Preparation device and preparation method of 3T film pasting agent for drilling fluid

Abstract

The invention relates to the technical field of film pasting agent preparation, and discloses a 3T film pasting agent preparation device for drilling fluid and a preparation method.The 3T film pasting agent preparation device comprises a drying box, a flow injection pipe is arranged on the upper portion of the drying box, an inner cylinder is arranged in the drying box, an atomization nozzle is arranged at the end, stretching into the inner cylinder, of the flow injection pipe, and a grinding assembly is arranged on the lower portion of the inner cylinder; a vibration assembly is arranged outside the grinding assembly, the upper portion of the base is rotationally connected with a hollow cylinder, shaft rods are distributed on the periphery of the hollow cylinder in an annular array mode, and grinding wheels are distributed on the outer surfaces of the shaft rods in a linear array mode in the vertical axis direction of the shaft rods. The rolling wheel on the outer surface of the shaft rod is used for rolling the granular 3T film pasting agent in the sliding process in the groove, and meanwhile, the shaft rod is matched with rotation, so that the rolling effect of the rolling wheel on the 3T film pasting agent is improved, the granular 3T film pasting agent is eliminated, it is guaranteed that the 3T film pasting agent becomes powder to be stored, and the situation that the interior of the 3T film pasting agent is not thoroughly dried due to the granular state is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film coating agent preparation, and particularly relates to a 3T film coating agent preparation device for drilling fluid and a preparation method. BACKGROUND

[0002] Drilling fluid is a fluid used in the drilling process, also known as drilling mud, which has the core functions of carrying cuttings, cooling and lubricating the drill bit, balancing the formation pressure, and protecting the wellbore stability, etc. The 3T film coating agent is a new wellbore stabilizer for drilling fluid, which uses the adsorption of high molecular materials and clay minerals to plug the microcracks in the formation, reduce the filtration loss of drilling fluid, and inhibit the hydration and swelling of shale. The 3T film coating agent preparation device is a complete set of equipment integrating raw material proportioning, reaction synthesis, and grinding dispersion. The drying machine is an indispensable part of the preparation device, which completes the conversion from slurry to powder.

[0003] In the prior art, the 3T film coating agent is dried by spray drying. The 3T film coating agent is transported from the storage device to the drying box, sprayed out through the atomizing nozzle, and at the same time, a heater is arranged beside the drying box to synchronously transport hot air into the drying box to dry the 3T film coating agent. However, after the 3T film coating agent is atomized and sprayed out, it will fall to the bottom. During the falling process, the atomized 3T film coating agent will gradually dry. During this process, the atomized 3T film coating agent will collide and adhere due to flow, causing part of the falling 3T film coating agent to be in the form of small particles. This will not only cause incomplete internal drying, but also cause the collected 3T film coating agent to be prone to moisture and mildew. SUMMARY

[0004] The technical problem to be solved by the present application is that in the prior art, the 3T film coating agent is subjected to spray drying, and the atomized droplets fall and collide and adhere to form small particles, causing incomplete internal drying and moisture and mildew after collection. To solve the above problems, the present application provides a 3T film coating agent preparation device for drilling fluid and a preparation method.

[0005] To achieve the above purpose, the present application adopts the following technical scheme: a 3T film coating agent preparation device for drilling fluid, comprising a drying box, wherein the upper part of the drying box is provided with an injection pipe, the inside of the drying box is provided with an inner cylinder, and the end of the injection pipe extending into the inner cylinder is provided with an atomizing nozzle; The lower part of the inner cylinder is provided with a grinding assembly, the outside of the grinding assembly is provided with a vibration assembly, the upper part of the inner cylinder is provided with a pushing assembly, and the outside of the pushing assembly is provided with a crushing assembly. The grinding assembly comprises a base fixedly connected to the inner wall of the bottom of the inner cylinder, the upper portion of the base is rotationally connected with a hollow cylinder, the periphery of the hollow cylinder is arranged with a plurality of shaft rods in an annular array, and the outer surface of the shaft rod is linearly arranged with a plurality of rolling wheels along the vertical axis direction of the shaft rod.

[0006] Preferably, the upper surface of the base is provided with a motor in the middle portion, the driving end of the motor is fixedly connected with the middle portion of the hollow cylinder, the cross section of the hollow cylinder is designed as an H-shaped type, the shaft rod is rotationally connected to the outer surface of the hollow cylinder, the lower portion of the inner cylinder is provided with a groove in the inner wall, and the rolling wheel is slidingly connected in the corresponding groove.

[0007] Preferably, the outer surface of the base is fixedly provided with a tooth ring, the outer surface of the shaft rod is fixedly provided with a gear, and the gear is meshingly connected with the tooth ring.

[0008] Preferably, the vibration assembly comprises a spiral fin fixedly connected to the outer surface of the shaft rod, the bottom of the inner cylinder is provided with a flow guide groove, and the flow guide groove extends and converges to the outlet of the bottom of the inner cylinder.

[0009] Preferably, the lower surface of the tooth ring is rotationally connected with a vertical rod, the outer surface of the vertical rod is fixedly connected with a metal plate, the outer surface of the vertical rod is fixedly provided with a torsion spring, and the end of the torsion spring away from the vertical rod is fixedly connected to the side of the base.

[0010] Preferably, the outer surface of the base is fixedly connected with a vibration plate at the corresponding position of the vertical rod, and the front end of the vibration plate is provided with a V-shaped opening.

[0011] Preferably, the pushing assembly comprises a center rod fixedly connected to the upper surface of the hollow cylinder, the outer surface of the center rod is arranged with a plurality of hollow frames in an annular array, the side of the hollow frame away from the center rod is designed as an inclined edge and has the same inclination scale as the inner wall of the inner cylinder, the outer surface of the hollow frame is fixedly connected with a scraper, and the scraper is attached to the inner wall of the inner cylinder and is designed to be inclined.

[0012] Preferably, the breaking assembly comprises a round rod movably inserted into the middle portion of the hollow frame, the end of the round rod protruding out of the hollow frame is fixedly connected with a blade, the outer surface of the round rod placed in the hollow frame is fixedly connected with a cutting piece, and the cutting pieces are arranged in a staggered manner.

[0013] Preferably, the outer surface of the drying box is provided with a heater, the ventilation pipeline of the heater is connected with the inner cylinder, the outer surface of the drying box is provided with a separator, the inlet pipe of the separator is connected to the bottom of the inner cylinder, and the waste pipe of the separator is connected to the interface of the air blower.

[0014] A preparation method of a 3T film pasting agent, using the 3T film pasting agent preparation device for drilling fluid, the preparation method is as follows: S1. Raw material ratio: The raw material ratio is completed according to the formula. The basic film-forming resin, functional additives, solvents and auxiliaries are first metered and resin impurities are removed. The additives are graded according to particle size. The solvent is stored at a constant temperature. The raw materials are transported to the premix tank and initially mixed by the stirring device to form a uniform suspension, which is ready for subsequent reaction synthesis. S2. Reaction Synthesis: The proportioned suspension enters the reactor, the heating system is turned on to control the temperature, and the stirring is started at the same time to ensure that the raw materials are in full contact. The concentration of volatiles is monitored during the reaction, and the condensation recovery system is turned on to reflux the solvent in a timely manner. After the reaction reaches the target, the heating is turned off and the temperature is lowered to obtain a liquid semi-finished product, which is stored in an insulated storage tank. S3, Atomization Drying: Liquid film agent enters the drying chamber and is atomized into small droplets. Hot air is simultaneously introduced, the motor is started to drive the relevant components to rotate, the cutting blade cuts large particles to promote drying, the centrifugal vortex makes the film agent move towards the inner wall to improve the drying effect, the scraper scrapes and guides the film agent to the lower part, the exhaust gas is discharged, and the finished product is temporarily stored in the separator. S4. Finished Product Processing: The dried film agent enters the lower part of the inner cylinder and is crushed by the groove and the crushing wheel. The motor drives the shaft to rotate around the center and rotate in the opposite direction at the same time, which efficiently crushes it into powder. The spiral blade pushes the powder to converge and drives the components to collide and generate vibration to prevent blockage. After the powder is screened to remove impurities, it enters the storage device, is sterilized, and then sealed for storage.

[0015] The technical effects and advantages of this invention are as follows: In this invention, the granular 3T film agent is crushed by the rolling wheel on the outer surface of the shaft sliding in the groove. At the same time, the rotation of the shaft improves the crushing effect of the rolling wheel on the 3T film agent, eliminates the granular state of the 3T film agent, and ensures that the 3T film agent is stored as powder, avoiding the situation where the internal drying of the granular state is incomplete. In this invention, the rotating spiral blades are driven by the movement of the shaft to push and center the 3T powder film agent, while triggering the metal plate and the vibrating plate. The vibration is transmitted to make the 3T powder film agent flow downward, thereby improving the discharge efficiency of the 3T film agent. In this invention, motion transmission is achieved through a central rod, and a cutting blade is used to cut the larger 3T film-forming agent particles, generating a centrifugal vortex that drives the 3T film-forming agent closer to the inner wall of the inner cylinder, improving the drying effect. The scraper facilitates the collection of the dried 3T film-forming agent. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the device of the present invention; Figure 3 This is a schematic diagram of the internal structure of the inner cylinder of the present invention; Figure 4 This is a schematic diagram of the grinding assembly structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the image; Figure 6 This is a schematic diagram of the cooperative structure of the pushing component and the crushing component of the present invention; Figure 7 This is a schematic diagram of the push component structure of the present invention; Figure 8 This is a schematic diagram of the crushing component structure of the present invention.

[0017] Legend: 11. Drying oven; 12. Injection pipe; 13. Heater; 14. Separator; 15. Atomizing nozzle; 16. Inner cylinder; 2. Grinding assembly; 21. Base; 22. Motor; 23. Hollow cylinder; 24. Shaft; 25. Roller wheel; 26. Groove; 27. Gear ring; 28. Gear; 3. Vibration assembly; 31. Spiral blade; 32. Vertical rod; 33. Metal plate; 34. Torsion spring; 35. Vibrating plate; 36. Guide channel; 4. Pushing assembly; 41. Center rod; 42. Hollow frame; 43. Scraper; 5. Crushing assembly; 51. Round rod; 52. Blade; 53. Cutting disc. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Reference Figures 1 to 8 As shown, the present invention provides a technical solution: a 3T film-forming agent preparation device and preparation method for drilling fluid, including a drying box 11, an injection pipe 12 provided at the upper part of the drying box 11, an inner cylinder 16 provided inside the drying box 11, an atomizing nozzle 15 provided at one end of the injection pipe 12 extending into the inner cylinder 16, a heater 13 provided on the outer surface of the drying box 11, a ventilation pipe of the heater 13 connected to the inner cylinder 16, a separator 14 provided on the outer surface of the drying box 11, an inlet pipe of the separator 14 connected to the bottom of the inner cylinder 16, and a waste pipe of the separator 14 connected to the interface of a blower; The lower part of the inner cylinder 16 is provided with a grinding component 2, and the outside of the grinding component 2 is provided with a vibration component 3. The upper part of the inner cylinder 16 is provided with a pushing component 4, and the outside of the pushing component 4 is provided with a crushing component 5.

[0020] Liquid 3T film agent is injected into the drying chamber 11 through the injection pipe 12. It is atomized into small droplets by the atomizing nozzle 15 and floats in the inner cylinder 16. At the same time, the heater 13 is turned on, and the hot air heated by the heater 13 is introduced into the inner cylinder 16 to dry the atomized 3T film agent. During this process, the crushing component 5 can cut large particles and generate centrifugal force to force the atomized particles closer to the inner wall. With the help of the pushing component 4, it is pushed to the grinding component 2. Then, with the assistance of the grinding and vibration component 3, it falls. The dried 3T film agent enters the separator 14 through the pipe. The exhaust gas is discharged from the fan at the top. The 3T film agent product is separated and transported to the storage device, realizing the drying of the 3T film agent.

[0021] Reference Figures 2 to 4 As shown, the grinding assembly 2 includes a base 21 fixedly connected to the inner wall of the bottom of the inner cylinder 16. A hollow cylinder 23 is rotatably connected to the upper part of the base 21. Shafts 24 are arranged in a ring around the hollow cylinder 23. Rolling wheels 25 are arranged in a straight line along the vertical axis of the shafts 24 on the outer surface of the shafts 24. A motor 22 is arranged in the middle of the upper surface of the base 21. The drive end of the motor 22 is fixedly connected to the middle of the hollow cylinder 23. The cross-section of the hollow cylinder 23 is designed as an I-shape. The shafts 24 are rotatably connected to the outer surface of the hollow cylinder 23. A groove 26 is opened in the lower part of the inner wall of the inner cylinder 16. The rolling wheels 25 are slidably engaged in the corresponding groove 26. A toothed ring 27 is fixedly sleeved on the outer surface of the base 21. A gear 28 is fixedly sleeved on the outer surface of the shafts 24. The gear 28 and the toothed ring 27 are meshed together.

[0022] The motor 22 drives the hollow cylinder 23 to rotate, which in turn drives the annularly distributed shafts 24 on its outer surface to rotate synchronously. As the shafts 24 revolve around the hollow cylinder 23, the crushing wheel 25 slides along the groove 26. After the 3T film agent falls along the channel, it is pushed into the groove 26 by the crushing wheel 25 for crushing, thereby crushing the granular 3T film agent into powder. During the revolution of the shaft 24, the gear 28 at its lower part is limited by the toothed ring 27, which in turn causes the crushing gear 28 to drive the shaft 24 to rotate in the opposite direction to the revolution. This improves the crushing effect of the crushing wheel 25 on the 3T film agent, eliminates the granular 3T film agent, and ensures that the 3T film agent is stored as powder, avoiding the situation where the internal drying is incomplete due to the granular state.

[0023] Reference Figures 3 to 5As shown, the vibration assembly 3 includes a spiral blade 31 fixedly connected to the outer surface of the shaft 24. A guide groove 36 is provided at the bottom of the inner cylinder 16. The guide groove 36 extends obliquely towards the bottom outlet of the inner cylinder 16 and converges. A vertical rod 32 is rotatably connected to the lower surface of the toothed ring 27. A metal plate 33 is fixedly connected to the outer surface of the vertical rod 32. A torsion spring 34 is fixedly sleeved on the outer surface of the vertical rod 32. The end of the torsion spring 34 away from the vertical rod 32 is fixedly connected to the side of the base 21. A vibration plate 35 is fixedly connected to the outer surface of the base 21 at the corresponding position of the vertical rod 32. A V-shaped opening is provided at the front end of the vibration plate 35.

[0024] During the rotation of shaft 24, the spiral blade 31 will rotate, thereby pushing and centering the powder 3T film agent, facilitating the entry of the 3T film agent into the guide channel 36. At the same time, the spiral blade 31 will push the metal plate 33 during rotation. The metal plate 33, after being pushed, will drive the vertical rod 32 to rotate. The rotation of the vertical rod 32 will compress the torsion spring 34. After the metal plate 33 rotates to the side away from the spiral blade 31, it will collide with the vibrating plate 35. The special structural design of the vibrating plate 35 will generate vibration after the collision. The vibration will cause the powder 3T film agent to flow downwards and enter the guide channel 36. At the same time, the vibration will also prevent the 3T film agent in the guide channel 36 from being blocked by friction, thus improving the discharge efficiency of the 3T film agent.

[0025] Reference Figure 3 , Figure 6 and Figure 7 As shown, the pushing component 4 includes a central rod 41 fixedly connected to the upper surface of the hollow cylinder 23. Hollow frames 42 are distributed in a ring array on the outer surface of the central rod 41. The side of the hollow frame 42 away from the central rod 41 is designed as an inclined side and has the same inclination scale as the inner wall of the inner cylinder 16. A scraper 43 is fixedly connected to the outer surface of the hollow frame 42. The scraper 43 is attached to the inner wall of the inner cylinder 16 and is designed to be inclined.

[0026] The motor 22 drives the hollow cylinder 23 to rotate, and the hollow cylinder 23 synchronously drives the central rod 41 on its upper part to rotate. During the rotation of the hollow frame 42, the scraper 43 will rotate, which will scrape the 3T film agent and also play a guiding role, breaking the 3T film agent and flowing it to the lower part of the inner cylinder 16, so as to facilitate the collection of the dried 3T film agent.

[0027] Reference Figure 3 , Figure 6 and Figure 8 As shown, the crushing component 5 includes a round rod 51 that is movably inserted in the middle of the hollow frame 42. One end of the round rod 51 extending out of the hollow frame 42 is fixedly connected to a blade 52. A cutting blade 53 is fixedly connected to the outer surface of the round rod 51 inside the hollow frame 42. The cutting blades 53 are arranged alternately.

[0028] The hollow frames 42 arranged in a ring on the outer surface of the central rod 41, along with the round rods 51 and cutting blades 53 inside, form an agitation structure that drives the air inside the inner cylinder 16 to flow in a ring. The blades 52 rotate under the influence of the airflow, which in turn drives the round rods 51 and cutting blades 53 to rotate. This allows for the cutting of larger 3T film-forming agents, facilitating their rapid drying. Continuous rotation creates a centrifugal vortex, which pulls the 3T film-forming agents closer to the inner wall of the inner cylinder 16, eventually adhering to it. The inner cylinder 16 is continuously heated by hot air, resulting in a stable inner wall temperature and better drying effect.

[0029] A method for preparing a 3T film-forming agent, using the aforementioned 3T film-forming agent preparation apparatus for drilling fluids, is as follows: S1. Raw material ratio: The raw material ratio is completed according to the formula. The basic film-forming resin, functional additives, solvents and auxiliaries are first metered and resin impurities are removed. The additives are graded according to particle size. The solvent is stored at a constant temperature. The raw materials are transported to the premix tank and initially mixed by the stirring device to form a uniform suspension, which is ready for subsequent reaction synthesis. S2. Reaction Synthesis: The proportioned suspension enters the reactor, the heating system is turned on to control the temperature, and the stirring is started at the same time to ensure that the raw materials are in full contact. The concentration of volatiles is monitored during the reaction, and the condensation recovery system is turned on to reflux the solvent in a timely manner. After the reaction reaches the target, the heating is turned off and the temperature is lowered to obtain a liquid semi-finished product, which is stored in an insulated storage tank. S3, Atomization Drying: Liquid film agent enters the drying chamber 11 and is atomized into small droplets. Hot air is simultaneously introduced, and the motor 22 is started to drive the relevant components to rotate. The cutting blade 53 cuts large particles to promote drying. The centrifugal vortex makes the film agent move towards the inner wall to improve the drying effect. The scraper 43 scrapes and guides the film agent to the lower part. The exhaust gas is discharged and the finished product is temporarily stored in the separator 14. S4. Finished product processing: The dried film agent enters the lower part of the inner cylinder 16 and is crushed by the groove 26 and the crushing wheel 25. The motor 22 drives the shaft 24 to rotate around the center and rotate in the opposite direction at the same time, which efficiently crushes it into powder. The spiral blade 31 pushes the powder to converge and drives the components to collide and generate vibration to prevent blockage. After the powder is screened to remove impurities, it enters the storage device, is sterilized, and then sealed for storage.

[0030] Working principle: The user connects the delivery pipe containing the 3T film agent to the injection pipe 12 to deliver the liquid 3T film agent into the drying chamber 11. After passing through the atomizing nozzle 15, it is atomized into small droplets and floats in the inner cylinder 16. At the same time, the heater 13 is turned on, and the hot air heated by the heater 13 is introduced into the inner cylinder 16 to dry the atomized 3T film agent. The dried 3T film agent will enter the separator 14 through the pipe. The exhaust gas is discharged from the fan at the top. The 3T film agent product is separated and transported to the storage device to achieve the drying of the 3T film agent. When the 3T film-applying agent is atomized and sprayed while hot air is simultaneously delivered into the inner cylinder 16, the motor 22 is started. The drive end of the motor 22 drives the hollow cylinder 23 to rotate, and the hollow cylinder 23 simultaneously drives the central rod 41 at its upper part to rotate. The hollow frames 42 distributed in a ring array on the outer surface of the central rod 41, as well as the round rods 51 and cutting blades 53 inside, form a stirring structure. As the central rod 41 rotates, it can drive the air inside the inner cylinder 16 to flow in a ring. At the same time, because there is a gap between the round rods 51 and the cutting blades 53, the rotational resistance is reduced while a flow velocity difference is formed. The blades 52 will rotate due to the air flow during rotation, which will drive the round rods 51 and the cutting blades 53 to rotate. The cutting blades 53 rotate around the central rod. 41 During the annular rotation, when encountering 3T film agent particles that have become large due to aggregation, these particles can be cut to facilitate rapid internal drying. Continuous rotation creates a centrifugal vortex, which pulls the 3T film agent closer to the inner wall of the inner cylinder 16, eventually adhering to it. The inner cylinder 16 is continuously heated by hot air, resulting in a stable inner wall temperature and better drying effect. In addition, the hollow frame 42 rotates, causing the scraper 43 to rotate. The scraper 43 not only adheres to the inner wall of the inner cylinder 16 but is also inclined. Therefore, during rotation, while scraping the 3T film agent, it also guides the flow, breaking up the 3T film agent and causing it to flow to the lower part of the inner cylinder 16 for easy collection of the dried 3T film agent. The dried 3T film agent is heated to the lower part of the inner cylinder 16. The lower inner wall of the inner cylinder 16 has multiple grooves 26. The motor 22 drives the hollow cylinder 23 to rotate, which in turn drives the annularly distributed shafts 24 on its outer surface to rotate synchronously. The outer surface of the shafts 24 is distributed with grinding wheels 25, and the grinding wheels 25 correspond to the grooves 26. As the shafts 24 revolve around the hollow cylinder 23, the grinding wheels 25 slide along the grooves 26. After the 3T film agent falls along the channel, it is pushed into the grooves 26 by the grinding wheels 25 for crushing, thus crushing the granular 3T film agent into powder. During the rotation of the shafts 24, the lower gear 28 is engaged by the gear ring 27, which in turn causes the crushing gear 28 to drive the shaft 24 to rotate in the opposite direction to the revolution. This improves the crushing effect of the grinding wheels 25 on the 3T film agent, eliminating granular 3T film agent. This ensures that the 3T film agent is stored in powder form, avoiding incomplete drying due to granular properties. Furthermore, the rotation of the shaft 24 drives the spiral blade 31 to rotate, thus pushing and centering the powdered 3T film agent, facilitating its entry into the guide channel 36. Simultaneously, the spiral blade 31 pushes the metal plate 33, which in turn drives the vertical rod 32 to rotate. The rotation of the vertical rod 32 compresses the torsion spring 34, and as the metal plate 33 rotates away from the spiral blade 31, it collides with the vibrating plate 35. The special structural design of the vibrating plate 35 generates vibration upon impact, utilizing the transmissibility of vibration to cause the powdered 3T film agent to flow downwards into the guide channel 36. Simultaneously, the vibration also prevents the 3T film agent in the guide channel 36 from becoming clogged due to friction, improving the discharge efficiency of the 3T film agent.

[0031] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A device for preparing a 3T film-forming agent for drilling fluid, characterized in that, include: A drying chamber (11) is provided with an injection pipe (12) at the top and an inner cylinder (16) inside the drying chamber (11). An atomizing nozzle (15) is provided at one end of the injection pipe (12) that extends into the inner cylinder (16). The lower part of the inner cylinder (16) is provided with a grinding component (2), the outside of the grinding component (2) is provided with a vibration component (3), the upper part of the inner cylinder (16) is provided with a pushing component (4), and the outside of the pushing component (4) is provided with a crushing component (5). The grinding assembly (2) includes a base (21) fixedly connected to the inner wall of the bottom of the inner cylinder (16). A hollow cylinder (23) is rotatably connected to the upper part of the base (21). A shaft (24) is arranged in a ring around the hollow cylinder (23). A grinding wheel (25) is arranged in a straight line along the vertical axis of the shaft (24) on the outer surface of the shaft (24).

2. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 1, characterized in that: A motor (22) is provided in the middle of the upper surface of the base (21). The driving end of the motor (22) is fixedly connected to the middle of the hollow cylinder (23). The cross-section of the hollow cylinder (23) is designed as an I-shape. The shaft (24) is rotatably connected to the outer surface of the hollow cylinder (23). The lower part of the inner cylinder (16) has a groove (26) on its inner wall. The rolling wheel (25) is slidably engaged in the corresponding groove (26).

3. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 2, characterized in that: The outer surface of the base (21) is fixedly fitted with a toothed ring (27), and the outer surface of the shaft (24) is fixedly fitted with a gear (28), which meshes with the toothed ring (27).

4. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 1, characterized in that: The vibration assembly (3) includes a spiral blade (31) fixedly connected to the outer surface of the shaft (24). The bottom of the inner cylinder (16) is provided with a guide groove (36), which extends obliquely towards the bottom outlet of the inner cylinder (16) and converges.

5. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 3, characterized in that: A vertical rod (32) is rotatably connected to the lower surface of the toothed ring (27). A metal plate (33) is fixedly connected to the outer surface of the vertical rod (32). A torsion spring (34) is fixedly sleeved on the outer surface of the vertical rod (32). One end of the torsion spring (34) away from the vertical rod (32) is fixedly connected to the side of the base (21).

6. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 4, characterized in that: A vibrating plate (35) is fixedly connected to the outer surface of the base (21) at the corresponding position of the vertical rod (32), and the front end of the vibrating plate (35) is provided with a V-shaped opening.

7. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 1, characterized in that: The pushing component (4) includes a central rod (41) fixedly connected to the upper surface of the hollow cylinder (23). Hollow frames (42) are distributed in a ring array on the outer surface of the central rod (41). The side of the hollow frame (42) away from the central rod (41) is designed as an inclined side and has the same inclination scale as the inner wall of the inner cylinder (16). A scraper (43) is fixedly connected to the outer surface of the hollow frame (42). The scraper (43) is attached to the inner wall of the inner cylinder (16) and is designed at an inclination.

8. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 7, characterized in that: The crushing component (5) includes a round rod (51) that is movably inserted in the middle of the hollow frame (42). One end of the round rod (51) extending out of the hollow frame (42) is fixedly connected to a blade (52). A cutting blade (53) is fixedly connected to the outer surface of the round rod (51) inside the hollow frame (42). The cutting blades (53) are arranged alternately.

9. The apparatus for preparing a 3T film-forming agent for drilling fluid according to claim 1, characterized in that: A heater (13) is provided on the outer surface of the drying chamber (11). The ventilation pipe of the heater (13) is connected to the inner cylinder (16). A separator (14) is provided on the outer surface of the drying chamber (11). The feed pipe of the separator (14) is connected to the bottom of the inner cylinder (16). The waste pipe of the separator (14) is connected to the interface of the blower.

10. A method for preparing a 3T film-forming agent, using the 3T film-forming agent preparation apparatus for drilling fluid as described in claim 9, wherein the preparation method is as follows: S1. Raw material ratio: The raw material ratio is completed according to the formula. The basic film-forming resin, functional additives, solvents and auxiliaries are first metered and resin impurities are removed. The additives are graded according to particle size. The solvent is stored at a constant temperature. The raw materials are transported to the premix tank and initially mixed by the stirring device to form a uniform suspension, which is ready for subsequent reaction synthesis. S2. Reaction Synthesis: The proportioned suspension enters the reactor, the heating system is turned on to control the temperature, and the stirring is started at the same time to ensure that the raw materials are in full contact. The concentration of volatiles is monitored during the reaction, and the condensation recovery system is turned on to reflux the solvent in a timely manner. After the reaction reaches the target, the heating is turned off and the temperature is lowered to obtain a liquid semi-finished product, which is stored in an insulated storage tank. S3, Atomization Drying: Liquid film agent enters the drying chamber (11) and is atomized into small droplets. Hot air is simultaneously input, and the motor (22) is started to drive the relevant components to rotate. The cutting blade (53) cuts large particles to promote drying. The centrifugal vortex makes the film agent move towards the inner wall to improve the drying effect. The scraper (43) scrapes and guides the film agent to the lower part. The exhaust gas is discharged and the finished product is temporarily stored in the separator (14). S4. Finished product processing: The dried film agent enters the lower part of the inner cylinder (16) and is crushed by the groove (26) and the crushing wheel (25). The motor (22) drives the shaft (24) to revolve around the sun and rotate in the opposite direction at the same time, which efficiently crushes it into powder. The spiral blade (31) pushes the powder to converge and drives the components to collide and generate vibration to prevent blockage. After the powder is screened to remove impurities, it enters the storage device, is sterilized and then sealed for storage.

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