A mud processing device applied to geological drilling

Abstract

The application belongs to the technical field of mud processing equipment, and particularly relates to a mud processing device applied to geological drilling, which comprises a steel frame, a total mud inlet box, a separation box, a vibrating screen, a bottom mud bucket, a slurry pump, a cyclone, a top mud bucket and a mud inlet auxiliary box. The steel frame is used for loading components for processing mud. The total mud inlet box is located on one side of the steel frame. The separation box is used for preliminarily processing mud entering the total mud inlet box. The bottom mud bucket is arranged below the vibrating screen. The vibrating screen is used for coarsely screening mud in the total mud inlet box. Mud after the coarse screening enters the bottom mud bucket. The mud processing device has a three-stage separation system, covers different particle sizes, and realizes rapid and efficient solid-liquid separation through the separation box. Even mud with incomplete flocculation can be directly processed. The mud forms a self-circulation and double-processing closed-loop processing system in the device, effectively removes impurities and water in the mud, and improves the quality and utilization rate of the mud.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mud treatment equipment, and particularly relates to a mud treatment device applied to geological drilling. BACKGROUND

[0002] In the engineering fields of geological drilling, oil exploitation, mine exploration and tunnel construction, mud (drilling fluid) as an important engineering medium undertakes multiple key functions such as cooling the drill bit, carrying the rock cuttings, stabilizing the well wall and balancing the formation pressure. With the development of modern engineering towards deep and complex strata, higher requirements are put forward for the performance and treatment technology of mud. However, the used waste mud contains a large amount of rock cuttings, drill cuttings, clay particles and various chemical additives, and its treatment problem is increasingly prominent, which has become an important factor restricting the environmental protection and economy of engineering.

[0003] In the traditional mud treatment technology, the separation by a vibrating screen and the natural sedimentation method are mainly relied on. The vibrating screen as the first treatment process realizes the preliminary separation of solid and liquid through mechanical vibration, but its treatment effect is limited by the mesh size of the screen, and the separation efficiency of fine particles with small particle size is significantly reduced. The subsequent sedimentation tank treatment not only occupies a large area, but also has a long treatment period, and often needs several days to achieve the ideal solid-liquid separation effect. This treatment method has several obvious technical defects:

[0004] Firstly, in order to shorten the construction period or reduce the cost, a mud settling pit is directly opened on the construction site, but due to the short design period, the mud is not fully flocculated and settled during the pre-treatment, so that there are still muds with different particle sizes distributed in the treatment process, and the vibrating screen is also difficult to treat muds with different particle size distributions. In actual engineering, the particle size distribution range of rock cuttings generated by drilling is extremely wide, from several millimeters to several microns. Although part of the engineering adopts the way of multi-stage vibrating screen in series, this configuration greatly increases the complexity and energy consumption of the equipment, and the existing treatment system lacks overall optimization, and most of the engineering sites adopt the patchwork type equipment layout, and there is lack of organic connection between the treatment units. For example, the vibrating screen, cyclone and filter press are often operated independently, which not only increases the material transfer link, but also causes repeated treatment. This discrete treatment mode leads to low system efficiency, increased energy consumption, and difficulty in achieving precise separation and recycling of mud components. SUMMARY

[0005] The purpose of the present application is to provide a mud treatment device applied to geological drilling, which can have a three-stage separation system covering different particle sizes, and realize rapid and efficient solid-liquid separation through the pre-set separation tank. Even the mud with incomplete flocculation can be directly put into treatment. The mud forms a self-circulating and double-treatment closed-loop treatment system in the equipment, effectively removes impurities and moisture in the mud, and improves the quality and utilization rate of the mud.

[0006] The technical scheme adopted by the present application is as follows:

[0007] A mud processing device applied to geological drilling, comprising a steel frame, a mud inlet main box, a separation box, a vibrating screen, a bottom mud bucket, a slurry pump, a cyclone and a top mud bucket and a mud inlet auxiliary box, the steel frame is used for loading components for processing mud, the mud inlet main box is located on one side of the steel frame, the separation box is used for preliminarily processing mud entering the mud inlet main box, and the bottom mud bucket is arranged below the vibrating screen; the vibrating screen is used for coarsely screening mud in the mud inlet main box, and the coarsely screened mud enters the bottom mud bucket; the slurry pump is used for conveying mud in the bottom mud bucket to the inside of the cyclone; the mud inlet auxiliary box is located between the mud inlet main box and the vibrating screen; the top mud bucket enters the vibrating screen through the mud inlet auxiliary box and is discharged outside after being processed by the vibrating screen, and the preliminarily processed mud in the separation box is discharged into the mud inlet auxiliary box by the slurry pump for reprocessing.

[0008] In a preferred scheme, equidistant filter strips are arranged in the mud inlet main box to form a filter separation unit, the top of the filter strip is gradually larger than the bottom, and the separation unit separates the preliminarily processed flocculent mud into the inside of the separation box.

[0009] A mud discharge port is formed in the side of the mud inlet main box facing the separation box.

[0010] A first mud discharge cylinder is mounted on the side of the bottom of the mud inlet main box facing the vibrating screen.

[0011] In a preferred scheme, a vibrating motor is mounted on the top of the vibrating screen, upper and lower screen plates are arranged on the vibrating screen, and a window is formed in the side of the vibrating screen facing the mud inlet main box.

[0012] The window corresponds to the position of the lower screen plate, and the first mud discharge cylinder is arranged to correspond to the window to discharge mud in the mud inlet main box to the lower screen plate of the vibrating screen for primary screening.

[0013] In a preferred scheme, a first pipe is arranged at one end of the slurry pump, and a second pipe is arranged at the other end, and the second pipe is connected with the bottom mud bucket.

[0014] In a preferred scheme, the cyclone comprises a first interface and a second interface, the first pipe is connected with the first interface, the mud coarsely screened in the inside of the bottom mud bucket 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.

[0015] In a preferred scheme, a support is arranged above the top slurry bucket, and a baffle is arranged on the support at a position corresponding to the bottom nozzle of the cyclone;

[0016] A second discharge cylinder is arranged at the bottom of the top slurry bucket, and the second discharge cylinder is connected with the slurry inlet auxiliary box.

[0017] In a preferred scheme, the slurry inlet auxiliary box is downwardly and protrudingly extended to form a slurry discharge nozzle, and the slurry discharge nozzle of the slurry inlet auxiliary box is located at the position of the upper sieve plate, so that the slurry in the cyclone is discharged on the upper sieve plate through the slurry inlet auxiliary box for fine screening.

[0018] In a preferred scheme, the separation box comprises a box body, the inner wall of the box body is relatively protruded to form a narrow opening through which the water body passes, an outlet mud hole is formed in one end surface of the box body, a fixing frame is further arranged on one side of the outlet mud hole of the outer wall of the box body, a movable sealing disc and a pressure spring are further arranged between the fixing frame and the box body, one end of the pressure spring is abutted against the fixing frame, and the other end of the pressure spring is abutted against the movable sealing disc, and the diameter of the movable sealing disc is greater than the diameter of the outlet mud hole.

[0019] When the slurry passes through the outlet mud hole, the movable sealing disc is extruded to be discharged outside the box body, and the pressure spring is compressed.

[0020] When there is no slurry in the box body, the pressure spring is released, and the movable sealing disc seals the box body.

[0021] In a preferred scheme, a driving motor is fixed to one end of the box body away from the fixing frame, a screw flight is mounted at the output end of the driving motor, and the end of the screw flight passes through the outlet mud hole, the movable sealing disc and is rotatably mounted on the fixing frame.

[0022] In a preferred scheme, a U-shaped sieve net and an O-shaped sieve net are further mounted in the box body, and the O-shaped sieve net is arranged close to the fixing frame, so that when the slurry is discharged into the O-shaped sieve net through the screw flight, the movable sealing disc is extruded.

[0023] The present application has the following technical effects:

[0024] In the present application, the vibration screen, the cyclone and the screw extrusion are combined to form a three-stage separation system, which covers different particle sizes and can adapt to mud with different particle size distributions. The separation box is pre-set to realize rapid and efficient solid-liquid separation. Even the mud with incomplete flocculation can be directly put into the treatment. The treatment units are organically linked to form a continuous treatment process, so that the mud forms a self-circulating and double-treatment closed-loop treatment system in the equipment.

[0025] In the present application, by increasing the setting of the separation tank, the large-scale pre-mud treatment is suitable, frequent shutdown is not needed, and the mud treated by the separation tank is re-discharged into the auxiliary tank by the external mud pump for re-treatment, forming a double and multi-stage treatment structure, so that the mud can smoothly and continuously enter the next stage of the treatment device, and 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 DRAWINGS

[0026] Figure 1 is the overall structure schematic diagram in the present application;

[0027] Figure 2 is the separation structure schematic diagram in the present application;

[0028] Figure 3 is the structure schematic diagram of the mud inlet tank in the present application;

[0029] Figure 4 is the structure schematic diagram of the vibrating screen in the present application;

[0030] Figure 5 is the structure schematic diagram of the bottom mud bucket and the slurry pump in the present application;

[0031] Figure 6 is the structure schematic diagram of the top mud bucket and the auxiliary tank in the present application;

[0032] Figure 7 is the structure schematic diagram of the separation tank in the present application;

[0033] Figure 8 is the structure schematic diagram of the tank body in the present application;

[0034] Figure 9 is the mud flow structure schematic diagram in the present application.

[0035] In the drawings, the component list represented by each reference numeral is as follows:

[0036] 1, steel frame;

[0037] 2, mud inlet tank; 201, filter strip; 202, mud discharge port; 203, first mud discharge cylinder;

[0038] 3, vibrating screen; 301, vibrating motor; 302, upper layer screen plate; 303, lower layer screen plate; 304, window;

[0039] 4, bottom mud bucket;

[0040] 5, slurry pump; 501, first pipeline; 502, second pipeline;

[0041] 6, cyclone; 601, first interface; 602, second interface;

[0042] 7, top mud bucket; 701, support; 702, baffle; 703, second discharge cylinder;

[0043] 8, mud inlet sub-tank; 801, discharge nozzle;

[0044] 9, separation tank; 901, tank body; 903, narrow mouth; 904, mud outlet hole; 905, driving motor; 906, auger blade; 907, U-shaped screen; 908, O-shaped screen; 909, fixing frame; 910, pressure spring; 911, movable sealing disc. DETAILED DESCRIPTION

[0045] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0046] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other different manners than those described herein, and those skilled in the art can make similar generalizations without departing from the spirit and scope of the present application, therefore, the present application is not limited to the specific embodiments disclosed below.

[0047] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics contained in at least one implementation of the present application. "In a preferred embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0048] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions including length, width and depth should be included in the actual manufacture.

[0049] Please refer to the accompanying drawings Figure 1 , Figure 2 or Figure 9As shown, the present application provides a mud processing device applied to geological drilling, which comprises a steel frame 1, a mud inlet main box 2, a separation box 9, a vibrating screen 3, a bottom mud bucket 4, a slurry pump 5, a cyclone 6, a top mud bucket 7 and a mud inlet auxiliary box 8. The steel frame 1 is used to load the components for processing mud. The mud inlet main box 2 is located on one side of the steel frame 1. The separation box 9 preliminarily processes the mud entering the mud inlet main box 2. The bottom mud bucket 4 is arranged below the vibrating screen 3. The vibrating screen 3 coarsely screens the mud in the mud inlet main box 2. The mud after the coarse screening enters the bottom mud bucket 4. The cyclone 6 is arranged above the top mud bucket 7. The top mud bucket 7 is arranged at the top of the steel frame 1. The slurry pump 5 conveys the mud in the bottom mud bucket 4 to the inside of the cyclone 6. The mud inlet auxiliary box 8 is located between the mud inlet main box 2 and the vibrating screen 3. The top mud bucket 7 enters the vibrating screen 3 through the mud inlet auxiliary box 8 and is discharged outside after being processed by the vibrating screen 3. The mud preliminarily processed by the separation box 9 is discharged into the mud inlet auxiliary box 8 for reprocessing by the slurry pump.

[0050] Specifically, when the mud is extracted from the mud pit, a flocculating agent is used for flocculation treatment of the mud for convenient processing. The mud after the flocculation treatment can adsorb pollutants and accelerate sedimentation, which is convenient for subsequent dehydration and solid-liquid separation procedures.

[0051] Please refer to the accompanying drawings Figure 3 As shown, the inside of the mud inlet main box 2 is provided with filter strips 201 arranged at equal intervals to form a filtering separation unit. The top of the filter strip 201 is gradually larger than the bottom. The separation unit separates the flocculent mud after the preliminary treatment to the inside of the separation box 9. The side of the mud inlet main box 2 facing the separation box 9 is provided with a mud discharge port 202. The bottom of the mud inlet main box 2 is provided with a first mud discharge cylinder 203 on the side facing the vibrating screen 3.

[0052] Please refer to the accompanying drawings Figure 4 As shown, the top of the vibrating screen 3 is provided with a vibrating motor 301. The vibrating screen 3 is also provided with an upper screen plate 302 and a lower screen plate 303 distributed in an up-down manner. The side of the vibrating screen 3 facing the mud inlet main box 2 is provided with a window 304. The window 304 corresponds to the position of the lower screen plate 303. The first mud discharge cylinder 203 is arranged corresponding to the window 304 to discharge the mud in the mud inlet main box 2 to the lower screen plate 303 of the vibrating screen 3 for preliminary screening.

[0053] Specifically, the screen hole of the upper screen plate 302 is smaller than that of the lower screen plate 303. Through the design of screen meshes with different diameters, fine classification of mud particles is realized. The lower screen plate 303 is mainly used to remove larger particles and impurities. The upper screen plate 302 further refines the treatment to effectively separate the fine particles in the mud and moisture. This two-stage treatment structure not only improves the efficiency of mud treatment, but also ensures the quality of the treated mud, laying a foundation for the subsequent drying treatment and recycling of the mud.

[0054] Specifically, by arranging filter strips 201 inside the slurry inlet tank 2, a preliminary filtering effect is achieved, and by means of space separation, double processing is achieved. The slurry passing through the slurry inlet tank 2 is separated according to particle size, and a part of it is filtered into the vibrating screen 3 for preliminary screening, and the other part is filtered into the separation tank 9. In the separation tank 9, the flocculated slurry is still flowable due to its affinity with water, and the special design of the gradually increasing top and bottom of the filter strips 201 can intercept part of the insufficiently flocculated slurry inside the separation tank 9 for solid-liquid separation treatment, while the flocculated slurry is driven by water to pass through the gaps between the filter strips 201 into the vibrating screen 3. In the vibrating screen 3, the slurry is screened by the upper screen plate 302 to retain larger solid particles. Based on the above-mentioned double processing design of the vibrating screen 3 and the separation tank 9, the efficiency of slurry treatment is improved, and the quality of slurry treatment is also guaranteed.

[0055] Please refer to the attached Figure 5 or Figure 6 As shown in the figure, one end of the slurry pump 5 is provided with a first pipe 501, and the other end is provided with a second pipe 502. The second pipe 502 is connected with the bottom slurry tank 4. The cyclone 6 includes a first interface 601 and a second interface 602. The first pipe 501 is in communication with the first interface 601. The coarsely screened slurry in the bottom slurry tank 4 is discharged into the cyclone 6 through the first interface 601. The separated slurry is discharged from the bottom nozzle of the cyclone 6 or the second interface 602 of the cyclone 6 according to the particle diameter.

[0056] Specifically, when the slurry enters the cyclone 6 through the first pipe 501, the slurry enters the inside of the cyclone 6 at high pressure and tangentially, forming a high-speed rotating flow field. Under the action of centrifugal force, the slurry components with high density are thrown to the wall and spiral downward to the bottom nozzle, while the slurry components with low density gather to the center, forming an inner vortex and being discharged from the top second interface 602. The slurry discharged from the second interface 602 is collected from the outside slurry tank for subsequent treatment.

[0057] Please refer to the attached Figure 6 As shown in the figure, a support 701 is arranged above the top slurry tank 7. A baffle 702 is arranged on the support 701 corresponding to the position of the bottom nozzle of the cyclone 6. A second slurry discharge cylinder 703 is arranged at the bottom of the top slurry tank 7. The second slurry discharge cylinder 703 is in communication with the slurry inlet sub-tank 8. The bottom of the slurry inlet sub-tank 8 protrudes downward to form a slurry discharge nozzle 801. The slurry discharge nozzle 801 of the slurry inlet sub-tank 8 is located at the position of the upper screen plate 302. The slurry in the cyclone 6 is discharged onto the upper screen plate 302 through the slurry inlet sub-tank 8 for fine screening.

[0058] More specifically, the baffle 702 on the top slurry bucket 7 can adopt a flexible curtain of rubber material or a hard material of PVC, which can swing to adapt to the impact of the slurry, and can also choose a high-wear-resistant polyurethane material suitable for sand-containing slurry, or a stainless steel material more suitable for corrosive slurry or high-temperature environment. The baffle 702 can prevent slurry splashing, block random splashing of high-pressure slurry such as the bottom flow of the nozzle of the cyclone 6, avoid polluting the work area or injuring the operator, and also reduce the contamination of the equipment, ground or personnel by the splashing slurry, and can direct the flow to concentrate and guide the splashing slurry to the designated collection point, the inside of the top slurry bucket 7, for subsequent processing or recycling.

[0059] More specifically, the slurry discharge protruding nozzle 801 of the slurry inlet auxiliary box 8 corresponds to the position of the upper screen plate 302, ensuring that the slurry can be accurately discharged onto the screen plate, so that the slurry inside the top slurry bucket 7 is discharged to the upper screen plate 302 of the vibrating screen 3 for the last processing step. The upper screen plate 302 and the lower screen plate 303 of the vibrating screen 3 form a two-stage processing structure, which can further subdivide the slurry particles and accelerate the slurry dewatering process, which is beneficial to subsequent slurry drying treatment and recycling of the slurry.

[0060] Please refer to the accompanying drawings Figure 7 Or Figure 8 As shown in the drawings, the separation box 9 includes a box body 901, the inner wall of the box body 901 is relatively protruding to form a narrow opening 903 for the water body to pass through, one end face of the box body 901 is provided with a slurry outlet hole 904, and the outer wall of the box body 901 is provided with a fixing frame 909 on one side of the slurry outlet hole 904. An activity sealing disc 911 and a pressure spring 910 are arranged 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 activity sealing disc 911. The diameter of the activity sealing disc 911 is greater than that of the slurry outlet hole 904. A drive motor 905 is fixed to one end of the box body 901 away from the fixing frame 909, a auger blade 906 is mounted at the output end of the drive motor 905, the end of the auger blade 906 passes through the slurry outlet hole 904 and the activity sealing disc 911, and is rotatably installed on the fixing frame 909. A U-shaped screen 907 and an O-shaped screen 908 are further installed in the box body 901, and the O-shaped screen 908 is arranged close to the fixing frame 909. When the slurry is discharged into the inside of the O-shaped screen 908 through the auger blade 906, the activity sealing disc 911 is correspondingly extruded.

[0061] Based on the above, when the driving motor 905 starts, it rotates in the screen along with the auger blade 906, pushing the material forward. As the pitch of the auger shaft on the auger blade 906 gradually decreases, the space compression force on the material increases, and the liquid is squeezed out. The mud in the U-shaped screen 907 is continuously pushed into the O-shaped screen 908, while the water flows through the gap between the screens to the narrow opening 903. The mud is trapped in the screen cylinder and continues to be transported forward until it passes through the mud outlet 904 and is discharged outside the box 901. By increasing the separation tank 9, large-scale pre-mud treatment is suitable, and frequent shutdown is not required. The mud treated by the separation tank 9 is re-discharged into the auxiliary mud inlet tank 8 by an external mud pump for re-treatment, forming a double and 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 from the mud, improving the quality and utilization rate of the mud.

[0062] When the mud passes through the mud outlet 904, the extrusion movable sealing disc 911 is discharged outside the box 901, and the pressure spring 910 is compressed. When there is no mud in the box 901, the pressure spring 910 is released, and the movable sealing disc 911 seals the box 901.

[0063] In summary, the pre-treated flocculent mud is transported to the inside of the total mud inlet tank 2 by an external pump for preliminary filtering. When the flocculent mud passes through the total mud inlet tank 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 screen plate 303 of the vibrating screen 3 for screening treatment, while the other part of the large particle mud is discharged outside. The mud containing small particle solid phase falls into the bottom mud bucket 4 through the lower screen plate 303 of the vibrating screen 3. The mud in the bottom mud bucket 4 is powered by the slurry pump 5 to pass through the cyclone 6 into the top mud bucket 7. Due to the particle size difference between coarse particles and fine particles, the cyclone 6 can utilize the different sizes of centrifugal force, centripetal buoyancy, and fluid drag force. The coarse particles are discharged through the bottom flow port of the cyclone 6, while the fine particles are discharged through 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 auxiliary mud inlet tank 8 for the final step of fine screening, drying, and discharging outside. During this process, the particles that do not meet the screening requirements fall to the bottom mud bucket 4, while the mud discharged from the second interface 602 of the cyclone 6 enters the external mud tank for the next step of treatment. This part is not closely related to the present application, so it is not described in detail in the figure.

[0064] It is worth special mentioning that the slurry is discharged from the slurry inlet main box 2 to the vibrating screen 3, and then discharged from the bottom slurry bucket 4 at the bottom of the vibrating screen 3 to the cyclone 6, the top slurry bucket 7, and then backflowed to the vibrating screen 3 through the slurry inlet auxiliary box 8 in the top slurry bucket 7, and finally screened, and the slurry that does not meet the particle size is backflowed to the bottom slurry bucket 4, and if the particle size is too fine, the slurry is discharged to the external slurry tank through the cyclone 6. The above operation process realizes multi-stage processing and forms a self-circulation system in the system. Through reasonable space layout and process arrangement, the slurry flows more smoothly in the device, reduces the possibility of blockage and accumulation, and further improves the stability and reliability of the slurry treatment.

[0065] The working principle of the present application is that the slurry treatment device of the present application is based on the design of multi-stage cooperative separation and self-circulation optimization, and the specific process is as follows:

[0066] After the slurry is extracted from the slurry pit, a flocculating agent is added to make the fine particles coagulate into flocs, accelerate sedimentation and adsorb pollutants, and then the flocculated slurry is introduced into the slurry inlet main box 2, which is provided with a filter strip 201 (narrow at the top and wide at the bottom) to guide the slurry that is not fully flocculated to the separation box 9 for enhanced solid-liquid separation, and the rest of the well-flocculated slurry flows into the vibrating screen 3 through the gap of the filter strip 201. The vibrating screen 3 is also two-stage screening, wherein the lower sieve plate 303 is large-pored to directly remove large particles, and the sieve above is directly discharged, and the upper sieve plate 302 is small-pored to further separate fine particles, and the slurry in the bottom slurry bucket 4 falls into the bottom slurry bucket 4, and the slurry in the bottom slurry bucket 4 is pumped into the cyclone 6 by the slurry pump 5, the coarse particles are discharged from the bottom nozzle of the cyclone 6, returned to the slurry inlet auxiliary box 8 and guided to the upper sieve plate 302 for secondary screening, and the fine particles are discharged from the top second interface 602 into the external slurry tank, realizing the separation of ultra-fine particles, and the slurry squeezed out of the separation box 9 can be introduced into the slurry inlet auxiliary box 8 by the external slurry pump, forming a self-circulation system and a closed loop system for double processing.

[0067] The above is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A mud treatment device for geological drilling, characterized in that, include: Steel frame used to load components for handling mud; The slurry feed box and the separation box are located on one side of the steel frame. The slurry feed box performs preliminary treatment on the slurry entering the slurry feed box. The vibrating screen and the bottom mud hopper are located below the vibrating screen. The vibrating screen performs coarse screening on the mud in the main mud inlet, and the mud after coarse screening enters the bottom mud hopper. Slurry pumps are used to transport slurry from the bottom slurry hopper. The hydrocyclone and the top mud hopper are provided. The hydrocyclone is located above the top mud hopper, which is located on the top of the steel frame. The slurry pump transports the mud from the bottom mud hopper to the inside of the hydrocyclone. A secondary slurry inlet box is located between the main slurry inlet box and the vibrating screen. The top slurry hopper enters the vibrating screen through the secondary slurry inlet box and is discharged to the outside after being processed by the vibrating screen. The bottom of the slurry inlet box extends downward to form a slurry discharge nozzle. The slurry discharge nozzle of the slurry inlet box is located on the upper screen plate, so that the slurry in the hydrocyclone is discharged onto the upper screen plate for fine screening through the slurry inlet box. The slurry initially treated in the separation box is pumped into the slurry inlet auxiliary box for further treatment. The inside of the slurry feed box is equipped with filter strips arranged at equal intervals to form a filtration and separation unit. The top of the filter strips gradually becomes smaller and the bottom gradually becomes larger. The separation unit separates the pre-treated flocculent slurry into the inside of the separation box. After the mud is extracted from the mud pit, flocculant is added to cause the fine particles to agglomerate into flocs, accelerate sedimentation and adsorb pollutants. Then the flocculated mud is fed into the main feed tank, so that the mud that is not fully flocculated is guided to the separation tank for enhanced solid-liquid separation, and the remaining well flocculated mud flows into the vibrating screen through the gaps in the filter strips. The vibrating screen is equipped with a vibrating motor on top, and it is also equipped with an upper screen plate and a lower screen plate distributed vertically. The slurry in the slurry feed box is discharged into the lower screen plate of the vibrating screen for initial screening. The separation box includes a box body with relatively convex inner walls forming a narrow opening for water to pass through. A mud outlet is provided on one end face of the box body. A fixing frame is also provided on the outer wall of the box body on one side of the mud outlet. A movable sealing plate and a pressure spring are also 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 plate. A drive motor is fixed to one end of the housing away from the fixing frame, and an auger blade is installed at the output end of the drive motor; The interior of the box is also equipped with a U-shaped screen and an O-shaped screen, with the O-shaped screen positioned close to the fixed frame. A support frame is installed above the top mud hopper, and a baffle is installed on the support frame at the position corresponding to the bottom nozzle of the hydrocyclone.

2. The mud treatment device for geological drilling according to claim 1, characterized in that: The main slurry inlet is provided with a slurry discharge port on the side facing the separation box; The bottom of the main slurry inlet box is equipped with a first slurry discharge cylinder on the side facing the vibrating screen.

3. The mud treatment device for geological drilling according to claim 2, characterized in that: The vibrating screen has a window on the side facing the main slurry box; The window corresponds to the position of the lower screen plate, and the first row of slurry cylinders is set to correspond to the window.

4. The mud treatment device for geological drilling according to claim 3, characterized in that: The slurry pump is provided with a first pipe at one end and a second pipe at the other end, and the second pipe is connected to the bottom mud hopper.

5. A mud treatment device for geological drilling according to claim 4, characterized in that: The hydrocyclone includes a first port and a second port. The first pipe is connected to the first port. The slurry after coarse screening inside the bottom slurry hopper is discharged into the hydrocyclone through the first port. The slurry to be separated is discharged from the bottom nozzle of the hydrocyclone or the second port of the hydrocyclone according to the particle diameter.

6. A mud treatment device for geological drilling according to claim 5, characterized in that: The bottom of the top mud hopper is equipped with a second row of mud cylinders, which are connected to the mud inlet auxiliary box.

7. A mud treatment device for geological drilling according to claim 6, characterized in that: The diameter of the movable sealing plate is larger than the diameter of the mud outlet hole; When the mud passes through the mud outlet, it is squeezed and discharged from the outside of the box by the movable sealing disc, and the pressure spring is compressed. When there is no mud inside the chamber, the pressure spring is released, and the movable sealing plate closes the chamber.

8. A mud treatment device for geological drilling according to claim 7, characterized in that: The end of the auger blade passes through the mud outlet and the movable sealing plate, and is rotatably mounted on the fixed frame.

9. A mud treatment device for geological drilling according to claim 8, characterized in that: When the mud is discharged into the O-type screen through the auger blades, it corresponds to the squeezing of the movable sealing plate.

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