CN210424135U - Connecting structure for expansion joint of drain pipe - Google Patents
Connecting structure for expansion joint of drain pipe Download PDFInfo
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- CN210424135U CN210424135U CN201921377630.5U CN201921377630U CN210424135U CN 210424135 U CN210424135 U CN 210424135U CN 201921377630 U CN201921377630 U CN 201921377630U CN 210424135 U CN210424135 U CN 210424135U
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- expansion joint
- ring
- drain pipe
- joint main
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Abstract
The utility model provides a drain pipe telescopic joint connecting structure, which comprises a drain pipe and a telescopic joint main body sleeved on the drain pipe; the expansion joint is characterized by also comprising a sealing assembly arranged between the drain pipe and the expansion joint main body, wherein the expansion joint main body is provided with a gland used for compressing the sealing assembly; the seal assembly includes a seal ring and a clamping ring. The utility model discloses create structural design rationally, sealed effect, and it is more convenient to install, and sealing washer wherein has "wedge seal" and "expansion seal" two kinds of effects concurrently, and simultaneously, the installation is difficult for receiving frictional resistance's influence, installs more easily and targets in place, can effectively reduce the hidden danger of leaking.
Description
Technical Field
The invention belongs to the technical field of drain pipe sealing structures, and particularly relates to a drain pipe expansion joint connecting structure.
Background
The plastic pipeline is influenced by the external environment temperature in the installation and use processes, and the phenomena of expansion with heat and contraction with cold generally exist. In order to prevent the drain pipe from being bent or broken due to thermal expansion and cold contraction, the expansion joint is required to realize expansion compensation. When the telescopic joint is connected with the pipe, one end of the telescopic joint is bonded by glue, and the other end of the telescopic joint is flexibly connected by a sealing ring and a spiral gland.
The traditional flexible connection mainly comprises an ① wedge-shaped rubber ring sealing structure, wherein the rubber ring is wedge-shaped, flat at the upper part and sharp at the lower part, and downwards extrudes the rubber ring through a gland to enable the lower part of the rubber ring to be plugged into a gap between a telescopic joint main body and a pipe to achieve a sealing effect, the ② herringbone rubber ring sealing structure is used for enabling the rubber ring to be herringbone, downwards extrudes the top end of the rubber ring through the gland to enable the lower part of the rubber ring to be forked and respectively contacted with the telescopic joint main body and the pipe to achieve the sealing effect.
However, the above-mentioned techniques have drawbacks, for example, for the wedge-shaped rubber ring structure, the contact surface between the rubber ring and the expansion joint main body and the pipe is large, and when the wedge-shaped rubber ring structure is installed, large frictional resistance needs to be overcome, and the tip of the rubber ring is difficult to push and extrude in place, so that the tightening is laborious, and the conventional tool can not even meet the requirements. And if the screw is screwed down without using large force, water leakage is easy to occur. For the herringbone rubber ring structure, the sealing position of the rubber ring is a free end in unilateral contact, the requirement on the hardness of the rubber ring is high, and the tightness of the rubber ring, the expansion joint main body and the pipe fitting is greatly related to the elasticity of the rubber ring. If the rubber ring is aged and the elasticity is reduced, a great risk of water leakage exists.
Disclosure of Invention
In view of the above, the present invention provides a drain pipe expansion joint connection structure, which aims to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a drain pipe telescopic joint connecting structure comprises a drain pipe and a telescopic joint main body sleeved on the drain pipe; the expansion joint is characterized by also comprising a sealing assembly arranged between the drain pipe and the expansion joint main body, wherein the expansion joint main body is provided with a gland used for compressing the sealing assembly;
the sealing component comprises a sealing ring and a pressing ring, wherein
The sealing ring is provided with a Y-shaped branch at one end facing the pressing ring, and a tip part extending into a gap between the telescopic joint main body and the drainage pipe is arranged at one end of the sealing ring different from the Y-shaped branch;
the pressing ring is provided with an extrusion part corresponding to the Y-shaped branch of the sealing ring, and one end of the pressing ring, which is different from the extrusion part, is provided with a pressing end face matched with the gland.
Further, the gland is provided with a jacking part matched with the compression end face.
Furthermore, the gland is provided with an internal thread structure, and the telescopic joint main body is provided with an external thread structure which forms a thread pair with the upper thread of the gland.
Furthermore, the inner wall of the expansion joint main body is provided with a convex ring structure used for positioning the drain pipe.
Furthermore, the distance between the convex ring structure and the end face of the telescopic joint main body, which is provided with the sealing component, is 0.5-1.5 times of the inner diameter of the telescopic joint main body.
Furthermore, the sealing ring is made of rubber materials.
Compared with the prior art, the invention has the following advantages:
the invention has the advantages of reasonable structural design, sealing effect and more convenient installation. The sealing ring has two effects of wedge sealing and expansion sealing. When the gland is screwed, the sealing ring can be pushed and extruded downwards, the tip of the sealing ring is plugged into a gap between the telescopic joint main body and the pipe, and meanwhile, the pressing ring is pressed into the forked part of the sealing ring, so that the fork body at the top of the sealing ring expands towards the inner side and the outer side to respectively press the telescopic joint main body and the pipe, and thus, two sealing effects are realized. The contact area of the sealing ring, the expansion joint main body and the pipe is small, the installation process is not easily affected by friction resistance, the installation is easier, and the hidden danger of water leakage can be effectively reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the connection part of the drain pipe and the expansion joint main body in the invention;
FIG. 3 is a schematic view of a seal assembly in an embodiment of the invention;
FIG. 4 is a schematic view of the V-shaped body in the inventive embodiment;
fig. 5 is a schematic view of an embodiment of the present invention with a resilient adjustment member.
Description of reference numerals:
1-a water drainage pipe; 2-a telescopic joint body; 3-sealing ring; 4-pressing a ring; 5-bifurcation; 6-tip; 7-an extrusion part; 8-pressing the end face; 9-a top holding part; 10-a resilient adjustment member; 11-a thread pair; 12-a fork body; 13-a convex ring structure; 14-V type; 15-a bonding portion; 16-a gland; 17-gap.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A drain pipe expansion joint connecting structure is shown in figures 1 to 5 and comprises a drain pipe 1 and an expansion joint main body 2 sleeved on the drain pipe; the expansion joint further comprises a sealing assembly arranged between the drain pipe and the expansion joint main body, and a gland 16 for compressing the sealing assembly is arranged on the expansion joint main body;
the seal assembly comprises a seal ring 3 and a pressing ring 4, wherein:
a Y-shaped branch 5 is arranged at one end of the sealing ring facing the pressing ring, and a tip part 6 extending into the gap between the expansion joint main body and the drain pipe is arranged at one end of the sealing ring different from the Y-shaped branch;
and the pressing ring is provided with an extrusion part 7 corresponding to the Y-shaped branch of the sealing ring, and one end of the pressing ring, which is different from the extrusion part, is provided with a pressing end surface 8 matched with the gland. Generally, the seal ring is made of a rubber material.
During actual installation, the drainage pipe needing to be connected is intercepted, the spiral gland, the pressing ring and the sealing ring of the telescopic joint are sequentially sleeved on the outer wall of the pipe according to the sequence and the direction of the attached drawing 1, then the pipe and the sealing ring are simultaneously inserted into the telescopic joint main body, the sealing ring is kept to be flatly inserted, the wedge-shaped structure of the sealing ring is tightly attached to the telescopic joint main body, and a first sealing effect is achieved. And then, the screw cap is continuously screwed downwards, so that the pressing ring is pressed into the bifurcation of the sealing ring, the sealing ring expands towards two sides, and the pipe and the expansion joint main body are respectively pressed tightly, and a second sealing effect is achieved.
In an alternative embodiment, as shown in fig. 5, an elastic adjusting member 10 may be further provided between the supporting portion and the pressing end surface. Typically, the resilient adjustment member employs a compression spring or a resilient tab. Specifically, the method comprises the following steps: when the compression springs are adopted, a plurality of compression springs can be uniformly distributed along the circumferential direction of the drain pipe; in the embodiment of the elastic pressing sheet, the elastic pressing sheet can be in an arc-shaped structure, is matched with the outer diameter of the drain pipe, has no interference with the drain pipe and the expansion joint main body, and can realize elastic deformation in the axial direction, and the specific structure is not limited. Under this embodiment, even allow the face of the portion of holding on top and compress tightly the terminal surface for the terminal surface of nonparallel, perhaps, when the clamping ring has certain circumstances such as incline, utilize the gland to compress tightly the elasticity adjusting part after, utilize the elasticity adjustment ability of elasticity adjustment self, also can fine compress tightly fixed sealing washer, guarantee that the sealing washer lower extreme inserts between telescopic joint main part and the drain pipe, realize reliable leakproofness.
The gland is provided with an internal thread structure, and the telescopic joint main body is provided with an external thread structure which forms a thread pair 11 with the upper thread of the gland. Through twisting the gland soon, can adjust the height of gland, when compressing tightly the clamping ring, be about to the sealing washer compress tightly, realize sealed to, also be difficult for losing efficacy for long-term use, through twisting the regulation of twisting of gland, all can be fine realization sealed. In order to press the pressing ring, a top holding part 9 matched with the pressing end face is arranged on the pressing cover.
Because the top end of the sealing ring is provided with the Y-shaped fork, when the extrusion part of the pressing ring is downwards inserted into the Y-shaped fork and is continuously pressed, the inward and outward two sides of the top part of the sealing ring are expanded, and the expansion joint main body and the pipe are respectively pressed, so that two sealing effects are realized.
The inner wall of the expansion joint main body is provided with a convex ring structure 13 used for positioning the drain pipe, and the surface of the side wall of the convex ring structure is a plane vertical to the expansion joint main body. After the drain pipe inserts the telescopic joint main part, with the cooperation of bulge loop structure, guaranteed the controllable of drain pipe with telescopic joint main part cooperation length, simultaneously, can also guarantee the axiality of drain pipe and telescopic joint main part.
In order to ensure the reliability of the connection, the bonding length is not too long, and the material is not wasted. Generally, the distance between the convex ring structure and the end face of the telescopic joint body, which is provided with the sealing component, is 0.5-1.5 times of the inner diameter of the telescopic joint body.
In an alternative embodiment, in order to further improve the sealing capability, the sealing ring may be a split structure, as shown in fig. 3 and 4, which includes a plurality of V-shaped bodies 14 from top to bottom, each opening of the V-shaped body faces one side of the pressing ring (actually, similar to the V-shaped seal), and the opening of the uppermost V-shaped body is a branched structure as described above, and is used for cooperating with the pressing ring to achieve the effect of pressing and spreading; the lower end of the V-shaped body at the lowest part is provided with a tip part which extends into the gap between the expansion joint main body and the drain pipe.
And between each V-shaped body, the included angle of the V-shaped body opening is reduced from top to bottom in turn, that is, under the condition of no external force extrusion, a certain gap (the fork body part of the two adjacent V-shaped bodies is always in contact) exists between the two adjacent V-shaped bodies from top to bottom (specifically, between the tip of the upper V-shaped body and the fork root of the lower V-shaped body), and the gap 17 can be reduced or even zeroed under the compression state.
In the above embodiment, as shown in fig. 4, the outer edge of the fork 12 of each V-shaped body is provided with a joint portion 15 for jointing with the drain pipe or the expansion joint body. When the clamping ring compresses the combined sealing ring, the joint parts on two sides of each V-shaped body form two seals with the pipe and the expansion joint main body, and the formed multi-sealing structure greatly improves the reliability of sealing.
The invention improves the sealing structure to achieve better sealing effect of the expansion joint, and the installation is more convenient. The sealing ring has two effects of wedge sealing and expansion sealing. When the gland is screwed, the sealing ring can be pushed and extruded downwards, the tip of the sealing ring is plugged into a gap between the telescopic joint main body and the pipe, and meanwhile, the pressing ring is pressed into the forked part of the sealing ring, so that the fork body at the top of the sealing ring expands towards the inner side and the outer side to respectively press the telescopic joint main body and the pipe, and thus, two sealing effects are realized. The contact area of the sealing ring, the expansion joint main body and the pipe is small, the installation process is not easily affected by friction resistance, the installation is easier, and the hidden danger of water leakage can be effectively reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (6)
1. A drain pipe telescopic joint connecting structure comprises a drain pipe and a telescopic joint main body sleeved on the drain pipe; the method is characterized in that: the expansion joint is characterized by also comprising a sealing assembly arranged between the drain pipe and the expansion joint main body, wherein the expansion joint main body is provided with a gland used for compressing the sealing assembly;
the seal assembly includes a seal ring and a clamping ring, wherein:
the sealing ring is provided with a Y-shaped branch at one end facing the pressing ring, and a tip part extending into a gap between the telescopic joint main body and the drainage pipe is arranged at one end of the sealing ring different from the Y-shaped branch;
the pressing ring is provided with an extrusion part corresponding to the Y-shaped branch of the sealing ring, and one end of the pressing ring, which is different from the extrusion part, is provided with a pressing end face matched with the gland.
2. The drain expansion joint connection structure according to claim 1, wherein: and the gland is provided with a jacking part matched with the compression end face.
3. The drain expansion joint connection structure according to claim 1, wherein: the gland is provided with an internal thread structure, and the telescopic joint main body is provided with an external thread structure which forms a thread pair with the upper thread of the gland.
4. The drain expansion joint connection structure according to claim 1, wherein: the inner wall of the expansion joint main body is provided with a convex ring structure used for positioning the drain pipe.
5. The drain expansion joint connection structure according to claim 4, wherein: the distance between the convex ring structure and the end face of one end of the telescopic joint main body, which is provided with the sealing component, is 0.5-1.5 times of the inner diameter of the telescopic joint main body.
6. The drain expansion joint connection structure according to claim 1, wherein: the sealing ring is made of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377630.5U CN210424135U (en) | 2019-08-23 | 2019-08-23 | Connecting structure for expansion joint of drain pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377630.5U CN210424135U (en) | 2019-08-23 | 2019-08-23 | Connecting structure for expansion joint of drain pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210424135U true CN210424135U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921377630.5U Active CN210424135U (en) | 2019-08-23 | 2019-08-23 | Connecting structure for expansion joint of drain pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210424135U (en) |
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2019
- 2019-08-23 CN CN201921377630.5U patent/CN210424135U/en active Active
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