A preparation device and method for polymer fluid loss reducer for drilling fluid

Abstract

The invention discloses a preparation device and method of a polymer fluid loss reducer for drilling fluid, relates to the technical field of fluid loss reducer production, has the advantage of automatically moving a placement plate out of a vacuum drying oven, thereby reducing the situation where the placement plate scalds workers, and the main points of the technical scheme are: comprising a vacuum drying oven body, one side of the vacuum drying oven body is rotatably connected with a box door, the interior of the vacuum drying oven body is a drying chamber, the vacuum drying oven body is provided with an air guide hole for injecting inert gas, one side of the vacuum drying oven body is provided with a vacuum pump, the vacuum pump is used to evacuate the drying chamber, a heater is provided inside the vacuum drying oven body, a placement plate for placing a reaction crude product is placed at the bottom of the interior of the vacuum drying oven body, a fixed plate is provided on the vacuum drying oven body, a rotating plate is rotatably connected with the fixed plate, a transfer member for transferring the placement plate to the rotating plate is provided on the rotating plate, and a servo motor is provided on the fixed plate.

Description

Technical Field

[0001] The invention relates to the technical field of fluid loss reducer production, and in particular to a preparation device and method of a polymer fluid loss reducer for drilling fluid. Background Art

[0002] Fluid loss reducers refer to chemical agents that can reduce the amount of drilling fluid loss. Fluid loss reducers can reduce the amount of drilling fluid loss by stabilizing colloidal particles, increasing filtrate viscosity, plugging holes, etc., forming a "filter cake" on the well wall to protect the well wall and maintain downhole operation stability. With the exploration and development of oil and gas resources gradually moving towards deep formations and unconventional oil and gas reservoirs in recent years, the difficulty of mining has gradually increased, the mining operation surface has become increasingly complex, and the requirements for drilling fluid performance have also continued to increase.

[0003] At present, a Chinese patent application number CN201810815057.5 on the market discloses a method for preparing a polymer fluid loss reducer for oil-based drilling fluid, the method comprising the following steps:

[0004] (1) Add methanol and deionized water into a three-necked flask and stir for 20 minutes to make them evenly mixed;

[0005] (2) adding polyvinyl pyrrolidone as a dispersant to step (1) while introducing nitrogen, and dissolving it by magnetic stirring at room temperature at a speed of 1000-2000 rpm;

[0006] (3) adding acrylamide and octadecyl methacrylate to step (2), stirring evenly, adding initiator azobisisobutyronitrile, placing it in a water bath and heating it evenly to 70° C., and then starting a timing reaction for 5 hours, while adding crosslinking agent divinylbenzene at different reaction time periods;

[0007] (4) After the reaction is completed, the reaction product is cooled to room temperature, centrifuged and washed with anhydrous ethanol for 3-5 times to remove unreacted monomers, and finally placed in a vacuum drying oven for vacuum drying to obtain a polymer fluid loss reducer for oil-based drilling fluid.

[0008] In the above-mentioned prior art, the crude reaction product needs to be placed on a placement plate in a vacuum drying oven for drying. After drying, the vacuum drying oven usually requires manual removal of the placement plate from the vacuum drying oven. When the placement plate is manually removed, the placement plate is likely to scald the staff. Therefore, the applicant has developed a new technical solution in the actual production process to solve the problem that the placement plate is likely to scald the staff. Summary of the invention

[0009] The purpose of the present invention is to provide a preparation device and method of a polymer fluid loss reducer for drilling fluid, which has the advantage of automatically moving a placement plate out of a vacuum drying box, thereby reducing the situation where the placement plate scalds workers.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] The invention provides a preparation device of a polymer fluid loss reducer for drilling fluid, comprising a vacuum drying box body, one side of the vacuum drying box body is rotatably connected with a box door, the interior of the vacuum drying box body is a drying chamber, the vacuum drying box body is provided with a gas guide hole for injecting an inert gas, one side of the vacuum drying box body is provided with a vacuum pump, the vacuum pump is used to evacuate the drying chamber, a heater is provided inside the vacuum drying box body, a placement plate for placing a crude reaction product is placed at the bottom of the interior of the vacuum drying box body, a fixed plate is provided below one side of the vacuum drying box body close to the box door, and a rotating plate is rotatably connected to the fixed plate, when the box door is opened, a transfer member for transferring the placement plate in the vacuum drying box body to the rotating plate is provided on the rotating plate, and a servo motor for driving the rotating plate to rotate is provided on the fixed plate.

[0012] By adopting the above technical scheme, the drying chamber is evacuated to a vacuum by turning on the vacuum pump, and then the inert gas is filled into the interior of the drying chamber through the air guide hole, and the heater is started to heat the drying chamber to dry the crude reaction product on the placement plate. When the crude reaction product is dried, the box door is opened, and then the servo motor is turned on. The rotating shaft of the servo motor drives the rotating plate to rotate until the transfer member on the rotating plate is aligned with the placement plate in the vacuum drying box body, and then the placement plate in the vacuum drying box body is transferred to the rotating plate through the transfer member, and then the servo motor works again until the placement plate is turned away from the vacuum drying box body. At this time, the placement plate can be automatically moved out of the vacuum drying box, thereby reducing the occurrence of scalding of the staff by the placement plate. The use is simple and convenient.

[0013] Preferably, the transfer member includes a movable plate connected to the rotating plate for horizontal sliding along the length direction of the rotating plate and an embedding groove arranged at the top of the movable plate, a vertical rod is vertically slidably connected in the embedding groove, the top of the vertical rod extends out of the embedding groove and is horizontally provided with a horizontal rod, the horizontal rod is vertically provided with an insertion rod at one end away from the vertical rod, a slot is provided at the top of the placement plate, and a moving member for pushing the movable plate to slide back and forth horizontally is provided on the rotating plate. When the moving member pushes the movable plate to move horizontally so that one side of the movable plate contacts the placement plate in the vacuum drying box body, a driving member for driving the vertical rod to move vertically downward is provided on the rotating plate, and at this time the insertion rod is vertically inserted into the slot.

[0014] Preferably, the movable part includes a mounting frame vertically on the top of the rotating plate, the mounting frame is located on one side of the movable plate, the mounting frame is rotatably connected to an internal hollow rotating shaft, and the rotating shaft is horizontally arranged, a push column is horizontally provided at one end of the movable plate close to the rotating shaft, two spiral grooves connected to the rotating shaft are rotated on the rotating shaft along the length direction of the rotating shaft, the push column passes through the two spiral grooves at one end away from the movable plate, and a driving motor for driving the rotating shaft to rotate is provided on the mounting frame.

[0015] Preferably, a convex strip is provided at the top end of the rotating plate, and one end of the push post passes through the spiral groove and is horizontally slidably connected to the convex strip.

[0016] Preferably, the driving member includes a mounting plate arranged on one side of the top end of the rotating plate, the mounting plate is located on one side of the movable plate, and the mounting plate is arranged along the length direction of the rotating plate, and the side of the mounting plate close to the movable plate is provided with two long strip grooves along the length direction of the mounting plate, and the two long strip grooves are distributed up and down, and the side of the mounting plate close to the movable plate is provided with a connecting groove and a communicating groove, the connecting groove is arranged obliquely and is communicated with the two long strip grooves, and the communicating groove is arranged vertically and is communicated with the two long strip grooves, at this time, the two long strip grooves, the connecting groove and the communicating groove form a rectangle, The bottoms of the connecting groove and the communicating groove are flush with the bottoms of the two long strip grooves. The bottom of the connecting groove is provided with a guide plate, and the side of the guide plate facing away from the bottom of the connecting groove is an inclined surface. The top of the guide plate is flush with the bottom groove wall of the upper long strip groove. An L-shaped connecting rod is provided on the side of the vertical rod close to the mounting plate, and a telescopic column located in the upper long strip groove is horizontally provided on the end of the connecting rod away from the vertical rod. The outer wall of the telescopic column is in contact with the upper and lower groove walls of the long strip groove, and a second ball is provided on the side of the telescopic column close to the bottom of the long strip groove.

[0017] Preferably, the telescopic column includes a mounting column and a sliding column, the mounting column is fixedly connected to the connecting rod, an end of the mounting column away from the connecting rod is provided with a mounting groove, one end of the sliding column is located in the mounting groove and is horizontally slidably connected to the mounting groove, the outer wall of the mounting column is in contact with the upper and lower groove walls of the long strip groove, a compression spring is provided between the sliding column and the groove bottom of the mounting groove, and the second ball is provided on the side of the sliding column away from the compression spring.

[0018] Preferably, a boss located on one side of the vertical rod is provided at the top of the movable plate, and a plurality of sliding plates are vertically slidably connected to one side of the boss close to the connecting rod, and each sliding plate is fixedly connected to one side of the connecting rod.

[0019] Preferably, the slot is in the shape of an elongated strip, a plurality of ventilation holes are provided on one side of the placement plate, and each of the ventilation holes is located on one side of the slot and is arranged at intervals in a direction away from the slot.

[0020] Preferably, a placement area is provided on the rotating plate, and the placement area is located on the side of the movable plate away from the insertion rod. A plurality of heat dissipation grooves are provided on the top of the rotating plate. When the placement plate in the vacuum drying box body is transferred to the rotating plate through the transfer member, the placement plate is located on each heat dissipation groove.

[0021] Another object of the present invention is to provide a method for using the above-mentioned preparation device of a polymer fluid loss reducer for drilling fluid, wherein the drying chamber is evacuated by turning on the vacuum pump, and then an inert gas is filled into the interior of the drying chamber through the air guide hole, and the heater is started to heat the drying chamber to dry the crude reaction product on the placement plate. When the crude reaction product is dried, the box door is opened, and then the servo motor is turned on. The rotating shaft of the servo motor drives the rotating plate to rotate until the transfer member on the rotating plate is aligned with the placement plate in the vacuum drying box body, and then the placement plate in the vacuum drying box body is transferred to the rotating plate through the transfer member, and then the servo motor works again until the placement plate is turned away from the vacuum drying box body, at which time the placement plate can be automatically removed from the vacuum drying box.

[0022] The beneficial effects of the present invention are as follows: the drying chamber is evacuated to a vacuum by turning on the vacuum pump, and then the inert gas is filled into the interior of the drying chamber through the air guide hole, and the heater is started, the heater heats the drying chamber, and the crude reaction product on the placement plate is dried. When the crude reaction product is completely dried, the box door is opened, and then the servo motor is turned on. The rotating shaft of the servo motor drives the rotating plate to rotate until the transfer piece on the rotating plate is aligned with the placement plate in the vacuum drying box body, and then the placement plate in the vacuum drying box body is transferred to the rotating plate through the transfer piece, and then the servo motor works again until the placement plate is turned away from the vacuum drying box body. At this time, the placement plate can be automatically moved out of the vacuum drying box, thereby reducing the occurrence of scalding of the staff by the placement plate. The use is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of this embodiment;

[0025] Figure 2 This is a schematic diagram of the structure of the fixing plate of this embodiment;

[0026] Figure 3 This is a schematic diagram of the structure of the convex strips in this embodiment;

[0027] Figure 4 This is a schematic diagram of the structure of the spiral groove in this embodiment;

[0028] Figure 5 This is a schematic diagram of the structure of the connecting rod in this embodiment;

[0029] Figure 6 This is a schematic diagram of the structure of the boss in this embodiment;

[0030] Figure 7 for Figure 2 A schematic diagram of the structure of the middle A part;

[0031] Figure 8 for Figure 2 Schematic diagram of the enlarged structure of part B in the middle.

[0032] Description of reference numerals:

[0033] In the figure: 1. vacuum drying box body; 2. box door; 3. drying chamber; 4. air guide hole; 5. vacuum pump; 6. heater; 7. placement plate; 8. fixed plate; 9. rotating plate; 10. servo motor; 12. moving plate; 13. embedded groove; 14. vertical rod; 15. horizontal rod; 16. plug rod; 17. slot; 18. mounting frame; 19. rotating shaft; 20. driving motor; 21. spiral groove; 22. push column; 24. convex strip; 25. mounting plate; 26. long strip groove; 27. connecting groove; 28. connecting groove; 29. ​​guide plate; 30. connecting rod; 31. telescopic column; 32. second ball; 33. mounting column; 34. sliding column; 35. mounting groove; 36. compression spring; 37. boss; 38. sliding plate; 39. air vent; 40. placement area; 41. heat dissipation groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0035] A preparation device for a polymer fluid loss reducer for drilling fluid comprises a vacuum drying oven body 1, a door 2 is rotatably connected to one side of the vacuum drying oven body 1, a drying chamber 3 is provided inside the vacuum drying oven body 1, a gas guide hole 4 for injecting an inert gas is provided on the vacuum drying oven body 1, a vacuum pump 5 is provided on one side of the vacuum drying oven body 1, the vacuum pump 5 is used to evacuate the drying chamber 3, and a heater 6 is provided inside the vacuum drying oven body 1. Figure 1A placement plate 7 for placing the crude reaction product is placed at the bottom of the interior of the vacuum drying oven body 1. A fixed plate 8 is provided at the lower side of the vacuum drying oven body 1 close to the oven door 2, and a rotating plate 9 is rotatably connected to the fixed plate 8. When the oven door 2 is opened, a transfer member for transferring the placement plate 7 in the vacuum drying oven body 1 to the rotating plate 9 is provided on the rotating plate 9, and a servo motor 10 for driving the rotating plate 9 to rotate is provided on the fixed plate 8.

[0036] like Figure 1 and Figure 2 , the drying chamber 3 is evacuated by turning on the vacuum pump 5, and then the inert gas is filled into the interior of the drying chamber 3 through the air guide hole 4, and the heater 6 is started. The heater 6 heats the drying chamber 3 and dries the crude reaction product on the placement plate 7. When the crude reaction product is dried, the box door 2 is opened, and then the servo motor 10 is turned on. The rotating shaft of the servo motor 10 drives the rotating plate 9 to rotate until the transfer piece on the rotating plate 9 is aligned with the placement plate 7 in the vacuum drying box body 1, and then the placement plate 7 in the vacuum drying box body 1 is transferred to the rotating plate 9 through the transfer piece, and then the servo motor 10 works again until the placement plate 7 is turned away from the vacuum drying box body 1. At this time, the placement plate 7 can be automatically removed from the vacuum drying box, thereby reducing the occurrence of scalding of the staff by the placement plate 7. It is simple and convenient to use.

[0037] like Figure 2 and Figure 3 and Figure 4 The transfer member includes a movable plate 12 connected to the rotating plate 9 for horizontal sliding along the length direction of the rotating plate 9 and an embedding groove 13 arranged at the top of the movable plate 12. A vertical rod 14 is vertically slidably connected in the embedding groove 13. The top of the vertical rod 14 extends to the outside of the embedding groove 13 and is horizontally provided with a horizontal rod 15. The end of the horizontal rod 15 away from the vertical rod 14 is vertically provided with an insertion rod 16 downward. A slot 17 is provided at the top of the placement plate 7. A movable member for pushing the movable plate 12 to slide back and forth horizontally is provided on the rotating plate 9. When the movable member pushes the movable plate 12 to move horizontally so that one side of the movable plate 12 contacts the placement plate 7 in the vacuum drying box body 1, a driving member for driving the vertical rod 14 to move vertically downward is provided on the rotating plate 9. At this time, the insertion rod 16 is vertically inserted into the slot 17.

[0038] like Figure 2 and Figure 3 and Figure 4When the servo motor 10 is turned on and the rotating shaft of the servo motor 10 drives the rotating plate 9 to rotate, the rotating plate 9 drives the moving plate 12, the driving member, the vertical rod 14, the horizontal rod 15, the plugging rod 16, and the moving member to rotate along the rotating axis of the rotating plate 9 until the plugging rod 16 is rotated to between the moving plate 12 and the vacuum drying box body 1, and then the moving member pushes the moving plate 12 to drive the vertical rod 14, the horizontal rod 15, and the plugging rod 16 to move in the direction close to the vacuum drying box body 1 until one side of the moving plate 12 contacts the placement plate 7 in the vacuum drying box body 1. The vertical rod 14, the horizontal rod 15 and the insertion rod 16 are moved vertically downward by the driving member until the bottom end of the insertion rod 16 is vertically inserted into the slot 17. Then, the moving member pushes the moving plate 12 to move away from the vacuum drying box body 1. At this time, the placement plate 7 in the vacuum drying box body 1 will move horizontally with the moving plate 12 through the cooperation of the slot 17 and the insertion rod 16 until the placement plate 7 in the vacuum drying box body 1 is moved onto the rotating plate 9.

[0039] After the placement plate 7 in the vacuum drying oven body 1 is moved onto the rotating plate 9, the next placement plate 7 on which the crude reaction product to be dried is placed can be placed on the rotating plate 9. At this time, the two placement plates 7 are opposite to each other and are respectively located on both sides of the moving plate 12. Then the servo motor 10 works again to rotate the rotating plate 9 180 degrees so that the placement plate 7 on which the crude reaction product to be dried is aligned with the vacuum drying oven body 1. Then the moving plate 12 is pushed by the moving part to move toward the vacuum drying oven body 1, and the placement plate 7 on which the crude reaction product to be dried is pushed into the vacuum drying oven body 1. Then the servo motor 10 works again to rotate the rotating plate 9 90 degrees, and then the box door 2 is closed. The placement plate 7 is convenient to take out and put in, and is simple to use.

[0040] like Figure 3 The movable member includes a mounting frame 18 vertically on the top of the rotating plate 9, the mounting frame 18 is located on one side of the movable plate 12, and an internal hollow rotating shaft 19 is rotatably connected on the mounting frame 18, and the rotating shaft 19 is horizontally arranged. A push column 22 is horizontally arranged at one end of the movable plate 12 close to the rotating shaft 19, and two spiral grooves 21 connected to the rotating shaft are wound on the rotating shaft 19 along the length direction of the rotating shaft 19, and the end of the push column 22 away from the movable plate 12 passes through the two spiral grooves 21, and a driving motor 20 for driving the rotating shaft to rotate is provided on the mounting frame 18. A convex strip 24 is provided at the top of the rotating plate 9, and one end of the push column 22 passing through the spiral groove 21 is horizontally slidably connected with the convex strip 24. The purpose of this arrangement is to turn on the driving motor 20, and at this time, the rotating shaft of the driving motor 20 will drive the rotating shaft 19 to rotate. At this time, the two spiral grooves 21 on the rotating shaft 19 cooperate with the push column 22 to push the movable plate 12 to move back and forth horizontally on the rotating plate 9, and the push column 22 slides on the convex strip 24, which is simple and convenient to use.

[0041] like Figure 3 and Figure 6 and Figure 8 The driving member includes a mounting plate 25 arranged on one side of the top of the rotating plate 9, the mounting plate 25 is located on one side of the movable plate 12, and the mounting plate 25 is arranged along the length direction of the rotating plate 9, and two long strip grooves 26 are arranged on the side of the mounting plate 25 close to the movable plate 12 along the length direction of the mounting plate 25, and the two long strip grooves 26 are distributed up and down, and the side of the mounting plate 25 close to the movable plate 12 is provided with a connecting groove 27 and a connecting groove 28, the connecting groove 27 is arranged obliquely and is connected to the two long strip grooves 26, and the connecting groove 28 is arranged vertically and is connected to the two long strip grooves 26, at this time, the two long strip grooves 26, the connecting groove 27 and the connecting groove 28 form a rectangle, The bottoms of the connecting groove 27 and the communicating groove 28 are flush with the bottoms of the two long strip grooves 26. A guide plate 29 is provided at the bottom of the connecting groove 27, and the side of the guide plate 29 facing away from the bottom of the connecting groove 27 is an inclined surface. The top of the guide plate 29 is flush with the bottom end groove wall of the upper long strip groove 26. An L-shaped connecting rod 30 is provided on the side of the vertical rod 14 close to the mounting plate 25, and a telescopic column 31 located in the upper long strip groove 26 is horizontally provided at the end of the connecting rod 30 away from the vertical rod 14. The outer wall of the telescopic column 31 is in contact with the upper and lower groove walls of the long strip groove 26, and a second ball 32 is provided on the side of the telescopic column 31 close to the bottom of the long strip groove 26.

[0042] like Figure 2 and Figure 3 and Figure 6 and Figure 8 The initial position of the telescopic column 31 is located in the middle of the upper long strip groove 26. When the insertion rod 16 rotates to between the moving plate 12 and the vacuum drying box body 1, and the moving part pushes the moving plate 12 to drive the vertical rod 14, the horizontal rod 15, and the insertion rod 16 to move toward the vacuum drying box body 1, the connecting rod 30 and the telescopic column 31 will move with the vertical rod 14. At this time, the telescopic column 31 slides horizontally in the upper long strip groove 26. When one side of the moving plate 12 contacts the placement plate 7 in the vacuum drying box body 1, The telescopic column 31 will be located at the connection point between the long strip groove 26 and the connecting groove 28. At this time, under the influence of gravity, the telescopic column 31, the connecting rod 30, the vertical rod 14, the horizontal rod 15, and the insertion rod 16 will move vertically downward, so that the insertion rod 16 is vertically inserted into the slot 17. When the insertion rod 16 is vertically inserted into the slot 17, the telescopic column 31 will be located in the long strip groove 26 below, and then the moving part pushes the moving plate 12 to move away from the vacuum drying box body 1. At this time, the telescopic column 31 will slide in the long strip groove 26 below;

[0043] When the placement plate 7 in the vacuum drying box body 1 is moved onto the rotating plate 9, the rotating plate 9 is rotated 180 degrees, and then the moving plate 12 is pushed by the moving member to move in the direction close to the vacuum drying box body 1, and the placement plate 7 on which the crude reaction product to be dried is placed is pushed into the vacuum drying box body 1, the telescopic column 31 will move horizontally to the connection between the elongated groove 26 below and the connecting groove 27, and the telescopic column 31 can be moved upward by the cooperation of the inclined connecting groove 27 and the telescopic column 31, so that the telescopic column 31 re-enters the elongated groove 26 above, and the plug column is separated from the slot 17, and then the moving member pushes the moving plate 12 to move in the direction away from the vacuum drying box body 1, and the telescopic column 31 is moved to the initial position;

[0044] When the telescopic column 31 passes through the connecting groove 27, the second ball 32 on the telescopic column 31 of the guide plate 29 will contact the inclined surface on the guide plate 29. At this time, the telescopic column 31 can be retracted by the inclined surface of the guide plate 29. After the telescopic column 31 enters the upper elongated groove 26, the second ball 32 separates from the inclined surface of the guide plate 29. At this time, the telescopic column 31 extends, so that the second ball 32 contacts the bottom of the upper elongated groove 26. At this time, the guide plate 29 can prevent the telescopic column 31 entering the upper elongated groove 26 from passing through the connecting groove 27 to enter the lower elongated groove 26. It is simple and convenient to use.

[0045] like Figure 6 The telescopic column 31 includes a mounting column 33 and a sliding column 34. The mounting column 33 is fixedly connected to the connecting rod 30. The end of the mounting column 33 away from the connecting rod 30 is provided with a mounting groove 35. One end of the sliding column 34 is located in the mounting groove 35 and is horizontally slidably connected to the mounting groove 35. The outer wall of the mounting column 33 contacts the upper and lower groove walls of the long strip groove 26. A compression spring 36 is provided between the sliding column 34 and the groove bottom of the mounting groove 35. The second ball 32 is provided on the side of the sliding column 34 away from the compression spring 36. The purpose of this arrangement is When the telescopic column 31 passes through the connecting groove 27, the second ball 32 will push the sliding column 34 into the mounting groove 35 through the inclined surface of the guide plate 29. At this time, the compression spring 36 is in a compressed state. When the second ball 32 separates from the inclined surface of the guide plate 29, the compressed compression spring 36 will push the sliding column 34 to drive the second ball 32 to approach the bottom of the long groove 26 until the second ball 32 contacts the bottom of the long groove 26. At this time, the compression spring 36 is in a natural state, which is simple and convenient to use.

[0046] like Figure 6 and Figure 7The top of the movable plate 12 is provided with a boss 37 located on one side of the vertical rod 14. The boss 37 is vertically slidably connected to a plurality of sliding plates 38 on one side close to the connecting rod 30, and each sliding plate 38 is fixedly connected to one side of the connecting rod 30. The purpose of this arrangement is that when the connecting rod 30 moves vertically, each sliding plate 38 will move with the connecting rod 30. At this time, each sliding plate 38 is used for the cooperation between the boss 37 and the connecting rod 30, so that the bending of the connecting rod 30 can be reduced, and it is simple and convenient to use.

[0047] like Figure 2 The slot 17 is in the shape of a long strip, and a plurality of air holes 39 are provided on one side of the placement plate 7, and each of the air holes 39 is located on one side of the slot 17 and is arranged at intervals in a direction away from the slot 17. The purpose of this arrangement is that when the placement plate 7 is located on the rotating plate 9, the placement plate 7 can be easily cooled through the air holes 39 on the placement plate 7, which is simple and convenient to use.

[0048] like Figure 3 A placement area 40 is provided on the rotating plate 9, and the placement area 40 is located on the side of the moving plate 12 away from the insertion rod 16. A plurality of heat dissipation grooves 41 are provided on the top of the rotating plate 9. When the placement plate 7 in the vacuum drying oven body 1 is transferred to the rotating plate 9 by the transfer member, the placement plate 7 is located on each heat dissipation groove 41. The purpose of this arrangement is to further dissipate the heat of the placement plate 7 transferred from the vacuum drying oven body 1 to the rotating plate 9 through each heat dissipation hole. After the placement plate 7 in the vacuum drying oven body 1 is moved to the rotating plate 9, the next placement plate 7 for placing the crude reaction product to be dried is placed in the placement area 40. At this time, the placement area 40 can be used to identify the placement area of ​​the placement plate 7 on the rotating plate 9 for placing the crude reaction product to be dried, which is simple and convenient to use. Example 2

[0049] A method for using a polymer fluid loss reducer for drilling fluid includes the above-mentioned embodiment 1, wherein a drying chamber 3 is evacuated by turning on a vacuum pump 5, and then an inert gas is filled into the interior of the drying chamber 3 through an air guide hole 4, and a heater 6 is started, and the heater 6 heats the drying chamber 3 to dry a crude reaction product on a placement plate 7. When the crude reaction product is dried, the chamber door 2 is opened, and then a servo motor 10 is turned on, and the rotating shaft of the servo motor 10 drives a rotating plate 9 to rotate until a transfer member on the rotating plate 9 is aligned with the placement plate 7 in a vacuum drying box body 1, and then the placement plate 7 in the vacuum drying box body 1 is transferred to the rotating plate 9 by the transfer member, and then the servo motor 10 works again until the placement plate 7 is rotated away from the vacuum drying box body 1, and at this time, the placement plate 7 can be automatically removed from the vacuum drying box.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A preparation device for a polymer fluid loss reducer for drilling fluid, comprising a vacuum drying oven body (1), one side of the vacuum drying oven body (1) being rotatably connected to a door (2), the interior of the vacuum drying oven body (1) being a drying chamber (3), the vacuum drying oven body (1) being provided with a gas guide hole (4) for injecting an inert gas, one side of the vacuum drying oven body (1) being provided with a vacuum pump (5), the vacuum pump (5) being used for evacuating the drying chamber (3), the interior of the vacuum drying oven body (1) being provided with a heater (6), characterized in that: A placement plate (7) for placing a crude reaction product is placed at the bottom of the vacuum drying oven body (1); a fixed plate (8) is provided below a side of the vacuum drying oven body (1) close to the oven door (2); and a rotating plate (9) is rotatably connected to the fixed plate (8); when the oven door (2) is opened, a transfer member for transferring the placement plate (7) in the vacuum drying oven body (1) to the rotating plate (9) is provided on the rotating plate (9); and a servo motor (10) for driving the rotating plate (9) to rotate is provided on the fixed plate (8); The transfer member comprises a movable plate (12) connected to the rotating plate (9) in a horizontal sliding manner along the length direction of the rotating plate (9) and an embedding groove (13) arranged at the top of the movable plate (12); a vertical rod (14) is vertically slidably connected in the embedding groove (13); the top of the vertical rod (14) extends outside the embedding groove (13) and is horizontally provided with a horizontal rod (15); an end of the horizontal rod (15) away from the vertical rod (14) is vertically provided with an insertion rod (16) downward; a slot (17) is provided at the top of the placement plate (7); a movable member for pushing the movable plate (12) to slide back and forth horizontally is provided on the rotating plate (9); when the movable member pushes the movable plate (12) to move horizontally so that one side of the movable plate (12) contacts the placement plate (7) in the vacuum drying box body (1), a driving member for driving the vertical rod (14) to move vertically downward is provided on the rotating plate (9); at this time, the insertion rod (16) is vertically inserted into the slot (17); A plurality of ventilation holes (39) are provided on one side of the placement plate (7); A placement area (40) is provided on the rotating plate (9), and the placement area (40) is located on a side of the movable plate (12) away from the insertion rod (16), and a plurality of heat dissipation grooves (41) are provided on the top of the rotating plate (9).

2. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 1, characterized in that: The moving member comprises a mounting frame (18) vertically disposed on the top of the rotating plate (9), the mounting frame (18) being located on one side of the moving plate (12), the mounting frame (18) being rotatably connected to an internally hollow rotating shaft (19), and the rotating shaft (19) being arranged horizontally, a push column (22) being arranged horizontally at one end of the moving plate (12) close to the rotating shaft (19), two spiral grooves (21) being wound around the rotating shaft (19) along the length direction of the rotating shaft (19) and being connected to the rotating shaft (19), the push column (22) passing through the two spiral grooves (21) at one end away from the moving plate (12), and a driving motor (20) for driving the rotating shaft (19) to rotate is arranged on the mounting frame (18).

3. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 2, characterized in that: A convex strip (24) is provided at the top end of the rotating plate (9), and one end of the push column (22) passes through the spiral groove (21) and is horizontally slidably connected to the convex strip (24).

4. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 1, characterized in that: The driving member comprises a mounting plate (25) arranged on one side of the top end of the rotating plate (9), the mounting plate (25) being located on one side of the movable plate (12), and being arranged along the length direction of the rotating plate (9), and being provided with two long strip grooves (26) along the length direction of the mounting plate (25) on one side of the mounting plate (25) close to the movable plate (12), and the two long strip grooves (26) being distributed up and down, and being provided with a connecting groove (27) and a communicating groove (28) on one side of the mounting plate (25) close to the movable plate (12), the connecting groove (27) being arranged obliquely and being communicated with the two long strip grooves (26), and the communicating groove (28) being arranged vertically and being communicated with the two long strip grooves (26), and at this time, the two long strip grooves (26), the connecting groove (27) and the communicating groove (28) forming a rectangle, The bottoms of the connecting groove (27) and the communicating groove (28) are flush with the bottoms of the two long strip grooves (26); the bottom of the connecting groove (27) is provided with a guide plate (29); and the side surface of the guide plate (29) facing away from the bottom of the connecting groove (27) is an inclined surface; the top of the guide plate (29) is flush with the bottom wall of the upper long strip groove (26); an L-shaped connecting rod (30) is provided on the side of the vertical rod (14) close to the mounting plate (25); and a telescopic column (31) located in the upper long strip groove (26) is horizontally provided on the end of the connecting rod (30) away from the vertical rod (14); the outer wall of the telescopic column (31) contacts the upper and lower groove walls of the long strip groove (26); and a second ball bearing (32) is provided on the side of the telescopic column (31) close to the bottom of the long strip groove (26).

5. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 4, characterized in that: The telescopic column (31) comprises a mounting column (33) and a sliding column (34); the mounting column (33) is fixedly connected to the connecting rod (30); an end of the mounting column (33) away from the connecting rod (30) is provided with a mounting groove (35); one end of the sliding column (34) is located in the mounting groove (35) and is horizontally slidably connected to the mounting groove (35); an outer wall of the mounting column (33) contacts upper and lower groove walls of the long strip groove (26); a compression spring (36) is provided between the sliding column (34) and the groove bottom of the mounting groove (35); and the second ball (32) is provided on a side of the sliding column (34) away from the compression spring (36).

6. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 4, characterized in that: A boss (37) located on one side of the vertical rod (14) is provided at the top end of the movable plate (12); a side of the boss (37) close to the connecting rod (30) is vertically slidably connected to a plurality of sliding plates (38); and each sliding plate (38) is fixedly connected to one side of the connecting rod (30).

7. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 1, characterized in that: The slot (17) is in the shape of an elongated strip, and each of the air holes (39) is located on one side of the slot (17) and is arranged at intervals in a direction away from the slot (17).

8. The preparation device of a polymer fluid loss reducer for drilling fluid according to claim 1, characterized in that: When the placement plate (7) in the vacuum drying box body (1) is transferred to the rotating plate (9) by the transfer member, the placement plate (7) is located on each heat dissipation slot (41).

9. A method for using the device for preparing a polymer fluid loss reducer for drilling fluid according to any one of claims 1 to 8, characterized in that: The drying chamber (3) is evacuated by turning on the vacuum pump (5), and then the inert gas is filled into the interior of the drying chamber (3) through the air guide hole (4). The heater (6) is started, and the heater (6) heats the drying chamber (3) to dry the crude reaction product on the placement plate (7). When the crude reaction product is completely dried, the box door (2) is opened, and then the servo motor (10) is turned on. The rotating shaft of the servo motor (10) drives the rotating plate (9) to rotate until the transfer member on the rotating plate (9) is aligned with the placement plate (7) in the vacuum drying box body (1). Then, the placement plate (7) in the vacuum drying box body (1) is transferred to the rotating plate (9) through the transfer member. Then, the servo motor (10) works again until the placement plate (7) is rotated away from the vacuum drying box body (1). At this time, the placement plate (7) can be automatically removed from the vacuum drying box.

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