CN220268740U

CN220268740U - Polytetrafluoroethylene sealing element

Info

Publication number: CN220268740U
Application number: CN202322025152.4U
Authority: CN
Inventors: 廖昌平
Original assignee: Guangzhou Texmond Membrane Structure Technology Development Co ltd
Current assignee: Guangzhou Texmond Membrane Structure Technology Development Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2023-12-29
Anticipated expiration: 2033-07-31

Abstract

The utility model provides a polytetrafluoroethylene sealing element, and relates to the technical field of sealing elements. The polytetrafluoroethylene sealing element comprises two connecting pipes and is characterized by comprising a sealing mechanism, wherein the sealing mechanism comprises an elastic sealing element, a first sleeve, a second sleeve and a fixing element, the first sleeve and the second sleeve are respectively communicated with the two connecting pipes, the elastic sealing element is arranged at the free end of the first sleeve, a first annular sealing groove matched with the elastic sealing element is formed in the free end of the second sleeve, the elastic sealing element is abutted to the first annular sealing groove, and the first sleeve and the second sleeve are connected through the fixing element. This polytetrafluoroethylene sealing member sets up the elastic sealing member in first sleeve pipe and the sheathed tube junction of second, utilizes the elasticity of elastic sealing member to realize sealed purpose after first sleeve pipe and the butt of second sleeve pipe, can avoid the fluid in the connecting pipe to lead to the fact the corruption to elastic sealing member to influence its sealed effect.

Description

Polytetrafluoroethylene sealing element

Technical Field

The utility model relates to the technical field of sealing elements, in particular to a polytetrafluoroethylene sealing element.

Background

Polytetrafluoroethylene, commonly known as plastic king, is a high molecular compound polymerized from tetrafluoroethylene, has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-tackiness, electrical insulation property and good aging resistance, can be used as engineering plastics to be made into polytetrafluoroethylene tubes, rods, belts, plates, films and the like, and is generally applied to corrosion-resistant pipelines, containers, pumps, valves, radars, high-frequency communication equipment, radio equipment and the like with higher performance requirements.

The seal is a material or part of a component part that prevents leakage of fluid or solid particles from between adjacent joint surfaces, and prevents intrusion of foreign matters such as dust and moisture into the interior of the machine. Polytetrafluoroethylene is commonly used to make seals because of its excellent properties.

Along with the development of society, the use of pipeline connection sealing member also gradually increases, and current pipeline sealing member is mostly two flanges and passes through the screw fixation, and rethread rubber circle is as sealed the pad to reach the effect of connecting pipeline and seal. However, most of the existing pipeline sealing elements are single in structure, and the joint of two pipelines is sealed only by using a common sealing ring, so that the effect is poor and leakage is easy.

Chinese patent application number CN201811496209.6 discloses a pipeline elastic sealing member, including last mounting and lower mounting, it is provided with first sealing washer to go up mounting bottom mounting, first sealing washer is keeping away from the fixed spring that is provided with in mounting one side, the mounting activity sets up in last mounting below down, the fixed second sealing washer that is provided with in mounting top down, the other end of spring is fixed to be set up in the one side that the mounting was kept away from down in the second sealing washer, a plurality of fixed orificess have been seted up to last mounting bottom, a plurality of draw-in grooves have been seted up on the fixed orificess inner wall, the fixed a plurality of fixed columns that are provided with in mounting top down, the outside fixed of fixed column is provided with a plurality of fixture blocks with draw-in groove engaged with, it is provided with sealed pad to go up the mounting bottom in the spring outside is fixed, the bottom mounting of sealed pad is fixed to be set up in the top of mounting down. The utility model has simple structure and convenient use, and effectively improves the sealing performance of the pipeline connection.

However, the applicant believes that at least the following technical problems remain in the above related art: the spring and the sealing rings of the sealing member are all positioned in the sealing member, when the sealing member is used for connecting two pipelines, fluid in the pipelines can flow through the spring and the sealing rings, and the spring and the sealing rings can be corroded when the fluid in the pipelines is used for a long time, so that the sealing effect is affected.

Disclosure of Invention

The utility model aims to provide a polytetrafluoroethylene sealing element, which is characterized in that an elastic sealing element is arranged on the end face of a sleeve, and the two sleeves are abutted together to realize the sealing purpose, so that the corrosion of fluid in a connecting pipe to the elastic sealing element is avoided.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a polytetrafluoroethylene sealing member, its includes two connecting pipes, a serial communication port, including sealing mechanism, above-mentioned sealing mechanism includes elastic sealing member, first sleeve pipe, second sleeve pipe and mounting, above-mentioned first sleeve pipe and above-mentioned second sleeve pipe communicate with two above-mentioned connecting pipes respectively, above-mentioned elastic sealing member sets up in the free end of above-mentioned first sheathed tube, the first annular seal groove with the adaptation of above-mentioned elastic sealing member has been seted up to the free end of above-mentioned second sheathed tube, the butt of above-mentioned elastic sealing member and above-mentioned first annular seal groove, above-mentioned first sleeve pipe and above-mentioned second sleeve pipe pass through the connection of above-mentioned mounting.

Further, in the present utility model, the elastic sealing member includes a sealing ring and a plurality of elastic members, an annular groove adapted to the sealing ring is formed at a free end of the first sleeve, the plurality of elastic members are uniformly spaced in the annular groove, the sealing ring is slidably disposed in the annular groove, and a free end of any of the elastic members is connected to the sealing ring.

Further, in the present utility model, an anti-disengaging mechanism is further provided at a connection portion between the first sleeve and the second sleeve, the anti-disengaging mechanism includes a plurality of elastic latches and a plurality of clamping blocks adapted to the elastic latches, the plurality of elastic latches are uniformly spaced on the first sleeve, the plurality of clamping blocks are uniformly spaced on the second sleeve, and the elastic latches are engaged with the clamping blocks in a one-to-one correspondence manner.

Further, in the present utility model, one end of the seal ring, which is far away from the elastic member, is a pointed structure, a pointed annular groove adapted to the pointed structure is formed in the bottom surface of the first annular seal groove, and the seal ring abuts against the pointed annular groove.

Further, in the present utility model, the height of the seal ring is greater than the depth of the first annular seal groove.

Further, in the present utility model, at least one seal ring is disposed between the first sleeve and the second sleeve, a second annular seal groove adapted to the seal ring is formed at each of the free end of the first sleeve and the free end of the second sleeve, and the seal ring is disposed in the second annular seal groove.

Further, in the present utility model, a fixing ring is provided on each of the first sleeve and the second sleeve, and the two fixing rings are connected by the fixing member.

Further, in the present utility model, the fixing member includes a plurality of fixing bolts, and the two fixing rings are connected by the plurality of fixing bolts.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

this polytetrafluoroethylene sealing member sets up the elastic sealing member in first sleeve pipe and the sheathed tube junction of second, utilizes the elasticity of elastic sealing member to realize sealed purpose after first sleeve pipe and the butt of second sleeve pipe, can avoid the fluid in the connecting pipe to lead to the fact the corruption to elastic sealing member to influence its sealed effect.

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.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

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

FIG. 2 is a schematic structural view of a seal ring according to an embodiment of the present utility model.

Icon: 1-connecting pipes; 2-a first sleeve; 3-a second sleeve; 4-a first annular seal groove; 5-a sealing ring; 6-elastic members; 7-an annular groove; 8-elastic latch; 9-clamping blocks; 10-sealing rings; 11-a second annular seal groove; 12-a fixed ring; 13-fixing bolts.

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.

The present application is described in further detail below in conjunction with figures 1-2.

Examples

Referring to fig. 1 and 2, the present embodiment provides a polytetrafluoroethylene sealing member, which includes two connecting pipes 1, and is characterized by comprising a sealing mechanism, wherein the sealing mechanism includes an elastic sealing member, a first sleeve 2, a second sleeve 3 and a fixing member, the first sleeve 2 and the second sleeve 3 are respectively communicated with the two connecting pipes 1, the elastic sealing member is disposed at a free end of the first sleeve 2, a first annular sealing groove 4 adapted to the elastic sealing member is disposed at a free end of the second sleeve 3, the elastic sealing member is abutted to the first annular sealing groove 4, and the first sleeve 2 and the second sleeve 3 are connected through the fixing member.

In this embodiment, the two connection pipes 1 are connected by a sealing mechanism, so that the liquid in the connection pipe 1 can circulate conveniently. When the liquid in the connecting pipe 1 flows through the sealing mechanism, the sealing mechanism can ensure the smooth circulation of the liquid, and prevent the liquid from seeping out from the joint of the two connecting pipes 1 so as to ensure the sealing effect. Specifically, after the free ends of the first sleeve 2 and the second sleeve 3 are abutted together, the elastic sealing element is abutted in the first annular sealing groove 4 under the action of elastic force of the elastic sealing element, so that the tightness of the joint of the first sleeve 2 and the second sleeve 3 is ensured, and the first sleeve 2 and the second sleeve 3 are connected and fixed by the fixing element, so that the first sleeve 2 and the second sleeve 3 are not separated, and the sealing effect is achieved. The first sleeve 2 and the second sleeve 3 may each be made of polytetrafluoroethylene material. Meanwhile, the elastic sealing element is arranged on the end face of the first sleeve 2 and is not in direct contact with the fluid in the connecting pipe 1, so that the fluid in the connecting pipe 1 can be prevented from corroding the elastic sealing element, and the sealing effect of the elastic sealing element is not affected. When the elastic sealing element needs to be replaced, the fixing element can be replaced by removing the fixing element.

The first sleeve 2 and the second sleeve 3 are respectively connected with the two connecting pipes 1 in a sealing way, so that liquid in the connecting pipes 1 is prevented from seeping out from the connecting positions of the sleeves and the connecting pipes 1, and the sealing performance is ensured. The sealing mode can adopt common flange sealing, thread sealing, pipe bearing type sealing, pressure sealing and the like. Such as a flange seal, which is a common form of pipe joint seal, is suitable for pipe connections, valves and equipment connections. The sealing surfaces between the two flanges are tightly pressed together through the connection of the flanges and the fixation of the fastening bolts, so as to achieve the sealing effect. Common flange sealing forms comprise a plane flange, a convex flange, a concave flange and the like, the sealing effect is reliable, and the flange sealing structure is suitable for special conditions such as high pressure, high temperature and the like. Also for example, a thread seal, which is a common form of pipe joint seal, is suitable for pipe connections and equipment connections. The sealing gasket or sealant between the two threaded joints is tightly fixed together through threaded connection and locking, so that the sealing effect is achieved. The thread sealing mode is provided with an internal thread and an external thread, common thread standards comprise International System (ISO), english System (BSPP, NPT) and the like, and the thread sealing mode is suitable for common working conditions and low pressure conditions.

Referring to fig. 1 and 2, in some implementations of the present embodiment, the elastic sealing member includes a sealing ring 5 and a plurality of elastic members 6, the free end of the first sleeve 2 is provided with an annular groove 7 adapted to the sealing ring 5, the plurality of elastic members 6 are uniformly spaced in the annular groove 7, the sealing ring 5 is slidably disposed in the annular groove 7, and the free end of any elastic member 6 is connected to the sealing ring 5.

In this embodiment, the annular groove 7 is used for installing the sealing ring 5 and the plurality of elastic members 6, and after the first sleeve 2 and the second sleeve 3 are fixed together by the fixing members, the sealing ring 5 is always abutted against the first annular sealing groove 4 under the elastic force of the plurality of elastic members 6, so as to ensure the sealing performance. The elastic piece 6 can be a common spring, and is convenient to install and detach. In other embodiments the elastic member 6 may be made of elastic rubber or the like.

Referring to fig. 1 and 2, in some embodiments of the present disclosure, an anti-disengaging mechanism is further disposed at a connection portion between the first sleeve 2 and the second sleeve 3, the anti-disengaging mechanism includes a plurality of elastic latches 8 and a plurality of clamping blocks 9 adapted to the elastic latches 8, the plurality of elastic latches 8 are uniformly spaced on the first sleeve 2, the plurality of clamping blocks 9 are uniformly spaced on the second sleeve 3, and the elastic latches 8 are engaged with the clamping blocks 9 in a one-to-one correspondence manner.

In this embodiment, after the free end of the first sleeve 2 and the free end of the second sleeve 3 are abutted together, the elastic latch 8 can be engaged with the clamping block 9 to prevent the first sleeve 2 from being separated from the second sleeve 3, and then the first sleeve 2 and the second sleeve 3 are fixed together by using the fixing member, so as to ensure the sealing effect. When the sealing mechanism is used for a long time to cause the fixing piece to loosen, the elastic clamping teeth 8 and the clamping blocks 9 are matched for use, so that the first sleeve 2 and the second sleeve 3 can be prevented from being separated, and the sealing effect is influenced.

Referring to fig. 1 and 2, in some embodiments of the present disclosure, an end of the sealing ring 5 away from the elastic member 6 is in a pointed structure, a pointed annular groove adapted to the pointed structure is formed in a bottom surface of the first annular sealing groove 4, and the sealing ring 5 abuts against the pointed annular groove.

In this embodiment, the end of the sealing ring 5 abutting against the first annular sealing groove 4 is designed to be a sharp-angle structure, so that the contact area between the sealing ring 5 and the first annular sealing groove 4 can be increased, and the probability of liquid in the connecting pipe 1 seeping out from the sealing ring 5 can be further reduced.

Referring to fig. 1 and 2, in some implementations of the present embodiment, the height of the seal ring 5 is greater than the depth of the first annular seal groove 4.

In this embodiment, the purpose of the sealing ring 5 with a height greater than the depth of the first annular sealing groove 4 is to ensure that the liquid in the connecting pipe 1 cannot seep out through the elastic members 6 when the sealing ring 5 abuts against the first annular sealing groove 4 under the elastic force of the plurality of elastic members 6, so as to improve the sealing performance.

Referring to fig. 1 and 2, in some implementations of the present embodiment, at least one sealing ring 10 is disposed between the first sleeve 2 and the second sleeve 3, the free end of the first sleeve 2 and the free end of the second sleeve 3 are both provided with a second annular sealing groove 11 adapted to the sealing ring 10, and the sealing ring 10 is disposed in the second annular sealing groove 11.

In this embodiment, the sealing ring 10 is used to further improve the sealing performance at the junction of the first sleeve 2 and the second sleeve 3, so as to reduce the probability of liquid in the connecting pipe 1 seeping out from the junction of the first sleeve 2 and the second sleeve 3. The second annular seal groove 11 is used for installing the seal ring 10, and simultaneously prevents the seal ring 10 from sliding randomly at the joint of the first sleeve 2 and the second sleeve 3 under the action of pressure, thereby affecting the sealing effect. A plurality of sealing rings 10 can be arranged at the joint of the first sleeve 2 and the second sleeve 3 according to the requirement, the sealing rings 10 can be made of polytetrafluoroethylene materials, and the sealing rings 10 can be more corrosion-resistant, so that the service life of the sealing rings 10 is prolonged.

Referring to fig. 1 and 2, in some implementations of the present embodiment, the first sleeve 2 and the second sleeve 3 are provided with fixing rings 12, and the two fixing rings 12 are connected by a fixing member.

In this embodiment, two fixing rings 12 are used for mounting the fixing elements, whereby the first sleeve 2 and the second sleeve 3 are connected together by the fixing elements.

Referring to fig. 1 and 2, in some implementations of the present embodiment, the fixing member includes a plurality of fixing bolts 13, and two fixing rings 12 are connected by the plurality of fixing bolts 13.

In this embodiment, the two fixing rings 12 are connected together by a plurality of fixing bolts 13, which is convenient for installation and disassembly.

When in use, the first sleeve 2 and the second sleeve 3 of the sealing element are respectively connected with the two connecting pipes 1 in a sealing way, then the first sleeve 2 and the second sleeve 3 are abutted together, and the corresponding elastic clamping teeth 8 are meshed with the clamping blocks 9. The sealing ring 5 is abutted in the first annular sealing groove 4 under the action of a plurality of elastic pieces 6, so that the sealing purpose is realized. Finally, a plurality of fixing bolts 13 are used for fixing the first sleeve 2 and the second sleeve 3 together, so that the first sleeve 2 and the second sleeve 3 are prevented from being separated from each other.

In summary, the polytetrafluoroethylene sealing element provided by the embodiment of the utility model has at least the following beneficial effects:

this polytetrafluoroethylene sealing member sets up the junction at first sleeve pipe 2 and second sleeve pipe 3 with the elastic sealing member, utilizes the elasticity of elastic sealing member to realize sealing purpose after first sleeve pipe 2 and the 3 butt of second sleeve pipe, can avoid the fluid in the connecting pipe 1 to cause the corruption to the elastic sealing member to influence its sealed effect.

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 utility model provides a polytetrafluoroethylene sealing member, includes two connecting pipes (1), its characterized in that, including sealing mechanism, sealing mechanism includes elastic seal spare, first sleeve pipe (2), second sleeve pipe (3) and mounting, first sleeve pipe (2) with second sleeve pipe (3) respectively with two connecting pipe (1) intercommunication, elastic seal spare set up in the free end of first sleeve pipe (2), the free end of second sleeve pipe (3) seted up with first annular seal groove (4) of elastic seal spare adaptation, elastic seal spare with first annular seal groove (4) butt, first sleeve pipe (2) with second sleeve pipe (3) are passed through the mounting and are connected.

2. The polytetrafluoroethylene sealing element according to claim 1, wherein the elastic sealing element comprises a sealing ring (5) and a plurality of elastic elements (6), an annular groove (7) matched with the sealing ring (5) is formed at the free end of the first sleeve (2), the elastic elements (6) are uniformly arranged in the annular groove (7) at intervals, the sealing ring (5) is slidably arranged in the annular groove (7), and the free end of any elastic element (6) is connected with the sealing ring (5).

3. The polytetrafluoroethylene sealing element according to claim 1, wherein an anti-disengaging mechanism is further arranged at the joint of the first sleeve (2) and the second sleeve (3), the anti-disengaging mechanism comprises a plurality of elastic clamping teeth (8) and a plurality of clamping blocks (9) matched with the elastic clamping teeth (8), the elastic clamping teeth (8) are uniformly arranged on the first sleeve (2) at intervals, the clamping blocks (9) are uniformly arranged on the second sleeve (3) at intervals, and the elastic clamping teeth (8) are meshed with the clamping blocks (9) in a one-to-one correspondence manner.

4. The polytetrafluoroethylene sealing element according to claim 2, wherein one end of the sealing ring (5) far away from the elastic element (6) is of a sharp angle structure, a sharp angle annular groove matched with the sharp angle structure is formed in the bottom surface of the first annular sealing groove (4), and the sealing ring (5) is abutted to the sharp angle annular groove.

5. A polytetrafluoroethylene seal according to claim 2, wherein the height of the sealing ring (5) is greater than the depth of the first annular sealing groove (4).

6. A polytetrafluoroethylene seal according to claim 1, characterized in that at least one sealing ring (10) is arranged between the first sleeve (2) and the second sleeve (3), the free end of the first sleeve (2) and the free end of the second sleeve (3) are both provided with a second annular sealing groove (11) adapted to the sealing ring (10), and the sealing ring (10) is arranged in the second annular sealing groove (11).

7. A polytetrafluoroethylene seal according to claim 1, wherein a fixation ring (12) is provided on both the first sleeve (2) and the second sleeve (3), both fixation rings (12) being connected by the fixation.

8. A polytetrafluoroethylene seal according to claim 7, wherein said fixture comprises a plurality of fixing bolts (13), two of said fixing rings (12) being connected by a plurality of said fixing bolts (13).