Device for automatically stirring slurry
The modularly designed automatic mud mixing device, which combines mixing and storage functions, solves the problems of large space occupation, high cost and complex process in traditional mud preparation, and achieves space saving, cost reduction and management efficiency improvement.
Patent Information
- Application Number
- CN202422936771.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In traditional mud preparation processes, mixing and storage equipment are separate, occupying a large space, with high equipment investment costs, and the process is complex. Furthermore, mud transfer relies on additional equipment, making it difficult to manage.
Design a modular automatic mud mixing device that combines mixing and storage functions. Multiple mud mixing units are arranged in parallel, and mud circulation and transfer are achieved through an internal piping system, reducing the need for additional conveying equipment.
It saves space resources, simplifies processes, reduces costs, improves management convenience and efficiency, provides excellent mixing effect, and is easy to maintain.
Smart Images
Figure CN223490832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing technology, and more specifically, to a device for automatic mixing of mud. Background Technology
[0002] In the oil extraction industry, drilling mud, as a critical drilling fluid, plays a vital role in maintaining wellbore stability, cooling the drill bit, carrying drill cuttings, and controlling formation pressure. In traditional mud preparation processes, mud mixing and storage are typically two separate processes, performed by dedicated mixing equipment and storage tanks respectively. These separate mixing equipment and storage tanks require significant space, posing a considerable challenge in space-constrained oil extraction sites. Furthermore, mud transfer between the two typically relies on additional transport equipment such as pumps and pipelines, which not only increases equipment investment costs but also complicates and makes the entire mud preparation process difficult to manage. Utility Model Content
[0003] To address the problems mentioned in the background art, this application provides an automatic mud mixing device that combines mixing and storage functions, and adopts a modular design for easy and flexible capacity adjustment.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a device for automatic mud mixing, comprising multiple mud mixing units; each mud mixing unit includes a box-type storage tank, a feeding pipe, a conveying pump, a transmission pipe, an inlet pipe, a loading pipe, a discharge pipe, and a mixing device; the mixing device includes a mixing mechanism and a driving mechanism; the driving mechanism is located at the top of the box-type storage tank; the driving mechanism is used to drive the mixing mechanism to rotate; the mixing mechanism is located inside the box-type storage tank; one end of the discharge pipe is connected to the box-type storage tank, and the other end is connected to the feeding pipe; one end of the conveying pump is connected to the feeding pipe, and the other end is connected to the inlet pipe through the transmission pipe; one end of the loading pipe is connected to the inlet pipe, and the other end is connected to the box-type storage tank; the discharge pipe is located below the box-type inlet pipe; the loading pipe is located at the top of the box-type storage tank; the feeding pipes of the multiple mud mixing units are interconnected; the inlet pipes of the multiple mud mixing units are interconnected.
[0005] Furthermore, a first valve is provided on the discharge pipe, a second valve is provided between the conveying pump and the feeding pipe, and a third valve is provided on the discharge pipe.
[0006] Furthermore, the multiple mud mixing units are arranged in parallel; a protective railing is provided on the top of the box-type storage tank; and ladders are also provided on both sides of the mud mixing units.
[0007] Furthermore, the mud mixing unit includes three mixing devices; the three mixing devices are arranged side by side on the box-type storage tank.
[0008] Furthermore, the drive mechanism includes an output shaft; a sealing assembly is provided on the output shaft; the sealing assembly includes a bearing and a sealing cover; the bearing is sleeved on the output shaft; the sealing cover is located inside the tank of the box-type storage tank; the sealing cover is provided with a sealing groove and a bearing groove; the sealing groove is located below the bearing groove; the bearing groove is used to accommodate the bearing; a sealing ring is provided in the sealing groove.
[0009] Furthermore, the sealing ring includes a bottom ring, an outer wall, and an inner wall; the outer wall is disposed on the outside of the bottom ring, and the inner wall is disposed on the inside of the bottom ring; the height of the inner wall is lower than that of the outer wall; a first sealing cavity is formed between the outer wall and the inner wall; a second sealing cavity is disposed between the inner wall and the output shaft.
[0010] Furthermore, a clamping ring is provided inside the first sealing cavity to ensure that the outer wall is tightly attached to the output shaft.
[0011] Furthermore, two sealing rings are provided in the sealing groove; the two sealing rings are arranged in a mirror image; sealing oil is provided in the first sealing cavity and the second sealing cavity.
[0012] In summary, this utility model has the following beneficial effects: By integrating the mixing mechanism and storage tank into a single mud mixing unit, space resources are greatly saved. Multiple mixing units can be flexibly combined, and the overall capacity can be adjusted according to actual site needs, making the mud preparation system more compact and efficient. In traditional mud preparation processes, the transfer of mud between mixing and storage equipment requires additional conveying equipment, such as pumps and pipelines, which not only increases equipment investment costs but also complicates the entire process. This utility model, through an internally interconnected pipeline system (feeding pipe, transmission pipe, inlet pipe, loading pipe, unloading pipe), realizes the circulation and transfer of mud within the mixing unit, eliminating the need for additional conveying equipment, thereby simplifying the process and reducing costs. The interconnected design of multiple mud mixing units allows the entire system to quickly adjust the mud preparation and storage volume according to actual needs. It facilitates maintenance and management: the integrated design makes the maintenance and management of the mud mixing device simpler. Each mixing unit is relatively independent, facilitating inspection and maintenance; simultaneously, the operating status of the entire system can be centrally controlled, improving the convenience and efficiency of management. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of a mud mixing device.
[0014] Figure 2 This is a schematic diagram of a mud mixing unit.
[0015] Figure 3 This is a cross-sectional view of the mud mixing unit.
[0016] Figure 4 yes Figure 3 Enlarged view of the part
[0017] Figure 5 yes Figure 4 Enlarged view of the part
[0018] Figure 6 This is a schematic diagram of the stirring assembly.
[0019] In the diagram: 1. Slurry mixing unit; 2. Guardrail; 3. Ladder; 4. Lifting lug; 5. Discharge pipe; 6. Feeding pipe; 7. Transmission pipe; 8. Feeding pipe; 9. Discharge pipe; 10. Drive mechanism; 11. First valve; 12. Second valve; 13. Third valve; 14. Box-type storage tank; 15. Mixing mechanism; 16. Mounting platform; 17. Output shaft; 18. Bearing; 19. Sealing ring; 20. Sealing cover; 21. Outer wall; 22. Bottom ring; 23. Inner wall; 24. Second sealing cavity; 25. First sealing cavity; 26. Hoop ring; 27. Mounting frame; 28. Connecting rod; 29. Mixing blade; 30. Support rod; 31. Vertical rod; 32. Guide plate. Detailed Implementation
[0020] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component. This "connection" is not limited to a fixed connection or a movable connection; the specific connection method should be determined based on the specific technical problem to be solved.
[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] Example 1:
[0025] An automatic mud mixing device includes multiple mud mixing units 1; each mud mixing unit 1 includes a box-type storage tank 14, a feeding pipe 6, a conveying pump, a transmission pipe 7, a feed pipe 8, a loading pipe, a discharge pipe 95, and a mixing device. The mud mixing unit 1 also includes an installation platform 16, on which the box-type storage tank 14 and the feeding pump are mounted. Lifting lugs 4 are provided on both sides of the installation platform 16 to facilitate lifting and transporting the platform 16 using lifting equipment.
[0026] The mixing device includes a mixing mechanism 15 and a driving mechanism 10; the driving mechanism 10 is located on top of the box-type storage tank 14; the driving mechanism 10 drives the mixing mechanism 15 to rotate; the mixing mechanism 15 is located inside the box-type storage tank 14. The mixing device is used to thoroughly mix the slurry in the box-type storage tank 14. One end of the discharge pipe 95 is connected to the box-type storage tank, and the other end is connected to the feeding pipe 6; one end of the conveying pump is connected to the feeding pipe 6, and the other end is connected to the inlet pipe 8 through the transmission pipe 7; one end of the loading pipe is connected to the inlet pipe 8, and the other end is connected to the box-type storage tank 14; the discharge pipe 95 is located below the box-type inlet pipe 8; the loading pipe is located on top of the box-type storage tank 14. The conveying pump can transfer the slurry in the feeding pipe 6 to the inlet pipe 8. The loading pipe is used to transport the slurry in the inlet pipe 8 to the box-type storage tank 14; the discharge pipe 95 is used to transport the slurry in the box-type storage tank 14 to the feeding pipe 6. This device is installed at a high position. When in use, the mud in the feeding pipe 6 is transported to the site through the pipeline.
[0027] The feeding pipes 6 of multiple mud mixing units 1 are interconnected; the feed pipes 8 of multiple mud mixing units 1 are interconnected. This scheme allows mud to be transferred between different box-type storage tanks 14, which facilitates the transfer of residual mud to the same box-type storage tank 14 for mixing and storage, and also facilitates the pouring operation.
[0028] In one possible embodiment, a first valve 11 is provided on the discharge pipe 95, a second valve 12 is provided between the conveying pump and the feeding pipe 6, and a third valve 13 is provided on the discharge pipe 95. The first valve 11, the second valve 12, and the third valve 13 are electrically controlled valves, which can realize the transfer of mud in different box-type storage tanks 14. Specifically, by opening the first valve 11 of the starting box-type storage tank 14, starting the conveying pump of the target box-type storage tank 14, opening the third valve 13 of the target tank, and closing the valves on other unrelated box-type storage tanks 14, the mud can enter the target tank through the feeding pipe 6, the transfer pipe 7, the feed pipe 8, and the loading pipe. Similarly, the mud can also be transported to the target box-type storage tank 14 by starting the conveying pump on the starting box-type storage tank 14.
[0029] In one possible embodiment, the plurality of mud mixing units 1 are arranged side by side; this side-by-side arrangement results in a compact structure and facilitates installation. A protective railing 2 is provided on the top of the box-type storage tank; ladders 3 are also provided on both sides of the mud mixing units 1. Each mud mixing unit 1 includes three mixing devices; the three mixing devices are arranged side by side on the box-type storage tank 14.
[0030] In one possible embodiment, the drive mechanism 10 includes an output shaft 17; a sealing assembly is provided on the output shaft 17; the sealing assembly includes a bearing 18 and a sealing cover 20; the bearing 18 is sleeved on the output shaft 17; the sealing cover 20 is disposed inside the tank of the box-type storage tank; the sealing cover 20 is provided with a sealing groove and a bearing 18 groove; the sealing groove is located below the bearing 18 groove; the bearing 18 groove is used to accommodate the bearing 18; a sealing ring 19 is provided in the sealing groove. The bearing 18 groove provides a precise positioning and fixing space for the bearing 18, ensuring that the bearing 18 can be stably installed on the output shaft 17 without loosening or shifting due to vibration or impact. The main function of the bearing 18 is to support the rotation of the output shaft 17 and reduce frictional resistance during rotation. It allows the output shaft 17 to rotate smoothly and steadily while bearing a load. The sealing ring 19 is installed in the sealing groove and fits tightly with the output shaft 17 to form an effective sealing barrier. It can prevent slurry from leaking from the inside of the box-type storage tank into the external environment, keeping the equipment clean and operating efficiently. The mud contains a large number of solid particles and corrosive substances. If it leaks into the bearing 18 or the drive mechanism 10, it will cause serious wear and corrosion. The sealing ring 19 can effectively prevent this from happening and protect the bearing 18 and the drive mechanism 10 from the mud.
[0031] In one possible embodiment, the sealing ring 19 includes a bottom ring 22, an outer wall 21, and an inner wall 23; the outer wall 21 is disposed outside the bottom ring 22, and the inner wall 23 is disposed inside the bottom ring 22; the height of the inner wall 23 is lower than that of the outer wall 21; a first sealing cavity 25 is formed between the outer wall 21 and the inner wall 23; a second sealing cavity 24 is disposed between the inner wall 23 and the output shaft 17. The first sealing cavity 25 formed between the outer wall 21 and the inner wall 23, and the second sealing cavity 24 disposed between the inner wall 23 and the output shaft 17, constitute a double sealing structure. This design can more effectively prevent media such as mud from leaking from the seal, ensuring the sealing performance of the equipment.
[0032] In one possible embodiment, a clamping ring 26 is provided within the first sealing cavity 25 to clamp the outer wall 21 so that the outer wall 21 is tightly fitted against the output shaft 17. The presence of the clamping ring 26 further ensures a tight fit between the outer wall 21 and the output shaft 17, thereby enhancing the sealing effect. This design effectively prevents media such as mud from leaking from the seal, ensuring the sealing performance of the equipment.
[0033] In one possible embodiment, two sealing rings 19 are provided within the sealing groove; the two sealing rings 19 are arranged in a mirror image; sealing oil is provided in the first sealing cavity 25 and the second sealing cavity 24. The sealing oil can be grease. Sealing oil can improve the sealing effect.
[0034] In one possible embodiment, the stirring mechanism 15 includes a stirring shaft and a stirring assembly. The stirring assembly includes a mounting frame 27; the mounting frame 27 is connected to the stirring shaft; the stirring shaft is connected to the output shaft 17; stirring components are provided at both ends of the mounting frame 27; the stirring component includes a connecting rod 28 and stirring blades 29; the connecting rod 28 is connected to the mounting frame 27; the stirring blades 29 include a first stirring blade and a second stirring blade, the tops of the first and second stirring blades are connected in a V-shape, a crossbar is provided in the middle, and the crossbar is connected to the connecting rod 28; the blade surfaces of the first and second stirring blades are inclined upwards, and the first and second stirring blades are symmetrically arranged. During stirring, the tops of the first and second stirring blades separate the water flow, and because the blades are inclined upwards, the liquid can move upwards. Compared with the prior art where the blades simply stir the water flow upwards, this technical solution diverts the flow and causes the mud to move upwards, resulting in a significantly better stirring effect. The mounting frame 27 is also provided with a flow guiding component, which includes a support rod 30, a vertical rod 31 and a flow guiding plate 32; the support rod 30 is connected to the mounting frame 27; the vertical rod 31 is connected to the support rod 30, and the flow guiding plate 32 is located at the bottom of the vertical rod 31; the flow guiding plate 32 is used to guide the mud to the top of the stirring blade 29.
[0035] In one possible embodiment, three stirring components are included, which can stir mud at different depths.
[0036] Example 2:
[0037] A mud mixing control method uses the mud mixing device described in Example 1. The mixing device further includes a control box. The first valve, second valve, third valve, delivery pump, and mixing device are electrically connected to the control box. A PLC device is installed in the control box to control the operation of each device. This achieves the purpose of automatic control and automatic mud pouring.
[0038] The automatic control method for mud mixing includes the following steps:
[0039] S1. Based on the initial conditions set, including the working time of the stirring device, the number of box-type storage tanks involved in the stirring, and the single working time of the stirring device, the system automatically calculates the number of box-type storage tank stirring devices to be started each time and compares it with the maximum permissible working load value. If it is less than the load value, the next step can be carried out.
[0040] S2. After each stirring is started, the system needs to verify whether the stirring device has started successfully (feedback signal from the auxiliary contact of the magnetic starter). If it has not started, the system will alarm.
[0041] S3. After each stirring time reaches the set time, the stirring device will automatically stop for this operation and start the next batch of stirring devices in sequence.
[0042] S4. Automatically record and save the working time of each tank each time.
[0043] The automatic mud mixing and pouring method includes the following steps:
[0044] S11. The PLC device in the control box performs a self-test after the system is started for the first time, and automatically generates a pouring sequence plan according to the set initial conditions, the empty tank position of the box storage tank and the box storage tank number, and executes it after confirmation.
[0045] S12. Start the mud mixing device in the pouring tank;
[0046] S13. According to the plan, switch the valves first. Electric valves are switched automatically by the system, and manual valves are switched manually. However, the control interface has prompts and a confirmation button for manually completing the switch. Close all valves on pipelines not involved in this slurry pouring and on common pipelines. Close the first and second valves of the pouring tank. Open the second valve of the pouring tank conveying pump and the third valve of the conveying pump and the pouring tank.
[0047] S14. After the valve switching is completed, the system waits for the mixing device to start working; after the mixing device has worked for the required time and stops, the system starts the delivery pump to perform the slurry pouring operation.
[0048] S15. After the delivery pump starts, the system starts the mud mixing device of the second mud storage tank to be poured.
[0049] S16. Based on the operating current of the transfer pump, determine whether the heavy slurry in this tank has been completely pumped out, and monitor the liquid level feedback when the tank is full. If a feedback signal is received during the slurry pouring process, immediately stop the pump, close the first and third valves, and issue an alarm.
[0050] S17. After the slurry is poured into this tank, turn off the conveying pump and the mixing device of the second slurry storage tank to be poured. Close the second valve of the conveying pump of this tank and the third valve between the pump and the pouring tank. Open the second valve of the conveying pump of the adjacent pouring tank and the valve between the pump discharge pipe and the previous pouring tank. After confirming the valve status, start the conveying pump and implement monitoring.
[0051] S18. After the delivery pump starts, the system starts the mixing device of the next slurry tank storage tank to be poured.
[0052] S19. If the settings indicate that a certain tank's transfer pump is damaged, the transfer pump of the adjacent tank will take over the work, and the corresponding valve status will be switched according to the new process.
[0053] S20. After all the pouring operations are completed, the system will prompt the staff to check and conduct volume density verification of each tank, and modify the content of the reminder sign.
[0054] S21. Record the pouring process and modify the system data based on the staff's verification of the volume density data of each tank.
[0055] The beneficial effects of this application are: multiple mud mixing units can be interconnected, facilitating mud transfer and pouring operations, and improving operational flexibility. The double sealing ring and clamping ring design effectively prevents mud leakage, ensuring clean and efficient equipment operation. The V-shaped mixing blades combined with the flow guiding components enhance the mixing effect, resulting in more uniform mud mixing.
[0056] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A device for automatic mud mixing, characterized in that: Includes multiple The mud mixing unit includes a box-type storage tank, a feeding pipe, a conveying pump, a transmission pipe, an inlet pipe, a loading pipe, a discharge pipe, and a mixing device. The mixing device includes a mixing mechanism and a driving mechanism; the driving mechanism is located on the top of the box-type storage tank; the driving mechanism is connected to the mixing mechanism; the mixing mechanism is located inside the box-type storage tank; one end of the discharge pipe is connected to the box-type storage tank and the other end is connected to the feeding pipe; one end of the conveying pump is connected to the feeding pipe and the other end is connected to the inlet pipe through the transmission pipe; one end of the loading pipe is connected to the inlet pipe and the other end is connected to the box-type storage tank. The discharge pipe is located below the box-type feed pipe; the loading pipe is located at the top of the box-type storage tank; the feeding pipes of multiple mud mixing units are interconnected; the feed pipes of multiple mud mixing units are interconnected.
2. The device for automatic mud mixing according to claim 1, characterized in that: A first valve is installed on the discharge pipe; a second valve is installed between the conveying pump and the discharge pipe; and a third valve is installed on the discharge pipe.
3. The device for automatic mud mixing according to claim 1, characterized in that: Multiple mud mixing units are arranged side by side; a protective railing is provided on the top of the box-type storage tank; and ladders are also provided on the mud mixing units located on both sides.
4. The device for automatic mud mixing according to claim 1, characterized in that: The mud mixing unit includes three mixing devices; the three mixing devices are arranged side by side on the box-type storage tank.
5. The device for automatic mud mixing according to claim 4, characterized in that: The drive mechanism includes an output shaft; a sealing assembly is provided on the output shaft; the sealing assembly includes a bearing and a sealing cover; the bearing is sleeved on the output shaft; the sealing cover is located inside the tank of the box-type storage tank; the sealing cover is provided with a sealing groove and a bearing groove; the sealing groove is located below the bearing groove; the bearing groove is used to accommodate the bearing; a sealing ring is provided in the sealing groove.
6. The device for automatic mud mixing according to claim 5, characterized in that: The sealing ring includes a bottom ring, an outer wall, and an inner wall; the outer wall is located outside the bottom ring, and the inner wall is located inside the bottom ring; the height of the inner wall is lower than that of the outer wall; a first sealing cavity is formed between the outer wall and the inner wall; a second sealing cavity is provided between the inner wall and the output shaft.
7. The device for automatic mud mixing according to claim 6, characterized in that: A clamping ring is provided inside the first sealing cavity to keep the outer wall tightly against the output shaft.
8. The device for automatic mud mixing according to claim 7, characterized in that: Two sealing rings are provided in the sealing groove; the two sealing rings are arranged in a mirror image; sealing oil is provided in the first sealing cavity and the second sealing cavity.