A water-based drilling cuttings treatment spin dryer

Abstract

The utility model discloses a kind of water-based drillings processing spin-drying machine, it is related to petroleum exploitation technical field, the utility model includes spin-drying machine main body and auger elevator, support is connected outside auger elevator, and support back one side is equipped with servo motor, servo motor output end and support back one side are evenly connected with support shaft, and support shaft outer part is respectively sleeved with first shunt plate and gear, first shunt plate one side below fixed also second shunt plate.The utility model passes through first shunt plate and second shunt plate, first shunt plate can directly receive the cylindrical powder material discharged by auger elevator, preliminary separation is carried out to powder material, break single cylindrical conveying mode, lay foundation for subsequent dispersion;And the slope structure of multiple second shunt plate top can play the guiding role to the powder material after preliminary separation;Through dispersed discharging, reduce material pile tip height, improve space utilization and reduce subsequent collapse scattering gap.

Description

Technical Field

[0001] This utility model relates to the field of petroleum extraction technology, specifically to a water-based drill cuttings drying machine. Background Technology

[0002] In oil drilling operations, water-based drilling fluids are often used to cool the drill bit, carry rock cuttings, and stabilize the wellbore. Water-based drill cuttings are the main solid waste generated during the drilling process. Their core components include rock fragments, residual water-based drilling fluid components, and a certain amount of water. They are generally wet and slightly viscous. If they are discharged directly without proper treatment, they can easily pollute the soil and water bodies. Therefore, they need to be treated by specialized equipment before disposal or recycling.

[0003] Spin-drying is a key step in the water-based drill cuttings processing flow. Its core purpose is to achieve solid-liquid separation of water-based drill cuttings through a spin dryer: the water-based drill cuttings to be processed are fed into the main equipment from the inlet of the spin dryer. Using the centrifugal force or squeezing action inside the spin dryer, the liquid phase in the drill cuttings is discharged from the liquid phase outlet, while the solid phase drill cuttings form a powder with low moisture content, which is discharged through the solid phase outlet. Some spin dryers are equipped with an auger elevator, which transports the material to the subsequent material bin or conveying equipment.

[0004] Currently, in the subsequent powder conveying and loading stages of the cyclone dryer used for water-based drill cuttings processing, the powder discharged from the cyclone dryer, after being conveyed by the auger elevator, often falls directly into the truck bed or hopper in a columnar shape. Due to the fluidity and accumulation characteristics of the powder itself, it is easy to form a triangular pile. If loading is stopped in advance to avoid the pile becoming too high and collapsing, it will result in a large waste of internal space in the hopper. If it is forcibly filled to utilize the space, the top of the pile will be too high. During forklift transfer and truck transportation, the pile is easily collapsed due to bumps, vibrations and inertia, causing the powder to scatter. This not only causes material loss but also increases on-site cleanup costs. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a water-based drill cuttings drying machine to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water-based drill cuttings drying machine, comprising a drying machine body and an auger lifter, wherein a bracket is externally connected to the auger lifter, and a servo motor is installed on one side of the back of the bracket, and a support shaft is connected to both the output end of the servo motor and one side of the back of the bracket, and a first diverter plate and a gear are respectively sleeved on the outside of the support shaft, and a second diverter plate is fixed below one side of the first diverter plate.

[0007] By adopting the above technical solution, the servo motor can drive the first diverter plate to move through the support shaft, and the gear assists in adjusting the movement state of the diverter plate. The first diverter plate and the second diverter plate cooperate to receive the columnar powder discharged by the auger elevator, providing structural support for breaking the triangular accumulation of powder and achieving uniform spreading. This solves the core problem of concentrated powder accumulation in the existing technology from a hardware perspective.

[0008] Furthermore, the support shaft is rotatably connected to the bracket via bearings.

[0009] By adopting the above technical solution, the bearing can significantly reduce the rotational friction resistance between the support shaft and the bracket, ensuring that the support shaft can rotate flexibly and stably under the drive of the servo motor, avoiding jamming or wear of the support shaft due to excessive friction, thereby ensuring that the first diverter plate can continuously and smoothly perform the diversion action, and maintaining the stability of powder separation and spreading effect.

[0010] Furthermore, multiple second diverter plates are provided, and the tops of the multiple second diverter plates are all sloped.

[0011] By adopting the above technical solution, multiple second diversion plates can expand the powder receiving and diffusion range, avoiding powder accumulation in only local areas; the sloping structure at the top can guide the powder after the initial separation by the first diversion plate, guiding the powder to flow to both sides along the slope instead of falling vertically to form a concentrated pile, providing a guiding basis for the uniform diffusion of powder to different areas of the hopper or carriage, and further reducing the triangular accumulation phenomenon.

[0012] Furthermore, the two gears mesh with each other.

[0013] By adopting the above technical solution, gear meshing can realize the synchronous linkage of the two support shafts, ensuring that the first diverter plates driven by the two support shafts can maintain a state of motion with opposite directions but synchronized speeds. This avoids the powder from shifting and accumulating in the same direction due to the same direction of the diverter plates, and also prevents uneven powder separation due to inconsistent speeds. This ensures the uniformity of the initial separation of columnar powder by the first diverter plate, laying a uniform foundation for the subsequent dispersion effect of the second diverter plate.

[0014] Furthermore, the top of the spin dryer body is connected to a feed inlet, both sides of the spin dryer body are connected to liquid phase outlets, the bottom of the spin dryer body is connected to a solid phase outlet, and the solid phase outlet is connected to the auger elevator.

[0015] By adopting the above technical solution, the feed inlet provides a channel for water-based drill cuttings to enter the main body of the dryer, the liquid phase outlet can discharge the water and soluble drilling fluid components separated during the drying process in a timely manner, and the solid phase outlet transports the powder with reduced water content to the screw conveyor, realizing the basic solid-liquid separation of water-based drill cuttings and the directional conveying of solid powder, providing a source of powder to be processed for the subsequent diversion structure.

[0016] Furthermore, a protective shell is bolted to the outer surface of the bracket, and an EPDM rubber sealing gasket is provided between the protective shell and the bracket. The protective shell is detachably connected to the bracket.

[0017] By adopting the above technical solutions, the protective shell can provide physical protection for the transmission components such as gears and support shafts inside the bracket, reducing direct contact between external dust and moisture and the components; the EPDM rubber sealing gasket can enhance the sealing effect between the protective shell and the bracket, further reducing the impact of dust and moisture on the gear meshing accuracy and the rotational stability of the support shaft; the detachable design with bolted connections facilitates the subsequent disassembly of the protective shell for inspection or maintenance of the internal transmission components, balancing protection and maintenance convenience.

[0018] Furthermore, the top of the bracket is in the shape of a clamp, and the bracket is detachably connected to the top of the flange plate of the auger elevator outlet by bolts.

[0019] By adopting the above technical solution, the clamp-like structure can form a close fit with the outer ring of the auger elevator outlet, and the flange plate supports the bottom of the bracket to achieve an axial limiting effect, improving the stability of the connection between the bracket and the auger elevator and preventing the bracket from shifting due to vibration during equipment operation; the detachable design of the bolt connection ensures reliable connection and facilitates subsequent disassembly of the bracket according to maintenance needs, taking into account both assembly stability and operational flexibility.

[0020] Furthermore, the gear is detachably connected to the support shaft via a key connection, and one of the support shafts is detachably connected to the servo motor via a coupling.

[0021] By adopting the above technical solutions, the key connection can realize synchronous transmission between the gear and the support shaft, while retaining detachability. When the gear wears or is damaged in the future, the gear can be directly disassembled and replaced without replacing the entire support shaft. The coupling connection can realize the power transmission between the support shaft and the servo motor, while facilitating the separation of the two. When the servo motor needs to be repaired or the support shaft needs to be maintained, the two can be quickly separated, reducing the complexity of maintenance operations and improving maintenance efficiency.

[0022] Furthermore, the support shaft has a square cross-section, and the first diverter plate is detachably connected to the support shaft.

[0023] By adopting the above technical solution, the square cross section can prevent the first diverter plate from slipping relative to the support shaft during rotation, ensuring that the rotation of the support shaft can be fully transmitted to the first diverter plate, thus guaranteeing the synchronicity and stability of the diversion action of the first diverter plate; the detachable design facilitates subsequent cleaning and maintenance of the diverter plate according to the characteristics of the powder, taking into account both transmission reliability and usage flexibility.

[0024] In summary, the present invention has the following main advantages: 1. This utility model utilizes a first diversion plate and a second diversion plate. The first diversion plate directly receives the columnar powder discharged from the auger elevator, performing initial separation of the powder and breaking the single columnar conveying pattern, laying the foundation for subsequent dispersion. The sloping structure at the top of the multiple second diversion plates guides the powder after initial separation. Simultaneously, the smaller spacing between the tops of the second diversion plates near the center of the first diversion plate and the larger spacing between the tops of the second diversion plates further away from the center guides the powder to diffuse evenly into different areas of the hopper or carriage, making the material pile flatter and preventing it from forming a cone shape. This reduces wasted space in the hopper and lowers the risk of collapse and scattering during transportation due to excessively high material piles. Dispersed feeding reduces the height of the material pile tip, improving space utilization and reducing gaps for subsequent collapse and scattering. 2. This utility model, through the setting of a servo motor and gears, enables the servo motor to drive the support shaft to move the first diverter plate in reciprocating forward and reverse directions, further breaking the fixed accumulation trajectory of the powder, so that the columnar powder can be more fully spread on the surface of the material box or carriage after diversion, enhancing the powder dispersion effect, improving the space utilization of the material box and the stability of the material in the subsequent transportation process; the two gears mesh with each other, which can ensure that the two first diverter plates respectively sleeved on the support shaft achieve a state of opposite direction but synchronized speed, avoiding the powder from accumulating on one side due to inconsistent speed or the same direction of the diverter plates, ensuring the uniformity of the initial diversion; the reciprocating oscillation dispersion further improves the dispersion effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the first diverter plate of this utility model when it is unfolded; Figure 3 This is a schematic diagram of the structure of the first diverter plate of this utility model when it is closed; Figure 4 The explosive structure of the support of this utility model is intended to be provided; Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the image.

[0026] In the diagram: 1. Spin dryer body; 2. Feed inlet; 3. Liquid phase outlet; 4. Solid phase outlet; 5. Screw conveyor; 6. Support frame; 7. First diverter plate; 8. Second diverter plate; 9. Servo motor; 10. Support shaft; 11. Gear. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of this utility model will be described below based on its overall structure.

[0029] Example 1: A water-based spin dryer for treating drill cuttings, such as Figures 1-5 As shown, the device includes a spin dryer body 1 and an auger elevator 5. A bracket 6 is externally connected to the auger elevator 5. A servo motor 9 is mounted on one side of the back of the bracket 6. Support shafts 10 are connected to both the output end of the servo motor 9 and the back of the bracket 6. The support shafts 10 are rotatably connected to the bracket 6 via bearings. A first diverter plate 7 and a gear 11 are respectively sleeved on the outside of the support shaft 10. The two gears 11 mesh. A second diverter plate 8 is fixed below one side of the first diverter plate 7. Multiple second diverter plates 8 are provided, and the tops of the multiple second diverter plates 8 are all sloped. During the process of powder being discharged from the outlet of the auger elevator 5, the servo motor 9 starts and outputs power, driving one of the connected support shafts 10 to rotate via a coupling. Because the gears 11 sleeved on the outside of the two support shafts 10 mesh with each other, under the transmission action of the gears 11, the two support shafts 10 drive their respective connected first diverter plates 7 to rotate in opposite directions. The rotation speed is synchronized, and the servo motor 9 can drive the support shaft 10 to drive the first diverter plate 7 to perform reciprocating forward and reverse rotation. During this process, the first diverter plate 7 directly receives the columnar powder discharged by the auger elevator 5. The powder is initially separated by the synchronous reciprocating rotation in opposite directions, breaking the single columnar conveying form of the powder and avoiding the concentrated accumulation of powder. The powder after initial separation falls onto multiple second diverter plates 8 below one side of the first diverter plate 7. Since the top of the second diverter plates 8 is all sloping, and the distance between the tops of the second diverter plates 8 near the center of the first diverter plate 7 is small, while the distance between the tops of the second diverter plates 8 far from the center is large, the sloping structure guides the powder. The difference in spacing guides the powder to spread evenly to different areas of the hopper or carriage, so that the powder changes from a concentrated columnar fall to a flat spread, reducing the phenomenon of powder accumulation in a cone shape, thereby reducing the waste of hopper space and the risk of material pile collapse and scattering during transportation.

[0030] See Figure 1In the above embodiment, the top of the spin dryer body 1 is connected to the feed inlet 2, both sides of the spin dryer body 1 are connected to the liquid phase outlet 3, and the bottom of the spin dryer body 1 is connected to the solid phase outlet 4. The solid phase outlet 4 is connected to the auger elevator 5. The water-based drill cuttings to be processed enter the spin dryer body 1 through the feed inlet 2. The spin dryer body 1 performs solid-liquid separation treatment on the water-based drill cuttings by centrifugal force. The liquid phase in the drill cuttings is discharged from the liquid phase outlet 3 on both sides of the spin dryer body 1. The solid phase drill cuttings after separation form a powder with low moisture content, which is discharged from the solid phase outlet 4 at the bottom of the spin dryer body 1 and directly enters the auger elevator 5 connected to it. The auger elevator 5 conveys the powder upward to the discharge port position to prepare for subsequent diversion and loading.

[0031] Example 2: Based on the above embodiment 1, in order to reduce the wear of gear 11, the following settings are now implemented.

[0032] See Figure 1 and Figure 2 In the above embodiment, a protective shell is bolted to the outer surface of the bracket 6, and grease can be placed inside to further reduce the wear of the gear 11. An EPDM rubber sealing gasket is provided between the protective shell and the bracket 6. The protective shell is bolted to the outer surface of the bracket 6, and the EPDM rubber sealing gasket between the protective shell and the bracket 6 can form a sealing structure, which plays a role in sealing and protecting the gear 11 inside the bracket 6, reducing the contact between external dust and moisture and the gear 11, and avoiding its adverse effects on the meshing accuracy and running stability of the gear 11. The protective shell is detachable from the bracket 6, and if it is necessary to check the condition of the gear 11 later, the protective shell can be easily removed for operation.

[0033] Example 3: Based on the above embodiment two, the following settings are now made for ease of maintenance.

[0034] See Figures 2-5 In the above embodiment, the top of the bracket 6 is in the shape of a clamp. The bracket 6 is detachably connected to the top of the flange plate of the auger elevator 5 by bolts. The gear 11 is detachably connected to the support shaft 10 by a key connection. One of the support shafts 10 is detachably connected to the servo motor 9 by a coupling. The support shaft 10 has a square cross-section. The first diverter plate 7 is detachably connected to the support shaft 10. The operator first removes the protective shell on the outer surface of the bracket 6, then removes the gear 11 that is connected to the support shaft 10 by a key connection. Then the operator separates the coupling connecting the support shaft 10 and the servo motor 9, so that the support shaft 10 is disconnected from the servo motor 9. Next, the operator removes the support shaft 10 connected to the bracket 6 by a bearing from the bracket 6. Finally, the first diverter plate 7 that is connected to the square cross-section support shaft 10 is removed, completing the step-by-step disassembly of the components. The assembly is carried out in the reverse order.

[0035] The implementation principle of this utility model is as follows: First, the water-based drill cuttings to be processed enter the main body 1 of the centrifuge through the feed inlet 2. Inside the main body 1, the water-based drill cuttings are separated into solid and liquid phases by centrifugal force. The liquid phase in the drill cuttings is discharged from the liquid phase outlets 3 on both sides of the main body 1. The solid phase drill cuttings after separation form a powder with low moisture content, which is discharged from the solid phase outlet 4 at the bottom of the main body 1 and directly enters the auger elevator 5 connected to it. The auger elevator 5 conveys the powder upward to the discharge port position to prepare for subsequent diversion and loading. During the process of powder being discharged from the outlet of the auger elevator 5, the servo motor 9 starts and outputs power, driving a support shaft 10 connected to it to rotate via a coupling. Since the gears 11 sleeved on the outside of the two support shafts 10 mesh with each other, under the transmission action of the gears 11, the two support shafts 10 drive their respective connected first diverter plates 7 to achieve opposite directions but synchronized speeds. Furthermore, the servo motor 9 can drive the support shafts 10 to drive the first diverter plates 7 to perform reciprocating forward and reverse rotations. During this process, the first diverter plates 7 directly receive the columnar powder discharged from the auger elevator 5, and perform initial separation of the powder through synchronized reciprocating rotations. The separation process breaks the single columnar conveying pattern of powder, avoiding concentrated accumulation of powder. After initial separation, the powder falls onto multiple second diversion plates 8 below one side of the first diversion plate 7. Since the tops of the second diversion plates 8 are all sloping, and the distance between the tops of the second diversion plates 8 closer to the center of the first diversion plate 7 is smaller, while the distance between the tops of the second diversion plates 8 farther from the center is larger, the sloping structure guides the powder. The difference in spacing guides the powder to spread evenly to different areas of the hopper or carriage, changing the powder from concentrated columnar falling to planar spreading, reducing the phenomenon of powder accumulation in a cone shape, thereby reducing the waste of hopper space and the risk of material collapse and scattering during transportation. Meanwhile, a protective shell is bolted to the outer surface of the bracket 6. The EPDM rubber sealing gasket between the protective shell and the bracket 6 forms a sealing structure, which seals and protects the gear 11 inside the bracket 6, reducing the contact between external dust and moisture and the gear 11, and preventing it from adversely affecting the meshing accuracy and running stability of the gear 11. Furthermore, the protective shell and the bracket 6 are detachable, so if it is necessary to check the condition of the gear 11 later, the protective shell can be easily removed for operation. When the equipment requires maintenance of its internal components after a period of use, it can be disassembled according to a specific procedure. First, the operator removes the protective shell from the outer surface of the bracket 6. Then, the gear 11, which is connected to the support shaft 10 via a key, is removed. Next, the operator separates the coupling connecting the support shaft 10 and the servo motor 9, disengaging the support shaft 10 from the servo motor 9. Then, the operator removes the support shaft 10, which is connected to the bracket 6 via a bearing, from the bracket 6. Finally, the first diverter plate 7, which mates with the square-section support shaft 10, is removed, completing the step-by-step disassembly of the components. During assembly, the operation proceeds in reverse order. The gear 11, support shaft 10, and first diverter plate 7 are assembled using limiting and clamping methods to ensure the stability of each component's position while maintaining its detachability. This ensures both the normal operation of the equipment and facilitates subsequent maintenance.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A water-based drill cuttings drying machine, comprising a drying machine body (1) and an auger elevator (5), characterized in that: The auger lifter (5) is externally connected to a bracket (6), and a servo motor (9) is installed on one side of the back of the bracket (6). The output end of the servo motor (9) and the back of the bracket (6) are both connected to a support shaft (10), and a first diverter plate (7) and a gear (11) are respectively sleeved on the outside of the support shaft (10). A second diverter plate (8) is also fixed below one side of the first diverter plate (7).

2. The water-based drill cuttings drying machine according to claim 1, characterized in that: The support shaft (10) is rotatably connected to the bracket (6) via a bearing.

3. The water-based drill cuttings drying machine according to claim 1, characterized in that: Multiple second diverter plates (8) are provided, and the tops of multiple second diverter plates (8) are all sloping.

4. The water-based drill cuttings drying machine according to claim 1, characterized in that: The two gears (11) mesh with each other.

5. The spin dryer for water-based drill cuttings treatment according to claim 1, characterized in that: The top of the spin dryer body (1) is connected to a feed inlet (2), both sides of the spin dryer body (1) are connected to liquid phase outlets (3), the bottom of the spin dryer body (1) is connected to a solid phase outlet (4), and the solid phase outlet (4) is connected to the auger elevator (5).

6. The water-based drill cuttings drying machine according to claim 1, characterized in that: The outer surface of the bracket (6) is connected to a protective shell by bolts, and a EPDM rubber sealing gasket is provided between the protective shell and the bracket (6). The protective shell is detachably connected to the bracket (6).

7. The water-based drill cuttings drying machine according to claim 1, characterized in that: The top of the bracket (6) is in the shape of a clamp, and the bracket (6) is detachably connected to the top of the discharge port flange of the auger elevator (5) by bolts.

8. The water-based drill cuttings drying machine according to claim 1, characterized in that: The gear (11) is detachably connected to the support shaft (10) by a key connection, and one of the support shafts (10) is detachably connected to the servo motor (9) by a coupling.

9. The centrifugal dryer for water-based drill cuttings treatment according to claim 8, characterized in that: The support shaft (10) has a square cross-section, and the first diverter plate (7) is detachably connected to the support shaft (10).

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