Slurry treatment device applied to geological drilling

Abstract

The invention belongs to the technical field of slurry treatment equipment, and particularly relates to a slurry treatment device applied to geological drilling, which comprises a steel frame, a slurry inlet main box, a separation box, a vibrating screen, a bottom slurry hopper, a slurry pump, a cyclone, a top slurry hopper and a slurry inlet auxiliary box, the slurry inlet main box is located on one side of the steel frame, the separation box conducts primary treatment on slurry entering the slurry inlet main box, and the bottom slurry hopper is arranged below the vibrating screen. The vibrating screen conducts coarse screening on slurry in the slurry inlet main box, and the slurry subjected to coarse screening enters the bottom slurry hopper. The device is provided with a three-stage separation system, particles with different particle sizes are covered, rapid and efficient solid-liquid separation is achieved through the separation box preset in advance, even mud which is not completely flocculated can be directly put into the device to be treated, the mud forms a self-circulation and double-treatment closed-loop treatment system in the device, and the treatment efficiency is improved. Impurities and water in the slurry are effectively removed, and the quality and the utilization rate of the slurry are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mud processing equipment, and in particular relates to a mud processing device used in geological drilling. Background Art

[0002] In engineering fields such as geological drilling, oil extraction, mining exploration, and tunnel construction, mud (drilling fluid) serves as a crucial engineering medium, fulfilling multiple critical functions, including cooling the drill bit, carrying cuttings, stabilizing the wellbore, and balancing formation pressure. As modern engineering projects move deeper and into more complex formations, higher demands are placed on mud performance and processing technologies. However, waste mud contains large amounts of rock cuttings, drill cuttings, clay particles, and various chemical additives, posing an increasingly prominent challenge to its disposal and becoming a significant constraint on the environmental and economic viability of these projects.

[0003] Traditional sludge treatment technology relies primarily on vibrating screen separation and natural sedimentation. As the first treatment step, the vibrating screen achieves initial solid-liquid separation through mechanical vibration, but its treatment efficiency is limited by the mesh size of the screen, significantly reducing the separation efficiency for fine particles with small particle sizes. Subsequent sedimentation tank treatment not only occupies a large area but also has a long treatment cycle, often requiring several days to achieve the desired solid-liquid separation effect. This treatment method has several significant technical drawbacks: First, to shorten the construction period or reduce costs, mud settling pits are often built directly on construction sites. However, due to the short design cycle, the pre-treatment of the mud generally fails to achieve sufficient flocculation and sedimentation. This results in a distribution of mud with varying particle sizes during the treatment process, and vibrating screens struggle to process mud with varying particle size distributions. In actual projects, the particle size distribution of drilling debris ranges widely, from a few millimeters to several microns. Although some projects use multiple vibrating screens in series, this configuration significantly increases equipment complexity and energy consumption. Existing treatment systems lack overall optimization, and most construction sites employ a patchwork equipment layout with a lack of organic connection between treatment units. For example, equipment such as vibrating screens, cyclones, and filter presses often operate independently, increasing material transfer steps and leading to repeated processing. This discrete processing model results in low system efficiency, increased energy consumption, and difficulty in achieving precise separation and recycling of mud components. Summary of the Invention

[0004] The purpose of the present invention is to provide a mud treatment device for geological drilling, which has a three-stage separation system, covers particles of different particle sizes, and realizes fast and efficient solid-liquid separation through a pre-set separation box. Even mud with incomplete flocculation can be directly put into treatment. The mud forms a self-circulating, dual-treatment closed-loop treatment system inside the equipment, effectively removing impurities and moisture in the mud, and improving the quality and utilization rate of the mud.

[0005] The technical solutions adopted by the present invention are as follows: The slurry is passed through a slurry collecting tank and a separator, and the slurry is passed through a slurry collecting tank, and the slurry is collected by a slurry collecting device, wherein the slurry is collected by a slurry collecting device and the slurry is collected by a slurry collecting device.

[0006] In a preferred embodiment, filter strips arranged at equal intervals are provided inside the slurry inlet main box to form a filtering and separating unit. The filter strips are small at the top and gradually become larger at the bottom. The separating unit separates the pretreated flocculent slurry into the interior of the separation box. A slurry discharge port is provided on one side of the slurry inlet main box facing the separation box; A first row of pulp drums is installed on the side of the bottom of the pulp inlet main box facing the vibrating screen.

[0007] In a preferred embodiment, a vibration motor is installed on the top of the vibrating screen, and an upper screen plate and a lower screen plate are provided on the vibrating screen. A window is provided on the side of the vibrating screen facing the pulp inlet box. The window corresponds to the position of the lower screen plate, and the first row of pulp tubes is set corresponding to the window, and the mud in the pulp inlet box is discharged into the lower screen plate of the vibrating screen for primary screening.

[0008] In a preferred embodiment, a first pipeline is provided at one end of the slurry pump, and a second pipeline is provided at the other end, and the second pipeline is connected to the bottom mud hopper.

[0009] In a preferred embodiment, the cyclone includes a first interface and a second interface, the first pipe is connected to the first interface, the mud after coarse screening inside the bottom mud hopper is discharged into the cyclone through the first interface, and the mud to be separated is discharged from the bottom nozzle of the cyclone or the second interface of the cyclone according to the particle diameter.

[0010] In a preferred embodiment, a bracket is provided above the top mud hopper, and a baffle is provided on the bracket at a position corresponding to the bottom nozzle of the cyclone; A second row of slurry tubes is arranged at the bottom of the top mud hopper, and the second row of slurry tubes is communicated with the slurry feed auxiliary box.

[0011] In a preferred embodiment, the bottom of the slurry feed auxiliary box protrudes downward to form a slurry discharge nozzle. The slurry discharge nozzle of the slurry feed auxiliary box is located at the upper screen plate, and the slurry in the cyclone is discharged onto the upper screen plate through the slurry feed auxiliary box for fine screening.

[0012] In a preferred embodiment, the separation box includes a box body, the inner wall of the box body is relatively raised to form a narrow opening for the water body to pass through, a mud outlet hole is opened on one end surface of the box body, and a fixing frame is further provided on the outer wall of the box body on one side of the mud outlet hole, and a movable sealing disk and a pressure spring are further provided between the fixing frame and the box body, one end of the pressure spring abuts against the fixing frame, and the other end abuts against the movable sealing disk, and the diameter of the movable sealing disk is larger than the diameter of the mud outlet hole; When mud passes through the mud outlet hole, it squeezes the movable sealing disc and is discharged outside the box, and the pressure spring is compressed; When there is no mud inside the box, the pressure spring releases pressure and the movable sealing disk closes the box.

[0013] In a preferred embodiment, a driving motor is fixed to one end of the box body away from the fixed frame, and an auger blade is installed at the output end of the driving motor. The end of the auger blade passes through the mud outlet hole and the movable sealing disk and is rotatably mounted on the fixed frame.

[0014] In a preferred embodiment, a U-shaped screen and an O-shaped screen are further installed inside the box. The O-shaped screen is arranged close to the fixed frame. When the mud is discharged into the O-shaped screen through the auger blade, the movable sealing disk is squeezed accordingly.

[0015] The technical effects achieved by the present invention are: In the present invention, a three-stage separation system is formed by arranging and combining a vibrating screen, a cyclone and a spiral extruder. The system covers particles of different sizes and can adapt to muds with different particle size distributions. Rapid and efficient solid-liquid separation is achieved through a pre-set separation box. Even mud with incomplete flocculation can be directly put into treatment. The various treatment units are organically connected to form a continuous treatment process, so that the mud forms a self-circulating, dual-treatment closed-loop treatment system inside the equipment.

[0016] In the present invention, by adding a separation box, it is suitable for large-scale pre-mud treatment without frequent shutdown, and the mud after preliminary treatment in the separation box is discharged into the slurry inlet sub-box through an external mud pump for reprocessing, forming a dual, multi-stage treatment structure, so that the mud can smoothly and continuously enter the next stage of the treatment device. The mud treatment device can more effectively remove impurities and moisture in the mud, and improve the quality and utilization rate of the mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the separation structure of the present invention; Figure 3 It is a structural diagram of the pulp inlet main box in the present invention; Figure 4 It is a structural schematic diagram of the vibrating screen in the present invention; Figure 5 It is a structural diagram of the bottom mud hopper and slurry pump in the present invention; Figure 6 This is a structural diagram of the top mud hopper and the slurry inlet auxiliary box in the present invention; Figure 7 It is a structural diagram of the separation box in the present invention; Figure 8 It is a structural diagram of the box body in the present invention; Figure 9 It is a schematic diagram of the mud trend structure in the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Steel frame; 2. Slurry inlet main box; 201. Filter strips; 202. Slurry discharge port; 203. First row of slurry barrels; 3. Vibrating screen; 301. Vibrating motor; 302. Upper sieve plate; 303. Lower sieve plate; 304. Window; 4. Bottom mud hopper; 5. Slurry pump; 501. First pipeline; 502. Second pipeline; 6. Cyclone; 601. First interface; 602. Second interface; 7. Top mud hopper; 701. Bracket; 702. Baffle; 703. Second row of slurry tubes; 8. Slurry inlet auxiliary box; 801. Slurry discharge nozzle; 9. Separation box; 901. Box body; 903. Narrow mouth; 904. Mud discharge hole; 905. Drive motor; 906. Auger blade; 907. U-shaped screen; 908. O-shaped screen; 909. Fixed frame; 910. Pressure spring; 911. Movable sealing disk. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive of other embodiments.

[0022] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0023] Please see the attached Figure 1 、 Figure 2 or Figure 9 As shown, the present invention provides a mud processing device for geological drilling, comprising a steel frame 1, a slurry feed box 2, a separation box 9, a vibrating screen 3, a bottom mud hopper 4, a slurry pump 5, a cyclone 6, a top mud hopper 7, and a slurry feed auxiliary box 8. The steel frame 1 is used to load components for processing mud. The slurry feed box 2 is located on one side of the steel frame 1. The separation box 9 performs preliminary processing on the mud entering the slurry feed box 2. The bottom mud hopper 4 is arranged below the vibrating screen 3. The vibrating screen 3 performs coarse screening on the mud in the slurry feed box 2. The mud after coarse screening is discharged. The slurry enters the bottom mud hopper 4, which is used to transport the mud in the bottom mud hopper 4. The cyclone 6 is arranged above the top mud hopper 7. The top mud hopper 7 is arranged on the top of the steel frame 1. The slurry pump 5 transports the mud in the bottom mud hopper 4 to the inside of the cyclone 6. The slurry inlet auxiliary box 8 is located between the slurry inlet main box 2 and the vibrating screen 3. The top mud hopper 7 enters the vibrating screen 3 through the slurry inlet auxiliary box 8 and is discharged to the outside after being processed by the vibrating screen 3. Among them, the mud after preliminary treatment in the separation box 9 is discharged into the slurry inlet auxiliary box 8 through the mud pump for reprocessing.

[0024] Specifically, when the mud is extracted from the mud pit, a flocculant is used to flocculate the mud for easy processing. The mud after flocculation can adsorb pollutants and accelerate sedimentation, which is convenient for subsequent dehydration and solid-liquid separation procedures.

[0025] Please see the attached Figure 3As shown, the interior of the pulp inlet box 2 is provided with filter strips 201 arranged at equal intervals to form a filtering and separation unit. The top of the filter strip 201 is small and the bottom gradually becomes larger. The separation unit separates the pretreated flocculent slurry into the interior of the separation box 9. A pulp discharge port 202 is provided on the side of the pulp inlet box 2 facing the separation box 9, and a first row of pulp barrels 203 is installed on the bottom of the pulp inlet box 2 facing the vibrating screen 3.

[0026] Please see the attached Figure 4 As shown, a vibration motor 301 is installed on the top of the vibrating screen 3, and an upper sieve plate 302 and a lower sieve plate 303 are also provided on the vibrating screen 3. A window 304 is provided on the side of the vibrating screen 3 facing the pulp inlet box 2, and the window 304 corresponds to the position of the lower sieve plate 303, and the first row of pulp barrels 203 is set corresponding to the window 304, so that the mud in the pulp inlet box 2 is discharged into the lower sieve plate 303 of the vibrating screen 3 for primary screening.

[0027] Specifically, the mesh openings of the upper sieve plate 302 are smaller than those of the lower sieve plate 303. By designing the sieves with different apertures, fine classification of mud particles is achieved. The lower sieve plate 303 primarily removes larger particles and impurities, while the upper sieve plate 302 further refines the process, effectively separating fine particles and water from the mud. This two-stage processing structure not only improves mud processing efficiency but also ensures the quality of the treated mud, laying the foundation for subsequent mud drying and recycling.

[0028] Specifically, by arranging filter strips 201 inside the slurry inlet box 2, a preliminary filtration effect is achieved, and dual treatment is realized by separating the space. The mud passing through the slurry inlet box 2 is separated and filtered according to the particle size, a part of which enters the vibrating screen 3 for primary screening, and the other part enters the separation box 9. Among them, although the flocculated mud is dehydrated, it is still water-affinity and fluid. Through the special design of the filter strips 201 with a small top and a gradually larger bottom, some of the insufficiently flocculated mud can be intercepted inside the separation box 9 for solid-liquid separation treatment, and the flocculated mud is driven by water through the gaps between the filter strips 201 to enter the vibrating screen 3. In the vibrating screen 3, the mud is screened by the upper screen plate 302 to intercept larger solid particles. Based on the dual treatment design of the vibrating screen 3 and the separation box 9 mentioned above, the efficiency of the mud treatment is improved and the quality of the mud treatment is guaranteed.

[0029] Please see the attached Figure 5 or Figure 6As shown, a first pipe 501 is provided at one end of the slurry pump 5, and a second pipe 502 is provided at the other end. The second pipe 502 is connected to the bottom mud bucket 4. The cyclone 6 includes a first interface 601 and a second interface 602. The first pipe 501 is connected to the first interface 601. The mud after coarse screening inside the bottom mud bucket 4 is discharged into the cyclone 6 through the first interface 601. The mud to be separated is discharged from the bottom nozzle of the cyclone 6 or the second interface 602 of the cyclone 6 according to the particle diameter.

[0030] Specifically, when the mud enters the cyclone 6 through the first pipe 501, the mud enters the interior of the cyclone 6 tangentially at high pressure, forming a high-speed rotating flow field. Under the action of centrifugal force, the mud components with high density are thrown to the wall and spiral downward to the bottom nozzle, while the mud components with low density gather toward the center, forming an internal vortex and discharged from the second interface 602 at the top. The mud discharged from the second interface 602 is collected from the external mud tank for subsequent processing.

[0031] Please see the attached Figure 6 As shown, a bracket 701 is mounted above the top mud hopper 7, and a baffle 702 is provided on the bracket 701 at a position corresponding to the nozzle at the bottom of the cyclone 6. A second row of slurry tubes 703 is installed at the bottom of the top mud hopper 7. The second row of slurry tubes 703 are connected to the slurry feed auxiliary box 8. The bottom of the slurry feed auxiliary box 8 protrudes and extends downward to form a slurry discharge protrusion 801. The slurry discharge protrusion 801 of the slurry feed auxiliary box 8 is located at the position of the upper screen plate 302, and the mud in the cyclone 6 is discharged onto the upper screen plate 302 through the slurry feed auxiliary box 8 for fine screening.

[0032] More specifically, the baffle 702 on the top mud hopper 7 can be made of a flexible curtain of rubber or a hard material of PVC, which can swing to adapt to the impact of mud. It can also be made of highly wear-resistant polyurethane material, which is suitable for sand-containing mud, or stainless steel, which is more suitable for corrosive mud or high-temperature environment. Among them, the baffle 702 can prevent mud from splashing, block high-pressure mud, such as the random splashing of the bottom flow of the nozzle of the cyclone 6, to avoid contaminating the working area or injuring the operator, while also reducing mud contamination of equipment, ground or personnel, and can directional guide the splashing mud to a designated collection point, the inside of the top mud hopper 7, for subsequent processing or recycling.

[0033] More specifically, the slurry discharge spout 801 of the slurry inlet auxiliary box 8 corresponds to the position of the upper screen plate 302, ensuring that the mud can be accurately discharged onto the screen plate, so that the mud inside the top mud bucket 7 is discharged to the upper screen plate 302 of the vibrating screen 3 for the final processing step. The upper screen plate 302 and the lower screen plate 303 of the vibrating screen 3 form a two-level processing structure, which can further subdivide the mud particles and accelerate the mud dehydration process, which is beneficial to the subsequent mud drying process and the recycling of the mud.

[0034] Please see the attached Figure 7 or Figure 8 As shown, the separation box 9 includes a box body 901, the inner wall of the box body 901 is relatively convex, forming a narrow opening 903 for the water body to pass through, and a mud outlet hole 904 is provided on one end face of the box body 901. A fixing frame 909 is also provided on the outer wall of the box body 901 on one side of the mud outlet hole 904. A movable sealing disk 911 and a pressure spring 910 are also provided between the fixing frame 909 and the box body 901. One end of the pressure spring 910 abuts against the fixing frame 909, and the other end abuts against the movable sealing disk 911. The diameter of the movable sealing disk 911 is larger than the mud outlet hole 904 in diameter, a driving motor 905 is fixed to one end of the box body 901 away from the fixed frame 909, an auger blade 906 is installed at the output end of the driving motor 905, the end of the auger blade 906 passes through the mud outlet hole 904 and the movable sealing disk 911, and is rotatably installed on the fixed frame 909, a U-shaped screen 907 and an O-shaped screen 908 are also installed inside the box body 901, and the O-shaped screen 908 is arranged close to the fixed frame 909, when the mud is discharged into the inside of the O-shaped screen 908 through the auger blade 906, the movable sealing disk 911 is squeezed accordingly.

[0035] Based on the above, when the drive motor 905 is started, it rotates in the screen along with the rotation of the auger blade 906, pushing the material forward. As the pitch of the spiral shaft on the auger blade 906 gradually becomes smaller, the spatial compression force on the material increases, and the liquid is squeezed out, continuously pushing the mud in the U-shaped screen 907 into the O-shaped screen 908, while the water flows to the narrow mouth 903 through the gaps between the screens. The mud is retained in the screen drum and continues to be transported forward until it passes through the mud outlet 904 and is discharged to the outside of the box body 901. By adding a separation box 9, it is suitable for large-scale pre-mud treatment without frequent shutdowns, and the mud after preliminary treatment in the separation box 9 is re-discharged into the slurry inlet sub-box 8 through an external mud pump for reprocessing, forming a dual, multi-stage treatment structure, so that the mud can smoothly and continuously enter the next stage of the treatment device. The mud treatment device can more effectively remove impurities and moisture in the mud, and improve the quality and utilization rate of the mud.

[0036] Among them, when mud passes through the mud outlet hole 904, the movable sealing disk 911 is squeezed and discharged to the outside of the box body 901, and the pressure spring 910 is compressed. When there is no mud inside the box body 901, the pressure spring 910 is released and the movable sealing disk 911 closes the box body 901.

[0037] In summary, the pre-treated flocculent slurry is transported to the interior of the slurry inlet box 2 by an external pump for preliminary filtration. When the flocculent slurry passes through the slurry inlet box 2, it is divided into two parts. One part of the small-particle solid phase passes through the filter strip 201 and is introduced into the lower sieve plate 303 of the vibrating screen 3 for screening, while the large-particle sediment in this part is discharged from the device. The mud containing small-particle solid phase passes through the lower sieve plate 303 of the vibrating screen 3 and falls into the bottom mud bucket 4. The mud in the bottom mud bucket 4 is then powered by the slurry pump 5 to pump the mud in the bottom mud bucket 4 into the top mud bucket 7 through the cyclone 6. Since the cyclone 6 can use coarse particles to separate the solid phase, the mud in the bottom mud bucket 4 is pumped into the top mud bucket 7. There is a particle size difference between the coarse particles and the fine particles. They are subject to different centrifugal forces, centripetal buoyancy, fluid drag, etc., and are subjected to centrifugal sedimentation, so that the coarse particles are discharged through the bottom flow port of the cyclone 6, while the fine particles are discharged from the second interface 602. The mud discharged from the bottom flow port of the cyclone 6 is discharged to the upper screen plate 302 through the slurry inlet auxiliary box 8, and undergoes the final step of fine screening, drying and discharging outside the device. In this process, particles that do not meet the screening requirements will fall into the bottom mud bucket 4, while the mud discharged from the second interface 602 of the cyclone 6 will enter the external mud tank and wait for the next step of processing. This part is not closely related to this application, so it is not described in detail in the figure.

[0038] It is worth mentioning that the mud is discharged from the slurry inlet main box 2 to the vibrating screen 3, and then discharged from the bottom mud hopper 4 at the bottom of the vibrating screen 3 to the cyclone 6 and the top mud hopper 7, and then flows back from the top mud hopper 7 through the slurry inlet auxiliary box 8 to the vibrating screen 3 for the final fine screening. In the final fine screening process, the mud that does not meet the particle size will also flow back to the bottom mud hopper 4. If the particle size is too fine, it will be discharged to the external mud tank through the cyclone 6. The above operation process realizes multi-stage processing and forms a self-circulation within the system. This design makes the mud flow in the device smoother through reasonable spatial layout and process arrangement, reduces the possibility of blockage and backlog, and further improves the stability and reliability of mud treatment.

[0039] The working principle of the present invention is as follows: The mud treatment device of the present invention is based on the design of multi-stage collaborative separation and self-circulation optimization. The specific process is as follows: After the mud is extracted from the mud pit, flocculants are added to make the fine particles condense into flocs, accelerate sedimentation and adsorb pollutants, and then the flocculated mud enters the slurry inlet box 2, inside which filter strips 201 (narrow at the top and wide at the bottom) are arranged so that the mud that is not fully flocculated is directed to the separation box 9 for enhanced solid-liquid separation, and the remaining well-flocculated mud flows into the vibrating screen 3 through the gaps in the filter strips 201. The vibrating screen 3 also has two-stage screening. Among them, the lower screen plate 303 has a large aperture, which directly removes large particles of rock debris and the screened material is directly discharged. The upper screen plate 30 2 is a small aperture, which further separates fine particles. The mud under the screen falls into the bottom mud bucket 4. The mud in the bottom mud bucket 4 is pumped into the cyclone 6 through the slurry pump 5. The coarse particles are discharged from the bottom nozzle of the cyclone 6, return to the slurry inlet box 8 and are guided to the upper screen plate 302 for secondary screening. The fine particles are discharged into the external mud tank from the second interface 602 on the top to realize the diversion of ultra-fine particles. The separation box 9 spirally squeezes and dehydrates, and the squeezed mud can enter the slurry inlet box 8 through the external mud pump, forming a self-circulating system and a double-processing closed-loop system.

[0040] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A mud processing device for geological drilling, characterized by: include A steel frame (1) for loading components for processing mud; A slurry inlet main box (2) and a separation box (9), wherein the slurry inlet main box (2) is located on one side of the steel frame (1), and the separation box (9) performs preliminary processing on the slurry entering the slurry inlet main box (2); A vibrating screen (3) and a bottom mud hopper (4), wherein the bottom mud hopper (4) is arranged below the vibrating screen (3); the vibrating screen (3) performs coarse screening on the mud in the slurry inlet main box (2), and the mud after coarse screening enters the bottom mud hopper (4); A slurry pump (5) for conveying the slurry in the bottom slurry hopper (4); A cyclone (6) and a top mud hopper (7), wherein the cyclone (6) is arranged above the top mud hopper (7), and the top mud hopper (7) is arranged on the top of the steel frame (1), and the slurry pump (5) transports the mud in the bottom mud hopper (4) to the inside of the cyclone (6); A slurry feed auxiliary box (8), the slurry feed auxiliary box (8) is located between the slurry feed main box (2) and the vibrating screen (3), the top slurry hopper (7) enters the vibrating screen (3) through the slurry feed auxiliary box (8), and is discharged to the outside after being processed by the vibrating screen (3); The slurry after the initial treatment in the separation box (9) is discharged into the slurry inlet auxiliary box (8) through a slurry pump for further treatment.

2. A mud processing device for geological drilling according to claim 1, characterized in that: The interior of the slurry inlet main box (2) is provided with filter strips (201) arranged at equal intervals, forming a filtering and separation unit, wherein the top of the filter strips (201) gradually becomes smaller and the bottom gradually becomes larger, and the separation unit separates the pretreated flocculent slurry into the interior of the separation box (9); A pulp discharge port (202) is provided on a side of the pulp inlet main box (2) facing the separation box (9); A first row of pulp barrels (203) is installed on the side of the bottom of the pulp inlet main box (2) facing the vibrating screen (3).

3. A mud processing device for geological drilling according to claim 2, characterized in that: A vibration motor (301) is installed on the top of the vibrating screen (3), and an upper screen plate (302) and a lower screen plate (303) are also provided on the vibrating screen (3). A window (304) is provided on the side of the vibrating screen (3) facing the pulp inlet main box (2); The window (304) corresponds to the position of the lower screen plate (303), and the first row of pulp barrels (203) is arranged corresponding to the window (304), so that the slurry in the pulp inlet box (2) is discharged into the lower screen plate (303) of the vibrating screen (3) for primary screening.

4. The mud processing device for geological drilling according to claim 1, characterized in that: A first pipe (501) is provided at one end of the slurry pump (5), and a second pipe (502) is provided at the other end, and the second pipe (502) is connected to the bottom mud hopper (4).

5. The mud processing device for geological drilling according to claim 4, characterized in that: The cyclone (6) comprises a first interface (601) and a second interface (602), the first pipe (501) is connected to the first interface (601), the mud after coarse screening inside the bottom mud hopper (4) is discharged into the cyclone (6) through the first interface (601), and the mud to be separated is discharged from the bottom nozzle of the cyclone (6) or the second interface (602) of the cyclone (6) according to the particle diameter.

6. The mud processing device for geological drilling according to claim 1, characterized in that: A bracket (701) is provided above the top mud hopper (7), and a baffle (702) is provided on the bracket (701) at a position corresponding to the bottom nozzle of the cyclone (6); A second row of slurry tubes (703) is installed at the bottom of the top slurry hopper (7), and the second row of slurry tubes (703) is connected to the slurry feed auxiliary box (8).

7. The mud processing device for geological drilling according to claim 3, characterized in that: The bottom of the slurry feed auxiliary box (8) protrudes downward to form a slurry discharge protrusion (801). The slurry discharge protrusion (801) of the slurry feed auxiliary box (8) is located at the position of the upper screen plate (302), and the slurry in the cyclone (6) is discharged onto the upper screen plate (302) through the slurry feed auxiliary box (8) for fine screening.

8. The mud processing device for geological drilling according to claim 1, characterized in that: The separation box (9) comprises a box body (901), the inner wall of the box body (901) is relatively raised to form a narrow opening (903) for water to pass through, a mud outlet hole (904) is provided on one end surface of the box body (901), a fixing frame (909) is provided on the outer wall of the box body (901) on one side of the mud outlet hole (904), and a movable sealing disk (911) and a pressure spring (910) are provided between the fixing frame (909) and the box body (901), one end of the pressure spring (910) abuts against the fixing frame (909), and the other end abuts against the movable sealing disk (911), and the diameter of the movable sealing disk (911) is larger than the diameter of the mud outlet hole (904); When mud passes through the mud outlet hole (904), the movable sealing disc (911) is squeezed to be discharged outside the box (901), and the pressure spring (910) is compressed; When there is no mud inside the box (901), the pressure spring (910) releases pressure and the movable sealing disk (911) closes the box (901).

9. The mud processing device for geological drilling according to claim 8, characterized in that: A driving motor (905) is fixed to one end of the box (901) away from the fixing frame (909), and an auger blade (906) is installed at the output end of the driving motor (905). The end of the auger blade (906) passes through the mud outlet hole (904) and the movable sealing disk (911), and is rotatably mounted on the fixing frame (909).

10. The mud processing device for geological drilling according to claim 9, characterized in that: A U-shaped screen (907) and an O-shaped screen (908) are also installed inside the box (901). The O-shaped screen (908) is arranged close to the fixed frame (909). When the mud is discharged into the O-shaped screen (908) through the auger blade (906), the movable sealing disk (911) is squeezed accordingly.

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