Adjustable mud scraper
By designing an adjustable expansion airbag and rubber convex strip structure in the mud scraper, the problem that existing mud scrapers cannot completely remove mud on the drill rod surface is solved, and efficient mud removal and adaptive design is achieved.
Patent Information
- Application Number
- CN202421650033.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Due to the limitations of the rubber disc material, existing mud scrapers cannot effectively apply sufficient pressure and force to completely remove mud from the surface of the drill rod.
An adjustable mud scraper is designed, with a U-shaped groove on the surface of the rubber disc, an arc groove and an L-shaped groove are provided inside the U-shaped groove. An expansion air bag is provided in the arc groove. Multiple groups of rubber convex strips are provided on the inner ring wall of the expansion air bag, and the expansion air bag is inflated through the inflation nozzle to make it closely fit with the outer wall of the drill rod, so that the mud is removed through the rubber convex strips.
Through the design of the inflation airbag and the rubber convex strip, efficient removal of mud on the drill rod surface is achieved, the scraping effect is improved, and the adjustable design is adapted to drill rods of different diameters.
Smart Images
Figure CN222863314U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil drilling, in particular to an adjustable mud scraper. Background Art
[0002] During drilling operations in oil fields, mud adheres to the drill pipe, affecting the work of the drill pipe. At the same time, if the mud on the drill pipe is brought out to the drilling platform, it will seriously affect the working environment; therefore, it is very necessary to remove the mud on the drill pipe.
[0003] In the prior art, a mud scraper is usually used to clean the mud on the drill rod. The mud scraper is a rubber disk, and the drill rod passes through the central circular hole of the rubber disk to achieve the effect of scraping off the mud. However, there are some problems with the traditional mud scraper. Due to the limitation of the material of the rubber disk, it is impossible to effectively apply sufficient pressure and force to completely remove the mud from the surface of the drill rod. Therefore, an adjustable mud scraper is proposed to solve the above problems. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides an adjustable mud scraper, which aims to improve the problem in the prior art that due to the limitation of the rubber disc material, sufficient pressure and force cannot be effectively applied to completely remove the mud from the surface of the drill pipe.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable mud scraper, including a rubber disc, a U-shaped groove is provided on the surface of the rubber disc, an arc groove and an L-shaped groove are provided inside the U-shaped groove, an inflatable airbag is provided inside the arc groove, and a plurality of groups of rubber convex strips distributed in an array are provided on the inner circle wall of the inflatable airbag.
[0006] As a further description of the above technical solution:
[0007] A closed component is arranged inside the U-shaped groove, and the closed component includes an insert block, one side of the insert block and the center of the U-shaped groove form a closed circular hole, and a semi-arc groove is opened, and the semi-arc groove and the arc groove form a closed annular groove.
[0008] As a further description of the above technical solution:
[0009] A groove is provided on the other side of the insert block, and two groups of symmetrically arranged sliding blocks are slidably connected inside the groove, and the two groups of sliding blocks are elastically connected via a return spring.
[0010] As a further description of the above technical solution:
[0011] The side wall of the sliding block is fixedly connected to a limiting block, and the limiting block penetrates and is slidably connected to the side wall of the insert block.
[0012] As a further description of the above technical solution:
[0013] A guide rod is fixedly connected between the inner walls of the groove, and the guide rod penetrates and is slidably connected to the side wall of the sliding block.
[0014] As a further description of the above technical solution:
[0015] The inner wall of the groove is rotatably connected with a rotating rod, the end of the rotating rod is fixedly connected with a gripping rod, the side wall of the rotating rod is hinged with a hinged rod, and the hinged rod is hinged with the side wall of the sliding block.
[0016] As a further description of the above technical solution:
[0017] The expansion airbag is arranged in a ring shape, and a disconnection point and an inflation nozzle are arranged on the surface.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, the inside of the expansion airbag is inflated by the inflation nozzle, so that the expansion airbag expands, and the inner ring wall thereof is closely attached to the outer wall of the drill rod. When the drill rod moves upward, the mud attached to the outer wall of the drill rod is removed by the rubber convex strip, thereby improving the scraping effect;
[0020] 2. In the utility model, the handle is manually held and the rotating rod is rotated, so that the two sets of hinged rods drive the two sets of slide blocks to move toward each other, so that the limit block is separated from the depth of the L-shaped groove, thereby facilitating the removal of the closing component and improving the disassembly and assembly efficiency of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The utility model is a schematic diagram of the overall structure of an adjustable mud scraper.
[0022] Figure 2 The utility model provides a schematic diagram of the expansion air bag structure of an adjustable mud scraper.
[0023] Figure 3 The utility model is a schematic diagram of the closed component structure of an adjustable mud scraper.
[0024] Legend: 1. Rubber disc; 2. U-shaped groove; 21. Arc groove; 22. L-shaped groove; 3. Inflatable airbag; 31. Disconnection point; 32. Inflating nozzle; 33. Rubber convex strip; 4. Closure component; 41. Insert block; 42. Semi-arc groove; 43. Groove; 44. Slider; 441. Return spring; 45. Limit block; 46. Guide rod; 47. Turn rod; 48. Grip rod; 49. Articulated rod. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Reference Figure 1 - Figure 2 The utility model provides an embodiment: an adjustable mud scraper, comprising a rubber disc 1, a U-shaped groove 2 is provided on the surface of the rubber disc 1, and a notch is formed on the surface of the rubber disc 1, so that the rubber disc 1 is conveniently sleeved on the outer wall of the drill rod from the side, and an arc groove 21 and an L-shaped groove 22 are provided inside the U-shaped groove 2, and the arc groove 21 is used to limit the expansion airbag 3, so that the expansion airbag 3 is stuck inside the arc groove 21 when inflated, and the expansion airbag 3 is arranged inside the arc groove 21, and the expansion airbag 3 is arranged in an annular shape, and a disconnection 31 and an inflation nozzle 32 are arranged on the surface. A plurality of rubber convex strips 33 distributed in an array are arranged on the inner wall of the expansion airbag 3. The disconnection 31 of the expansion airbag 3 is convenient for sleeve connection on the outer wall of the drill rod. The inflation nozzle 32 is used to inflate the inside of the expansion airbag 3. When the expansion airbag 3 expands, its inner wall is tightly fitted with the outer wall of the drill rod. Therefore, when the drill rod moves upward, the mud attached to the outer wall of the drill rod is removed through the rubber convex strips 33, thereby improving the scraping effect.
[0027] Reference Figure 1 , Figure 3 A closing component 4 is provided inside the U-shaped groove 2. The closing component 4 is used to close the U-shaped groove 2. The closing component 4 includes an insert block 41. One side of the insert block 41 forms a closed circular hole with the center of the U-shaped groove 2, and a semi-arc groove 42 is provided. The semi-arc groove 42 and the arc groove 21 form a closed annular groove. The semi-arc groove 42 and the arc groove 21 are used to limit the inflatable airbag 3 to improve the stability of the inflatable airbag 3 during operation. A groove 43 is provided on the other side of the insert block 41. Two groups of symmetrically arranged sliders 44 are slidably connected inside the groove 43. The two groups of sliders 44 are elastically connected by a return spring 441. The side wall of the slider 44 is fixedly connected with a limit block 45. The limit block 45 penetrates and is slidably connected to the side wall of the insert block 41. The elastic force support of the return spring 441 on the two groups of sliders 44 causes the limit block 45 to leak out from the side wall of the groove 43, so that it is inserted into the depth of the L-shaped groove 22 to fix the entire insert block 41. A guide rod 46 is fixedly connected between the inner walls of the groove 43. The guide rod 46 penetrates and is slidably connected to the side wall of the slider 44. The guide rod 46 is used to provide guidance and limit the two sets of sliders 44, so that the two sets of sliders 44 can move stably inside the groove 43.
[0028] Reference Figure 1 , Figure 3 The inner wall of the groove 43 is rotatably connected with a rotating rod 47, the end of the rotating rod 47 is fixedly connected with a gripping rod 48, the side wall of the rotating rod 47 is hinged with a hinged rod 49, and the hinged rod 49 is hinged with the side wall of the slider 44. The gripping rod 48 is used for manual gripping, and by rotating the rotating rod 47, the two groups of hinged rods 49 drive the two groups of sliders 44 to move toward each other, so that the limit block 45 is separated from the deep part of the L-shaped groove 22, so as to facilitate the removal of the closing component 4 and improve the efficiency of disassembly and assembly of the mud scraper.
[0029] Working principle: During use, first put the rubber disc 1 on the outer wall of the drill rod, and then inflate the inside of the expansion airbag 3 through the inflation nozzle 32, so that the expansion airbag 3 expands, and its inner ring wall is tightly attached to the outer wall of the drill rod. During the upward movement of the drill rod, the mud attached to the outer wall of the drill rod is removed through the rubber convex strip 33 to improve the scraping effect. When the scraper needs to be removed, it is manually held by the grip 48, and the rotating rod 47 is rotated, so that the two sets of hinged rods 49 drive the two sets of sliders 44 to move toward each other, so that the limit block 45 is separated from the deep part of the L-shaped groove 22, so as to facilitate the removal of the closing component 4 and improve the efficiency of disassembly and assembly of the scraper.
[0030] It is worth noting that the present mud scraper has an adjustable function. By changing the inflation amount of the expansion airbag 3, its expansion degree can be controlled to adapt to drill rods of different diameters. At the same time, the setting of the rubber convex strip 33 also increases the effect of scraping mud, making the mud scraper more efficient during operation.
[0031] In addition, the scraper has the characteristics of simple structure and convenient operation, and can be widely used in various drilling projects. During use, it is only necessary to properly adjust the inflation volume of the expansion airbag 3 according to the diameter of the drill rod to achieve a good scraping effect. At the same time, the design of the closing component 4 also facilitates the disassembly and assembly of the scraper, thereby improving work efficiency.
[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An adjustable mud scraper, comprising a rubber disc (1), characterized in that: A U-shaped groove (2) is provided on the surface of the rubber disk (1), an arc-shaped groove (21) and an L-shaped groove (22) are provided inside the U-shaped groove (2), an expansion airbag (3) is provided inside the arc-shaped groove (21), and a plurality of groups of rubber convex strips (33) distributed in an array are provided on the inner wall of the expansion airbag (3).
2. The adjustable mud scraper according to claim 1, characterized in that: A closed component (4) is arranged inside the U-shaped groove (2), and the closed component (4) comprises an insert block (41), one side of the insert block (41) and the center of the U-shaped groove (2) form a closed circular hole, and a semi-arc groove (42) is provided, and the semi-arc groove (42) and the arc groove (21) form a closed annular groove.
3. The adjustable mud scraper according to claim 2, characterized in that: A groove (43) is provided on the other side of the insert block (41), and two groups of symmetrically arranged sliding blocks (44) are slidably connected inside the groove (43), and the two groups of sliding blocks (44) are elastically connected via a return spring (441).
4. The adjustable mud scraper according to claim 3, characterized in that: The side wall of the sliding block (44) is fixedly connected to a limiting block (45), and the limiting block (45) penetrates and is slidably connected to the side wall of the insert block (41).
5. The adjustable mud scraper according to claim 3, characterized in that: A guide rod (46) is fixedly connected between the inner walls of the groove (43), and the guide rod (46) passes through and is slidably connected to the side wall of the slide block (44).
6. The adjustable mud scraper according to claim 3, characterized in that: The inner wall of the groove (43) is rotatably connected to a rotating rod (47), the end of the rotating rod (47) is fixedly connected to a gripping rod (48), the side wall of the rotating rod (47) is hinged to a hinged rod (49), and the hinged rod (49) is hinged to the side wall of the slider (44).
7. The adjustable mud scraper according to claim 1, characterized in that: The expansion airbag (3) is arranged in a ring shape, and a disconnection point (31) and an inflation nozzle (32) are arranged on the surface.