CN206191078U - Reducer union - Google Patents

Abstract

The embodiment of the utility model provides a reducer union. Reducer union connects the body and includes first screw portion, second screw portion and fastening portion including connecting body, fixation nut and sealing washer, and first screw portion and the 2nd the threaded portion do not set up in the both sides of fastening portion, and the diameter of screw for the connection of first screw portion is different with being connected with the diameter of screw of second screw portion, connecting the body and being equipped with the installation in at least one side of the both sides of fastening portion and use external screw thread portion, fixation nut is through the installation with external screw thread portion and joint body threaded connection, the sealing washer includes first sealing washer, and first sealing washer setting is between fastening portion and fixation nut. The embodiment of the utility model provides a reducer union is through guaranteeing the sealed effect between pipeline and the reducer union setting up the sealing washer between fastening portion and the fixation nut. Can realize effectively installing the purpose on surfaces such as the cabinet body with reducer union through setting up fixation nut, need not replacement parts, the fastening mode is simple, and the installation effectiveness is high.

Description

Adjustable joints

technical field

The utility model relates to the field of pipeline connection, in particular to a variable-diameter joint.

Background technique

In the power system, holes need to be reserved in the design of the lead-out wires of the cabinet, but often due to supply errors, mechanical tolerances, etc., the outer diameter of the threaded cable protection pipe outside the cabinet does not match the reserved hole of the cabinet. It is necessary to ream the hole or replace the cable protection tube, and often need to use an open flame to ream the hole, which is very easy to cause damage to the cable and other equipment. As a result, time and economic costs are wasted.

More importantly, the reducing joints in the prior art can only be used to connect the reducing pipes, but not to seal the pipelines at both ends. Especially in some places where the external environment is complicated or the sealing requirements are very strict, it is difficult for the reducing joints in the prior art to ensure the sealing performance of the reducing joint and the connecting pipelines at both ends.

Utility model content

The utility model provides a variable-diameter joint to solve the problem in the prior art that the variable-diameter joint and the pipelines connected to its two ends are not tightly sealed.

To achieve the above purpose, an embodiment of the present utility model provides a reducing joint. The reducing joint includes a joint body, a fixing nut and a sealing ring. The joint body includes a first threaded part, a second threaded part and a fastening part. The first threaded part and the second threaded part are respectively arranged on both sides of the fastening part. The diameter of the connecting thread of the first threaded part is different from the diameter of the connecting thread of the second threaded part; the joint body is provided with an external thread for installation on at least one of the two sides of the fastening part, and the fixing nut is connected with the external thread for installation. The joint body is threaded; the sealing ring includes a first sealing ring, and the first sealing ring is arranged between the fastening part and the fixing nut.

Optionally, external threads for installation are provided on the first threaded portion.

Optionally, the connection thread of the first threaded part and the installation thread are the same external thread.

Optionally, the connecting thread of the first threaded part is an internal thread.

Optionally, the connecting thread of the second threaded portion is an internal thread or an external thread.

Optionally, when the connecting thread is an internal thread, an annular platform is provided in the internal thread, and the sealing ring further includes a second sealing ring, and the second sealing ring is arranged on the annular platform.

Optionally, the outer contour of the fastening part is hexagonal.

Optionally, the fixing nuts are hexagonal nuts.

Optionally, a chamfer structure is provided on the outer edge of the end of the first threaded part and/or the second threaded part.

Optionally, the outer surfaces of the joint body and the fixing nut are sprayed with an anti-corrosion coating.

The advantages and positive effects that the utility model has are:

The reducing joint provided by the embodiment of the utility model can effectively ensure the sealing effect between the pipeline connected to the reducing joint and the reducing joint by providing a sealing ring between the fastening part and the fixing nut. At the same time, the variable diameter joint can be firmly and reliably installed on the surface of the cabinet body and the like by setting the fixing nut, without additional fixing parts, and the fastening method is simple and the installation efficiency is high.

Description of drawings

Fig. 1 is a schematic structural diagram of a reducing joint provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the joint body provided by the embodiment of the present invention;

Fig. 3 is the schematic structure of the fixed nut provided by the utility model embodiment;

Fig. 4 is a schematic structural diagram of the first sealing ring provided by the embodiment of the present invention;

Fig. 5 is an installation schematic diagram of the installation position of the second sealing ring on the joint body provided by the embodiment of the present invention.

Explanation of reference signs:

1. Joint body; 2. Fixing nut; 3. First threaded part; 4. Second threaded part; 5. Fastening part; 6. First sealing ring; 7. Second sealing ring.

detailed description

Exemplary embodiments of embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, an embodiment of the present invention provides a reducing joint. The reducing joint includes a joint body 1, a fixing nut 2 and a sealing ring. The joint body 1 includes a first threaded part 3, a second threaded part 4 and a fastening part 5. The first threaded part 3 and the second threaded part 4 are respectively arranged on On both sides of the fastening part 5, the diameter of the connecting thread of the first threaded part 3 is different from the diameter of the connecting thread of the second threaded part 4; The external thread for installation, the fixed nut 2 is threadedly connected with the joint body 1 through the external thread for installation;

The reducing joint provided by the embodiment of the utility model can effectively ensure the sealing effect between the pipeline connected to the reducing joint and the reducing joint by providing a sealing ring between the fastening part 5 and the fixing nut 2 . At the same time, the variable diameter joint can be firmly and reliably installed on the surface of the cabinet body and the like by setting the fixing nut, without additional fixing parts, and the fastening method is simple and the installation efficiency is high.

Referring to Fig. 1 to Fig. 4, the first threaded part 3 and the second threaded part 4 are respectively connected with two unequal-diameter pipelines, and the fastening part 5 is arranged in the middle of the first threaded part 3 and the second threaded part 4, The purpose of setting it is to facilitate the operator to perform tightening operation when installing the reducing joint, and at the same time, it can also play the role of fixing or rotating the joint body. At least one side of the fastening part 5 is provided with an external thread for installation, and the external thread for installation is used for connecting the fixing nut 2 . By setting the fixing nut 2, the variable diameter joint can be clamped on the cabinet body and other plate parts that need to be pierced with pipelines.

Specifically, take the installation of the reducing joint on the cabinet as an example. The cabinet body is pre-opened with an installation hole for the pipeline to pass through, and the end of the reducing joint provided with the external thread for installation passes through the installation hole from one side of the cabinet body, and then the fixing nut 2 is removed from the cabinet body. The other side of the body is threadedly connected with the external screw thread protruding from the mounting hole, so that the purpose of installing the reducing joint on the cabinet body is realized.

Further, referring to FIG. 1 , in order to ensure a good sealing integrity of the cabinet and to prevent impurities such as dust and water vapor outside the cabinet from entering the cabinet and causing corrosion or aging of the internal parts of the cabinet, between the fastening part 5 and the fixing nut 2 A first sealing ring 6 is also provided. It should be noted that the inner diameter of the first sealing ring 6 should be set slightly smaller or equal to the outer diameter of the first threaded part 3, so as to ensure the best contact between the first sealing ring 6 and the first threaded part 3. Sealing effect.

In this embodiment, the first threaded part 3, the second threaded part 4, the fastening part 5 and the fixing nut 2 can be made of metal or plastic with a certain strength, which can ensure that the first threaded part 3, the second threaded part Part 4, fastening part 5 and fixing nut 2 can withstand long-term stress without large deformation; the first sealing ring 6 can be made of rubber with certain elasticity and anti-aging performance, which can ensure its good sealing performance .

Preferably, the outer contour of the fastening part 5 is hexagonal, and the fixing nut 2 is a hexagonal nut.

Referring to Fig. 2 and Fig. 3 together, in a preferred embodiment, the purpose of setting the fastening part 5 into a hexagonal shape is to facilitate the operator to use a tool such as a wrench to clamp on the fastening part 5, and then tighten the fixing nut 2 The variable diameter joint can be installed on boards such as cabinets. In some other embodiments, the fastening part 5 can also be designed in other forms with regular shapes, and the fixing nut 2 can also be designed as other fixing parts that can realize the cooperation with the external thread for installation.

In some embodiments, as shown in FIG. 2 , external threads for installation are provided on the first threaded portion 3 . In some other embodiments, the external thread for installation can also be provided on the second threaded part 4 or the external thread for installation can be provided on both the first threaded part 3 and the second threaded part 4 . Specifically, when using the reducing joint, it can be flexibly selected according to actual needs.

Optionally, the thread structure on the first threaded part 3 can have the following two types:

1. In an embodiment as shown in FIG. 2 , the connecting thread and the mounting external thread of the first threaded portion 3 are the same external thread. That is to say, the external thread for installation is not only used to connect the fixing nut 2, but also used to connect with the pipeline.

2. In another embodiment not shown in the figure, the connecting thread of the first threaded part 3 is an internal thread. In this embodiment, the thread used to connect the pipeline is an internal thread, and the internal thread is provided on the inner peripheral surface of the first threaded part 3 . The mounting external thread provided on the outer peripheral surface of the first threaded portion 3 is only used for connecting the fixing nut 2 .

In addition, optionally, the connecting thread of the second threaded part 4 is an internal thread or an external thread.

Referring to FIG. 2 , in one embodiment, the connecting thread on the second threaded portion 4 is an internal thread, and the internal thread is provided on the inner peripheral surface of the second threaded portion 4 . In some other embodiments, the connecting thread on the second threaded part 4 may also be an external thread.

Preferably, referring to Fig. 5, when the connecting thread of the first threaded part 3 and/or the second threaded part 4 is an internal thread, an annular platform is arranged inside the internal thread, and the sealing ring also includes a second sealing ring 7, the second The sealing ring 7 is arranged on the annular platform.

It should be noted that the inner diameter of the annular platform should not be set too small, so as not to affect the pipelines connected at both ends, and the width of the annular surface of the annular platform only needs to be able to accommodate the second sealing ring 7 . It should be noted that the outer diameter of the second sealing ring 7 should be set slightly larger or equal to the inner diameter of the first threaded part 3 and/or the second threaded part 4, so as to ensure that the second sealing ring 7 is consistent with the first threaded part. The best sealing effect of the inner peripheral surface of the threaded part 3 and/or the second threaded part 4 .

The purpose of setting the second sealing ring 7 is to effectively ensure the sealing between the pipeline connected to the reducing joint and the reducing joint. For example, when the pipeline connected to the variable diameter joint is used for circulating liquid, it can effectively prevent the liquid from overflowing from the connection between the pipeline and the variable diameter joint. The second sealing ring 7 can also be made of rubber with certain elasticity and aging resistance.

Preferably, chamfering structures are provided on the outer edges of the ends of the first threaded portion 3 and/or the second threaded portion 4 .

In a preferred embodiment, chamfering structures are provided on the outer edges of the ends of the first threaded part 3 and the second threaded part 4 . The purpose of such setting is to facilitate the connection of the pipeline with the reducing joint. Specifically, when the connecting thread on the first threaded part 3 and the second threaded part 4 is an external thread, the chamfering structure should make the ends of the first threaded part 3 and the second threaded part 4 shrink inward, so as to facilitate the connection with The pipelines provided with internal threads are matched and connected; when the connecting threads on the first threaded part 3 and the second threaded part 4 are internal threads, the chamfering structure should make the first threaded part 3 and the second threaded part 4 The end expands outwards, which is convenient for matching and connecting with pipelines provided with external threads.

Preferably, in order to ensure that the reduced diameter joint will not be corroded for a long time, an anti-corrosion coating is sprayed on the outer surface of the joint body 1 and the fixing nut 2 .

The utility model has the following beneficial effects:

The reducing joint provided by the embodiment of the utility model can effectively ensure the sealing effect between the pipeline connected to the reducing joint and the reducing joint by providing a sealing ring between the fastening part and the fixing nut. At the same time, the variable diameter joint can be firmly and reliably installed on the surface of the cabinet body and the like by setting the fixing nut, without additional fixing parts, and the fastening method is simple and the installation efficiency is high.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. a kind of reducer union, it is characterised in that including joint body (1), fixing nut (2) and sealing ring,

The joint body (1) includes the first threaded portion (3), the second threaded portion (4) and fastening part (5), first threaded portion (3) and second threaded portion (4) is separately positioned on the both sides of the fastening part (5), the connection of first threaded portion (3) is used The diameter of screw thread is different from the diameter of the connection screw thread of second threaded portion (4)；

At least side of both sides of the joint body (1) in the fastening part (5) is provided with installation external screw thread, the fixed spiral shell Female (2) are threadedly coupled by the installation external screw thread with the joint body (1)；

The sealing ring includes the first sealing ring (6), and it is solid with described that first sealing ring (6) is arranged on the fastening part (5) Determine between nut (2).

2. reducer union according to claim 1, it is characterised in that the installation external screw thread is located at first screw thread In portion (3).

3. reducer union according to claim 2, it is characterised in that the connection screw thread of first threaded portion (3) with The installation external screw thread is same external screw thread.

4. reducer union according to claim 2, it is characterised in that the connection of first threaded portion (3) is with screw thread Internal thread.

5. reducer union according to claim 2, it is characterised in that the connection of second threaded portion (4) is with screw thread Internal thread or external screw thread.

6. the reducer union according to claim 4 or 5, it is characterised in that when the connection screw thread is internal thread, institute State and annular table is provided with internal thread, the sealing ring also includes the second sealing ring (7), second sealing ring (8) is arranged on institute State in annular table.

7. reducer union according to claim 3, it is characterised in that the outline of the fastening part (5) is hexagon.

8. reducer union according to claim 3, it is characterised in that the fixing nut (2) is hex nut.

9. reducer union according to claim 1, it is characterised in that in first threaded portion (3) and/or the second screw thread The outward flange of the end in portion (4) is provided with chamfering structure.

10. the reducer union according to any one of claim 1 to 5 or 7,8,9, it is characterised in that the joint body And the outer surface of the fixing nut (2) is coated with corrosion-inhibiting coating (1).