CN211693871U - Step type double-face sealing connection joint - Google Patents

Step type double-face sealing connection joint Download PDF

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Publication number
CN211693871U
CN211693871U CN201921863126.6U CN201921863126U CN211693871U CN 211693871 U CN211693871 U CN 211693871U CN 201921863126 U CN201921863126 U CN 201921863126U CN 211693871 U CN211693871 U CN 211693871U
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CN
China
Prior art keywords
sealing
boss
joint
stepped
sided
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Application number
CN201921863126.6U
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Chinese (zh)
Inventor
周仲良
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Huaxing Aoya Holding Co ltd
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Huaxing Aoya Holding Co ltd
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Priority to CN201921863126.6U priority Critical patent/CN211693871U/en
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Abstract

The utility model discloses a step type double-sided sealing connecting joint, which comprises a pipe joint body, wherein the periphery of the pipe joint body is provided with a boss, at least one side of the boss is provided with a first external thread, and the first external thread extends to the end part of the pipe joint body; be equipped with the sealing washer between first external screw thread and boss, the sealing washer including the ring portion of ring locating the coupling body periphery and leaning on the step portion on the boss, this step portion is turned up by the one end of ring portion towards the boss and is formed. The utility model discloses a be equipped with the sealing washer that is in between boss and the first external screw thread on the coupling body, when the pipeline is connected, pipeline and first external screw thread threaded connection, then the pipeline tip supports and leans on the boss, and the pipeline inner wall is sealed with the annular portion of sealing washer and is cooperated, and the pipeline terminal surface is sealed with the step portion of sealing washer and is cooperated; thereby realizing double-sided sealing and greatly improving the sealing performance of the joint.

Description

Step type double-face sealing connection joint
Technical Field
The utility model belongs to the technical field of the pipe connection, concretely relates to two-sided sealing connection of step connects.
Background
The external thread pipe joint has the advantages of flexible use, convenient installation and the like, thereby being widely applied to the connection of a pipeline system.
The structure of the existing pipe joint is mostly disclosed in Chinese utility model patent with publication number CN201269373, which comprises a pipe joint body connected with a ball valve, wherein the pipe joint body is made of stainless steel material; the pipe joint body is provided with a hexagonal boss, one side of the hexagonal boss is provided with a universal pipe external thread connected with the ball valve, and a circular bead used for installing a sealing ring is formed between the pipe external thread and the pipe joint body at the end part of the pipe joint body. On the other side of the hexagonal boss, the pipe joint body is provided with a joint which is respectively connected with a stainless steel pipe, a PEX pipe or a copper pipe; depending on the nature of the pipes to be joined, pipe joints with different joints may be chosen.
However, the joints in the pipe joints are connected with stainless steel pipes, PEX pipes or copper pipes only by using external threads arranged on the joints, and the tightness of the connection mode is difficult to guarantee and leakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a step type double-sided sealing connecting joint with better sealing performance.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a step type double-sided sealing connection joint comprises a pipe joint body, wherein a boss is arranged on the periphery of the pipe joint body, at least one side of the boss is provided with a first external thread, and the first external thread extends to the end part of the pipe joint body; be equipped with the sealing washer between first external screw thread and boss, the sealing washer including the ring portion of ring locating the coupling body periphery and leaning on the step portion on the boss, this step portion is turned up by the one end of ring portion towards the boss and is formed.
The utility model discloses a be equipped with the sealing washer that is in between boss and the first external screw thread on the coupling body, when the pipeline is connected, pipeline and first external screw thread threaded connection, then the pipeline tip supports and leans on the boss, and the pipeline inner wall is sealed with the annular portion of sealing washer and is cooperated, and the pipeline terminal surface is sealed with the step portion of sealing washer and is cooperated; thereby realizing double-sided sealing and greatly improving the sealing performance of the joint.
In the stepped double-sided sealing joint, the stepped portion has a stepped sealing surface facing away from the boss, the annular portion has a first circumferential sealing surface, and the stepped sealing surface and the first circumferential sealing surface have a width corresponding to each other. The first circumferential sealing surface is in sealing engagement with the inner wall of the pipe, and the stepped sealing surface is in sealing engagement with the end face of the pipe, and the two sealing surfaces are arranged to have the same or equivalent width in order to further ensure the sealing performance of the double-sided sealing.
In the stepped double-sided sealing connection joint, one side of the boss facing the first external thread is provided with an annular accommodating groove for accommodating the step part, and the inner wall of the annular accommodating groove is tightly attached to the outer wall of the step part. The annular containing groove tightly attached to the outer wall of the step portion has a limiting effect on the position of the sealing ring, so that the sealing ring is ensured to be assembled in place, and the sealing performance is prevented from being influenced by excessive deformation of the sealing ring in the using process.
In the stepped double-sided sealing connecting joint, the depth of the annular accommodating groove is smaller than the thickness of the step part, and the step part forms a second circumferential sealing surface in the circumferential direction of the step part. And a plurality of second circumferential sealing surfaces which are in sealing fit with the inner wall of the pipeline are arranged, so that the connection sealing performance of the joint can be further improved.
In the stepped double-sided sealed joint described above, the width of the second circumferential seal surface is not less than one-half of the width of the first circumferential seal surface.
The sealing rings can be arranged on two sides of the boss at the same time, and can also be arranged on one side of the boss only. When the seal ring is provided only on one side of the boss, in the stepped double-sided sealing joint described above, the pipe joint body is provided with the first male thread and the shoulder at the end of the pipe joint body on one side of the boss. And then a common annular sealing ring is sleeved outside the shoulder.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
the utility model discloses a be equipped with the sealing washer that is in between boss and the first external screw thread on the coupling body, when the pipeline is connected, pipeline and first external screw thread threaded connection, then the pipeline tip supports and leans on the boss, and the pipeline inner wall is sealed with the annular portion of sealing washer and is cooperated, and the pipeline terminal surface is sealed with the step portion of sealing washer and is cooperated; thereby realizing double-sided sealing and greatly improving the sealing performance of the joint.
Drawings
Fig. 1 is a schematic structural view of a stepped double-sided sealing joint of the present invention;
fig. 2 is a schematic structural view of the stepped double-sided sealing joint according to another view angle of the present invention;
fig. 3 is an explosion structure diagram of the stepped double-sided sealing connection joint of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1 and 2, the stepped double-sided sealed connection joint of the present embodiment includes a pipe joint body 1, and the pipe joint body 1 has a boss 2 on the outer periphery thereof, and the boss 2 is located at the center of the pipe joint body 1.
In this embodiment, one side of the boss 2 is provided with a standard second external thread 5 and a shoulder 6, which are the same as those of the conventional pipe joint, and the annular sealing ring 4 is sleeved on the shoulder 6, so that the sealing connection between the connector and the ball valve can be realized.
As shown in fig. 1 and 3, the pipe joint body 1 is provided with a first male thread 3 on the other side of the boss 2, and the first male thread 3 extends to the end of the pipe joint body 1. And, there is a seal ring 4 between the first male thread 3 and the boss 2, the seal ring 4 includes a ring-shaped portion 41 that is provided around the outer periphery of the coupling body 1, and a step portion 42 that abuts on the boss 2, the step portion 42 being formed by turning the ring-shaped portion 41 outward toward one end of the boss 2.
As shown in fig. 3, an annular receiving groove 21 for receiving the step portion 42 is formed on one side of the boss 2 facing the first external thread 3, and an inner wall of the annular receiving groove 21 is closely attached to an outer wall of the step portion 42.
The depth of the annular receiving groove 21 may be equal to the thickness of the step portion 42, and the seal ring 4 forms a first circumferential sealing surface 41a at the outer periphery of the annular portion 41 and a step sealing surface 42a at the side of the step portion 42 opposite to the boss 2; the first circumferential sealing surface 41a is in sealing engagement with the inner wall of the pipe, and the stepped sealing surface 42a is in sealing engagement with the end face of the pipe, thereby achieving double-sided sealing.
Further, as shown in fig. 1, the depth of the annular accommodation groove 21 may be set smaller than the thickness of the stepped portion 42, so that the seal ring 4 may be formed with a second circumferential seal surface 42b in the circumferential direction of the stepped portion 42. And a plurality of second circumferential sealing surfaces 42b which are in sealing fit with the inner wall of the pipeline are arranged, so that the connection sealing performance of the joint can be further improved.
In the present embodiment, the stepped seal surface 42a and the first circumferential seal surface 41a have a width equivalent to one-half of the width of the first circumferential seal surface 41a, and the width of the second circumferential seal surface 42b is equivalent to one-half of the width of the first circumferential seal surface 41a, both for the purpose of further improving the sealing performance.
The operating principle of the step type double-sided sealing connecting joint of the embodiment is as follows:
the second external thread 5 is in threaded connection with the ball valve, and the annular sealing ring 4 ensures the sealing connection performance between the connector and the ball valve; the first external thread 3 is screwed into the pipe, the inner wall of the pipe is in sealing engagement with the first circumferential seal surface 41a, and the end face of the pipe is in sealing engagement with the stepped seal surface 42 a.
Or, the end of the pipe has a flared part, so that a step surface is formed between the flared part and the pipe, when the pipe is installed, the pipe is in threaded connection with the first external thread 3, the inner wall of the pipe is in sealing fit with the first circumferential sealing surface 41a, the step surface on the pipe is in sealing fit with the step sealing surface 42a, and the inner wall of the flared part is in sealing fit with the second circumferential sealing surface 42 b.

Claims (6)

1. A step type double-sided sealing connection joint comprises a pipe joint body (1), wherein a boss (2) is arranged on the periphery of the pipe joint body (1), and is characterized in that a first external thread (3) is arranged on the pipe joint body (1) on at least one side of the boss (2), and the first external thread (3) extends to the end part of the pipe joint body (1); be equipped with sealing washer (4) between first external screw thread (3) and boss (2), sealing washer (4) including the ring portion (41) of ring locating coupling body (1) periphery and support step portion (42) on leaning on boss (2), this step portion (42) are turned up by ring portion (41) towards the one end of boss (2) and are formed.
2. A stepped, double-sided sealed joint as recited in claim 1 wherein said step portion (42) has a step sealing surface (42a) facing away from said boss (2), said annular portion (41) having a first circumferential sealing surface (41a), said step sealing surface (42a) and said first circumferential sealing surface (41a) having a comparable width.
3. The stepped double-sided sealing connection joint as claimed in any one of claims 1 to 2, wherein one side of the boss (2) facing the first external thread (3) is provided with an annular accommodating groove (21) for accommodating the stepped part (42), and the inner wall of the annular accommodating groove (21) is tightly attached to the outer wall of the stepped part (42).
4. A stepped, double-sided sealed joint as recited in claim 3 wherein said annular receiving groove (21) has a depth less than the thickness of the step (42), said step (42) forming a second circumferential sealing surface (42b) circumferentially about the step (42).
5. A stepped, double-sided sealed joint as recited in claim 4 wherein said second circumferential sealing surface (42b) has a width no less than one-half the width of said first circumferential sealing surface (41 a).
6. A stepped, double-sided, sealed connection fitting according to any one of claims 1 to 2 and 5, characterised in that on one of the sides of the boss (2) the fitting body (1) is provided with a first external thread (3) and a shoulder (6) at the end of the fitting body (1).
CN201921863126.6U 2019-10-31 2019-10-31 Step type double-face sealing connection joint Active CN211693871U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921863126.6U CN211693871U (en) 2019-10-31 2019-10-31 Step type double-face sealing connection joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921863126.6U CN211693871U (en) 2019-10-31 2019-10-31 Step type double-face sealing connection joint

Publications (1)

Publication Number Publication Date
CN211693871U true CN211693871U (en) 2020-10-16

Family

ID=72786064

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921863126.6U Active CN211693871U (en) 2019-10-31 2019-10-31 Step type double-face sealing connection joint

Country Status (1)

Country Link
CN (1) CN211693871U (en)

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