CN220956796U - Self-compensating wear-resistant sealing structure - Google Patents

Abstract

The application relates to a self-compensating wear-resistant sealing structure, and relates to the technical field of sealing structures. The sealing device comprises an end body, a retaining ring, a stationary ring and a moving ring, wherein the end body is provided with a ring groove, the retaining ring is installed in the ring groove, the stationary ring is installed on the end wall of the retaining ring, the moving ring abuts against the end wall of the stationary ring, and a sealing assembly is arranged between the moving ring and the stationary ring. The application has the effect of improving the tightness between the movable ring and the static ring.

Description

Self-compensating wear-resistant sealing structure

Technical Field

The application relates to the field of sealing structures, in particular to a self-compensating wear-resistant sealing structure.

Background

The mechanical industry refers to the industrial sector of producing mechanical products, which is generally understood to be broadly and narrowly defined, due to the range of "mechanical products". The broad mechanical industries include agricultural machinery manufacturing industries, industrial equipment manufacturing industries, transportation equipment manufacturing industries, construction and road construction machinery manufacturing industries, other machinery manufacturing industries for production and metal product manufacturing industries, household machinery manufacturing industries, electronics industries, household metal product industries, metal product repair industries, etc.; and as the mechanical industry has evolved, many mechanical devices are widely used in the mechanical industry.

For some mechanical devices, gas or liquid flows through the mechanical device, and sealing needs to be performed at each connecting piece to prevent the gas or liquid from leaking from the connecting gap of the connecting piece. Common sealing modes mainly comprise a packing seal, a mechanical seal, an oil seal, a power seal, a spiral seal and the like.

And wherein the mechanical seal (MECHANICAL SEAL) refers to a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the pair of end faces keep fit and relatively slide under the action of fluid pressure and the elasticity (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal.

The mechanical seal is always composed of two major parts, a rotating part and a stationary part, which are kept in relative motion to form a sealing surface on the surface of the stationary part. However, the surface of the static part is easy to wear due to the relative movement of the rotating part and the static part for a long time, and the surface of the static part cannot be kept close to the surface of the rotating part gradually after being worn, so that the mechanical seal fails.

Disclosure of utility model

In order to solve the problem that the sealing performance is easy to lose efficacy, the application provides a self-compensating wear-resistant sealing structure.

The self-compensating wear-resistant sealing structure provided by the application adopts the following technical scheme:

The self-compensating wear-resistant sealing structure comprises an end body, a retaining ring, a static ring and a moving ring, wherein an annular groove is formed in the end body, the retaining ring is installed in the annular groove, the static ring is installed on the end wall of the retaining ring, the moving ring is abutted against the end wall of the static ring, and a sealing assembly is arranged between the moving ring and the static ring;

The seal assembly includes: the sealing device comprises a sealing part, a replacement part and a pushing part, wherein the sealing part is arranged between the movable ring and the static ring, the replacement part is arranged between the sealing part and the static ring, and the pushing part is arranged between the end body and the replacement part.

By adopting the technical scheme, the sealing part can improve the sealing property between the movable ring and the static ring, and even if the static ring is worn, the sealing property between the movable ring and the static ring is not easily affected, so that fluid or liquid is not easily leaked; if the sealing part is worn, the pushing part feeds air to the sealing part so as to ensure that the sealing part can continuously maintain the tightness between the movable ring and the static ring, and the situation that fluid or liquid is leaked is difficult to occur.

Optionally, the sealing part includes: the sealing device comprises an expansion bag and a sealing sleeve, wherein the end wall of the movable ring is provided with a sealing groove, the replacement part is arranged on the static ring, the expansion bag is arranged in the sealing groove, the expansion bag is fixedly connected with the replacement part, the sealing sleeve is fixedly sleeved on the expansion bag, and the sealing sleeve is tightly attached to the inner wall of the sealing groove.

By adopting the technical scheme, the sealing sleeve can improve the tightness between the movable ring and the static ring, and the tightness between the movable ring and the static ring is not easy to influence even after the static ring is worn.

Optionally, the replacing part includes: the device comprises a bearing plate, an iron rod and a magnetic block, wherein an accommodating hole is formed in the end wall of the stationary ring, an inserting hole is formed in the bottom of the accommodating hole, the bearing plate is arranged in the accommodating hole, the expansion bag is fixed on the bearing plate, the magnetic block is fixed in the inserting hole, one end of the iron rod is fixed with the bearing plate, the other end of the iron rod is arranged in the inserting hole and is magnetically attracted with the magnetic block, and the pushing part is arranged between the end body and the bearing plate.

Through adopting above-mentioned technical scheme, after the seal cover wearing and tearing to unable use, can take out the accepting board from the holding hole, the iron pole will also be separated from inserting the hole this moment, then can tear the expansion bag from accepting the board to change the seal cover.

Optionally, the pushing part includes: the device comprises a squeezing plate, a pushing plate, a connecting rod, a rubber sleeve and a pushing spring, wherein a communication hole is formed in the bearing plate in a penetrating mode, an air inlet hole communicated with the communication hole is formed in the expansion bag in a penetrating mode, the squeezing plate is arranged in the communication hole, the rubber sleeve is arranged on the squeezing plate and abuts against the inner wall of the communication hole, the pushing plate is slidably connected in the annular groove, one end of the connecting rod is fixed with the pushing plate, the other end of the connecting rod is fixed with the squeezing plate, and the pushing spring is fixed between the pushing plate and the inner wall of the annular groove.

By adopting the technical scheme, once the sealing sleeve is worn, the pushing spring pushes the pushing plate to approach the sealing groove, and the extruding plate also approaches the sealing groove due to the arrangement of the connecting rod; in the process of moving the extrusion plate, air is extruded into the expansion bag, and the expansion bag is expanded at the moment, so that the sealing sleeve is expanded and is continuously tightly attached to the inner wall of the sealing groove, and the tightness between the movable ring and the static ring is maintained.

Optionally, the moving ring is provided with a lubrication assembly for lubricating the sealing sleeve.

Through adopting above-mentioned technical scheme, lubrication assembly can smear lubricating oil to the seal cover to reduce the frictional force between seal cover and the seal groove inner wall, in order to prolong the life of seal cover.

Optionally, the lubrication assembly includes: a lubrication portion, the lubrication portion comprising: the sealing device comprises a sealing sleeve, a sealing groove, a lubricating sponge, an oil filling hole and a movable ring, wherein the sealing sleeve is arranged in the sealing sleeve, and the sealing sleeve is arranged in the sealing sleeve.

Through adopting above-mentioned technical scheme, utilize the oil filler point, can regularly pour into lubricating oil with the oil filler point into on the lubricating sponge of lubricating oil in can flowing into the mounting groove to the lubricating sponge can absorb lubricating oil, then the lubricating sponge can smear lubricating oil to the seal cover, thereby reduces the frictional force between seal cover and the seal groove inner wall, in order to prolong the life of seal cover.

Optionally, a sealing plug is arranged in the oil filling hole in an interference manner.

Through adopting above-mentioned technical scheme, the sealing plug can be to the oil filler point shutoff, makes outside dust be difficult for the oil filler point on the one hand, and on the other hand is difficult for being thrown away by the lubricating oil on the lubrication sponge at the rotatory in-process of rotating the ring.

Optionally, the lubrication assembly further comprises: an adjusting portion including: the anti-leakage device comprises a valve plate, a connecting plate, bolts, an anti-leakage sleeve and an adjusting rod, wherein the valve plate is arranged in an oil filling hole, the anti-leakage sleeve is fixedly sleeved on the side wall of the valve plate and is abutted against the inner wall of the oil filling hole, one end of the adjusting rod is fixedly connected with the valve plate, the other end of the adjusting rod penetrates through the moving ring to extend outwards, the connecting plate is fixedly sleeved on the adjusting rod, and the connecting plate is fixedly connected to the moving ring through the bolts.

By adopting the technical scheme, the lubricating oil can be stored into the oil filling hole by utilizing the oil filling hole, then the bolts can be taken down from the movable ring at regular intervals, then the connecting plate is rotated, namely the adjusting rod is rotated, and the adjusting rod can drive the valve plate to overturn, so that a gap is generated between the valve plate and the inner wall of the oil filling hole; at this time, the lubricating oil flows into the placement groove to soak the lubricating sponge, and the lubricating oil is not required to be taken out and injected.

In summary, the present application includes at least one of the following beneficial effects:

1. The sealing part can improve the sealing property between the movable ring and the static ring, and even if the static ring is worn, the sealing property between the movable ring and the static ring is not easily affected, so that fluid or liquid is not easily leaked; if the sealing part is worn, the pushing part feeds air to the sealing part so as to ensure that the sealing part can continuously maintain the tightness between the movable ring and the static ring, and the situation that fluid or liquid is leaked is difficult to occur.

2. The lubrication assembly is capable of applying lubrication oil to the seal cartridge to reduce friction between the seal cartridge and the seal cartridge inner wall to extend the life of the seal cartridge.

3. The sealing plug can be used for plugging the oil filling hole, so that external dust is not easy to fill the oil filling hole on one hand, and lubricating oil on the lubricating sponge is not easy to be thrown out in the rotating process of the movable ring on the other hand.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present application;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a partial enlarged view of a portion B in fig. 1.

In the figure: 1. an end body; 11. a ring groove; 2. a retaining ring; 3. a stationary ring; 31. an accommodation hole; 32. inserting holes; 4. a moving ring; 41. sealing grooves; 42. a placement groove; 43. an oil filling hole; 431. a sealing plug; 5. a sealing part; 51. an expansion bag; 511. an air inlet hole; 52. sealing sleeve; 6. a replacement part; 61. a receiving plate; 611. a communication hole; 62. an iron rod; 63. a magnetic block; 7. a pushing part; 71. an extrusion plate; 72. a pushing plate; 73. a connecting rod; 74. a rubber sleeve; 75. a pushing spring; 8. a lubrication unit; 81. a lubricating sponge; 9. an adjusting section; 91. a valve plate; 92. a connecting plate; 93. a bolt; 94. a leakage preventing sleeve; 95. and (5) adjusting the rod.

Detailed Description

The application is described in further detail below with reference to fig. 1-3.

The embodiment of the application discloses a self-compensating wear-resistant sealing structure.

Referring to fig. 1, a self-compensating wear-resistant seal structure comprising: the end body 1, the retaining ring 2, the stationary ring 3 and the moving ring 4, an annular groove 11 is formed in one end of the end body 1, the annular groove 11 is annular, and the retaining ring 2 is installed in the annular groove 11. The stationary ring 3 is arranged on the end wall of the end, far away from the bottom of the annular groove 11, of the retaining ring 2, the movable ring 4 abuts against the end wall of the end, far away from the retaining ring 2, of the stationary ring 3, and the movable ring 4 can rotate.

Referring to fig. 2, a sealing assembly is provided between the moving ring 4 and the stationary ring 3, the sealing assembly including: sealing portion 5, change portion 6 and pushing portion 7, sealing portion 5 set up between moving ring 4 and quiet ring 3, and sealing portion 5 can improve the leakproofness between moving ring 4 and the quiet ring 3, even still the quiet ring 3 takes place wearing and tearing, also be difficult for influencing the leakproofness between moving ring 4 and the quiet ring 3 to be difficult for leaking fluid or liquid.

Referring to fig. 2, the replacement part 6 is disposed between the sealing part 5 and the stationary ring 3, the pushing part 7 is disposed between the end body 1 and the replacement part 6, and if the sealing part 5 wears, the pushing part 7 will feed air to the sealing part 5 to ensure that the sealing part 5 can continuously maintain the tightness between the moving ring 4 and the stationary ring 3, so that fluid or liquid leakage is unlikely to occur; if the seal 5 is no longer usable, the replacement part 6 may be removed from the stationary ring 3, and the seal 5 may be removed from the replacement part 6 to replace the stationary ring 3 with the replacement of the seal 5, thereby reducing the cost to some extent.

Referring to fig. 2, the sealing part 5 includes: the end wall of the movable ring 4, which is close to the stationary ring 3, is provided with an annular sealing groove 41, and an expansion bag 51 and a sealing sleeve 52. The replacing part 6 is arranged on the static ring 3, the expansion bag 51 is arranged in the sealing groove 41, and the expansion bag 51 is fixedly connected with the replacing part 6, and in the embodiment of the application, the expansion bag 51 is made of latex materials. The sealing sleeve 52 is fixedly sleeved on the expansion bag 51, the sealing sleeve 52 is tightly adhered to the inner wall of the sealing groove 41, in the embodiment of the application, the sealing sleeve 52 is made of rubber materials, the sealing property between the movable ring 4 and the static ring 3 can be improved by the sealing sleeve 52, and the sealing property between the movable ring 4 and the static ring 3 is not easily affected even if the static ring 3 is worn.

Referring to fig. 2, the exchanging part 6 includes: the bearing plate 61, the iron rods 62 and the magnetic blocks 63, wherein the end wall of the stationary ring 3, which is close to the movable ring 4, is provided with a containing hole 31, the bottom of the containing hole 31 is provided with inserting holes 32, and in the embodiment of the application, the number of the inserting holes 32 is two, and the number of the iron rods 62 is also two and corresponds to one another. The receiving plate 61 is disposed in the receiving hole 31, and the expansion bag 51 is adhesively fixed to the side wall of the receiving plate 61. The magnetic block 63 is fixed at the bottom of the insertion hole 32, one end of the iron rod 62 is fixed with one side of the receiving plate 61 away from the expansion bag 51, the other end is arranged in the insertion hole 32 and magnetically attracts the magnetic block 63, and the magnetic block 63 is utilized to magnetically attract the iron rod 62, so that the stability of the receiving plate 61 inserted in the accommodating hole 31 can be improved.

After the seal cartridge 52 is worn out to be unusable, the receiving plate 61 can be removed from the receiving hole 31, and the iron rod 62 will also be separated from the insertion hole 32, and then the expansion bag 51 can be torn off from the receiving plate 61 to replace the seal cartridge 52.

Referring to fig. 2, the pushing part 7 includes: the extruding plate 71, the pushing plate 72, the connecting rod 73, the rubber sleeve 74 and the pushing spring 75, the side wall of the stationary ring 3 is provided with an annular communication hole 611 in a penetrating manner, one end of the expansion bag 51 connected with the bearing plate 61 is provided with an annular air inlet 511 in a penetrating manner, and the air inlet 511 is communicated with the communication hole 611. The extrusion plate 71 is disposed in the communication hole 611 and moves along the axial direction of the stationary ring 3, the rubber sleeve 74 is fixedly sleeved on the peripheral wall of the extrusion plate 71, the rubber sleeve 74 abuts against the inner wall of the communication hole 611, and the rubber sleeve 74 can improve the tightness between the extrusion plate 71 and the inner wall of the communication hole 611.

Referring to fig. 2, the push plate 72 is slidably connected in the ring groove 11 and slides along the axial direction of the end body 1, one end of the connecting rod 73 is fixed to the push plate 72, the other end of the connecting rod 73 penetrates into the communication hole 611 to be fixed to the extrusion plate 71, and when the push plate 72 moves, the extrusion plate 71 also moves due to the arrangement of the connecting rod 73. One end of the pushing spring 75 is fixed with the groove bottom of the annular groove 11, the other end is fixed with one side of the pushing plate 72 away from the connecting rod 73, the pushing spring 75 is used for pushing the pushing plate 72 towards the sealing groove 41, and the pushing spring 75 is placed in the annular groove 11 in a compressed state. Once the sealing sleeve 52 is worn, the pushing spring 75 pushes the pushing plate 72 to approach the sealing groove 41, and the pressing plate 71 also approaches the sealing groove 41 due to the connecting rod 73; during the movement of the extrusion plate 71, air is extruded into the expansion bag 51, and at this time, the expansion bag 51 expands, so that the sealing sleeve 52 is expanded to be continuously abutted against the inner wall of the sealing groove 41, so as to maintain the tightness between the moving ring 4 and the stationary ring 3.

Referring to fig. 3, further, the moving ring 4 is provided with a lubrication assembly for lubricating the sealing sleeve 52, the lubrication assembly comprising: lubrication portion 8.

Referring to fig. 3, the lubrication portion 8 includes: a mounting groove 42 is formed in the groove bottom of the sealing groove 41 of the lubricating sponge 81, the lubricating sponge 81 is fixed in the mounting groove 42, and the lubricating sponge 81 is in contact with the sealing sleeve 52. The oil filler hole 43 has been seted up to the lateral wall of moving ring 4, and oil filler hole 43 is linked together with the mounting groove 42, utilizes oil filler hole 43, can regularly pour into lubricating oil with oil filler hole 43, and lubricating oil can flow into on the lubrication sponge 81 in the mounting groove 42 to lubrication sponge 81 can absorb lubricating oil, then lubrication sponge 81 can smear lubricating oil to seal cartridge 52 to reduce the frictional force between seal cartridge 52 and the seal cartridge 41 inner wall, in order to prolong seal cartridge 52's life.

Referring to fig. 3, a sealing plug 431 is disposed at an opening of the oil filling hole 43 in an interference manner, and the sealing plug 431 can seal the oil filling hole 43, so that external dust is not easy to fill the oil filling hole 43 on one hand, and lubricating oil on the lubricating sponge 81 is not easy to be thrown out in the rotating process of the moving ring 4 on the other hand.

Referring to fig. 3, the lubrication portion 8 further includes: an adjusting section 9, the adjusting section 9 including: the valve plate 91, the connecting plate 92, the bolt 93, the leakage preventing sleeve 94 and the adjusting rod 95, the valve plate 91 is arranged at the oil filling hole 43, and the valve plate 91 can control the opening or closing of the oil filling hole 43. The leakage preventing sleeve 94 is fixedly sleeved on the peripheral wall of the valve plate 91, and the leakage preventing sleeve 94 abuts against the inner wall of the oil filling hole 43, in the embodiment of the application, the leakage preventing sleeve 94 is made of rubber materials, and the leakage preventing sleeve 94 can improve the sealing performance between the valve plate 91 and the inner wall of the oil filling hole 43.

Referring to fig. 3, one end of the adjustment lever 95 is fixed to the valve plate 91, and the other end extends outward through the moving ring 4. One end of the connecting plate 92 is fixedly sleeved at one end of the adjusting rod 95 far away from the valve plate 91, and the other end is fixed on the movable ring 4 through a bolt 93. By utilizing the oil filling hole 43, lubricating oil can be stored in the oil filling hole 43, then the bolt 93 can be regularly removed from the movable ring 4, then the connecting plate 92 is rotated, namely the adjusting rod 95 is rotated, and the adjusting rod 95 can drive the valve plate 91 to overturn, so that a gap is generated between the valve plate 91 and the inner wall of the oil filling hole 43; at this time, the lubricating oil will flow into the seating groove 42 to wet the lubricating sponge 81 without taking the lubricating oil additionally at regular intervals and then injecting it.

The implementation principle of the self-compensating wear-resistant sealing structure provided by the embodiment of the application is as follows: once the sealing sleeve 52 is worn, the pushing spring 75 pushes the pushing plate 72 to approach the sealing groove 41, and the pressing plate 71 also approaches the sealing groove 41 due to the connecting rod 73; during the movement of the extrusion plate 71, air is extruded into the expansion bag 51, and at this time, the expansion bag 51 expands, so that the sealing sleeve 52 is expanded to be continuously abutted against the inner wall of the sealing groove 41, so as to maintain the tightness between the moving ring 4 and the stationary ring 3.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. The self-compensating wear-resistant sealing structure is characterized by comprising an end body (1), a retaining ring (2), a stationary ring (3) and a movable ring (4), wherein an annular groove (11) is formed in the end body (1), the retaining ring (2) is installed in the annular groove (11), the stationary ring (3) is installed on the end wall of the retaining ring (2), the movable ring (4) is abutted against the end wall of the stationary ring (3), and a sealing component is arranged between the movable ring (4) and the stationary ring (3);

The seal assembly includes: sealing portion (5), change portion (6) and promote portion (7), sealing portion (5) set up in moving ring (4) with between quiet ring (3), change portion (6) set up in sealing portion (5) with between quiet ring (3), promote portion (7) set up in between terminal body (1) with change portion (6).

2. Self-compensating wear-resistant sealing arrangement according to claim 1, characterized in that the sealing part (5) comprises: expansion bag (51) and seal cover (52), seal groove (41) have been seted up to the end wall of rotating ring (4), change portion (6) set up in on quiet ring (3), expansion bag (51) set up in seal groove (41), just expansion bag (51) with change portion (6) fixed connection, seal cover (52) are fixed to be overlapped and are located on expansion bag (51), just seal cover (52) with the inner wall of seal groove (41) pastes tightly mutually.

3. Self-compensating wear-resistant sealing arrangement according to claim 2, characterized in that the replacement part (6) comprises: the device comprises a bearing plate (61), an iron rod (62) and a magnetic block (63), wherein a containing hole (31) is formed in the end wall of the stationary ring (3), an inserting hole (32) is formed in the bottom of the containing hole (31), the bearing plate (61) is arranged in the containing hole (31), the expansion bag (51) is fixed on the bearing plate (61), the magnetic block (63) is fixed in the inserting hole (32), one end of the iron rod (62) is fixed with the bearing plate (61), the other end of the iron rod is arranged in the inserting hole (32) and magnetically attracts the magnetic block (63), and the pushing part (7) is arranged between the end body (1) and the bearing plate (61).

4. A self-compensating wear-resistant sealing arrangement according to claim 3, wherein the pushing part (7) comprises: the device comprises a squeezing plate (71), a pushing plate (72), a connecting rod (73), a rubber sleeve (74) and a pushing spring (75), wherein a communication hole (611) is formed in the supporting plate (61) in a penetrating mode, an air inlet hole (511) communicated with the communication hole (611) is formed in the expansion bag (51) in a penetrating mode, the squeezing plate (71) is arranged in the communication hole (611), the rubber sleeve (74) is sleeved on the squeezing plate (71) and abuts against the inner wall of the communication hole (611), the pushing plate (72) is slidably connected in the annular groove (11), one end of the connecting rod (73) is fixed with the pushing plate (72), the other end of the connecting rod is fixed with the squeezing plate (71), and the pushing spring (75) is fixed between the pushing plate (72) and the inner wall of the annular groove (11).

5. Self-compensating wear-resistant sealing arrangement according to claim 2, characterized in that the moving ring (4) is provided with a lubrication assembly for lubricating the sealing sleeve (52).

6. The self-compensating wear seal in accordance with claim 5, wherein the lubrication assembly comprises: -a lubrication portion (8), the lubrication portion (8) comprising: the lubricating sponge (81), the mounting groove (42) has been seted up to the tank bottom of seal groove (41), lubricating sponge (81) be fixed in mounting groove (42) and with seal cover (52) contact, set up on moving ring (4) with oil filler point (43) of mounting groove (42) intercommunication.

7. The self-compensating wear-resistant sealing structure according to claim 6, wherein a sealing plug (431) is provided in the oil filler hole (43) in an interference manner.

8. The self-compensating wear seal in accordance with claim 7, wherein the lubrication assembly further comprises: an adjustment section (9), the adjustment section (9) comprising: valve plate (91), connecting plate (92), bolt (93), leak protection cover (94) and regulation pole (95), valve plate (91) set up in oil filler point (43), leak protection cover (94) fixed cover is located on the lateral wall of valve plate (91) and with oil filler point (43) inner wall offsets tightly, the one end of adjusting pole (95) with the valve plate is fixed, the other end runs through moving ring (4) outwards stretches out, connecting plate (92) fixed cover is located on adjusting lever (95), just connecting plate (92) are fixed in on moving ring (4) through bolt (93).