Anti-blocking mechanical seal assembly

Abstract

The utility model provides an anti-blocking mechanical seal assembly, which relates to the technical field of mechanical seal and comprises a moving ring and a static ring, a first seal groove is arranged on the inner side wall of the moving ring, a second seal groove is arranged on the inner side wall of the static ring, a first combined seal ring is arranged in the first seal groove, and a second combined seal ring is arranged in the second seal groove. The first combined type sealing ring and the second combined type sealing ring are the same in structure and each comprise a positioning ring and a sealing rubber ring, a first magnetic attraction piece is arranged on the outer wall of each positioning ring, and second magnetic attraction pieces matched with the first magnetic attraction pieces are arranged on the inner wall of the first sealing groove and the inner wall of the second sealing groove. The first magnetic attraction pieces on the outer wall of the positioning ring can be stably attracted to the second magnetic attraction pieces in the first sealing groove and the second sealing groove, so that the installation stability of the first combined sealing ring and the second combined sealing ring is improved; and mechanical sealing blockage caused by falling of the first combined sealing ring and the second combined sealing ring can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field especially relates to a kind of anti-clogging mechanical seal assembly. BACKGROUND

[0002] Mechanical seal refers to by at least one pair of vertical rotation axis end face in the action of fluid pressure and compensation mechanism elastic force (or magnetic force) and the cooperation of auxiliary seal, the pair of end face keeps close and relative sliding, the device that prevents fluid leakage is formed.It is simply, it relies on static ring and dynamic ring two end face compression, under the spring pressure of fluid pressure and compensation mechanism, axial end face sealing is reached, to prevent fluid leakage.Static ring is the part that remains stationary in sealing, not with shaft rotation;Dynamic ring rotates with shaft together, and static ring forms sealing surface;Spring provides elastic force, so that static ring and dynamic ring keep close.

[0003] Generally, sealing ring is arranged on static ring and dynamic ring in mechanical seal for improving sealing property, but the installation firmness of sealing ring in sealing groove is low, and sealing ring is easy to separate from sealing groove, causing blockage, thereby affecting the normal sealing performance of mechanical seal.Therefore, the utility model provides a kind of anti-clogging mechanical seal assembly to solve the deficiencies in the prior art. UTILITY MODEL CONTENT

[0004] For the above problems, the utility model aims at providing a kind of anti-clogging mechanical seal assembly, first magnetic attraction piece on the outer wall of positioning ring can be stably adsorbed with second magnetic attraction piece inside first sealing groove and second sealing groove to realize the installation stability of first combined seal ring and second combined seal ring is improved, the installation stability of first combined seal ring and second combined seal ring can prevent first combined seal ring and second combined seal ring from falling off and causing mechanical seal blockage.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of anti-clogging mechanical seal assembly, including dynamic ring and static ring, the dynamic ring one end is equipped with sunken sealing end face, the static ring one end is equipped with protruding sealing end face, the protruding sealing end face is adapted with sunken sealing end face, the dynamic ring one end away from the sunken sealing end face is equipped with compensation assembly, the first sealing groove is equipped on the inner side wall of the dynamic ring, the second sealing groove is equipped on the inner side wall of the static ring, the first combined seal ring is equipped in the first sealing groove, the second combined seal ring is equipped in the second sealing groove;

[0007] The first combined sealing ring and the second combined sealing ring are structurally identical, and each comprises a positioning ring and a sealing rubber ring, the inner side of the positioning ring is provided with a sealing ring, the outer wall of the positioning ring is provided with a first magnetic attraction piece, the first magnetic attraction piece is provided with a plurality of groups, and the inner walls of the first sealing groove and the second sealing groove are provided with a second magnetic attraction piece matched with the first magnetic attraction piece.

[0008] Further improvement lies in that the compensation assembly comprises a mounting frame and a compensation spring, the mounting frame is mounted with the outer wall of one end of the moving ring through a fixing bolt, the mounting frame is internally provided with the compensation spring, and one end of the compensation spring is connected with one end of the moving ring.

[0009] Further improvement lies in that the outer wall of the positioning ring between the adjacent first magnetic attraction pieces is provided with a sealing hole, the outer walls of the moving ring and the static ring are each provided with a through hole, and the through hole is connected with the first sealing groove and the second sealing groove.

[0010] Further improvement lies in that the hollow sealing pipe is movably arranged in the through hole, the outer wall of the hollow sealing pipe is provided with a first hole structure and a second hole structure, and the second hole structure is located in the sealing hole after the one end of the hollow sealing pipe is connected with the sealing hole.

[0011] Further improvement lies in that the length of the hollow sealing pipe is equal to the length between the through hole and the sealing hole, and the thickness of the positioning ring is half of the thickness of the sealing rubber ring.

[0012] Further improvement lies in that the through hole is internally provided with a ring groove, and the position of the first hole structure on the hollow sealing pipe is matched with the position of the ring groove.

[0013] The first combined sealing ring and the second combined sealing ring are structurally identical, and each comprises a positioning ring and a sealing rubber ring, the inner side of the positioning ring is provided with a sealing ring, the outer wall of the positioning ring is provided with a first magnetic attraction piece, the first magnetic attraction piece is provided with a plurality of groups, and the inner walls of the first sealing groove and the second sealing groove are provided with a second magnetic attraction piece matched with the first magnetic attraction piece.

[0014] The first combined sealing ring and the second combined sealing ring are structurally identical, and each comprises a positioning ring and a sealing rubber ring, the inner side of the positioning ring is provided with a sealing ring, the outer wall of the positioning ring is provided with a first magnetic attraction piece, the first magnetic attraction piece is provided with a plurality of groups, and the inner walls of the first sealing groove and the second sealing groove are provided with a second magnetic attraction piece matched with the first magnetic attraction piece. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional split schematic view of the structure of the utility model.

[0016] Figure 2 It is a combined sealing ring and a second combined sealing ring structure perspective view of the utility model;

[0017] Figure 3 It is a through hole structure schematic view of the utility model;

[0018] Figure 4 It is a hollow sealing tube structure perspective view of the utility model;

[0019] Figure 5 It is a static ring internal second magnetic attraction piece structure cross-sectional view schematic view of the utility model;

[0020] Figure 6 It is a dynamic ring internal second magnetic attraction piece structure cross-sectional view schematic view of the utility model;

[0021] Figure 7 It is a static ring upper ring groove structure cross-sectional view schematic view of the utility model;

[0022] Figure 8 It is a dynamic ring upper ring groove structure cross-sectional view schematic view of the utility model.

[0023] Wherein: 1, dynamic ring; 2, static ring; 3, sinking sealing end surface; 4, convex sealing end surface; 5, first sealing groove; 6, second sealing groove; 7, first combined sealing ring; 8, second combined sealing ring; 9, positioning ring; 10, sealing rubber ring; 11, first magnetic attraction piece; 12, second magnetic attraction piece; 13, mounting frame; 14, compensation spring; 15, fixing bolt; 16, sealing hole; 17, through hole; 18, hollow sealing tube; 19, first hole structure; 20, second hole structure; 21, ring groove. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the utility model, the utility model will be further described in the following embodiment, and the embodiment is only used to explain the utility model, and does not constitute the limitation of the protection scope of the utility model.

[0025] According to Figures 1-8As shown, the embodiment provides an anti-clogging mechanical seal assembly, which comprises a dynamic ring 1 and a static ring 2, the dynamic ring 1 is provided with a sunken sealing end face 3 at one end, the static ring 2 is provided with a convex sealing end face 4 at one end, the convex sealing end face 4 is matched with the sunken sealing end face 3, the dynamic ring 1 is provided with a compensation assembly at one end away from the sunken sealing end face 3, the inner side wall of the dynamic ring 1 is provided with a first sealing groove 5, the inner side wall of the static ring 2 is provided with a second sealing groove 6, the first sealing groove 5 is provided with a first combined sealing ring 7, and the second sealing groove 6 is provided with a second combined sealing ring 8; the first combined sealing ring 7 and the second combined sealing ring 8 are the same in structure and each comprises a positioning ring 9 and a sealing rubber ring 10, the inner side of the positioning ring 9 is provided with the sealing rubber ring, the outer wall of the positioning ring 9 is provided with a first magnetic suction piece 11, the first magnetic suction piece 11 is provided with a plurality of groups, and the inner wall of the first sealing groove 5 and the second sealing groove 6 is provided with a second magnetic suction piece 12 matched with the first magnetic suction piece 11.

[0026] When the anti-clogging mechanical seal assembly seals, the sunken sealing end face 3 at one end of the dynamic ring 1 is in alignment with the convex sealing end face 4 on the static ring 2, and the compensation assembly provides elastic force in the sealing process, so that the static ring and the dynamic ring are kept closely attached. When the first combined sealing ring 7 and the second combined sealing ring 8 are installed, the first magnetic suction piece 11 on the outer wall of the positioning ring 9 is magnetically attracted and fixed with the second magnetic suction piece 12 on the inner wall of the first sealing groove 5 and the second sealing groove 6.

[0027] The compensation assembly comprises a mounting frame 13 and a compensation spring 14, the mounting frame 13 is mounted with the outer wall of one end of the dynamic ring 1 through a fixing bolt 15, the mounting frame 13 is internally provided with the compensation spring 14, and one end of the compensation spring 14 is connected with one end of the dynamic ring 1.

[0028] The outer wall of the positioning ring 9 between the adjacent first magnetic attraction pieces 11 is provided with a sealing hole 16, the outer wall of the movable ring 1 and the static ring 2 is provided with a through hole 17, the through hole 17 is connected with the first sealing groove 5 and the second sealing groove 6. A hollow sealing pipe 18 is movably arranged in the through hole 17, the outer wall of the hollow sealing pipe 18 is provided with a first hole structure 19 and a second hole structure 20, and the second hole structure 20 is located inside the sealing hole 16 after the one end of the hollow sealing pipe 18 is connected with the sealing hole 16. The length of the hollow sealing pipe 18 is equal to the length between the through hole 17 and the sealing hole 16, and the thickness of the positioning ring 9 is half of the thickness of the sealing rubber ring 10. The inner portion of the through hole 17 is provided with a ring groove 21, and the position of the first hole structure 19 on the hollow sealing pipe 18 is matched with the position of the ring groove 21. After the first combined sealing ring 7 and the second combined sealing ring 8 are respectively installed into the first sealing groove 5 and the second sealing groove 6, the hollow sealing pipe 18 is inserted from the through hole 17, so that one end of the hollow sealing pipe 18 is inserted into the sealing hole 16, at this time, the sealing agent can flow into the sealing hole 16 and the through hole 17 from the first hole structure 19 and the second hole structure 20 respectively by filling the sealing agent into the hollow sealing pipe 18, and the sealing agent can be further bonded and reinforced at the ring groove 21.

[0029] The first combined sealing ring 7 and the second combined sealing ring 8 are arranged in the first sealing groove 5 and the second sealing groove 6 respectively, and are arranged to be composed of the positioning ring 9 and the sealing rubber ring 10, the first magnetic attraction piece 11 on the outer wall of the positioning ring 9 is stably adsorbed with the second magnetic attraction piece 12 in the first sealing groove 5 and the second sealing groove 6, so that the installation stability of the first combined sealing ring 7 and the second combined sealing ring 8 is improved, and the installation stability of the first combined sealing ring 7 and the second combined sealing ring 8 can prevent the first combined sealing ring 7 and the second combined sealing ring 8 from falling off and causing the mechanical seal to be blocked.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A choke resistant mechanical seal assembly characterized by: The application relates to a sealing device for a valve, which comprises a movable ring (1) and a static ring (2), wherein one end of the movable ring (1) is provided with a sunken sealing end face (3), one end of the static ring (2) is provided with a convex sealing end face (4), the convex sealing end face (4) is matched with the sunken sealing end face (3), one end of the movable ring (1) away from the sunken sealing end face (3) is provided with a compensation assembly, a first sealing groove (5) is arranged on the inner side wall of the movable ring (1), a second sealing groove (6) is arranged on the inner side wall of the static ring (2), a first combined sealing ring (7) is arranged in the first sealing groove (5), and a second combined sealing ring (8) is arranged in the second sealing groove (6). The first combined sealing ring (7) and the second combined sealing ring (8) are the same in structure and each comprises a positioning ring (9) and a sealing rubber ring (10), the inner side of the positioning ring (9) is provided with a sealing ring, a first magnetic attraction piece (11) is arranged on the outer wall of the positioning ring (9), a plurality of groups of the first magnetic attraction piece (11) are arranged, and a second magnetic attraction piece (12) matched with the first magnetic attraction piece (11) is arranged on the inner wall of the first sealing groove (5) and the second sealing groove (6).

2. An anti-stalling mechanical seal assembly according to claim 1, wherein: The compensation assembly comprises a mounting frame (13) and a compensation spring (14), the mounting frame (13) is mounted on the outer wall of one end of the movable ring (1) through a fixing bolt (15), the mounting frame (13) is internally provided with the compensation spring (14), and one end of the compensation spring (14) is connected with one end of the movable ring (1).

3. An anti-stalling mechanical seal assembly according to claim 1, wherein: A sealing hole (16) is arranged on the outer wall of the positioning ring (9) between the adjacent first magnetic attraction pieces (11), through holes (17) are arranged on the outer walls of the movable ring (1) and the static ring (2), and the through holes (17) are connected with the first sealing groove (5) and the second sealing groove (6).

4. An anti-stalling mechanical seal assembly according to claim 3, wherein: A hollow sealing pipe (18) is movably arranged in the through hole (17), a first hole structure (19) and a second hole structure (20) are arranged on the outer wall of the hollow sealing pipe (18), and the second hole structure (20) is located in the sealing hole (16) after the one end of the hollow sealing pipe (18) is connected with the sealing hole (16).

5. An anti-stalling mechanical seal assembly according to claim 4, wherein: The length of the hollow sealing pipe (18) is equal to the length between the through hole (17) and the sealing hole (16), and the thickness of the positioning ring (9) is half of the thickness of the sealing rubber ring (10).

6. An anti-stalling mechanical seal assembly according to claim 5, wherein: A ring groove (21) is arranged in the through hole (17), and the position of the first hole structure (19) on the hollow sealing pipe (18) is matched with the position of the ring groove (21).

Images