CN214999406U

CN214999406U - Single-end-face mechanical seal for wave spring

Info

Publication number: CN214999406U
Application number: CN202121412146.9U
Authority: CN
Inventors: 刘建森
Original assignee: Anhui Anmi Mechanical Seal Co ltd
Current assignee: Anhui Anmi Mechanical Seal Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-03
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses a wave spring single-end-face mechanical seal, including the axis of rotation, the surface cover of axis of rotation is equipped with quiet ring, the surface of quiet ring is provided with first sealing washer, one side of quiet ring is provided with the rotating ring, the inboard of rotating ring is provided with the second sealing washer, one side of second sealing washer is provided with the throw-out collar, one side of throw-out collar is equipped with wave spring, one side of wave spring is equipped with the drive ring, the surface threaded connection of drive ring has locking screw, the seal groove has all been seted up to the contact jaw of quiet ring and rotating ring, the inside of seal groove is equipped with the third sealing washer. Through this design, under the effect of seal groove, third sealing washer, location connecting rod, positioning slot, solved the rotating ring dislocation and removed, brought the problem in the gap that produces between rotating ring and the quiet ring to and avoided the wearing and tearing of rotating ring and quiet ring with higher speed, influence mechanical seal's sealing performance, greatly reduced mechanical seal's life's problem.

Description

Single-end-face mechanical seal for wave spring

Technical Field

The utility model belongs to the technical field of mechanical seal, concretely relates to wave spring single-ended mechanical seal.

Background

The mechanical seal, namely the end face seal, has at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept jointed with the other end and relatively slide under the action of the fluid pressure and the elastic compensation force of the elastic element, so that the sealing effect is achieved. The mechanical seal has the advantages of reliable operation, long service life, small leakage, low power loss, small abrasion loss to the shaft and the like, is widely applied, has important practical significance for energy conservation and emission reduction, effectively reduces the phenomena of leakage, overflow, dripping and leakage, and has important effect on environmental protection.

However, when the rotating shaft is in radial runout, the wave spring moves radially along with the rotating shaft, so that the wave spring is bent radially, the acting force acting on the moving ring is uneven, the moving ring is inclined or dislocated slightly, and a gap generated by the dislocation movement of the moving ring enters a sealing surface between the moving ring and the static ring under the action of pressure of a particle medium between the rotating shaft and the installation inner cavity, so that the abrasion of the moving ring and the static ring is accelerated, the sealing performance of the mechanical seal is influenced, and the service life of the mechanical seal is greatly reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a wave spring single-ended mechanical seal has solved the rotating ring dislocation and has removed, brings the problem in the gap that produces between rotating ring and the quiet ring to the wearing and tearing of rotating ring and quiet ring influence mechanical seal's sealing performance with higher speed, greatly reduced mechanical seal's life's problem.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a single terminal surface mechanical seal of wave spring, includes the axis of rotation, the surface cover of axis of rotation is equipped with quiet ring, the surface of quiet ring is provided with first sealing washer, one side of quiet ring is provided with the rotating ring, the inboard of rotating ring is provided with the second sealing washer, one side of second sealing washer is provided with the throw-out collar, one side of throw-out collar is equipped with wave spring, one side of wave spring is equipped with the driving ring, the surface threaded connection of driving ring has locking screw, the seal groove has all been seted up to the contact jaw of quiet ring and rotating ring, the inside of seal groove is equipped with the third sealing washer, the inboard of quiet ring is fixed and is equipped with the location connecting rod, positioning slot has been seted up to the inboard of rotating ring.

As an optimized technical scheme of the utility model, the outside diameter width of push ring and wave spring's outside diameter width looks adaptation.

As a preferred technical scheme of the utility model, the location connecting rod is connected for the block with positioning slot, and the location connecting rod all is provided with threely with positioning slot, and location connecting rod and positioning slot are triangular distribution.

As a preferred technical scheme of the utility model, the cross section diameter of location connecting rod and positioning slot's inside diameter looks adaptation, the removal end surface of location connecting rod is equipped with wear-resisting packing ring.

As an optimal technical scheme of the utility model, the seal groove is the semicircle setting, first sealing washer, second sealing washer, third sealing washer are the fluororubber material and make.

As an optimal technical scheme of the utility model, the inside diameter of rotating ring and the outside diameter looks adaptation of driving ring, locking screw is threaded connection with the rotating ring.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

1. through this design, under the effect of seal groove, third sealing washer, location connecting rod, positioning slot, solved the rotating ring dislocation and removed, brought the problem in the gap that produces between rotating ring and the quiet ring to and avoided the wearing and tearing of rotating ring and quiet ring with higher speed, influence mechanical seal's sealing performance, greatly reduced mechanical seal's life's problem.

Drawings

Fig. 1 is a schematic sectional front view of the structure of the present invention;

fig. 2 is an enlarged view of the structure at a in fig. 1 according to the present invention;

fig. 3 is a schematic side view of fig. 1 according to the present invention.

Wherein: 1. a rotating shaft; 2. a stationary ring; 3. a moving ring; 4. a first seal ring; 5. a push ring; 6. a drive ring; 7. locking the screw; 8. a wave spring; 9. a second seal ring; 10. a sealing groove; 11. a third seal ring; 12. positioning the connecting rod; 13. and positioning the slot.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-3, a single-end-face mechanical seal for a wave spring, including a rotating shaft 1, a stationary ring 2 is sleeved on the outer surface of the rotating shaft 1, a first sealing ring 4 is arranged on the outer surface of the stationary ring 2, a movable ring 3 is arranged on one side of the stationary ring 2, a second sealing ring 9 is arranged on the inner side of the movable ring 3, a push ring 5 is arranged on one side of the second sealing ring 9, a wave spring 8 is arranged on one side of the push ring 5, a transmission ring 6 is arranged on one side of the wave spring 8, a locking screw 7 is connected to the outer surface of the transmission ring 6 through threads, a sealing groove 10 is respectively arranged at the contact ends of the stationary ring 2 and the movable ring 3, a third sealing ring 11 is arranged inside the sealing groove 10, a positioning connecting rod 12 is fixedly arranged on the inner side of the stationary ring 2, and a positioning slot 13 is arranged on the inner side of the movable ring 3

When the static ring 2 and the moving ring 3 are installed, the static ring 2 and the moving ring 3 are respectively sleeved on the outer surface of the rotating shaft 1, the third sealing ring 11 is placed in the sealing groove 10, the positioning is carried out through the positioning connecting rod 12 and the positioning slot 13, the positioning connecting rod 12 is inserted into the positioning slot 13, so that the static ring 2 is attached to the moving ring 3, and after the static ring 2 is attached to the moving ring 3, the static ring 2 and the moving ring 3 wrap the third sealing ring 11, the locking screw 7 is rotated to fix the moving ring 3 and the transmission ring 6, so that the limit of the wave spring 8 is realized, through the design, when the rotating shaft 1 rotates, the wave spring 8 radially jumps, the wave spring 8 radially moves along with the rotating shaft 1, so that the wave spring 8 radially bends, uneven acting force on the moving ring 3 is caused, and the moving ring 3 slightly inclines or moves in a wrong way, spacing through location connecting rod 12 and location slot 13, so that the torsion about quiet ring 2 and rotating ring 3 has been improved, thereby avoided quiet ring 2 and rotating ring 3 to take place to remove, and under the effect of third sealing washer 11, the leakproofness that quiet ring 2 and rotating ring 3 are connected has been improved, and, this design has solved the rotating ring 3 dislocation and has removed, bring the problem in the gap that produces between quiet ring 2 and the rotating ring 3, and avoided the wearing and tearing of quiet ring 2 and rotating ring 3 with higher speed, influence mechanical seal's sealing performance, greatly reduced mechanical seal's life's problem.

In other embodiments, the width of the outer diameter of the push ring 5 is adapted to the width of the outer diameter of the wave spring 8; so as to improve the stability of the wave spring 8 to push the push ring 5 and make the force applied on the push ring 5 uniform.

In other embodiments, the positioning connecting rods 12 and the positioning slots 13 are in snap-fit connection, three positioning connecting rods 12 and three positioning slots 13 are arranged, and the positioning connecting rods 12 and the positioning slots 13 are distributed in a triangular manner; through the triangular distribution of the positioning connecting rod 12 and the positioning slot 13, the left and right torsion of the static ring 2 and the dynamic ring 3 is improved, and the static ring 2 and the dynamic ring 3 are prevented from moving.

In other embodiments, the cross-sectional diameter of the positioning connecting rod 12 is matched with the inner diameter of the positioning slot 13, and the outer surface of the moving end of the positioning connecting rod 12 is provided with a wear-resistant gasket; the wear-resistant washer is arranged to protect the positioning connecting rod 12, so that direct friction between the positioning connecting rod 12 and the positioning inserting groove 13 is reduced.

In other embodiments, the sealing groove 10 is semicircular, and the first sealing ring 4, the second sealing ring 9 and the third sealing ring 11 are all made of fluororubber material; the semi-circle of the sealing groove 10 is arranged, so that the contact end of the static ring 2 and the moving ring 3 is completely clamped with the third sealing ring 11, and the sealing performance of the contact end of the static ring 2 and the moving ring 3 is improved.

In other embodiments, the inner diameter of the movable ring 3 is matched with the outer diameter of the transmission ring 6, and the locking screw 7 is in threaded connection with the movable ring 3; so that the driving ring 6 slides stably inside the moving ring 3, and the wave spring 8 is pressure-regulated by locking the screw 7 to fixedly connect the moving ring 3 with the driving ring 6.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a single-ended mechanical seal of wave spring, includes axis of rotation (1), its characterized in that: a static ring (2) is sleeved on the outer surface of the rotating shaft (1), a first sealing ring (4) is arranged on the outer surface of the static ring (2), a movable ring (3) is arranged on one side of the static ring (2), a second sealing ring (9) is arranged on the inner side of the movable ring (3), a push ring (5) is arranged on one side of the second sealing ring (9), a wave spring (8) is arranged on one side of the push ring (5), a transmission ring (6) is arranged on one side of the wave spring (8), the outer surface of the transmission ring (6) is connected with a locking screw (7) in a threaded manner, the contact ends of the static ring (2) and the dynamic ring (3) are both provided with a sealing groove (10), the inside of seal groove (10) is equipped with third sealing washer (11), the inboard of quiet ring (2) is fixed and is equipped with positioning connecting rod (12), positioning slot (13) have been seted up to the inboard of rotating ring (3).

2. The single-ended mechanical seal of a wave spring as claimed in claim 1, wherein: the outer diameter width of the push ring (5) is matched with the outer diameter width of the wave spring (8).

3. The single-ended mechanical seal of a wave spring as claimed in claim 1, wherein: the positioning connecting rod (12) is connected with the positioning slot (13) in a clamping mode, the positioning connecting rod (12) and the positioning slot (13) are arranged in a three-dimensional mode, and the positioning connecting rod (12) and the positioning slot (13) are distributed in a triangular mode.

4. The single-ended mechanical seal of a wave spring as claimed in claim 1, wherein: the cross section diameter of the positioning connecting rod (12) is matched with the inner diameter of the positioning slot (13), and a wear-resistant gasket is arranged on the outer surface of the moving end of the positioning connecting rod (12).

5. The single-ended mechanical seal of a wave spring as claimed in claim 1, wherein: the sealing groove (10) is arranged in a semicircular mode, and the first sealing ring (4), the second sealing ring (9) and the third sealing ring (11) are all made of fluororubber materials.

6. The single-ended mechanical seal of a wave spring as claimed in claim 1, wherein: the inside diameter of rotating ring (3) and the outside diameter looks adaptation of driving ring (6), locking screw (7) and rotating ring (3) are threaded connection.