CN108180328A - For connecting the watertight connector of reduced pipe - Google Patents

Abstract

The invention discloses a kind of for connecting the watertight connector of reduced pipe, including joint body, further include attaching nut, joint body includes the taper convex body of inner hollow, taper convex body includes straight cylinder pipeline section and tapered cylinder pipeline section, taper convex body is threadedly coupled by the connection screw thread being arranged on the outer wall of straight cylinder pipeline section with Large Diameter Pipeline tubing, and tapered cylinder pipeline section is connect by the attaching nut with tubule diameter pipes.The present invention is when in use, Large Diameter Pipeline tubing by the connection screw thread being arranged on straight cylinder pipeline section outer wall is threadedly coupled, tubule diameter pipes are then threadedly coupled by tapered cylinder pipeline section with attaching nut, realize the tubing connection of different tube diameters, it is easy to operate, time saving and energy saving, and used taper convex body structure is compact, the ring type seal of the attaching nut that is used cooperatively with taper convex body and setting causes tubing to be close-coupled on connector, the good airproof performance of connection can simultaneously sustain the pressure of liquid in pipe generation.

Description

Watertight fittings for connecting reducers

technical field

The invention relates to a pipe connecting joint, in particular to a watertight connecting piece used for connecting pipes with different diameters.

Background technique

With the development of urban construction, pipes are used in many fields and industries. The general pipes include natural gas pipes, supply pipes, sewage pipes and hoses for various purposes. In the fields of construction, chemical industry, machinery, etc., it is necessary to connect pipes with different diameters, especially hoses, which often need to connect large diameters with small diameters. For the connection of hoses with different diameters, it is generally connected with a joint. One end of the joint is large and the other end is small. fasten. This connection method is not only cumbersome to operate, but also has a thin structure and cannot bear the relatively high pressure in the pipe. Leakage often occurs at the connection, which is inconvenient to use.

For the above-mentioned defects, there is no report about the different-diameter pipe joint in the prior art. Therefore, it will be possible to develop a different-diameter pipe joint with a simple structure, a large internal pressure in the pipe, strong durability and simple operation. It is conducive to improving the development of this field of pipes.

Contents of the invention

In view of the above-mentioned deficiencies, the technical problem to be solved by the present invention is to provide a watertight connector for connecting different-diameter pipes with a simple structure and easy operation.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

A watertight connector for connecting different-diameter pipes, including a joint body and a connecting nut, the joint body includes a hollow conical convex body, and the conical convex body includes a straight cylindrical pipe section as a large-diameter end and As the tapered cylindrical pipe section at the end of the small pipe diameter, the straight cylindrical pipe section and the tapered cylindrical pipe section are integrally formed; the tapered convex body is screwed to the large diameter pipe through the connecting thread arranged on the outer wall of the straight cylindrical pipe section , the tapered cylindrical pipe section is connected with the small-diameter pipe through the connecting nut.

In the above solution, in order to facilitate holding and operation, an annular fixing block can be installed on the conical convex body between the straight cylindrical pipe section and the tapered cylindrical pipe section.

In the above scheme, the specific structure of the tapered cylindrical pipe section and the connecting nut used to connect the small diameter pipe to the tapered convex body can be as follows: the outer wall of the tapered cylindrical pipe section is evenly provided with connecting threads, and the connecting thread The nut is threadedly connected to the tapered cylindrical pipe section through the thread provided on the inner wall of the connecting nut. The circular hole in the connecting nut has a conical structure and extends along the direction of the minimum diameter of the circular hole. The conical structure is in line with the tapered cylinder. Pipe segment sizes match.

In the above solution, in order to further improve the airtightness of the connection between the tapered cylindrical pipe section and the pipe material, an annular slot can be provided in the circular hole of the conical structure, and an annular sealing ring is installed in the annular slot.

The present invention also discloses another specific implementation structure of the tapered cylindrical pipe section and the connecting nut used to connect small-diameter pipes to the tapered convex body: the tapered convex body also includes a hollow connecting pipe, the The hollow connecting pipe is sleeved on the outer wall of the tapered cylindrical pipe section and one end of the hollow sleeve is fixed on the annular fixing block, and the inner wall of the hollow sleeve is evenly provided with connecting threads; the connecting nut is arranged on the outer wall of the connecting nut The thread on the thread is threadedly connected with the tapered cylindrical pipe section.

In the above solution, in order to facilitate operation and increase the rigidity of the connecting nut, an annular protrusion may be installed on the outer wall of the connecting nut, and the annular protrusion and the outer wall of the connecting nut are integrally formed.

The beneficial effects of the present invention are:

1) The watertight connector of the present invention is mainly composed of a joint body and a connecting nut. The joint body used is a hollow conical convex body, and the conical convex body is divided into an integrally formed straight cylindrical pipe section and a cone with a gradually decreasing inner diameter. When in use: for large diameter pipes, it is threaded through the connecting thread provided on the outer wall of the straight cylindrical pipe section, while for small diameter pipes, it is threaded through the tapered cylindrical pipe section and the connecting nut. The connection of pipes with different pipe diameters is realized, and the operation is simple, time-saving and labor-saving;

2) The conical convex body adopted is compact in structure, the connecting nut used in conjunction with the conical convex body and the ring sealing ring are arranged, and the pipe is tightly connected to the joint, which not only has good sealing performance of the connection, but also can withstand the pressure generated by the liquid in the pipe. Pressure, simple structure, easy to use, can be reused, and has strong practicability.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the watertight connector used to connect the reducer when it is in use.

Fig. 2 is another structural schematic view of the watertight connector used for connecting different diameter pipes in use.

Fig. 3 is a schematic structural view of the joint body.

Fig. 4 is a schematic cross-sectional structure diagram of a connecting nut matching with the joint body in Fig. 3 .

FIG. 5 is another schematic cross-sectional structure diagram of the connecting nut in FIG. 4 .

Fig. 6 is another structural schematic diagram of the joint body.

Fig. 7 is a schematic cross-sectional structure diagram of a connecting nut matching with the joint body in Fig. 6 .

FIG. 8 is another schematic cross-sectional structure diagram of the connecting nut in FIG. 7 .

The numbers in the figure are: 1. Joint body, 1-1, conical convex body, 1-2, connecting thread, 1-3, ring fixing block, 1-4, hollow connecting pipe, 2. connecting nut, 2-1 , Annular bump, 3, Annular sealing ring, 4, Large diameter pipe, 5, Small diameter pipe, 6, Thread, 7, Round hole, 8, Annular groove, 9, Straight cylindrical pipe section, 10, Taper Cylindrical pipe section.

Detailed ways

Example 1

A watertight connecting piece for connecting reducers, including a joint body 1 and a connecting nut 2 . As shown in FIG. 6, the joint body 1 includes a hollow connecting pipe 1-4 and a hollow conical convex body 1-1 inside. The tapered convex body 1-1 includes a straight cylindrical pipe section 9 as a large diameter end and a tapered cylindrical pipe section 10 as a small pipe diameter end. The straight cylindrical pipe section 9 and the tapered cylindrical pipe section 10 are integrally formed. Wherein the tapered cylindrical pipe section 10 is provided with pipe diameter gradually reduced successively, further: an annular fixed block 1-3 is installed on the conical convex body 1-1 between the straight cylindrical pipe section 9 and the tapered cylindrical pipe section 10 . The hollow connecting pipe 1-4 is sheathed on the outer wall of the tapered cylindrical pipe section 10 and one end of the hollow sleeve is fixed on the annular fixing block 1-3. Connecting threads 1-2 are uniformly arranged on the inner wall of the hollow sleeve.

As shown in FIG. 7 and FIG. 8 , the connecting nut 2 is connected with the thread 6 of the tapered cylindrical pipe section 10 through the thread 6 provided on the outer wall of the connecting nut 2 . In order to increase the rigidity of the connecting nut 2 and facilitate gripping and operation, an annular protrusion 2 - 1 is installed on the outer wall of the connecting nut 2 , and the annular protrusion 2 - 1 is integrally formed with the outer wall of the connecting nut 2 .

As shown in Figure 1, the conical convex body 1-1 is connected with the thread 6 of the large-diameter pipe 4 through the connecting thread 1-2 arranged on the outer wall of the straight cylindrical pipe section 9, and the tapered cylindrical pipe section 10 passes through the The connecting nut 2 is connected with the small-diameter pipe 5 . In order to increase the airtightness of the connection, an annular sealing ring 3 is sheathed at the junction of the connection nut 2 and the tapered cylindrical pipe section 10 . That is, use a wrench to tighten the conical convex body 1-1 and the connecting nut 2 respectively, and for the large-diameter pipe material 4, connect the conical convex body 1 through the connecting thread 1-2 thread 6 arranged on the outer wall of the straight cylindrical pipe section 9. -1, the other end of the conical convex body 1-1 is connected with the conical cylindrical pipe section 10 through the thread 6 in the connecting nut 2 and the connecting thread 1-2 in the hollow connecting pipe 1-4, realizing two The connection of pipes with different diameters has compact structure, good airtightness, and simple and quick operation.

Example 2

The difference between the watertight connector used to connect the reducer and that in Embodiment 1 is that the structure on the tapered cylindrical pipe section 10 and the structure of the connecting nut 2 used are different. As shown in Figure 3, the outer wall of the tapered cylindrical pipe section 10 is evenly provided with connecting threads 1-2, and the connecting nut 2 is connected to the threaded 6 of the tapered cylindrical pipe section 10 through the thread 6 arranged on the inner wall of the connecting nut 2 . As shown in FIG. 4 and FIG. 5 , the circular hole 7 in the connecting nut 2 has a conical structure and extends along the direction of the smallest aperture of the circular hole 7 , and the conical structure matches the size of the tapered cylindrical pipe section 10 . Further, in order to enhance the airtightness of the connecting piece, an annular slot 8 is specifically provided in the circular hole 7 of the conical structure, and an annular sealing ring 3 is installed in the annular slot 8 .

As shown in Figure 2, the conical convex body 1-1 is connected with the thread 6 of the large-diameter pipe 4 through the connecting thread 1-2 arranged on the outer wall of the straight cylindrical pipe section 9, and the tapered cylindrical pipe section 10 passes through the The connecting nut 2 is connected with the small-diameter pipe 5 . In order to increase the airtightness of the connection, an annular sealing ring 3 is sheathed at the junction of the connecting nut 2 and the annular fixing block 1-3.

The specific operation is: first connect the large-diameter pipe material 4 thread 6 on the outer wall of the straight cylinder and tighten the conical convex body 1-1 with a wrench; then insert the small-diameter pipe material 5 into the circular hole 7 of the connecting nut 2 and Tighten; finally put the connecting nut 2 on the tapered cylindrical pipe section 10, and use a wrench to tighten the connecting nut 2 on the tapered convex body 1-1. The watertight connecting piece of this structure realizes the connection of two pipes with different pipe diameters, and has compact structure, good airtightness and simple and fast operation.

The tapered convex body 1-1, annular fixing block 1-3, hollow connecting pipe 1-4, connecting nut 2 and annular protrusion 2-1 used above can be made of stainless steel or plastic.

The above is only to illustrate the implementation of the present invention, and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be Included within the protection scope of the present invention.

Claims (6)

1. for connecting the watertight connector of reduced pipe, including joint body (1), it is characterised in that：Further include attaching nut (2), taper convex body (1-1) of the joint body (1) including inner hollow, the taper convex body (1-1) is including as big pipe The straight cylinder pipeline section (9) at diameter end and the tapered cylinder pipeline section (10) as pipe with small pipe diameter end, straight cylinder pipeline section (9) and tapered cylinder pipe Section (10) is integrally formed；The taper convex body (1-1) passes through the connection screw thread (1- that is arranged on the outer wall of straight cylinder pipeline section (9) 2) it is connect with Large Diameter Pipeline tubing (4) screw thread (6), tapered cylinder pipeline section (10) passes through the attaching nut (2) and tubule diameter pipes (5) it connects.

2. the watertight connector according to claim 1 for being used to connect reduced pipe, it is characterised in that：In straight cylinder pipeline section (9) an annular fixed block (1-3) is installed on the taper convex body (1-1) between tapered cylinder pipeline section (10).

3. the watertight connector according to claim 2 for being used to connect reduced pipe, it is characterised in that：Tapered cylinder pipeline section (10) connection screw thread (1-2) is evenly arranged on outer wall, the attaching nut (2) is by being arranged on attaching nut (2) inner wall On screw thread (6) connect with tapered cylinder pipeline section (10) screw thread (6), the circular hole (7) in attaching nut (2) is in conical structure And extend along the direction of circular hole (7) minimum-value aperture, the conical structure matches with tapered cylinder pipeline section (10) size.

4. the watertight connector according to claim 3 for being used to connect reduced pipe, it is characterised in that：In conical structure Annular slotted hole (8) is equipped in circular hole (7), ring type seal (3) is installed in the annular slotted hole (8).

5. the watertight connector according to claim 2 for being used to connect reduced pipe, it is characterised in that：The taper convex body (1-1) further includes hollow connection tube (1-4), and the hollow connection tube (1-4) is set on the outer wall of tapered cylinder pipeline section (10) And one end of hollow sleeve is fixed on annular fixed block (1-3), and connection screw thread (1- is evenly arranged in the inner wall of hollow sleeve 2)；The attaching nut (2) passes through the screw thread (6) that is arranged on the outer wall of attaching nut (2) and tapered cylinder pipeline section (10) spiral shell Line (6) connects.

6. the watertight connector according to claim 1 for being used to connect reduced pipe, it is characterised in that：In attaching nut (2) Outer wall on annular lug (2-1) is installed, the annular lug (2-1) and the outer wall of attaching nut (2) are integrally formed.