Sealing assembly for roller bit

Abstract

The utility model relates to the technical field of roller bits, and discloses a sealing assembly for a roller bit, which comprises a bit body, the inner wall of the bit body is movably sleeved with a mounting seat, the inner wall of the bit body rotates on the outer wall of the mounting seat through balls, the inner wall of the bit body is movably sleeved with an inner sealing strip, and the inner sealing strip rotates on the outer wall of the mounting seat through balls. First positioning assemblies are evenly distributed on the inner side of the inner sealing strip. The inner sealing strip, the outer sealing strip, the first positioning assembly and the second positioning assembly are matched, the first positioning assembly and the second positioning assembly are arranged, the effect that the inner sealing strip and the outer sealing strip are fixed to the drill bit body is achieved, and the problem that the direct sleeving mode of a single rubber ring is unstable is effectively solved; the mode that the first positioning assembly and the second positioning assembly are connected with the inner sealing strip and the outer sealing strip and the drill bit body is adopted, the inner sealing strip and the outer sealing strip can be limited, and therefore the stability of the inner sealing strip and the outer sealing strip after installation is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of roller drill bits, in particular to a sealing assembly for a roller drill bit. Background Art

[0002] The most widely used type of drilling bit, the roller drill bit's cutting teeth alternately contact the wellbore during operation, resulting in low rock-breaking torque, a small contact area between the cutting teeth and the wellbore, and high specific pressure, making it easier to penetrate the formation. The long working edge length also reduces wear. Roller drill bits are adaptable to a wide range of formations, from soft to hard. However, mining drill bits are subject to high axial pressure and impact loads, and the hardness of the mineral reservoirs makes the bearing system susceptible to damage. Currently, mining roller drill bit bearing systems are categorized as either open or sealed, depending on the sealing structure.

[0003] However, the bearing system of the existing roller drill bit uses a single rubber ring sealing method. As the roller drill bit is used more and more frequently, the time and frequency of contact between the roller drill bit and the mineral also increase, and the wear of the roller drill bit also increases. The rubber ring in the single rubber ring seal is directly installed between the roller drill bit and the mounting seat. In this case, the rubber ring is also likely to fall off when installed on the roller drill bit. At the same time, the direct installation method also reduces the stability of the sealing ring after installation, thereby reducing the practicality of the sealing ring. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a sealing assembly for a roller drill bit, which has the advantages of achieving double sealing of the roller drill bit, strengthening the stability of the sealing ring after installation, and preventing the sealing ring from falling off, thereby solving the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a sealing assembly for a roller drill bit, comprising a drill bit body, the inner wall of the drill bit body being movably sleeved with a mounting seat, the inner wall of the drill bit body rotating on the outer wall of the mounting seat via a ball bearing, the inner wall of the drill bit body being movably sleeved with an inner sealing strip, a No. 1 positioning assembly being evenly distributed on the inner side of the inner sealing strip, and an end of the No. 1 positioning assembly away from the inner sealing strip being movably connected to the drill bit body, the inner wall of the drill bit body being movably sleeved with an outer sealing strip located outside the inner sealing strip, a No. 2 positioning assembly being evenly distributed on the inner side of the outer sealing strip, and an end of the No. 2 positioning assembly away from the outer sealing strip being movably connected to the drill bit body, and a base being provided at the lower end of the mounting seat being located below the drill bit body.

[0006] Preferably, an inner groove is provided on the inner wall of the drill body, and the inner wall of the inner groove is rollingly connected to the outer wall of the mounting seat through a ball bearing, an inner limit plate located outside the inner groove is fixedly installed on the inner wall of the drill body, and the inner wall of the inner limit plate is movably connected to the outer wall of the inner sealing strip, and the inner wall of the inner limit plate is evenly distributed with inner mounting grooves for installing the No. 1 positioning component, an outer limit plate located outside the inner limit plate is fixedly installed on the inner wall of the drill body, and the inner wall of the outer limit plate is movably connected to the outer wall of the outer sealing strip, and the inner wall of the outer limit plate is evenly distributed with outer mounting grooves for installing the No. 2 positioning component.

[0007] Preferably, brackets are evenly distributed on the upper end surface of the base, a round rod is sleeved on the inner wall of the upper end of the bracket, and one end of the round rod is fixedly connected to the outer wall of the mounting seat, and the other end of the round rod is fixedly mounted with a disc located outside the bracket.

[0008] Preferably, an outer groove is provided on the outer wall of the mounting seat, and the inner wall of the outer groove is rotatably connected to the outer wall of the ball, an inner baffle is fixedly installed on the outer wall of the mounting seat, and the inner side of the inner baffle is movably connected to the outer wall of the inner limit plate, and an outer baffle is fixedly installed on the outer wall of the mounting seat, and the inner side of the outer baffle is movably connected to the outer wall of the outer limit plate.

[0009] Preferably, the No. 1 positioning component includes a No. 1 rubber column, one end of which is fixedly connected to the outer wall of the inner sealing strip, and the end of the No. 1 rubber column away from the inner sealing strip is fixedly installed with a No. 1 ball, and the outer wall of the No. 1 ball is movably connected to the inner wall of the inner mounting groove.

[0010] Preferably, the No. 2 positioning assembly includes a No. 2 rubber column and a No. 2 ball, one end of the No. 2 rubber column is fixedly connected to the No. 2 ball, the other end of the No. 2 rubber column is fixedly connected to the outer sealing strip, and the outer wall of the No. 2 ball is movably connected to the inner wall of the outer mounting groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The utility model realizes the function of fixing the inner and outer sealing strips on the drill bit body through the cooperation between the inner and outer sealing strips, the No. 1 positioning component and the No. 2 positioning component, and utilizes the setting of the No. 1 positioning component and the No. 2 positioning component, effectively solving the problem of instability of the direct sleeve connection method of a single rubber ring. The No. 1 positioning component and the No. 2 positioning component are used to connect the inner and outer sealing strips with the drill bit body, which can limit the position of the inner and outer sealing strips, thereby reinforcing the stability of the inner and outer sealing strips after installation.

[0013] 2. The utility model realizes the sealing effect between the drill body and the mounting seat through the cooperation between the drill body, the mounting seat, the inner sealing strip and the outer sealing strip, and utilizes the setting of the inner sealing strip and the outer sealing strip, effectively solving the problem of poor sealing effect of a single rubber ring, and adopts a double sealing method of the inner sealing strip and the outer sealing strip to increase the sealing effect between the mounting seat and the drill body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a side view of the mounting base of the utility model;

[0016] Figure 3 This is a cross-sectional view of the drill bit body of the utility model;

[0017] Figure 4 It is a cross-sectional view of the inner groove of the utility model;

[0018] Figure 5 This is a side view of the second positioning assembly of the present utility model;

[0019] Figure 6 It is a side view of the outer groove of the utility model.

[0020] In the figure: 1. Drill bit body; 2. Mounting seat; 3. Ball; 4. Inner sealing strip; 5. Positioning assembly No. 1; 501. Rubber column No. 1; 502. Sphere No. 1; 6. Outer sealing strip; 7. Positioning assembly No. 2; 701. Rubber column No. 2; 702. Sphere No. 2; 8. Base; 9. Inner groove; 10. Inner limit plate; 11. Outer limit plate; 12. Outer groove; 13. Inner baffle; 14. Outer baffle; 15. Bracket; 16. Round rod; 17. Disc; 18. Inner mounting groove; 19. Outer mounting groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 and Figure 3A sealing assembly for a roller drill bit includes a drill body 1. The inner wall of the drill body 1 is movably connected with a mounting seat 2. The setting of the mounting seat 2 provides support and a platform for the installation of the drill body 1. The inner wall of the drill body 1 rotates on the outer wall of the mounting seat 2 through a ball 3. The setting of the ball 3 serves to connect the drill body 1 and the mounting seat 2. The inner wall of the drill body 1 is movably connected with an inner sealing strip 4. A No. 1 positioning assembly 5 is evenly distributed on the inner side of the inner sealing strip 4, and the No. 1 positioning assembly 5 is movably connected to the drill body 1 at one end away from the inner sealing strip 4. The installation of the No. 1 positioning assembly 5 serves to secure the inner sealing strip 4. The drill body 1 is connected with the inner wall of the drill body 1 and is movably connected with an outer sealing strip 6 located outside the inner sealing strip 4. The setting of the outer sealing strip 6 and the inner sealing strip 4 plays a double sealing role for the drill body 1 and the mounting seat 2. The inner side of the outer sealing strip 6 is evenly distributed with the No. 2 positioning component 7. The installation of the No. 2 positioning component 7 plays a role in connecting the outer sealing strip 6 and the drill body 1, and the end of the No. 2 positioning component 7 away from the outer sealing strip 6 is movably connected to the drill body 1. The lower end of the mounting seat 2 is provided with a base 8 located below the drill body 1. The installation of the base 8 provides support and platform for the installation of the mounting seat 2.

[0023] The inner wall of the drill body 1 is provided with an inner groove 9, and the inner wall of the inner groove 9 is rollingly connected to the outer wall of the mounting seat 2 through the ball 3. The opening of the inner groove 9 provides space for the rotation of the ball 3. The inner wall of the drill body 1 is fixedly installed with an inner limit plate 10 located on the outside of the inner groove 9, and the inner wall of the inner limit plate 10 is movably connected to the outer wall of the inner sealing strip 4. The inner wall of the inner limit plate 10 is evenly distributed with inner mounting grooves 18 for installing the No. 1 positioning component 5. The inner mounting groove 18 provides space for the installation of the No. 1 positioning component 5. The inner wall of the drill body 1 is fixedly installed with an outer limit plate 11 located on the outside of the inner limit plate 10, and the inner wall of the outer limit plate 11 is movably connected to the outer wall of the outer sealing strip 6. The inner wall of the outer limit plate 11 is evenly provided with outer mounting grooves 19 for installing the No. 2 positioning component 7. The opening of the outer mounting groove 19 provides space for the installation of the No. 2 positioning component 7.

[0024] See also Figure 2 and Figure 5 , brackets 15 are evenly distributed on the upper end surface of the base 8. The setting of the bracket 15 serves to connect the base 8 and the mounting seat 2. A round rod 16 is sleeved on the inner wall of the upper end of the bracket 15, and one end of the round rod 16 is fixedly connected to the outer wall of the mounting seat 2. The installation of the round rod 16 serves to connect the bracket 15 and the mounting seat 2. The other end of the round rod 16 is fixedly installed with a disc 17 located on the outside of the bracket 15.

[0025] An outer groove 12 is provided on the outer wall of the mounting seat 2, and the inner wall of the outer groove 12 is rotatably connected to the outer wall of the ball 3. The opening of the outer groove 12 provides space for the rotation of the ball 3. An inner baffle 13 is fixedly installed on the outer wall of the mounting seat 2, and the inner side of the inner baffle 13 is movably connected to the outer wall of the inner limit plate 10. An outer baffle 14 is fixedly installed on the outer wall of the mounting seat 2, and the inner side of the outer baffle 14 is movably connected to the outer wall of the outer limit plate 11.

[0026] See also Figure 6 and Figure 4 The No. 1 positioning component 5 includes a No. 1 rubber column 501, one end of which is fixedly connected to the outer wall of the inner sealing strip 4. The setting of the No. 1 rubber column 501 serves to connect the No. 1 ball 502 and the inner sealing strip 4. The No. 1 ball 502 is fixedly installed on the end of the No. 1 rubber column 501 away from the inner sealing strip 4, and the outer wall of the No. 1 ball 502 is movably connected to the inner wall of the inner mounting groove 18.

[0027] The No. 2 positioning assembly 7 includes a No. 2 rubber column 701 and a No. 2 sphere 702. One end of the No. 2 rubber column 701 is fixedly connected to the No. 2 sphere 702, and the other end of the No. 2 rubber column 701 is fixedly connected to the outer sealing strip 6. The setting of the No. 2 rubber column 701 serves to connect the No. 2 sphere 702 and the outer sealing strip 6. The outer wall of the No. 2 sphere 702 is movably connected to the inner wall of the outer mounting groove 19.

[0028] Working principle: When in use, first, insert the No. 1 ball 502 into the inner mounting groove 18. At this time, the inner sealing strip 4 is installed inside the inner limit plate 10 by using the connection of the No. 1 rubber column 501. Then, insert the No. 2 ball 702 into the outer mounting groove 19. At this time, the outer sealing strip 6 is installed inside the outer limit plate 11 by using the connection of the No. 2 rubber column 701. In this way, double sealing can be achieved after the drill body 1 and the mounting seat 2 are connected. Finally, the ball 3 rotates inside the inner groove 9 and the outer groove 12, so that the drill body 1 can rotate on the outer wall of the mounting seat 2.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. At the same time, in the drawings of the present utility model, fill patterns are only used to distinguish layers and do not make any other limitations.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing assembly for a roller cone drill bit, comprising a drill bit body (1), characterized in that: The inner wall of the drill bit body (1) is movably sleeved with a mounting seat (2), and the inner wall of the drill bit body (1) rotates on the outer wall of the mounting seat (2) through a ball (3). The inner wall of the drill bit body (1) is movably sleeved with an inner sealing strip (4), and a first positioning component (5) is evenly distributed on the inner side of the inner sealing strip (4), and the end of the first positioning component (5) away from the inner sealing strip (4) is movably connected to the drill bit body (1). The inner wall of the drill bit body (1) is movably sleeved with an outer sealing strip (6) located outside the inner sealing strip (4), and a second positioning component (7) is evenly distributed on the inner side of the outer sealing strip (6), and the end of the second positioning component (7) away from the outer sealing strip (6) is movably connected to the drill bit body (1). The lower end of the mounting seat (2) is provided with a base (8) located below the drill bit body (1).

2. The sealing assembly for a roller drill bit according to claim 1, characterized in that: The inner wall of the drill body (1) is provided with an inner groove (9), and the inner wall of the inner groove (9) is rollingly connected to the outer wall of the mounting seat (2) through a ball (3); the inner wall of the drill body (1) is fixedly provided with an inner limiting plate (10) located outside the inner groove (9), and the inner wall of the inner limiting plate (10) is movably sleeved with the outer wall of the inner sealing strip (4); the inner wall of the inner limiting plate (10) is evenly provided with inner mounting grooves (18) for installing a No. 1 positioning component (5); the inner wall of the drill body (1) is fixedly provided with an outer limiting plate (11) located outside the inner limiting plate (10), and the inner wall of the outer limiting plate (11) is movably sleeved with the outer wall of the outer sealing strip (6); the inner wall of the outer limiting plate (11) is evenly provided with outer mounting grooves (19) for installing a No. 2 positioning component (7).

3. The sealing assembly for a roller cone drill bit according to claim 1, wherein: Brackets (15) are evenly distributed on the upper end surface of the base (8), a round rod (16) is sleeved on the inner wall of the upper end of the bracket (15), and one end of the round rod (16) is fixedly connected to the outer wall of the mounting seat (2), and the other end of the round rod (16) is fixedly mounted with a disc (17) located outside the bracket (15).

4. The sealing assembly for a roller cone drill bit according to claim 2, wherein: An outer groove (12) is formed on the outer wall of the mounting seat (2), and the inner wall of the outer groove (12) is rotatably connected to the outer wall of the ball (3). An inner baffle (13) is fixedly mounted on the outer wall of the mounting seat (2), and the inner side of the inner baffle (13) is movably sleeved with the outer wall of the inner limit plate (10). An outer baffle (14) is fixedly mounted on the outer wall of the mounting seat (2), and the inner side of the outer baffle (14) is movably sleeved with the outer wall of the outer limit plate (11).

5. The sealing assembly for a roller cone drill bit according to claim 2, characterized in that: The No. 1 positioning assembly (5) comprises a No. 1 rubber column (501), one end of the No. 1 rubber column (501) is fixedly connected to the outer wall of the inner sealing strip (4), and the end of the No. 1 rubber column (501) away from the inner sealing strip (4) is fixedly mounted with a No. 1 ball (502), and the outer wall of the No. 1 ball (502) is movably sleeved with the inner wall of the inner mounting groove (18).

6. The sealing assembly for a roller drill bit according to claim 2, wherein: The second positioning assembly (7) comprises a second rubber column (701) and a second sphere (702), one end of the second rubber column (701) is fixedly connected to the second sphere (702), the other end of the second rubber column (701) is fixedly connected to the outer sealing strip (6), and the outer wall of the second sphere (702) is movably sleeved with the inner wall of the outer mounting groove (19).

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