CN210196771U - Internal thread pipeline sealing head - Google Patents

Abstract

The utility model relates to a pipe joint field, in particular to pipeline sealing head, include: a body; one end of the body is provided with a joint; inner joint: the inner joint is a rigid annular structure, and external threads are arranged on the circumference of the inner joint and can be matched with the internal threads of the pipeline; the inner joint is fixedly arranged on the body; an external joint: the outer joint is an elastic annular structure and is fixedly arranged on the inner joint; a driving mechanism: the driving mechanism can enable the outer joint to be in an expansion state or a contraction state. Compared with the prior art, the joint is arranged into an inner joint and an outer joint, the inner joint is made of rigid material and is provided with external threads matched with the internal thread pipeline; because the screw thread of outer joint directly twists pipeline internal thread bottom, the inner joint directly does not have the smooth position contact of screw thread with the pipeline, has avoided the problem of revealing that the thread gap caused.

Description

Internal thread pipeline sealing head

Technical Field

The utility model relates to a pipe joint field, in particular to pipeline sealing head.

Background

The quick connector is a connector which can realize the connection or disconnection of pipelines without workpieces. At present, tools such as a wrench are basically utilized to perform hand-screwing connection when the quick connector is connected with an internal thread pipeline, generally, sealing glue needs to be arranged on a thread part, and the connection process is complex. Many times, the internally threaded pipe only needs to be temporarily sealed, and after the seal is released, the internally threaded pipe can be connected with other pipes or valves. The manual connection mode is time-consuming and labor-consuming, and the sealing tape or the sealing glue is troublesome to remove. There is a need for a quick connector that can make a quick connect seal with internally threaded pipes.

A quick connector is disclosed in the chinese utility model patent with publication number CN 207406957U; according to the method, an elastic joint extends out of a body, the elastic joint is inserted into an internal threaded pipe, and a driving mechanism is used for driving a conical expanding head to move towards the elastic joint, so that the radius of the elastic joint is expanded, and a pipeline opening is blocked. But in practice leakage problems occur when the pressure in the pipe is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an internal thread pipeline sealing head, this internal thread pipeline sealing head can be firm install in the internal thread pipeline, realize the sealed to the pipeline simultaneously.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this: an internally threaded pipe seal head, comprising:

the connector comprises a body, wherein one end of the body is provided with a connector, and a driving mechanism is arranged in the body;

a joint disposed at one end of the body, the joint including an inner joint and an outer joint;

the inner joint is of a rigid annular structure, and is provided with external threads in the circumferential direction and can be matched with the internal threads of the pipeline; the inner joint is fixedly arranged on the body;

the outer joint is of an elastic annular structure and is fixedly arranged on the inner joint;

the driving mechanism can enable the outer joint to be in an expansion state or a contraction state, the driving mechanism comprises a transmission rod and a handle, and one end of the transmission rod penetrates through the inner joint and the outer joint and is connected with an expansion head; the opening head is positioned at the center of the outer joint and can enable the outer joint to be in an opening state of being tightly attached to the inner wall of the pipeline;

the other end of the transmission rod is connected with a handle, and at least one part of the handle is positioned outside the body and can drive the transmission rod to move.

Preferably, the internal thread pipeline sealing head further comprises a spring, one end of the spring is fixed on the body, and the other end of the spring is connected with the transmission part; the spring can pull the spreader head into the outer joint.

Preferably, the handle is connected with the middle part and hinged to the body, and one end of the handle is hinged to one end, far away from the opening end, of the transmission rod; and one end of the handle, which is far away from the transmission rod, is provided with a holding structure.

Preferably, the transmission rod comprises two sections, one end of the transmission rod is provided with a first transmission rod connected with the handle, the other end of the transmission rod is connected with the opening head, and the free ends of the first transmission rod and the second transmission rod are hinged with each other; the second drive link is slidably mounted on the body.

Preferably, the handle of the person to be referred to is connected with the body through a ratchet mechanism, and the ratchet mechanism enables the handle to freely move the supporting head into the outer joint, and prevents the handle from moving reversely.

Preferably, the ratchet mechanism comprises a ratchet wheel and a pawl, the ratchet wheel is fixedly mounted on the body, and the pawl is arranged on the handle.

Preferably, the ratchet mechanism further comprises a reversing shifting piece, the reversing shifting piece is rotatably mounted on the handle, and one end of the annular shifting piece is fixedly connected with the other end of the pawl to form a structure capable of enabling a hand to rotate the reversing shifting piece.

Preferably, the diameter of the outer joint is smaller than the small diameter of the outer thread of the inner joint.

Preferably, the outer joint is provided with an annular protrusion at the periphery thereof, and the central axis of the protrusion coincides with the central axis of the outer joint.

Preferably, the nipple has an axial length greater than the depth of the internal thread of the pipe.

In the prior art, a plurality of joints consisting of elastic thread clamping pieces are inserted into a pipeline, and then a spreading head is inserted into the joints.

Compared with the prior art, the utility model has the advantages that the joint is arranged into an inner joint and an outer joint, the inner joint is made of rigid material and is processed with external threads matched with an internal thread pipeline, when in use, the threads of the inner joint are screwed on the bottom of the pipeline, and the joint and the whole device are firmly connected to the pipeline through thread matching; the end-to-end connection at the inner joint has the outer joint, the outer joint is annular elastic material, and the center is provided with the joint of strutting simultaneously, and outer joint and pipeline inner wall in close contact with when strutting the joint and strutting the big outer joint, because the screw thread of outer joint directly twists pipeline internal thread bottom, the inner joint directly does not have the smooth position contact of screw thread with the pipeline, has avoided the problem of revealing that the thread gap caused.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and 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 undue limitation. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a schematic view of the connection between the internally threaded pipe end socket and the pipe of the present invention;

fig. 4 is a hair growth diagram B in fig. 3.

Description of reference numerals:

1-body 2-joint

2A-inner joint 2B-outer joint

3-pipeline 4-opening head

5-drive rod 5A-first drive rod

5B-second transmission rod 6-handle

7-spring 8-ratchet mechanism

8A-ratchet 8B-pawl

8C-plectrum

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to fig. 1; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides an internal thread pipeline sealing head, as shown in fig. 1 to fig. 4, internal thread pipeline sealing head includes:

the device comprises a body 1, wherein one end of the body 1 is provided with a joint 2, and a driving mechanism is arranged in the body 1;

the joint 2 is arranged at one end of the body 1, and the joint 2 comprises an inner joint 2A and an outer joint 2B;

the pipe fitting comprises a nipple 2A, wherein the nipple 2A is of a rigid annular structure, and external threads are arranged on the circumferential direction of the nipple 2A and can be matched with the internal threads of the pipe 3; the inner joint 2A is fixedly arranged on the body 1;

the outer joint 2B is an elastic annular structure, and the outer joint 2B is fixedly arranged on the inner joint 2A;

the driving mechanism can enable the outer joint 2B to be in an expansion state or a contraction state, the driving mechanism comprises a transmission rod 5 and a handle 6, and one end of the transmission rod 5 penetrates through the inner joint 2A and the outer joint 2B and is connected with an expansion joint 4; the opening head 4 is positioned at the center of the outer joint 2B and can enable the outer joint 2B to be in an opening state of being tightly attached to the inner wall of the pipeline 3; the other end of the transmission rod 5 is connected with a handle 6, and at least one part of the handle 6 is positioned outside the body 1 and can drive the transmission rod 5 to move.

In a specific embodiment, as shown in fig. 1, in order to avoid the problem that the fluid in the pipe 3 under pressure is generally gas or liquid leaking from the thread gap, the present invention mainly advances the design of the joint 2, where the joint 2 has two main parts, an inner joint 2A and an outer joint 2B; the inner joint 2A is a tubular structure fixedly mounted on the body 1, preferably, as shown in fig. 1, one end of the body 1 is provided with a mounting hole, one end of the inner joint 2A can be matched with the mounting hole and inserted into the mounting hole, and then the inner joint 2A and the body 1 are fixed with each other by a fastening screw; the other end of the inner joint 2A is processed with an external thread, the external thread can be matched with the internal thread of the pipeline 3 and can be arranged at the bottom of the internal thread of the pipeline 3, and two embodiments are provided for realizing the above effects, wherein one embodiment is as shown in figure 1, a neck part with a certain length L is arranged between one end of the inner joint 2A with the external thread and one end of the insertion body 1, the radius of the neck part is smaller than that of the small diameter of the external thread, the axial length of the external thread is L, and the length of L + L is larger than the depth of the internal thread of the pipeline 3. The second solution is to directly provide an external thread having an axial length greater than the depth of the internal thread of the pipe 3.

An outer joint 2B is fixedly connected to one end, far away from the body 1, of the inner joint 2A, the outer joint 2B is of a hollow annular structure, and the outer joint 2B is made of elastic materials and preferably made of rubber materials; the axis coincidence of outer joint 2B and nipple 2A, outer diameter size of outer joint 2B is less than the path of external screw thread on the nipple 2A simultaneously, and outer diameter of outer joint 2B is less than the internal diameter of female screw pipeline 3 promptly for outer joint 2B can be unhindered insert in the pipeline 3.

Meanwhile, in order to seal the pipeline 3, the utility model also has a driving mechanism, the driving mechanism comprises a spreading joint 4, the spreading joint 4 can move into the central hole of the annular outer joint 2B, because the outer joint 2B is made of elastic material, the spreading joint 4 can spread the outer joint 2B, so that the maximum outer diameter of the outer joint 2B is larger than the inner diameter of the pipeline 3, or when the outer joint 2B is positioned in the pipeline 3, the outer joint 2B is clung to the pipeline 3; meanwhile, the opening 4 can tightly block the inner hole of the outer joint 2B, so that the effect of sealing the pipeline 3 is achieved.

When the pipeline opening and closing device works, the opening 4 is located outside an inner hole of the outer joint 2B, in the pipeline 3 assembled with the inner joint 2A, the thread of the inner joint 2A rotates to the bottom of the thread of the pipeline 3, the outer joint 2B is located on the smooth pipe wall part of the pipeline 3 without the thread, then the opening 4 moves into the external thread pipeline 3, the opening 4 expands the outer diameter of the outer joint 2B to enable the outer joint 2B to be tightly attached to the inner wall of the pipeline 3, meanwhile, the opening 4 seals the central hole of the outer joint 2B, so that the whole pipeline 3 is sealed, the inner joint 2A made of rigid materials is connected with the pipeline 3 through the thread, the connection is firm, and the inner joint is not easy to loosen.

The driving mechanism for driving the supporting head 4 to move further comprises a transmission rod 5 and a handle 6, wherein the transmission rod 5 penetrates through the whole inner joint 2A and the whole outer joint 2B to connect the supporting head 4, one end of the handle 6 is hinged on the body 1, and the middle of the handle 6 is hinged with one end of the transmission rod 5 far away from the supporting head 4, so that the handle 6 drives the transmission to change the movement of the supporting head 4 by using a lever substantially.

According to the utility model discloses an internal thread pipeline sealing head is still including spring 7, spring 7 one end is linked on body 1 other end connection transfer line 5, and as shown in fig. 1, spring 7 can drive transfer line 5 when not receiving external force and will prop head 4 and bring into in outer joint 2B. When the pipe joint is used, a person applies acting force to the handle 6 to separate the opening head 4 from the outer joint 2B, then the joint 2 is connected with the pipe 3, the acting force of the handle 6 is removed, and the opening head 4 is pushed back into the outer joint 2B again under the action of the spring 7. In order to apply acting force to the handle 6 to overcome the elastic force of the spring 7, the handle 6 is connected with the middle part and hinged to the body 1, and one end of the handle 6 is hinged to one end, away from the spreading head 4, of the transmission rod 5; one end of the handle 6, which is far away from the transmission rod 5, is provided with a holding structure.

Preferably, the axis of the transmission rod 5 is offset from the axis of the joint 2 due to the rotation of the handle 6, and in order to overcome this offset, the transmission rod 5 comprises two sections, one end of which is provided with a second transmission rod 5B connected with the handle 6 and one end of which is provided with a first transmission rod 5A connected with the spreader head 4, and the second transmission rod 5B is hinged with the free end of the first transmission rod 5A; the first transmission rod 5A is slidably mounted on the body 1. The transmission rod 5 is divided into a second transmission rod 5B and a first transmission rod 5A, and the axis deviation of the transmission rod 5 is controlled on the second transmission rod 5B, so that the first transmission rod 5A is always coincided with the axis direction of the joint 2, and the sliding of the first transmission rod 5A in the inner joint 2A and the body 1 is kept.

In the process of connecting the joint 2 and the pipeline 3, the threads of the inner joint 2A and the pipeline 3 need to be matched with each other, the whole device can be rotated in the whole process, meanwhile, the acting force of a person on the handle 6 cannot be interrupted, and the operation process is inconvenient. Therefore the utility model discloses still at handle 6 with connect through ratchet 8 between the body 1, ratchet 8 can make handle 6 can be free will prop the head 4 and move to in the outer joint 2B, prevent simultaneously handle 6 reverse motion.

Preferably, as shown in fig. 4, the ratchet mechanism 8 comprises a ratchet wheel 8A and a pawl 8B, the ratchet wheel 8A is fixedly mounted on the body 1, and the pawl 8B is arranged on the handle 6.

In order to facilitate the return of the handle 6 after the installation is completed, the ratchet mechanism 8 further comprises a reversing shifting piece 8C, the reversing shifting piece 8C is rotatably installed on the handle 6, and one end of the annular shifting piece 8C is fixedly connected with the pawl 8B, and the other end of the annular shifting piece is formed with a structure capable of enabling a hand to rotate the reversing shifting piece 8C. The pulling piece 8C is connected with the pawl 8B, the pawl 8B can be separated from the ratchet wheel 8A by rotating the pulling piece 8C, or the pawl 8B can move back to the position of the ratchet wheel 8A in the reverse direction, preferably, the pulling piece 8C is connected with the handle 6 through an elastic piece, the pawl 8B is pulled into the ratchet wheel 8A, and the pawl 8B can be prevented from being separated from the ratchet wheel 8A naturally.

Preferably, the diameter of the outer joint 2B is smaller than the small diameter of the outer thread of the inner joint 2A.

Preferably, the outer joint 2B is provided with an annular protrusion on the outer periphery thereof, and the central axis of the protrusion coincides with the central axis of the outer joint 2B.

Preferably, the axial length of nipple 2A is greater than the depth of the internal thread of pipe 3.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An internally threaded pipe seal head, comprising:

the device comprises a body (1), wherein one end of the body (1) is provided with a joint (2), and a driving mechanism is arranged in the body (1);

the joint (2) is arranged at one end of the body (1), and the joint (2) comprises an inner joint (2A) and an outer joint (2B);

the pipe joint comprises a nipple (2A), wherein the nipple (2A) is of a rigid tubular structure, and external threads are arranged on the circumference of the nipple (2A) and can be matched with internal threads of a pipeline (3); the inner joint (2A) is fixedly arranged on the body (1);

the outer joint (2B) is of an elastic annular structure, and the outer joint (2B) is fixedly arranged on the inner joint (2A);

the driving mechanism can enable the outer joint (2B) to be in an expansion state or a contraction state, the driving mechanism comprises a transmission rod (5) and a handle (6), and one end of the transmission rod (5) penetrates through the inner joint (2A) and the outer joint (2B) and is connected with a support head (4); the opening head (4) is positioned at the center of the outer joint (2B) and can enable the outer joint (2B) to be in an opening state of being tightly attached to the inner wall of the pipeline (3);

the other end of the transmission rod (5) is connected with a handle (6), and at least one part of the handle (6) is positioned outside the body (1) and can drive the transmission rod (5) to move.

2. The internal thread pipeline sealing head according to claim 1, further comprising a spring (7), wherein one end of the spring (7) is fixed on the body (1), and the other end of the spring is connected with the transmission rod (5); the spring (7) can pull the spreading joint (4) into the outer joint (2B).

3. The internally threaded pipe sealing head according to claim 1, wherein one end of the handle (6) is hinged to the body (1), and the middle of the handle (6) is hinged to one end of the transmission rod (5) away from the spreading head (4); and one end of the handle (6) far away from the transmission rod (5) is provided with a holding structure.

4. The internally threaded pipe sealing head according to claim 3, wherein the transmission rod (5) comprises two sections, one end of which is provided with a second transmission rod (5B) connected with the handle (6) and the other end of which is connected with the spreader head (4), the second transmission rod (5B) and the free end of the first transmission rod (5A) are hinged with each other;

the first transmission rod (5A) is slidably mounted on the body (1).

5. The internally threaded pipe sealing head according to any one of claims 1 to 4, wherein the handle (6) and the body (1) are connected by a ratchet mechanism (8), the ratchet mechanism (8) enabling the handle (6) to freely move the spreader (4) into the outer joint (2B) while preventing the handle (6) from moving in the opposite direction.

6. The internally threaded pipe sealing head according to claim 5, wherein the ratchet mechanism (8) comprises a ratchet wheel (8A) and a pawl (8B), the ratchet wheel (8A) being fixedly mounted on the body (1), the pawl (8B) being provided on the handle (6).

7. The internally threaded pipe sealing head of claim 6, wherein said ratchet mechanism (8) further comprises a reversing paddle (8C), said reversing paddle (8C) being rotatably mounted on said handle (6), one end of said reversing paddle (8C) being fixedly connected to said pawl (8B) and the other end thereof forming a structure enabling a hand to rotate said reversing paddle (8C).

8. The internally threaded pipe seal according to claim 1, characterized in that the diameter of the outer joint (2B) is smaller than the minor diameter of the external thread of the inner joint (2A).

9. The internally threaded pipe seal according to claim 1, characterized in that the outer circumference of the outer joint (2B) is provided with an annular projection, the central axis of which coincides with the central axis of the outer joint (2B).

10. The internally threaded pipe sealing head according to claim 1, characterized in that the nipple (2A) has an axial length greater than the depth of the internal thread of the pipe (3).

Images