CN220523504U - Internal expansion type rubber sealing ring - Google Patents

Abstract

The utility model discloses an internal expansion type rubber sealing ring, which comprises two groups of connected pipe bodies, wherein a rubber sealing belt ring crossing an end surface joint is matched between the two groups of pipe bodies, two groups of arc grooves symmetrical with each other about an axis are formed in the rubber sealing belt ring, through grooves communicated with two ends of the arc grooves are formed in the rubber sealing belt ring, arc steel bars are matched in the arc grooves, two ends of each arc steel bar are integrally connected with a first flat steel bar extending out of the through groove, and a tensioning assembly for adjusting the radian of the curved surface of each steel bar is arranged between the two groups of steel bar structures, so that the extrusion force of the rubber sealing belt ring on the inner wall of the pipe is adjusted. According to the utility model, under the linkage action of the connecting rods, the first flat steel bars at two sides are pushed to move outwards, and the rubber sealing belt rings at the cambered surfaces at two sides of the arc steel bars are extruded, so that the problem that gaps exist at the cambered surfaces at two sides of the arc steel bars due to smaller compression of the rubber sealing belt rings is avoided.

Description

Internal expansion type rubber sealing ring

Technical Field

The utility model relates to the technical field of sealing rings, in particular to an internal expansion type rubber sealing ring.

Background

The sealing ring is also called O-shaped sealing ring, and is a fitting for sealing, and mainly comprises a V-shaped sealing ring, a U-shaped sealing ring, an O-shaped sealing ring, a rectangular sealing ring, a Y-shaped sealing ring, a YX-shaped sealing ring for holes, a check ring for YX-shaped holes, a YX-shaped check ring for shafts, a YX-shaped sealing ring for shafts and the like.

The Chinese patent publication No. CN214534443U discloses an internal expansion rubber sealing ring, which enhances the extrusion force between the sealing ring and the pipe body by arranging two groups of extrusion strips. However, the extrusion strip can only locally strengthen the pressure of the sealing ring, the extrusion force received by other parts of the sealing ring except the local enhancement is smaller, the gap between the sealing ring and the pipe body can not be completely filled, and the sealing effect is poor.

Disclosure of Invention

The utility model aims at: in order to solve the technical problems mentioned in the background art, an internal expansion type rubber sealing ring is provided.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an internal expanding rubber seal, includes two sets of body that are connected, and the cooperation has the rubber seal area circle of crossing the terminal surface seam between two sets of body, two sets of arc grooves about axis symmetry have been seted up to the rubber seal area circle inside, and set up the logical groove with arc groove both ends intercommunication on the rubber seal area circle, the cooperation is provided with the arc billet in the arc groove, arc billet both ends integrated into one piece has the first dull and stereotyped billet that stretches out logical groove, is provided with the tensioning assembly who adjusts billet arc billet curved surface radian between two sets of billet structures, and then adjusts the extrusion force size of rubber seal area circle to the body inner wall.

As a further description of the above technical solution:

the tensioning assembly comprises a second flat steel bar arranged on the outer side of the first flat steel bar, a limiting pin is fixedly connected to the second flat steel bar, the limiting pin penetrates through a sliding groove on the first flat steel bar, two groups of studs with different screw threads are fixedly connected to the middle parts of opposite faces of the two groups of second flat steel bars, and screw sleeves are connected between the two groups of studs in a screwing mode.

As a further description of the above technical solution:

and a plurality of groups of hexagonal countersunk holes are distributed on the peripheral surface of the threaded sleeve close to the two ends in an array manner.

As a further description of the above technical solution:

the fixed cover in swivel nut both ends is equipped with the connecting plate, rotates between two sets of connecting plates and is connected with the second pivot, fixed cover is equipped with two sets of parallel arrangement's connecting rod in the second pivot, the one end that keeps away from the spout on the first flat steel strip rotates and is connected with first pivot, the fixed cover of connecting rod is established in the first pivot rather than being close to.

As a further description of the above technical solution:

the two groups of connecting plates are arranged between the hexagonal countersunk holes at the two ends.

As a further description of the above technical solution:

the two groups of connected pipe bodies comprise a first pipe body and a second pipe body, and the two groups of pipes are connected through connecting rings in a threaded mode.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. according to the utility model, the screw sleeve is rotated anticlockwise, on one hand, according to the screw transmission principle, the two groups of studs are driven to move in the direction of being far away from each other, the second flat steel bars are driven to be far away from each other, under the connection effect of the limiting pin, the two groups of arc steel bars and the first flat steel bars are driven to move towards the inner wall of the pipe body, and the extrusion force between the rubber sealing band and the inner wall is increased; on the other hand, under the linkage effect of connecting rod, promote the outside removal of the first dull and stereotyped billet in both sides, the rubber seal area circle of arc billet both sides cambered surface department extrudees, avoids the rubber seal area circle of arc billet both sides cambered surface department to compress down less and leads to there to the problem of gap in this place.

2. According to the utility model, under the illumination of lamplight, the hexagonal wrench stretches into one end of the tube body and is inserted into the hexagonal countersunk hole, the hexagonal wrench is rotated in parallel towards one side to drive the screw sleeve to rotate anticlockwise, and when the hexagonal wrench rotates to the inner wall of the tube body and can not rotate again, the hexagonal wrench is inserted into the hexagonal countersunk hole at the rest position until the screw sleeve rotation requirement is stopped, so that the operation is simple.

Drawings

FIG. 1 shows a schematic cross-sectional view of a joint of an inner expansion rubber seal ring and a pipe body according to an embodiment of the utility model;

FIG. 2 shows a schematic diagram of a tensioning assembly for an internal expansion rubber seal ring according to an embodiment of the present utility model;

FIG. 3 shows a schematic cross-sectional view of a rubber seal band of an internal expansion rubber seal ring provided in accordance with an embodiment of the present utility model;

fig. 4 shows an enlarged schematic view of a portion a of an inner expansion rubber seal ring according to an embodiment of the present utility model.

Legend description:

1. a first tube body; 101. an arc-shaped groove; 102. a through groove; 2. a tensioning assembly; 211. arc steel bars; 212. a first flat steel bar; 2121. a chute; 22. a second flat steel bar; 23. a connecting rod; 24. a limiting pin; 25. a stud; 261. a connecting plate; 262. a screw sleeve; 2621. hexagonal countersunk holes; 271. a first rotating shaft; 272. a second rotating shaft; 3. a rubber sealing band; 4. a second tube body; 5. and (5) a connecting ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides an internal expanding rubber seal, including two sets of body that are connected, two sets of body that are connected include first body 1 and second body 4, through 5 threaded connection of go-between two sets of pipelines, the cooperation has the rubber seal area circle 3 of crossing the terminal surface seam between two sets of body, two sets of arc wall 101 about axis symmetry have been seted up to the inside of rubber seal area circle 3, and set up the logical groove 102 with arc wall 101 both ends intercommunication on the rubber seal area circle 3, the cooperation is provided with arc billet 211 in the arc wall 101, arc billet 211 both ends integral connection has the first dull and stereotyped billet 212 that stretches out logical groove 102, be provided with the tensioning assembly 2 of regulation billet arc billet 211 curved surface radian between two sets of billet structures, and then adjust the extrusion force size of rubber seal area circle 3 to the body inner wall.

Specifically, as shown in fig. 2 and fig. 4, the tensioning assembly 2 includes a second flat steel bar 22 disposed on the outer side of the first flat steel bar 212, a limiting pin 24 is fixedly connected to the second flat steel bar 22, the limiting pin 24 passes through a sliding groove 2121 on the first flat steel bar 212, the limiting pin 24 is in a T-shaped structure, the outer diameter of the horizontal end at the bottom is larger than the groove diameter of the sliding groove 2121, studs 25 with different screw threads and directions are fixedly connected to the middle parts of opposite surfaces of the two groups of second flat steel bars 22, a screw sleeve 262 is screwed between the two groups of studs 25, connecting plates 261 are fixedly sleeved at two ends of the screw sleeve 262, a second rotating shaft 272 is rotatably connected between the two groups of connecting plates 261, two groups of connecting rods 23 are fixedly sleeved on the second rotating shaft 272, one end, far away from the sliding groove 2121, of the first flat steel bar 212 is rotatably connected with a first rotating shaft 271, and the connecting rods 23 are fixedly sleeved on the first rotating shaft 271 close to the first rotating shaft 271. On the one hand, according to the screw transmission principle, the screw sleeve 262 is rotated anticlockwise, the two groups of studs 25 are driven to move in the direction away from each other, the second flat steel bars 22 are driven to move away from each other, under the connection action of the limiting pins 24, the two groups of arc-shaped steel bars 211 and the first flat steel bars 212 are driven to move towards the inner wall of the pipe body, and the extrusion force between the rubber sealing band 3 and the inner wall is increased; on the other hand, under the linkage action of the connecting rod 23, the first flat steel bars 212 on two sides are pushed to move outwards, the rubber sealing belt rings 3 on the cambered surfaces on two sides of the arc steel bars 211 are extruded, and the problem that gaps exist in the positions due to the fact that the rubber sealing belt rings 3 on the cambered surfaces on two sides of the arc steel bars 211 are compressed less is avoided.

Specifically, as shown in fig. 4, a plurality of groups of hexagonal countersunk holes 2621 are distributed on the outer peripheral surface of the screw sleeve 262 close to two ends in an array manner, so that the screw sleeve 262 can be operated from the inside of the tube body, a hexagonal wrench is stretched into one end of the tube body under the illumination of lamplight and inserted into the hexagonal countersunk holes 2621, the hexagonal wrench is rotated in parallel towards one side to drive the screw sleeve 262 to rotate anticlockwise, and when the hexagonal wrench rotates to the inner wall of the tube body and can not rotate any more, the hexagonal wrench is inserted into the hexagonal countersunk holes 2621 at the other positions until the rotation requirement of the screw sleeve 262 is stopped, and the operation is simple. Wherein, two sets of connecting plates 261 set up between hexagonal countersunk head holes 2621 in both ends, do not receive the interference of second pivot 272 when guaranteeing the hexagonal spanner operation, have great operating space.

Working principle: when the novel sealing device is used, firstly, under the lighting of lamplight, a hexagonal wrench stretches into one end of a tube body and is inserted into a hexagonal countersunk hole 2621, the hexagonal wrench is rotated in parallel towards one side, a screw sleeve 262 is driven to rotate anticlockwise, secondly, according to the screw transmission principle, two groups of studs 25 are driven to move towards the direction away from each other, a second flat steel bar 22 is driven to move away from each other, under the connection effect of a limiting pin 24, two groups of arc steel bars 211 and a first flat steel bar 212 are driven to move towards the inner wall direction of the tube body, the extrusion force between a rubber sealing band 3 and the inner wall is increased, meanwhile, under the linkage effect of a connecting rod 23, the first flat steel bars 212 on two sides are pushed to move outwards, the rubber sealing band 3 on two cambered surfaces of the arc steel bars 211 is extruded, and the problem that gaps exist in the arc steel bars 211 are caused by small compression of the rubber sealing band 3 on the cambered surfaces on two sides of the arc steel bars 211 is avoided.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides an internal expanding rubber seal, includes two sets of body that are connected, and the cooperation has rubber seal area circle (3) of crossing the terminal surface seam between two sets of body, its characterized in that, two sets of arc grooves (101) about axis symmetry have been seted up to rubber seal area circle (3) inside, and set up logical groove (102) with arc groove (101) both ends intercommunication on rubber seal area circle (3), arc groove (101) internal fit is provided with arc billet (211), arc billet (211) both ends integrated into one piece has first dull and stereotyped billet (212) of stretching out logical groove (102), is provided with tensioning assembly (2) of regulation billet arc billet (211) curved surface radian between two sets of billet structures, and then adjusts the extrusion force size of rubber seal area circle (3) to the body inner wall.

2. An internal expanding rubber sealing ring according to claim 1, wherein the tensioning assembly (2) comprises a second flat steel bar (22) arranged on the outer side of the first flat steel bar (212), a limiting pin (24) is fixedly connected to the second flat steel bar (22), the limiting pin (24) penetrates through a sliding groove (2121) on the first flat steel bar (212), studs (25) with different screw threads and directions are fixedly connected to the middle parts of opposite surfaces of the two groups of second flat steel bars (22), and screw sleeves (262) are screwed between the two groups of studs (25).

3. The internal expanding rubber sealing ring according to claim 2, wherein a plurality of groups of hexagonal countersunk holes (2621) are distributed on the peripheral surface of the screw sleeve (262) close to the two ends in an array manner.

4. An internal expansion rubber sealing ring according to claim 3, wherein connecting plates (261) are fixedly sleeved at two ends of the screw sleeve (262), a second rotating shaft (272) is rotatably connected between the two groups of connecting plates (261), two groups of connecting rods (23) which are arranged in parallel are fixedly sleeved on the second rotating shaft (272), one end, far away from the sliding groove (2121), of the first flat steel bar (212) is rotatably connected with a first rotating shaft (271), and the connecting rods (23) are fixedly sleeved on the first rotating shaft (271) close to the first rotating shaft.

5. The inner expansion type rubber sealing ring according to claim 4, wherein the two sets of connecting plates (261) are arranged between the hexagonal countersunk holes (2621) at two ends.

6. An internal expanding rubber sealing ring according to claim 5, wherein the two groups of connected pipes comprise a first pipe body (1) and a second pipe body (4), and the two groups of pipes are connected through a connecting ring (5) in a threaded manner.