An apparatus and method for preparing an extreme pressure lubricant for drilling fluids.

Abstract

This invention discloses an apparatus and method for preparing an extreme pressure lubricant for drilling fluids, relating to the field of drilling fluid lubricant technology. It has the advantage of mixing vegetable oil oleic acid and fatty acid methyl ester together. The key technical points are: it includes a mixing tank and a cover plate set at the top of the mixing tank for sealing the opening of the mixing tank. The top of the cover plate is provided with a feed pipe communicating with the mixing tank. A discharge pipe is provided on the lower side of the mixing tank, and a shut-off valve is provided on the discharge pipe. The cover plate is provided with a mixing component for mixing vegetable oil oleic acid and fatty acid methyl ester in the mixing tank.

Description

Technical Field

[0001] This invention relates to the field of drilling fluid lubricant technology, specifically to an apparatus and method for preparing an extreme pressure lubricant for drilling fluid. Background Technology

[0002] Drilling fluid lubricants are mostly formulated from animal and vegetable oil derivatives, synthetic compounds (such as fatty phenolic amines), and surfactants. Most of them possess excellent lubricity; these are classified as liquid lubricants. Another type is solid lubricants, such as graphite glass microspheres, plastic microspheres, and carbon beads, which are specifically used to reduce drill pipe torque. Some lubricants also have anti-mud-packing properties and are thus called anti-mud-packing agents.

[0003] Currently, Chinese patent application number CN201710800320.9 discloses an extreme pressure lubricant for drilling fluid and its preparation method, including the following steps:

[0004] (1) Mix the vegetable oil oleic acid and fatty acid methyl ester to obtain a mixture;

[0005] (2) Vacuum distill the mixture obtained in step (1), collect the distillate, and obtain the distilled mixture;

[0006] (3) Add sulfur to the distilled mixture obtained in step (2) and perform sulfidation to obtain a sulfidated mixture;

[0007] (4) Add the castor oil polyoxyethylene ether to the vulcanized mixture and mix evenly to obtain the extreme pressure lubricant for drilling fluid.

[0008] In step (1) of the prior art, it is necessary to mix vegetable oil oleic acid and fatty acid methyl ester to obtain a mixture. Therefore, how to mix vegetable oil oleic acid and fatty acid methyl ester together is a problem that needs to be solved. Therefore, the applicant has developed a new technical solution in the actual production process to solve the problem of how to mix vegetable oil oleic acid and fatty acid methyl ester together. Summary of the Invention

[0009] The purpose of this invention is to provide an apparatus and method for preparing an extreme pressure lubricant for drilling fluid, which has the advantage of mixing vegetable oil oleic acid and fatty acid methyl ester together.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] This invention provides an apparatus for preparing an extreme pressure lubricant for drilling fluid, comprising a mixing tank and a cover plate disposed at the top of the mixing tank for sealing the opening of the mixing tank. The top of the cover plate is provided with a feed pipe communicating with the mixing tank, and a discharge pipe is provided on the lower side of the mixing tank, with a shut-off valve on the discharge pipe. The cover plate is provided with a mixing component for mixing vegetable oil oleic acid and fatty acid methyl ester in the mixing tank.

[0012] By adopting the above technical solution, when using it, vegetable oil oleic acid and fatty acid methyl ester are poured into the mixing tank in sequence through the feed pipe. Then, the mixing components on the cover plate are used to evenly mix the vegetable oil oleic acid and fatty acid methyl ester together in the mixing tank. After mixing is completed, the shut-off valve is opened and the mixture is discharged through the discharge pipe. It is simple and convenient to use.

[0013] Preferably, the mixing component includes a first rotating shaft rotatably connected to the bottom end of the cover plate, and four mixing plates are provided on the first rotating shaft, with the four mixing plates evenly distributed around the circumference of the first rotating shaft. A fixing plate is horizontally provided above one side of the inner wall of the mixing tank, and a support column located directly below the feed pipe is rotatably connected to the top of the fixing plate. A material bucket corresponding to the feed pipe is provided at the top of the support column, and a connecting pipe communicating with the material bucket is horizontally provided below the side of the material bucket near the first rotating shaft. The end of the connecting pipe near the first rotating shaft is closed by a sealing plate, and an outlet is provided at the bottom of the outer wall of the connecting pipe, located at the end of the connecting pipe near the sealing plate. The mixing tank is provided with a first driving component for driving the support column to rotate back and forth. When the support column rotates back and forth, the sealing plate and the first rotating shaft are connected by a transmission assembly, which is used to drive the first rotating shaft to rotate back and forth. The transmission assembly is located above the mixing plates.

[0014] Preferably, the first driving component includes a boss at the top of the fixed plate, and a turntable is rotatably connected to the side of the boss near the support column. A driving plate is provided on the turntable. The end of the driving plate away from the turntable is inclined towards the support column and rotatably connected to a U-shaped connecting rod. Both sides of the support column are horizontally provided with driving columns, and sleeves are rotatably connected to both driving columns on the same axis. The two ends of the connecting rod are respectively fixedly connected to the outer walls of the two sleeves. A first motor is provided at the end of the outer wall of the mixing tank near the boss, and one end of the rotating shaft of the first motor passes through the wall of the mixing tank and is fixedly connected to the turntable on the same axis.

[0015] Preferably, the transmission assembly includes an arc-shaped plate disposed on the side of the closed plate away from the connecting pipe, a first gear is coaxially fixedly connected to the first rotating shaft, and the arc-shaped plate is provided with a plurality of teeth that mesh with the first gear, and each tooth is evenly distributed along the arc direction of the arc-shaped plate.

[0016] Preferably, a rotating ring is coaxially fixedly connected to the top end of the first rotating shaft, and the rotating ring is rotatably connected to the bottom end of the cover plate. A circular groove is coaxially opened at the top end of the first rotating shaft, and a vertical column located in the circular groove is fixedly connected to the top end of the cover plate. A rotating groove is opened at one end of the first rotating shaft near the four mixing plates, and a central shaft is rotatably connected in each of the four rotating grooves. The four mixing plates are respectively fixedly connected to the four central shafts. A first bevel gear located in the circular groove is coaxially provided at one end of each of the four central shafts away from the mixing plates. A second bevel gear is coaxially provided on the vertical column, and the second bevel gear is located below the four first bevel gears and meshes with the four first bevel gears.

[0017] Preferably, the mixing component includes a groove formed at the top of the cover plate, and a rotating cylinder is rotatably connected in the groove. The bottom end of the rotating cylinder extends into the mixing tank and is provided with an inverted U-shaped mounting plate. A horizontal shaft is rotatably connected between the opposite sides of the mounting plate, and a fixing block is fixedly connected to the horizontal shaft. A second rotating shaft is vertically provided at the bottom end of the fixing block. A plurality of first mixing rods are provided on the second rotating shaft. A second driving component for driving the rotating cylinder to rotate in the groove is provided on the cover plate, and a third driving component for driving the horizontal shaft to rotate on the mounting plate is provided on the cover plate.

[0018] Preferably, the top end of the rotating drum extends outside the groove, and the second driving member includes a first worm gear coaxially fixedly connected to the rotating drum. The first worm gear is located above the cover plate. The top end of the cover plate is vertically provided with two opposing first baffles, and a first worm gear meshing with the first worm gear is rotatably connected between the two first baffles. At this time, the first worm gear is located on one side of the first worm gear, and a second motor for driving the first worm gear to rotate is provided on one of the first baffles.

[0019] The third driving component includes a connecting groove on the top of the mounting plate corresponding to the rotating drum and a drive shaft coaxially rotatably connected inside the rotating drum. The bottom end of the drive shaft passes through the connecting groove and is provided with a third bevel gear located above a horizontal shaft. A fourth bevel gear meshing with the third bevel gear is coaxially fixedly connected to the horizontal shaft, and the fourth bevel gear is located on one side of the fixed block. The top end of the drive shaft extends outside the rotating drum and is provided with a second worm gear. The top end of the cover plate is vertically provided with two opposing second baffles, and a second worm gear meshing with the second worm gear is rotatably connected between the two second baffles. At this time, the second worm gear is located on one side of the second worm gear. One of the second baffles is provided with a third motor for driving the second worm gear to rotate.

[0020] Preferably, the mixing component includes a third rotating shaft rotatably connected to the bottom end of the cover plate and three movable plates horizontally slidably connected to the bottom end of the cover plate. Each of the three movable plates has a vertically provided disturbance plate at its bottom end. The third rotating shaft is provided with a plurality of second mixing rods, and each of the second mixing rods is located below the movable plates. The cover plate is provided with a fourth motor for driving the third rotating shaft to rotate. When the third rotating shaft rotates, the third rotating shaft is provided with a driving component for simultaneously driving the three movable plates to slide horizontally back and forth on the cover plate.

[0021] Preferably, the driving component includes three cams arranged on the third rotating shaft, and the three cams are arranged along the length direction of the third rotating shaft and staggered with each other. Each of the three cams is rotatably connected to a push ring, and each of the three push rings has a push rod horizontally provided on its outer wall. The end of each of the three push rods away from the push ring is respectively hinged to one side of the three moving plates.

[0022] Another objective of this invention is to provide a method for using an apparatus for preparing extreme pressure lubricants for drilling fluids. In use, vegetable oil oleic acid and fatty acid methyl ester are poured sequentially into a mixing tank through a feed pipe. Then, the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank are uniformly mixed together through a mixing component on a cover plate. After mixing is completed, the shut-off valve is opened, and the mixture is discharged through a discharge pipe. The method is simple and convenient to use.

[0023] The beneficial effects of this invention are as follows: When in use, vegetable oil oleic acid and fatty acid methyl ester are poured into the mixing tank in sequence through the feed pipe, and then the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank are evenly mixed together by the mixing component on the cover plate. After the mixing is completed, the shut-off valve is opened and the mixture is discharged through the discharge pipe. It is simple and convenient to use. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0026] Figure 2 This is a schematic diagram illustrating the structure of the hybrid sheet in this embodiment;

[0027] Figure 3 This is a schematic diagram illustrating the structure of the curved plate in this embodiment;

[0028] Figure 4 for Figure 2 Enlarged structural diagram of section A in the middle;

[0029] Figure 5 This is a schematic diagram illustrating the structure of the second baffle in this embodiment;

[0030] Figure 6 This is a schematic diagram illustrating the structure of the first baffle in this embodiment;

[0031] Figure 7 This is a schematic diagram illustrating the structure of the feed pipe in this embodiment;

[0032] Figure 8 This is a schematic diagram illustrating the structure of the disturbance plate in this embodiment;

[0033] Figure 9 This is a schematic diagram illustrating the structure of the movable plate in this embodiment.

[0034] Explanation of reference numerals in the attached figures:

[0035] In the diagram: 1. Mixing tank; 2. Cover plate; 3. Feed pipe; 4. Discharge pipe; 5. Shut-off valve; 6. First rotating shaft; 7. Mixing plate; 8. Fixing plate; 9. Support column; 10. Material bucket; 12. Connecting pipe; 13. Sealing plate; 14. Discharge port; 15. Boss; 16. Turntable; 17. Driving plate; 18. Connecting rod; 19. Driving column; 20. Sleeve; 21. First motor; 22. Arc plate; 23. First gear; 24. Tooth; 25. Rotary ring; 26. Circular groove; 27. Vertical column; 28. Rotary groove; 29. ​​Central shaft; 30. First bevel gear; 31. Second bevel gear; 32. Groove; 33. Rotating cylinder; 34. Mounting plate; 35. Horizontal shaft; 36. Fixing block; 37. Second rotating shaft; 38. First mixing rod; 39. First worm gear; 40. First baffle; 41. First worm; 42. Second motor; 43. Connecting groove; 44. Drive shaft; 45. Third bevel gear; 46. Fourth bevel gear; 47. Second worm gear; 48. Second baffle; 49. Second worm; 50. Third motor; 51. Third rotating shaft; 52. Moving plate; 53. Disturbance plate; 54. Second mixing rod; 55. Fourth motor; 56. Cam; 57. Push ring; 58. Push rod. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] An apparatus for preparing extreme pressure lubricants for drilling fluids, such as... Figure 1The mixture includes a mixing tank 1 and a cover plate 2 set at the top of the mixing tank 1 to close the opening of the mixing tank 1. The top of the cover plate 2 is provided with a feed pipe 3 that communicates with the mixing tank 1. A discharge pipe 4 is provided on the lower side of the mixing tank 1, and a shut-off valve 5 is provided on the discharge pipe 4. The cover plate 2 is provided with a mixing component for mixing vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1.

[0038] like Figure 1 When using it, pour the vegetable oil oleic acid and fatty acid methyl ester into the mixing tank 1 through the feed pipe 3 in sequence. Then, use the mixing component on the cover plate 2 to mix the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1 evenly. After mixing, open the shut-off valve 5 and discharge it through the discharge pipe 4. It is simple and convenient to use.

[0039] like Figure 2 The mixing component includes a first rotating shaft 6 rotatably connected to the bottom of the cover plate 2, and four mixing plates 7 are provided on the first rotating shaft 6. The four mixing plates 7 are evenly distributed around the circumference of the first rotating shaft 6. A fixing plate 8 is horizontally provided above one side of the inner wall of the mixing tank 1. A support column 9 located directly below the feed pipe 3 is rotatably connected to the top of the fixing plate 8. A material bucket 10 corresponding to the feed pipe 3 is provided at the top of the support column 9. A connecting pipe 12 communicating with the material bucket 10 is horizontally provided below the side of the material bucket 10 near the first rotating shaft 6. The end of the connecting pipe 12 near the first rotating shaft 6 is closed by a sealing plate 13. An outlet 14 is opened at the bottom of the outer wall of the connecting pipe 12. The outlet 14 is located at the end of the connecting pipe 12 near the sealing plate 13. A first driving component is provided on the mixing tank 1 for driving the support column 9 to rotate back and forth. When the support column 9 rotates back and forth, the sealing plate 13 and the first rotating shaft 6 are connected by a transmission component. The transmission component is used to drive the first rotating shaft 6 to rotate back and forth. The transmission component is located above the mixing plates 7.

[0040] like Figure 2 When vegetable oil oleic acid or fatty acid methyl ester is poured into the feed pipe 3, the feed pipe 3 will discharge the vegetable oil oleic acid or fatty acid methyl ester into the material tank 10. Then, the vegetable oil oleic acid or fatty acid methyl ester in the material tank 10 will flow to the connecting pipe 12, and then be discharged from the outlet 14 on the connecting pipe 12 into the mixing tank. At this time, the first driving component drives the support column 9 to rotate back and forth on the fixed plate 8. The support column 9 drives the connecting pipe 12 to rotate along the rotation axis of the support column 9 through the material tank 10. At this time, the vegetable oil oleic acid or fatty acid methyl ester can be evenly discharged into the mixing tank 1.

[0041] When the support column 9 drives the connecting pipe 12 to rotate along the rotation axis of the support column 9 via the material bucket 10, the sealing plate 13 will also rotate along the rotation axis of the support column 9 along with the connecting pipe 12. At this time, the transmission component between the sealing plate 13 and the first rotating shaft 6 can drive the first rotating shaft 6 to rotate back and forth. The first rotating shaft 6 will then drive the four mixing plates 7 to rotate along the rotation axis of the first rotating shaft 6. At this time, the four mixing plates 7 rotating along the rotation axis of the first rotating shaft 6 can agitate and mix the vegetable oil oleic acid and fatty acid methyl ester in the mixing box. It is simple and convenient to use.

[0042] like Figure 2 and Figure 3 The first driving component includes a boss 15 set at the top of the fixed plate 8, and a turntable 16 is rotatably connected to the side of the boss 15 near the support column 9. The turntable 16 is provided with a driving plate 17. The end of the driving plate 17 away from the turntable 16 is inclined towards the support column 9 and rotatably connected to a U-shaped connecting rod 18. The support column 9 is provided with driving columns 19 on both sides, and sleeves 20 are rotatably connected to both driving columns 19 on the same axis. The two ends of the connecting rod 18 are respectively fixedly connected to the outer walls of the two sleeves 20. A first motor 21 is provided at the end of the outer wall of the mixing tank 1 near the boss 15, and one end of the rotating shaft of the first motor 21 passes through the tank wall of the mixing tank 1 and is fixedly connected to the turntable 16 on the same axis.

[0043] like Figure 2 and Figure 3 When it is necessary to drive the support column 9 to rotate back and forth, simply turn on the first motor 21. At this time, the rotating shaft of the first motor 21 will drive the turntable 16 to rotate. The turntable 16 will then drive the driving plate 17 to rotate along the rotation axis of the turntable 16. Since the end of the driving plate 17 away from the turntable 16 is inclined towards the support column 9, the connecting rod 18 is rotatably connected to the driving plate 17, and the opposite ends of the connecting rod 18 are respectively fixedly connected to the two sleeves 20. The two sleeves 20 are respectively rotatably connected to the two driving columns 19. The two driving columns 19 are set on the support column 9. Therefore, when the turntable 16 drives the driving plate 17 to rotate along the rotation axis of the turntable 16, the cooperation of the driving plate 17, the connecting rod 18, the two sleeves 20, and the two driving columns 19 can drive the support column 9 to rotate back and forth on the fixed plate 8. It is simple and convenient to use.

[0044] like Figure 2 and Figure 3 The transmission assembly includes an arc-shaped plate 22 disposed on the side of the closed plate 13 away from the connecting pipe 12. A first gear 23 is coaxially fixedly connected to the first rotating shaft 6. The arc-shaped plate 22 is provided with a plurality of teeth 24 that mesh with the first gear 23, and each tooth 24 is evenly distributed along the arc direction of the arc-shaped plate 22.

[0045] like Figure 2and Figure 3 When the sealing plate 13 rotates along the axis of rotation of the support column 9 following the connecting pipe 12, the sealing plate 13 will drive the arc plate 22 to rotate along the axis of rotation of the support column 9. At this time, through the cooperation of each tooth 24 on the arc plate 22 with the first gear 23 on the first rotating shaft 6, the first rotating shaft 6 can be driven to rotate back and forth, which is simple and convenient to use.

[0046] like Figure 2 and Figure 3 and Figure 4 A rotating ring 25 is coaxially fixedly connected to the top end of the first rotating shaft 6, and the rotating ring 25 is rotatably connected to the bottom end of the cover plate 2. A circular groove 26 is coaxially opened at the top end of the first rotating shaft 6. A vertical column 27 located in the circular groove 26 is fixedly connected to the top end of the cover plate 2. A rotating groove 28 is opened at the end of the first rotating shaft 6 near the four mixing plates 7, and a central shaft 29 is rotatably connected in each of the four rotating grooves 28. The four mixing plates 7 are respectively fixedly connected to the four central shafts 29. A first bevel gear 30 located in the circular groove 26 is coaxially provided at the end of the four central shafts 29 away from the mixing plates 7. A second bevel gear 31 is coaxially provided on the vertical column 27, and the second bevel gear 31 is located below the four first bevel gears 30 and meshes with the four first bevel gears 30.

[0047] like Figure 2 and Figure 3 and Figure 4 When the first rotating shaft 6 rotates, it drives the four mixing plates 7 to rotate along the rotation axis of the first rotating shaft 6 through the cooperation of the four rotating grooves 28 and the four central shafts 29. At this time, since the central shafts 29 are rotatably connected in the rotating grooves 28, and the first bevel gears 30 on the four central shafts 29 mesh with the second bevel gears 31 on the vertical column 27, and the vertical column 27 is fixedly connected to the cover plate 2, when the four mixing plates 7 rotate along the rotation axis of the first rotating shaft 6, through the cooperation of the first bevel gears 30 on the four central shafts 29 and the second bevel gears 31 on the vertical column 27, the four mixing plates 7 can rotate along the rotation axis of the first rotating shaft 6 and the rotation axis of the central shaft 29 in the rotating grooves 28 at the same time. This increases the disturbance effect of the mixing plates 7 on the oleic acid of vegetable oil and the methyl ester of fatty acids in the mixing tank 1, making it easier to mix the oleic acid of vegetable oil and the methyl ester of fatty acids, and making it simple and convenient to use.

[0048] like Figure 5 and Figure 6Alternatively, the mixing component includes a groove 32 formed at the top of the cover plate 2, and a rotating cylinder 33 is rotatably connected within the groove 32. The bottom end of the rotating cylinder 33 extends into the mixing tank 1 and is provided with an inverted U-shaped mounting plate 34. A horizontal shaft 35 is rotatably connected between opposite sides of the mounting plate 34, and a fixing block 36 is fixedly connected to the horizontal shaft 35. A second rotating shaft 37 is vertically provided at the bottom end of the fixing block 36. A plurality of first mixing rods 38 are provided on the second rotating shaft 37. The cover plate 2 is provided with a second driving component for driving the rotating cylinder 33 to rotate within the groove 32, and the cover plate 2 is provided with a component for driving water... The third driving component, which rotates on the mounting plate 34, has a flat shaft 35. The top end of the rotating drum 33 extends outside the groove 32. The second driving component includes a first worm gear 39 coaxially fixedly connected to the rotating drum 33. The first worm gear 39 is located above the cover plate 2. The top end of the cover plate 2 is vertically provided with two opposing first baffles 40. A first worm 41 that meshes with the first worm gear 39 is rotatably connected between the two first baffles 40. At this time, the first worm 41 is located on one side of the first worm gear 39. A second motor 42 for driving the first worm 41 to rotate is provided on one of the first baffles 40.

[0049] The third driving component includes a connecting groove 43 on the top of the mounting plate 34 corresponding to the rotating drum 33, and a drive shaft 44 rotatably connected to the rotating drum 33. The bottom end of the drive shaft 44 passes through the connecting groove 43 and is provided with a third bevel gear 45 located above the horizontal shaft 35. A fourth bevel gear 46 that meshes with the third bevel gear 45 is coaxially fixedly connected to the horizontal shaft 35, and the fourth bevel gear 46 is located on one side of the fixing block 36. The top end of the drive shaft 44 extends to the outside of the rotating drum 33 and is provided with a second worm gear 47. The top end of the cover plate 2 is vertically provided with two opposing second baffles 48, and a second worm 49 that meshes with the second worm gear 47 is rotatably connected between the two second baffles 48. At this time, the second worm 49 is located on one side of the second worm gear 47. A third motor 50 for driving the second worm 49 to rotate is provided on one of the second baffles 48.

[0050] like Figure 5 and Figure 6The second rotating shaft 37 is initially vertical. When it is necessary to mix the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1, the second motor 42 is turned on. At this time, the rotating shaft of the second motor 42 will drive the first worm 41 to rotate. The first worm 41 will drive the rotating drum 33 to rotate in the groove 32 through the first worm wheel 39 meshing with it. At the same time as the second motor 42 is turned on, the third motor 50 is turned on. At this time, the rotating shaft of the third motor 50 will drive the second worm 49 to rotate. The second worm 49 will drive the drive shaft 44 to rotate synchronously with the rotating drum 33 through the second worm wheel 47 meshing with it. At this time, the second rotating shaft 37, the fixed block 36, the horizontal shaft 35, the mounting plate 34, the drive shaft 44, the third bevel gear 45, and the fourth bevel gear 46 will all follow the rotating drum 33 and rotate along the rotation axis of the rotating drum 33. At this time, the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1 can be agitated and mixed through the first mixing rods 38 on the second rotating shaft 37.

[0051] During the rotation of the second rotating shaft 37, fixed block 36, horizontal shaft 35, mounting plate 34, drive shaft 44, third bevel gear 45, and fourth bevel gear 46 along the rotation axis of the rotating drum 33, the third motor 50 is turned off. At this time, the drive shaft 44 and the third bevel gear 45 stop rotating. Because the third bevel gear 45 and the fourth bevel gear 46 are meshed, the cooperation between the third bevel gear 45 on the drive shaft 44 and the fourth bevel gear 46 on the horizontal shaft 35 allows the horizontal shaft 35 to rotate on the mounting plate 34. The horizontal shaft 35 will drive the second rotating shaft 37 to rotate along the rotation axis of the horizontal shaft 35 on the mounting plate 34 through the fixing block 36 until the second rotating shaft 37 is rotated to an inclined state. Then the third motor 50 is turned on, so that the drive shaft 44 and the rotating drum 33 rotate synchronously again. At this time, the second rotating shaft 37, after being rotated to the inclined state, will maintain the inclined state. This increases the range of disturbance of the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1 by each first mixing rod 38 on the second rotating shaft 37, which facilitates the mixing of vegetable oil oleic acid and fatty acid methyl ester. It is simple and convenient to use.

[0052] like Figure 7 and Figure 8 and Figure 9Alternatively, the mixing component includes a third rotating shaft 51 rotatably connected to the bottom end of the cover plate 2 and three moving plates 52 slidably connected to the bottom end of the cover plate 2. The bottom ends of the three moving plates 52 are vertically provided with disturbance plates 53. The third rotating shaft 51 is provided with several second mixing rods 54, and each of the second mixing rods 54 is located below the moving plates 52. The cover plate 2 is provided with a fourth motor 55 for driving the third rotating shaft 51 to rotate. When the third rotating shaft 51 rotates, the third rotating shaft 51 is provided with a driving component for simultaneously driving the three moving plates 52 to slide horizontally back and forth on the cover plate 2. The driving component includes three cams 56 provided on the third rotating shaft 51, and the three cams 56 are arranged along the length direction of the third rotating shaft 51 and staggered with each other. Each of the three cams 56 is rotatably connected with a push ring 57 on the same axis, and each of the three push rings 57 is provided with a push rod 58 horizontally on the outer wall of the push ring 57. The end of each of the three push rods 58 away from the push ring 57 is hinged to one side of the three moving plates 52.

[0053] like Figure 7 and Figure 8 and Figure 9 When it is necessary to mix the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1, simply turn on the fourth motor 55. At this time, the rotating shaft of the fourth motor 55 will drive the third rotating shaft 51 to rotate. Then, the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1 can be agitated and mixed through the second mixing rods 54 on the third rotating shaft 51.

[0054] When the third rotating shaft 51 rotates, it drives the three cams 56 to rotate along the rotation axis of the third rotating shaft 51. At this time, since the three push rings 57 are rotatably connected to the three cams 56 respectively, and the push rods 58 on the three push rings 57 are hinged to the three moving plates 52 respectively, when the third rotating shaft 51 drives the three cams 56 to rotate along the rotation axis of the third rotating shaft 51, through the cooperation of the three cams 56, the three push rings 57 and the three push rods 58, the three moving plates 52 can be pushed to slide back and forth on the cover plate 2 respectively. At this time, through the disturbance plates 53 on the three moving plates 52, the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank 1 can be further disturbed and mixed. The moving plates 52 move towards or away from the third rotating shaft 51, which is simple and convenient to use.

[0055] Example 2: A method of using an apparatus for preparing extreme pressure lubricant for drilling fluid, including Example 1. In use, vegetable oil oleic acid and fatty acid methyl ester are poured into mixing tank 1 sequentially through feed pipe 3. Then, the vegetable oil oleic acid and fatty acid methyl ester in mixing tank 1 are evenly mixed together through the mixing component on cover plate 2. After mixing is completed, the shut-off valve 5 is opened and the mixture is discharged through discharge pipe 4. It is simple and convenient to use.

[0056] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An apparatus for preparing an extreme pressure lubricant for drilling fluids, characterized in that, It includes a mixing tank (1) and a cover plate (2) set on the top of the mixing tank (1) for sealing the opening of the mixing tank (1). The top of the cover plate (2) is provided with a feed pipe (3) communicating with the mixing tank (1). A discharge pipe (4) is provided on the lower side of the mixing tank (1), and a shut-off valve (5) is provided on the discharge pipe (4). The cover plate (2) is provided with a mixing component for mixing vegetable oil oleic acid and fatty acid methyl ester in the mixing tank (1). The mixing component includes a groove (32) formed at the top of the cover plate (2), and a rotating cylinder (33) is rotatably connected in the groove (32). The bottom end of the rotating cylinder (33) extends into the mixing barrel (1) and is provided with an inverted U-shaped mounting plate (34). A horizontal shaft (35) is rotatably connected between the opposite sides of the mounting plate (34), and a fixing block (36) is fixedly connected on the horizontal shaft (35). A second rotating shaft (37) is vertically provided at the bottom end of the fixing block (36), and a plurality of first mixing rods (38) are provided on the second rotating shaft (37). The cover plate (2) is provided with a second driving member for driving the rotating drum (33) to rotate in the groove (32), and the cover plate (2) is provided with a third driving member for driving the horizontal shaft (35) to rotate on the mounting plate (34); The top end of the rotating drum (33) extends outside the groove (32). The second driving member includes a first worm wheel (39) coaxially fixedly connected to the rotating drum (33). The first worm wheel (39) is located above the cover plate (2). The top end of the cover plate (2) is vertically provided with two opposing first baffles (40), and a first worm (41) meshing with the first worm wheel (39) is rotatably connected between the two first baffles (40). At this time, the first worm (41) is located on one side of the first worm wheel (39). One of the first baffles (40) is provided with a second motor (42) for driving the first worm (41) to rotate. The third driving component includes a connecting groove (43) on the top of the mounting plate (34) corresponding to the rotating drum (33) and a drive shaft (44) coaxially rotatably connected inside the rotating drum (33). The bottom end of the drive shaft (44) passes through the connecting groove (43) and is provided with a third bevel gear (45) located above the horizontal shaft (35). A fourth bevel gear (46) coaxially and fixedly connected to the horizontal shaft (35) and meshing with the third bevel gear (45) is located on the fixed block (36). On one side, the top end of the drive shaft (44) extends to the outside of the rotating drum (33) and is provided with a second worm gear (47). The top end of the cover plate (2) is provided with two opposing second baffles (48), and the two second baffles (48) are rotatably connected to a second worm (49) that meshes with the second worm gear (47). At this time, the second worm (49) is located on one side of the second worm gear (47), and a third motor (50) for driving the second worm (49) to rotate is provided on one of the second baffles (48).

2. A method of using the apparatus for preparing an extreme pressure lubricant for drilling fluid according to claim 1, characterized in that, When using, the vegetable oil oleic acid and fatty acid methyl ester are poured into the mixing tank (1) through the feed pipe (3) in sequence. Then, the vegetable oil oleic acid and fatty acid methyl ester in the mixing tank (1) are evenly mixed together through the mixing component on the cover plate (2). After the mixing is completed, the shut-off valve (5) is opened and the mixture is discharged through the discharge pipe (4).

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