Screw conveyer for discharging solid-phase waste of drilling fluid

Abstract

The utility model discloses a spiral conveyer for discharging solid-phase waste of drilling fluid, which comprises a spiral blade, a mandrel, a casing, an upper cover plate, a motor, a gear reducer, a feed port and a discharge port, a flushing jet pipeline is arranged on the outer side of the casing, a plurality of nozzles are connected onto the flushing jet pipeline and positioned in the casing, and the spraying direction of the nozzles faces the spiral blade. The shell is further provided with a protection device. According to the utility model, the labor intensity of operators is reduced, the working efficiency is improved, and the intrinsic safety of the spiral conveyer is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum drilling equipment and relates to a screw conveyor for discharging drilling fluid solid phase waste. Background Art

[0002] Conventional drilling fluid solids control systems are equipped with screw conveyors consisting of spiral blades, a core shaft, a housing, a top cover, a motor, a gear reducer, and inlet and outlet ports. During operation, the motor drives the gear reducer, which in turn rotates the screw, transporting the solid waste separated by the vibrating screen and centrifuge to the drilling fluid pool. The solid waste contains a small amount of drilling fluid, which deposits and adheres to the spiral blades, core shaft, and housing. As the deposits increase, conveying efficiency decreases, and even normal conveying becomes impossible, requiring the system to be shut down and the top cover opened for cleaning, which is time-consuming, labor-intensive, and arduous. The spiral blades, as rotating bodies, pose a safety hazard that could cause harm to the human body. Utility Model Content

[0003] The purpose of the utility model is to provide a screw conveyor for discharging drilling fluid solid waste, which solves the problems of low working efficiency and poor safety of the screw conveyor in the prior art.

[0004] The technical solution adopted by the utility model is a screw conveyor for discharging solid-phase waste of drilling fluid, which includes spiral blades, a core shaft, a shell, an upper cover plate, a motor, a gear reducer, a feed port, and a discharge port. A flushing jet pipeline is provided on the outside of the shell, and a plurality of nozzles are connected to the flushing jet pipeline. The nozzles are located in the shell, and the spray direction of the nozzles is toward the spiral blades. A protective device is also provided on the shell.

[0005] The utility model is also characterized in that:

[0006] There are two flushing jet pipelines, both of which are located outside the shell, and the two flushing jet pipelines are located on both sides of the shell respectively, and the length direction of the flushing jet pipeline is parallel to the length direction of the core shaft.

[0007] The plurality of nozzles are evenly and equidistantly arranged, and the spray ranges of all the nozzles cover the entire length of the spiral blades on the core shaft.

[0008] The distance between two adjacent nozzles is 1m-2m.

[0009] A ball valve is provided in the middle position of the flushing jet pipeline.

[0010] One end of the flushing jet pipeline is provided with a blind union joint, and the other end is connected to an external hose and a clean water pipeline in sequence through the union joint.

[0011] The protective device includes a handle fixed on the upper cover, and also includes a tension rope arranged on one side of the shell. The handle is connected to the tension rope through a pull wire. The tension rope is arranged parallel to the core axis, and one end of the tension rope is fixed at the end of the shell, and the other end is connected to a pull wire switch. The pull wire switch is fixed at the front end of the shell. The pull wire switch is connected to a power supply, and the power supply is respectively connected to the motor and the sound and light alarm. When the upper cover is opened, the handle pulls the tension rope to cut off the power to the pull wire switch, the motor stops working, and the sound and light alarm sounds.

[0012] The guy rope is a steel wire guy rope, and the pull wire is a steel wire pull wire.

[0013] The upper cover plate is composed of a plurality of molded grilles. One side of each molded grille is connected to the shell through a hinge, and each molded grille is provided with two handles.

[0014] The beneficial effects of the utility model are:

[0015] This new screw conveyor for discharging drilling fluid solid waste is designed to reduce the viscosity of the liquid-containing drilling fluid solid waste separated by the vibrating screen and centrifuge during drilling and solids control system operations. A spray flushing mechanism reduces the viscosity of the liquid-containing drilling fluid solid waste, allowing the screw conveyor to smoothly transport the liquid-containing drilling fluid solid waste to the drilling fluid pool. When the upper cover is opened, a pull-wire switch automatically shuts off, and the screw conveyor automatically alarms and stops. Compared to screw conveyors used in conventional solids control systems, this new screw conveyor reduces operator labor intensity, improves work efficiency, and ensures the inherent safety of the screw conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a screw conveyor for discharging solid waste from drilling fluid according to the present invention;

[0017] Figure 2 This is a cross-sectional view of a screw conveyor for discharging solid waste from drilling fluid according to the present invention;

[0018] Figure 3 It is a top view of the screw conveyor for discharging solid phase waste of drilling fluid according to the utility model.

[0019] In the figure, 1. Pull-wire switch, 2. Handle, 3. Guy rope, 4. Flushing jet pipeline, 5. Ball valve, 6. Housing, 7. Union joint, 8. Motor, 9. Gear reducer, 10. Upper cover, 11. Mandrel, 12. Spiral blade, 13. Feed port, 14. Discharge port, 15. Nozzle, 16. Pull-wire, 17. Sound and light alarm. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments described are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1

[0022] This embodiment provides a screw conveyor for discharging drilling fluid solid waste, including a spiral blade 12, a core shaft 11, a shell 6, an upper cover plate 10, a motor 8, a gear reducer 9, a feed port 13, and a discharge port 14. A flushing jet pipeline 4 is provided on the outside of the shell 6, and a plurality of nozzles 15 are connected to the flushing jet pipeline 4. The nozzles 15 are located in the shell 6, and the spraying direction of the nozzles 15 is toward the spiral blade 12. A protective device is also provided on the shell 6.

[0023] When the screw conveyor is working, if the viscosity of the liquid-containing solid phase waste separated from the water-based drilling fluid or oil-based drilling fluid by the vibrating screen or centrifuge is relatively high, the cuttings and drilling fluid will be deposited on the screw conveyor core shaft and spiral blades. Clean water is evenly sprayed on the spiral blades 12 and core shaft 11 through the nozzle 15 on the flushing jet pipeline 4, thereby reducing the viscosity of the drilling fluid cuttings and preventing the drilling fluid from depositing and sticking. The screw conveyor smoothly transports the drilling fluid solid phase waste to the drilling fluid pool, ensuring the normal operation of the solid control system and drilling operations.

[0024] This embodiment only represents the preferred implementation of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention. Any screw conveyor for discharging solid-phase waste from drilling fluid designed with similar technical features to the present invention will fall within the protection scope of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention.

[0025] Example 2

[0026] The present embodiment provides a screw conveyor for discharging drilling fluid solid waste, including a spiral blade 12, a core shaft 11, a shell 6, an upper cover plate 10, a motor 8, a gear reducer 9, a feed port 13, and a discharge port 14. Two flushing jet pipelines 4 are arranged on the outside of the shell 6, and the two flushing jet pipelines 4 are respectively located on both sides of the shell 6. The length direction of the flushing jet pipeline 4 is parallel to the length direction of the core shaft 11. The flushing jet pipeline 4 is connected to a plurality of equidistant and uniformly arranged nozzles 15. The nozzles 15 are located in the shell 6, and the distance between two adjacent nozzles 15 is 1m. The spray range of all nozzles 15 covers the entire length of the spiral blade 12 on the core shaft 11, and the spray direction of the nozzle 15 is toward the spiral blade 12. A protective device is also provided on the shell 6.

[0027] When the screw conveyor is working, if the viscosity of the liquid-containing solid phase waste separated from the water-based drilling fluid or oil-based drilling fluid by the vibrating screen or centrifuge is relatively high, the cuttings and drilling fluid will be deposited on the screw conveyor core shaft and spiral blades. Clean water is evenly sprayed on the spiral blades 12 and core shaft 11 through the nozzle 15 on the flushing jet pipeline 4, thereby reducing the viscosity of the drilling fluid cuttings and preventing the drilling fluid from depositing and sticking. The screw conveyor smoothly transports the drilling fluid solid phase waste to the drilling fluid pool, ensuring the normal operation of the solid control system and drilling operations.

[0028] This embodiment only represents the preferred implementation of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention. Any screw conveyor for discharging solid-phase waste from drilling fluid designed with similar technical features to the present invention will fall within the protection scope of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention.

[0029] Example 3

[0030] The present embodiment provides a screw conveyor for discharging drilling fluid solid waste, comprising a spiral blade 12, a core shaft 11, a shell 6, an upper cover plate 10, a motor 8, a gear reducer 9, a feed port 13, and a discharge port 14. Two flushing jet pipelines 4 are provided on the outside of the shell 6, and the two flushing jet pipelines 4 are respectively located on both sides of the shell 6. The length direction of the flushing jet pipeline 4 is parallel to the length direction of the core shaft 11. A ball valve 5 is provided at the middle position of the flushing jet pipeline 4. A blind union is provided at one end of the flushing jet pipeline 4, and a hose and a clean water pipeline are connected to the other end in sequence through a union joint 7. A plurality of equidistantly and evenly arranged nozzles 15 are connected to the flushing jet pipeline 4. The nozzles 15 are located in the shell 6, and the distance between two adjacent nozzles 15 is 2m. The spray range of all nozzles 15 covers the entire length of the spiral blade 12 on the core shaft 11, and the spray direction of the nozzle 15 is toward the spiral blade 12. A protective device is also provided on the shell 6.

[0031] When the screw conveyor is operating, if the viscosity of the liquid-containing solid waste separated from the water-based or oil-based drilling fluid by a vibrating screen or centrifuge is high, the cuttings and drilling fluid will deposit on the screw conveyor's core shaft and spiral blades. The clean water line is opened to supply clean water to the flushing jet line 4. The ball valve 5 is opened, and the clean water is evenly sprayed onto the spiral blades 12 and core shaft 11 through the nozzles 15 on the flushing jet line 4, reducing the viscosity of the drilling fluid and cuttings and preventing sedimentation and adhesion. The ball valve 5 on the flushing jet line 4 is adjusted to control the water flow into the nozzles 15. The screw conveyor smoothly transports the drilling fluid solid waste to the drilling fluid pool, ensuring the normal operation of the solids control system and drilling operations.

[0032] This embodiment only represents the preferred implementation of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention. Any screw conveyor for discharging solid-phase waste from drilling fluid designed with similar technical features to the present invention will fall within the protection scope of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention.

[0033] Example 4

[0034] This embodiment provides a screw conveyor for discharging drilling fluid solid waste, including a spiral blade 12, a core shaft 11, a shell 6, an upper cover plate 10, a motor 8, a gear reducer 9, a feed port 13, and a discharge port 14. A flushing jet pipeline 4 is provided on the outside of the shell 6, and a plurality of nozzles 15 are connected to the flushing jet pipeline 4. The nozzles 15 are located in the shell 6, and the spraying direction of the nozzles 15 is toward the spiral blade 12. A protective device is also provided on the shell 6.

[0035] The protective device includes a handle 2 fixed on the upper cover 10, and also includes a tension rope 3 arranged on one side of the shell 6. The handle 2 is connected to the tension rope 3 through a pull wire 16. The tension rope 3 is arranged parallel to the core shaft 11, and one end of the tension rope 3 is fixed at the end of the shell 6, and the other end is connected to the pull wire switch 1. The pull wire switch 1 is fixed at the front end of the shell 6. The pull wire switch 1 is connected to a power supply, and the power supply is respectively connected to the motor 8 and the sound and light alarm 17. When the upper cover 10 is opened, the handle 2 pulls the tension rope 3 to cut off the power to the pull wire switch 1, the motor 8 stops working, and the sound and light alarm 17 alarms.

[0036] When the screw conveyor is operating, if the viscosity of the liquid-containing solid waste separated from the water-based or oil-based drilling fluid by a vibrating screen or centrifuge is high, the cuttings and drilling fluid will deposit on the screw conveyor's core shaft and spiral blades. The clean water line is opened to supply clean water to the flushing jet line 4. The ball valve 5 is opened, and the clean water is evenly sprayed onto the spiral blades 12 and core shaft 11 through the nozzles 15 on the flushing jet line 4, reducing the viscosity of the drilling fluid and cuttings and preventing sedimentation and adhesion. The ball valve 5 on the flushing jet line 4 is adjusted to control the water flow into the nozzles 15. The screw conveyor smoothly transports the drilling fluid solid waste to the drilling fluid pool, ensuring the normal operation of the solids control system and drilling operations.

[0037] When the operator accidentally opens the upper cover 10, the handle 2 pulls the guy wire 3 through the pull wire 16, the pull wire switch 1 is actuated, the motor 8 stops working, and the sound and light alarm sends out an alarm message.

[0038] This embodiment only represents the preferred implementation of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention. Any screw conveyor for discharging solid-phase waste from drilling fluid designed with similar technical features to the present invention will fall within the protection scope of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention.

[0039] Example 5

[0040] This embodiment provides a screw conveyor for discharging drilling fluid solid waste, including a spiral blade 12, a core shaft 11, a shell 6, an upper cover plate 10, a motor 8, a gear reducer 9, a feed port 13, and a discharge port 14. A flushing jet pipeline 4 is provided on the outside of the shell 6, and a plurality of nozzles 15 are connected to the flushing jet pipeline 4. The nozzles 15 are located in the shell 6, and the spraying direction of the nozzles 15 is toward the spiral blade 12. A protective device is also provided on the shell 6.

[0041] The protective device includes a handle 2 fixed on the upper cover 10, and also includes a tension rope 3 arranged on one side of the shell 6. The tension rope 3 is a steel wire tension rope. The handle 2 is connected to the tension rope 3 through a pull wire 16. The pull wire 16 is a steel wire pull wire. The tension rope 3 is arranged parallel to the core shaft 11, and one end of the tension rope 3 is fixed at the end of the shell 6, and the other end is connected to the pull wire switch 1. The pull wire switch 1 is fixed at the front end of the shell 6. The pull wire switch 1 is connected to a power supply, and the power supply is respectively connected to the motor 8 and the sound and light alarm 17. When the upper cover 10 is opened, the handle 2 pulls the tension rope 3 to cut off the power to the pull wire switch 1, the motor 8 stops working, and the sound and light alarm 17 alarms.

[0042] When the screw conveyor is operating, if the viscosity of the liquid-containing solid waste separated from the water-based or oil-based drilling fluid by a vibrating screen or centrifuge is high, the cuttings and drilling fluid will deposit on the screw conveyor's core shaft and spiral blades. The clean water line is opened to supply clean water to the flushing jet line 4. The ball valve 5 is opened, and the clean water is evenly sprayed onto the spiral blades 12 and core shaft 11 through the nozzles 15 on the flushing jet line 4, reducing the viscosity of the drilling fluid and cuttings and preventing sedimentation and adhesion. The ball valve 5 on the flushing jet line 4 is adjusted to control the water flow into the nozzles 15. The screw conveyor smoothly transports the drilling fluid solid waste to the drilling fluid pool, ensuring the normal operation of the solids control system and drilling operations.

[0043] When the operator accidentally opens the upper cover 10, the handle 2 pulls the guy wire 3 through the pull wire 16, the pull wire switch 1 is actuated, the motor 8 stops working, and the sound and light alarm sends out an alarm message.

[0044] This embodiment only represents the preferred implementation of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention. Any screw conveyor for discharging solid-phase waste from drilling fluid designed with similar technical features to the present invention will fall within the protection scope of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention.

[0045] Example 6

[0046] This embodiment provides a screw conveyor for discharging drilling fluid solid waste, such as Figure 1As shown, it includes a spiral blade 12, a core shaft 11, a shell 6, an upper cover plate 10, a motor 8, a gear reducer 9, a feed port 13, and a discharge port 14. Two flushing jet pipelines 4 are provided on the outside of the shell 6, and the two flushing jet pipelines 4 are respectively located on both sides of the shell 6. The length direction of the flushing jet pipeline 4 is parallel to the length direction of the core shaft 11. A ball valve 5 is provided in the middle position of the flushing jet pipeline 4. A blind union is provided at one end of the flushing jet pipeline 4, and a hose and a clean water pipeline are connected to the other end in sequence through a union 7. A plurality of nozzles 15 evenly spaced are connected to the flushing jet pipeline 4, as shown in FIG. Figure 2 As shown, the nozzles 15 are located in the shell 6 , and the distance between two adjacent nozzles 15 is 1.5 m. The spraying range of all nozzles 15 covers the entire length of the spiral blade 12 on the core shaft 11 , and the spraying direction of the nozzles 15 is toward the spiral blade 12 . A protective device is also provided on the shell 6 .

[0047] like Figure 3 As shown, the protective device includes a handle 2 fixed on the upper cover 10, the upper cover 10 is a plurality of molded grilles, each molded grille is connected to the shell 6 on one side by a hinge, and each molded grille is provided with two handles 2, and also includes a tension rope 3 arranged on one side of the shell 6, the tension rope 3 is a steel wire tension rope, the handle 2 is connected to the tension rope 3 through a pull wire 16, the pull wire 16 is a steel wire tension rope, the tension rope 3 is arranged parallel to the core shaft 11, and one end of the tension rope 3 is fixed to the end of the shell 6, and the other end is connected to the pull wire switch 1, the pull wire switch 1 is fixed to the front end of the shell 6, the pull wire switch 1 is connected to a power supply, and the power supply is respectively connected to the motor 8 and the sound and light alarm 17. When the upper cover 10 is opened, the handle 2 pulls the tension rope 3 to cut off the power to the pull wire switch 1, the motor 8 stops working, and the sound and light alarm 17 alarms.

[0048] When the screw conveyor is operating, if the viscosity of the liquid-containing solid waste separated from the water-based or oil-based drilling fluid by a vibrating screen or centrifuge is high, the cuttings and drilling fluid will deposit on the screw conveyor's core shaft and spiral blades. The clean water line is opened to supply clean water to the flushing jet line 4. The ball valve 5 is opened, and the clean water is evenly sprayed onto the spiral blades 12 and core shaft 11 through the nozzles 15 on the flushing jet line 4, reducing the viscosity of the drilling fluid and cuttings and preventing sedimentation and adhesion. The ball valve 5 on the flushing jet line 4 is adjusted to control the water flow into the nozzles 15. The screw conveyor smoothly transports the drilling fluid solid waste to the drilling fluid pool, ensuring the normal operation of the solids control system and drilling operations.

[0049] On-site personnel can monitor the operating status of the spiral at any time through the grille cover. Based on the viscosity of the liquid-solid waste, they can adjust the water inlet ball valve installed on the jet line to control the water flow into the nozzle. If the operator accidentally opens the upper cover 10, the handle 2 pulls the guy wire 3 via the pull wire 16, actuating the pull wire switch 1, stopping the motor 8, and emitting an alarm signal from the sound and light alarm.

[0050] This embodiment only represents the preferred implementation of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention. Any screw conveyor for discharging solid-phase waste from drilling fluid designed with similar technical features to the present invention will fall within the protection scope of the screw conveyor for discharging solid-phase waste from drilling fluid of the present invention.

[0051] From the above content, it can be seen that in the screw conveyor for discharging solid-phase waste of drilling fluid of the utility model, the operator can control and adjust the spraying through the ball valve 5 on the flushing jet pipeline 4. When the mud and rock cuttings are viscous and water needs to be added, it is only necessary to adjust the ball valve 5 to control the water intake to achieve smooth discharge of waste by the screw conveyor; when it is necessary to open the upper cover plate 10, the screw conveyor automatically cuts off the power and stops to avoid causing personal injury; the work efficiency of the operators is improved, the labor intensity of the operators is reduced, and the inherent safety of the equipment is ensured.

Claims

1. A screw conveyor for discharging solid waste of drilling fluid, comprising a spiral blade (12), a core shaft (11), a housing (6), an upper cover plate (10), a motor (8), a gear reduction box (9), a feed port (13), and a discharge port (14), characterized in that: A flushing jet pipeline (4) is provided outside the housing (6), and a plurality of nozzles (15) are connected to the flushing jet pipeline (4). The nozzles (15) are located in the housing (6), and the spraying direction of the nozzles (15) is toward the spiral blade (12). A protective device is also provided on the housing (6).

2. The screw conveyor for discharging drilling fluid solid waste according to claim 1, characterized in that: Two flushing jet pipelines (4) are provided, both of which are located outside the shell (6), and the two flushing jet pipelines (4) are located on both sides of the shell (6), respectively, and the length direction of the flushing jet pipeline (4) is parallel to the length direction of the core shaft (11).

3. The screw conveyor for discharging drilling fluid solid waste according to claim 1, characterized in that: The plurality of nozzles (15) are evenly and equidistantly arranged, and the spraying ranges of all the nozzles (15) cover the entire length of the spiral blade (12) on the core shaft (11).

4. The screw conveyor for discharging drilling fluid solid waste according to claim 3, characterized in that: The distance between two adjacent nozzles (15) is 1m-2m.

5. The screw conveyor for discharging drilling fluid solid waste according to claim 1, characterized in that: A ball valve (5) is provided at a middle position on the flushing jet pipeline (4).

6. The screw conveyor for discharging drilling fluid solid waste according to claim 1, characterized in that: One end of the flushing jet pipeline (4) is provided with a blind union joint, and the other end is connected to a hose and a clean water pipeline in sequence through a union joint (7).

7. The screw conveyor for discharging drilling fluid solid waste according to claim 1, characterized in that: The protective device includes a handle (2) fixed on the upper cover (10), and also includes a tension rope (3) arranged on one side of the shell (6), the handle (2) is connected to the tension rope (3) through a pull wire (16), the tension rope (3) is arranged parallel to the core shaft (11), and one end of the tension rope (3) is fixed to the end of the shell (6), and the other end is connected to a tension rope switch (1), the tension rope switch (1) is fixed to the front end of the shell (6), the tension rope switch (1) is connected to a power supply, and the power supply is respectively connected to the motor (8) and the sound and light alarm (17). When the upper cover (10) is opened, the handle (2) pulls the tension rope (3) to cut off the power to the tension rope switch (1), the motor (8) stops working, and the sound and light alarm (17) sounds an alarm.

8. The screw conveyor for discharging drilling fluid solid waste according to claim 7, characterized in that: The guy rope (3) is a steel guy rope, and the pull wire (16) is a steel pull wire.

9. The screw conveyor for discharging drilling fluid solid waste according to claim 7, characterized in that: The upper cover plate (10) is a plurality of molded grilles, one side of each molded grille is connected to the housing (6) via a hinge, and each molded grille is provided with two handles (2).

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