Seals and sealing structures

Abstract

The present invention provides a seal and a sealing structure. The seal comprises: a sealing ring having a first side and a second side disposed opposite each other, and being elastically configured; and a supporting portion comprising a first supporting plate disposed on the first side and a second supporting plate disposed on the second side. The first supporting plate is used to seal a sealing medium, and a first channel is defined on the first supporting plate. The sealing ring has a sealing cavity disposed within the first supporting plate, and a second channel is disposed on the first side, communicating with the sealing cavity. The first channel and the second channel are connected. The seal and sealing structure provided by the present invention are intended to address the problem in conventional seals of easily failing under dynamic pressure, resulting in a shortened service life.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing structures, and in particular to a sealing component and a sealing structure. Background Art

[0002] Sealing structures are crucial components in mechanical equipment. Existing mechanical structures often rely on O-rings for sealing. Traditional O-rings are installed in a sealing groove and achieve their sealing function through the extrusion and deformation of two sealing surfaces. Currently, the pressure of the medium within the sealing end faces of most mechanical equipment fluctuates, and there is also friction caused by slight displacement between the two sealing surfaces. Traditional O-rings are susceptible to increased wear under dynamic pressure, shortening their service life and potentially causing seal failure and leakage. Summary of the Invention

[0003] The present invention provides a sealing element and a sealing structure, aiming to solve the problem that sealing elements in traditional technologies are prone to sealing failure and shortened service life under dynamic pressure.

[0004] In view of the problems existing in the prior art, an embodiment of the present invention provides a sealing member, comprising:

[0005] a sealing ring, the sealing ring comprising a first side and a second side arranged opposite to each other, the sealing ring being elastically arranged; and

[0006] a supporting portion, comprising a first supporting plate provided on the first side and a second supporting plate provided on the second side;

[0007] The first support plate is used to seal the sealing medium. A first channel is provided on the first support plate. A sealing cavity is provided in the sealing ring. A second channel communicating with the sealing cavity is provided on the first side. The first channel is communicated with the second channel.

[0008] According to a sealing member provided by the present invention, the sealing member further includes contact blocks respectively provided at both ends of the sealing ring.

[0009] According to a sealing member provided by the present invention, an end surface of each contact block is arranged to protrude from an end surface of the sealing ring.

[0010] According to a sealing member provided by the present invention, both ends of the sealing ring are provided with mounting grooves, and the contact blocks are arranged in the corresponding mounting grooves.

[0011] According to a sealing member provided by the present invention, a third channel is further provided in the sealing ring, one end of the third channel is communicated with the mounting groove, and the other end of the third channel is communicated with the sealing cavity.

[0012] According to a sealing member provided by the present invention, the contact block comprises a porous non-metallic contact block.

[0013] According to a sealing component provided by the present invention, a positioning groove is formed on the first side, a positioning block is provided on the first supporting plate, and the positioning block is inserted into the positioning groove.

[0014] According to the sealing member provided by the present invention, the second side is arranged in contact with the second supporting plate.

[0015] According to a sealing element provided by the present invention, the first channel and the second channel are arranged collinearly.

[0016] The present invention also provides a sealing structure, comprising:

[0017] A mating piece, comprising a first mating portion and a second mating portion arranged opposite to each other, wherein the second mating portion is provided with a sealing groove, a sealing channel is formed between the first mating portion and the second mating portion, and the sealing channel is filled with a sealing medium; and

[0018] The sealing member is a sealing member as described in any one of the above items, the sealing member is arranged in the sealing groove, a part of the first supporting plate is located in the sealing channel, and the end face of the sealing ring abuts against the first matching portion to seal the sealing medium.

[0019] The seal provided by the present invention provides a sealing cavity in the sealing ring and provides a first channel connected to the sealing cavity on the first support plate. When the pressure increases, the sealing medium can enter the sealing cavity through the first channel. On the one hand, the sealing performance of the first support plate can be adjusted, and on the other hand, the volume of the sealing ring can also be adjusted according to the pressure change, which is not easy to cause wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a cross-sectional structural schematic diagram of the sealing structure provided by the present invention.

[0022] Figure markings: 1: first matching part; 2: second matching part; 21: sealing groove; 22: sealing channel; 23: sealing medium; 3: sealing element; 31: sealing ring; 311: positioning groove; 312: sealing cavity; 313: mounting groove; 32: first supporting plate; 321: positioning block; 33: second supporting plate; 34: first channel; 35: second channel; 36: third channel; 37: contact block. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise specified or limited, a first feature "above" or "below" a second feature may be such that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.

[0027] "Above" and "above" can mean that the first feature is directly above or obliquely above the second feature, or

[0028] It simply means that the first feature is higher than the second feature. The first feature being “below,” “below,” or “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower than the second feature.

[0029] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0030] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] The following combination Figure 1 The sealing member 3 and the sealing structure provided by the present invention are described.

[0032] In view of the problem that sealing components in conventional technologies are prone to sealing failure under dynamic pressure and have a shortened service life, an embodiment of the present invention provides a sealing component 3 including a sealing ring 31 and a supporting portion.

[0033] See also Figure 1 The sealing ring 31 includes a first side and a second side that are arranged opposite to each other. The sealing ring 31 is elastically arranged and can be deformed. The supporting portion includes a first supporting plate 32 arranged on the first side and a second supporting plate 33 arranged on the second side. Among them, the first supporting plate 32 is used to seal the sealing medium 23. A first channel 34 is provided on the first supporting plate 32. A sealing cavity 312 is provided in the sealing ring 31. A second channel 35 communicating with the sealing cavity 312 is provided on the first side. The first channel 34 is connected to the second channel 35. It can be understood that the sealing medium 23 is prone to volume change under the action of pressure. When the pressure of the sealing medium 23 increases, it will apply pressure to the first supporting plate 32. After the first supporting plate 32 is subjected to force, it will squeeze the sealing ring 31. Since the sealing ring 31 is elastically arranged, it can be squeezed and deformed to increase the fitting force with the sealing end face. When the pressure of the sealing medium 23 increases further, the sealing medium 23 can enter the sealing cavity 312 through the first channel 34 and the second channel 35, so that the pressure inside and outside the sealing ring 31 is balanced, preventing the sealing ring 31 from being over-pressurized and failing to seal.

[0034] During the deformation process of the sealing ring 31, the two ends of the sealing ring 31 will produce relative displacement with the sealing end face, causing the sealing ring 31 to wear. In order to prevent the sealing ring 31 from wearing, the seal 3 also includes contact blocks 37 provided at both ends of the sealing ring 31. The contact blocks 37 are in contact with the sealing end face, which can effectively prevent the sealing ring 31 from wearing. It should be noted that the contact block 37 should be made of a different material from the sealing ring 31. The sealing ring 31 is elastic, and the contact block 37 can be made of a hard material with a certain strength. Furthermore, the end face of the contact block 37 is arranged to protrude from the end face of the sealing ring 31, so that the contact block 37 can contact the sealing end face, preventing the sealing ring 31 from contacting and displacing with the sealing end face to generate friction, thereby leading to problems such as reduced service life or sealing failure.

[0035] Contact blocks 37 can be directly bonded to both ends of the sealing end. This may require a smaller thickness for contact blocks 37, and may also cause them to fall off during frictional displacement. In the technical solution provided by the present invention, mounting grooves 313 are provided at both ends of the sealing ring 31, and contact blocks 37 are mounted in the corresponding mounting grooves 313. The provision of mounting grooves 313 effectively positions contact blocks 37, making them less likely to fall off when in contact with the sealing end face, thereby ensuring a stable sealing effect.

[0036] Furthermore, a third channel 36 is provided within the sealing ring 31. One end of the third channel 36 communicates with the mounting groove 313 and the other end communicates with the sealing cavity 312. The contact block 37 comprises a porous non-metallic contact block 37. As previously described, when the pressure of the sealing medium 23 increases, it enters the sealing cavity 312. The sealing medium 23 within the sealing cavity 312 then flows through the third channel 36 into the mounting groove, where it contacts the contact block 37. Due to the porous structure of the contact block 37, the sealing medium 23, such as hydraulic oil, penetrates into the contact block 37, lubricating it and forming a lubricating surface on the end surface of the contact block 37, thereby reducing wear between the contact block 37 and the sealing end surface. In an alternative embodiment, the contact block 37 may comprise a porous non-metallic stuffing box.

[0037] It should be noted that when the pressure of the sealing medium 23 increases, it exerts a force on the first support plate 32. To facilitate the positioning and installation of the first support plate 32, prevent deformation and displacement of the first support plate 32 under pressure, and increase the contact area between the first support plate 32 and the sealing ring 31, a positioning groove 311 is defined on the first side. A positioning block 321 is provided on the first support plate 32, and the positioning block 321 is inserted into the positioning groove 311. Furthermore, the first channel 34 and the second channel 35 are arranged colinearly, which helps reduce resistance to the flow of the sealing medium 23.

[0038] It should also be noted that the second side is positioned in close contact with the second support plate 33, creating a large contact area, which facilitates sufficient deformation of the sealing ring 31. The first support plate 32 and the second support plate 33 can be made of different materials depending on the sealing medium 23 and the pressure level. Hard materials such as metal and synthetic resin can be used. The sealing ring 31 can be made of a highly elastic and wear-resistant material such as polyurethane, silicone rubber, or nitrile rubber.

[0039] On the basis of the above-mentioned sealing member 3, the present invention also provides a sealing structure, comprising: a fitting, comprising a first fitting part 1 and a second fitting part 2 arranged opposite to each other, a sealing groove 21 being provided on the second fitting part 2, a sealing channel 22 being formed between the first fitting part 1 and the second fitting part 2, and the sealing channel 22 being filled with a sealing medium 23; and a sealing member 3, the sealing member 3 being arranged in the sealing groove 21, a part of the first support plate 32 being located in the sealing channel 22, and the end face of the sealing ring 31 being in contact with the first fitting part 1 for sealing the sealing medium 23. The sealing structure provided by the present invention achieves sealing at low pressures by prestressing the sealing ring 31 between the first and second mating parts 1 and 2. At high pressures, the sealing cavity 312 within the sealing ring 31 ensures sealing performance while preventing excessive deformation and failure of the sealing ring 31. The porous contact block 37 allows the sealing medium 23 to penetrate the sealing end surface through perspiration, acting as a lubricant and reducing wear between the sealing ring 31 and the mating component. The first and second support plates 32 and 33 ensure more uniform force on the sealing ring 31 during the sealing process. This invention has a simple structure and high reliability, significantly extending the life of the seal.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A seal, characterized in that: include: a sealing ring, the sealing ring comprising a first side and a second side arranged opposite to each other, the sealing ring being elastically arranged; and a supporting portion, comprising a first supporting plate provided on the first side and a second supporting plate provided on the second side; The first support plate is used to seal the sealing medium. A first channel is formed on the first support plate. A sealing cavity is formed in the sealing ring. A second channel communicating with the sealing cavity is formed on the first side. The first channel is in communication with the second channel. The sealing member further includes contact blocks provided at both ends of the sealing ring. The end surface of each contact block protrudes from the end surface of the sealing ring; Both ends of the sealing ring are provided with mounting grooves, and the contact blocks are arranged in the corresponding mounting grooves; A third channel is further provided in the sealing ring, one end of the third channel is communicated with the mounting groove, and the other end of the third channel is communicated with the sealing cavity; The contact block includes a porous non-metallic contact block.

2. The seal according to claim 1, characterized in that A positioning groove is formed on the first side, and a positioning block is provided on the first supporting plate. The positioning block is inserted into the positioning groove.

3. The seal according to claim 1, wherein: The second side is disposed in contact with the second supporting plate.

4. The seal according to claim 1, wherein: The first channel and the second channel are collinearly arranged.

5. A sealing structure, characterized in that: include: A mating piece, comprising a first mating portion and a second mating portion arranged opposite to each other, wherein the second mating portion is provided with a sealing groove, a sealing channel is formed between the first mating portion and the second mating portion, and the sealing channel is filled with a sealing medium; and The seal is a seal as described in any one of claims 1-4, the seal is arranged in the sealing groove, a part of the first support plate is located in the sealing channel, and the end face of the sealing ring abuts against the first matching part to seal the sealing medium.

Images