A mud cooling device for petroleum drilling engineering

Abstract

The present application relates to drilling mud processing equipment technical field, especially in petroleum drilling engineering mud cooling equipment. The technical problem to be solved is that the existing mud remover cannot process the mud adhered to the inner wall of the cone cylinder, resulting in the separation effect of the mud and impurities being reduced, the performance of the mud being reduced, and the normal drilling being seriously affected. The technical scheme is that a kind of petroleum drilling engineering mud cooling equipment, including discharge hopper and conical cylinder etc.;The conical cylinder for settling mud is installed on the discharge hopper. The present application realizes the rotation of the scraper driven by the fan blade, so that the scraper can scrape off the mud and other impurities adhered to the inner wall of the conical cylinder, prevent the mud and other impurities adhered to the inner wall of the conical cylinder from affecting the separation effect of the subsequent mud, avoid affecting the subsequent drilling operation, and prevent the mud from being too thick by shielding the movable groove with the baffle, avoid reducing the performance of the mud.

Description

Technical Field

[0001] This invention relates to the field of drilling mud treatment equipment technology, and more particularly to a mud cooling device for oil drilling engineering. Background Technology

[0002] During drilling, the drill bit generates high temperatures due to high-speed rotation and friction. Mud circulation is used to cool the drill bit and prevent damage. During this cooling process, a desilter is needed to remove debris and impurities generated during drilling. If the mud is not effectively treated, its performance will deteriorate, severely impacting drilling operations. Chinese patent application CN201120128088.7 describes a hydrocyclone desilter that uses a polyurethane liner to prevent direct friction between the cone and the mud, increasing the hydrocyclone's wear resistance. The cone supports the polyurethane liner, improving its compressive strength and preventing premature damage from mud pressure due to wear. However, during mud treatment, the mud adheres to the inner wall of the cone and gradually accumulates, reducing the separation effect between mud and impurities and degrading mud performance, thus severely affecting drilling operations. Summary of the Invention

[0003] In order to overcome the shortcomings of existing desilting devices that cannot treat the mud adhering to the inner wall of the cone, resulting in a decrease in the separation effect of mud and impurities, a decrease in mud performance, and a serious impact on the normal operation of drilling, this invention provides a mud cooling device for oil drilling engineering.

[0004] The technical solution is as follows: A mud cooling device for oil drilling engineering includes a discharge hopper, a conical cylinder, an overflow pipe, and a discharge pipe; the conical cylinder for settling mud is installed on the discharge hopper; a feed pipe is provided on the side wall of the conical cylinder, and the feed pipe is located in the tangential direction of the inner wall of the conical cylinder; an overflow pipe for discharging filtered mud is rotatably connected to the upper side of the conical cylinder; a discharge pipe for discharging waste is provided on the lower side of the conical cylinder; it also includes a fixing component, fan blades, scrapers, and a protective system; a fixing component is provided inside the overflow pipe; several fan blades are provided on the overflow pipe; a scraper for scraping mud adhering to the inner wall of the conical cylinder is movably connected to the fixing component; a connecting block is provided on the scraper, which divides the scraper into upper and lower parts; a protective system is provided on the overflow pipe to prevent coarser particles from entering the overflow pipe.

[0005] Furthermore, the fixing assembly includes a first fixing ring, a fixing seat, a rotating shaft, and a swing rod; the first fixing ring is fixedly connected to the discharge hopper, and the first fixing ring is fixedly connected to the lower side of the conical cylinder; a fixing seat is fixedly connected to the left side of the discharge hopper, and the upper side of the fixing seat is rotatably connected to the overflow pipe; a rotating shaft is fixedly connected to the inner wall of the overflow pipe; a swing rod is fixedly connected to the rotating shaft, and the other end of the swing rod is rotatably connected to the connecting block of the scraper; a movable groove for the swing rod to move is provided on the overflow pipe.

[0006] Furthermore, the protection system includes a second fixed ring and a baffle; the second fixed ring is fixedly connected to the overflow pipe; a sliding groove is provided on the second fixed ring; the second fixed ring is slidably connected to a baffle for blocking the movable groove, and the baffle slides within the sliding groove; the baffle is located outside the movable groove.

[0007] Furthermore, it also includes scrapers; several scrapers are fixed to the lower side of the baffle for scraping off the mud adhering to both sides of the movable groove.

[0008] Furthermore, it also includes a diversion plate; a diversion plate for filtering the rising mud in the overflow pipe is fixed to the inner wall of the overflow pipe, and the diversion plate is located in the inner circumference of the movable trough; a number of first through holes are opened on the diversion plate.

[0009] Furthermore, the diversion plate is configured as an arc shape; a first arc surface is provided on the side of the diversion plate away from the movable groove; a second arc surface is provided on the side of the diversion plate close to the movable groove, and no holes are drilled on either the first or second arc surface.

[0010] Furthermore, it also includes a fixing rod and a limiting block; a fixing rod is fixedly connected to the lower side of the overflow pipe; a limiting block for limiting the rotation of the scraper is rotatably connected to the fixing rod; the connection point between the fixing rod and the limiting block is located at the rear of the limiting block.

[0011] Furthermore, it also includes a first cylinder, a second cylinder, a stop block, and a spiral scraper; the first cylinder is rotatably connected to the lower side of the conical cylinder; an arc-shaped groove is formed on the inner wall of the first cylinder, and the arc-shaped groove is wavy; the second cylinder is rotatably connected to the inner wall of the first cylinder; a number of protrusions are provided on the second cylinder, and the protrusions are located in the arc-shaped groove; a number of stop blocks are fixedly connected to the upper side of the first cylinder; a spiral scraper that moves up and down to scrape the mud from the lower inner wall of the conical cylinder is fixedly connected to the lower side of the second cylinder.

[0012] Furthermore, taking the direction outward from the center of the first cylinder as a reference, each stop is inclined in the direction of scraper rotation.

[0013] Furthermore, each stop is provided with a second through hole.

[0014] The beneficial effects are as follows: The present invention enables the scraper to rotate by the fan blade, so that the scraper can scrape off the mud and other impurities adhering to the inner wall of the conical cylinder, preventing the mud and other impurities adhering to the inner wall of the conical cylinder from affecting the subsequent mud separation effect and avoiding affecting the subsequent drilling operation. The baffle blocks the moving trough, thus preventing the residual mud on the scraper from being drawn into the overflow pipe along the moving trough due to the rising fluid in the middle of the conical cylinder, preventing the mud viscosity from becoming too high and avoiding a reduction in mud performance. The scraper blades on the baffle scrape the edge of the movable groove to prevent the mud adhering to the edge of the movable groove from being carried into the overflow pipe by the fluid and discharged to the outside. This further prevents the mud viscosity from being too high, avoids reducing the mud performance, prevents the mud from clogging the wellbore, and avoids causing drilling operation difficulties. The slurry in the overflow pipe is filtered twice by the diversion plate, which improves the removal of solids in the slurry and ensures the stability and durability of the slurry performance. The first cylinder drives the spiral scraper to move up and down while rotating, so that the spiral scraper can scrape off the impurities accumulated on the inner wall of the lower side of the conical cylinder. At the same time, it accelerates the discharge of impurities from the lower side of the conical cylinder, prevents impurities from accumulating, and improves the efficiency of mud removal. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the mud cooling equipment for oil drilling engineering according to the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the overflow pipe, fan blade and scraper assembly of the present invention; Figure 4 This is a cross-sectional view of the overflow pipe of the present invention; Figure 5 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 This is a three-dimensional structural diagram of the protection system of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the scraper and the drainage plate combination of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the drainage plate of the present invention; Figure 9 This is a three-dimensional structural diagram of the combination of the fixing rod and the limiting block of the present invention; Figure 10 This is a three-dimensional structural diagram of the combination of the scraper, the first cylinder, and the stop block of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the second cylinder and spiral scraper combination of the present invention; Figure 12This is a first cylindrical cross-sectional view of the present invention.

[0016] Component names and serial numbers in the diagram: 1-Discharge hopper, 2-Conical cylinder, 2001-Feed pipe, 3-Overflow pipe, 3001-Moving groove, 4-Discharge pipe, 5-Fan blade, 6-Scraper, 6001-Connecting block, 101-First fixing ring, 102-Fixed seat, 103-Drive component, 104-Rotating shaft, 105-Swing rod, 201-Second fixing ring, 202-Baffle, 203-Scraper blade, 204-Draining plate, 20401-First through hole, 20402-First curved surface, 20403-Second curved surface, 301-Fixed rod, 302-Limiting block, 303-First cylinder, 30301-Curved groove, 304-Second cylinder, 30401-Protrusion, 305-Stop block, 30501-Second through hole, 306-Spiral scraper. Detailed Implementation

[0017] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Example 1 like Figures 2-5 As shown, a mud cooling device for oil drilling engineering includes a discharge hopper 1, a conical cylinder 2, an overflow pipe 3, and a discharge pipe 4. The conical cylinder 2 is installed on the discharge hopper 1. A feed pipe 2001 is provided on the side wall of the conical cylinder 2, and the feed pipe 2001 is located in the tangential direction of the inner wall of the conical cylinder 2. The overflow pipe 3 is rotatably connected to the upper side of the conical cylinder 2. The discharge pipe 4 is provided on the lower side of the conical cylinder 2. First, the mud is introduced into the conical cylinder 2 through the feed pipe 2001 on the side wall of the conical cylinder 2, so that the mud spirals in along the inner wall of the conical cylinder 2. The coarser particles in the mud spiral down along the inner wall of the conical cylinder 2 under the action of centrifugal force and gravity, and are discharged from the discharge pipe 4 on the lower side and fall onto the discharge hopper 1. Then, it is separated again by an external fine-mesh vibrating screen. The remaining mud that has settled is discharged from the overflow pipe 3 on the upper side. It also includes a fixing component, fan blades 5, scraper blades 6, and a protection system; the fixing component is installed inside the overflow pipe 3; three fan blades 5 are installed on the overflow pipe 3; the scraper blades 6 are movably connected to the fixing component; the scraper blades 6 are equipped with connecting blocks 6001, which are connected by torsion springs to divide the scraper blades 6 into upper and lower parts; the overflow pipe 3 is equipped with a protection system; firstly, the mud entering from the feed pipe 2001 impacts the fan blades 5, thereby driving the overflow pipe 3 to rotate, which in turn drives the scraper blades 6 to rotate, so that the scraper blades 6 scrape off the mud and other impurities adhering to the inner wall of the conical cylinder 2, preventing the mud and other impurities adhering to the inner wall of the conical cylinder 2 from affecting the subsequent mud separation effect and affecting the subsequent drilling operations.

[0019] The fixing assembly includes a first fixing ring 101, a fixing seat 102, a rotating shaft 104, and a swing rod 105; the first fixing ring 101 is fixedly connected to the discharge hopper 1, and the first fixing ring 101 is fixedly connected to the lower side of the conical cylinder 2; the fixing seat 102 is fixedly connected to the left side of the discharge hopper 1, and the upper side of the fixing seat 102 is rotatably connected to the overflow pipe 3; the rotating shaft 104 is fixedly connected to the inner wall of the overflow pipe 3; the swing rod 105 is fixedly connected to the rotating shaft 104, and the other end of the swing rod 105 is rotatably connected to the connecting block 6001 of the scraper 6; the overflow pipe 3 is provided with a movable groove 3001.

[0020] It also includes a drive component 103; the drive component 103 is fixedly connected to the inner wall of the overflow pipe 3, and the drive component 103 is an electric push rod; the output end of the drive component 103 is slidably connected to the swing rod 105; by controlling the extension and retraction of the drive component 103, the upper side of the swing rod 105 is driven to swing around the rotating shaft 104, which in turn drives the scraper 6 to swing around the rotating shaft 104 as the center, thereby realizing the extension and retraction of the scraper 6, preventing the scraper 6 from extending and affecting the settling efficiency of the mud in the conical cylinder 2 when cleaning is not required.

[0021] The following is a detailed description of the process of scraping the mud off the side wall of the conical cylinder 2: First, the mud enters the conical cylinder 2 through the feed pipe 2001 on the side wall of the conical cylinder 2. Since the feed pipe 2001 is located in the tangential direction of the inner wall of the conical cylinder 2, the mud falls spirally along the inner wall of the conical cylinder 2. The coarser particles in the mud sink spirally along the inner wall of the conical cylinder 2 under the action of centrifugal force and gravity, and are discharged from the discharge pipe 4 on the lower side and fall onto the discharge hopper 1. Then, it is separated again by the external fine-mesh vibrating screen. The remaining mud that has settled is discharged from the overflow pipe 3 on the upper side. During this process, some mud will stick to the inner wall of the conical cylinder 2. When too much mud accumulates on the inner wall of the conical cylinder 2, it will reduce the mud separation effect. Therefore, this equipment uses intermittent control drive component 103 to drive the swing arm 105 to rotate. The shaft 104 rotates around the center, causing the swing arm 105 to drive the scraper 6 from the middle of the conical cylinder 2 to gradually approach the inner wall of the conical cylinder 2 within the movable groove 3001, until the scraper 6 contacts the inner wall of the conical cylinder 2. At the same time, the fan blades 5 on the overflow pipe 3 are driven to rotate by the impact of the mud rotating in a spiral shape in the conical cylinder 2, which in turn drives the scraper 6 to rotate. This causes the scraper 6 to scrape off the mud adhering to the inner wall of the conical cylinder 2, preventing the mud and other impurities adhering to the inner wall of the conical cylinder 2 from affecting the subsequent mud separation effect. After scraping is completed, the drive component 103 is controlled to retract, driving the scraper 6 back to the middle position of the conical cylinder 2, preventing the scraper 6 from blocking the mud rotating in a spiral shape at the outer edge of the conical cylinder 2, thus avoiding affecting the mud settling effect.

[0022] Example 2 Based on Example 1, such as Figures 6-8As shown, the protective system includes a second fixed ring 201 and a baffle 202; the second fixed ring 201 is fixedly connected to the overflow pipe 3; a sliding groove is provided on the second fixed ring 201; the baffle 202 is slidably connected to the second fixed ring 201, and the baffle 202 slides in the sliding groove; the baffle 202 is located outside the movable groove 3001; when it is necessary to scrape the inner wall of the conical cylinder 2, the output end of the control drive 103 gradually drives the swing rod 105 to swing upward, and the swing rod 105 gradually squeezes the lower side of the baffle 202, so that the baffle 202 gradually slides upward in the sliding groove. After scraping is completed, the output end of the control drive 103 gradually drives the swing arm 105 to swing downward. At this time, the baffle 202 slides downward in the sliding groove along with the swing arm 105 due to gravity until the output end of the drive 103 can no longer retract. At this time, the baffle 202 has completely blocked the movable groove 3001, and the upper part of the scraper 6 is close to the outer periphery of the baffle 202, thereby preventing the residual mud on the scraper 6 from flowing into the overflow pipe 3 along the movable groove 3001 due to the action of the rising fluid in the middle of the conical cylinder 2, thus avoiding the reduction of mud performance and the mud viscosity being too high, which would prevent normal circulation.

[0023] It also includes scraper blades 203; two scraper blades 203 are fixedly connected to the lower side of the baffle 202; when the scraper blade 6 scrapes the mud on the inner wall of the conical cylinder 2, the movable groove 3001 is not blocked by the baffle 202. Therefore, some mud will gradually adhere to the edge of the movable groove 3001 under the action of the fluid rotation of the conical cylinder 2 and gradually accumulate. When the scraper blade 6 finishes scraping and is retracted, the baffle 202 moves downward with the swing rod 105 and scrapes the edge of the movable groove 3001 by the scraper blades 203 on the baffle 202, preventing the mud adhering to the edge of the movable groove 3001 from being carried into the overflow pipe 3 by the fluid and discharged to the outside, further avoiding the reduction of mud performance, resulting in excessive mud viscosity, clogging of the wellbore, and causing drilling operation difficulties.

[0024] It also includes a diversion plate 204; the diversion plate 204 is fixedly connected to the inner wall of the overflow pipe 3, and the diversion plate 204 is located in the inner perimeter of the movable groove 3001; the diversion plate 204 is provided with a number of first through holes 20401; the mud in the overflow pipe 3 is filtered twice through the diversion plate 204 to improve the removal effect of solids in the mud and ensure the stability and durability of the mud performance.

[0025] The diversion plate 204 is curved; a first curved surface 20402 is provided on the side of the diversion plate 204 away from the movable trough 3001; a second curved surface 20403 is provided on the side of the diversion plate 204 near the movable trough 3001, and neither the first curved surface 20402 nor the second curved surface 20403 has holes drilled on them; when the scraper 6 scrapes the inner wall of the conical cylinder 2, the movable trough 3001 is in the open state, and some of the unsettled sludge outside the overflow pipe 3 enters the overflow pipe 3 through the movable trough 3001, and then the unsettled and settled sludge is filtered again by the diversion plate 204 in the overflow pipe 3, thereby reducing the amount of sludge. The impurity content in the slurry is reduced. At the same time, when the slurry flow rate in the overflow pipe 3 increases, some slurry located below the diversion plate 204 overflows in the opposite direction along the lower side of the diversion plate 204 and flows along the first curved surface 20402 to the second curved surface 20403. Then, it rushes out along the second curved surface 20403 to the lower side of the baffle 202 and the opening of the movable groove 3001. This allows the slurry overflowing in the opposite direction to block the slurry around the overflow pipe 3 and to flush away the impurities adhering to the lower side of the baffle 202 and the opening of the movable groove 3001. The slurry that is flushed down settles again with the surrounding slurry, further improving the slurry treatment effect.

[0026] Example 3 Based on Examples 1-2, such as Figure 1 , Figure 2 and Figures 9-12 As shown, it also includes a fixing rod 301 and a limiting block 302; the fixing rod 301 is fixedly connected to the lower side of the overflow pipe 3; the limiting block 302 is connected to the fixing rod 301 by a torsion spring; as shown Figure 9 As shown, the connection point between the fixing rod 301 and the limiting block 302 is located at the rear of the limiting block 302; when the scraper 6 finishes scraping and is retracted, the lower part of the scraper 6 gradually approaches the limiting block 302 and presses against the middle of the limiting block 302, while the lower part of the scraper 6 gradually becomes vertical. Since the fixing rod 301 and the limiting block 302 are connected by a torsion spring, and as... Figure 9 As shown, the connection point between the fixed rod 301 and the limiting block 302 is located at the rear of the limiting block 302. With a top-down view as a reference, the limiting block 302 rotates clockwise, causing the rear side of the limiting block 302 to press against the lower part of the scraper 6. Since the swing rod 105 is rotatably connected to the scraper 6, the scraper 6 rotates clockwise, and the scraper 6 gradually approaches the position of the movable groove 3001. At the same time, the scraper blade of the scraper 6 is tilted in the direction of rotation, thereby reducing the resistance force generated by the scraper 6 when the mud in the conical cylinder 2 rotates in a spiral shape, and avoiding affecting the centrifugal effect of the mud.

[0027] It also includes a first cylinder 303, a second cylinder 304, a stop block 305, and a spiral scraper 306; the first cylinder 303 is rotatably connected to the lower side of the conical cylinder 2; an arc-shaped groove 30301 is formed on the inner wall of the first cylinder 303, and the arc-shaped groove 30301 is wavy; the second cylinder 304 is rotatably connected to the inner wall of the first cylinder 303; two symmetrical protrusions 30401 are provided on the second cylinder 304, and the protrusions 30401 are located in the arc-shaped groove 30301; several stop blocks 305 are fixed to the upper side of the first cylinder 303; a spiral scraper 306 is fixed to the lower side of the second cylinder 304; as the mud removal process proceeds, large impurities gradually slide down the inner wall of the conical cylinder 2. Since the lower part is mostly viscous impurities with low water content, the impurities will gradually accumulate on the lower inner wall of the conical cylinder 2, resulting in a slow flow rate and seriously affecting the discharge of impurities above. When the lower part of the scraper 6 is in a vertical position, the lower side of the scraper 6 contacts the stop block 305 on the first cylinder 303. Looking at the pseudo-reference from above, the overflow pipe 3 drives the scraper 6 to rotate clockwise, causing the lower side of the scraper 6 to press against the stop block 305. Simultaneously, the stop block 305 rotates clockwise, which in turn drives the first cylinder 303 to rotate clockwise. This causes the arc groove 30301 on the first cylinder 303 to drive the protrusion 30401 on the second cylinder 304 to rotate slightly. As the crests and troughs of the arc groove 30301 move up and down, the spiral scraper 306 moves up and down while rotating, scraping away impurities accumulated on the lower inner wall of the conical cylinder 2. Simultaneously, its up-and-down movement accelerates the discharge of impurities from the lower side of the conical cylinder 2, preventing impurity accumulation and ensuring efficient mud removal.

[0028] With the center of the first cylinder 303 pointing outward as a reference, each stop 305 is inclined in the direction of rotation of the scraper 6. By inclining the stop 305, the impurities sinking in the conical cylinder 2 are guided, and the scraper 6 is more easily engaged with the stop 305. This prevents the scraper 6 from slipping when impurities accumulate on the first cylinder 303, thus preventing the first cylinder 303 from rotating and affecting subsequent work.

[0029] Each stop 305 is provided with a second through hole 30501; the second through hole 30501 prevents impurities from accumulating at the bend of the stop 305, and at the same time, the centripetal force generated by the rotation of the first cylinder 303 accelerates the flow of impurities out of the second through hole 30501, further preventing impurities from accumulating and causing blockage.

[0030] It should be understood that the above description is for illustrative purposes only and is not intended to limit the invention. Those skilled in the art will understand that variations of the invention are included within the scope of the claims herein.

Claims

1. A mud cooling device for oil drilling engineering, comprising a discharge hopper (1), a conical cylinder (2), an overflow pipe (3), and a discharge pipe (4); a conical cylinder (2) for settling mud is installed on the discharge hopper (1); a feed pipe (2001) is provided on the side wall of the conical cylinder (2), and the feed pipe (2001) is located in the tangential direction of the inner wall of the conical cylinder (2); an overflow pipe (3) for discharging filtered mud is rotatably connected to the upper side of the conical cylinder (2); a discharge pipe (4) for discharging waste is provided on the lower side of the conical cylinder (2); characterized in that, It also includes a fixing component, fan blades (5), scraper (6) and a protective system; the fixing component is installed inside the overflow pipe (3); several fan blades (5) are installed on the overflow pipe (3); a scraper (6) for scraping the mud adhering to the inner wall of the conical cylinder (2) is movably connected to the fixing component; a connecting block (6001) is installed on the scraper (6), which divides the scraper (6) into upper and lower parts; a protective system for preventing coarser particles from entering the overflow pipe (3) is installed on the overflow pipe (3); The fixing assembly includes a first fixing ring (101), a fixing seat (102), a rotating shaft (104), and a swing rod (105); the first fixing ring (101) is fixedly connected to the discharge hopper (1), and the first fixing ring (101) is fixedly connected to the lower side of the conical cylinder (2); the fixing seat (102) is fixedly connected to the left side of the discharge hopper (1), and the upper side of the fixing seat (102) is rotatably connected to the overflow pipe (3); the rotating shaft (104) is fixedly connected to the inner wall of the overflow pipe (3); the swing rod (105) is fixedly connected to the rotating shaft (104), and the other end of the swing rod (105) is rotatably connected to the connecting block (6001) of the scraper (6); the overflow pipe (3) is provided with a movable groove (3001) for the swing rod (105) to move; The protective system includes a second fixed ring (201) and a baffle (202); the second fixed ring (201) is fixedly connected to the overflow pipe (3); a sliding groove is provided on the second fixed ring (201); the second fixed ring (201) is slidably connected to a baffle (202) for blocking the movable groove (3001), and the baffle (202) slides in the sliding groove; the baffle (202) is located outside the movable groove (3001).

2. The mud cooling equipment for oil drilling engineering according to claim 1, characterized in that, It also includes scrapers (203); several scrapers (203) are fixed to the lower side of the baffle (202) for scraping off the mud adhering to both sides of the movable groove (3001).

3. The mud cooling equipment for oil drilling engineering according to claim 1, characterized in that, It also includes a diversion plate (204); a diversion plate (204) for filtering the rising mud in the overflow pipe (3) is fixedly connected to the inner wall of the overflow pipe (3), and the diversion plate (204) is located in the inner perimeter of the movable trough (3001); a number of first through holes (20401) are opened on the diversion plate (204).

4. The mud cooling equipment for oil drilling engineering according to claim 3, characterized in that, The diversion plate (204) is set in an arc shape; a first arc surface (20402) is provided on the side of the diversion plate (204) away from the movable groove (3001); a second arc surface (20403) is provided on the side of the diversion plate (204) close to the movable groove (3001), and no holes are drilled on the first arc surface (20402) and the second arc surface (20403).

5. The mud cooling equipment for oil drilling engineering according to claim 1, characterized in that, It also includes a fixing rod (301) and a limiting block (302); the fixing rod (301) is fixedly connected to the lower side of the overflow pipe (3); the limiting block (302) for limiting the rotation of the scraper (6) is rotatably connected to the fixing rod (301); the connection point between the fixing rod (301) and the limiting block (302) is located in the middle and rear of the limiting block (302).

6. The mud cooling equipment for oil drilling engineering according to claim 1, characterized in that, It also includes a first cylinder (303), a second cylinder (304), a stop block (305), and a spiral scraper (306); the first cylinder (303) is rotatably connected to the lower side of the conical cylinder (2); an arc groove (30301) is provided on the inner wall of the first cylinder (303), and the arc groove (30301) is wavy; the second cylinder (304) is rotatably connected to the inner wall of the first cylinder (303); a number of protrusions (30401) are provided on the second cylinder (304), and the protrusions (30401) are located in the arc groove (30301); a number of stop blocks (305) are fixedly connected to the upper side of the first cylinder (303); a spiral scraper (306) that moves up and down to scrape the mud from the lower inner wall of the conical cylinder (2) is fixedly connected to the lower side of the second cylinder (304).

7. A mud cooling device for oil drilling engineering according to claim 6, characterized in that, With the center of the first cylinder (303) outward as the reference, each stop (305) is inclined in the direction of rotation of the scraper (6).

8. A mud cooling device for oil drilling engineering according to claim 6, characterized in that, Each stop (305) is provided with a second through hole (30501).

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