Cyclic treatment device and method based on waste drilling fluid recovery
The dynamic stripping technology using twisting and flexible friction stripping components has solved the problem of separating viscoelastic solid inclusions in waste drilling fluid, achieving efficient, stable, and low-cost resource recovery.
Patent Information
- Application Number
- CN202511985576.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-03
AI Technical Summary
Existing technologies struggle to efficiently separate viscoelastic solid inclusions from waste drilling fluids. Traditional methods are prone to clogging screens or have low separation efficiency, while chemical methods are costly and introduce new chemicals.
A recycling treatment device based on waste drilling fluid recovery is adopted. It utilizes a twisting component and a flexible friction stripping component to dynamically strip viscoelastic solid phase inclusions through the differential counter-rotation and up-and-down reciprocating motion of the rollers. Liquid-solid separation is achieved in combination with the vibration of the inclined frame.
It achieves efficient peeling and separation of viscoelastic inclusions, ensuring stable equipment operation, reducing maintenance frequency and costs, and improving resource recycling efficiency.
Smart Images
Figure CN121593689A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of waste drilling fluid treatment technology, specifically relating to a recycling treatment device and method based on waste drilling fluid recovery. Background Technology
[0002] Drilling fluid (or mud) is a special liquid used in oil and gas drilling processes, mainly to support and optimize drilling operations. With the rapid development of the oil industry and the increase in drilling activities, the amount of waste drilling fluid generated has also gradually increased. This waste drilling fluid not only occupies a lot of storage space, but also poses a potential pollution risk to the environment. Therefore, it is necessary to recycle waste drilling fluid to extract water and some reusable materials, thereby reducing the demand for new resources and realizing the recycling of resources.
[0003] In waste drilling fluid, besides free drill cuttings and colloidal particles, there is another troublesome component called "viscoelastic solid inclusions." These are viscoelastic flocculent or clump-like mixtures formed by extremely fine clay particles, polymer treatment agents, and oil phases under prolonged shearing and high temperatures. They encapsulate the useful liquid phase and even finer solid phases like "glue." They are stable in nature, but traditional vibrating screens can easily bounce them off or clog the screen. Centrifuges rely on density differences for separation, but the inclusions have a density close to that of the liquid, resulting in low separation efficiency. Furthermore, high shearing can break up the inclusions, causing secondary pollution. Hydrocyclones are almost ineffective against them, and while chemical debinding is effective, it is costly and introduces new chemicals. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a recycling treatment device and method based on the recovery of waste drilling fluid.
[0005] The technical solution adopted to solve the above technical problems is: a recycling treatment device based on waste drilling fluid recovery, including a treatment frame with a hollow internal structure, and the treatment frame is open on both sides, top and bottom. At the same time, a flow guide and a drainage platform are installed on the top and bottom of the treatment frame, respectively. Twisting components are installed on both sides inside the treatment frame for dynamically peeling off viscoelastic solid phase inclusions in waste drilling fluid. The processing frame is equipped with a flexible friction peeling component that is rotatably connected to the twisting component. This component is used to adhere, stretch, and peel off the viscoelastic package. The top and bottom of the flexible friction peeling component are fitted with accordion covers that are slidably connected to the processing frame.
[0006] Through the above technical solution, the combined action of the roller's "differential counter-rotation and up-and-down reciprocating motion" can achieve a highly efficient "twisting" effect on the package, which can completely peel it off from the liquid flow, thereby releasing the encapsulated useful liquid phase (water, oil and chemical agents) to the greatest extent.
[0007] Furthermore, the twisting assembly includes two L-shaped mounting pieces arranged in a mirror image, and the L-shaped mounting pieces are fixedly connected to the side wall of the processing frame. At the same time, a double bevel gear rod is rotatably connected through the processing frame and the two L-shaped mounting pieces. The two ends of the double bevel gear rod are connected to main bevel gears, and the connecting shaft of the main bevel gear is rotatably connected through the processing frame and the L-shaped mounting pieces. Two irregularly shaped rods arranged in opposite directions are provided on both sides of the processing frame, and one end of the two irregularly shaped rods is fixedly connected to each other. At the connection point of the two irregularly shaped rods, a second connecting rod is rotatably connected through the connection point.
[0008] Furthermore, the two connecting rods located on both sides of the processing frame are rotatably connected to an inclined frame at the ends away from the irregular rods. The inclined frame has a slot through it on the side closer to the higher part, and the slot is located at the center of the inclined frame. After the viscoelastic inclusion and the liquid fall onto the inclined frame, under the action of gravity and the inclined setting of the inclined frame, the viscoelastic inclusion slides down the surface of the inclined frame to a lower position, and the liquid falls through the slot to the drainage platform at the bottom of the processing frame for solid-liquid separation.
[0009] Through the above technical solutions, the reciprocating motion of the rollers achieves self-cleaning, preventing the inherent clogging problem of high-viscosity materials. The vibration of the tilting frame achieves dynamic pre-sorting, initially separating liquid and solid during the transmission stage. This dynamic design of the entire process ensures that the equipment can operate stably and continuously for a long time.
[0010] Furthermore, an L-shaped rod is fixedly connected to the end of the irregular rod away from the second connecting rod, and the other end of the L-shaped rod is rotatably connected to the processing frame. At the same time, a first connecting rod is rotatably connected through the connection between the irregular rod and the L-shaped rod. The through end of the main bevel gear connecting shaft is fixedly connected to one of the L-shaped rods. A first motor is installed on the side of the processing frame away from the double bevel gear rod. A connecting shaft is installed on the output end of the first motor, and the connecting shaft at the output end of the first motor is rotatably connected through the processing frame. At the same time, the through end of the connecting shaft at the output end of the first motor is fixedly connected to another L-shaped rod.
[0011] Furthermore, the flexible friction peeling assembly includes two mirror-shaped sliding frames, which are slidably connected to the processing frame. The processing frame laterally limits the sliding frames. Rollers are rotatably connected inside the sliding frames, and several flexible protrusions are provided on the two rollers. The flexible protrusions on the two rollers are staggered. The top and bottom of the sliding frames are fixed to the bellows cover, and the end of the bellows cover away from the sliding frame is fixed to the processing frame. The two sides of the bellows cover are engaged with the processing frame. The end of the first connecting rod away from the irregular rod is rotatably connected to the sliding frame. A second motor is installed on one side of one of the sliding frames, and a connecting shaft is installed at the output end of the second motor. The connecting shaft at the output end of the second motor is rotatably connected to the sliding frame through it. The through end of the connecting shaft at the output end of the second motor is fixedly connected to the roller.
[0012] Through the above technical solution, the bellows cover extends and retracts with the reciprocating motion of the sliding frame, which can effectively prevent drilling fluid and abrasive particles from entering the transmission components, greatly extending the service life of the transmission system and reducing maintenance frequency and cost.
[0013] Furthermore, a bevel gear ring is fixedly connected to the side of the sliding frame away from the second motor, and a cross bevel gear rod is driven by the bevel gear ring. At the same time, one end of the central shaft of the cross bevel gear rod is rotatably connected to the sliding frame, and the through end of the cross bevel gear rod is fixedly connected to the second motor, so that the second motor drives the roller to rotate while driving the cross bevel gear rod to rotate synchronously. A bevel gear disc is driven by the side of the cross bevel gear rod away from the bevel gear ring, and the bevel gear disc is rotatably connected to the other end of the central shaft of the cross bevel gear rod. A second internal gear disc is provided on one side of the bevel gear ring, and the connecting shaft of the second internal gear disc is rotatably connected to another sliding frame. At the same time, the through end of the connecting shaft of the second internal gear disc is fixedly connected to the roller.
[0014] Furthermore, the second internal gear disk is rotatably connected to the first internal gear disk on the side away from the sliding frame. A special-shaped mounting component, a first gear, and a second gear are provided between the first and second internal gear disks. The second gear and the first gear are rotatably connected to the special-shaped mounting component, and the special-shaped mounting component is fixedly connected to the side wall of the sliding frame. At the same time, the first gear and the second gear are meshed and driven. The second gear is driven and connected to the inner wall of the second internal gear disk, and the first gear is driven and connected to the inner wall of the first internal gear disk, so that the second internal gear disk and the first internal gear disk can achieve synchronous reverse rotation through gear meshing.
[0015] Through the above technical solution, the differential rotation of the rollers generates a continuously changing velocity gradient and shear stress field in the gap between the two rollers. The viscoelastic inclusions in the drilling fluid flowing through this area are repeatedly squeezed, stretched and kneaded, thus being efficiently stripped away.
[0016] Furthermore, the bevel gear disc and the first internal gear disc are respectively provided with two second connecting plates and a first connecting plate on the side away from the sliding frame, and the two second connecting plates are rotatably connected to the first connecting plate. A second synchronous belt assembly is rotatably connected between the two first connecting plates, and a first synchronous belt assembly is rotatably connected between the two second connecting plates. At the same time, the end of the first connecting plate away from the second connecting plate is rotatably connected to the bevel gear disc, and the end of the second connecting plate away from the first connecting plate is rotatably connected to the first internal gear disc.
[0017] Furthermore, one of the synchronous pulley connecting shafts in the second synchronous belt assembly is rotatably connected to the first connecting plate and then fixedly connected to the bevel gear disk. Similarly, one of the synchronous pulley connecting shafts in the first synchronous belt assembly is rotatably connected to the second connecting plate and then fixedly connected to the first internal gear disk. Simultaneously, another synchronous pulley connecting shaft in the first synchronous belt assembly is rotatably connected to both the first and second connecting plates and then fixedly connected to another synchronous pulley within the first connecting plate. This allows the rotation of the bevel gear disk to drive the first internal gear disk to rotate synchronously via the second and first synchronous belt assemblies, thereby causing the second internal gear disk to reverse.
[0018] Through the above technical solutions, the inclined frame dynamic sorting avoids the caking and stagnation of materials on the inclined surface, ensures the rapid discharge of liquids and the smooth transport of solids, making the entire processing process smooth and continuous, with efficiency far exceeding that of static settling or simple inclined slides.
[0019] A treatment method for a recycling device based on waste drilling fluid recovery includes the following specific steps: Step 1: Move the entire treatment unit to the designated work site, place the solid waste collection box under the end of the tilting frame of the unit, and connect the drainage platform of the unit to the guide channel of the existing external secondary purification treatment equipment; Step 2: Start motors 1 and 2, and then inject the collected waste drilling fluid from above the guide platform, which flows into the flexible friction stripping component area through the internal channel of the treatment frame. Step 3: Driven by the No. 2 motor, through a transmission system consisting of a synchronous belt, bevel gears, and internal gear discs, the two rollers covered with flexible protrusions rotate at different speeds in opposite directions. At the same time, the No. 1 motor drives the sliding frame equipped with the rollers to perform vertical up-and-down reciprocating motion through an L-shaped rod, an irregular rod, and a linkage mechanism. Step 4: The flexible protrusions on the roller surface alternately squeeze and release the flowing drilling fluid, causing the viscoelastic inclusions within to adhere, stretch, and mechanically peel off. Step 5: The stripped mixture drips onto the movable inclined frame, which moves up and down reciprocally under the drive of the linkage mechanism. This vibration causes the liquid and fine particles with better flowability to flow faster along the inclined surface and are preferentially discharged through the slot at the bottom, while the viscous blocky inclusions move slowly and gradually slide into the collection box at the end of the inclined frame, thus achieving preliminary liquid-solid pre-separation. Step Six: The liquid flowing out of the slot at the bottom of the tilting frame enters the drainage platform, and then flows into the connected guide channel under the action of gravity, and is transported to the subsequent re-purification stage. Step 7: The liquid entering the re-purification stage, after further deep purification treatment, can be reused in the drilling process, thereby realizing the recycling of drilling fluid.
[0020] The beneficial effects of the present invention are as follows: (1) The present invention adopts a twisting assembly, and the No. 1 motor drives the L-shaped rod to rotate, which drives the irregular rod to move. Then, the rotational motion is converted into the linear reciprocating motion of the sliding frame through the No. 1 connecting rod, so that the roller not only rotates at a differential speed, but also moves up and down continuously. The contact between the flexible protrusions on its surface and the viscoelastic package is no longer static crushing, but dynamic and all-round "rubbing, kneading and twisting", which greatly enhances the mechanical peeling efficiency of the stubborn package. (2) This invention employs a flexible friction stripping assembly driven by a second motor. The assembly consists of a cross bevel gear, a bevel gear disc, and a synchronous belt. Ultimately, the gears of the first and second internal gear discs mesh, ensuring that the two rollers rotate towards each other at slightly different speeds. This differential rotation generates a continuously changing velocity gradient and shear stress field between the two rollers. Viscoelastic inclusions in the drilling fluid flowing through this area are repeatedly squeezed, stretched, and kneaded, thus being efficiently stripped away. Attached Figure Description
[0021] Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the second perspective structure of the present invention; Figure 3 This is a schematic diagram of the third-view structure of the present invention; Figure 4 This is a schematic diagram of the fourth perspective structure of the present invention; Figure 5 yes Figure 2 A magnified structural diagram at point A; Figure 6 yes Figure 3 A magnified structural diagram at point B; Figure 7 yes Figure 4 A magnified structural diagram at point C; Figure 8 This is a schematic diagram of the bottom structure of the processing frame of the present invention; Figure 9 This is a schematic diagram of the top structure of the processing frame of the present invention; Figure 10 yes Figure 8 A magnified structural diagram at point D; Figure 11 yes Figure 9 A magnified structural diagram at point E; Figure 12 This is a schematic diagram of the roller structure of the present invention; Figure 13 This is an exploded view from the first perspective of the No. 1 internal gear disk and the No. 2 internal gear disk of the present invention; Figure 14 This is a second-view exploded view of the No. 1 and No. 2 internal gear disks of the present invention; Figure 15 This is a third-view exploded view of the No. 1 and No. 2 internal gear disks of the present invention.
[0022] Reference numerals: 11. Processing frame; 12. Guide platform; 13. Drainage platform; 14. Bellows cover; 2. Twisting assembly; 21. Irregularly shaped rod; 22. L-shaped rod; 23. Motor No. 1; 24. Connecting rod No. 1; 25. Connecting rod No. 2; 26. L-shaped mounting piece; 27. Main bevel gear; 28. Double bevel gear rod; 29. Inclined frame; 210. Groove; 3. Flexible friction peeling assembly; 31. Sliding frame; 32. Motor No. 2; 33. Roller; 34. Connecting plate No. 1; 35. Connecting plate No. 2; 36. Synchronous belt assembly No. 1; 37. Synchronous belt assembly No. 2; 38. Bevel gear disc; 39. Cross bevel gear rod; 310. Bevel gear ring; 311. Internal gear disc No. 1; 312. Gear No. 1; 313. Irregularly shaped mounting piece; 314. Gear No. 2; 315. Internal gear disc No. 2. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0024] like Figure 1 - Figure 10This embodiment of a waste drilling fluid recycling device includes a processing frame 11 with a hollow internal structure. The processing frame 11 is open on both sides, top, and bottom. A guide platform 12 and a drainage platform 13 are respectively installed on the top and bottom of the processing frame 11. Twisting components 2 are installed on both sides inside the processing frame 11 to dynamically peel off viscoelastic solid phase inclusions in the waste drilling fluid. The twisting components 2 include two L-shaped mounting parts 26 arranged in a mirror image and fixedly connected to the side wall of the processing frame 11. The bellows cover 14 extends and retracts with the reciprocating motion of the sliding frame 31, which can effectively prevent drilling fluid and abrasive particles from entering the transmission part. The internal components greatly extend the service life of the transmission system and reduce maintenance frequency and cost. At the same time, a double bevel gear rod 28 is rotatably connected between the processing frame 11 and the two L-shaped mounting parts 26. The two ends of the double bevel gear rod 28 are connected to the main bevel gear 27, and the connecting shaft of the main bevel gear 27 is rotatably connected to the processing frame 11 and the L-shaped mounting parts 26. Two irregular rods 21 with opposite directions are provided on both sides of the processing frame 11. An L-shaped rod 22 is fixedly connected to the end of the irregular rod 21 away from the second connecting rod 25, and the other end of the L-shaped rod 22 is rotatably connected to the processing frame 11. At the same time, a first connecting rod 24 is rotatably connected through the connection between the irregular rod 21 and the L-shaped rod 22.
[0025] like Figures 2-10 As shown, the main bevel gear 27 is fixedly connected to one of the L-shaped rods 22 via its connecting shaft. A motor 23 is mounted on the side of the processing frame 11 away from the double bevel gear rod 28. A connecting shaft is mounted on the output end of the motor 23, and this connecting shaft is rotatably connected to the processing frame 11. Simultaneously, the connecting shaft at the output end of the motor 23 is fixedly connected to another L-shaped rod 22 via its connecting shaft. One end of each of the two irregularly shaped rods 21 is fixedly connected to the other. A second connecting rod 25 is rotatably connected through the connection point of the two irregularly shaped rods 21. An inclined [connector] is rotatably connected between the ends of the second connecting rods 25 located on both sides of the processing frame 11 away from the irregularly shaped rods 21. The inclined frame 29 has a slot 210 through it on the side near the higher part of the inclined frame 29. The slot 210 is located at the center of the inclined frame 29. The differential rotation of the rollers 33 generates a continuously changing velocity gradient and shear stress field in the gap between the two rollers 33. The viscoelastic inclusions in the drilling fluid flowing through this area are repeatedly squeezed, stretched and kneaded, thus being efficiently stripped. After the viscoelastic inclusions and liquid fall onto the inclined frame 29, under the action of gravity and the inclined setting of the inclined frame 29, the viscoelastic inclusions slide down the surface of the inclined frame 29, and the liquid falls through the slot 210 to the drainage platform 13 at the bottom of the processing frame 11 for solid-liquid separation.
[0026] like Figures 1-15As shown, the processing frame 11 is equipped with a flexible friction peeling assembly 3 that is rotatably connected to the twisting assembly 2. This assembly is used to adhere, stretch, and peel the viscoelastic package. The top and bottom of the flexible friction peeling assembly 3 are fitted with bellows covers 14 that are slidably connected to the processing frame 11. The flexible friction peeling assembly 3 includes two mirror-shaped sliding frames 31. A bevel gear ring 310 is fixedly connected to the side of the sliding frame 31 away from the second motor 32. The bevel gear ring 310 is driven by a cross bevel gear rod 39. Simultaneously, the cross bevel gear rod 39... One end of the central shaft is rotatably connected to the sliding frame 31, and the through end of the cross bevel gear rod 39 is fixedly connected to the second motor 32, so that the second motor 32 drives the roller 33 to rotate while driving the cross bevel gear rod 39 to rotate synchronously. The side of the cross bevel gear rod 39 away from the bevel gear ring 310 is connected to the bevel gear disk 38. The bevel gear disk 38 and the first internal gear disk 311 away from the sliding frame 31 are respectively provided with two second connecting plates 35 and one connecting plate 34, and the two second connecting plates 35 are rotatably connected to the first connecting plate 34.
[0027] like Figures 2-15 As shown, a second synchronous belt assembly 37 is rotatably connected between the two first connecting plates 34. One of the synchronous pulley connecting shafts in the second synchronous belt assembly 37 is rotatably connected to the first connecting plate 34 and then connected and fixed to the bevel gear disk 38. Similarly, one of the synchronous pulley connecting shafts in the first synchronous belt assembly 36 is rotatably connected to the second connecting plate 35 and then connected and fixed to the first internal gear disk 311. The reciprocating motion of the roller 33 achieves self-cleaning, preventing the inherent clogging problem of high-viscosity materials. The vibration of the tilting frame 29 achieves dynamic pre-sorting, initially separating liquid and solid during the transmission stage. This dynamic design throughout the entire process ensures that the equipment can operate stably and continuously for a long time. Meanwhile, another synchronous pulley connecting shaft in the first synchronous belt assembly 36 is connected to the first connecting plate 34 and the second synchronous belt assembly 38. After plate 35 is rotatably connected, it is fixedly connected to another synchronous pulley inside the first connecting plate 34, so that the rotation of the bevel gear disk 38 drives the first internal gear disk 311 to rotate synchronously through the second synchronous belt assembly 37 and the first synchronous belt assembly 36, thereby driving the second internal gear disk 315 to reverse. The first synchronous belt assembly 36 is rotatably connected between the two second connecting plates 35. At the same time, the end of the first connecting plate 34 away from the second connecting plate 35 is rotatably connected to the bevel gear disk 38, and the end of the second connecting plate 35 away from the first connecting plate 34 is rotatably connected to the first internal gear disk 311. The bevel gear disk 38 is rotatably connected to the other end of the central shaft of the cross bevel gear rod 39. The second internal gear disk 315 is provided on one side of the bevel ring 310, and the second internal gear disk 315 is rotatably connected to the first internal gear disk 311 on the side away from the sliding frame 31.
[0028] like Figures 3-15As shown, a special-shaped mounting part 313, a first gear 312, and a second gear 314 are provided between the first internal gear disk 311 and the second internal gear disk 315. The second gear 314 and the first gear 312 are rotatably connected to the special-shaped mounting part 313, and the special-shaped mounting part 313 is fixedly connected to the side wall of the sliding frame 31. At the same time, the first gear 312 and the second gear 314 are meshed and driven, and the second gear 314 is driven and driven by the inner wall of the second internal gear disk 315. The first gear 312 is driven and driven by the inner wall of the first internal gear disk 311, so that the second internal gear disk 315 and the first internal gear disk 311 can rotate synchronously in opposite directions through gear meshing. The connecting shaft of the second internal gear disk 315 is connected to another sliding frame. The through-rotation connection 31 and the dynamic sorting of the inclined frame 29 avoid the caking and retention of materials on the inclined surface, ensuring rapid discharge of liquid and smooth conveying of solids, making the entire processing process smooth and continuous, with efficiency far exceeding that of static settling or simple inclined slides. At the same time, the through end of the connecting shaft of the No. 2 internal gear disc 315 is connected and fixed to the roller 33. Through the combined action of the roller 33's "differential counter-rotation and up-and-down reciprocating motion", the encapsulated body is subjected to an efficient "twisting" effect, which can completely peel it off from the liquid flow, thereby maximizing the release of the encapsulated useful liquid phase (water, oil and chemical agents). The sliding frame 31 is slidably connected to the processing frame 11, and the processing frame 11 provides lateral limit for the sliding frame 31.
[0029] like Figures 4-15 As shown, a roller 33 is rotatably connected inside the sliding frame 31, and several flexible protrusions are provided on the two rollers 33. The flexible protrusions on the two rollers 33 are arranged in an alternating manner. The top and bottom of the sliding frame 31 are fixedly installed with the bellows cover 14, and the end of the bellows cover 14 away from the sliding frame 31 is fixedly installed with the processing frame 11. At the same time, the two sides of the bellows cover 14 are engaged with the processing frame 11. The end of the first connecting rod 24 away from the irregular rod 21 is rotatably connected with the sliding frame 31. A second motor 32 is installed on one side of one of the sliding frames 31, and a connecting shaft is installed at the output end of the second motor 32. The connecting shaft at the output end of the second motor 32 is rotatably connected to the sliding frame 31 through it. The through end of the connecting shaft at the output end of the second motor 32 is fixedly connected to the roller 33.
[0030] A treatment method for a recycling device based on waste drilling fluid recovery includes the following specific steps: Step 1: Move the entire treatment unit to the designated work site, place the solid waste collection box below the end of the tilting frame 29 of the unit, and connect the drainage platform 13 of the unit to the guide channel of the existing external secondary purification treatment equipment; Step 2: Start motor 23 and motor 32, and then inject the collected waste drilling fluid from above the guide platform 12, and let it flow into the area of the flexible friction stripping component 3 through the internal channel of the processing frame 11. Step 3: Driven by motor 32, the two rollers 33 covered with flexible protrusions rotate in opposite directions at a different speed through a transmission system consisting of synchronous belt, bevel gear, internal gear disc, etc. At the same time, motor 23 drives the sliding frame 31 equipped with rollers 33 to perform vertical up-and-down reciprocating motion through L-shaped rod 22, irregular rod 21 and linkage mechanism. Step 4: The flexible protrusions on the surface of roller 33 alternately squeeze and release the flowing drilling fluid, causing the viscoelastic inclusions to adhere, stretch, and mechanically peel off. Step 5: The stripped mixture drips onto the movable inclined frame 29. The inclined frame 29 moves up and down reciprocally under the drive of the linkage mechanism. This vibration causes the liquid and fine particles with good fluidity to flow faster along the inclined surface and are preferentially discharged through the slot 210 at the bottom, while the viscous blocky inclusions move slowly and gradually slide into the collection box at the end of the inclined frame 29, thus achieving preliminary liquid-solid pre-separation. Step 6: The liquid flowing out from the slot 210 at the bottom of the inclined frame 29 has had most of the viscoelastic solid phase removed and enters the drainage platform 13. Then, under the action of gravity, it flows into the connected guide channel and is transported to the subsequent re-purification stage. Step 7: The liquid entering the re-purification stage, after further deep purification treatment, can be reused in the drilling process, thereby realizing the recycling of drilling fluid.
[0031] The working principle of this embodiment is as follows: after moving the entire equipment to the processing location, a collection box is placed below the end of the tilting frame 29, and the drainage platform 13 is connected to the guide channel of the existing re-purification processing equipment. The first motor 23 and the second motor 32 are started, and then the collected waste drilling fluid is injected from above the guide platform 12 and flows into the area of the flexible friction stripping component 3 through the internal channel of the processing frame 11.
[0032] At this time, the second motor 32 drives the roller 33 connected inside the sliding frame 31 to rotate, which in turn drives the cross bevel gear rod 39 to rotate synchronously. When the cross bevel gear rod 39 rotates, the bevel gear on the cross bevel gear rod 39 meshes with the bevel gear ring 310, thereby rotating on its own, thereby driving the bevel gear disk 38 to operate synchronously, realizing the differential rotation of the bevel gear disk 38 and the cross bevel gear rod 39.
[0033] When the bevel gear disc 38 rotates, it directly drives the second synchronous belt assembly 37 in the two first connecting plates 34 to drive the first synchronous belt assembly 36 on the second connecting plate 35 to drive synchronously, thereby driving the first internal gear disc 311 to rotate.
[0034] When the first internal gear disk 311 rotates, its internal teeth mesh with the first gear 312, driving the second gear 314 on the irregular mounting part 313 to rotate synchronously, which in turn drives the second internal gear disk 315 to rotate in the opposite direction, thereby driving the roller 33 in the other sliding frame 31 to rotate synchronously in the opposite direction, so that the two rollers 33 form a differential counter-rotation. Under the action of differential counter-rotation, the flexible material on the surface of the two rollers 33 produces an alternating squeezing and releasing effect. When the viscoelastic inclusions in the waste drilling fluid come into contact with the flexible and textured surface of the rollers 33, they will generate a large adhesive force and friction force, and be "sticked up" or "pulled up", thus being mechanically "peeled" out from the main body of the fluid flow.
[0035] The operation of motor 23 drives L-shaped rod 22 to rotate, and irregular rod 21 rotates synchronously with L-shaped rod 22. This causes the two connecting rods 24 and irregular rod 21 to rotate relative to each other and perform alternating up-and-down reciprocating motion. This, in turn, drives the two sliding frames 31 to perform alternating up-and-down reciprocating motion along the vertical direction of the processing frame 11, so that the two rollers 33 can achieve alternating up-and-down reciprocating motion while rotating in opposite directions at different speeds.
[0036] As the sliding frame 31 moves up and down, its outer connecting plate 34 and connecting plate 35 rotate synchronously, ensuring that the first synchronous belt assembly 36 and the second synchronous belt assembly 37 remain taut to guarantee the continuity and stability of the transmission.
[0037] Under this combined motion, a small amount of highly viscous material remains between the flexible protrusions of roller 33. Roller 33 will periodically "plow" over the texture of its cooperating fixed scraper or another roller 33, just like a plow. This can forcefully "plow" out the residue stuck deep in the texture, so that the contact area and micro-angle between the roller surface and the material and scraper are constantly changing dynamically, thus avoiding the continuous accumulation of contaminants at fixed points.
[0038] The peeled-off viscoelastic inclusions and remaining droplets fall onto the tilting frame 29. When the shaped rod 21 rotates, it causes relative rotation between the second connecting rod 25 and the shaped rod 21, and swings up and down synchronously with the rotation of the shaped rod 21. This causes relative rotation between the hinge point of the second connecting rod 25 and the tilting frame 29, and then causes the tilting frame 29 to move up and down along the inner wall of the processing frame 11.
[0039] Liquids and fine particles with good fluidity will accelerate their flow along the surface of the inclined frame 29 under vibration and preferentially pass through the slot 210. Viscous, large viscoelastic inclusions, due to their strong cohesion and adhesion, move relatively slowly under vibration and cannot quickly pass through the slot 210. Instead, they slowly slide along the inclined surface of the inclined frame 29 to the end and finally fall into the collection box below.
[0040] The separated liquid is continuously discharged through the drainage platform 13. The liquid discharged through the drainage platform 13 flows into the guide channel under the action of gravity and flows into the re-purification treatment equipment along the preset path for re-purification and recycling preparation, so as to realize resource reuse.
[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A recycling treatment device based on waste drilling fluid recovery, comprising a treatment frame (11) with a hollow internal structure, and the treatment frame (11) being open on both sides, top and bottom, and a flow guide platform (12) and a drainage platform (13) respectively installed on the top and bottom of the treatment frame (11), characterized in that: The processing frame (11) has twisting components (2) installed on both sides inside for dynamically stripping viscoelastic solid inclusions from waste drilling fluid. The processing frame (11) is provided with a flexible friction peeling component (3) that is rotatably connected to the twisting component (2) for adhering, stretching and peeling the viscoelastic package. The top and bottom of the flexible friction peeling component (3) are fitted with accordion covers (14) that are slidably connected to the processing frame (11).
2. The recycling treatment device based on waste drilling fluid recovery according to claim 1, characterized in that, The twisting assembly (2) includes two L-shaped mounting pieces (26) arranged in a mirror image. The L-shaped mounting pieces (26) are fixedly connected to the side wall of the processing frame (11). A double bevel gear rod (28) is rotatably connected between the processing frame (11) and the two L-shaped mounting pieces (26). The two ends of the double bevel gear rod (28) are connected to the main bevel gear (27). The connecting shaft of the main bevel gear (27) is rotatably connected to the processing frame (11) and the L-shaped mounting pieces (26). Two irregular rods (21) arranged in opposite directions are provided on both sides of the processing frame (11). One end of the two irregular rods (21) is fixedly connected to each other. A second connecting rod (25) is rotatably connected at the connection point of the two irregular rods (21).
3. A recycling treatment device based on waste drilling fluid recovery according to claim 2, characterized in that, The second connecting rod (25) located on both sides of the processing frame (11) is rotatably connected to the end away from the irregular rod (21) by an inclined frame (29). The inclined frame (29) has a slot (210) through it on the side closer to the high position. At the same time, the slot (210) is located at the center of the inclined frame (29). After the viscoelastic package and the liquid fall onto the inclined frame (29), under the action of gravity and the inclined setting of the inclined frame (29), the viscoelastic package slides down the surface of the inclined frame (29) to a lower position, and the liquid falls through the slot (210) to the drainage platform (13) at the bottom of the processing frame (11) for solid-liquid separation.
4. A recycling treatment device based on waste drilling fluid recovery according to claim 2, characterized in that, The irregular rod (21) is fixedly connected to an L-shaped rod (22) at one end away from the second connecting rod (25), and the other end of the L-shaped rod (22) is rotatably connected to the processing frame (11). At the same time, a first connecting rod (24) is rotatably connected through the connection between the irregular rod (21) and the L-shaped rod (22). The connecting shaft of the main bevel gear (27) is fixedly connected to one of the L-shaped rods (22) through the connection. A first motor (23) is installed on the side of the processing frame (11) away from the double bevel gear rod (28). A connecting shaft is installed at the output end of the first motor (23), and the connecting shaft at the output end of the first motor (23) is rotatably connected through the processing frame (11). At the same time, the connecting shaft at the output end of the first motor (23) is fixedly connected through the connection to another L-shaped rod (22).
5. A recycling treatment device based on waste drilling fluid recovery according to claim 4, characterized in that, The flexible friction peeling assembly (3) includes two sliding frames (31) arranged in a mirror image, and the sliding frames (31) are slidably connected to the processing frame (11). At the same time, the processing frame (11) provides lateral limitation for the sliding frames (31). Rollers (33) are rotatably connected inside the sliding frames (31), and a number of flexible protrusions are provided on the two rollers (33). The flexible protrusions on the two rollers (33) are arranged in an alternating manner. The top and bottom of the sliding frames (31) are fixed to the bellows cover (14), and the bellows cover (14) is away from the sliding frames. (31) One end is fixed to the processing frame (11), and the two sides of the bellows cover (14) are engaged with the processing frame (11). The end of the first connecting rod (24) away from the irregular rod (21) is rotatably connected to the sliding frame (31). A second motor (32) is installed on one side of one of the sliding frames (31), and a connecting shaft is installed at the output end of the second motor (32). At the same time, the connecting shaft at the output end of the second motor (32) is rotatably connected to the sliding frame (31). The end of the connecting shaft at the output end of the second motor (32) is connected and fixed to the roller (33).
6. A recycling treatment device based on waste drilling fluid recovery according to claim 5, characterized in that, A bevel gear ring (310) is fixedly connected to the side of the sliding frame (31) away from the second motor (32), and the bevel gear ring (310) is driven by a cross bevel gear rod (39). At the same time, one end of the central shaft of the cross bevel gear rod (39) is rotatably connected to the sliding frame (31), and the through end of the cross bevel gear rod (39) is fixedly connected to the second motor (32), so that when the second motor (32) drives the roller (33) to rotate, it drives the cross bevel gear rod (39) synchronously. Rotating, the bevel gear rod (39) is connected to a bevel gear disk (38) on the side away from the bevel gear ring (310), and the bevel gear disk (38) is rotatably connected to the other end of the central shaft of the bevel gear rod (39). A second internal gear disk (315) is provided on one side of the bevel gear ring (310), and the connecting shaft of the second internal gear disk (315) is rotatably connected to another sliding frame (31). At the same time, the through end of the connecting shaft of the second internal gear disk (315) is connected and fixed to the roller (33).
7. A recycling treatment device based on waste drilling fluid recovery according to claim 6, characterized in that, The second internal gear disk (315) is rotatably connected to the first internal gear disk (311) on the side away from the sliding frame (31). A special-shaped mounting part (313), a first gear (312), and a second gear (314) are provided between the first internal gear disk (311) and the second internal gear disk (315). The second gear (314) and the first gear (312) are rotatably connected to the special-shaped mounting part (313), and the special-shaped mounting part (313) is fixedly connected to the side wall of the sliding frame (31). At the same time, the first gear (312) and the second gear (314) are meshed and connected. The second gear (314) is connected to the inner wall of the second internal gear disk (315), and the first gear (312) is connected to the inner wall of the first internal gear disk (311), so that the second internal gear disk (315) and the first internal gear disk (311) can achieve synchronous reverse rotation through gear meshing.
8. A recycling treatment device based on waste drilling fluid recovery according to claim 7, characterized in that, The bevel gear disc (38) and the first internal gear disc (311) are respectively provided with two second connecting plates (35) and a first connecting plate (34) on the side away from the sliding frame (31). The two second connecting plates (35) are rotatably connected to the first connecting plate (34). A second synchronous belt assembly (37) is rotatably connected between the two first connecting plates (34). A first synchronous belt assembly (36) is rotatably connected between the two second connecting plates (35). At the same time, the end of the first connecting plate (34) away from the second connecting plate (35) is rotatably connected to the bevel gear disc (38). The end of the second connecting plate (35) away from the first connecting plate (34) is rotatably connected to the first internal gear disc (311).
9. A recycling treatment device based on waste drilling fluid recovery according to claim 8, characterized in that, One of the synchronous pulley connecting shafts in the second synchronous belt assembly (37) is rotatably connected to the first connecting plate (34) and then connected and fixed to the bevel gear disk (38). One of the synchronous pulley connecting shafts in the first synchronous belt assembly (36) is rotatably connected to the second connecting plate (35) and then connected and fixed to the first internal gear disk (311). At the same time, another synchronous pulley connecting shaft in the first synchronous belt assembly (36) is rotatably connected to the first connecting plate (34) and the second connecting plate (35) and then connected and fixed to another synchronous pulley in the first connecting plate (34). This makes the rotation of the bevel gear disk (38) drive the first internal gear disk (311) to rotate synchronously through the second synchronous belt assembly (37) and the first synchronous belt assembly (36), thereby driving the second internal gear disk (315) to reverse.
10. A treatment method for a recycling treatment device based on waste drilling fluid recovery, characterized in that, The waste drilling fluid recycling and treatment device according to claims 1-9 includes the following specific steps: Step 1: Move the entire treatment device to the designated work site, place the solid waste collection box under the end of the tilting frame (29) of the device, and connect the drainage platform (13) of the device to the guide channel of the existing external re-purification treatment equipment; Step 2: Start motor 1 (23) and motor 2 (32), and then inject the collected waste drilling fluid from above the guide platform (12), and flow into the area of the flexible friction stripping assembly (3) through the internal channel of the processing frame (11); Step 3: Driven by the second motor (32), through a transmission system consisting of a synchronous belt, bevel gears, internal gear discs, etc., the two rollers (33) covered with flexible protrusions will eventually rotate in opposite directions at a different speed. At the same time, the first motor (23) drives the sliding frame (31) equipped with rollers (33) to perform vertical up-and-down reciprocating motion through the L-shaped rod (22), the irregular rod (21) and the linkage mechanism. Step 4: The flexible protrusions on the surface of the roller (33) alternately squeeze and release the drilling fluid flowing through it, causing the viscoelastic inclusions to adhere, stretch and mechanically peel off. Step 5: The stripped mixture drips onto the movable inclined frame (29). The inclined frame (29) moves up and down under the drive of the linkage mechanism. This vibration causes the liquid and fine particles with good fluidity to flow faster along the inclined surface and are discharged preferentially through the slot (210) at the bottom, while the viscous blocky inclusions move slowly and gradually slide into the collection box at the end of the inclined frame (29), thus achieving preliminary liquid-solid pre-separation. Step 6: The liquid flowing out from the slot (210) at the bottom of the inclined frame (29) (most of the viscoelastic solid phase has been removed) enters the drainage platform (13), and then flows into the connected guide channel under the action of gravity, and is transported to the subsequent re-purification stage. Step 7: The liquid entering the re-purification stage, after further deep purification treatment, can be reused in the drilling process, thereby realizing the recycling of drilling fluid.