阅读说明：本技术 一种旋转式密封结构 (Rotary sealing structure ) 是由 黄雄华 于 2019-09-27 设计创作，主要内容包括：本发明公布了一种旋转式密封结构,它包括相互密封的上密封块和下密封块；所述上密封块和下密封块上设置有通孔；所述通孔内穿插有旋转轴；所述旋转轴上套设有旋转浮环；所述旋转浮环可活动的设置在上密封块与下密封块之间的第二密封槽内；所述第二密封槽的上下表面为平整的密封面。本发明的目的是提供一种旋转式密封结构,该密封机构结构简单,磨损小,旋转轴在2W转以上的高速状态下,仍能达到较好的动态密封的效果。(The invention discloses a rotary sealing structure, which comprises an upper sealing block and a lower sealing block which are sealed mutually; through holes are formed in the upper sealing block and the lower sealing block; a rotating shaft is inserted into the through hole; the rotating floating ring is sleeved on the rotating shaft; the rotary floating ring is movably arranged in a second sealing groove between the upper sealing block and the lower sealing block; the upper surface and the lower surface of the second sealing groove are flat sealing surfaces. The invention aims to provide a rotary sealing structure which is simple in structure and small in abrasion, and a rotating shaft can still achieve a good dynamic sealing effect in a high-speed state of more than 2W turns.)

1. A rotary seal structure, characterized in that it comprises an upper seal block (3) and a lower seal block (4) which are sealed with each other; through holes (8) are formed in the upper sealing block (3) and the lower sealing block (4); a rotating shaft (1) is inserted into the through hole (8); the rotating shaft (1) is sleeved with a rotating floating ring (2); the rotary floating ring (2) is movably arranged in a second sealing groove (7) between the upper sealing block (3) and the lower sealing block (4); the upper surface and the lower surface of the second sealing groove (7) are flat sealing surfaces.

2. A rotary seal construction according to claim 1, characterised in that a sealing ring (6) is arranged between the upper sealing block (3) and the lower sealing block (4); the sealing ring (6) is arranged in a first sealing groove (5) between the upper sealing block (3) and the lower sealing block (4).

3. A rotary seal construction according to claim 1, wherein the upper and lower surfaces of the rotary floating ring (2) are flat sealing surfaces.

4. A rotary seal structure according to claim 1, wherein the upper and lower surfaces of the rotary floating ring (2) are arcuate seal surfaces.

5. A rotary seal structure according to claim 1, wherein the rotary float ring (2) is provided with seal bosses (201) on both upper and lower surfaces thereof.

6. A rotary seal arrangement according to claim 2, characterised in that the seal ring (6) is an O-ring seal.

7. A rotary seal arrangement according to claim 4, characterised in that the upper or lower surface of the seal boss (201) is a flat seal face.

Technical Field

The invention relates to a sealing structure, in particular to a rotary sealing structure.

Background

The existing sealing for a rotary motion mechanism generally adopts a double-lip sealing ring, and has the defects that the double-lip sealing ring is only suitable for sealing of a low-speed motion mechanism, is very easy to wear when a high-speed motion mechanism is applied for sealing, and is easy to cause the double-lip sealing ring to be not concentric with a rotating shaft due to a certain reason when the rotating shaft rotates at a high speed, and is easy to shift during operation, so that the double-lip sealing ring is accelerated to wear, and the effect of high-speed sealing cannot be achieved.

Disclosure of Invention

The invention aims to solve the problems and provides a rotary sealing structure which is simple in structure and small in abrasion, and can achieve a good dynamic sealing effect even when a rotating shaft is in a high-speed state of more than 2W turns.

In order to realize the purpose, the invention adopts the technical scheme that: it comprises an upper sealing block 3 and a lower sealing block 4 which are sealed with each other; through holes 8 are formed in the upper sealing block 3 and the lower sealing block 4; the rotating shaft 1 is inserted into the through hole 8; the rotating shaft 1 is sleeved with a rotating floating ring 2; the rotary floating ring 2 is movably arranged in a second sealing groove 7 between the upper sealing block 3 and the lower sealing block 4; the upper and lower surfaces of the second seal groove 7 are flat seal surfaces.

Further, a sealing ring 6 is arranged between the upper sealing block 3 and the lower sealing block 4; the sealing ring 6 is arranged in the first sealing groove 5 between the upper sealing block 3 and the lower sealing block 4.

Further, the upper surface and the lower surface of the rotary floating ring 2 are flat sealing surfaces.

Further, the upper and lower surfaces of the rotary floating ring 2 are arc-shaped sealing surfaces.

Further, the upper and lower surfaces of the rotary floating ring 2 are provided with sealing bosses 201.

Further, the sealing ring 6 is an O-shaped sealing ring.

Further, the upper surface or the lower surface of the sealing boss 201 is a flat sealing surface.

The invention has the beneficial effects that: the invention provides a rotary sealing structure which is simple in structure, the position of a rotary floating ring is floating, the rotary floating ring keeps concentric with a rotating shaft, when the rotating shaft rotates at a high speed, the rotary floating ring and the rotating shaft rotate together, the abrasion is small, and a better sealing effect is achieved.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is a schematic cross-sectional view of an upper sealing block and a lower sealing block according to the present invention.

Figure 3 is a cross-sectional view of a preferred construction of the invention.

Fig. 4 is a cross-sectional view of another preferred construction of the invention.

Fig. 5 is a schematic structural view of the rotary floating ring in fig. 4.

The text labels in the figures are represented as: 1. a rotating shaft; 2. rotating the floating ring; 3. an upper sealing block; 4. a lower seal block; 5. a first seal groove; 6. a seal ring; 7. a second seal groove; 8. a through hole; 201. and sealing the boss.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 5, the specific structure of the present invention is: it comprises an upper sealing block 3 and a lower sealing block 4 which are sealed with each other; through holes 8 are formed in the upper sealing block 3 and the lower sealing block 4; the rotating shaft 1 is inserted into the through hole 8; the rotating shaft 1 is sleeved with a rotating floating ring 2; the rotary floating ring 2 is movably arranged in a second sealing groove 7 between the upper sealing block 3 and the lower sealing block 4; the upper and lower surfaces of the second seal groove 7 are flat seal surfaces.

Preferably, a sealing ring 6 is arranged between the upper sealing block 3 and the lower sealing block 4; the sealing ring 6 is arranged in the first sealing groove 5 between the upper sealing block 3 and the lower sealing block 4.

Preferably, the upper and lower surfaces of the rotary floating ring 2 are flat sealing surfaces.

Preferably, the upper and lower surfaces of the rotary floating ring 2 are arc-shaped sealing surfaces.

Preferably, the upper and lower surfaces of the rotary floating ring 2 are provided with sealing bosses 201.

Preferably, the sealing ring 6 is an O-ring.

Preferably, the upper surface or the lower surface of the sealing boss 201 is a flat sealing surface.

According to the working principle of the invention, as shown in fig. 1, in the process of high-speed rotation of the rotating shaft, different fluid pressures or gas pressures exist on the upper surface and the lower surface of the rotating floating ring, just under the action of the pressure difference, the rotating floating ring always approaches to the upper surface of the second sealing groove or the lower surface of the second sealing groove, and the gap between the rotating floating ring and the rotating shaft is extremely small, so that fluid or gas on one side is difficult to enter the other side, and the sealing effect is achieved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.