CN216617976U - Special-shaped sealing ring and front cover sealing structure - Google Patents

Abstract

The utility model belongs to the technical field of sealing rings, and particularly relates to a special-shaped sealing ring and a front cover sealing structure. The front cover sealing structure comprises a special-shaped sealing ring, a front cover and a flange piece. The special-shaped sealing ring comprises a ring body, wherein the ring body is provided with a rear end and a front end. The ring body is provided with a circle of first protruding parts at the rear end along the circumferential direction of the ring body, the width of the first protruding parts gradually decreases from front to back, and the tail ends of the first protruding parts narrow down to form a sharp point structure. The circumference along the circle body is equipped with round second bellying at its rear end, is equipped with the sealed chimb of round along the internal periphery of circle body, and sealed chimb is located between second bellying and the first bellying. The first bulge is sealed for the second time, has reached double-deck sealed from this, has effectively solved the liquid problem of revealing, has improved the durability of pump.

Description

Special-shaped sealing ring and front cover sealing structure

Technical Field

The utility model belongs to the technical field of sealing rings, and particularly relates to a special-shaped sealing ring and a front cover sealing structure.

Background

The front cover sealing mode of the existing magnetic pump adopts a sealing mode of assembling a front cover flange, screw teeth and a circular rubber sealing ring. For example, the chinese utility model with publication number CN205349776U discloses a corrosion-resistant magnetic pump, which comprises a motor, a foot seat, a front cover, an inlet flange, an outlet flange, a driving magnet, a back cover thrust ring, an axle center, a passive magnet, a bearing, a sealing "0" ring, an impeller, a wear-resistant ring, a front cover thrust ring, wherein the driving magnet is embedded in the groove of the foot seat, one end of the back cover is provided with a groove, the other end is provided with a protrusion, the protrusion of the back cover is embedded in the center of the driving magnet, one end of the axle center is embedded in the groove of the back cover, the connection part of the axle center and the back cover is provided with the back cover thrust ring, the axle center is embedded in the bearing, the bearing is embedded in the passive magnet, the other end of the axle center is connected with one end of the impeller, the other end of the impeller is attached to one end of the wear-resistant ring, the other end of wear-resisting circle with the laminating of the one end of protecgulum thrust collar mutually, the other end of protecgulum thrust collar with the groove of protecgulum laminates mutually, the recess terminal surface of back lid embedded in protecgulum groove, just back lid with the junction of protecgulum is provided with sealed "0" ring, the protecgulum pass through the fastener with foot seat fixed connection, the material of protecgulum, back lid, impeller is plastics, passive magnet surface cladding has the plastic layer. The "0" ring is typically a circular rubber seal ring that is susceptible to leakage over time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special-shaped sealing ring and a front cover sealing structure, and aims to solve the technical problem that the front cover in the prior art is sealed by a circular rubber sealing ring and is easy to leak after being used for a long time.

In order to achieve the above object, an embodiment of the present invention provides a special-shaped seal ring, which includes a ring body having a rear end and a front end; a circle of first protruding parts are arranged at the rear end of the ring body along the circumferential direction of the ring body, the width of each first protruding part gradually decreases from front to back, and the tail end of each first protruding part narrows to form a sharp point structure; follow the circumference of circle body is equipped with round second bellying at its rear end, follows the internal periphery of circle body is equipped with the sealed chimb of round, sealed chimb is located the second bellying with between the first bellying.

Optionally, the first boss is "V" shaped in cross-section.

Optionally, the sealing bead extends radially of the ring body and has an annular front end flat surface and an annular rear end flat surface.

Optionally, the cross section of the second protrusion is circular arc.

Optionally, the ring body is made of rubber or silica gel.

Optionally, the ring body, the first protruding portion, the second protruding portion and the sealing convex edge are of an integrally formed structure.

In order to achieve the above object, an embodiment of the present invention further provides a front cover sealing structure, including the special-shaped sealing ring.

Optionally, the front cover sealing structure further comprises:

the front cover is provided with a port, and the periphery of the port is provided with external threads; and

the flange piece is provided with a threaded hole which runs through the flange piece in the axial direction, the front end of the threaded hole is provided with a circle of step part, the special-shaped sealing ring is arranged in the step part, the interface is inserted into the threaded hole and the threaded hole are in threaded connection with the threaded hole and the threaded connection with the threaded hole, the special-shaped sealing ring is tightly clamped between the step part and the interface end face of the interface, the first protruding part and the sealing convex edge are sequentially compressed to the interface end face of the interface respectively, and the second protruding part is compressed to the step part.

Optionally, the interface is arranged convexly on the front cover.

Optionally, the interface end face is planar.

One or more technical schemes in the special-shaped sealing ring and the front cover sealing structure provided by the embodiment of the utility model at least have one of the following technical effects: during the assembly, the interface with the screw hole lasts the locking, the point structure earlier with the interface end face contact of interface, after first bellying extrudeed certain degree, continue the extrusion sealed chimb, sealed chimb is first sealed, first bellying is that the second is said and seals, has reached double-deck sealedly from this, has effectively solved the liquid problem of revealing, has improved the durability of pump.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a front cover sealing structure according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of the area a shown in fig. 1.

Fig. 3 is an exploded view of a front cover seal arrangement provided by an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a profiled sealing ring provided in an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that, if directional indications are provided in the embodiments of the present invention, such as directions of up, down, left, right, front, back, inner, outer, etc., the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

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. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, as shown in fig. 1 to 4, a front cover sealing structure is provided, which includes a profiled sealing ring 1, a front cover 2 and a flange member 3. The special-shaped sealing ring 1 comprises a ring body 11, and the ring body 11 is provided with a rear end and a front end. A circle of first protrusions 12 is arranged at the rear end of the ring body 11 along the circumferential direction, and the width of the first protrusions 12 gradually decreases from front to back and the tail end of the first protrusions narrows to form a sharp point structure 121. A ring of second protrusions 13 is provided at the rear end of the ring body 11 in the circumferential direction, a ring of sealing beads 14 is provided along the inner circumferential edge of the ring body 11, and the sealing beads 14 are located between the second protrusions 13 and the first protrusions 12.

As shown in fig. 2, the front cover 2 has an interface 21, and specifically, the interface 21 is arranged on the front cover 2 in a convex shape for the convenience of assembly. The outer periphery of the interface 21 is provided with external threads 212. The flange piece 3 is provided with a threaded hole 31 penetrating through the flange piece in the axial direction, the front end of the threaded hole 31 is provided with a circle of step portion 32, the special-shaped sealing ring 1 is arranged in the step portion 32, the interface 21 is inserted into the threaded hole 31 and is in threaded connection with the threaded hole 31, the special-shaped sealing ring 1 is clamped between the step portion 32 and the interface end face 211 of the interface 21, the first protruding portion 12 and the sealing convex edge 14 are sequentially pressed to the interface end face 211 of the interface 21 respectively, the second protruding portion 13 is pressed to the step portion 32, and the interface end face 211 is preferably a plane.

During the assembly of this protecgulum sealing structure, interface 21 and screw hole 31 continuously lock, and the contact of the interface terminal surface 211 with interface 21 is earlier held to point structure 121, and first bellying 12 extrudees to certain degree after, continues to extrude sealed chimb 14, and sealed chimb 14 is sealed first way, and first bellying 12 is that the second is said sealedly, has reached double-deck sealedly from this, has effectively solved the liquid problem of revealing, has improved the durability of pump.

In some embodiments of the present invention, as shown in FIG. 2, the first protrusion 12 has a "V" shape in cross section, and the sealing effect is more stable.

In another embodiment of the present invention, as shown in fig. 2, the sealing bead 14 extends in the radial direction of the ring body 11 and has an annular front end flat 141 and an annular rear end flat 142. The front end plane 141 and the step part 32 are tightly attached, the rear end plane 142 and the interface end face 211 are tightly attached, and the attaching is tighter and the sealing effect is better under the condition that the planes are flat.

In another embodiment of the present invention, as shown in fig. 2, the cross section of the second protrusion 13 is circular arc, which has better sealing effect.

In another embodiment of the present invention, the ring body 11 is made of rubber or silicone, and the above material has certain elasticity, can be elastically compressed to achieve a sealing effect, and is corrosion-resistant.

In another embodiment of the present invention, the ring body 11, the first convex portion 12, the second convex portion 13 and the sealing flange 14 are integrally formed, so as to facilitate the processing and be more durable.

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 (10)

1. A heterotype sealing ring comprises a ring body, a first sealing ring and a second sealing ring, wherein the ring body is provided with a rear end and a front end; the ring is characterized in that a circle of first protruding part is arranged at the rear end of the ring body along the circumferential direction of the ring body, the width of the first protruding part gradually decreases from front to back, and the tail end of the first protruding part narrows to form a sharp point structure; follow the circumference of circle body is equipped with round second bellying at its rear end, follows the internal periphery of circle body is equipped with the sealed chimb of round, sealed chimb is located the second bellying with between the first bellying.

2. A profiled sealing ring according to claim 1, characterized in that the first protrusion is "V" shaped in cross-section.

3. A profiled sealing ring according to claim 1, characterized in that the sealing bead extends radially of the ring body and has an annular front end plane and an annular rear end plane.

4. A profiled sealing ring according to any one of claims 1 to 3, characterized in that the cross-section of the second protrusion is circular arc-shaped.

5. A profiled sealing ring according to any one of claims 1 to 3, characterized in that the material of the ring body is rubber or silicone.

6. A profiled sealing ring according to any one of claims 1 to 3, characterized in that the ring body, the first bead, the second bead and the sealing bead are of an integrally formed construction.

7. Front cover sealing arrangement, characterized in that it comprises a profiled sealing ring according to any of claims 1-6.

8. The bezel seal configuration of claim 7, further comprising:

the front cover is provided with a port, and the periphery of the port is provided with external threads; and

the flange piece is provided with a threaded hole which runs through the flange piece in the axial direction, the front end of the threaded hole is provided with a circle of step part, the special-shaped sealing ring is arranged in the step part, the interface is inserted into the threaded hole and the threaded hole are in threaded connection with the threaded hole and the threaded connection with the threaded hole, the special-shaped sealing ring is tightly clamped between the step part and the interface end face of the interface, the first protruding part and the sealing convex edge are sequentially compressed to the interface end face of the interface respectively, and the second protruding part is compressed to the step part.

9. The bezel seal arrangement of claim 8, wherein the interface is convexly disposed on the bezel.

10. The bezel seal arrangement according to claim 8 or 9, wherein the interface end face is planar.

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