CN213177238U

CN213177238U - External thread elbow

Info

Publication number: CN213177238U
Application number: CN202022141849.4U
Authority: CN
Inventors: 章辉龙
Original assignee: Zhejiang Puwangte Machinery Co ltd
Current assignee: Zhejiang Puwangte Machinery Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-05-11
Anticipated expiration: 2030-09-25

Abstract

The utility model provides an external thread elbow belongs to mechanical technical field. It has solved the not good problem of current elbow practicality. The external thread elbow comprises a body with a water inlet end and a water outlet end, wherein the water inlet end and the water outlet end are both in a tubular shape and have vertical axes, an external thread I is arranged on the outer wall of the water inlet end, an external thread II is also arranged on the outer wall of the water inlet end, the diameter of the external thread II is larger than or equal to that of the external thread I, the external thread I and the external thread II are axially distributed along the water inlet end, and the external thread II is positioned between the external thread I and the water outlet end; a gap is formed between the first external thread and the second external thread, the shape of the water inlet end at the gap position is a cylindrical surface, and the diameter of the cylindrical surface is smaller than that of the first external thread; the second external thread is connected with a ring body in a threaded mode, the end face, close to the first external thread, of the ring body is attached to and fixed with an annular sealing gasket, and the inner side wall of the annular sealing gasket is attached to the cylindrical surface. The external thread elbow has good practicability.

Description

External thread elbow

Technical Field

The utility model belongs to the technical field of machinery, a elbow, especially an external screw thread elbow is related to.

Background

In a piping system, a bend is a pipe that changes the direction of a pipe. The angle is divided into three types of most common angles of 45 degrees, 90 degrees and 180 degrees, and other abnormal angle elbows of 60 degrees and the like are further included according to engineering requirements.

Current 90 degrees elbows generally include the body, have the axis vertical end of intaking and go out the water end on the body, and intake and all have connecting thread on the end of going out water. When the water inlet end is provided with the external thread, the existing method is to form an annular convex shoulder on the outer wall of the water inlet end, and the annular convex shoulder is provided with a sealing ring for sealing, so that the use is more convenient. However, this approach has a problem: the position that sets up of sealing washer is fixed unchangeable, leads to it to satisfy a sealed position only, when touchhing the sealed position of pipe fitting and having the requirement, its unable satisfaction, the practicality is not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided an external screw thread elbow that the practicality is good.

The purpose of the utility model can be realized by the following technical proposal: an external thread elbow comprises a body with a water inlet end and a water outlet end, wherein the water inlet end and the water outlet end are both in a tubular shape and have vertical axes, and an external thread I is arranged on the outer wall of the water inlet end; a gap is formed between the first external thread and the second external thread, the shape of the water inlet end at the gap position is a cylindrical surface, and the diameter of the cylindrical surface is smaller than that of the first external thread; the second external thread is in threaded connection with a ring body, the end face of the ring body, close to the first external thread, is attached to and fixed with an annular sealing gasket, and the inner side wall of the annular sealing gasket is attached to the cylindrical surface.

During installation, the water inlet end is connected with the water inlet pipeline through the first external thread, and the end face of the water inlet pipeline is pressed on the annular sealing gasket to form sealing. When the water inlet pipe is used, the rotating ring body can push the annular sealing gasket to axially slide at the water inlet end so as to change the distance between the annular sealing gasket and the water inlet end face, so that different lengths reserved after the water inlet pipe is screwed into the water inlet end are met, and the water inlet pipe has better practical performance.

In the external thread elbow, one side of the annular sealing gasket, which is far away from the first external thread, is integrally formed with an annular connecting part, the connecting part is sleeved on the ring body, and the inner side wall of the connecting part is in close contact with the outer side wall of the ring body. The connecting part can increase the contact area of the annular sealing gasket and the ring body to enhance the connection strength of the annular sealing gasket and the ring body, and can realize sealing through the contact of the outer wall and the inner wall of the water inlet pipeline in practical application to further enhance the application range.

In the external thread elbow, the ring body is formed with a pipe body coaxial with the ring body, the ring body is positioned between the pipe body and the annular sealing gasket, and the pipe body is in threaded connection with the external thread II. The tube body is arranged and used for prolonging the length of the ring body so as to be convenient to hold and rotate.

In the external thread elbow, a conical guide surface is arranged on the inner wall of one end, away from the annular sealing gasket, of the connecting part, so that the connecting part is more smoothly sleeved on the ring body.

In the above-mentioned external thread elbow, the annular sealing gasket is connected with the ring body through the bonding mode.

In the external thread elbow, the outer wall of the water outlet end is provided with a third external thread.

Compared with the prior art, the external thread elbow has the following advantages:

1. when the water inlet pipe is used, the rotating ring body can push the annular sealing gasket to axially slide at the water inlet end so as to change the distance between the annular sealing gasket and the water inlet end face, so that different lengths reserved after the water inlet pipe is screwed into the water inlet end are met, and the water inlet pipe has better practical performance.

2. The connecting part can increase the contact area of the annular sealing gasket and the ring body to enhance the connection strength of the annular sealing gasket and the ring body, and can realize sealing through the contact of the outer wall and the inner wall of the water inlet pipeline in practical application to further enhance the application range.

Drawings

Fig. 1 is a schematic structural view of an externally threaded elbow.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

In the figure, 1, a body; 1a, a water inlet end; 1a1, a first external thread; 1a2 and a second external thread; 1b, a water outlet end; 1c, a water passing cavity; 1d, a cylindrical surface; 2. a ring body; 2a, a pipe body; 3. an annular seal; 3a, a connecting part; 3b, a guide surface.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the external threaded elbow comprises a body 1 having a water inlet end 1a and a water outlet end 1b, wherein the water inlet end 1a and the water outlet end 1b are both tubular and have vertical axes, and the water inlet end 1a and the water outlet end 1b are communicated through a water passing cavity 1c arranged in the body 1.

Wherein, the outer wall of the water outlet end 1b is provided with a third external thread; the outer wall of the water inlet end 1a is provided with a first external thread 1a1, the outer wall of the water inlet end 1a is further provided with a second external thread 1a2, the diameter of the second external thread 1a2 is larger than or equal to that of the first external thread 1a1, the first external thread 1a1 and the second external thread 1a2 are axially distributed along the water inlet end 1a, and the second external thread 1a2 is located between the first external thread 1a1 and the water outlet end 1 b. In this embodiment, the first external thread 1a1 and the second external thread 1a2 are preferably the same diameter.

As shown in fig. 1 and 2, a gap exists between the first external thread 1a1 and the second external thread 1a2, the shape of the water inlet end 1a at the gap position is a cylindrical surface 1d, and the diameter of the cylindrical surface 1d is smaller than that of the first external thread 1a 1. The second external thread 1a2 is screwed with the ring body 2, the end face of the ring body 2 close to the first external thread 1a1 is attached and fixed with the annular sealing gasket 3, the shape and the size of the inner side wall of the annular sealing gasket 3 are matched with the cylindrical surface 1d, and the two are attached together. Further, in the present embodiment, the annular sealing gasket 3 is fixedly connected to the ring body 2 by bonding; one side of the annular sealing gasket 3, which is far away from the first external thread 1a1, is integrally formed with an annular connecting part 3a, the connecting part 3a is sleeved on the ring body 2, and the inner side wall of the connecting part 3a is in close contact with the outer side wall of the ring body 2. Connecting portion 3a both can increase the area of contact of annular seal pad 3 and ring body 2, strengthen the joint strength of annular seal pad 3 and ring body 2, can realize sealing through outer wall and inlet channel inner wall contact again when practical application, strengthen application scope.

As shown in fig. 2, a tapered guide surface 3b is disposed on an inner wall of one end of the connecting portion 3a away from the annular sealing gasket 3, so that the connecting portion 3a can be smoothly sleeved on the ring body 2. And a pipe body 2a coaxial with the ring body 2 is formed on the ring body 2, the ring body 2 is positioned between the pipe body 2a and the annular sealing gasket 3, and the pipe body 2a is screwed on the external thread II 1a 2. A pipe body 2a is provided for extending the length of the ring body 2 so as to be held for rotation.

During the installation, intake end 1a is connected with the inlet channel through external screw thread 1a1, and the inlet channel terminal surface supports to press on annular sealing pad 3 or connecting portion 3a outer wall and the contact of inlet channel inner wall form sealedly. During the use, rotate the ring body 2 and can promote annular packing 3 and slide in the end 1a axial direction of intaking to change annular packing 3 and the distance between the end 1a terminal surface of intaking, thereby satisfy the different length that reserves behind the inlet channel screw in end 1a of intaking, possess better practicality.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An external thread elbow comprises a body (1) with a water inlet end (1a) and a water outlet end (1b), wherein the water inlet end (1a) and the water outlet end (1b) are both in a tubular shape and have vertical axes, and a first external thread (1a1) is arranged on the outer wall of the water inlet end (1a), and is characterized in that a second external thread (1a2) is further arranged on the outer wall of the water inlet end (1a), the diameter of the second external thread (1a2) is larger than or equal to that of the first external thread (1a1), the first external thread (1a1) and the second external thread (1a2) are axially distributed along the water inlet end (1a), and the second external thread (1a2) is positioned between the first external thread (1a1) and the water outlet end (1 b); a gap exists between the first external thread (1a1) and the second external thread (1a2), the shape of the water inlet end (1a) at the gap position is a cylindrical surface (1d), and the diameter of the cylindrical surface (1d) is smaller than that of the first external thread (1a 1); the second external thread (1a2) is screwed with the ring body (2), the end face of the ring body (2) close to the first external thread (1a1) is attached and fixed with the annular sealing gasket (3), and the inner side wall of the annular sealing gasket (3) is attached to the cylindrical surface (1 d).

2. The externally threaded elbow according to claim 1, wherein the annular sealing gasket (3) is integrally formed with a ring-shaped connecting portion (3a) at a side thereof remote from the external thread (1a1), the connecting portion (3a) is fitted over the ring body (2), and an inner sidewall of the connecting portion (3a) is in close contact with an outer sidewall of the ring body (2).

3. Externally threaded elbow according to claim 1 or 2, characterized in that the ring (2) is provided with a tubular body (2a) coaxial therewith, the ring (2) being located between the tubular body (2a) and the annular seal (3), and the tubular body (2a) being screwed onto the second external thread (1a 2).

4. An externally threaded elbow according to claim 2, characterized in that the inner wall of the end of the connecting part (3a) remote from the annular sealing gasket (3) is provided with a conical guide surface (3 b).

5. Externally threaded elbow according to claim 1 or 2, characterized in that the annular seal (3) is secured to the ring body (2) by means of gluing.

6. The externally threaded elbow according to claim 1, characterized in that the outer wall of the water outlet end (1b) is provided with a third external thread.