Separation method for stone, sand, mud and water in drilling slag based on centrifugal force principle

Abstract

The invention provides a method for separating stones, sand, mud and water in drilling residues based on the centrifugal force principle, and belongs to the technical field of separation. Comprising the following steps that S1, after being collected, drilling slag waste obtained after drilling is intensively put into a separation device, and solid particles and liquid in the drilling slag waste start to be screened through the separation device; s2, after a motor is started, a separation assembly is driven to operate, and stones which cannot be secondarily utilized in the drilling slag waste are screened and discharged; s3, a mud-water mixture and fine particles in the drilling slag waste are separated through a drilling slag spin dryer; and S4, the fine particles separated from the drilling slag waste are flushed through linkage of the flushing assembly and the circulating assembly. By arranging the separation assembly, the effect of separating stones in the drilling slag waste is achieved, by arranging the circulation assembly and the flushing assembly, two-way circulation of'filtration-utilization 'of waste water in the drilling slag waste is achieved, the use cost is reduced, and the sustainability of the separation device during use is improved.

Description

Technical Field

[0001] The invention relates to the technical field of separation, and in particular to a method for separating stone, sand, mud and water in drilling waste based on the principle of centrifugal force. Background Art

[0002] Drilling slag is a waste generated in large quantities during construction activities. Its comprehensive utilization not only helps to reduce environmental pollution, but also promotes the recycling of resources. In many engineering projects, drill slag is usually regarded as a waste that needs to be processed and disposed of, which not only increases the cost of the project, but also causes a waste of resources. Through scientific research and technological innovation, drill slag can be reused as a resource in infrastructure construction such as roadbed filling, which can effectively improve the efficiency of material use. Drilling slag has certain physical and chemical properties. After proper treatment, it can be used as a roadbed material to improve the stability and bearing capacity of the roadbed. Research on the comprehensive utilization of drill slag can not only reduce dependence on traditional roadbed materials, but also provide new performance advantages for roadbed engineering.

[0003] When the drill cuttings are reused, since there are large stones, wood blocks, plastic sheets and other non-rock material impurities in the drill cuttings, it is necessary to screen and remove the large stones and other impurities that cannot be reused before the drill cuttings are reused. At the same time, when the drill cuttings are drilling, there are impurities such as sticky soil residues and soluble salts on the surface of the drill cuttings. The impurities such as soil residues and soluble salts can easily cause the density of the drill cutting particle backfill base to decrease. When the drill cuttings are backfilled, the impurities such as soil residues and soluble salts need to be removed. The existing separation device needs to use a large amount of water to wash the drill cuttings, which consumes water resources, and the separation effect sometimes fails to meet expectations, resulting in an impact on the density of the subsequent drill cutting particle base after backfilling.

[0004] Therefore, the present application provides a method for separating stone, sand, mud and water in drill cuttings based on the principle of centrifugal force to meet the needs. 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 to solve the problem that the existing separation device needs to use a large amount of water to wash the drill cuttings waste, consumes water resources, and the separation effect sometimes fails to meet expectations, thereby affecting the density of the subsequent drill cuttings particle base after backfilling.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for separating stone, sand, mud and water in drill residues based on the principle of centrifugal force, comprising the following steps:

[0007] S1. After the drilling waste is collected, it is concentrated in a separation device, and the solid particles and liquid in the drilling waste are screened by the separation device;

[0008] S2. After the motor is started, the separation component is driven to operate, and the stones that cannot be reused in the drilling waste are screened and discharged, so that the mud-water mixture and fine particles in the drilling waste enter the drilling waste dryer;

[0009] S3, separating the mud-water mixture and fine particles in the drilling waste by means of a drilling waste spin dryer, removing ionic impurities in the separated mud-water mixture by means of a circulation component, and collecting the water after the ionic impurities are removed;

[0010] S4. The fine particles separated from the drill cuttings waste are washed by the flushing component linked to the circulation component, and the waste water after washing is filtered for a second cycle. Finally, the washed drill cuttings particles are dried and graded by a vibrating drying screen.

[0011] Optionally, the separation device includes a mounting bracket, a mounting barrel is mounted on the inner wall at the top of the mounting bracket, a hydraulic cylinder is mounted on the top of the mounting bracket, a motor is mounted at the center of the bottom end of the mounting barrel, a drill cuttings dryer is mounted on one side of the inner wall of the mounting bracket, a vibrating drying screen is mounted on one side of the bottom end of the mounting bracket, and also includes a separation component, a separation component is mounted on the inner wall of the mounting barrel, the separation component is used to grade and separate stones in the drill cuttings, a circulation component, a circulation component is mounted on one side of the top of the mounting bracket, the circulation component is used to recycle water in the drill cuttings; a flushing component, a flushing component is mounted on the bottom end of the mounting barrel, the flushing component is used to flush separated drill cuttings particles, the circulation component is located on one side of the separation component, and the flushing component is located at the bottom of the separation component.

[0012] Optionally, the separation assembly includes a first separation barrel, the bottom of the first separation barrel is nested and installed in the bottom of the mounting barrel, a transmission rod is installed at the bottom of the first separation barrel, the first separation barrel is connected to the motor through the transmission rod, a sieve plate is attached to the bottom end of the inner wall of the first separation barrel, a mounting plate is installed at the top of the sieve plate, the top of the mounting plate is connected to the bottom end of the hydraulic cylinder, an arc scraper group is installed on one side of the bottom end of the mounting plate, the number of the arc scraper groups is set to multiple, and the multiple arc scraper groups are arranged at equal angles at the bottom end of the mounting plate, the inner surface of the arc scraper group contacts the surface of the first separation barrel, and the surface at the top edge of the first separation barrel contacts a sewage discharge ring, which is installed on the top of the mounting barrel.

[0013] Optionally, the outer surface of the arc scraper group contacts with a second separation barrel, the second separation barrel is installed at the bottom end of the inner wall of the mounting barrel, a sewage ring 2 is installed at the top edge of the second separation barrel, a screen ring is installed on the surface of the second separation barrel, a guide ring is installed at the bottom end of the screen ring, a hard pipe is connected to one side of the bottom end of the guide ring, the hard pipe is nested in the bottom end of the mounting barrel, and the bottom end of the hard pipe is connected to the top of the drill slag dryer.

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

[0015] Optionally, the circulation component also includes a liquid storage barrel, a piston disk slidingly fits in the internal cavity of the liquid storage barrel, the top of the piston disk extends out of the top of the liquid storage barrel and is connected to the sliding push plate, a one-way valve is installed on one side of the bottom end of the liquid storage barrel, the bottom end of the one-way valve is connected to a filter barrel through a hose, and the filter barrel 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 a drilling slag dryer. Ion exchange resin plates are nested and installed on the inner wall of the filter barrel. The number of the ion exchange resin plates is set to multiple, and the multiple ion exchange resin plates are arranged equidistantly on the inner wall of the filter barrel.

[0017] Optionally, the flushing assembly includes a flushing bucket, which is installed at the bottom of the installation bucket. A feed pipe is installed through one end of the flushing bucket, and the other end of the feed pipe is connected to a drilling slag dryer.

[0018] Optionally, the flushing component also includes a one-way valve 2, which is installed on the other side of the bottom end of the liquid storage barrel. The bottom end of the one-way valve 2 is connected to a water inlet pipe, and a nozzle is installed on the surface of the water inlet pipe. The number of the nozzles is set to multiple, and the multiple nozzles are arranged equidistantly on the surface of the water inlet pipe. The nozzles are nested and installed on the inner wall of the flushing barrel, and the water inlet pipe is connected to the flushing barrel through the nozzle.

[0019] Optionally, a filter plate 2 is installed on the inner wall of the flushing bucket, and the material of the filter plate 2 is set to activated carbon material. A sewage pipe 2 is installed through the bottom of the flushing bucket, and the other end of the sewage pipe 2 is connected to the filter bucket. The other end of the flushing bucket is connected to 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, through the cooperation between the first separation barrel and the second separation barrel, the separation of large stones and small stones in the drill cutting waste is achieved, and at the same time, with the lifting effect of the sieve plate and the arc scraper group, the surface of the sieve plate and the arc scraper group is specially designed to have a certain inclination angle, and at the same time, with the effect of gravity, the separation effect of stones that are difficult to reuse in the drill cutting waste is achieved, and the difference in stone size is screened, further ensuring the screening effect of stones in the drill cutting waste, ensuring that the separated drill cutting particles meet the backfill utilization requirements, further ensuring the backfill effect of the drill cutting particles during backfilling, and ensuring the density of the drill cutting particle backfill base.

[0022] By setting up a circulation component, using a filter barrel and multiple ion exchange resin plates, the ionic impurities in the separated mud-water mixture are removed, and the water after the impurities are removed is collected centrally through the filter barrel. At the same time, the liquid storage barrel, the piston disc and the one-way valve are coordinated to realize liquid exchange between the liquid storage barrel and the filter barrel, and the water in the filter barrel is recycled. At the same time, with the effect of the flushing component, the separated drill cuttings particles are flushed, and the waste water after flushing is collected and filtered for the second time, so as to realize the two-way circulation of "filtration-utilization" of wastewater in the drill cutting waste, reduce the use cost while ensuring the separation effect of the drill cuttings particles, and improve the sustainability of the separation device when used.

[0023] By setting up a flushing component, the separated drill cuttings particles are flushed using the water filtered by the filter barrel, so as to avoid the soil and other impurities remaining on the surface of the separated drill cuttings particles affecting the subsequent backfilling of the drill cuttings particles, further ensure the screening effect of the drill cuttings particles, and at the same time improve the processing yield rate of the separated drill cuttings particles, and ensure the density of the subsequent drill cuttings particle base after backfilling. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0027] Figure 3 It is a bottom view structural schematic diagram of the separation device of the present invention;

[0028] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a separation component of the present invention;

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

[0030] Figure 6 It is a schematic diagram of the structure of the first separation barrel, the transmission rod, the sieve plate, the arc-shaped scraper group and the second separation barrel of the present invention;

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

[0032] Figure 8 It is a schematic diagram of a partial cross-sectional structure of a circulation component of the present invention;

[0033] Fig. 9 This is a schematic diagram of the linkage structure of the circulation component and the flushing component of the present invention;

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

[0035] Fig.11 It is a schematic diagram of the structure of some components of the flushing component of the present invention.

[0036] Reference numerals:

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

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0039] The following is a detailed description of a method for separating stone, sand, mud and water from drill cuttings based on the centrifugal force principle provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0040] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

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

[0042] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0043] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0044] The embodiment of the present invention provides a method for separating stone, sand, mud and water in drilling waste based on the principle of centrifugal force, comprising the following steps:

[0045] S1. After the drilling waste is collected, it is concentrated in a separation device, and the solid particles and liquid in the drilling waste are screened by the separation device;

[0046] S2, after the motor 4 is started, the separation component 7 is driven to operate, and the stones that cannot be reused in the drilling waste are screened and discharged, so that the mud-water mixture and fine particles in the drilling waste enter the drilling waste dryer 5;

[0047] S3, separating the muddy water mixture and fine particles in the drilling waste by the drilling waste dryer 5, removing ionic impurities in the separated muddy water mixture by the circulation component 8, and collecting the water after the ionic impurities are removed;

[0048] S4, the fine particles separated from the drill cuttings waste are washed by the washing component 9 linked to the circulation component 8, and the waste water after washing is filtered for secondary circulation, and finally the washed drill cuttings particles are dried and graded by the vibration drying screen 6.

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

[0050] By setting up the separation component 7, the separation effect of the stones that cannot be reused in the drill cuttings waste is achieved, ensuring that the separated drill cuttings particles meet the backfill utilization requirements and ensuring the density of the drill cuttings particle backfill base. By setting up the circulation component 8, the ionic impurities in the mud-water mixture after separation are removed, and at the same time, with the effect of the flushing component 9, the separated drill cuttings particles are flushed, while ensuring the separation effect of the drill cuttings particles, the use cost is reduced, and the sustainability of the separation device during use is improved. By setting up the flushing component 9, the separated drill cuttings particles are flushed using the water filtered by the filter barrel 87, so as to avoid the residual soil and other impurities on the surface of the separated drill cuttings particles affecting the subsequent backfill utilization of the drill cuttings particles.

[0051] like Figures 4 to 6 As shown, the separation component 7 includes a first separation barrel 71, the bottom of the first separation barrel 71 is nested and installed at the bottom of the mounting barrel 2, a transmission rod 72 is installed at the bottom of the first separation barrel 71, the first separation barrel 71 is connected to the motor 4 through the transmission rod 72, a sieve plate 73 is attached to the bottom end of the inner wall of the first separation barrel 71, a mounting plate 74 is installed at the top of the sieve plate 73, the top of the mounting plate 74 is connected to the bottom end of the hydraulic cylinder 3, an arc scraper group 75 is installed on one side of the bottom end of the mounting plate 74, the number of the arc scraper groups 75 is set to multiple, the multiple arc scraper groups 75 are arranged at equal angles at the bottom end of the mounting plate 74, and the inner surface of the arc scraper group 75 is parallel to the bottom end of the mounting plate 74. The surfaces of the first separation barrel 71 are in contact with each other, and the surface of the top edge of the first separation barrel 71 is in contact with a sewage ring 76, which is installed on the top of the installation barrel 2. The outer surface of the arc scraper group 75 is in contact with the second separation barrel 77, and the second separation barrel 77 is installed at the bottom end of the inner wall of the installation barrel 2. A sewage ring 78 is installed at the top edge of the second separation barrel 77. A sieve ring 79 is installed on the surface of the second separation barrel 77, and a guide ring 710 is installed at the bottom end of the sieve ring 79. A hard pipe 711 is connected to one side of the bottom end of the guide ring 710, and the hard pipe 711 is nested in the bottom end of the installation barrel 2. The bottom end of the hard pipe 711 is connected to the top of the drilling slag dryer 5.

[0052] After the drilling waste enters the first separation barrel 71, the operator starts the motor 4, and the motor 4 drives the first separation barrel 71 to rotate synchronously through the transmission rod 72. When the first separation barrel 71 rotates, the drilling waste is driven to rotate in the first separation barrel 71. Under the action of centrifugal force, small stones and mud-water mixture in the drilling waste pass through the holes on the surface of the first separation barrel 71 and enter the space between the first separation barrel 71 and the second separation barrel 77. At the same time, under the action of the second separation barrel 77, the small stones in the drilling waste are trapped in the space between the first separation barrel 71 and the second separation barrel 77. At the same time, the mud-water mixture and fine particles in the drilling waste enter the space between the second separation barrel 77 and the installation barrel 2, and enter the guide ring 710 through the sieve ring 79. Under the centralized diversion effect of the guide ring 710, the mud-water mixture and fine particles in the drilling waste enter the drilling waste dryer 5 through the hard pipe 711.

[0053] At the same time, the large rocks are trapped in the first separation barrel 71, and then the operator starts the hydraulic cylinder 3, which drives the sieve plate 73 to slide upward synchronously through the mounting plate 74. The sieve plate 73 slides against the inner wall of the first separation barrel 71 and simultaneously lifts the large rocks trapped in the first separation barrel 71. Since the surface of the sieve plate 73 has an inclination angle, when the sieve plate 73 slides to the top of the first separation barrel 71, under the action of gravity and the inclination angle of the surface of the sieve plate 73, the large rocks on the surface of the sieve plate 73 slide along the surface of the sieve plate 73, and the large rocks slide close to and enter the sewage ring 76, and are discharged through the sewage ring 76, thereby realizing the screening of large rocks in the drilling waste.

[0054] Similarly, while the hydraulic cylinder 3 drives the sieve plate 73 to slide upward synchronously through the mounting plate 74, the mounting plate 74 drives the multiple arc scraper groups 75 to slide up synchronously. While the multiple arc scraper groups 75 slide up synchronously, the small stones trapped between the first separation barrel 71 and the second separation barrel 77 are lifted synchronously. When the arc scraper groups 75 reach the top edge of the second separation barrel 77, the small stones trapped on the surface of the multiple arc scraper groups 75 slide into the discharge ring 2 78 under the action of gravity and the inclination angle of the surface of the multiple arc scraper groups 75, and are discharged through the discharge ring 2 78, thereby realizing the screening of small stones in the drilling waste.

[0055] By setting up the first separation barrel 71 and the second separation barrel 77, the large stones and small stones in the drill cutting waste can be separated. At the same time, the lifting effect of the sieve plate 73 and the arc scraper group 75 can be used to separate the stones in the drill cutting waste that cannot be reused, thereby ensuring that the separated drill cutting particles meet the backfill utilization requirements and ensuring the density of the drill cutting particle backfill base.

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

[0057] Under the action of the drilling slag dryer 5, the solid particles and liquid in the drilling slag waste entering the drilling slag dryer 5 are separated, and the separated liquid enters the filter barrel 87 through the sewage pipe 88, and under the action of gravity, passes through multiple ion exchange resin plates 89 in sequence. The physical property of the ion exchange resin plates 89 that can exchange anions and cations in water is utilized to remove ionic impurities in the mud-water mixture through 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 barrel 87 and stands still. At the same time, after the separation work is completed, the operator can extract the multiple ion exchange resin plates 89, and after rinsing the ion exchange resin plates 89, the resin activity is restored to ensure the service life and utilization rate of the ion exchange resin plates 89.

[0058] The separated solid particles enter the flushing barrel 91 through the feed pipe 92 and fall onto the surface of the second filter plate 96. At the same time, the transmission rod 72 rotates and drives one group of pulleys in the pulley group 82 to rotate synchronously. When this group of pulleys rotates, it drives another group of pulleys in the pulley group 82 to rotate synchronously through the belt. When the other group of pulleys rotates, it drives the reciprocating screw 81 to rotate synchronously, so that the sliding push plate 83 threadedly sleeved on the surface of the reciprocating screw 81 slides upward in the direction of the reciprocating screw 81. When the sliding push plate 83 slides, it drives the piston disc 85 to slide and suck in the internal cavity of the liquid storage barrel 84. Under the suction action of the piston disc 85, the water stationary at the bottom of the filter barrel 87 is sucked into the liquid storage barrel 84 through the one-way valve 1 86 and the hose.

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

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

[0061] like Figures 9 to 11As shown, the flushing assembly 9 includes a flushing bucket 91, which is installed at the bottom of the installation bucket 2, and a feed pipe 92 is installed through one end of the flushing bucket 91, and the other end of the feed pipe 92 is connected to the drilling slag dryer 5. The flushing assembly 9 also includes a check valve 93, which is installed through the other side of the bottom of the liquid storage barrel 84, and the bottom of the check valve 93 is connected through a water inlet pipe 94, and a nozzle 95 is installed through the surface of the water inlet pipe 94, and the number of nozzles 95 is set to multiple A plurality of nozzles 95 are arranged equidistantly on the surface of the water inlet pipe 94, and the nozzles 95 are nested and installed on the inner wall of the flushing barrel 91. The water inlet pipe 94 is connected to the flushing barrel 91 through the nozzles 95. A filter plate 96 is installed on the inner wall of the flushing barrel 91. The material of the filter plate 96 is set to activated carbon material. A sewage pipe 97 is installed through the bottom of the flushing barrel 91, and the other end of the sewage pipe 97 is connected to the filter barrel 87. The other end of the flushing barrel 91 is connected to the top of the vibrating drying screen 6.

[0062] Under the squeezing action of the piston disc 85, the water in the liquid storage barrel 84 is squeezed into the water inlet pipe 94 through the one-way valve 93, and under the continuous squeezing of the piston disc 85, the water in the water inlet pipe 94 is sprayed out through the nozzle 95 to wash the solid particles on the surface of the filter plate 96, and the soil and other impurities that may remain on the surface of the solid particles. At the same time, the washed wastewater is filtered through the filter plate 96, and the filtered wastewater enters the filter barrel 87 through the flushing barrel 91, and continues to pass through multiple ion exchange resin plates 89 to remove ion impurities in the wastewater for a second time, so as to realize the circulation and filtration of water.

[0063] At the same time, the washed solid particles enter the vibrating drying screen 6, and are dried and graded by the vibrating drying screen 6, so that the solid particles meet the standards of base backfill, and the separation and recycling of drilling waste is realized.

[0064] By providing a flushing barrel 91, a one-way valve 93, a water inlet pipe 94 and a nozzle 95, the separated drill cuttings particles are flushed using the water filtered by the filter barrel 87, thereby preventing the soil and other impurities remaining on the surface of the separated drill cuttings particles from affecting the subsequent backfilling of the drill cuttings particles.

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

[0066] After the drilling waste enters the first separation barrel 71, the operator starts the motor 4, and the motor 4 drives the first separation barrel 71 to rotate synchronously through the transmission rod 72. When the first separation barrel 71 rotates, it drives the drilling waste to rotate in the first separation barrel 71. Under the action of centrifugal force, small stones and mud-water mixture in the drilling waste pass through the holes on the surface of the first separation barrel 71 and enter the space between the first separation barrel 71 and the second separation barrel 77. At the same time, under the action of the second separation barrel 77, the small stones in the drilling waste are trapped in the space between the first separation barrel 71 and the second separation barrel 77. At the same time, the mud-water mixture and fine particles in the drilling waste enter the space between the second separation barrel 77 and the installation barrel 2, and enter the guide ring 710 through the sieve ring 79. Under the centralized diversion effect of the guide ring 710, the mud-water mixture and fine particles in the drilling waste enter the drilling waste dryer 5 through the hard pipe 711.

[0067] At the same time, large rocks are trapped in the first separation barrel 71, and then the operator starts the hydraulic cylinder 3. The hydraulic cylinder 3 drives the sieve plate 73 to slide upward synchronously through the mounting plate 74. The sieve plate 73 slides against the inner wall of the first separation barrel 71 and simultaneously lifts the large rocks trapped in the first separation barrel 71. Since there is an inclination angle on the surface of the sieve plate 73, when the sieve plate 73 slides to the top of the first separation barrel 71, under the action of gravity and the inclination angle of the surface of the sieve plate 73, the large rocks on the surface of the sieve plate 73 slide along the surface of the sieve plate 73, and while sliding, the large rocks approach and enter the sewage ring 76 and are discharged through the sewage ring 76, thereby realizing the screening of large rocks in the drilling waste.

[0068] Similarly, while the hydraulic cylinder 3 drives the sieve plate 73 to slide upward synchronously through the mounting plate 74, the mounting plate 74 drives the multiple arc scraper groups 75 to slide up synchronously. While the multiple arc scraper groups 75 slide up synchronously, the small stones trapped between the first separation barrel 71 and the second separation barrel 77 are lifted synchronously. When the arc scraper groups 75 reach the top edge of the second separation barrel 77, the small stones trapped on the surface of the multiple arc scraper groups 75 slide into the discharge ring 2 78 under the action of gravity and the inclination angle of the surface of the multiple arc scraper groups 75, and are discharged through the discharge ring 2 78, thereby realizing the screening of small stones in the drilling waste.

[0069] Under the action of the drilling slag dryer 5, the solid particles and liquid in the drilling slag waste entering the drilling slag dryer 5 are separated, and the separated liquid enters the filter barrel 87 through the sewage pipe 88, and under the action of gravity, passes through multiple ion exchange resin plates 89 in sequence. The physical property of the ion exchange resin plates 89 that can exchange anions and cations in water is utilized to remove ionic impurities in the mud-water mixture through 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 barrel 87 and stands still. At the same time, after the separation work is completed, the operator can extract the multiple ion exchange resin plates 89, and after rinsing the ion exchange resin plates 89, the resin activity is restored to ensure the service life and utilization rate of the ion exchange resin plates 89.

[0070] The separated solid particles enter the flushing barrel 91 through the feed pipe 92 and fall onto the surface of the second filter plate 96. At the same time, the transmission rod 72 rotates and drives one group of pulleys in the pulley group 82 to rotate synchronously. When this group of pulleys rotates, it drives another group of pulleys in the pulley group 82 to rotate synchronously through the belt. When the other group of pulleys rotates, it drives the reciprocating screw 81 to rotate synchronously, so that the sliding push plate 83 threadedly sleeved on the surface of the reciprocating screw 81 slides upward in the direction of the reciprocating screw 81. When the sliding push plate 83 slides, it drives the piston disc 85 to slide and suck in the internal cavity of the liquid storage barrel 84. Under the suction action of the piston disc 85, the water stationary at the bottom of the filter barrel 87 is sucked into the liquid storage barrel 84 through the one-way valve 1 86 and the hose.

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

[0072] Under the squeezing action of the piston disc 85, the water in the liquid storage barrel 84 is squeezed into the water inlet pipe 94 through the one-way valve 93, and under the continuous squeezing of the piston disc 85, the water in the water inlet pipe 94 is sprayed out through the nozzle 95 to rinse the solid particles on the surface of the filter plate 96, and the soil and other impurities that may remain on the surface of the solid particles. At the same time, the flushed wastewater is filtered through the filter plate 96, and the filtered wastewater enters the filter barrel 87 through the flushing barrel 91, and continues to pass through multiple ion exchange resin plates 89 to perform secondary removal of ionic impurities in the wastewater, thereby realizing the circulating filtration and utilization of water.

[0073] At the same time, the washed solid particles enter the vibrating drying screen 6, and are dried and graded by the vibrating drying screen 6, so that the solid particles meet the standards of base backfill, and the separation and recycling of drilling waste is realized.

[0074] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0075] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for separating stone, sand, mud and water in drilling waste based on the principle of centrifugal force, characterized in that: The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle comprises the following steps: S1. After the drilling waste is collected, it is concentrated in a separation device, and the solid particles and liquid in the drilling waste are screened by the separation device; S2. After the motor is started, the separation component is driven to operate, and the stones that cannot be reused in the drilling waste are screened and discharged, so that the mud-water mixture and fine particles in the drilling waste enter the drilling waste dryer; S3, separating the mud-water mixture and fine particles in the drilling waste by means of a drilling waste spin dryer, removing ionic impurities in the separated mud-water mixture by means of a circulation component, and collecting the water after the ionic impurities are removed; S4. The fine particles separated from the drill cuttings waste are washed by the flushing component linked to the circulation component, and the waste water after washing is filtered for a second cycle. Finally, the washed drill cuttings particles are dried and graded by a vibrating drying screen.

2. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 1 is characterized in that: The separation device includes a mounting bracket, a mounting barrel is mounted on the inner wall at the top of the mounting bracket, a hydraulic cylinder is mounted on the top of the mounting bracket, a motor is mounted at the center of the bottom end of the mounting barrel, a cuttings spin dryer is mounted on one side of the inner wall of the mounting bracket, a vibrating drying screen is mounted on one side of the bottom end of the mounting bracket, and also includes a separation component, a separation component is mounted on the inner wall of the mounting barrel, the separation component is used to grade and separate stones in the cuttings, a circulation component, a circulation component is mounted on one side of the top of the mounting bracket, the circulation component is used to recycle water in the cuttings; a flushing component, a flushing component is mounted on the bottom end of the mounting barrel, the flushing component is used to flush separated cuttings particles, the circulation component is located on one side of the separation component, and the flushing component is located at the bottom of the separation component.

3. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 2 is characterized in that: The separation component includes a first separation barrel, the bottom of the first separation barrel is nested and installed in the bottom of the mounting barrel, a transmission rod is installed at the bottom of the first separation barrel, the first separation barrel is connected to the motor through the transmission rod, a sieve plate is attached to the bottom end of the inner wall of the first separation barrel, a mounting plate is installed at the top of the sieve plate, the top of the mounting plate is connected to the bottom end of the hydraulic cylinder, an arc scraper group is installed on one side of the bottom end of the mounting plate, the number of the arc scraper groups is set to multiple, and the multiple arc scraper groups are arranged at equal angles at the bottom end of the mounting plate, the inner surface of the arc scraper group contacts the surface of the first separation barrel, and the surface at the top edge of the first separation barrel contacts a sewage discharge ring, and the sewage discharge ring is installed at the top of the mounting barrel.

4. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 3 is characterized in that: The outer surface of the arc scraper group contacts with a second separation barrel, the second separation barrel is installed at the bottom end of the inner wall of the installation barrel, a sewage ring 2 is installed at the top edge of the second separation barrel, a screen ring is installed on the surface of the second separation barrel, a guide ring is installed at the bottom end of the screen ring, a hard pipe is connected to one side of the bottom end of the guide ring, the hard pipe is nested in the bottom end of the installation barrel, and the bottom end of the hard pipe is connected to the top of the drilling slag dryer.

5. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 4 is characterized in that: The circulation component includes a reciprocating screw, which is installed on one side of the mounting bracket. A pulley group is installed at the bottom end of the reciprocating screw. One group of pulleys in the pulley group is installed on the reciprocating screw, and the other group of pulleys in the pulley group is sleeved on the surface of the transmission rod. A sliding push plate is threadedly sleeved on the outer surface of the reciprocating screw.

6. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 5, characterized in that: The circulation component also includes a liquid storage barrel, a piston disk is slidably fitted in the internal cavity of the liquid storage barrel, the top of the piston disk extends out of the top of the liquid storage barrel and is connected to the sliding push plate, a one-way valve is installed on one side of the bottom end of the liquid storage barrel, the bottom end of the one-way valve is connected to a filter barrel through a hose, and the filter barrel is installed on one side of the inner wall of the mounting bracket.

7. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 6, 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 a drilling slag dryer. Ion exchange resin plates are nested and installed on the inner wall of the filter barrel. The number of the ion exchange resin plates is set to multiple, and the multiple ion exchange resin plates are arranged equidistantly on the inner wall of the filter barrel.

8. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 7, characterized in that: The flushing assembly comprises a flushing bucket, which is installed at the bottom of the installation bucket. A feed pipe is installed through one end of the flushing bucket, and the other end of the feed pipe is connected to a drilling slag dryer.

9. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 8, characterized in that: The flushing component also includes a second one-way valve, which is installed on the other side of the bottom of the liquid storage barrel. The bottom of the second one-way valve is connected to a water inlet pipe, and a nozzle is installed on the surface of the water inlet pipe. The number of the nozzles is set to be multiple, and the multiple nozzles are arranged equidistantly on the surface of the water inlet pipe. The nozzles are nested and installed on the inner wall of the flushing barrel, and the water inlet pipe is connected to the flushing barrel through the nozzle.

10. The method for separating stone, sand, mud and water in drilling waste based on the centrifugal force principle according to claim 9, characterized in that: The inner wall of the flushing bucket is installed with a filter plate 2, the material of the filter plate 2 is set to be activated carbon material, the bottom of the flushing bucket is installed with a sewage pipe 2, the other end of the sewage pipe 2 is connected to the filter bucket, and the other end of the flushing bucket is connected to the top of the vibration drying screen.

Images