CN215410171U - Sealing gasket and gravel pump - Google Patents
Sealing gasket and gravel pump Download PDFInfo
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- CN215410171U CN215410171U CN202121737302.9U CN202121737302U CN215410171U CN 215410171 U CN215410171 U CN 215410171U CN 202121737302 U CN202121737302 U CN 202121737302U CN 215410171 U CN215410171 U CN 215410171U
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- annular elastic
- elastic sealing
- annular
- gasket
- sealing part
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Abstract
The utility model provides a sealing gasket and a gravel pump. The sealing gasket comprises a sealing gasket body, wherein a first annular elastic sealing part used for being elastically abutted with the first component and a second annular elastic sealing part used for being elastically abutted with the second component are arranged on the sealing gasket body; the first annular elastic sealing part and the second annular elastic sealing part are wound on the same side surface of the sealing gasket body at intervals, and the first annular elastic sealing part is wound on the outer side of the second annular elastic sealing part; a groove part is formed between the first annular elastic sealing part and the second annular elastic sealing part; along the thickness direction of the sealing gasket body, the outer edge of the first annular elastic sealing part protrudes out of the outer edge of the second annular elastic sealing part. The utility model provides a sealing gasket, aiming at solving the technical problem that the sealing gasket cannot play a normal sealing role when a gravel pump works abnormally.
Description
Technical Field
The utility model belongs to the technical field of sealing equipment, and particularly relates to a sealing gasket and a gravel pump.
Background
Referring to fig. 5, the section of the sheath sealing gasket commonly used in the gravel pump at present has good sealing performance when the gravel pump normally operates (the pump cavity pressure is higher than the external pressure). If the gravel pump is in an abnormal operating state, the pump cavity forms a vacuum environment (the external pressure is higher than the pressure of the pump cavity), and the common sheath sealing gasket bears the acting force in the opposite direction and deforms to lose the sealing effect. Even if the gravel pump is restored to normal operation later, the deformed sheath gasket will not perform a normal sealing function, and therefore a gasket that can normally perform a good sealing function even when subjected to external pressure is required.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a sealing gasket, and aims to solve the technical problem that the sealing gasket cannot play a normal sealing role when a gravel pump works abnormally.
In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a gasket, including:
the sealing gasket comprises a sealing gasket body, wherein a first annular elastic sealing part and a second annular elastic sealing part are arranged on the sealing gasket body, the first annular elastic sealing part is elastically abutted to a first component, and the second annular elastic sealing part is elastically abutted to a second component;
the first annular elastic sealing part and the second annular elastic sealing part are wound on the same side surface of the sealing gasket body at intervals, and the first annular elastic sealing part is wound on the outer side of the second annular elastic sealing part; a groove part is formed between the first annular elastic sealing part and the second annular elastic sealing part; along the thickness direction of the sealing gasket body, the outer edge of the first annular elastic sealing part protrudes out of the outer edge of the second annular elastic sealing part.
In a possible realization, the first annular elastic sealing portion has a first annular upwardly concave arc surface.
In a possible realization, the second annular elastic sealing portion has a second annular upper concave arc face.
In one possible implementation, the groove portion has an annular concave arc surface.
In one possible implementation, the first annular concave-up arc surface, the annular concave-down arc surface, and the second annular concave-up arc surface are smoothly connected.
In a possible implementation manner, the distance difference of the outer edge of the first annular elastic sealing part protruding from the outer edge of the second annular elastic sealing part is 2.8mm-3.4 mm.
In one possible implementation, the sealing gasket is made of rubber.
It is a further object of the present invention to provide a gravel pump including a gasket as described above.
The sealing gasket provided by the utility model has the beneficial effects that: compared with the prior art, through setting up first annular elastic sealing portion and second annular elastic sealing portion, and the thickness direction of following the sealed pad body, the outer fringe protrusion of first annular elastic sealing portion in second annular elastic sealing portion, when the pump cover compresses tightly, receiving the extrusion of first annular elastic sealing portion and second annular elastic sealing portion, produce the pretension and seal, the deflection of first annular elastic sealing portion is greater than the deflection of second annular elastic sealing portion this moment, when gravel pump running state is unusual, because the deflection of first annular elastic sealing portion is greater than the deflection of second annular elastic sealing portion, sealed pad will take place deformation with first annular elastic sealing portion department strong point when this, cause second annular elastic sealing portion department to paste tight sealed face more, sealed effect is still good.
Drawings
FIG. 1 is a schematic cross-sectional view of a gasket according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural view of a sealing state in which a sealing gasket is fitted with a gravel pump body, a front guard plate and a guard plate connecting plate in a gravel pump during normal operation of the gravel pump according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sealing state in which a sealing gasket is matched with a gravel pump body, a front guard plate and a guard plate connecting plate in a gravel pump during abnormal operation of the gravel pump according to an embodiment of the present invention;
fig. 5 is a partial structural view of a prior art gasket.
Description of reference numerals: 10. a gasket body; 11. a first annular elastic seal portion; 12. a second annular elastic seal portion; 13. a groove part; 20. a gravel pump body; 30. a front guard plate; 40. a cavity; 50. and the guard plate is connected with the plate.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships illustrated in the drawings, are used for convenience in describing the utility model and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the utility model.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Further, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 4, the gasket of the present invention will now be described. The gasket comprises a gasket body 10. The gasket body 10 is provided with a first annular elastic sealing portion 11 and a second annular elastic sealing portion 12. The first annular elastic seal portion 11 elastically abuts against the first member, and the second annular elastic seal portion 12 elastically abuts against the second member.
The first annular elastic sealing portion 11 and the second annular elastic sealing portion 12 surround the same side surface of the gasket body 10 at an interval, and the first annular elastic sealing portion 11 surrounds the outer periphery of the second annular elastic sealing portion 12. A groove portion 13 is formed between the first annular elastic sealing portion 11 and the second annular elastic sealing portion 12. The outer edge of the first annular elastic sealing portion 11 protrudes from the second annular elastic sealing portion 12 in the thickness direction of the gasket body 10.
Compared with the prior art, the sealing gasket provided by the embodiment of the utility model has the advantages that the first annular elastic sealing part and the second annular elastic sealing part are arranged, the outer edge of the first annular elastic sealing part protrudes out of the second annular elastic sealing part along the thickness direction of the sealing gasket body, when the pump cover is pressed tightly, the first annular elastic sealing part and the second annular elastic sealing part are extruded to generate pre-tightening sealing, at the moment, the deformation amount of the first annular elastic sealing part is larger than that of the second annular elastic sealing part, when the operation state of the gravel pump is abnormal, the deformation amount of the first annular elastic sealing part is larger than that of the second annular elastic sealing part, so that the sealing gasket deforms at the supporting point of the first annular elastic sealing part, the second annular elastic sealing part is more tightly attached to the sealing surface, and the sealing effect is still good.
In some embodiments, referring to fig. 1 to 4, if the gasket provided by the embodiment of the present invention is applied to a gravel pump, the first component may be a gravel pump body 20, the second component may be a front shield 30, and the other side of the gasket body 10, which is not provided with the first annular elastic sealing portion 11, abuts against the shield connecting plate 50. After the sealing gasket provided by the embodiment of the utility model is installed in the gravel pump, the cavity 40 is formed at the groove part 13 because the sealing gasket provided by the embodiment of the utility model is pressed by the gravel pump body 20, the front guard 30 and the guard connecting plate 50.
In some embodiments, referring to fig. 1 to 4, the first annular elastic sealing portion 11 has a first annular concave arc surface. In this embodiment, concave cambered surface and first part butt on the first annular of first annular elastic sealing portion 11, when the gravel pump normal operating, along with the pressure rise in the pump chamber, concave cambered surface produces the area of contact increase of deformation and first part butt on the first annular, and contact stress increases simultaneously, and first annular elastic sealing portion 11 is inseparabler with the cooperation of first part to play good sealed effect.
In some embodiments, referring to fig. 1 to 4, the second annular elastic sealing portion 12 has a second annular concave upward arc surface. In this embodiment, concave cambered surface and second part butt on the second ring of second annular elastic sealing portion 12, when the gravel pump normal operating, along with the pressure rise in the pump chamber, the concave cambered surface produces the area of contact increase of deformation and second part butt on the second ring, and contact stress increases simultaneously, and second annular elastic sealing portion 12 is inseparabler with the cooperation of second part to play good sealed effect.
In some embodiments, referring to fig. 1 and 2, the groove portion 13 of the gasket according to the embodiment of the present invention has an annular concave arc surface. Specifically, when the sealing gasket is normally sealed, the outer edges of the first annular upper concave arc surface and the second annular upper concave arc surface are protruded out of the annular lower concave arc surface.
In some embodiments, referring to fig. 1 and fig. 2, the first annular concave-upward arc surface, the annular concave-downward arc surface, and the second annular concave-upward arc surface of the gasket according to the embodiments of the present invention are smoothly connected.
In some embodiments, referring to fig. 1 and 2, the distance between the outer edge of the first annular elastic sealing portion 11 and the outer edge of the second annular elastic sealing portion 12 of the gasket provided by the embodiments of the present invention is 2.8mm to 3.4 mm. In this embodiment, the outer edge of the first annular elastic sealing portion 11 protrudes out of the outer edge of the second annular elastic sealing portion 12, and when the gravel pump cover is pressed, the first annular elastic sealing portion 11 and the second annular elastic sealing portion 12 are pressed to generate pre-tightening sealing.
In some embodiments, referring to fig. 1 and 2, the distance between the outer edge of the first annular elastic sealing portion 11 and the outer edge of the second annular elastic sealing portion 12 of the gasket provided by the embodiments of the present invention is within a range of 3mm to 3.2 mm.
In some embodiments, the gasket provided in the embodiments of the present invention is made of rubber.
Based on the same inventive concept, the embodiment of the present application further provides a gravel pump comprising the sealing gasket in the above embodiment. The gravel pump provided by the embodiment of the utility model comprises the sealing gasket in the embodiment, so that all the beneficial effects of the sealing gasket are achieved.
The embodiment of the utility model provides a specific implementation mode of a sealing gasket, which comprises the following steps: when the pump cover is pressed tightly, the first annular elastic sealing part 11 and the second annular elastic sealing part 12 are squeezed to generate pre-tightening sealing, and at the moment, the deformation amount of the first annular elastic sealing part 11 is larger than that of the second annular elastic sealing part 12 (the first annular elastic sealing part 11 is stressed greatly). When the gravel pump normally operates, along with the pressure rise in the pump cavity, the peripheral position of cavity 40 department receives circumferential compression, and contact with sealed face widen, and contact stress increases simultaneously, and concave cambered surface is inseparabler on first annular and the cooperation of concave cambered surface and second part on first annular and the second annular to play good sealed effect. When the operating condition of gravel pump is unusual, form vacuum environment in the pump chamber (ambient pressure is greater than pump chamber pressure), the outer terminal surface of sealed pad body 10 is influenced by ambient pressure and is inwards compressed, the inner terminal surface is influenced by ambient pressure and outwards compresses, because the deflection of its first annular elastic sealing portion 11 department is greater than second annular elastic sealing portion 12 department (first annular elastic sealing portion 11 department atress is great), so the sealed pad of sheath will be with first annular elastic sealing portion 11 department support point and take place deformation during this, cause second annular elastic sealing portion 12 department to paste tight sealed face more, sealed effect is still good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A gasket, comprising:
the sealing gasket comprises a sealing gasket body, wherein a first annular elastic sealing part and a second annular elastic sealing part are arranged on the sealing gasket body, the first annular elastic sealing part is elastically abutted to a first component, and the second annular elastic sealing part is elastically abutted to a second component;
the first annular elastic sealing part and the second annular elastic sealing part are wound on the same side surface of the sealing gasket body at intervals, and the first annular elastic sealing part is wound on the outer side of the second annular elastic sealing part; a groove part is formed between the first annular elastic sealing part and the second annular elastic sealing part; along the thickness direction of the sealing gasket body, the outer edge of the first annular elastic sealing part protrudes out of the outer edge of the second annular elastic sealing part.
2. The gasket of claim 1 wherein said first annular resilient sealing portion has a first annular upwardly concave arcuate surface.
3. A gasket according to claim 2, wherein said second annular resilient sealing portion has a second annular upwardly concave curved surface.
4. The gasket of claim 3 wherein said groove portion has an annular concave arcuate surface.
5. The gasket of claim 4 wherein said first annular concave upward curved surface, said annular concave downward curved surface, and said second annular concave upward curved surface are smoothly connected.
6. A gasket according to any one of claims 1 to 5, wherein the outer edge of said first annular resilient sealing portion projects from the outer edge of said second annular resilient sealing portion by a distance in the range of 2.8mm to 3.4 mm.
7. A sealing gasket according to any one of claims 1 to 5, wherein said gasket is of rubber material.
8. Grit pump, comprising a gasket according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121737302.9U CN215410171U (en) | 2021-07-28 | 2021-07-28 | Sealing gasket and gravel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121737302.9U CN215410171U (en) | 2021-07-28 | 2021-07-28 | Sealing gasket and gravel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215410171U true CN215410171U (en) | 2022-01-04 |
Family
ID=79653825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121737302.9U Active CN215410171U (en) | 2021-07-28 | 2021-07-28 | Sealing gasket and gravel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215410171U (en) |
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2021
- 2021-07-28 CN CN202121737302.9U patent/CN215410171U/en active Active
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