CN219176937U

CN219176937U - Shaft end sealing ring for sealing and isolating expanding agent

Info

Publication number: CN219176937U
Application number: CN202223412186.0U
Authority: CN
Inventors: 杨建中; 欧阳司晨; 许宏斌; 陈杰
Original assignee: Yibin Tianyi New Material Technology Co ltd
Current assignee: Yibin Tianyi New Material Technology Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-06-13
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a shaft end sealing ring for sealing and isolating an expanding agent, which comprises a soft sealing ring body, wherein the radial outer side surface of the sealing ring body is an outer sealing surface, the radial inner side of the sealing ring body is provided with a compression surface, one surface of the sealing ring body, which is close to an insertion pipe, is a shaft end surface, the shaft end surface is attached to the end surface of the insertion pipe, the sealing ring body is provided with a connecting part, the sealing ring body is detachably arranged on the insertion pipe through the connecting part, the compression surface is provided with an inner ring groove, the inner ring groove is internally provided with the expanding agent, the inner ring groove is provided with a sealing plate, the sealing plate is used for sealing the inner ring groove, and when the expanding agent does not expand, the outer diameter of the sealing ring body is smaller than or equal to the outer diameter of the insertion pipe. According to the utility model, the foaming agent is sealed through the inner ring groove and the sealing plate, and the sealing plate effectively limits the expansion of the foaming agent, so that the outer ring of the sealing ring is effectively driven to outwards and effectively overturn, and the compression force is simultaneously generated on the end face of the shaft; the precompression of the sealing surfaces can be achieved in a simple manner.

Description

Shaft end sealing ring for sealing and isolating expanding agent

Technical Field

The utility model belongs to the technical field of sealing rings, and particularly relates to a shaft end sealing ring for sealing and isolating an expanding agent.

Background

PVC pipelines are widely used in the water delivery field, and are commonly connected by adopting a faucet in consideration of convenience in installation; the diameter of one end of the socket pipe is enlarged, the plug pipe is directly inserted into the enlarged end socket, and the joint part is provided with sealing and locking connection; the sealing performance at the faucet determines one of the key factors in whether the pipeline is successfully completed for the delivery task.

The patent with the publication number of CN204704509U discloses a PVC pipeline connecting structure, adopts built-in connection mode, and the hole enlargement section projects a circle of arc structure, is called "R mouth", and uses sealing washer and retaining member in R mouth department, and sealing washer and retaining member interact in R mouth limited space realize locking and sealing to the grafting pipe, not only the complicated inconvenient production of structure, and need overcome the extrusion force of sealing washer and retaining member when pegging graft to be difficult to insert the grafting pipe and form sealed state in the in-service use.

Disclosure of Invention

In order to solve the problems, the utility model provides a shaft end sealing ring for sealing and isolating an expanding agent, wherein the expanding agent is sealed by an inner ring groove and a sealing plate, and the sealing plate effectively limits the expansion of the expanding agent, so that the outer ring of the sealing ring is effectively driven to outwards and effectively overturn, and the end surface of the shaft simultaneously generates a pressing force; the precompression of a plurality of sealing surfaces can be simply realized, and the sealing ring body is arranged on the end face of the insertion pipe, and the diameter of the sealing ring body is smaller than the inner diameter of the insertion pipe, so that the sealing ring has the effects of easy insertion and convenient use.

The embodiment of the utility model is realized by the following technical scheme:

the shaft end sealing ring for sealing and isolating the expanding agent comprises a soft sealing ring body, wherein the sealing ring body is arranged on the end face of an insertion pipe, the outer diameter of the sealing ring body is smaller than the outer diameter of the insertion pipe, the sealing ring body is provided with a shaft end face which is attached to the end face of the insertion pipe, the radial outer side face of the sealing ring body is an outer sealing face, the radial inner side of the sealing ring body is provided with an inner annular groove, the inner annular groove is internally provided with the expanding agent, and the inner annular groove is provided with a sealing plate which is used for sealing and isolating the inner annular groove;

when the expanding agent expands, the outer sealing surface is outwards turned and pressed against the inner wall of the joint pipe, and the shaft end surface is pressed against the end surface of the plug pipe.

The radial inner side of the sealing ring body is provided with a pressure surface, the inner ring groove is arranged on the pressure surface, and when a medium is introduced into the connecting pipe, the pressure surface is pressed to enable the sealing ring body to be partially extruded into a gap between the connecting pipe and the connecting pipe.

The compression surface is a conical surface, the large-diameter end of the compression surface is connected with the outer sealing surface, and the small-diameter end of the compression surface is connected with the shaft end surface.

The end face of the shaft is provided with a connecting part, one end of the connecting part, far away from the sealing ring body, is provided with a clamping part, the end face of the plug-in pipe is provided with a clamping groove matched with the clamping part, and the clamping part is embedded in the clamping groove.

The clamping groove comprises a connected opening and an inner cavity, the width of the opening is smaller than that of the inner cavity of the clamping groove, the connecting portion is matched with the opening, and the clamping portion is matched with the inner cavity.

The clamping groove and the clamping part are annular, and the clamping groove is an annular groove.

The inner ring groove is communicated with a plurality of injection pore passages, and one end of each injection pore passage far away from the inner ring groove extends to the surface of the sealing ring body.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

(1) According to the utility model, the sealing and internal locking devices of the PVC pipeline plug-in connection are separately designed, namely, the clamping groove for connection and fixation is arranged on the end face of the plug-in pipe, the outer sealing face and the shaft end face on the outer side of the sealing ring body are used for sealing, and the sealing ring body is inserted and sealed without interference, so that the design is more flexible.

(2) The pipe is inserted and sealed at the shaft end of the insertion pipe, the outer sealing surface and the inner wall of the insertion pipe are matched, and the axial relative displacement of the insertion pipe and the insertion pipe does not influence the sealing, so that the insertion pipe is conveniently inserted into the insertion pipe for sealing.

(3) Compared with the existing sealing ring in the R port of the PVC pipeline, the sealing ring is simple in structure and convenient to process.

(4) The sealing ring is in a diameter-reduced state when being installed, so that the sealing ring is conveniently implanted into the faucet, and is not contacted with the outer tube when being installed, and the flanging of the sealing ring is prevented.

(5) According to the utility model, the expansion agent is delayed to drive the sealing ring body to expand outwards, the sealing ring body and the inner wall of the joint pipe generate pre-pressure, and the sealing ring has good adaptability to the problems of misalignment, large gap, insufficient surface cleanliness and the like of the joint part of the pipeline.

(6) The foaming agent is sealed inside the sealing ring through the inner ring groove and the sealing partition plate, so that the foaming agent has large storage capacity and large corresponding expansion deformation, and the sealing ring is beneficial to overcoming the problems of errors, surface defects and the like of pipeline socket joint.

(7) According to the utility model, the foaming agent is sealed through the inner ring groove and the sealing partition plate, and the sealing partition plate effectively limits the expansion of the foaming agent, so that the pressed surface of the sealing ring is effectively driven to outwards overturn, and the pressing force is simultaneously generated on the end surface of the shaft; the precompression of the sealing surfaces can be achieved in a simple manner.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model without the expansion agent;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of the present utility model when the expanding agent expands.

FIG. 4 is a schematic view of the structure of the utility model after expansion deformation under the constraint of the adapter tube when the expanding agent expands.

FIG. 5 is a schematic view of the pressurized structure of the present utility model.

Icon: 1-sealing ring body, 101-outer sealing surface, 102-shaft end surface, 103-compression surface, 21-connecting part, 22-clamping part, 3-inner ring groove, 4-expanding agent, 5-clamping groove, 51-opening, 52-inner cavity, 8-injection pore canal, 9-sealing partition board, 10-insertion pipe and 11-connection pipe.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the azimuth or positional relationship indicated by the terms "inner", "outer", etc. appears to be based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "configured," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

Referring to fig. 1-5, the present embodiment provides a shaft end sealing ring for sealing and expanding agent 4, which includes a soft sealing ring body 1, the sealing ring body 1 of the present embodiment is made of rubber material, the sealing ring body 1 is in an annular structure, the cross section of the sealing ring body 1 is in a triangle shape, the sealing ring body 1 is configured with a connecting portion 21, and the sealing ring body 1 is detachably disposed on an insertion tube 10 through the connecting portion 21.

The radial outer side surface of the seal ring body 1 is an outer seal surface 101, the outer seal surface 101 is a cylindrical surface, in some embodiments, the outer seal surface 101 is a single conical surface, or is formed by connecting two sections of conical surfaces, or is formed by connecting three sections of conical surfaces, or is formed by connecting four sections of conical surfaces, or is an arc-shaped ring surface, and when the outer seal surface 101 is a conical surface, the diameter of the outer seal surface 101 gradually increases or does not change towards the direction close to the plug tube 10. The radial inner side of the sealing ring body 1 is provided with a compression surface 103, in order to increase the compression area of the compression surface 103, the compression surface 103 is a conical surface or an arc-shaped annular surface, the large diameter end of the compression surface 103 is connected with the outer sealing surface 101, the small diameter end of the compression surface 103 extends towards the plug tube 10, and in other embodiments, the compression surface 103 can be formed by connecting two sections of conical surfaces, or by connecting three sections of conical surfaces, or by connecting four sections of conical surfaces; the surface of the sealing ring body 1, which is close to the plug tube 10, is a shaft end surface 102, the shaft end surface 102 is a plane, the shaft end surface 102 is attached to the end surface of the plug tube 10, in other embodiments, a conical surface or a step surface may be adopted for the shaft end surface 102, the shaft end surface 102 is attached to the end surface of the plug tube 10, and when the shaft end surface 102 adopts the conical surface or the step surface, part of the shaft end surface 102 is attached to the end surface of the plug tube 10.

The pressure receiving surface 103 is provided with an inner ring groove 3, the whole inner ring groove 3 is an annular opening 51 groove, the opening 51 of the inner ring groove 3 is arranged on the pressure receiving surface 103, the inner ring groove 3 is internally provided with an expanding agent 4, the inner ring groove 3 is provided with a sealing plate 9, the whole sealing plate 9 is of an annular plate-shaped structure, the sealing plate 9 is used for sealing the inner ring groove 3, and two sides of the sealing plate 9 are connected with the pressure receiving surface 103 and are fixed in an adhesive mode. When the expanding agent 4 is not expanded, the outer diameter of the sealing ring body 1 is smaller than or equal to the outer diameter of the insertion pipe 9, so that the sealing ring is convenient to insert into the insertion pipe 11, when the expanding agent 4 expands, the sealing ring body 1 is expanded by the expanding agent 4 to deform, the outer sealing surface 101 is outwards turned and tightly pressed on the inner wall of the insertion pipe 11, the shaft end surface 102 is tightly pressed on the end surface of the insertion pipe 10, sealing between the insertion pipe 10 and the insertion pipe is achieved, and when a medium is introduced into the insertion pipe 11, the pressure receiving surface 103 is pressed, so that the sealing ring body 1 is partially extruded into a gap between the insertion pipe 10 and the insertion pipe, and the sealing effect is achieved by pressing more and more tightly.

Referring to fig. 1 and 2, the connecting portion 21 is disposed on the shaft end surface 102, the connecting portion 21 is configured with a clamping portion 22, the end surface of the plugging tube 10 is configured with a clamping groove 5 matched with the clamping portion 22, the clamping portion 22 is embedded in the clamping groove 5, the clamping groove 5 is opened on the end surface of the plugging tube 10, and when the sealing ring body 1 is assembled, the clamping groove 5 of the end surface of the plugging tube 10 is plugged with the clamping portion 22, so that the positioning plugging process is simple and convenient. Further, the clamping groove 5 comprises an opening 51 and an inner cavity 52 which are connected, the width of the opening 51 is smaller than the width of the inner cavity 52 of the clamping groove 5, the connecting part 21 is matched with the opening 51, the clamping part 22 is matched with the inner cavity 52, the width of the clamping part 22 is larger than the width of the connecting part 21 so as to clamp the clamping part 22, and the stability of fixing the sealing ring body 1 to the shaft end of the plug tube 10 is improved; specifically, the cross section of the clamping portion 22 is a spherical structure, or a spindle structure, or a cubic structure, or an annular structure.

In this embodiment, further, in order to further improve the stability of the connection plug 10 of the seal ring body 1, the clamping groove 5 and the clamping portion 22 are both annular, and the connecting portion 21 is at least 4 columnar protrusions, or the connecting portion 21 is an annular protrusion.

Referring to fig. 1, the inner ring groove 3 is communicated with a plurality of injection holes 8, the injection holes 8 are elongated holes, one end of the injection holes 8 far away from the inner ring groove 3 extends to the surface of the sealing ring body 1, the injection holes 8 are uniformly distributed in the circumferential direction of the sealing ring body 1, at least one end of the injection holes 8 far away from the inner ring groove 3 is connected to the outer side surface of the sealing ring body 1, i.e. connected to the outer sealing surface 101 or the shaft end surface 102, and at least one end of the injection holes 8 far away from the inner ring groove 3 is connected to the inner side surface of the sealing ring body 1, i.e. connected to the pressure receiving surface 103, when the expansion agent 4 is injected from the injection holes 8 of the pressure receiving surface 103, air in the inner ring groove 3 is discharged from the injection holes 8 on the outer side, so as to fill the inner space of the inner ring groove 3 with the expansion agent 4.

Referring to fig. 1, the inner diameter of the sealing ring body 1 is smaller than or equal to the inner diameter of the insertion tube 10, so as not to affect the flow velocity in the tube.

Referring to fig. 1, the joints between the outer sealing surface 101 and the pressure receiving surface 103, between the shaft end surface 102 and the outer sealing surface 101, and between the pressure receiving surface 103 and the shaft end surface 102 are all provided with circular arc chamfers.

The expanding agent 4 is a delayed foaming agent, the expanding agent 4 is a core-shell structure, wherein the inner core adopts sodium bicarbonate particles as a foaming material, the outer shell is formed by non-volatile matters formed by volatilizing oxidized polyethylene wax emulsion, and the inner core of the delayed sodium bicarbonate can decompose the foaming material at a temperature higher than the thermal decomposition temperature of the inner core of the delayed sodium bicarbonate.

The principle of this embodiment is expressed as follows:

as shown in fig. 1, the connecting portion 21 and the clamping portion 22 of the seal ring body 1 are inserted into the clamping groove 5 of the insertion tube 10, the clamping groove 5 at the end of the insertion tube 10 is formed to be wide at the inner side and narrow at the outer side, and the clamping portion 22 is clamped into the clamping groove 5 to fix the seal ring body 1. The sealing ring body 1 at the end part of the insertion pipe 10 is in a reduced diameter state, the expanding agent 4 is injected into the inner ring groove 3 through the injection hole channel 8, then the injection hole channel 8 is blocked, and the insertion pipe 10 is inserted into the joint part of the bearing pipe 11 before the expanding agent 4 is foamed.

As shown in fig. 3, the expansion agent 4 is delayed to be expanded, and the outer sealing surface 101 of the sealing ring is expanded outwards under the constraint of the sealing plate 9; in the free state, the outer sealing surface 101 expands outwards beyond the space in which the adapter tube 11 is located.

As shown in fig. 4, under the constraint of the socket 11, the outer sealing surface 101 of the seal ring body 1 abuts against the inner cylindrical surface of the socket 11, and the outer sealing surface 101 is deformed by compression, thereby generating a pre-compression force.

As shown in fig. 5, after the medium is introduced into the pipe to generate pressure, the sealing ring body 1 is plugged into a gap between the joint pipe 11 and the plug pipe 10 under the action of internal pressure, and the sealing ring body is pressed more tightly, so that a self-sealing effect is realized.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The shaft end sealing ring is characterized by comprising a soft sealing ring body, wherein the sealing ring body is arranged on the end face of an insertion pipe, the outer diameter of the sealing ring body is smaller than the outer diameter of the insertion pipe, the sealing ring body is provided with a shaft end face which is attached to the end face of the insertion pipe, the radial outer side face of the sealing ring body is an outer sealing face, the radial inner side of the sealing ring body is provided with an inner annular groove, the inner annular groove is internally provided with an expanding agent, and the inner annular groove is provided with a sealing plate which is used for sealing the inner annular groove;

2. The shaft end sealing ring for sealing and expanding agent according to claim 1, wherein a pressure-bearing surface is arranged on the radial inner side of the sealing ring body, the inner ring groove is arranged on the pressure-bearing surface, and when a medium is introduced into the joint pipe, the pressure-bearing surface is pressed to enable the sealing ring body to be partially extruded into a gap between the joint pipe and the joint pipe.

3. The shaft end sealing ring for sealing and expanding agent according to claim 2, wherein the pressed surface is a conical surface, the large diameter end of the pressed surface is connected with the outer sealing surface, and the small diameter end of the pressed surface is connected with the shaft end surface.

4. A shaft end sealing ring for sealing and expanding agent according to any one of claims 2 and 3, wherein the shaft end surface is provided with a connecting part, one end of the connecting part far away from the sealing ring body is provided with a clamping part, the end surface of the plugging pipe is provided with a clamping groove matched with the clamping part, and the clamping part is embedded in the clamping groove.

5. The seal ring for sealing an axial end of a plugging agent according to claim 4, wherein said clamping groove comprises a connecting opening and an inner cavity, the opening having a width smaller than the width of the inner cavity of the clamping groove, said connecting portion being adapted to the opening, said clamping portion being adapted to the inner cavity.

6. The shaft end sealing ring for sealing and expanding agent according to claim 5, wherein the clamping groove and the clamping part are annular, and the clamping groove is an annular groove.

7. The seal ring for sealing an end of a shaft of an expanding agent according to claim 1, wherein the inner ring groove is communicated with a plurality of injection channels, and one end of the injection channels far away from the inner ring groove extends to the surface of the seal ring body.