is installed inside the slag discharge cylinder and sleeved on the screw propeller. The annular grinding disc is connected to the adjustment component.

[0004] The main drawbacks of existing horizontal decanter centrifuges are:

[0005] Due to the rotation, the propeller will have inertial force when it rotates, which will cause friction between the propeller and the inner wall of the drum. After long-term use, the propeller may be unable to remove the solid ring layer inside the drum. Summary of the Invention

[0006] The purpose of this invention is to provide a drilling fluid centrifuge for oil extraction to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] A drilling fluid centrifuge for oil extraction includes a auger, a drum, a drive assembly, a first cleaning assembly, and a second cleaning assembly. The auger is rotatably mounted within the inner cavity of the drum, which is rotatably connected to the drive assembly. The right end of the first cleaning assembly is fixedly connected to the right end of the auger and is located on the outside of the auger. The right end of the second cleaning assembly is fixedly connected to the outer side of the first cleaning assembly near its right end and is located within the inner cavity of the auger.

[0009] The cleaning assembly includes: three roller brushes, which are rotatably connected to the outside of a auger; the right ends of the three roller brushes are rotatably connected to a tripod, which is fixedly connected to the right end of the auger; and gears are fixedly connected to the three roller brushes near their right ends; and

[0010] A gear ring is fixedly connected to the inner wall of the right end of the drum, and the gear ring meshes with a gear.

[0011] The second cleaning component includes:

[0012] A guide rod is provided, one end of which is fixedly connected to the right end of the screw propeller. A slider is slidably connected to the guide rod. Three rotating shafts are rotatably connected inside the screw propeller. Rotating propulsion blocks are fixedly connected to the rotating shafts. A sliding groove is provided along the outer curved surface of the rotating propulsion block. The sliding groove is symmetrically arranged about the plane containing the axis of the rotating propulsion block. Three sliding rods are fixedly connected to the outer side of the slider. The other end of the sliding rod is slidably connected to the sliding groove.

[0013] Furthermore, a synchronous pulley is fixedly connected to the right end of each of the three rotating shafts, and a synchronous pulley is also fixedly connected to the right end of each of the three roller brushes. The two synchronous pulleys are driven by a synchronous belt.

[0014] Furthermore, the driving component includes:

[0015] A bracket is provided, on which a motor is fixedly connected. The output end of the motor is fixedly connected to one end of the drive shaft, and the other end of the drive shaft is fixedly connected to a differential. The differential is fixedly connected to a screw propeller and a rotating drum, respectively. A worktable is also fixedly connected to the bracket, and the rotating drum is rotatably connected to the worktable.

[0016] Furthermore, a second synchronous pulley is fixedly connected to the drive shaft, and driven shafts are rotatably connected to both sides of the worktable. One end of the driven shaft is fixedly connected to the second synchronous pulley, which is driven by a second synchronous belt.

[0017] Furthermore, a cam is fixedly connected to the other end of the driven shaft, and a push rod is slidably connected to the worktable. A spring is sleeved on the push rod, and one end of the push rod abuts against the cam.

[0018] Furthermore, the lower part of the workbench is provided with a slag discharge port and a liquid discharge port, and a connecting platform is fixedly connected to the right end of the bracket.

[0019] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0020] 1. Based on the existing working principle of the horizontal screw centrifuge, the screw propeller rotates in the same direction as the drum, but at a lower speed. Three roller brushes are rotatably connected to the outside of the screw propeller, and the right ends of the three roller brushes are rotatably connected to a tripod. The tripod is fixedly connected to the right end of the screw propeller. Gears are fixedly connected to the three roller brushes near their right ends. The gear ring is fixedly connected to the inner wall of the right end of the drum. The gear ring meshes with the gear, so when the drum rotates, it drives the gear ring to rotate. In turn, through the meshing action of the gear ring and the gear, the gear drives the roller brush to rotate, so that the solid ring layer on the inner wall of the drum is further cleaned when the roller brush rotates.

[0021] 2. When the roller brush rotates, it drives the synchronous wheel that is fixedly connected to it to rotate. In turn, through the transmission action of the synchronous belt, it drives the rotating shaft that is fixedly connected to the synchronous wheel to rotate. The roller brush rotates at the same time, which drives the rotating propulsion block that is fixedly connected to the rotating shaft to rotate. Through the cooperation of the sliding groove and the sliding rod, the slider slides back and forth on the guide rod, thereby cleaning the inside of the screw propeller.

[0022] 3. When the motor rotates, it drives the drive shaft to rotate, which in turn causes the synchronous pulley fixedly connected to the drive shaft to rotate. Through the transmission action of the synchronous belt, the driven shaft rotates, which in turn drives the push rod to slide on the worktable. When the push rod slides inward, the spring is compressed, and at the same time, the other end of the push rod strikes the outer surface of the drum. When the push rod slides outward, the spring returns to its original position. In this way, the solid ring layer remaining in the drum can be better cleaned. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the cleaning component of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the cleaning component two of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged view of region A in the middle;

[0029] Figure 5 This is a schematic diagram of the overall three-dimensional structure of the push rod of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall three-dimensional structure of the workbench of the present invention;

[0031] Figure 7 This is a schematic diagram of the overall three-dimensional structure of the cam of the present invention;

[0032] Figure 8 This is an exploded three-dimensional structural diagram of the cleaning component two of the present invention.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Propeller;

[0035] 2. Rotating drum;

[0036] 3. Drive assembly; 31. Bracket; 311. Connecting platform; 32. Motor; 33. Drive shaft; 331. Synchronous pulley two; 332. Driven shaft; 333. Synchronous belt two; 334. Cam; 335. Push rod; 336. Spring; 34. Differential; 35. Worktable; 351. Slag discharge port; 352. Liquid discharge port;

[0037] 4. Cleaning component one; 41. Roller brush; 42. Tripod; 43. Gear; 44. Gear ring;

[0038] 5. Cleaning component two; 51. Guide rod; 52. Slider; 521. Slide rod; 53. Rotating shaft; 531. Synchronous pulley one; 532. Synchronous belt one; 54. Rotating propulsion block; 541. Slide groove. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0040] Reference Figure 1-4 As shown in Figure 8, a drilling fluid centrifuge for oil extraction includes a auger propeller 1, a drum 2, a drive assembly 3, a first cleaning assembly 4, and a second cleaning assembly 5. The auger propeller 1 is rotatably disposed within the inner cavity of the drum 2, and the drum 2 is rotatably connected to the drive assembly 3. The right end of the first cleaning assembly 4 is fixedly connected to the right end of the auger propeller 1, and the first cleaning assembly 4 is disposed on the outer side of the auger propeller 1.

[0041] The right end of the second cleaning component 5 is fixedly connected to the external part of the first cleaning component 4 near its right end, and the second cleaning component 5 is disposed in the inner cavity of the spiral propeller 1; wherein

[0042] The cleaning component 4 includes:

[0043] Three roller brushes 41 are rotatably connected to the outside of the screw propeller 1. The right ends of the three roller brushes 41 are rotatably connected to a tripod 42, which is fixedly connected to the right end of the screw propeller 1. Gears 43 are fixedly connected to the three roller brushes 41 near their right ends.

[0044] Gear ring 44, which is fixedly connected to the inner wall of the right end of the drum 2, and meshes with gear 43;

[0045] The cleaning component 25 includes:

[0046] A guide rod 51 is fixedly connected at one end to the right end of the screw propeller 1. A slider 52 is slidably connected to the guide rod 51. Three rotating shafts 53 are rotatably connected in the inner cavity of the screw propeller 1. A rotating propulsion block 54 is fixedly connected to the rotating shaft 53. A groove 541 is formed along the outer curved surface of the rotating propulsion block 54. The groove 541 is symmetrically arranged about the plane containing the axis of the rotating propulsion block 54. Three sliding rods 521 are fixedly connected to the outer side of the slider 52. The other end of the sliding rod 521 is slidably connected in the groove 541.

[0047] The left end of the screw propeller 1 and the right end of the drum are conical, and the right end is large. According to the working principle of the existing horizontal screw centrifuge, the screw propeller 1 rotates in the same direction as the drum 2, but the speed is lower than that of the drum 2. Three roller brushes 41 are rotatably connected to the outside of the screw propeller 1. The right ends of the three roller brushes 41 are rotatably connected to the tripod 42. The tripod 42 is fixedly connected to the right end of the screw propeller 1. Gears 43 are fixedly connected to the three roller brushes 41 near the right end. The toothed ring 44 is fixedly connected to the inner wall of the right end of the drum 2. The toothed ring 44 meshes with the gear 43. Therefore, when the drum 2 rotates, it drives the toothed ring 44 to rotate. Then, through the meshing of the toothed ring 44 and the gear 43, the gear 43 drives the roller brushes 41 to rotate. When the roller brushes 41 rotate, they drive the rotating shaft 53 to rotate. Then, they drive the rotating propulsion block 54, which is fixedly connected to the rotating shaft 53, to rotate. Through the cooperation of the sliding groove 541 and the sliding rod 521, the slider 52 slides back and forth on the guide rod 51.

[0048] Each of the three rotating shafts 53 has a synchronous pulley 531 fixedly connected to its right end, and each of the three roller brushes 41 has a synchronous pulley 531 fixedly connected to its right end. The two synchronous pulleys 531 are driven by a synchronous belt 532.

[0049] When the roller brush 41 rotates, it drives the synchronous pulley 531, which is fixedly connected to it, to rotate. In turn, through the transmission action of the synchronous belt 532, it drives the rotating shaft 53, which is fixedly connected to the synchronous pulley 531, to rotate.

[0050] The driving component 3 includes:

[0051] A bracket 31 is provided, on which a motor 32 is fixedly connected. The output end of the motor 32 is fixedly connected to one end of a drive shaft 33, and the other end of the drive shaft 33 is fixedly connected to a differential 34. The differential 34 is fixedly connected to a screw propeller 1 and a drum 2 respectively. A worktable 35 is also fixedly connected to the bracket 31, and the drum 2 is rotatably connected to the worktable 35.

[0052] The output end of the motor 32 is fixedly connected to one end of the drive shaft 33, and the other end of the drive shaft 33 is fixedly connected to the differential 34. The differential 34 is fixedly connected to the screw propeller 1 and the drum 2 respectively. The motor 32 drives the differential 34 to rotate, which in turn drives the drum 2 and the screw propeller 1 to rotate. The differential 34 makes the speed of the screw propeller 1 lower than that of the drum 2. A worktable 35 is also fixedly connected to the bracket 31, and the drum 2 is rotatably connected to the worktable 35.

[0053] Reference Figure 5 and 7 As shown, a synchronous pulley 331 is fixedly connected to the drive shaft 33, and driven shafts 332 are rotatably connected to both sides of the worktable 35. One end of the driven shaft 332 is fixedly connected to the synchronous pulley 331, and the synchronous pulley 331 is driven by the synchronous belt 333.

[0054] The other end of the driven shaft 332 is fixedly connected to a cam 334, and a push rod 335 is slidably connected to the worktable 35. A spring 336 is sleeved on the push rod 335, and one end of the push rod 335 abuts against the cam 334.

[0055] When the motor 32 rotates, it drives the drive shaft 33 to rotate, which in turn causes the synchronous pulley fixedly connected to the drive shaft 33 to rotate. Through the transmission action of the synchronous belt 333, the driven shaft 332 rotates, which in turn drives the push rod 335 to slide on the worktable 35. When the push rod 335 slides inward, the spring 336 is compressed. At the same time, the other end of the push rod 335 strikes the outer surface of the drum 2. When the push rod 335 slides outward, the spring 336 returns to its original position.

[0056] Reference Figure 6 As shown, the lower part of the workbench 35 is provided with a slag discharge port 351 and a liquid discharge port 352. The right end of the support 31 is fixedly connected to a connecting platform 311, and the motor 32 is fixedly connected to the connecting platform 311.

[0057] By utilizing the relative speed difference between the screw propeller 1 and the drum 2, solid impurities are separated from the liquid and discharged from the slag discharge port 351 and the liquid discharge port 352 respectively, thereby achieving the purpose of centrifugal slag removal. A flip-top device can be installed at the upper opening of the worktable 35. This design is existing technology to prevent the liquid from being thrown out by centrifugal force when the drum rotates.

[0058] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0059] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling fluid centrifuge apparatus for use in oil exploration, characterised in that: The utility model provides a cleaning device for spiral propeller, including spiral propeller (1), drum (2), drive assembly (3), cleaning assembly one (4) and cleaning assembly two (5), spiral propeller (1) rotation is arranged in the inner chamber of drum (2), drum (2) rotation is connected on drive assembly (3), the right -hand member of cleaning assembly one (4) is fixedly connected with the right -hand member of spiral propeller (1), cleaning assembly one (4) is located the outside of spiral propeller (1), the right -hand member of cleaning assembly two (5) is fixedly connected on the outside of cleaning assembly one (4) near right -hand member, cleaning assembly two (5) is located in the inner chamber of spiral propeller (1), wherein Cleaning assembly one (4) includes three roll brushes (41), three roll brushes (41) rotation is connected on the outside of spiral propeller (1), the right -hand member of three roll brushes (41) is rotationally connected on tripod (42), tripod (42) is fixedly connected with the right -hand member of spiral propeller (1), the right -hand member of three roll brushes (41) is fixedly connected with gear (43) on the position near right -hand member, and Gear ring (44) is fixedly connected with the inner wall of the right -hand member of drum (2), gear ring (44) is engaged with gear (43), Cleaning assembly two (5) includes One end of guide rod (51) is fixedly connected in the right -hand member of spiral propeller (1), slidingly connected with sliding block (52) on guide rod (51), three rotation shafts (53) are rotationally connected in the inner chamber of spiral propeller (1), rotation propelling block (54) is fixedly connected on rotation shaft (53), sliding slot (541) is set up on the outside curved surface of rotation propelling block (54), sliding slot (541) is symmetrically arranged about the plane where the axis of rotation propelling block (54) is located, the outside of sliding block (52) is fixedly connected with three slide rods (521), the other end of slide rod (521) is slidingly connected in sliding slot (541).

2. A drilling fluid centrifuge apparatus for use in oil exploration as claimed in claim 1, wherein: The right -hand member of three rotation shafts (53) is fixedly connected with one synchronous pulley one (531), the right -hand member of three roll brushes (41) is also fixedly connected with one synchronous pulley one (531), and two synchronous pulley one (531) are driven through synchronous belt one (532).

3. A drilling fluid centrifuge apparatus for use in oil exploration as claimed in claim 2, wherein: Drive assembly (3) includes Support (31) is fixedly connected with motor (32) on support (31), the output end of motor (32) is fixedly connected with one end of driving shaft (33), the other end of driving shaft (33) is fixedly connected with differential (34), differential (34) is fixedly connected with spiral propeller (1) and drum (2) respectively, workbench (35) is further fixedly connected on support (31), and drum (2) is rotationally connected on workbench (35).

4. A drilling fluid centrifuge apparatus for use in oil exploration as claimed in claim 3, wherein: Driving shaft (33) is fixedly connected with one synchronous pulley two (331), and both sides of workbench (35) are rotationally connected with driven shaft (332), one end of driven shaft (332) is fixedly connected with synchronous pulley two (331), and synchronous pulley two (331) is driven through synchronous belt two (333).

5. A drilling fluid centrifuge apparatus for use in oil exploration as claimed in claim 4, wherein: The other end of the driven shaft (332) is fixedly connected with a cam (334), the workbench (35) is slidably connected with a jacking rod (335), the jacking rod (335) is sleeved with a spring (336), and one end of the jacking rod (335) abuts against the cam (334).

6. A drilling fluid centrifuge apparatus for use in oil exploration as claimed in claim 5, wherein: The lower part of the workbench (35) is provided with a residue discharging port (351) and a liquid discharging port (352), and the right end of the support (31) is fixedly connected with a connecting table (311).

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