CN216200491U - Mechanical sealing element with built-in tenon-and-mortise sealing structure - Google Patents

Abstract

The utility model discloses a mechanical sealing element with a built-in tenon-and-mortise sealing structure, which comprises a movable ring and a stationary ring seat, wherein the stationary ring seat comprises a first stationary ring and a second stationary ring, the upper edge of the movable ring is provided with a sealing plate with an inner edge, the top end of the first stationary ring is abutted against the lower surface of the sealing plate, the thickness of the first stationary ring is equal to the width of the sealing plate, the second stationary ring comprises a stationary ring cylinder and a sealing plate which is arranged on the upper edge of the stationary ring cylinder and extends out of the movable ring, the sealing plate and the first stationary ring are provided with a through mortise slot, and the lower surface of the sealing plate is provided with a tenon rod matched with the mortise slot. Keeping the structure stable.

Description

Mechanical sealing element with built-in tenon-and-mortise sealing structure

Technical Field

The utility model relates to a mechanical sealing element, in particular to a mechanical sealing element with a built-in mortise and tenon sealing structure.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by keeping at least one end surface perpendicular to the axis of the rotating shaft in fit and relative sliding under the action of fluid pressure and the elastic force of the compensating mechanism and the matching of the auxiliary seal. For example, in equipment such as a centrifugal pump, a centrifugal machine, a reaction kettle, a compressor and the like, a circumferential gap exists between a rotating shaft and the equipment as the rotating shaft penetrates through the inside and the outside of the equipment; when the rotating shaft rotates relative to the equipment, the medium inside the equipment can leak outwards through the circumferential gap; if the pressure inside the apparatus is lower than atmospheric pressure, air will flow into the apparatus and a sealing means against leakage is necessary. At present there are a large amount of mechanical seal, mostly are connected with quiet ring through being connected with on the equipment, are connected with the rotating ring in the pivot, are provided with the spring in order to guarantee the laminating of rotating ring terminal surface and quiet ring terminal surface at the rotating ring with quiet ring in the axial to the rotating ring can rotate for quiet ring. However, when the moving ring axially jumps relative to the stationary ring in the prior art, an instantaneous axial gap is still formed between the end surface of the moving ring and the end surface of the stationary ring, and the medium in the device leaks outwards from the axial gap. That is to say, the existing mechanical sealing element can not ensure the state that the end face of the movable ring and the end face of the stationary ring are always attached under the condition that the rotating shaft rotates.

Disclosure of Invention

The purpose of the utility model is as follows: the utility model aims to provide a mechanical sealing element with a built-in mortise and tenon sealing structure aiming at the defects of the prior art.

The technical scheme is as follows: the mechanical sealing element with the built-in tenon-and-mortise sealing structure comprises a movable ring and a stationary ring seat, wherein the stationary ring seat comprises a first stationary ring and a second stationary ring, a sealing plate with an inner edge is arranged at the upper edge of the movable ring, the top end of the first stationary ring is abutted against the lower surface of the sealing plate, the thickness of the first stationary ring is equal to the width of the sealing plate, the second stationary ring comprises a stationary ring barrel and a sealing plate which is arranged at the upper edge of the stationary ring barrel and extends out of the movable ring, a through mortise slot is formed in the sealing plate and the first stationary ring, and a tenon rod matched with the mortise slot is arranged on the lower surface of the sealing plate.

Preferably, the width of the obturation plate is equal to the sum of the width of the sealing plate and the thickness of the movable ring.

Preferably, the mortise slots are at least three, and the tenon rods are matched with the mortise slots one by one.

Preferably, all the mortise slots are circumferentially arranged on the sealing plate and the first stationary ring at equal intervals.

Preferably, the mortise slot comprises a trapezoid mortise slot with a trapezoidal longitudinal section, the trapezoid mortise slot is wide at the top and narrow at the bottom, and the length ratio of the long side to the short side is 1.5: 1.

preferably, a rubber damping layer is attached to the inner side wall of the mortise slot.

Preferably, the upper end of the rubber damping layer is connected with a matched sealing rubber ring.

Compared with the prior art, the utility model has the following beneficial effects: the sealing structure of two reverse opposite buckles is realized through the sealing plate which is provided with the inward extension and the airtight plate which is provided with the outward extension, a small gap generated when the movable ring is off-axis can be effectively sealed, the movable ring and the static ring seat can be effectively positioned by the matched mortise and tenon rod structure, and the structure is stable.

Drawings

Fig. 1 is a schematic sectional structure view of a mechanical sealing element with a built-in mortise and tenon sealing structure.

In the figure: 1. a moving ring; 2. a sealing plate; 3. a first stationary ring; 4. a second stationary ring; 5. a closing plate; 6. mortise slot making; 7. a tenon rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

The utility model provides a mechanical seal of built-in tenon fourth of twelve earthly branches seal structure, including rotating ring 1 and quiet ring holder, quiet ring holder includes first quiet ring 3 and the quiet ring 4 of second, the closing plate 2 on edge was equipped with in the rotating ring 1, the thickness that the top of first quiet ring 3 contradicted closing plate 2's lower surface and first quiet ring 3 equals with the width of closing plate 2, the quiet ring 4 of second includes quiet ring barrel and sets up the closing plate 5 that extends on the quiet ring barrel and to rotating ring 1 outward, set up the fourth of twelve earthly branches groove 6 that link up on closing plate 2 and the first quiet ring 3, be equipped with on the lower surface of closing plate 5 with fourth of twelve earthly branches groove 6 complex tenon pole 7. The advantage of this technical scheme lies in having realized the seal structure of two reverse buckleing through setting up inside extension's closing plate 2 and outside extension obturator 5, and the small gap that produces when the loose tooling 1 off-axis can effectively be sealed, has set up complex fourth of the twelve earthly branches groove 6 and tenon rod 7 structure and can effectively fix a position loose tooling 1 and quiet ring seat, keeps stable in structure.

In order to ensure that the sealing plate 5 does not damage the integrity of the mechanical seal, the width of the sealing plate 5 is equal to the sum of the width of the sealing plate 2 and the thickness of the movable ring 1.

In order to avoid the rotating ring 1 to deflect in the stationary ring seat, based on the principle that multipoint fixing is more stable, the mortise slot 6 is at least three, the tenon rod 7 is matched with the mortise slot 6 one by one, and all the mortise slots 6 are circumferentially arranged on the sealing plate 2 and the first stationary ring 3 at equal intervals.

In addition, mortise slot 6 includes that longitudinal section is trapezoidal fourth of twelve earthly branches groove 6, and trapezoidal fourth of twelve earthly branches groove 6 is wide down narrow, and the length ratio of its long limit and minor face is 1.5: 1, this kind of 6 cooperation tenon poles 7 in trapezoidal fourth of twelve earthly branches groove can constitute a wedge-shaped connection structure, can compress tightly movable ring 1 and quiet ring seat each other when receiving the side direction stress, reduce further displacement, and further, the laminating is provided with the rubber damping layer on the inside wall in fourth of twelve earthly branches groove 6, and the upper end on rubber damping layer is connected with the complex rubber packing ring, and rubber damping layer and rubber packing ring cooperation can further improve and compress tightly and sealed effect.

In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example.

Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. The utility model provides a mechanical seal of built-in tenon fourth of twelve earthly branches seal structure, includes rotating ring and quiet ring holder, its characterized in that: the quiet ring holder includes first quiet ring and the quiet ring of second, the closing plate on edge was equipped with in the rotating ring, the lower surface of the top conflict closing plate of first quiet ring and the thickness of first quiet ring equals with the width of closing plate, the quiet ring of second includes quiet ring barrel and sets up the closing plate that extends on quiet ring barrel reason and the rotating ring outward, set up the mortise that link up on closing plate and the first quiet ring, be equipped with on the closing plate lower surface with mortise complex tenon pole.

2. The mechanical sealing element of the built-in mortise and tenon joint sealing structure according to claim 1, wherein: the width of the obturation plate is equal to the sum of the width of the sealing plate and the thickness of the movable ring.

3. The mechanical sealing element of the built-in mortise and tenon joint sealing structure according to claim 1, wherein: the mortise slot is at least three, and the tenon rod is matched with the mortise slot one by one.

4. The mechanical sealing element of the built-in mortise and tenon joint sealing structure according to claim 3, wherein: all the mortise slots are circumferentially arranged on the sealing plate and the first static ring at equal intervals.

5. The mechanical sealing element of the built-in mortise and tenon joint sealing structure according to claim 1, wherein: the mortise slot comprises a trapezoidal mortise slot with a longitudinal section, the trapezoidal mortise slot is wide at the top and narrow at the bottom, and the length ratio of a long edge and a short edge is 1.5: 1.

6. the mechanical sealing element of the built-in mortise and tenon joint sealing structure according to claim 1, wherein: and a rubber damping layer is attached to the inner side wall of the mortise slot.

7. The mechanical sealing element of the built-in mortise and tenon joint sealing structure according to claim 6, wherein: and the upper end of the rubber damping layer is connected with a matched sealing rubber ring.

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