A method for separating rock, sand, mud and water in drilling cuttings based on the principle of centrifugal force

Abstract

This invention provides a method for separating stones, sand, mud, and water from drill cuttings based on the principle of centrifugal force, belonging to the field of separation technology. It includes the following steps: S1, after drilling, the drill cuttings are collected and placed into a separation device, where solid particles and liquids are screened; S2, after the motor starts, the separation components operate, screening and discharging stones from the drill cuttings that cannot be reused; S3, a drill cuttings dryer separates the mud-water mixture and fine particles from the drill cuttings; S4, a flushing component, in conjunction with a circulation component, washes the separated fine particles from the drill cuttings. This invention achieves effective separation of stones from drill cuttings by setting up a separation component, and achieves a two-way "filtration-reuse" cycle of wastewater from the drill cuttings by setting up circulation and flushing components, reducing operating costs and improving the sustainability of the separation device.

Description

Technical Field

[0001] This invention relates to the field of separation technology, and in particular to a method for separating stone, sand, mud and water from drilling cuttings based on the principle of centrifugal force. Background Technology

[0002] Drill cuttings, a type of waste generated in large quantities during construction activities, can be comprehensively utilized to not only reduce environmental pollution but also promote resource recycling. In many engineering projects, drill cuttings are often considered waste requiring treatment and disposal, which increases project costs and wastes resources. Through scientific research and technological innovation, drill cuttings can be reused as a resource in infrastructure construction such as roadbed filling, effectively improving material utilization efficiency. Drill cuttings possess certain physical and chemical properties, and after appropriate treatment, they can be used as roadbed materials, improving roadbed stability and load-bearing capacity. Researching the comprehensive utilization of drill cuttings can not only reduce reliance on traditional roadbed materials but may also provide new performance advantages for roadbed engineering.

[0003] When drilling cuttings are reused, large stones, wood blocks, plastic sheets, and other non-rock materials are present as impurities. Before reuse, these impurities must be screened and removed. Additionally, during drilling, the surface of the cuttings contains adhering soil residue and dissolved salts, which can reduce the compaction of the backfill base. These impurities need to be removed during backfilling. Existing separation devices require large amounts of water to wash the cuttings, consuming water resources, and the separation effect sometimes falls short of expectations, affecting the compaction of the subsequent backfill base.

[0004] Therefore, this application provides a method for separating stone, sand, mud and water in drill cuttings based on the principle of centrifugal force to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for separating stone, sand, mud and water in drill cuttings based on the principle of centrifugal force, so as to solve the problem that the existing separation device requires a large amount of water to wash the drill cuttings waste, which consumes water resources, and the separation effect sometimes does not meet expectations, thus affecting the compaction of the subsequent drill cuttings particle base layer.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for separating rock, sand, mud and water in drill cuttings based on the principle of centrifugal force, comprising the following steps:

[0007] S1. After the drilling slag is collected, it is placed into a separation device, and the solid particles and liquid in the drilling slag are screened by the separation device.

[0008] S2. After the motor starts, it drives the separation component to operate, screening out the stones in the drill cuttings waste that cannot be reused, and allowing the mud-water mixture and fine particles in the drill cuttings waste to enter the drill cuttings dryer.

[0009] S3. The drilling slag dryer separates the mud-water mixture and fine particles in the drilling slag waste. At the same time, the circulating component removes ionic impurities from the separated mud-water mixture and collects the water after removing ionic impurities.

[0010] S4. The fine particles separated from the drill cuttings are washed by the flushing component and the circulation component. At the same time, the wastewater after flushing is filtered in a secondary circulation. Finally, the flushed drill cuttings particles are dried and graded by a vibrating drying screen.

[0011] Optionally, the separation device includes a mounting bracket, an installation bucket mounted on the inner wall of the top of the mounting bracket, a hydraulic cylinder mounted on the top of the mounting bracket, a motor mounted at the center of the bottom of the installation bucket, a drill cuttings dryer mounted on one side of the inner wall of the mounting bracket, a vibrating drying screen mounted on one side of the bottom of the mounting bracket, a separation component mounted on the inner wall of the installation bucket for grading and separating stones in the drill cuttings, a circulation component mounted on one side of the top of the mounting bracket for recycling water in the drill cuttings, and a rinsing component mounted on the bottom of the installation bucket for rinsing the separated drill cuttings particles. The circulation component is located on one side of the separation component, and the rinsing component is located at the bottom of the separation component.

[0012] Optionally, the separation assembly includes a first separation tank, the bottom of which is nested at the bottom of an installation tank. A transmission rod is installed at the bottom of the first separation tank, and the first separation tank is connected to a motor via the transmission rod. A sieve disc is attached to the bottom of the inner wall of the first separation tank, and an installation plate is installed at the top of the sieve disc. The top of the installation plate is connected to the bottom of a hydraulic cylinder. An arc-shaped scraper assembly is installed on one side of the bottom of the installation plate. The number of arc-shaped scraper assemblies is set to multiple, and the multiple arc-shaped scraper assemblies are arranged at equal angles at the bottom of the installation plate. The inner surface of the arc-shaped scraper assembly is in contact with the surface of the first separation tank. A first drain ring is in contact with the surface of the top edge of the first separation tank, and the first drain ring is installed at the top of the installation tank.

[0013] Optionally, the outer surface of the arc-shaped scraper assembly contacts a second separation tank, the second separation tank is installed at the bottom of the inner wall of the installation tank, a second sewage discharge ring is installed at the top edge of the second separation tank, a screen ring is installed on the surface of the second separation tank, a guide ring is installed at the bottom of the screen ring, a rigid pipe is connected through one side of the bottom end of the guide ring, the rigid pipe is nested at the bottom end of the installation tank, and the bottom end of the rigid pipe is connected through to the top of the drill cuttings dryer.

[0014] Optionally, the circulation assembly includes a reciprocating lead screw, which is mounted on one side of the mounting bracket. A pulley set is mounted at the bottom end of the reciprocating lead screw. One set of pulleys in the pulley set is mounted on the reciprocating lead screw, and the other set of pulleys in the pulley set is sleeved on the surface of the transmission rod. A sliding push plate is threaded on the outer surface of the reciprocating lead screw.

[0015] Optionally, the circulation assembly further includes a liquid storage tank, a piston disc is slidably fitted inside the cavity of the liquid storage tank, the top of the piston disc extending out of the liquid storage tank is connected to a sliding push plate, a one-way valve is installed on one side of the bottom of the liquid storage tank, and a filter tank is connected to the bottom of the one-way valve via a hose, and the filter tank is installed on one side of the inner wall of the mounting bracket.

[0016] Optionally, a sewage pipe is installed through the top of the filter barrel, and the other end of the sewage pipe is connected to the drill cuttings dryer. Ion exchange resin plates are nested on the inner wall of the filter barrel. The number of ion exchange resin plates is set to multiple, and the multiple ion exchange resin plates are arranged at equal intervals on the inner wall of the filter barrel.

[0017] Optionally, the rinsing assembly includes a rinsing tank, which is installed at the bottom of the mounting tank. A feed pipe is installed through one end of the rinsing tank, and the other end of the feed pipe is connected to a drill cuttings dryer.

[0018] Optionally, the rinsing assembly further includes a second one-way valve, which is installed through the bottom of the liquid storage tank on the other side. The bottom of the second one-way valve is connected to a water inlet pipe, and a nozzle is installed through the surface of the water inlet pipe. The number of nozzles is set to multiple, and the multiple nozzles are arranged at equal intervals on the surface of the water inlet pipe. The nozzles are nested and installed on the inner wall of the rinsing tank, and the water inlet pipe is connected to the rinsing tank through the nozzles.

[0019] Optionally, a second filter plate is installed on the inner wall of the rinsing tank. The second filter plate is made of activated carbon. A second sewage pipe is installed through the bottom of the rinsing tank. The other end of the second sewage pipe is connected through the filter tank. The other end of the rinsing tank is connected through the top of the vibrating drying screen.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] In the above scheme, by setting up a separation component, the cooperation between the first and second separation tanks achieves the separation of large and small stones in the drilling cuttings waste. Simultaneously, the lifting effect of the screen plate and the arc-shaped scraper assembly, with the special design of the screen plate and arc-shaped scraper assembly having a certain inclination angle, combined with the action of gravity, achieves the separation of stones in the drilling cuttings waste that are difficult to reuse. It also achieves differentiated screening of stones by size, further ensuring the screening effect of stones in the drilling cuttings waste, ensuring that the separated drilling cuttings particles meet the requirements for backfilling, further ensuring the backfilling effect of the drilling cuttings particles, and ensuring the compactness of the drilling cuttings particles backfill base layer.

[0022] By setting up a circulation component, using a filter barrel and multiple ion exchange resin plates, ionic impurities in the separated mud-water mixture are removed. At the same time, the water after impurity removal is collected centrally through the filter barrel. In conjunction with the cooperation of the storage tank, piston plate, and one-way valve, liquid exchange is achieved between the storage tank and the filter barrel, realizing the recycling of the water in the filter barrel. In addition, the flushing component washes the separated drill cuttings particles, and the flushing wastewater is collected and filtered again. This achieves a two-way "filtration-reuse" cycle of wastewater in the drill cuttings waste, which reduces operating costs while ensuring the separation effect of drill cuttings particles and improves the sustainability of the separation device.

[0023] By setting up a flushing component, the filtered water from the filter bucket is used to flush the separated drill cuttings particles, preventing residual mud and other impurities on the surface of the separated drill cuttings particles from affecting the subsequent backfilling and utilization of the drill cuttings particles. This further ensures the screening effect of the drill cuttings particles, while improving the processing yield of the separated drill cuttings particles and ensuring the compactness of the subsequent drill cuttings particle base backfill. Attached Figure Description

[0024] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0025] Figure 1 This is a schematic diagram of the external structure of the separation device of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the separation device of the present invention;

[0027] Figure 3 This is a bottom view of the separation device of the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the separation component of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the separate component of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the first separation tank, transmission rod, sieve plate, arc scraper assembly, and second separation tank of the present invention;

[0031] Figure 7 This is a schematic diagram of the loop component structure of the present invention;

[0032] Figure 8 This is a schematic cross-sectional view of the circulation component of the present invention;

[0033] Figure 9 This is a schematic diagram of the linkage structure between the circulation component and the rinsing component of the present invention;

[0034] Figure 10 This is a schematic diagram of the flushing assembly structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the structure of some components of the flushing assembly of the present invention.

[0036] Figure label:

[0037] 1. Mounting bracket; 2. Mounting tank; 3. Hydraulic cylinder; 4. Motor; 5. Drill slag dryer; 6. Vibrating drying screen; 7. Separation assembly; 71. First separation tank; 72. Transmission rod; 73. Screen plate; 74. Mounting plate; 75. Arc scraper assembly; 76. Sewage discharge ring one; 77. Second separation tank; 78. Sewage discharge ring two; 79. Screen ring; 710. Guide ring; 711. Rigid pipe; 8. Circulation assembly; 81. Reciprocating screw; 82. Pulley assembly; 83. Sliding push plate; 84. Liquid storage tank; 85. Piston disc; 86. One-way valve one; 87. Filter tank; 88. Sewage pipe one; 89. Ion exchange resin plate; 9. Washing assembly; 91. Washing tank; 92. Feed pipe; 93. One-way valve two; 94. Water inlet pipe; 95. Nozzle; 96. Filter plate two; 97. Sewage pipe two.

[0038] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0039] The present invention provides a method for separating stone, sand, mud, and water from drill cuttings based on the principle of centrifugal force, described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0040] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0041] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0042] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0043] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0044] Embodiments of the present invention provide a method for separating rock, sand, mud, and water in drill cuttings based on the principle of centrifugal force, comprising the following steps:

[0045] S1. After the drilling slag is collected, it is placed into a separation device, and the solid particles and liquid in the drilling slag are screened by the separation device.

[0046] S2. After the motor 4 starts, it drives the separation component 7 to operate, screening out the stones in the drill cuttings waste that cannot be reused, and allowing the mud-water mixture and fine particles in the drill cuttings waste to enter the drill cuttings dryer 5.

[0047] S3. The drilling slag dryer 5 separates the mud-water mixture and fine particles in the drilling slag waste, and the circulating component 8 removes ionic impurities from the separated mud-water mixture and collects the water after removing ionic impurities.

[0048] S4. The fine particles separated from the drill cuttings waste are washed by the flushing component 9 in conjunction with the circulation component 8. At the same time, the wastewater after flushing is filtered in a secondary circulation. Finally, the flushed drill cuttings particles are dried and graded by the vibrating drying screen 6.

[0049] As one implementation method in this embodiment, such as Figures 1 to 11 As shown, the separation device includes a mounting bracket 1, an mounting barrel 2 mounted on the inner wall of the top of the mounting bracket 1, a hydraulic cylinder 3 mounted on the top of the mounting bracket 1, a motor 4 mounted at the center of the bottom of the mounting barrel 2, a drill cuttings dryer 5 mounted on one side of the inner wall of the mounting bracket 1, a vibrating drying screen 6 mounted on one side of the bottom of the mounting bracket 1, a separation component 7 mounted on the inner wall of the mounting barrel 2, the separation component 7 being used to grade and separate stones in the drill cuttings, a circulation component 8 mounted on one side of the top of the mounting bracket 1, the circulation component 8 being used to recycle water in the drill cuttings, and a rinsing component 9 mounted on the bottom of the mounting barrel 2, the rinsing component 9 being used to rinse the separated drill cuttings particles, the circulation component 8 being located on one side of the separation component 7, and the rinsing component 9 being located at the bottom of the separation component 7.

[0050] By setting up the separation component 7, the non-reusable stones in the drill cuttings waste are separated, ensuring that the separated drill cuttings particles meet the requirements for backfilling and ensuring the compactness of the drill cuttings particle backfill base layer. By setting up the circulation component 8, ionic impurities in the separated mud-water mixture are removed. At the same time, in conjunction with the effect of the flushing component 9, the separated drill cuttings particles are flushed. While ensuring the separation effect of drill cuttings particles, the operating cost is reduced and the sustainability of the separation device is improved. By setting up the flushing component 9, the water filtered by the filter bucket 87 is used to flush the separated drill cuttings particles, avoiding the impact of residual mud and other impurities on the surface of the separated drill cuttings particles on the subsequent backfilling and utilization of drill cuttings particles.

[0051] like Figures 4 to 6 As shown, the separation assembly 7 includes a first separation barrel 71, which is nested at the bottom of the mounting barrel 2. A transmission rod 72 is installed at the bottom of the first separation barrel 71, and the first separation barrel 71 is connected to the motor 4 through the transmission rod 72. A sieve disc 73 is attached to the bottom of the inner wall of the first separation barrel 71, and a mounting plate 74 is installed at the top of the sieve disc 73. The top of the mounting plate 74 is connected to the bottom of the hydraulic cylinder 3. An arc-shaped scraper assembly 75 is installed on one side of the bottom of the mounting plate 74. The number of arc-shaped scraper assemblies 75 is set to multiple, and the multiple arc-shaped scraper assemblies 75 are arranged at equal angles at the bottom of the mounting plate 74. The inner surface of the arc-shaped scraper assembly 75 is flush with the inner surface of the mounting plate 74. The surface of the first separation tank 71 is in contact with the surface of the first separation tank 71. A first discharge ring 76 is in contact with the surface of the top edge of the first separation tank 71. The first discharge ring 76 is installed at the top of the installation tank 2. The outer surface of the arc-shaped scraper assembly 75 is in contact with the second separation tank 77. The second separation tank 77 is installed at the bottom of the inner wall of the installation tank 2. A second discharge ring 78 is installed at the top edge of the second separation tank 77. A screen ring 79 is installed on the surface of the second separation tank 77. A guide ring 710 is installed at the bottom of the screen ring 79. A rigid pipe 711 is connected through one side of the bottom of the guide ring 710. The rigid pipe 711 is nested at the bottom of the installation tank 2. The bottom of the rigid pipe 711 is connected through to the top of the drill slag dryer 5.

[0052] After the drilling cuttings waste enters the first separation tank 71, the operator starts the motor 4. The motor 4 drives the first separation tank 71 to rotate synchronously through the transmission rod 72. As the first separation tank 71 rotates, the drilling cuttings waste inside the first separation tank 71 also rotates. Under the action of centrifugal force, small stones and mud-water mixtures in the drilling cuttings waste enter the space between the first separation tank 71 and the second separation tank 77 through the holes on the surface of the first separation tank 71. At the same time, under the action of the second separation tank 77, small stones in the drilling cuttings waste are trapped in the space between the first separation tank 71 and the second separation tank 77. Meanwhile, mud-water mixtures and fine particles in the drilling cuttings waste enter the space between the second separation tank 77 and the installation tank 2, and enter the guide ring 710 through the screen ring 79. Under the concentrated guiding action of the guide ring 710, mud-water mixtures and fine particles in the drilling cuttings waste enter the drilling cuttings dryer 5 through the rigid pipe 711.

[0053] Meanwhile, large stones are trapped in the first separation barrel 71. Then, the operator starts the hydraulic cylinder 3. The hydraulic cylinder 3 drives the screen plate 73 to slide upward synchronously through the mounting plate 74. As the screen plate 73 slides against the inner wall of the first separation barrel 71, it lifts the large stones trapped in the first separation barrel 71. Due to the inclined angle of the screen plate 73, when the screen plate 73 slides to the top of the first separation barrel 71, under the action of gravity and the inclined angle of the screen plate 73, the large stones on the surface of the screen plate 73 slide along the surface of the screen plate 73. As the large stones slide, they approach and enter the sewage discharge ring 76 and are discharged through the sewage discharge ring 76, thus achieving the screening of large stones in the drilling slag waste.

[0054] Similarly, while the hydraulic cylinder 3 drives the screen plate 73 to slide upward synchronously through the mounting plate 74, the mounting plate 74 drives multiple arc-shaped scraper sets 75 to slide upward synchronously. As the multiple arc-shaped scraper sets 75 slide upward synchronously, they simultaneously lift the small stones trapped between the first separation barrel 71 and the second separation barrel 77. When the arc-shaped scraper sets 75 reach the top edge of the second separation barrel 77, the small stones trapped on the surface of the multiple arc-shaped scraper sets 75 slide into the second sewage discharge ring 78 under the action of gravity and the tilt angle of the surface of the multiple arc-shaped scraper sets 75, and are discharged through the second sewage discharge ring 78, thereby achieving the screening of small stones in the drilling slag waste.

[0055] By setting up the first separation bucket 71 and the second separation bucket 77, large and small stones in the drilling cuttings waste are separated. At the same time, with the lifting effect of the screen plate 73 and the arc scraper group 75, stones that cannot be reused in the drilling cuttings waste are separated, ensuring that the separated drilling cuttings particles meet the backfilling requirements and ensuring the compactness of the drilling cuttings particles backfill base layer.

[0056] like Figures 7 to 8 As shown, the circulation assembly 8 includes a reciprocating lead screw 81, which is mounted on one side of the mounting bracket 1. A pulley set 82 is mounted on the bottom end of the reciprocating lead screw 81. One set of pulleys in the pulley set 82 is mounted on the reciprocating lead screw 81, and the other set of pulleys in the pulley set 82 is sleeved on the surface of the transmission rod 72. A sliding push plate 83 is threaded on the outer surface of the reciprocating lead screw 81. The circulation assembly 8 also includes a liquid storage tank 84. A piston disc 85 is slidably fitted inside the cavity of the liquid storage tank 84, and the top of the piston disc 85 extends out of the liquid storage tank 84. The top of the part is connected to the sliding push plate 83. A one-way valve 86 is installed on one side of the bottom of the liquid storage tank 84. The bottom of the one-way valve 86 is connected to the filter tank 87 through a hose. The filter tank 87 is installed on one side of the inner wall of the mounting bracket 1. A sewage pipe 88 is installed through the top of the filter tank 87. The other end of the sewage pipe 88 is connected to the drill slag dryer 5. Ion exchange resin plates 89 are nested on the inner wall of the filter tank 87. The number of ion exchange resin plates 89 is set to multiple. The multiple ion exchange resin plates 89 are arranged at equal intervals on the inner wall of the filter tank 87.

[0057] Under the action of the drill cuttings dryer 5, the solid particles and liquid in the drill cuttings waste entering the dryer 5 are separated. The separated liquid enters the filter tank 87 through the sewage pipe 88 and passes through multiple ion exchange resin plates 89 in sequence under the action of gravity. Utilizing the physical property that the ion exchange resin plates 89 can exchange with the anions and cations in the water, the ionic impurities in the mud-water mixture are removed by the multiple ion exchange resin plates 89. At the same time, the water after the ionic impurities are removed enters the bottom of the filter tank 87 to stand. After the separation work is completed, the operator can pull out the multiple ion exchange resin plates 89 and rinse them to restore the resin activity and ensure the service life and utilization rate of the ion exchange resin plates 89.

[0058] The separated solid particles enter the rinsing tank 91 through the feed pipe 92 and fall onto the surface of the filter plate 96. At the same time, the transmission rod 72 rotates, driving one set of pulleys in the pulley group 82 to rotate synchronously. This set of pulleys rotates simultaneously, driving another set of pulleys in the pulley group 82 to rotate synchronously via a belt. The rotation of the other set of pulleys drives the reciprocating screw 81 to rotate synchronously, causing the sliding push plate 83, which is threaded on the surface of the reciprocating screw 81, to slide upward along the direction of the reciprocating screw 81. As the sliding push plate 83 slides, it drives the piston disc 85 to slide and draw water in the cavity inside the storage tank 84. Under the suction action of the piston disc 85, the water that is stationary at the bottom of the filter tank 87 is drawn into the storage tank 84 through the one-way valve 86 and the hose.

[0059] When the sliding push plate 83 slides upward into position along the direction of the reciprocating screw 81, under the continuous rotation of the reciprocating screw 81, the sliding push plate 83 slides downward along the direction of the reciprocating screw 81. While the sliding push plate 83 slides, it drives the piston disc 85 to slide and squeeze in the cavity inside the liquid storage tank 84.

[0060] By setting up a filter barrel 87 and multiple ion exchange resin plates 89, ionic impurities in the separated mud-water mixture are removed. At the same time, in conjunction with the effect of the flushing component 9, the separated drill cuttings particles are flushed. This ensures the separation effect of drill cuttings particles while reducing the cost of use and improving the sustainability of the separation device during use.

[0061] like Figures 9 to 11As shown, the rinsing assembly 9 includes a rinsing tank 91, which is installed at the bottom of the mounting tank 2. A feed pipe 92 is installed through one end of the rinsing tank 91, and the other end of the feed pipe 92 is connected to the drill cuttings dryer 5. The rinsing assembly 9 also includes a second one-way valve 93, which is installed through the other side of the bottom of the storage tank 84. A water inlet pipe 94 is connected through the bottom of the second one-way valve 93, and nozzles 95 are installed through the surface of the water inlet pipe 94. The number of nozzles 95 is set to multiple. Multiple nozzles 95 are arranged equidistantly on the surface of the water inlet pipe 94. The nozzles 95 are nested and installed on the inner wall of the rinsing tank 91. The water inlet pipe 94 is connected to the rinsing tank 91 through the nozzles 95. A filter plate 2 96 is installed on the inner wall of the rinsing tank 91. The filter plate 2 96 is made of activated carbon. A sewage pipe 2 97 is installed through the bottom of the rinsing tank 91. The other end of the sewage pipe 2 97 is connected through the filter tank 87. The other end of the rinsing tank 91 is connected through the top of the vibrating drying screen 6.

[0062] Under the squeezing action of the piston disc 85, the water in the storage tank 84 is squeezed into the inlet pipe 94 through the one-way valve 93. Under the continuous squeezing action of the piston disc 85, the water in the inlet pipe 94 is sprayed out through the nozzle 95 to wash the solid particles on the surface of the filter plate 96 and wash away any dirt and other impurities that may remain on the surface of the solid particles. At the same time, the wastewater after washing is filtered through the filter plate 96. The filtered wastewater enters the filter tank 87 through the rinsing tank 91 and continues to pass through multiple ion exchange resin plates 89 to remove ionic impurities in the wastewater for a second time, thus realizing the recycling and filtration of the water.

[0063] Meanwhile, the washed solid particles enter the vibrating drying screen 6, where they are dried and graded to meet the standards for base backfilling, thus achieving the separation and recycling of drilling slag waste.

[0064] By setting up a flushing tank 91, a one-way valve 93, a water inlet pipe 94, and a nozzle 95, the filtered water from the filter tank 87 is used to flush the separated drill cuttings particles, preventing the residual mud and other impurities on the surface of the separated drill cuttings particles from affecting the subsequent backfilling and utilization of the drill cuttings particles.

[0065] The working principle of the technical solution provided by this invention is as follows:

[0066] After the drilling cuttings waste enters the first separation tank 71, the operator starts the motor 4. The motor 4 drives the first separation tank 71 to rotate synchronously through the transmission rod 72. As the first separation tank 71 rotates, the drilling cuttings waste inside the first separation tank 71 also rotates. Under the action of centrifugal force, small stones and mud-water mixtures in the drilling cuttings waste enter the space between the first separation tank 71 and the second separation tank 77 through the holes on the surface of the first separation tank 71. At the same time, under the action of the second separation tank 77, small stones in the drilling cuttings waste are trapped in the space between the first separation tank 71 and the second separation tank 77. Meanwhile, mud-water mixtures and fine particles in the drilling cuttings waste enter the space between the second separation tank 77 and the installation tank 2, and enter the guide ring 710 through the screen ring 79. Under the concentrated guiding action of the guide ring 710, mud-water mixtures and fine particles in the drilling cuttings waste enter the drilling cuttings dryer 5 through the rigid pipe 711.

[0067] Meanwhile, large stones are trapped inside the first separation barrel 71. Then, the operator starts the hydraulic cylinder 3. The hydraulic cylinder 3 drives the screen plate 73 to slide upward synchronously through the mounting plate 74. As the screen plate 73 slides against the inner wall of the first separation barrel 71, it simultaneously lifts the large stones trapped inside the first separation barrel 71. Due to the inclined angle of the screen plate 73, when the screen plate 73 slides to the top of the first separation barrel 71, under the action of gravity and the inclined angle of the screen plate 73, the large stones on the surface of the screen plate 73 slide along the surface of the screen plate 73. As the large stones slide, they approach and enter the sewage discharge ring 76 and are discharged through the sewage discharge ring 76, thus achieving the screening of large stones in the drilling slag waste.

[0068] Similarly, while the hydraulic cylinder 3 drives the screen plate 73 to slide upward synchronously through the mounting plate 74, the mounting plate 74 drives multiple arc-shaped scraper sets 75 to slide upward synchronously. As the multiple arc-shaped scraper sets 75 slide upward synchronously, they simultaneously lift the small stones trapped between the first separation barrel 71 and the second separation barrel 77. When the arc-shaped scraper sets 75 reach the top edge of the second separation barrel 77, the small stones trapped on the surface of the multiple arc-shaped scraper sets 75 slide into the second sewage discharge ring 78 under the action of gravity and the tilt angle of the surface of the multiple arc-shaped scraper sets 75, and are discharged through the second sewage discharge ring 78, thereby achieving the screening of small stones in the drilling slag waste.

[0069] Under the action of the drill cuttings dryer 5, the solid particles and liquid in the drill cuttings waste entering the dryer 5 are separated. The separated liquid enters the filter tank 87 through the sewage pipe 88 and passes through multiple ion exchange resin plates 89 in sequence under the action of gravity. Utilizing the physical property that the ion exchange resin plates 89 can exchange with the anions and cations in the water, the ionic impurities in the mud-water mixture are removed by the multiple ion exchange resin plates 89. At the same time, the water after the ionic impurities are removed enters the bottom of the filter tank 87 to stand. After the separation work is completed, the operator can pull out the multiple ion exchange resin plates 89 and rinse them to restore the resin activity and ensure the service life and utilization rate of the ion exchange resin plates 89.

[0070] The separated solid particles enter the rinsing tank 91 through the feed pipe 92 and fall onto the surface of the filter plate 96. At the same time, the transmission rod 72 rotates, driving one set of pulleys in the pulley group 82 to rotate synchronously. This set of pulleys rotates simultaneously, driving another set of pulleys in the pulley group 82 to rotate synchronously via a belt. The rotation of the other set of pulleys drives the reciprocating screw 81 to rotate synchronously, causing the sliding push plate 83, which is threaded on the surface of the reciprocating screw 81, to slide upward along the direction of the reciprocating screw 81. As the sliding push plate 83 slides, it drives the piston disc 85 to slide and draw water in the cavity inside the storage tank 84. Under the suction action of the piston disc 85, the water that is stationary at the bottom of the filter tank 87 is drawn into the storage tank 84 through the one-way valve 86 and the hose.

[0071] When the sliding push plate 83 slides upward into position along the direction of the reciprocating screw 81, under the continuous rotation of the reciprocating screw 81, the sliding push plate 83 slides downward along the direction of the reciprocating screw 81. While the sliding push plate 83 slides, it drives the piston disc 85 to slide and squeeze in the cavity inside the liquid storage tank 84.

[0072] Under the squeezing action of the piston disc 85, the water in the storage tank 84 is squeezed into the inlet pipe 94 through the one-way valve 93. Under the continuous squeezing action of the piston disc 85, the water in the inlet pipe 94 is sprayed out through the nozzle 95 to wash the solid particles on the surface of the filter plate 96 and wash away any dirt and other impurities that may remain on the surface of the solid particles. At the same time, the wastewater after washing is filtered through the filter plate 96. The filtered wastewater enters the filter tank 87 through the rinsing tank 91 and continues to pass through multiple ion exchange resin plates 89 to remove ionic impurities in the wastewater for a second time, realizing the recycling and filtration of the water.

[0073] Meanwhile, the washed solid particles enter the vibrating drying screen 6, where they are dried and graded to meet the standards for base backfilling, thus achieving the separation and recycling of drilling slag waste.

[0074] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0075] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for separating stone, sand, mud, and water from drilling cuttings based on the principle of centrifugal force, characterized in that, The method for separating rock, sand, mud, and water in drill cuttings based on the principle of centrifugal force includes the following steps: S1. After the drilling waste is collected, it is placed into a separation device, and the solid particles and liquid in the drilling waste are screened by the separation device. S2. After the motor starts, it drives the separation component to operate, screening out the stones in the drill cuttings waste that cannot be reused, and allowing the mud-water mixture and fine particles in the drill cuttings waste to enter the drill cuttings dryer. S3. The drilling slag dryer separates the mud-water mixture and fine particles in the drilling slag waste. At the same time, the circulating component removes ionic impurities from the separated mud-water mixture and collects the water after removing ionic impurities. S4. The fine particles separated from the drill cuttings are washed by the flushing component and the circulation component. At the same time, the wastewater after flushing is filtered in a secondary circulation. Finally, the flushed drill cuttings particles are dried and graded by the vibrating drying screen. The separation device includes a mounting bracket, an mounting barrel mounted on the inner wall of the top of the mounting bracket, a hydraulic cylinder mounted on the top of the mounting bracket, a motor mounted at the center of the bottom of the mounting barrel, a drill cuttings dryer mounted on one side of the inner wall of the mounting bracket, a vibrating drying screen mounted on one side of the bottom of the mounting bracket, a separation component mounted on the inner wall of the mounting barrel for grading and separating stones in the drill cuttings, a circulation component mounted on one side of the top of the mounting bracket for recycling water in the drill cuttings, and a rinsing component mounted on the bottom of the mounting barrel for rinsing the separated drill cuttings particles. The circulation component is located on one side of the separation component, and the rinsing component is located at the bottom of the separation component. The separation assembly includes a first separation tank, which is nested at the bottom of an installation tank. A transmission rod is installed at the bottom of the first separation tank, and the first separation tank is connected to a motor via the transmission rod. A sieve disc is attached to the bottom of the inner wall of the first separation tank, and an installation plate is installed at the top of the sieve disc. The top of the installation plate is connected to the bottom of a hydraulic cylinder. An arc-shaped scraper assembly is installed on one side of the bottom of the installation plate. The number of arc-shaped scraper assemblies is set to multiple, and the multiple arc-shaped scraper assemblies are arranged at equal angles at the bottom of the installation plate. The inner surface of the arc-shaped scraper assembly is in contact with the surface of the first separation tank. A first drain ring is in contact with the surface of the top edge of the first separation tank, and the first drain ring is installed at the top of the installation tank. The outer surface of the arc-shaped scraper assembly contacts the second separation tank. The second separation tank is installed at the bottom of the inner wall of the installation tank. A second sewage discharge ring is installed at the top edge of the second separation tank. A screen ring is installed on the surface of the second separation tank. A guide ring is installed at the bottom of the screen ring. A rigid pipe is connected through one side of the bottom of the guide ring. The rigid pipe is nested at the bottom of the installation tank. The bottom of the rigid pipe is connected through to the top of the drill slag dryer. The rinsing assembly includes a rinsing tank, which is installed at the bottom of the mounting tank. A feed pipe is installed through one end of the rinsing tank, and the other end of the feed pipe is connected to the drill slag dryer. The other end of the rinsing tank is connected through to the top of the vibrating drying screen.

2. The method for separating stone, sand, mud, and water in drilling cuttings based on the principle of centrifugal force according to claim 1, characterized in that, The circulation assembly includes a reciprocating lead screw, which is mounted on one side of the mounting bracket. A pulley set is mounted on the bottom end of the reciprocating lead screw. One set of pulleys in the pulley set is mounted on the reciprocating lead screw, and the other set of pulleys in the pulley set is sleeved on the surface of the transmission rod. A sliding push plate is threaded on the outer surface of the reciprocating lead screw.

3. The method for separating stone, sand, mud, and water in drilling cuttings based on the principle of centrifugal force according to claim 2, characterized in that, The circulation assembly also includes a liquid storage tank, in which a piston disc is slidably fitted inside the cavity of the liquid storage tank. The top of the piston disc extends out of the liquid storage tank and is connected to a sliding push plate. A one-way valve is installed on one side of the bottom of the liquid storage tank. The bottom of the one-way valve is connected to a filter tank via a hose. The filter tank is installed on one side of the inner wall of the mounting bracket.

4. The method for separating stone, sand, mud, and water in drilling cuttings based on the principle of centrifugal force according to claim 3, characterized in that, A sewage pipe is installed through the top of the filter barrel, and the other end of the sewage pipe is connected to the drill slag dryer. Ion exchange resin plates are nested on the inner wall of the filter barrel. The number of ion exchange resin plates is set to multiple, and the multiple ion exchange resin plates are arranged at equal intervals on the inner wall of the filter barrel.

5. The method for separating stone, sand, mud, and water in drilling cuttings based on the principle of centrifugal force according to claim 4, characterized in that, The rinsing assembly also includes a second one-way valve, which is installed through the bottom of the liquid storage tank on the other side. The bottom of the second one-way valve is connected to a water inlet pipe, and a nozzle is installed through the surface of the water inlet pipe. The number of nozzles is set to multiple, and the multiple nozzles are arranged at equal intervals on the surface of the water inlet pipe. The nozzles are nested and installed on the inner wall of the rinsing tank, and the water inlet pipe is connected to the rinsing tank through the nozzles.

6. The method for separating stone, sand, mud, and water in drilling cuttings based on the principle of centrifugal force according to claim 5, characterized in that, A second filter plate is installed on the inner wall of the rinsing tank. The second filter plate is made of activated carbon. A second sewage pipe is installed through the bottom of the rinsing tank, and the other end of the second sewage pipe is connected through the filter tank.

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