Gas environment isolation bearing and gas storage device

Abstract

The utility model discloses a gas environment isolation bearing and a gas storage device. The gas environment isolation bearing comprises an outer ring, an inner ring, a rolling body and at least two sealing pieces, the outer ring comprises an inner ring space; the inner ring is arranged in the inner ring space of the outer ring; the rolling body is arranged between the inner ring and the outer ring and can support the outer ring and the inner ring to rotate relatively; the two sealing pieces are arranged between the inner ring and the outer ring and located on the same side of the rolling body. An isolation bin is arranged between the two sealing pieces, and sealing grease is arranged in the isolation bin and used for sealing gaps between the edges of the sealing pieces and the inner ring. The isolation bin is arranged on any side of the rolling body, the sealing grease is arranged in the isolation bin, and the isolation bin and the sealing grease are used for preventing gas from flowing in the bearing, so that the gas cannot pass through the bearing to realize gas isolation or sealing, and the use of the bearing for normally supporting a mechanical rotating body is not influenced.

Description

Technical Field

[0001] The utility model generally relates to the technical field of bearings, and more specifically to a gas environment isolation bearing and a gas storage device. Background Art

[0002] In the prior art, bearings are widely used in modern industry. The main function of bearings is to support mechanical rotating bodies. Bearings have many advantages during operation, such as low friction coefficient, high transmission accuracy, and long service life. However, in some special working environments, ordinary bearings cannot meet the technical requirements. For example, in a working environment that requires gas isolation, the bearing is at the isolation boundary. It is difficult for ordinary bearings to be sealed, and it is impossible to isolate the gas at the isolation boundary.

[0003] Therefore, it is necessary to provide a gas environment isolation bearing and a gas storage device to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the utility model provides a gas environment isolation bearing, comprising:

[0006] An outer ring, the outer ring including an inner ring space;

[0007] An inner ring, the inner ring being arranged in the inner ring space of the outer ring;

[0008] A rolling body, wherein the rolling body is disposed between the inner ring and the outer ring and can support the outer ring and the inner ring to rotate relative to each other;

[0009] At least two seals, the two seals are arranged between the inner ring and the outer ring and are located on the same side of the rolling element;

[0010] An isolation chamber is arranged between the two sealing members, and sealing grease is arranged in the isolation chamber for sealing the gap between the edge of the sealing member and the inner ring.

[0011] Optionally, the sealing element comprises:

[0012] An outer ring, the outer edge of which is sealingly connected to the inner wall of the outer ring;

[0013] An airbag ring, the airbag ring is sealed and connected to the outer ring, and the airbag ring can be elastically deformed;

[0014] A coating ring is connected to the airbag ring, and the inner edge of the coating ring is transitionally matched or gap-matched with the outer wall of the inner ring.

[0015] Optionally, an air cavity is provided inside the airbag ring, and the air cavity is filled with gas so that the airbag ring can be elastically deformed.

[0016] Optionally, the coating ring is a coating provided on the inner edge of the airbag ring.

[0017] Optionally, the inner wall of the outer ring is provided with:

[0018] A first card slot, the first card slot is annular, and an outer edge of the sealing member is disposed in the first card slot;

[0019] A second groove, the second groove is annular, and the outer edge of another sealing member is arranged in the second groove;

[0020] The first clamping groove and the second clamping groove are located on the same side of the rolling body.

[0021] Optionally, the outer wall of the inner ring is provided with:

[0022] A first mating surface, an inner edge of the seal matches with the first mating surface, and a width of the first mating surface is greater than the sum of the thickness of the seal and the thickness of the isolation chamber.

[0023] Optionally, the gas environment isolation bearing further comprises:

[0024] An oil separator block is arranged in the isolation chamber, the oil separator block is fixedly connected to the outer ring, and the oil separator block can push the sealing grease toward the inner ring so that the sealing grease seals the gap between the edge of the seal and the inner ring.

[0025] Optionally, the oil separation block is fan-shaped, and the thickness of the oil separation block is smaller than the thickness of the isolation chamber.

[0026] Optionally, the thickness of the oil separator block gradually decreases from the outer edge to the inner edge of the oil separator block.

[0027] Optionally, both side edges of the oil separation block are pointed, and both side edges of the oil separation block can squeeze and separate the sealing grease.

[0028] Optionally, between the inner ring and the outer ring there is provided:

[0029] a first seal;

[0030] A second sealing member, wherein the second sealing member is closer to the rolling element than the first sealing member, and the isolation chamber is arranged between the first sealing member and the second sealing member.

[0031] Optionally, the gas environment isolation bearing further comprises

[0032] A third sealing member is arranged on the other side of the rolling element and is used to seal the gap between the inner ring and the outer ring to prevent the leakage of lubricating oil.

[0033] Optionally, the outer wall of the inner ring is provided with:

[0034] A second mating surface, an inner edge of the third sealing component is mated with the second mating surface, and a width of the second mating surface is greater than a thickness of the third sealing component.

[0035] Optionally, the inner wall of the outer ring is provided with:

[0036] The third clamping groove is annular in shape, and the outer edge of the third sealing member is arranged in the third clamping groove.

[0037] Optionally, between the inner ring and the outer ring there is provided:

[0038] Four or more seals, wherein the seals are arranged between the inner ring and the outer ring, at least two of the seals are located on one side of the rolling element, and at least another two of the seals are located on the other side of the rolling element;

[0039] An isolation chamber is arranged between the two sealing members located on the same side of the rolling element. Sealing grease is arranged in the isolation chamber to seal the gap between the edge of the sealing member and the inner ring.

[0040] Optionally, the rolling element comprises:

[0041] Ball or needle rollers;

[0042] A cage holds the balls or needles between the inner ring and the outer ring.

[0043] A second aspect of the utility model provides a gas storage device, comprising a gas environment isolation bearing according to any one of the above technical solutions.

[0044] According to a gas environment isolation bearing and a gas storage device of the utility model, an isolation chamber is arranged on either side of the rolling element of the bearing, and sealing grease is arranged in the isolation chamber. The isolation chamber and the sealing grease are used to prevent the gas from circulating inside the bearing, so that the gas cannot pass through the bearing to achieve gas isolation or sealing, and the normal use of the bearing to support the mechanical rotating body is not affected, thereby meeting the use requirements of the working environment that requires gas isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0046] Figure 1 A three-dimensional gas environment isolation bearing according to a preferred embodiment of the utility model;

[0047] Figure 2 It is a three-dimensional diagram of a gas environment isolation bearing according to a preferred embodiment of the utility model;

[0048] Figure 3 This is an exploded view of a gas environment isolation bearing according to a preferred embodiment of the utility model;

[0049] Figure 4 is a cross-sectional view of a gas environment isolation bearing according to a preferred embodiment of the utility model;

[0050] Figure 5 is a cross-sectional view of a first sealing member according to a preferred embodiment of the present utility model;

[0051] Figure 6 It is a front view of a first sealing member according to a preferred embodiment of the utility model;

[0052] Figure 7 is an exploded view of a first sealing member according to a preferred embodiment of the present utility model;

[0053] Figure 8 It is a front view of a gas environment isolation bearing according to a preferred embodiment of the utility model;

[0054] Fig. 9 for Figure 8 Cross-sectional view along CC;

[0055] Fig.10 for Figure 8 Sectional view along DD;

[0056] Fig.11 is a cross-sectional view of a gas environment isolation bearing according to a preferred embodiment of the utility model;

[0057] Fig.12a It is a left view of an oil separator block according to a preferred embodiment of the utility model;

[0058] Figure 12b It is a front view of an oil separation block according to a preferred embodiment of the utility model;

[0059] Fig.12c It is a stereoscopic diagram of an oil separation block according to a preferred embodiment of the utility model.

[0060] Description of reference numerals:

[0061] 1: Outer ring 2: Inner ring

[0062] 3: First seal 4: Second seal

[0063] 5: Third seal 6: Cage

[0064] 7: Rolling element 8: First slot

[0065] 9: Second card slot 10: Third card slot

[0066] 11: Oil separator 12: First mating surface

[0067] 13: Second mating surface 14: First rolling element groove

[0068] 15: Second rolling element groove 16: Ball

[0069] 17: Isolation chamber 18: First surface

[0070] 19: First inner edge 20: First outer edge

[0071] 21: Second inner edge 22: Second outer edge

[0072] 23: Third inner side 24: Third outer side

[0073] 25: First side 26: Second side

[0074] 27: Second surface 28: Chamfer

[0075] 29: First gap 30: Second gap

[0076] 31: Outer ring 32: Airbag ring

[0077] 33: Coated ring DETAILED DESCRIPTION

[0078] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0079] In order to thoroughly understand the utility model, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the utility model are described in detail below, but in addition to these detailed descriptions, the utility model may also have other embodiments.

[0080] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0081] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in the present invention are for illustrative purposes only and are not restrictive.

[0082] The utility model discloses a gas environment isolation bearing and a gas storage device.

[0083] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0084] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a preferred embodiment, a gas environment isolation bearing comprises: an outer ring 1, an inner ring 2, a rolling element 7 and at least two sealing elements;

[0085] The outer ring 1 includes an inner ring space;

[0086] The inner ring 2 is arranged in the inner ring space of the outer ring 1;

[0087] The rolling element 7 is arranged between the inner ring 2 and the outer ring 1, and can support the outer ring 1 and the inner ring 2 to rotate relative to each other;

[0088] At least two seals, the two seals are arranged between the inner ring 2 and the outer ring 1, and are located on the same side of the rolling element 7; the two seals are a first seal 3 and a second seal 4 in the figure, and the second seal 4 is closer to the rolling element 7 than the first seal 3;

[0089] An isolation chamber 17 is provided between the two seals. Sealing grease is provided in the isolation chamber 17 for sealing the gap between the edge of the first seal 3 and the inner ring 2 , and the gap between the edge of the second seal 4 and the inner ring 2 .

[0090] The gas environment isolation bearing is usually arranged in a bearing seat, the shaft passes through the inner ring 2, the outer ring 1 is relatively fixed to the bearing seat, and the inner ring 2 is relatively fixed to the shaft, so as to support the rotation of the shaft.

[0091] The gas environment isolation bearing in this embodiment is achieved by setting an isolation chamber on either side of the rolling element of the bearing, and sealing grease in the isolation chamber. The isolation chamber and the sealing grease are used to prevent the gas from circulating inside the bearing, so that the gas cannot pass through the bearing to achieve gas isolation or sealing, and does not affect the normal use of the bearing to support the mechanical rotating body, thereby meeting the use requirements of the working environment that requires gas isolation.

[0092] The first seal 3 and the second seal 4 have the same structure, but are arranged at different positions in the gas environment isolation bearing. The first seal 3 is taken as an example for detailed description below, and the structure of the second seal 4 can refer to the first seal 3.

[0093] In one embodiment, if Figure 5 , Figure 6 , Figure 7 As shown, the first sealing member 3 comprises:

[0094] An outer ring 31, the outer edge of the outer ring 31 is sealed and connected to the inner wall of the outer ring 1;

[0095] An airbag ring 32, the airbag ring 32 is sealed and connected to the outer ring 31, and the airbag ring 32 can be elastically deformed;

[0096] The plated ring 33 is connected to the airbag ring 32 , and the inner edge of the plated ring 33 is transitionally fitted or clearance-fitted with the outer wall of the inner ring 2 .

[0097] The outer ring 31, the airbag ring 32, and the coating ring 33 are concentrically assembled from the outside to the inside. The outer ring 31 is used for skeleton support. Due to its elastic characteristics, the coating ring 33 will not get stuck or easily detach when it contacts the first mating surface 12 of the inner ring 2. When the coating ring 33 contacts the first mating surface 12 of the inner ring 2, the first seal 3 and the first mating surface 12 of the inner ring 2 are in contact with each other. A little pressure can be applied on the first mating surface 12 without a gap, so that the coating ring 33 is fully in contact with the first mating surface 12 and also has space for contraction or expansion.

[0098] The inner edge of the coating ring 33 and the outer wall of the inner ring 2 are transitionally matched or clearance-matched, that is, contact installation or non-contact installation can be adopted to ensure that the sealing grease does not leak.

[0099] The material of the outer ring 31 can be selected from hard rubber, plastic or metal, and the material of the airbag ring 32 can be selected from tough non-hard rubber or plastic. The inside of the airbag ring 32 is hollow and needs to be inflated to form the airbag ring 32, so that the airbag ring 32 has excellent elasticity and toughness. The material of the coating ring 33 can be selected from metal materials with good wear resistance and low friction coefficient, graphite materials, etc.

[0100] In one embodiment, an air cavity is provided inside the airbag ring 32 , and the air cavity is filled with gas, so that the airbag ring 32 can be elastically deformed.

[0101] In one embodiment, the coating ring 33 is a coating provided on the inner edge of the airbag ring 32 .

[0102] The characteristics of the plated ring 33 are good wear resistance, small friction coefficient, thin coating and being plated on an elastic rubber surface, so the plated ring 33 has a certain flexibility and tension. The plated ring 33 is used to directly contact the first mating surface 12, so the friction between the first seal 3 and the first mating surface 12 of the inner ring 2 will be very small and negligible, which not only ensures the sealing performance of the first seal 3 and the outer surface of the inner ring 2 but also reduces the friction coefficient between the two.

[0103] In one embodiment, if Figure 3 , Figure 4 As shown, the inner wall of the outer ring 1 is provided with:

[0104] A first card groove 8, the first card groove 8 is annular, and the first outer edge 20 of the first sealing member 3 is disposed in the first card groove 8;

[0105] A second clamping groove 9, which is annular in shape, and a second outer edge 22 of the second sealing member 4 is disposed in the second clamping groove 9;

[0106] The first retaining groove 8 and the second retaining groove 9 are located on the same side of the rolling element 7 .

[0107] The first outer edge 20 of the first sealing member 3 and the first clamping groove 8 , as well as the second outer edge 22 of the second sealing member 4 and the second clamping groove 9 need to be transitionally matched to ensure tightness.

[0108] Because additional slots need to be provided, the width of the outer ring 1 is wider than that of the outer ring of the existing bearing.

[0109] In one embodiment, if Figure 2 , Figure 3 As shown, the outer wall of the inner ring 2 is provided with:

[0110] The first mating surface 12 , the first inner edge 19 of the first seal 3 , and the second inner edge 21 of the second seal 4 are matched with the first mating surface 12 , and the width of the first mating surface 12 is greater than the sum of the thickness of the first seal 3 , the thickness of the second seal 4 and the thickness of the isolation chamber 17 .

[0111] The first mating surface 12 can be regarded as constituting the bottom surface of the isolation chamber 17. In order to ensure the integrity of the isolation chamber 17 and prevent leakage of the sealing grease, the width of the first mating surface 12 needs to be larger, and it always has a mating relationship with the first seal 3 and the second seal 4. Therefore, the width of the first mating surface 12 needs to be greater than the sum of the thickness of the first seal 3, the thickness of the second seal 4 and the thickness of the isolation chamber 17.

[0112] Since an additional matching surface is required, the width of the inner ring 2 is wider than that of the inner ring of the existing bearing.

[0113] In one embodiment, if Fig. 9 , Fig.10 , Fig.11 As shown, the gas environment isolation bearing also includes:

[0114] The oil separator block 11 is arranged in the isolation chamber 17. The oil separator block 11 is fixedly connected to the outer ring 1. The oil separator block 11 can push the sealing grease toward the inner ring 2 so that the sealing grease seals the gap between the edge of the first seal 3 and the edge of the second seal 4 and the inner ring 2.

[0115] As the bearing rotates, the sealing grease tends to move toward the outer ring 1 under the action of centrifugal force. If no interference is made, the sealing grease will gradually escape from the gap between the edge of the first seal 3 and the edge of the second seal 4 and the inner ring 2, resulting in sealing failure. By providing the oil separator 11, as the bearing rotates, the oil separator 11 can push the sealing grease toward the inner ring 2, avoiding the lack of sealing grease in the gap between the edge of the first seal 3 and the edge of the second seal 4 and the inner ring 2, thereby ensuring the sealing effect of the bearing and the gas isolation effect.

[0116] The oil separator block 11 can be a solid body or a hollow body, and can be fixed to the inner wall of the outer ring 1 by welding.

[0117] In one embodiment, if Fig. 9 , Fig.10 , Fig.11 As shown, the oil separator block 11 is fan-shaped, and the thickness of the oil separator block 11 is less than the thickness of the isolation chamber 17 .

[0118] Because the isolation chamber 17 is annular and the sector is a part of the annular shape, the oil separator 11 is designed to be a sector, and the first surface 18 and the second surface 27 of the oil separator 11 are both cambered surfaces, which can better adapt to the structure of the isolation chamber 17. The thickness of the oil separator 11 is designed to be smaller than the thickness of the isolation chamber 17 in order to facilitate the arrangement of the first seal 3 and the second seal 4, ensure the structure of the isolation chamber 17, and avoid the oil separator 11 pressing against the first seal 3 or the second seal 4 to cause deformation of the isolation chamber 17, so as to cause sealing failure.

[0119] The first surface 18 of the oil separator 11 is matched and fixed with the inner wall curvature of the outer ring 1 in the isolation chamber 17, that is, the oil separator 11 is fixed on the inner wall of the outer ring 1, and the curvature of the second surface 27 of the oil separator 11 corresponds to the curvature of the first mating surface 12 of the inner ring 2, and is suspended on the first mating surface 12 of the inner ring 2. The gap between the second surface 27 of the oil separator 11 and the first mating surface 12 of the inner ring 2 is set to be less than or equal to the range of 0.01mm-0.1mm. The oil separator 11 can also fix the second surface 27 on the first mating surface 12 of the inner ring 2, and the first surface 18 is suspended facing the inner wall of the outer ring 1. In this case, the parameters of the oil separator 11 need to be designed in the opposite way. In this way, when the inner ring 2 of the bearing rotates or the outer ring 1 rotates, the oil separator 11 can continuously push the sealing grease in the isolation chamber 17 toward the direction of the inner ring 2 and separate it to both sides, so that the sealing grease is fully filled in the joint between the first seal 3, the second seal 4 and the first mating surface 12 of the inner ring 2.

[0120] In one embodiment, if Fig.12a , Figure 12b , Fig.12c As shown, the thickness of the oil separator block 11 gradually decreases from the outer edge to the inner edge of the oil separator block 11. The outer edge is the first surface 18, and the inner edge is the second surface 27.

[0121] The first side surface 25 and the second side surface 26 of the oil separator block 11 are both inclined planes, so that the cross section of the oil separator block 11 is an isosceles trapezoid, so that there is a first gap 29 between the oil separator block 11 and the first seal 3, and there is a second gap 30 between the oil separator block 11 and the second seal 4. Fig.10 As shown, the oil separator 11 can squeeze the sealing grease toward the inner ring 2 and separate the sealing grease to both sides at the same time.

[0122] When the oil separator block 11 squeezes the sealing grease toward the inner ring 2 and separates it to both sides, the sealing grease will be fully filled in the joints between the first seal 3, the second seal 4 and the first mating surface 12 of the inner ring 2. The oil separation action of the oil separator block 11 is repeated continuously. Even when the sealing grease in the isolation chamber 17 is not filled up, the sealing effect of the sealing grease on the joints between the first seal 3, the second seal 4 and the first mating surface 12 of the inner ring 2 can be guaranteed, thereby ensuring the gas isolation effect of the isolation chamber 17.

[0123] In one embodiment, if Fig.12a , Figure 12b , Fig.12c As shown, the two side edges of the oil separator block 11 are pointed, and the two side edges of the oil separator block 11 can squeeze and separate the sealing grease.

[0124] The side edges of the oil separator 11 can be chamfered 28 to make the side edges of the oil separator 11 sharp, which is more conducive to separating the sealing grease. Considering that the mechanical rotating body may rotate forward or reverse, the bearing may also rotate forward or reverse, so the side edges of the oil separator 11 are set to be sharp, and the side edges of the oil separator 11 can squeeze and separate the sealing grease.

[0125] In one embodiment, if Figure 3 , Figure 4 As shown, the gas environment isolation bearing also includes

[0126] The third sealing member 5 is arranged on the other side of the rolling element 7 and is used to seal the gap between the inner ring 2 and the outer ring 1 to prevent the leakage of lubricating oil.

[0127] Lubricating oil needs to be added between the inner ring 2 and the outer ring 1 to reduce the friction between the inner ring 2 and the outer ring 1 to reduce the friction between the inner ring 2 and the outer ring 1 and the rolling element 7. The third seal 5 is arranged on one side of the bearing to prevent the leakage of lubricating oil, and the second seal 4 and the first seal 3 are arranged on the other side of the bearing to prevent the leakage of lubricating oil.

[0128] The structure of the third sealing member 5 is the same as that of the first sealing member 3 , and reference may be made to the first sealing member 3 , which will not be described in detail here.

[0129] In one embodiment, the outer wall of the inner ring 2 is provided with:

[0130] The second mating surface 13 , the third inner edge 23 of the third sealing component 5 is matched with the second mating surface 13 , and the width of the second mating surface 13 is greater than the thickness of the third sealing component 5 .

[0131] In one embodiment, the inner wall of the outer ring 1 is provided with:

[0132] The third clamping groove 10 is annular in shape, and the third outer edge 24 of the third sealing member 5 is disposed in the third clamping groove 10 .

[0133] In one embodiment, between the inner ring 2 and the outer ring 1 there is provided:

[0134] Four or more seals, the seals are arranged between the inner ring 2 and the outer ring 1, at least two seals are located on one side of the rolling element 7, and at least another two seals are located on the other side of the rolling element 7;

[0135] An isolation chamber 17 is provided between two seals located on the same side of the rolling element 7 . Sealing grease is provided in the isolation chamber 17 to seal the gap between the edge of the seal and the inner ring 2 .

[0136] By providing more than four sealing elements and forming more than two isolation chambers 17, the sealing effect of the bearing can be further improved and the gas isolation effect can be ensured.

[0137] In one embodiment, the rolling element 7 comprises:

[0138] Ball 16 or needle roller; ball 16 is spherical, and needle roller can be conical or cylindrical;

[0139] The cage 6 holds the balls 16 or needle rollers between the inner ring 2 and the outer ring 1 .

[0140] The inner ring 2 is provided with a first rolling element groove 14 corresponding to the rolling element 7 . The first rolling element groove 14 is located between the first matching surface 12 and the second matching surface 13 . The ball 16 or the needle roller rolls in the first rolling element groove 14 .

[0141] The outer ring 1 is provided with a second rolling element groove 15 corresponding to the rolling element 7 . The second rolling element groove 15 is located between the second clamping groove 9 and the third clamping groove 10 . The ball 16 or the needle roller rolls in the second rolling element groove 15 .

[0142] The cage 6 is mounted on the rolling element 7 to evenly separate the balls 16 or the needle rollers and guide the balls 16 or the needle rollers to rotate.

[0143] A second aspect of the utility model provides a gas storage device, comprising a gas environment isolation bearing according to any one of the above technical solutions.

[0144] The utility model provides a gas environment isolation bearing and a gas storage device, which has the following characteristics:

[0145] The gas isolation bearing of the utility model operates in the same manner as a conventional bearing, and the gas isolation bearing can be used under special conditions, such as when the internal and external gas environments need to be isolated and the internal and external coaxial rotation is required.

[0146] The utility model realizes the isolation of gas by adding lubricating grease to the isolation chamber without changing the conventional application mode of the bearing.

[0147] The hardware involved in the utility model is easy to be familiar with and mastered, the design structure is simple and practical, and the technical requirement threshold is relatively low, which is convenient for production and promotion in various industries.

[0148] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0149] In understanding the scope of the present invention, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0150] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0151] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0152] The utility model has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model.

Claims

1. A gas environment isolation bearing, characterized in that: include: An outer ring (1), the outer ring (1) comprising an inner ring space; An inner ring (2), the inner ring (2) being arranged in the inner ring space of the outer ring (1); A rolling body (7), wherein the rolling body (7) is arranged between the inner ring (2) and the outer ring (1), and is capable of supporting the outer ring (1) and the inner ring (2) to rotate relative to each other; at least two seals, the two seals being arranged between the inner ring (2) and the outer ring (1) and located on the same side of the rolling element (7); An isolation chamber (17) is provided between the two sealing members, and sealing grease is provided in the isolation chamber (17) for sealing the gap between the edge of the sealing member and the inner ring (2).

2. The gas environment isolation bearing according to claim 1, characterized in that: The sealing member comprises: An outer ring (31), the outer edge of the outer ring (31) being sealedly connected to the inner wall of the outer ring (1); An airbag ring (32), the airbag ring (32) is sealedly connected to the outer ring (31), and the airbag ring (32) is elastically deformable; A coating ring (33) is connected to the airbag ring (32), and the inner edge of the coating ring (33) is transitionally matched or clearance-matched with the outer wall of the inner ring (2).

3. The gas environment isolation bearing according to claim 2, characterized in that: An air cavity is arranged inside the airbag ring (32), and the air cavity is filled with gas, so that the airbag ring (32) can be elastically deformed.

4. The gas environment isolation bearing according to claim 2, characterized in that: The coating ring (33) is a coating arranged on the inner edge of the airbag ring (32).

5. The gas environment isolation bearing according to claim 1, characterized in that: The inner wall of the outer ring (1) is provided with: A first card groove (8), the first card groove (8) is annular, and an outer edge of the sealing element is arranged in the first card groove (8); A second card groove (9), the second card groove (9) is annular, and the outer edge of another sealing member is arranged in the second card groove (9); The first clamping groove (8) and the second clamping groove (9) are located on the same side of the rolling body (7).

6. The gas environment isolation bearing according to claim 1, characterized in that: The outer wall of the inner ring (2) is provided with: A first mating surface (12), the inner edge of the sealing element is mated with the first mating surface (12), and the width of the first mating surface (12) is greater than the sum of the thickness of the sealing element and the thickness of the isolation chamber (17).

7. The gas environment isolation bearing according to claim 1, characterized in that: Also includes: An oil separator block (11), the oil separator block (11) being arranged in the isolation chamber (17), the oil separator block (11) being fixedly connected to the outer ring (1), the oil separator block (11) being capable of squeezing the sealing grease toward the inner ring (2), so that the sealing grease seals the gap between the edge of the sealing element and the inner ring (2).

8. The gas environment isolation bearing according to claim 7, characterized in that: The oil separation block (11) is fan-shaped, and the thickness of the oil separation block (11) is smaller than the thickness of the isolation chamber (17).

9. The gas environment isolation bearing according to claim 7, characterized in that: The thickness of the oil separation block (11) gradually decreases from the outer edge to the inner edge of the oil separation block (11).

10. The gas environment isolation bearing according to claim 7, characterized in that: The two side edges of the oil separation block (11) are pointed, and the two side edges of the oil separation block (11) are capable of squeezing and separating the sealing grease.

11. The gas environment isolation bearing according to any one of claims 1 to 10, characterized in that: Disposed between the inner ring (2) and the outer ring (1) is: A first sealing member (3); A second sealing member (4), wherein the second sealing member (4) is closer to the rolling element (7) than the first sealing member (3), and the isolation chamber (17) is provided between the first sealing member (3) and the second sealing member (4).

12. The gas environment isolation bearing according to claim 11, characterized in that: Also includes A third sealing member (5) is arranged on the other side of the rolling element (7) and is used to seal the gap between the inner ring (2) and the outer ring (1) to prevent lubricating oil from leaking.

13. The gas environment isolation bearing according to claim 12, characterized in that: The outer wall of the inner ring (2) is provided with: a second mating surface (13), the inner edge of the third sealing member (5) being mated with the second mating surface (13), the width of the second mating surface (13) being greater than the thickness of the third sealing member (5); The inner wall of the outer ring (1) is provided with: A third clamping groove (10), the third clamping groove (10) is annular, and the outer edge of the third sealing member (5) is arranged in the third clamping groove (10).

14. The gas environment isolation bearing according to any one of claims 1 to 10, characterized in that: Disposed between the inner ring (2) and the outer ring (1): More than four seals, wherein the seals are arranged between the inner ring (2) and the outer ring (1), at least two of the seals are located on one side of the rolling element (7), and at least another two of the seals are located on the other side of the rolling element (7); An isolation chamber (17) is provided between the two seals located on the same side of the rolling element (7), and sealing grease is provided in the isolation chamber (17) for sealing the gap between the edge of the seal and the inner ring (2).

15. The gas environment isolation bearing according to any one of claims 1 to 10, characterized in that: The rolling element (7) comprises: Ball or needle rollers; A cage (6) holds the balls or needles between the inner ring (2) and the outer ring (1).

16. A gas storage device, characterized in that: Comprising a gas environment isolation bearing according to any one of claims 1-15.

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