Monometallic sealing roller bit with built-in energy storage ring

Abstract

A monometal sealing roller bit with a built-in energy storage ring comprises a roller cone and a roller palm, a bearing space is formed between an inner hole part of the roller cone and a protruding part at the tail end of the roller palm, and a roller cone sinking groove is further formed in the roller cone. The sealing assembly comprises an upper sealing piece and a lower sealing piece; the top of the upper sealing piece is connected with an energy storage ring; an outer sealing ring is arranged on the outer side wall of the upper sealing piece, and an inner sealing ring is arranged on the inner side wall of the upper sealing piece. And the lower sealing piece is embedded in the cone sinking groove. According to the scheme, the structures of the sealing assemblies are changed, sealing use of the multiple sealing assemblies corresponding to the roller bit structure is achieved, the contact area of the metal sealing face can be increased, the functional ring can be isolated from the outside, and the service life of the functional ring is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of roller drill bits, in particular to a single metal-sealed roller drill bit with a built-in energy storage ring. Background Art

[0002] Most existing roller drill bits use a single metal sealing structure. The single metal sealing structure is as follows: a movable metal sealing ring contacts an immovable metal sleeve embedded in the roller, and the contact surface forms a metal sealing surface; below the movable metal sealing ring, there is a functional ring (such as a rubber ring) that provides support force and is in direct contact with the external working environment; and the rubber ring that performs a sealing function is set inside the metal sealing ring.

[0003] However, this single metal sealing structure has certain defects. The rubber functional part (i.e., the energy storage ring) that provides support is in direct contact with the external rock cutting, causing early failure and ultimately causing the metal seal to lose its function.

[0004] Therefore, how to solve the above-mentioned deficiencies in the prior art has become the subject to be studied and solved in this utility model. Summary of the Invention

[0005] The utility model aims to provide a single metal sealing roller drill bit with a built-in energy storage ring.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a single metal sealed roller drill bit with a built-in energy storage ring includes a roller and a tooth palm, a bearing space is formed between the inner hole part of the roller and the protruding part at the end of the tooth palm, and a roller groove is also provided on the roller; it also includes a sealing assembly, and the sealing assembly includes an upper seal and a lower seal; the top of the upper seal is connected to an energy storage ring; the outer side wall of the upper seal is provided with an outer sealing ring, and the inner side wall of the upper seal is provided with an inner sealing ring; the lower seal is embedded in the roller groove.

[0007] In the above scheme: when the upper sealing member is a chisel-shaped sealing ring, the corresponding lower sealing member is a V-shaped metal sealing sheet; the chisel-shaped sealing ring is located inside the V-shaped metal sealing sheet, and the chisel-shaped sealing ring and the gear groove are gap-matched; the chisel-shaped sealing ring is tightly abutted against the two side walls inside the V-shaped metal sealing sheet, and two symmetrical first sealing surfaces are formed therebetween, and an oil storage space is formed between the two first sealing surfaces and the V-shaped metal sealing sheet.

[0008] In the above scheme: when the upper sealing member is a long-diameter T-shaped sealing ring, the corresponding lower sealing member is a sealing block; the long-diameter T-shaped sealing ring is tightly abutted against the top of the sealing block, and the bottom end of the sealing block is embedded in the inside of the cone groove; the long-diameter T-shaped sealing ring and the cone groove are clearance-matched, and the abutment between the long-diameter T-shaped sealing ring and the sealing block constitutes a second sealing surface.

[0009] In the above scheme: when the upper sealing member is a short-diameter T-shaped sealing ring, the corresponding lower sealing member is a sealing boss; the short-diameter T-shaped sealing ring is tightly abutted against the top of the sealing boss, and the sealing boss is a protruding structure with a ground surface roughness processed on a tooth palm, and the abutment between the short-diameter T-shaped sealing ring and the sealing boss constitutes a third sealing surface.

[0010] According to a further technical solution, the outer sealing ring and the inner sealing ring are both detachably mounted on the upper sealing member and are symmetrically distributed on the inner and outer sides of the upper sealing member. The inner end surface of the outer sealing ring is tightly fitted to the upper sealing member, and the outer end surface of the inner sealing ring is tightly fitted to the upper sealing member.

[0011] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.

[0012] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct or indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0013] The terms “include”, “including”, “have”, etc. used in this document are open-ended terms, meaning including but not limited to.

[0014] Unless otherwise noted, the terms used herein generally have their ordinary meanings in the art, in the context of this application, and in the specific context. Certain terms used to describe this application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this application.

[0015] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0016] The working principle and advantages of this utility model are as follows:

[0017] In this case, by changing the structure of the sealing components, multiple sealing components can be used for sealing on both the inside and outside of the roller drill bit structure. This not only increases the contact area of ​​the metal sealing surface, but also isolates the functional ring (i.e., the energy storage ring) from the outside world, effectively extending the service life of the roller drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 This is a schematic cross-sectional view of a gear wheel comprising a chisel-shaped sealing ring and a V-shaped metal sealing sheet of a double sealing ring according to an embodiment of the present invention;

[0019] Attachment Figure 2 This is a schematic cross-sectional view of the long diameter T-shaped sealing ring and the sealing block of the double sealing ring of the embodiment of the utility model;

[0020] Attachment Figure 3 This is a schematic cross-sectional view of the short-diameter T-shaped sealing ring and the sealing boss of the double sealing ring of the embodiment of the utility model;

[0021] Attachment Figure 4 This is a cross-sectional diagram of a gear wheel with double sealing rings and a chisel-shaped sealing ring and a V-shaped metal sealing sheet set in a sleeve groove according to an embodiment of the present invention;

[0022] Attachment Figure 5 This is a schematic cross-sectional view of a short-diameter T-shaped sealing ring and a sealing boss of a single sealing ring according to an embodiment of the present invention;

[0023] Attachment Figure 6 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Attachment Figure 7 for Figure 2 A partial enlarged view of point B in the middle;

[0025] Attachment Figure 8 for Figure 3 A partial enlarged view of point C in the middle;

[0026] Attachment Figure 9 for Figure 4 A partial enlarged view of the middle D;

[0027] Attachment Figure 10 for Figure 5 A partial enlarged view of point E in the middle;

[0028] Attachment Figure 11 This is a cross-sectional schematic diagram of a sealing assembly comprising a chisel-shaped sealing ring and a V-shaped metal sealing sheet of a double sealing ring according to an embodiment of the present invention;

[0029] Attachment Figure 12 This is a cross-sectional schematic diagram of a sealing assembly comprising a long-diameter T-shaped sealing ring and a sealing block of a double sealing ring according to an embodiment of the present invention;

[0030] Attachment Figure 13 This is a cross-sectional schematic diagram of a sealing assembly comprising a short-diameter T-shaped sealing ring and a sealing boss of a double sealing ring according to an embodiment of the present invention;

[0031] Attachment Figure 14 It is a cross-sectional schematic diagram of a sealing assembly comprising a short-diameter T-shaped sealing ring and a sealing boss of a single sealing ring according to an embodiment of the present invention.

[0032] In the accompanying figures: 1. Cone; 2. Cone base; 3. Bearing space; 4. Sleeve slot; 5. Cone countersunk groove; 6. Seal assembly; 7. Accumulator ring; 8. Outer seal ring; 9. Inner seal ring; a. Chisel seal ring; b. V-shaped metal seal; 10. First sealing surface; 11. Oil reservoir; c. Long-diameter T-shaped seal ring; d. Sealing block; 12. Second sealing surface; e. Short-diameter T-shaped seal ring; f. Sealing boss; 13. Third sealing surface. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0034] Embodiment: The present invention will be clearly illustrated below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0035] The terms used herein are for describing specific embodiments only and are not intended to be limiting of the present invention. Singular forms such as "a," "the," "this," "this," and "the" as used herein also include plural forms.

[0036] A single metal-sealed roller drill bit with a built-in energy storage ring in this embodiment includes a roller 1 and a tooth palm 2. A bearing space 3 is formed between the inner hole portion of the roller 1 and the protruding portion at the end of the tooth palm 2. A roller groove 5 is also provided on the roller 1.

[0037] It also includes a sealing assembly 6, which includes an upper sealing member and a lower sealing member, and the upper sealing member and the lower sealing member are abutted and fixed with each other.

[0038] The top of the upper sealing member is connected to an energy storage ring 7, the outer side wall of the upper sealing member is provided with an outer sealing ring 8, and the inner side wall of the upper sealing member is provided with an inner sealing ring 9.

[0039] The outer and inner sealing rings 8 and 9 are both removably mounted on the upper seal and are symmetrically located on the inner and outer sides of the upper seal. The inner end face of the outer sealing ring 8 fits tightly against the upper seal, while the outer end face of the inner sealing ring 9 fits tightly against the upper seal. The outer and inner sealing rings 8 and 9 provide sealing and some downward support, while also isolating the energy storage ring 7 located on top from the outside world to prevent wear and failure.

[0040] The lower seal is embedded in the cone groove 5.

[0041] During operation, the gear 1 rotates, and the inner hole of the gear 1 or the inner hole of the metal sleeve embedded inside it drives the energy storage ring 7 and the movable upper seal to move together through the action of friction. The upper seal contacts the upper seal fixed on the tooth palm 2 to form a corresponding metal sealing surface. During operation, due to the support force provided by the energy storage ring 7, they are tightly attached to each other, forming a dynamic sealing structure. The outer sealing ring 8 and / or inner sealing ring 9 provided on the upper seal move together with the upper seal and the gear 1, and the positions of the two are relatively static, thereby forming a static sealing structure. This increases the contact area of ​​the corresponding metal sealing surface, and completely isolates the energy storage ring 7 from the outside world, effectively extending its service life. Specific embodiments

[0042] See attached Figure 1 、 Figure 6 and Figure 11 As shown, when the upper sealing member is a chisel-shaped sealing ring a, the corresponding lower sealing member is a V-shaped metal sealing sheet b. The chisel-shaped sealing ring a is located inside the V-shaped metal sealing sheet b, and the chisel-shaped sealing ring a is in clearance fit with the cone groove 5.

[0043] The top of the chisel-shaped sealing ring a is connected to an energy storage ring 7, the outer side wall of the chisel-shaped sealing ring a is provided with an outer sealing ring 8, and the inner side wall of the chisel-shaped sealing ring a is provided with an inner sealing ring 9.

[0044] The chisel-shaped sealing ring a tightly abuts the inner side walls of the V-shaped metal sealing piece b, forming two symmetrical first sealing surfaces 10. An oil reservoir 11 is defined between the first sealing surfaces 10 and the V-shaped metal sealing piece b. After assembly, this provides continuous lubrication for the first sealing surfaces 10 during operation and regulates internal and external pressures. Specific embodiments

[0045] See attached Figure 2 、 Figure 7 and Figure 12As shown, when the upper seal is a long-diameter T-shaped sealing ring c, the corresponding lower seal is a sealing block d. The long-diameter T-shaped sealing ring c tightly abuts the top of the sealing block d, and the bottom of the sealing block d is embedded in the cone groove 5. The long-diameter T-shaped sealing ring c and the cone groove 5 have a clearance fit.

[0046] The top of the long-diameter T-shaped sealing ring c is connected to an energy storage ring 7, the outer sidewall of the long-diameter T-shaped sealing ring c is provided with an outer sealing ring 8, and the inner sidewall of the long-diameter T-shaped sealing ring c is provided with an inner sealing ring 9. The contact between the long-diameter T-shaped sealing ring c and the sealing block d forms a second sealing surface 12, so as to cooperate with the roller drill bit seal. Specific embodiments

[0047] See attached Figure 3 、 Figure 8 and Figure 13 As shown, when the upper sealing member is a short-diameter T-shaped sealing ring e, the corresponding lower sealing member is a sealing boss f.

[0048] The top of the short-diameter T-shaped sealing ring e is connected to an energy storage ring 7, the outer side wall of the short-diameter T-shaped sealing ring e is provided with an outer sealing ring 8, and the inner side wall of the short-diameter T-shaped sealing ring e is provided with an inner sealing ring 9.

[0049] The short diameter T-shaped sealing ring e is tightly abutted against the top of the sealing boss f, which is a protruding structure with a ground surface roughness processed on the tooth palm 2. The abutment between the short diameter T-shaped sealing ring e and the sealing boss f forms a third sealing surface 13. Specific embodiments

[0050] See attached Figure 4 and Figure 9 As shown, when the upper sealing member is a chisel-shaped sealing ring a, the corresponding lower sealing member is a V-shaped metal sealing sheet b. The chisel-shaped sealing ring a is located inside the V-shaped metal sealing sheet b, and the chisel-shaped sealing ring a is loosely fitted with a sleeve groove 4.

[0051] See attached Figure 1 and Figure 6 As shown, the top of the chisel-shaped sealing ring a is connected to an energy storage ring 7, which isolates the energy storage ring 7 from the outside world and effectively extends its service life. The outer wall of the chisel-shaped sealing ring a is provided with an outer sealing ring 8, and the inner wall of the chisel-shaped sealing ring a is provided with an inner sealing ring 9.

[0052] The chisel-shaped sealing ring a is in close contact with both side walls of the V-shaped metal sealing piece b, forming two symmetrical first sealing surfaces 10. An oil storage space 11 is formed between the two first sealing surfaces 10 and the V-shaped metal sealing piece b. Specific embodiments

[0053] See attached Figure 5 、 Figure 10 and Figure 14 As shown, when the upper seal is a short-diameter T-shaped sealing ring e, the corresponding lower seal is a sealing boss f. The short-diameter T-shaped sealing ring e is tightly abutted against the top of the sealing boss f, which is a protruding structure with a ground surface roughness processed on the tooth palm 2.

[0054] The top of the short-diameter T-shaped sealing ring e is connected to an energy storage ring 7, and the outer side wall of the short-diameter T-shaped sealing ring e is provided with an outer sealing ring 8.

[0055] The contact point between the short-diameter T-shaped sealing ring e and the sealing boss f forms a third sealing surface 13 to form a sealing structure.

[0056] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A single metal seal roller drill bit with a built-in energy storage ring, characterized by: It comprises a gear (1) and a tooth palm (2), wherein a bearing space (3) is formed between the inner hole portion of the gear (1) and the protruding portion at the end of the tooth palm (2), and a gear sink groove (5) is also provided on the gear (1); Also included is a sealing assembly (6), the sealing assembly comprising an upper sealing member and a lower sealing member; The top of the upper sealing member is connected to an energy storage ring (7); An outer sealing ring (8) is provided on the outer side wall of the upper sealing member, and an inner sealing ring (9) is provided on the inner side wall of the upper sealing member; The lower seal is embedded in the cone groove (5).

2. The single metal seal roller drill bit with built-in energy storage ring according to claim 1, characterized in that: When the upper sealing member is a chisel-shaped sealing ring (a), the corresponding lower sealing member is a V-shaped metal sealing sheet (b); The chisel-shaped sealing ring (a) is located inside the V-shaped metal sealing sheet (b), and the chisel-shaped sealing ring (a) is clearance-matched with the cone groove (5); The chisel-shaped sealing ring (a) is in close contact with both side walls inside the V-shaped metal sealing sheet (b), and two first sealing surfaces (10) with a symmetrical structure are formed therebetween.

3. The single metal seal roller drill bit with built-in energy storage ring according to claim 2, characterized in that: An oil storage space (11) is formed between the two first sealing surfaces (10) and the V-shaped metal sealing sheet (b).

4. The single metal seal roller drill bit with a built-in energy storage ring according to claim 1, characterized in that: When the upper sealing member is a long-diameter T-shaped sealing ring (c), the corresponding lower sealing member is a sealing block (d); The long-diameter T-shaped sealing ring (c) is tightly abutted against the top end of the sealing block (d), and the bottom end of the sealing block (d) is embedded in the cone groove (5); The long-diameter T-shaped sealing ring (c) is clearance-matched with the cone groove (5).

5. The single metal seal roller drill bit with built-in energy storage ring according to claim 4, characterized in that: The abutment between the long-diameter T-shaped sealing ring (c) and the sealing block (d) forms a second sealing surface (12).

6. The single metal seal roller drill bit with a built-in energy storage ring according to claim 1, characterized in that: When the upper sealing member is a short-diameter T-shaped sealing ring (e), the corresponding lower sealing member is a sealing boss (f); The short-diameter T-shaped sealing ring (e) is tightly abutted against the top of the sealing boss (f), and the sealing boss (f) is a protruding structure with a ground surface roughness processed on a tooth palm (2).

7. The single metal seal roller drill bit with built-in energy storage ring according to claim 6, characterized in that: The abutment between the short-diameter T-shaped sealing ring (e) and the sealing boss (f) forms a third sealing surface (13).

8. The single metal seal roller drill bit with a built-in energy storage ring according to claim 1, characterized in that: The outer sealing ring (8) and the inner sealing ring (9) are both detachably mounted on the upper sealing member and are symmetrically distributed on the inner and outer sides of the upper sealing member. The inner end surface of the outer sealing ring (8) is tightly fitted to the upper sealing member, and the outer end surface of the inner sealing ring (9) is tightly fitted to the upper sealing member.

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