Splash-proof mud scraper

Abstract

The utility model relates to the technical field of drilling platform drilling and mining splash -proof mud scraping, especially to a kind of splash-proof mud scraper. Including first fixed seat, second fixed seat, upper mud scraping plate and lower mud scraping plate, the section of first fixed seat and second fixed seat is semicircular ring, the both ends of first fixed seat and second fixed seat are abutted, upper mud scraping plate and lower mud scraping plate are located the inner wall surface of first fixed seat and second fixed seat, the surface of upper mud scraping plate and lower mud scraping plate is screw threaded and penetrated with several fixed screw rods, the position of first fixed seat and second fixed seat corresponding fixed screw rod is provided with fixed hole, the inner wall of fixed hole and the circular surface of fixed screw rod are screw threaded, the both side surfaces of first fixed seat and second fixed seat are provided with several mounting holes, the upper surface of first fixed seat and second fixed seat is provided with upper reinforcing plate. The utility model provides a kind of splash-proof mud scraper, which has the advantage of conveniently cleaning the drilling pipe in drilling operation.

Description

Technical Field

[0001] This utility model relates to the field of anti-splash mud scraping technology for drilling platforms, and in particular to a splash-proof mud scraper. Background Technology

[0002] In drilling operations, the mud scraper is one of the most common accessories in drilling tools. It is mainly used to remove mud and other deposits generated during the drilling process. The mud scraper generally adopts a mechanical scraper structure and comes into direct contact with the drilling mud. While removing mud, some splashing will occur. In order to reduce splashing, common solutions include improving the design of the scraper to make it contact the mud more smoothly. This is more common in drilling and production operations on drilling platforms.

[0003] Existing technologies, such as the utility model patent with publication number CN221053626U, disclose a mud scraping device. This patent includes a first base and a second base that are rotatably connected. The frame can be unfolded or merged by rotation, allowing it to be mounted outside the drill string after drilling. A mud scraper mounted on the frame can be used to clean the mud from the drill string. The mud scraping device can be easily disassembled and assembled, allowing for cleaning of different drill strings by adjusting its arrangement. This reduces the number of mud scraping devices required at the construction site and lowers construction costs.

[0004] During drilling operations on drilling platforms, it has been found that as drilling progresses, the drilling mud not only cools the drill bit but also carries cuttings, cleans the wellbore, and maintains wellbore stability. As a result, a significant amount of mud mixture adheres to the surface of the drill pipe. The solid particles in the mud are in contact with the surface of the drilling tools for extended periods, which accelerates the wear of the drilling tools, leading to a shorter lifespan of the drilling equipment and increased maintenance and replacement costs. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where, as drilling operations progress, drilling mud not only cools the drill bit but also carries cuttings, cleans the wellbore, and maintains wellbore stability. As a result, a significant amount of mud mixture adheres to the surface of the drill pipe. The solid particles in the mud are in contact with the drilling tool surface for extended periods, which accelerates the wear of the drilling tool, leading to a shortened lifespan of the drilling equipment and increased maintenance and replacement costs.

[0006] To solve the above-mentioned technical problems, this utility model provides a splash-proof scraper, including: a first fixed base, a second fixed base, an upper scraper plate, and a lower scraper plate. The cross-sections of the first fixed base and the second fixed base are semi-circular, and the two ends of the first fixed base and the second fixed base abut against each other. The upper scraper plate and the lower scraper plate are both located on the inner wall surface of the first fixed base and the second fixed base. Several fixing screws are threaded through the surface of the upper scraper plate and the lower scraper plate. Fixing holes are opened in the first fixed base and the second fixed base at the positions of the fixing screws. The inner wall of the fixing hole is threaded to the arc surface of the fixing screw.

[0007] The aforementioned components achieve the following effects: by designing the first and second fixed seats as interlocking semi-circular ring structures, they can be easily fitted onto the outside of the circular shaft that needs to be scraped. The upper and lower scraper plates are directly fixed to the inner wall of the fixed seat by fixing screws. This threaded connection method makes the installation, adjustment, and replacement of the scraper plates very convenient. The internal thread of the fixing screw and the fixing hole provides a firm locking force, ensuring that the scraper plates will not loosen or fall off when working on the high-speed rotating shaft. The overall structure is simple and compact, effectively scraping off the adhering substances on the shaft surface. Due to its ring-shaped design, the scraper plates maintain a uniform fit with the shaft surface, thereby preventing mud or materials from splashing out from the side, achieving the core function of splash prevention.

[0008] Preferably, both sides of the first and second fixing seats are provided with a plurality of mounting holes, the upper surface of the first and second fixing seats is provided with an upper reinforcing plate, the lower surface of the first and second fixing seats is provided with a lower reinforcing plate, and the surfaces of the upper and lower reinforcing plates are provided with a plurality of through holes, the inner wall of the through holes is threaded with a mounting screw, and the arc surface of the mounting screw is threaded to the inner wall of the mounting hole.

[0009] The effect achieved by the above components is as follows: by adding upper and lower reinforcing plates and fastening them together with the first and second fixed seats with mounting screws, the integrity and mechanical strength of the entire scraper structure are greatly enhanced. This effectively prevents the two semi-circular fixed seats from deforming or misaligning when subjected to uneven forces or vibrations, thus ensuring the long-term stability and reliability of the scraper.

[0010] Preferably, both ends of the first and second fixing seats are L-shaped, the cross-sectional dimensions of the first and second fixing seats are matched, and both the first and second fixing seats are stainless steel seats.

[0011] The effect achieved by the above components is as follows: the "L"-shaped cross-section design at both ends of the first and second fixing seats allows them to fit together or abut tightly when they are connected. This not only improves the accuracy and convenience of the connection, but also forms an effective labyrinth seal structure, which can significantly enhance the sealing performance at the connection point and further prevent mud and water from leaking from the joint between the two halves of the fixing seats.

[0012] Preferably, both sides of the upper and lower scraper blades are provided with connecting grooves, and the cross-section of the connecting grooves is vertical.

[0013] The aforementioned components achieve the following effect: vertical connecting grooves are created on both sides of the scraper blade surface, providing additional mounting or functional expansion interfaces for the scraper blade. For example, these grooves can be used to install softer sealing strips or scraper blades to enhance the sealing effect with the shaft, achieving better splash prevention and scraping performance.

[0014] Preferably, both the upper and lower scraper blades are made of cemented carbide plates, and the cross-sectional dimensions of the upper and lower scraper blades are adapted to the cross-sectional dimensions of the first and second fixed seats.

[0015] The effect achieved by the above components is as follows: using cemented carbide as the material of the scraper blade gives it extremely high hardness, wear resistance and strength, enabling it to withstand the intense friction and scouring of materials for a long time, greatly extending the service life of the scraper blade and reducing the frequency of maintenance and replacement.

[0016] Compared with related technologies, the splash-proof mud scraper provided by this utility model has the following beneficial effects:

[0017] This utility model provides a splash-proof scraper. Structurally, it employs a split semi-circular ring design for the first and second fixing seats, allowing the scraper to be directly mounted on the rotating shaft without disassembling the shaft end, greatly simplifying the installation and maintenance process. The upper and lower scraper plates are tightly fixed to the inner wall of the fixing seats via fixing screws, achieving adjustable and secure installation angles and clamping forces for the scraper plates, ensuring uniform and stable scraping performance. The added upper and lower reinforcing plates effectively enhance the rigidity and stability of the overall structure, preventing deformation or vibration during high-speed operation. The joint between the first and second fixing seats adopts an "L"-shaped interlocking design, combined with wear-resistant scraper plates made of hard alloy material, significantly improving the sealing performance at the interface, effectively preventing mud and water splashing, and greatly enhancing the scraper's wear resistance and service life under harsh working conditions. In summary, this scraper combines convenient installation, reliable splash prevention, efficient sludge scraping, and long-lasting durability, making its overall performance significantly superior to traditional integrated or inconveniently fixed scraper devices. Attached Figure Description

[0018] Figure 1A schematic diagram of the structure of a splash-proof mud scraper provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the disassembled structure of the three-dimensional structure shown.

[0020] Figure 3 for Figure 1 A partial structural diagram of the three-dimensional structure shown;

[0021] Figure 4 for Figure 1 The diagram shows a partial structural diagram of the lower and upper scrapers.

[0022] The following are the labels in the diagram: 1. Upper reinforcing plate; 2. Lower reinforcing plate; 3. First fixing seat; 4. Second fixing seat; 5. Through hole; 6. Upper scraper; 7. Lower scraper; 8. Connecting groove; 9. Fixing screw; 10. Fixing hole; 11. Mounting hole; 12. Mounting screw. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 4 This utility model provides a splash-proof mud scraper, comprising: a first fixed base 3, a second fixed base 4, an upper mud scraper 6, and a lower mud scraper 7. The cross-sections of the first fixed base 3 and the second fixed base 4 are semi-circular, and the two ends of the first fixed base 3 and the second fixed base 4 abut against each other. The upper mud scraper 6 and the lower mud scraper 7 are both located on the inner wall surfaces of the first fixed base 3 and the second fixed base 4. Several fixing screws 9 are threaded through the surfaces of the upper mud scraper 6 and the lower mud scraper 7. Fixing holes 10 are provided in the first fixed base 3 and the second fixed base 4 at the positions corresponding to the fixing screws 9. The inner wall of the fixing hole 10 is threadedly connected to the arc surface of the fixing screw 9.

[0026] In the embodiments of this utility model, please refer to Figure 2 , Figure 3 and Figure 4Both sides of the first fixing seat 3 and the second fixing seat 4 are provided with a plurality of mounting holes 11. An upper reinforcing plate 1 is provided on the upper surface of the first fixing seat 3 and the second fixing seat 4, and a lower reinforcing plate 2 is provided on the lower surface of the first fixing seat 3 and the second fixing seat 4. Both the upper reinforcing plate 1 and the lower reinforcing plate 2 are provided with a plurality of through holes 5. A mounting screw 12 is threaded through the inner wall of the through hole 5. The arc surface of the mounting screw 12 is threadedly connected to the inner wall of the mounting hole 11. Both ends of the first fixed seat 3 and the second fixed seat 4 are L-shaped. The cross-sectional dimensions of the first fixed seat 3 and the second fixed seat 4 are matched. Both the first fixed seat 3 and the second fixed seat 4 are stainless steel seats. Both sides of the surface of the upper scraper 6 and the lower scraper 7 are provided with connecting grooves 8. The cross-section of the connecting grooves 8 is vertical. Both the upper scraper 6 and the lower scraper 7 are hard alloy plates. The cross-sectional dimensions of the upper scraper 6 and the lower scraper 7 are matched with the cross-sectional dimensions of the first fixed seat 3 and the second fixed seat 4.

[0027] The working principle of the splash-proof scraper provided by this utility model is as follows: First, two semi-circular annular first fixing seats 3 and second fixing seats 4 are wrapped around the rotating shaft that needs to be scraped, and the two ends are aligned and abutted to form a complete annular fixing base. Then, the upper scraper 6 and the lower scraper 7 are respectively fastened to the inner ring surface of the fixing seat by fixing screws 9. The inner edge of the scraper maintains close contact with the surface of the rotating shaft or a preset small gap. After installation, the upper reinforcing plate 1 and the lower reinforcing plate 2 and their mounting screws 12 can be used to further strengthen the overall structure to ensure that it remains stable even in a vibration environment. When the shaft starts to rotate, the mud, material or water attached to its surface attempts to move with the shaft. At this time, the blades of the closely contacting scraper will effectively block and scrape off these attachments, preventing them from continuing to rotate with the shaft. The scraped material falls down along the scraper under the action of gravity. At the same time, due to the tight fit between the scraper and the shaft surface and the labyrinth seal effect formed by the "L"-shaped structure at the joint of the first and second fixed seats 4, the scraped material and liquid are greatly restricted from splashing radially out of the gap between the scraper and the shaft and the joint of the fixed seat. Instead, they are guided to be discharged in a concentrated manner along a predetermined path, thereby achieving the function of "splash prevention".

[0028] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A splash-proof mud scraper, characterized in that, include: The first fixed seat (3), the second fixed seat (4), the upper scraper (6) and the lower scraper (7) are connected. The cross-section of the first fixed seat (3) and the second fixed seat (4) is semi-circular. The two ends of the first fixed seat (3) and the second fixed seat (4) are in contact with each other. The upper scraper (6) and the lower scraper (7) are both located on the inner wall surface of the first fixed seat (3) and the second fixed seat (4). The surfaces of the upper scraper (6) and the lower scraper (7) are threaded with several fixing screws (9). The first fixed seat (3) and the second fixed seat (4) are provided with fixing holes (10) at the positions of the fixing screws (9). The inner wall of the fixing hole (10) is threaded to the arc surface of the fixing screw (9).

2. A splash-proof scraper according to claim 1, characterized in that, The first fixing seat (3) and the second fixing seat (4) are provided with a number of mounting holes (11) on both sides. The upper surface of the first fixing seat (3) and the second fixing seat (4) is provided with an upper reinforcing plate (1). The lower surface of the first fixing seat (3) and the second fixing seat (4) is provided with a lower reinforcing plate (2). The surfaces of the upper reinforcing plate (1) and the lower reinforcing plate (2) are provided with a number of through holes (5). The inner wall of the through hole (5) is threaded with a mounting screw (12). The arc surface of the mounting screw (12) is threaded with the inner wall of the mounting hole (11).

3. A splash-proof scraper according to claim 1, characterized in that, The first fixing seat (3) and the second fixing seat (4) have "L" shaped cross sections at both ends. The cross-sectional dimensions of the first fixing seat (3) and the second fixing seat (4) are compatible. Both the first fixing seat (3) and the second fixing seat (4) are stainless steel seats.

4. A splash-proof scraper according to claim 1, characterized in that, Both sides of the upper scraper (6) and the lower scraper (7) are provided with connecting grooves (8), and the cross-section of the connecting grooves (8) is vertical.

5. A splash-proof scraper according to claim 1, characterized in that, The upper scraper (6) and the lower scraper (7) are both hard alloy plates, and the cross-sectional dimensions of the upper scraper (6) and the lower scraper (7) are adapted to the cross-sectional dimensions of the first fixed seat (3) and the second fixed seat (4).

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