Self-lubricating flange

Abstract

The utility model discloses a self-lubricating flange which comprises a first flange plate, a second flange plate, a first O-shaped ring and a second O-shaped ring, and annular grooves are formed in the inner side faces of the first flange plate and the second flange plate. A first clamping groove and a second clamping groove are formed in the positions, located on the inner side and the outer side of the annular groove, of the first flange plate and the second flange plate correspondingly, an oil discharging hole and an oil inlet hole are perpendicularly formed in the bottom and the top of the outer side face of the first flange plate and the bottom and the top of the outer side face of the second flange plate correspondingly, and plugs are assembled at the outer ends of the oil discharging hole and the oil inlet hole in a threaded mode; the utility model relates to the technical field of flange plates. According to the self-lubricating flange, the annular grooves are formed in the inner side faces of the first flange plate and the second flange plate, the first flange plate and the second flange plate can be spliced to form the annular cavity for storing lubricating oil, and the oil inlet hole and the oil discharge hole are formed to control injection and discharge of the lubricating oil, so that the lubricating oil can continuously exist in the flange plates; by means of the lining, stable and lasting lubrication protection can be provided for the bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange disc technical field especially a self -lubricating flange. BACKGROUND

[0002] In many fields such as industrial pipeline connection, flange disc is widely used as the key connecting component, and the traditional flange disc is prone to be affected by various factors due to complex working environment during long-term use, on the one hand, friction between the bolt and the flange disc will occur during frequent installation, disassembly and daily operation, on the other hand, some working environments contain corrosive medium, and these factors jointly cause the bolt to be stuck or leak, in order to ensure normal use of the flange disc, it needs to be regularly disassembled and maintained.

[0003] In the process of realizing the present application, the inventor found that there are at least the following problems in the prior art:

[0004] In the prior art, the external smearing grease method is mainly used for lubricating the bolt, however, this lubrication method has obvious defects, the externally smeared grease is prone to be lost, and cannot continuously provide effective lubrication protection for the bolt, at the same time, the grease may contaminate the medium conveyed in the pipeline during the loss process, and cause adverse effects on the quality of the medium and subsequent use.

[0005] Therefore, the above technical problems need to be solved. CONTENT OF THE UTILITY MODEL

[0006] In order to overcome the defects of the prior art, the utility model provides a self-lubricating flange, which solves the problems in the background art.

[0007] In order to solve the above technical problems, the basic technical scheme of the utility model is as follows:

[0008] A self-lubricating flange, comprising a first flange disc and a second flange disc arranged symmetrically, and a first O-shaped ring and a second O-shaped ring arranged concentrically inside and outside and interposed therebetween, wherein the inner side surfaces of the first flange disc and the second flange disc are provided with annular grooves, and the two annular grooves can be combined to form an annular cavity for storing lubricating oil, the inner side and the outer side of the first flange disc and the second flange disc are provided with first clamping grooves and second clamping grooves for accommodating the first O-shaped ring and the second O-shaped ring respectively, the bottom and the top of the outer side surface of the first flange disc and the second flange disc are provided with oil discharge holes and oil inlet holes respectively, and the outer ends of the oil discharge holes and the oil inlet holes are threadedly connected with plugs,

[0009] Further comprising a plurality of inner liners vertically embedded between the first flange disc and the second flange disc and adapted for the bolts to pass through, and the plurality of inner liners are arranged in an annular array.

[0010] Preferably, the second flange plate inner side is provided with a surrounding structure on the outside of the first clamping groove and the inside of the second clamping groove. The surrounding structure plays a role in further sealing and positioning, preventing the first O-ring and the second O-ring from moving during installation and use, and ensuring stable and reliable sealing effect.

[0011] Preferably, the inner liner includes a stainless steel sleeve and two rubber bushings coaxially clamped at both ends of the stainless steel sleeve, and an oil supplement hole is formed in the outer wall of the middle part of the stainless steel sleeve and connected with the annular cavity. The stainless steel sleeve serves as the main part of the inner liner and has high strength and corrosion resistance. The oil supplement hole formed in the middle part of the outer wall is connected with the annular cavity, so that the lubricating oil in the annular cavity can enter the inner liner to lubricate the bolts. The two rubber bushings are coaxially clamped at both ends of the stainless steel sleeve. The rubber material has good elasticity and sealing performance, which can further enhance the sealing performance between the inner liner and the bolts, prevent the lubricating oil from leaking, and reduce the vibration and impact between the bolts and the inner liner to protect the bolts and the flange plate.

[0012] Preferably, a plurality of oil guide grooves are formed in the inner wall of the stainless steel sleeve and distributed along the axial direction. The plurality of oil guide grooves are arranged in a ring array. The oil guide grooves can guide the lubricating oil to be evenly distributed at the contact position between the bolts and the inner liner, improving the lubrication effect.

[0013] The beneficial effects of the utility model are as follows:

[0014] The technical scheme of the utility model discloses that the annular grooves are formed in the inner sides of the first flange plate and the second flange plate, the two can be spliced to form an annular cavity for storing lubricating oil, and the oil inlet hole and the oil outlet hole are arranged to control the injection and discharge of the lubricating oil, so that the lubricating oil can exist in the flange plate for a long time. The inner liner can provide stable and long-lasting lubrication protection for the bolts, avoiding the problems of easy loss of external greasing, inability to continuously lubricate and possible contamination of the medium in the pipeline. At the same time, the problems of jamming or leakage of the bolts caused by factors such as friction and corrosion are effectively reduced, the maintenance frequency of the flange plate is reduced, and the normal use of the flange plate is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a split structure schematic view of the utility model;

[0017] Figure 3 It is a cross-sectional structure schematic view of the utility model;

[0018] Figure 4 It is a split structure schematic view of the utility model;

[0019] Figure 5 It is the structure schematic view of oil inlet hole of the utility model;

[0020] Figure 6 It is the structure schematic view of inner lining of the utility model;

[0021] Figure 7 It is the internal structure schematic view of stainless steel sleeve of the utility model;

[0022] Mark explanation:

[0023] 100, first flange plate;

[0024] 110, oil discharge hole;

[0025] 200, second flange plate;

[0026] 210, oil inlet hole; 220, enclosure structure;

[0027] 300, first O-ring;

[0028] 400, second O-ring;

[0029] 500, annular groove;

[0030] 600, first clamping groove;

[0031] 700, second clamping groove;

[0032] 800, inner lining;

[0033] 810, stainless steel sleeve; 820, rubber bushing; 830, oil supplement hole; 840, oil guide groove;

[0034] 900, plug. Specific implementation

[0035] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] Please refer to Figures 1-7The utility model provides a kind of technical scheme: a self-lubricating flange, including first flange plate 100 and second flange plate 200 being symmetrically arranged, and first O-ring 300 and second O-ring 400 being arranged between the two and being inner, outer concentric distribution, annular groove 500 is all set on the inner side of first flange plate 100 and second flange plate 200, and two annular grooves 500 can be spliced to form the annular cavity for lubricating oil storage, first flange plate 100 and second flange plate 200 are located the inner side and the outside of annular groove 500 are equipped with first clamping groove 600 and second clamping groove 700 respectively, first flange plate 100 and second flange plate 200 outside surface bottom and top are vertically equipped with oil drain hole 110 and oil inlet hole 210, the outer end of oil drain hole 110 and oil inlet hole 210 is all screw-threaded with plug 900, further include several vertical inlaying between first flange plate 100 and second flange plate 200 and can be bolted through inner liner 800, several inner liners 800 are annular array distribution.

[0037] Based on the structure of the above setting, the self-lubricating flange is composed of a first flange plate 100, a second flange plate 200, a first O-ring 300, a second O-ring 400 and a plurality of inner liners 800. The first flange plate 100 and the second flange plate 200 are symmetrical and connected by bolts to realize reliable communication of the pipeline. The annular grooves 500 on the inner sides of the two flange plates form an annular cavity for storing lubricating oil. The inner liners 800 provide lubrication conditions for the bolts. The oil discharge hole 110 and the oil inlet hole 210 are arranged on the bottom and top of the outer side respectively to control the injection and discharge of lubricating oil. The plugs 900 threaded on the outer ends of the oil discharge hole 110 and the oil inlet hole 210 can prevent the leakage of lubricating oil. The first O-ring 300 and the second O-ring 400 are concentrically distributed inside and outside and are arranged between the first flange plate 100 and the second flange plate 200. They are adapted to be accommodated in the first clamping groove 600 and the second clamping groove 700 respectively and play a sealing role to prevent the leakage of lubricating oil in the annular cavity into the pipeline, avoid pollution of the medium in the pipeline and ensure the quality of the medium and subsequent use. The inner liners 800 are vertically embedded between the first flange plate 100 and the second flange plate 200 and are arranged in an annular array to provide installation positions for the bolts and prevent the leakage of lubricating oil. Specifically, the self-lubricating flange forms an annular cavity for storing lubricating oil by opening annular grooves 500 on the inner sides of the first flange plate 100 and the second flange plate 200. Before use, the plugs 900 of the oil inlet hole 210 are opened, lubricating oil is injected into the annular cavity, and then the plugs 900 are tightened. When the bolts are installed in the inner liners 800 and tightened, relative movement or friction may exist between the bolts and the inner liners 800 and between the inner liners 800 and the flange plates. At this time, the lubricating oil in the annular cavity can continuously lubricate the contact position of the bolts and the inner liners 800 through the inner liners 800, reducing friction and wear. At the same time, the first O-ring 300 and the second O-ring 400 play a sealing role to prevent the leakage of lubricating oil into the pipeline and pollute the medium. When it is necessary to replace the lubricating oil, the plugs 900 of the oil discharge hole 110 are opened, the old lubricating oil is discharged, and then new lubricating oil is injected through the oil inlet hole 210. The self-lubricating flange forms an annular cavity for storing lubricating oil by opening annular grooves 500 on the inner sides of the first flange plate 100 and the second flange plate 200. The oil inlet hole 210 and the oil discharge hole 110 are arranged to control the injection and discharge of lubricating oil, so that the lubricating oil can exist continuously in the flange plate. With the help of the inner liners 800, the bolts can be provided with stable and lasting lubrication protection, avoiding the problems of easy loss of external greasing, inability to continuously lubricate and possible pollution of the medium in the pipeline. At the same time, it effectively reduces the problems of jamming or leakage of the bolts caused by friction, corrosion and other factors, reduces the maintenance frequency of the flange plate and ensures the normal use of the flange plate.

[0038] Further, the second flange plate 200 is provided with a surrounding structure 220 on the inner side of the second flange plate 200 and located at the outer side of the first clamping slot 600 and the inner side of the second clamping slot 700.

[0039] Further, the inner lining 800 comprises a stainless steel sleeve 810 and two rubber bushings 820 coaxially clamped on both ends of the stainless steel sleeve 810, and the outer wall of the middle part of the stainless steel sleeve 810 is provided with an oil supplement hole 830 connected with the annular cavity.

[0040] Further, the inner wall of the stainless steel sleeve 810 is provided with a plurality of oil guide grooves 840 distributed along the axial direction, and the plurality of oil guide grooves 840 are arranged in a ring array.

[0041] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A self-lubricating flange, characterized by: The application relates to a flange plate structure, which comprises a first flange plate (100) and a second flange plate (200) arranged symmetrically, and a first O-shaped ring (300) and a second O-shaped ring (400) arranged concentrically inside and outside the first flange plate (100) and the second flange plate (200); annular grooves (500) are formed on the inner sides of the first flange plate (100) and the second flange plate (200), and the two annular grooves (500) can be combined to form an annular cavity for storing lubricating oil; the first flange plate (100) and the second flange plate (200) are provided with a first clamping groove (600) and a second clamping groove (700) on the inner side and the outer side of the annular groove (500) respectively, so that the first O-shaped ring (300) and the second O-shaped ring (400) can be accommodated and matched; the bottom and the top of the outer side of the first flange plate (100) and the second flange plate (200) are vertically provided with an oil discharge hole (110) and an oil inlet hole (210) respectively, and the outer ends of the oil discharge hole (110) and the oil inlet hole (210) are threadedly provided with plugs (900). The application further comprises a plurality of inner liners (800) vertically embedded between the first flange plate (100) and the second flange plate (200) and adapted to be penetrated by bolts.

2. A self-lubricating flange according to claim 1, characterized in that: The inner side of the second flange plate (200) is provided with a surrounding structure (220) outside the first clamping groove (600) and inside the second clamping groove (700).

3. A self-lubricating flange according to claim 1, wherein: The inner liner (800) comprises a stainless steel sleeve (810) and two rubber bushings (820) coaxially clamped on the two ends of the stainless steel sleeve (810); an oil supplement hole (830) is formed in the outer wall of the middle part of the stainless steel sleeve (810) and is connected with the annular cavity.

4. A self-lubricating flange according to claim 3, wherein: A plurality of oil guide grooves (840) are formed in the inner wall of the stainless steel sleeve (810) and are arranged in the axial direction; the oil guide grooves (840) are arranged in an annular array.

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