A cooling device for oil drilling mud

Abstract

This utility model relates to an oil drilling mud cooling device, comprising: a first cooling tank with a feed pipe at its top; a second cooling tank located at the bottom of the first cooling tank and connected to its bottom; a mud dispersing assembly located in both the first and second cooling tanks for dispersing the mud; a mud tank located at the bottom of the second cooling tank and connected to it, with a discharge pipe; and an air-cooling assembly connected to both the first and second cooling tanks for delivering cold air into them, allowing heat exchange between the cold air and the mud. Through the first, second, and mud tanks, the mud can be cooled multiple times; the mud dispersing assembly further disperses the mud, increasing the heat exchange area while preventing blockages in the first and second cooling tanks.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling technology, and in particular to an oil drilling mud cooling device. Background Technology

[0002] Petroleum is an important energy source and is widely used in many fields. During oil extraction, drilling tools are usually used to drill holes. Due to the continuous rotation of the drill bit, the temperature of the working drill bit is too high, which can easily damage it and greatly reduce its service life. Therefore, drilling mud is needed to assist in the drilling process. Since the drilling mud needs to be reused, it needs to be cooled during the drilling process to avoid high temperature affecting the service life of the drill bit.

[0003] Chinese patent publication number CN115874964A discloses "an oil drilling mud cooling system, including a mud tank and an inner casing installed above the mud tank. The upper end of the inner casing is open, and an outer casing is fitted around the inner casing at intervals. The lower end of the outer casing is open, and a material drop channel is formed between the outer casing and the inner casing. A feed cylinder is installed at the upper end of the outer casing, penetrating the outer casing. The inner casing directly below the feed cylinder is equipped with a throwing mechanism for throwing mud falling out of the feed cylinder into the material drop channel, and an air cooler for air cooling the mud thrown into the material drop channel." While the "structure" can achieve the effect of "the accumulated mud being dispersed outward by centrifugal force, naturally cooling down during the dispersion process, and then the air-cooling mechanism blowing the dispersed mud again after it disperses into the discharge channel, further cooling the mud and thus rapidly cooling it down", its concave design in the mud-throwing cylinder makes it easy for the material to get stuck at the bottom of the feed cylinder after being discharged. In addition, the design of the air-cooling mechanism is not reasonable. When the mud is thrown out, it is easy to enter the air guide port, causing the air-cooling mechanism to lose its function. Therefore, this utility model proposes an oil drilling mud cooling device. Utility Model Content

[0004] This invention provides an oil drilling mud cooling device to solve at least one of the above-mentioned technical problems.

[0005] This utility model provides an oil drilling mud cooling device, comprising: The first cooling box has a feed pipe at the top; The second cooling box is located at the bottom of the first cooling box and is connected to the bottom of the first cooling box; A material dispersing assembly, which is disposed in the first cooling box and the second cooling box, is used to disperse the mud. A mud tank is located at the bottom of the second cooling tank and is connected to the second cooling tank. The mud tank is equipped with a discharge pipe. An air-cooled assembly is connected to the first cooling box and the second cooling box. The air-cooled assembly is used to send cold air into the first cooling box and the second cooling box so that the cold air exchanges heat with the mud.

[0006] In one embodiment, the material dispersing assembly includes a protective box, a first motor, a linkage rod, and a dispersing component. The bottom of the protective box is connected to the mud tank. The bottom of the outer wall of the protective box is connected to the inner wall of the second cooling tank by a plurality of connecting plates, forming an arc-shaped through hole between every two connecting plates. The first motor is installed inside the protective box. The output end of the first motor is connected to one end of the linkage rod. The other end of the linkage rod passes through the protective box and extends into the first cooling tank from the connection port between the first cooling tank and the second cooling tank. The dispersing component is installed on the linkage rod.

[0007] In one embodiment, the dispersing assembly includes multiple material-draining plates, a stirring fan, and multiple stirring rollers. The portion of the linkage rod located inside the first cooling box has multiple stirring rollers evenly spaced along the circumference of the linkage rod. The stirring fan is installed on the linkage rod at the connection opening between the first cooling box and the second cooling box. Multiple material-draining plates are evenly spaced along the circumference of the linkage rod on the lower side of the stirring fan. The material-draining plates abut against the surface of the top of the protective box.

[0008] In one embodiment, a cleaning assembly is further included. The cleaning assembly is installed at the connection between the protective box and the mud tank. The cleaning assembly includes a first transmission assembly, a first rotating rod, a rotating plate, multiple sliding rods, multiple fixed plates, and multiple sets of scraping assemblies. The first transmission assembly is connected to one end of the first rotating rod, and the other end of the first rotating rod is connected to the rotating plate. The rotating plate is located at the connection between the protective box and the mud tank. Each set of scraping assemblies is installed on a corresponding sliding rod. Both ends of each sliding rod are installed on the inner wall of the second cooling box through the fixed plates. Each set of scraping assemblies extends through a corresponding groove located on the side wall of the second cooling box. The scraping assemblies can move within the groove under the rotation driven by the rotating plate and scrape the mud on the connecting plate.

[0009] In one embodiment, each scraping assembly includes a first elastic element, a sliding plate, a scraper, a second elastic element, a lever, and a fixing post. The first elastic element is sleeved on the sliding rod, one end of which is connected to the fixing plate, and the other end is connected to the sliding plate sleeved on the sliding rod. The fixing post is located at the end of the sliding plate near the inner wall of the second cooling box. The fixing post is located in the groove, and the end of the fixing post away from the sliding plate is connected to the scraper. The end of the sliding plate near the rotating plate is connected to the lever through multiple second elastic elements, and the lever can be actuated by the rotating rotating plate.

[0010] In one embodiment, the air-cooling assembly includes an air-collecting box, a second motor, fan blades, a first annular pipe, a second annular pipe, multiple air supply pipes, multiple first air outlet pipes, and multiple second air outlet pipes. The air-collecting box contains fan blades, which are connected to the second motor. The air-collecting box communicates with the first and second annular pipes through the air supply pipes. The first annular pipe is located on the outer periphery of the first cooling box, and the second annular pipe is located on the outer periphery of the second cooling box. The first annular pipe has multiple first air outlet pipes extending into the interior of the first cooling box, and the second annular pipe has multiple second air outlet pipes extending into the interior of the second cooling box.

[0011] In one embodiment, a first baffle is provided on the inner top wall of the first cooling box, which can guide the cold air in the first air outlet duct to the inner wall of the first cooling box. In one embodiment, a second baffle is provided on the inner top wall of the second cooling box, which can guide the cold air in the second air outlet duct to the inner wall of the second cooling box. In one embodiment, the system further includes a liquid cooling assembly, which comprises a water storage tank, a water pump, a liquid cooling pipe, a first water tank, a second water tank, and a delivery pipe. The liquid cooling pipe is S-shaped and disposed within the mud tank. One end of the liquid cooling pipe extends out of the mud tank and is connected in sequence to the water pump and the water storage tank. The other end of the liquid cooling pipe extends out of the mud tank and is connected to the second water tank. The second water tank is connected to the first water tank, and the first water tank is connected to the water storage tank. The second water tank is arranged around the outer wall of the second cooling tank, and the first water tank is disposed inside the first cooling tank, with a conical top. In one embodiment, the cooling device further includes a stirring assembly, which includes multiple second rotating rods, multiple stirring plates, and a second transmission assembly. Each second rotating rod is installed inside the mud tank and located above the liquid cooling pipe. Each second rotating rod is provided with multiple stirring rods, and one end of each second rotating rod extends out of the mud tank and is connected to the second transmission assembly. Compared with the prior art, the advantages of this utility model are that the mud can be cooled multiple times through the first cooling box, the second cooling box and the mud box, thereby increasing the cooling speed of the mud; with the material dispersing component, the mud is dispersed, which can increase the heat exchange area while avoiding blockage in the first cooling box and the second cooling box; the air cooling component can blow cold air into the first cooling box and the second cooling box to cool the mud, and at the same time remove the mud on the inner wall of the first cooling box and the second cooling box. Attached Figure Description

[0012] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of the cooling device of this utility model; Figure 2 This is a cross-sectional view of the cooling device of this utility model; Figure 3 This is a schematic diagram of the overall structure of the cooling device of this utility model from another perspective; Figure 4 This is a schematic diagram of the interior of the second cooling box of this utility model; Figure 5 This is a schematic diagram of the cleaning component of this utility model; Figure 6 This is a schematic diagram of the scraping component of this utility model; Figure 7 This is a schematic diagram of the installation of the scraping component of this utility model; Figure 8 A schematic diagram of the structure of the air-cooled component of this utility model; Figure 9 This is a schematic diagram of the structure of the stirring assembly of this utility model; Figure 10 This is a schematic diagram of the liquid cooling component of this utility model; Figure 11 This is a schematic diagram of the internal components of the second cooling box of this utility model; Figure label: 1. Mud tank; 2. First cooling tank; 3. Second cooling tank; 4. Discharge assembly; 401. Protective box; 4011. First mounting plate; 4012. Second mounting plate; 402. First motor; 403. Linkage rod; 404. Discharge plate; 405. Agitator fan; 406. Agitator roller; 5. Cleaning assembly; 501. First transmission assembly; 5011. Third motor; 5012. First gear; 5013. Second gear; 502. First rotating rod; 503. Rotating plate; 504. Slide rod; 505. Scraping assembly; 5051. First elastic element; 5052. Slide plate; 5053. Scraper; 5054. Second elastic element; 5055. Pulley; 5056. Fixed column; 506. Fixed plate; 6. 7. Liquid cooling assembly; 601. Water storage tank; 602. Water pump; 603. Liquid cooling pipe; 604. First water tank; 605. Second water tank; 606. Infusion pipe; 7. Air cooling assembly; 701. Air collection box; 702. Fixing frame; 703. Second motor; 704. Fan blade; 705. First annular pipe; 706. Second annular pipe; 707. Air supply pipe; 708. First air outlet pipe; 709. Second air outlet pipe; 8. Stirring assembly; 801. Stirring plate; 802. Drive wheel; 803. Driven wheel; 804. Second rotating rod; 805. Belt; 806. Third gear; 9. Slide groove; 10. Base; 11. Discharge pipe; 12. Feed pipe; 13. Connecting plate; 14. First baffle; 15. Second baffle. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Please refer to Figures 1 to 3 A drilling mud cooling device includes: a first cooling tank 2, a second cooling tank 3, a material dispersing assembly 4, a mud tank 1, and an air-cooling assembly 7. The first cooling tank 2 is provided with a feed pipe 12 at its top; the second cooling tank 3 is located at the bottom of the first cooling tank 2 and is connected to the bottom of the first cooling tank 2; the material dispersing assembly 4 is located in the first cooling tank 2 and the second cooling tank 3 and is used to disperse the mud; the mud tank 1 is located at the bottom of the second cooling tank 3 and is connected to the second cooling tank 3, and the mud tank 1 is provided with a discharge pipe 11; the air-cooling assembly 7 is connected to the first cooling tank 2 and the second cooling tank 3 and is used to send cold air into the first cooling tank 2 and the second cooling tank 3 so that the cold air exchanges heat with the mud. The slurry enters the entire cooling device through the feed pipe 12, first entering the first cooling tank 2. The slurry is initially dispersed, facilitating pre-cooling within the first cooling tank 2. Subsequently, the slurry enters the second cooling tank 3, where it is further dispersed during cooling, facilitating heat exchange with the cold air and the coolant in the second water tank 605. After two cooling cycles, the slurry then enters the slurry tank 1 for further liquid cooling. The slurry tank 1 is mounted on the base 10.

[0016] To better implement this utility model, refer to Figure 4 In one embodiment, the material unloading assembly 4 includes a protective box 401, a first motor 402, a linkage rod 403, and a dispersing assembly. The bottom of the protective box 401 is connected to the mud tank 1. A first mounting plate 4011 and a second mounting plate 4012 are arranged sequentially from top to bottom inside the protective box 401. The first mounting plate 4011 is used to install the first motor 402, and the second mounting plate 4012 is used to install the first transmission assembly 501. The bottom of the outer wall of the protective box 401 is connected to the inner wall of the second cooling tank 3 by a plurality of connecting plates 13, and an arc-shaped through hole is formed between every two connecting plates 13. The arc-shaped through hole facilitates the mud in the second cooling tank 3 to continue falling into the mud tank 1. The first motor 402 is provided inside the protective box 401. The output end of the first motor 402 is connected to one end of the linkage rod 403. The other end of the linkage rod 403 passes through the protective box 401 and extends into the first cooling tank 2 from the connection port between the first cooling tank 2 and the second cooling tank 3. A dispersing assembly is provided on the linkage rod 403. The bottom opening of the protective box 401 allows it to communicate with the mud tank 1, so that when the mud enters the protective box 401 from the chute 9, it can fall directly into the mud tank 1. In this embodiment, four connecting plates 13 are provided, evenly distributed around the outer perimeter of the protective box 401.

[0017] Specifically, the dispersing component includes multiple discharge plates 404, stirring fans 405, and multiple stirring rollers 406. Multiple stirring rollers 406 are evenly spaced along the circumference of the linkage rod 403 within the first cooling tank 2. A stirring fan 405 is installed on the linkage rod 403 at the connection point between the first cooling tank 2 and the second cooling tank 3. Multiple discharge plates 404 are evenly spaced along the circumference of the linkage rod 403 below the stirring fan 405, and the discharge plates 404 abut against the top surface of the protective box 401. To ensure sufficient heat exchange between the slurry and the cold air and coolant, the slurry is dispersed as much as possible within the first cooling tank 2 and the second cooling tank 3, and blockage at the connection point is avoided. The dispersing component effectively disperses the slurry while ensuring smooth discharge at the connection point between the first cooling tank 2 and the second cooling tank 3. Inside the first cooling tank 2, the slurry enters through the feed pipe 12 and falls directly onto the top of the first water tank 604. Since the top of the first water tank 604 is conical, it can initially disperse the slurry. Simultaneously, the slurry exchanges heat with the coolant inside the first water tank 604 upon contact with it. The slurry then continues to fall to the bottom of the first cooling tank 2. The bottom of the first cooling tank 2 is funnel-shaped, facilitating the slurry's flow along the funnel-shaped inclined wall into the second cooling tank 3. At the bottom of the first cooling tank 2, a rotatable stirring roller 406 agitates the slurry. Furthermore, because the stirring roller 406 is close to the funnel-shaped inclined wall of the first cooling tank 2, it can scrape off any slurry adhering to the wall, allowing the slurry to fall smoothly. To ensure smooth mud flow, the first motor 402 drives the linkage rod 403 to rotate, which in turn drives the stirring fan 405 and the stirring roller 406 to rotate. The stirring fan 405 ensures unobstructed connection between the first cooling tank 2 and the second cooling tank 3, while also initially dispersing the mud to prevent blockage at the connection point and increase the mud flow rate. After entering the second cooling tank 3, the discharge plate 404 rotates under the drive of the linkage rod 403, throwing the mud onto the inner wall of the second cooling tank 3, thus further dispersing the mud. The mud then flows into the mud tank 1 through the arc-shaped through-hole at the bottom of the second cooling tank 3. The discharge plate 404 not only further disperses the mud but also prevents it from accumulating on the top of the protective tank 401. The mud is collected uniformly in the first cooling tank 2. The stirring fan 405 and the stirring roller 406 can initially disperse the mud inside the first cooling tank 2. At the same time, the stirring fan 405 and the stirring roller 406 can make the mud flow into the second cooling tank 3, avoiding the mud from clogging the connection between the first cooling tank 2 and the second cooling tank 3, and increasing the flow rate of the mud.

[0018] In this embodiment, the top of the protective box 401 is conical, creating a slope from top to bottom to prevent mud accumulation. At the same time, the material discharge plate 404 is close to the surface of the top of the protective box 401 to scrape off the attached mud.

[0019] To better implement this utility model, refer to Figure 5-7 In one embodiment, the cooling device further includes a cleaning assembly 5, which is installed at the connection between the protective box 401 and the mud box 1. The cleaning assembly 5 includes a first transmission assembly 501, a first rotating rod 502, a rotating plate 503, multiple sliding rods 504, multiple fixing plates 506, and multiple sets of scraping assemblies 505. The first transmission assembly 501 is connected to one end of the first rotating rod 502, and the other end of the first rotating rod 502 is connected to the rotating plate 503. The rotating plate 503 is located at the connection between the protective box 401 and the mud box 1. Each set of scraping assemblies 505 is installed on a corresponding sliding rod 504. Both ends of each sliding rod 504 are installed on the inner wall of the second cooling box 3 through the fixing plate 506. Each set of scraping assemblies 505 protrudes through a corresponding groove 9 located on the side wall of the second cooling box 3. The scraping assembly 505 can move within the groove 9 under the rotation driven by the rotating plate 503 and scrape the mud on the connecting plate 13. The number of connecting plates 13, scraping components 505, and sliding grooves 9 is the same. In this embodiment, there are four sets of scraping components 505 and sliding grooves 9. The two ends of one sliding rod 504 in each set of scraping components 505 are connected to the inner wall of the second cooling box 3 through a fixing plate 506. The sliding rod 504 is arc-shaped, and the four sliding rods 504 form a circle centered on the first rotating rod 502.

[0020] Specifically, such as Figure 5 As shown in Figure a, the first transmission assembly 501 includes a third motor 5011, a first gear 5012, and a second gear 5013. The output shaft of the third motor 5011 is connected to the first gear 5012. The first gear 5012 meshes with the second gear 5013. The center of the second gear 5013 is connected to the upper end of the first rotating rod 502. The lower end of the first rotating rod 502 passes through the second mounting plate 4012 and is connected to the rotating plate 503.

[0021] Specifically, such as Figure 5 b、 Figure 6 and Figure 7As shown, each scraping assembly 505 includes a first elastic element 5051, a sliding plate 5052, a scraper 5053, a second elastic element 5054, a pry block 5055, and a fixing post 5056. The first elastic element 5051 is sleeved on the slide rod 504. One end of the first elastic element 5051 is connected to the fixing plate 506, and the other end is connected to the sliding plate 5052 sleeved on the slide rod 504. The fixing post 5056 is provided at one end of the sliding plate 5052 near the inner wall of the second cooling box 3. The fixing post 5056 is located in the slide groove 9, and the end of the fixing post 5056 away from the sliding plate 5052 is... Connected to the scraper 5053, the end of the slide plate 5052 near the rotating plate 503 is connected to the paddle block 5055 via multiple second elastic elements 5054. The paddle block 5055 can be paddled by the rotating plate 503. The end of the paddle block 5055 near the rotating plate 503 is arc-shaped. When the rotating plate 503 paddles the paddle block 5055 until the paddle block 5055 can no longer rotate with the rotating plate 503, the rotating plate 503 continues to rotate, which will squeeze the paddle block 5055, thereby squeezing the second elastic elements 5054, until the rotating plate 503 can completely pass over the paddle block 5055. When the first rotating rod 502 drives the rotating plate 503 to rotate, the rotating plate 503 will abut against the toggle block 5055 during the rotation process, thereby driving the entire scraping assembly 505 to move along the slide groove 9. That is, the fixing post 5056 of the scraping assembly 505 moves in the slide groove 9 until the fixing post 5056 moves to one end of the slide groove 9. After the fixing post 5056 moves, the fixing post 5056 can no longer move, and the rotating plate 503 continues to rotate under the drive of the first rotating rod 502. The rotating plate 503 slides away from the arc-shaped surface of the toggle block 5055. During movement, the sliding plate 5052 compresses the first elastic element 5051. After the rotating plate 503 passes the paddle block 5055, the entire scraping assembly 505 will no longer be subject to the force of the rotating plate 503, thus the first elastic element 5051 resets, pushing the sliding plate 5052 to move on the slide rod 504 and return to its original position. During the rotation of the rotating plate 503, this process repeats, driving the fixed column 5056 to move within the slide groove 9, thereby driving the scraper 5053 to scrape the mud off the surface of the connecting plate 13. The connecting plate 13 is perpendicular to the scraper 5053, and the lower side of the scraper 5053 is close to the surface of the connecting plate 13.

[0022] Specifically, the rotation direction of the rotating plate 503 should be able to cause the sliding plate 5052 and the fixed plate 506 to compress the first elastic member 5051.

[0023] To better implement this utility model, refer to Figure 8 and Figure 9In one embodiment, the air-cooled assembly 7 includes an air-collecting box 701, a mounting frame 702, a second motor 703, fan blades 704, a first annular pipe 705, a second annular pipe 706, multiple air supply pipes 707, multiple first air outlet pipes 708, and multiple second air outlet pipes 709. The air-collecting box 701 is mounted on the top of the mud tank 1 via the mounting frame 702. The fan blades 704 are installed inside the air-collecting box 701 and are connected to the second motor 703. The air-collecting box 701 is connected to the first annular pipes 705 and the second annular pipes 706 via the air supply pipes 707. A first annular pipe 705 is disposed on the outer periphery of the first cooling box 2, and a second annular pipe 706 is disposed on the outer periphery of the second cooling box 3. The first annular pipe 705 has multiple first air outlet pipes 708 extending into the first cooling box 2, and the second annular pipe 706 has multiple second air outlet pipes 709 extending into the second cooling box 3. In this embodiment, because the diameters of the first cooling box 2 and the second cooling box 3 are different, the diameter of the first annular pipe 705 is smaller than the diameter of the second annular pipe 706 to accommodate the first and second cooling boxes 2 and 3. The second motor 703 drives the fan blades 704 to rotate, causing external air to be drawn into the air collector 701 through the through holes on its surface, thereby delivering cool air to the entire air-cooled assembly 7.

[0024] Specifically, such as Figure 2 As shown, a first baffle 14 is provided on the inner top wall of the first cooling box 2. The first baffle 14 forms an angle with the inner top wall of the first cooling box 2, that is, the first baffle 14 is trumpet-shaped, with a smaller diameter at the top and a larger diameter at the bottom. The upper end is connected to the top wall of the first cooling box 2. The first air outlet duct 708 faces inwards from the angle formed between the first baffle 14 and the inner top wall of the first cooling box 2, so that the first baffle 14 can guide the cold air in the first air outlet duct 708 to the inner wall of the first cooling box 2. The mud can fully contact the cold air for further cooling and blow away the mud on the inner wall of the first cooling box 2, reducing the amount of mud adhering. At the same time, the first baffle 14 can also prevent the first air outlet duct 708 from being blocked by mud splashing during the mud dispersal process.

[0025] Specifically, such as Figure 2As shown, a second baffle 15 is provided on the inner top wall of the second cooling box 3. The second baffle 15 forms an angle with the inner top wall of the second cooling box 3, that is, the second baffle 14 is trumpet-shaped, with a smaller diameter at the top and a larger diameter at the bottom. The upper end is connected to the top wall of the second cooling box 3, and the upper opening surrounds the connection between the first cooling box 2 and the second cooling box 3. The second air outlet duct 709 faces the angle formed between the second baffle 15 and the inner top wall of the second cooling box 3, so that the second baffle 15 can guide the cold air in the second air outlet duct 709 to the inner wall of the second cooling box 3. The mud can fully contact the cold air for further cooling, and blow away the mud on the inner wall of the second cooling box 3, reducing the amount of mud adhering and preventing the mud from adhering and causing a decrease in the heat exchange performance between the coolant and the mud in the second water tank 605 located around the outside of the second cooling box 3. At the same time, the second baffle 15 can also prevent the second air outlet duct 709 from being blocked by mud splashing during the mud dispersal process.

[0026] To prevent the outlets of the first air outlet 708 and the second air outlet 709 from being blocked by mud, it is preferable to set the air outlet of the first air outlet 708 inside the angle formed between the second baffle 15 and the inner top wall of the first cooling box 2, and set the air outlet of the second air outlet 709 inside the angle formed between the second baffle 15 and the inner top wall of the second cooling box 3.

[0027] The air-cooling component 7, in conjunction with the material-draining component 4, facilitates the drawing of external air into the air-collecting box 701, and delivers it through the air supply pipe 707 to the first annular pipe 705 and the second annular pipe 706. Finally, it enters the first cooling box 2 and the second cooling box 3 through the first air outlet pipe 708 and the second air outlet pipe 709, respectively. Under the action of the first baffle 14 and the second baffle 15, the cold air is directed to the inner walls of the first cooling box 2 and the second cooling box 3, blowing off the mud adhering to the inner walls of the first cooling box 2 and the second cooling box 3, and cooling down the mud inside the first cooling box 2 and the second cooling box 3.

[0028] To better implement this utility model, refer to Figure 10 and Figure 11In one embodiment, the cooling device further includes a liquid cooling assembly 6, which is mounted on the base 10. The liquid cooling assembly 6 includes a water storage tank 601, a water pump 602, a liquid cooling pipe 603, a first water tank 604, a second water tank 605, and a delivery pipe 606. The liquid cooling pipe 603 is S-shaped and located inside the mud tank 1. One end of the liquid cooling pipe 603 extends out of the mud tank 1 and is connected to the water pump 602 and the water storage tank 601 in sequence via the delivery pipe 606. The other end of the liquid cooling pipe 603 extends out of the mud tank 1 and is connected to the second water tank 605 via the delivery pipe 606. The second water tank 605 is connected to the first water tank 604 via the delivery pipe 606. The first water tank 604 is connected to the water storage tank 601 via the delivery pipe 606. The second water tank 605 is arranged around the outer wall of the second cooling tank 3. The first water tank 604 is located inside the first cooling tank 2, and the top of the first water tank 604 is conical. In this embodiment, cooling water can be used as the coolant. During the cooling process, water pump 602 pumps cooling water from the water storage tank 601 into the liquid cooling pipe 603, and then sequentially flows into the second water tank 605 and the first water tank 604, respectively, to exchange heat with the slurry in the second cooling tank 3 and the first cooling tank 2. The entire cooling water system can circulate within the water storage tank 601, the liquid cooling pipe 603, the first water tank 604, the second water tank 605, and the delivery pipe 606.

[0029] To better implement this utility model, refer to Figure 8 and Figure 9In one embodiment, the cooling device further includes a stirring assembly 8, which includes multiple second rotating rods 804, multiple stirring plates 801, and a second transmission assembly. Each second rotating rod 804 is installed inside the mud tank 1 and located above the liquid cooling pipe 603. Each second rotating rod 804 is provided with multiple stirring plates 801. One end of each second rotating rod 804 extends out of the mud tank 1 and is connected to the second transmission assembly. The second transmission assembly includes a driving wheel 802, a driven wheel 803, a belt 805, and multiple third gears 806. One end of each second rotating rod 804 extends out of the mud tank 1 and is connected to the corresponding third gear 806. Adjacent third gears 806 mesh with each other. One end of one second rotating rod 804 extending out of the mud tank 1 is fitted with a driven wheel 803. The driven wheel 803 is connected to the driving wheel 802 via a belt 805. The driving wheel 802 is fitted on the output shaft of the second motor 703. The output shaft of the second motor 703 drives the drive wheel 802 to rotate. The drive wheel 802 drives the driven wheel 803 to rotate via the belt 805, which in turn drives the second rotating rod 804 mounted on the driven wheel 803 to rotate. The rotation of the second rotating rod 804 drives the third gear 806 mounted on it to rotate. The meshing between the multiple third gears 806 causes each of the third gears 806 to rotate, thereby driving each of the second rotating rods 804 to rotate. This stirs and turns the mud inside the mud tank 1, allowing the mud near the liquid cooling pipe 603 to mix with the mud that has just entered the mud tank 1. This results in a more uniform temperature of the mud in the mud tank 1 and further cooling of the mud.

[0030] In this embodiment, the mud enters the first cooling tank 2, where it is cooled for the first time by the combined action of cold air and the first water tank 604 inside the first cooling tank 2. The mud then enters the second cooling tank 3, where it is cooled for the second time by the combined action of cold air and the second water tank 605 outside the second cooling tank 3. The mud then continues to enter the mud tank 1, where the stirring assembly 8 and the liquid cooling pipe 603 work together to achieve a third cooling of the mud. This process of multiple cooling of the mud improves the cooling efficiency of the mud.

[0031] The working principle of the oil drilling mud cooling device described above is as follows: The water pump 602 is started to circulate cooling water within the liquid cooling assembly 6. The second motor 703 is started, causing the fan blades 704 to rotate, drawing outside air into the air collection box 701. The air then flows through the air supply pipe 707, the first annular pipe 705, the first air outlet pipe 708, and the air supply pipe 707, the second annular pipe 706, and the second air outlet pipe 709, respectively, into the first cooling tank 2 and the second cooling tank 3 via the feed pipe 12. Under the action of the first baffle 14 and the second baffle 15, the air is blown against the inner walls of the first cooling tank 2 and the second cooling tank 3, causing the cold air to blow the slurry off the inner walls and cool the slurry inside the first cooling tank 2 and the second cooling tank 3. The second motor 703 also drives the second transmission assembly, thereby rotating the second rotating rod 804 and the stirring plate 801. The first motor 402 is started, which drives the discharge plate 404, stirring fan 405, and stirring roller 406 to rotate via the linkage rod 403. The slurry enters the first cooling tank 2 through the feed pipe 12, is dispersed at the top of the first water tank 604, and is then dispersed by the rotating stirring roller 406 and stirring fan 405, undergoing the first cooling in the first cooling tank 2. The slurry enters the second cooling tank 3 through the connection between the first cooling tank 2 and the second cooling tank 3, and is then dispersed by the rotating discharge plate 404, allowing the slurry to fully contact the cold air for a second cooling. Subsequently, part of the slurry enters the slurry tank 1 through the arc-shaped through hole, and part enters the protective box 401 through the chute 9 and then falls into the slurry tank 1. The stirring component 8 in the slurry tank 1 stirs the slurry, so that while the liquid cooling pipe 603 cools the slurry, it can also fully mix the various parts of the slurry, further making the temperature of the various parts of the slurry more uniform and the cooling efficiency higher. During the cooling process, the third motor 5011 is activated. The output shaft of the third motor 5011 drives the first gear 5012 to rotate. The first gear 5012 meshes with the second gear 5013, driving the second gear 5013 to rotate, which in turn drives the first rotating rod 502 and the rotating plate 503 to rotate. The rotating plate 503 actuates the lever 5055, causing the lever 5055 to move the slide plate 5052 on the slide rod 504 via the second elastic element 5054. At the same time, the fixed column 5056 can move within the slide groove 9. The scraper 5053 scrapes away the mud remaining on the surface of the connecting plate 13, and the mud falls into the mud tank 1 through the arc-shaped through hole. When the rotating plate 503 leaves the lever 5055, the slide plate 5052 returns to its original position under the elastic force of the first elastic element 5051. The rotating plate 503 continues to rotate, driving the next scraping component 505 to work. This process is repeated to achieve the cleaning component 5's removal of mud from the surface of the connecting plate 13. After the mud cooling process is completed, it will be discharged from the mud tank 1 through the discharge pipe 11.

[0032] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An oil drilling mud cooling apparatus, characterized by, include: The first cooling box has a feed pipe at the top; The second cooling box is located at the bottom of the first cooling box and is connected to the bottom of the first cooling box; A material dispersing assembly, which is disposed in the first cooling box and the second cooling box, is used to disperse the mud. A mud tank is located at the bottom of the second cooling tank and is connected to the second cooling tank. The mud tank is equipped with a discharge pipe. An air-cooled assembly is connected to the first cooling box and the second cooling box. The air-cooled assembly is used to send cold air into the first cooling box and the second cooling box so that the cold air exchanges heat with the mud.

2. The petroleum drilling mud cooling device of claim 1, wherein, The material dispersing assembly includes a protective box, a first motor, a linkage rod, and a dispersing component. The bottom of the protective box is connected to the mud tank. The bottom of the outer wall of the protective box is connected to the inner wall of the second cooling tank through multiple connecting plates, forming an arc-shaped through hole between every two connecting plates. The first motor is installed inside the protective box. The output end of the first motor is connected to one end of the linkage rod. The other end of the linkage rod passes through the protective box and extends into the first cooling tank from the connection port between the first and second cooling tanks. The dispersing component is installed on the linkage rod.

3. The petroleum drilling mud cooling device of claim 2, wherein, The dispersing assembly includes multiple material-draining plates, a stirring fan, and multiple stirring rollers. The portion of the linkage rod located inside the first cooling box has multiple stirring rollers evenly spaced along the circumference of the linkage rod. The stirring fan is installed on the linkage rod at the connection opening between the first and second cooling boxes. Multiple material-draining plates are evenly spaced along the circumference of the linkage rod on the lower side of the stirring fan. The material-draining plates abut against the surface of the top of the protective box.

4. The petroleum drilling mud cooling device of claim 3, wherein, It also includes a cleaning assembly, which is installed at the connection between the protective box and the mud tank. The cleaning assembly includes a first transmission assembly, a first rotating rod, a rotating plate, multiple sliding rods, multiple fixed plates, and multiple sets of scraping assemblies. The first transmission assembly is connected to one end of the first rotating rod, and the other end of the first rotating rod is connected to the rotating plate. The rotating plate is located at the connection between the protective box and the mud tank. Each set of scraping assemblies is installed on a corresponding sliding rod. Both ends of each sliding rod are installed on the inner wall of the second cooling box through the fixed plates. Each set of scraping assemblies extends through a corresponding groove located on the side wall of the second cooling box. The scraping assemblies can move within the groove under the rotation driven by the rotating plate and scrape the mud on the connecting plate.

5. The petroleum drilling mud cooling apparatus of claim 4, wherein, Each scraping assembly includes a first elastic element, a sliding plate, a scraper, a second elastic element, a lever, and a fixing post. The first elastic element is sleeved on the sliding rod, one end of which is connected to the fixing plate, and the other end is connected to the sliding plate sleeved on the sliding rod. The fixing post is located at the end of the sliding plate near the inner wall of the second cooling box. The fixing post is located in the groove, and the end of the fixing post away from the sliding plate is connected to the scraper. The end of the sliding plate near the rotating plate is connected to the lever through multiple second elastic elements. The lever can be actuated by the rotating plate.

6. The petroleum drilling mud cooling device according to claim 1 or 5, characterized in that, The air-cooling assembly includes an air-collecting box, a second motor, fan blades, a first annular pipe, a second annular pipe, multiple air supply pipes, multiple first air outlet pipes, and multiple second air outlet pipes. The air-collecting box contains fan blades, which are connected to the second motor. The air-collecting box is connected to the first and second annular pipes through the air supply pipes. The first annular pipe is located on the outer periphery of the first cooling box, and the second annular pipe is located on the outer periphery of the second cooling box. The first annular pipe has multiple first air outlet pipes extending into the first cooling box, and the second annular pipe has multiple second air outlet pipes extending into the second cooling box.

7. The oil drilling mud cooling device according to claim 6, characterized in that, The first cooling box has a first baffle on its inner top wall, which can guide the cold air in the first air outlet pipe to the inner wall of the first cooling box.

8. The oil drilling mud cooling device according to claim 6, characterized in that, The second cooling box has a second baffle on its inner top wall, which can guide the cold air in the second air outlet pipe to the inner wall of the second cooling box.

9. The oil drilling mud cooling device according to claim 1 or 8, characterized in that, It also includes a liquid cooling assembly, which includes a water storage tank, a water pump, a liquid cooling pipe, a first water tank, a second water tank, and a delivery pipe. The liquid cooling pipe is S-shaped and located inside the mud tank. One end of the liquid cooling pipe extends out of the mud tank and is connected to the water pump and the water storage tank in sequence. The other end of the liquid cooling pipe extends out of the mud tank and is connected to the second water tank. The second water tank is connected to the first water tank, and the first water tank is connected to the water storage tank. The second water tank is arranged around the outer wall of the second cooling tank, and the first water tank is located inside the first cooling tank, with a conical top.

10. The oil drilling mud cooling device according to claim 9, characterized in that, The cooling device further includes a stirring assembly, which includes multiple second rotating rods, multiple stirring plates, and a second transmission assembly. Each second rotating rod is installed inside the mud tank and located above the liquid cooling pipe. Each second rotating rod is equipped with multiple stirring rods, and one end of each second rotating rod extends out of the mud tank and is connected to the second transmission assembly.

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