CN204387524U - Flange-type jointing assembly - Google Patents

Abstract

The utility model provides a flange connection joint assembly, which includes a flange connection joint, a ferrule and a ferrule nut, wherein: the flange connection joint has a base with a flange flange, One end of the base is provided with an external thread section, which is used to thread the ferrule nut, and a channel is provided inside the flange connection joint; the ferrule is a hollow ring, used to connect a pipe One end of the ferrule abuts against the end of the external thread section; the ferrule nut is provided with an internal thread section, and the internal thread section is threadedly connected to the flanged joint, so that the ferrule locks Connected in the ferrule nut, the end face of the ferrule nut is provided with a through hole for the pipe to pass through. The connection between the gear pump oil port and the pipeline provided by the flange connection joint assembly of the utility model does not require welding, has a simple structure, does not require accessories, is convenient for installation and maintenance, low in manufacturing cost, reliable in operation, and high in pressure resistance.

Description

Flanged Connector Assemblies

technical field

The utility model relates to a connection part, in particular to a flange type connection joint assembly.

Background technique

The gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gear to deliver or pressurize the liquid. Two closed spaces are composed of two gears, the pump body and the front and rear covers. When the gears rotate, the volume of the space on the side where the gears are disengaged increases from small to large, forming a vacuum to suck the liquid, and the volume of the space on the side where the gears mesh changes from large to large. Small, and the liquid is squeezed into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of two gears. The pressure at the outlet of the gear pump depends entirely on the resistance at the pump outlet.

At present, the connection between the oil suction port of the gear pump and the steel pipe is usually welded, but welding will lead to a permanent connection between the oil suction port of the gear pump and the steel pipe. If the pipe needs to be replaced, the pipe needs to be cut, which is very inconvenient . Moreover, the welding method is not environmentally friendly enough, which will pollute the environment. What's more, some customers with high requirements do not allow the connection in the oil circuit to use welding, so this requires other alternatives to realize the connection between the oil suction port of the gear pump and the steel pipe.

However, these alternatives often require multiple additional parts to realize, the structure is more complicated, it is inconvenient to install and maintain, and the cost is also high, and there are also problems such as low pressure resistance level, small oil passage, low flow rate, low flow resistance, etc. question.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of complex structure, troublesome installation and maintenance, high cost and poor reliability in the prior art in which the connection between the oil suction port of the gear pump and the steel pipe is replaced by welding, and provides a Flanged joint fitting assembly.

The utility model solves the problems of the technologies described above through the following technical solutions:

A flanged joint assembly is characterized in that it includes a flanged joint, a ferrule and a ferrule nut, wherein:

The flanged joint has a base with a flanged flange, one end of the base is provided with an external thread section, and the external threaded section is used for threading the ferrule nut, and the flanged joint is internally provided with a aisle;

The ferrule is a hollow ring-shaped body for clamping a pipe therein, and one end of the ferrule abuts against the end of the external thread segment;

The ferrule nut is provided with an internal thread section, and the internal thread section is threadedly connected to the flange connection joint, so that the ferrule is locked in the ferrule nut, and the end face of the ferrule nut is provided with a through hole for The pipe goes through.

In this technical solution, the base with the flange flange can be tightly connected with the oil port of the gear pump, and the pipe can be rigidly connected with the ferrule, for example, the pipe is directly stuck in the ferrule, and the ferrule nut is connected with the ferrule. The flange-type connection joint is thread-locked, and the ferrule can be fastened inside the ferrule nut, and is firmly locked at the end of the external thread section of the flange-type connection joint. Through the flanged joint assembly, only three parts are used, namely the flanged joint, ferrule and ferrule nut, to realize the connection between the oil port of the gear pump and the pipeline, which is comparable to other existing joints. The number of parts is greatly reduced, and many additional parts are saved. Moreover, it is very convenient to replace both during installation and maintenance, the structure of each component is also very simple, the processing is convenient, and the manufacturing cost is very low.

Preferably, the channel is divided into a section with a small inner diameter and a section with a large inner diameter. By forming channels with different diameters in the channel of the flanged joint, the oil port of the gear pump can be connected with pipelines of different diameters, thereby changing the flow rate to meet different needs of customers. For example, the small oil port of the gear pump can be connected to a large diameter pipe to reduce the flow rate.

Preferably, one end of the ferrule is an embedding part, and the embedding part is embedded in the channel. A part of one end of the ferrule is embedded in the passage, which can realize a linear seal between the ferrule and the flange connection joint.

Preferably, the outer wall of the ferrule is provided with a stepped surface, and a rectangular sealing ring is arranged between the stepped surface and the end surface of the end of the external thread section. Adding a rectangular sealing ring between the ferrule and the flange connection joint can make the entire pipeline connection more reliable and the pressure resistance level higher.

Preferably, the inner wall of the ferrule is provided with a collar groove, and an O-shaped sealing ring is embedded in the collar groove. The O-ring makes the tightness of the ferrule-type connection between the pipeline and the inner wall of the ferrule better, and makes the entire pipeline connection more reliable and has a higher pressure resistance level.

Preferably, a straight pipe section is provided between one end of the base and the external thread section. The straight pipe section can adjust the height of the entire flanged joint to suit different applications.

Preferably, the bottom surface of the base is provided with an annular groove, and an O-ring is embedded in the annular groove. The O-shaped sealing ring makes the connection between the base and the oil port of the gear pump better sealed, making the entire pipeline connection more reliable and the pressure resistance level higher.

Preferably, four connecting holes are uniformly arranged around the center of the flange flange. The fast connection between the base and the oil port of the gear pump can be realized by using screws in the connecting hole.

The utility model also provides a flanged joint assembly, which is characterized in that it includes a flanged joint, a ferrule and a ferrule nut, wherein:

The flange connection joint has a base with a flange flange, one end of the base is provided with a straight pipe section, and the end of the straight pipe section is provided with an external thread section, and the external thread section is used for threading the ferrule nut , the inside of the flanged joint is provided with a channel, which is divided into a small inner diameter section and a large inner diameter section;

The ferrule is a hollow annular body, used to clamp a pipe in it, one end of the ferrule abuts against the end of the external thread section, one end of the ferrule is an embedded part, and the embedded partially embedded in the channel;

The ferrule nut is provided with an internal thread section, and the internal thread section is threadedly connected to the flange connection joint, so that the ferrule is locked in the ferrule nut, and the end face of the ferrule nut is provided with a through hole for the pipe passes through;

The outer wall of the ferrule is provided with a stepped surface, and a rectangular sealing ring is arranged between the stepped surface and the end face of the end of the external thread section; the inner wall of the ferrule is provided with a ring groove, and an O-shaped sealing ring is embedded in the collar groove; the bottom surface of the base is provided with an annular groove, and an O-ring is embedded in the annular groove;

Four connecting holes are evenly arranged around the center of the flange flange.

The positive progress effect of the utility model lies in: the connection between the gear pump oil port and the pipeline provided by the flange connection joint assembly does not require welding, has a simple structure, does not require accessories, is convenient for installation and maintenance, low in manufacturing cost, reliable in operation, and resistant to pressure. High grade.

Description of drawings

Fig. 1 is an exploded schematic diagram of a flanged joint assembly of a preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of assembled flanged joint assemblies of a preferred embodiment of the present invention.

FIG. 3 is a cross-sectional view of the assembled flange joint assembly of FIG. 2 .

Fig. 4 is a bottom view of the assembled flange joint assembly of Fig. 2 .

Explanation of reference signs:

Flange connection fitting 1

base 11

Flange flange 111

Bottom 112

Annular groove 113

Connection hole 114

Straight pipe section 12

External thread section 13

Channel 14

Small inner diameter section 141

Large inner diameter section 142

card set 2

Embedded Department 21

Step surface 22

Collar groove 23

Ferrule nut 3

Internal thread section 31

Through hole 32

pipeline 4

Rectangular seal 5

O-ring seal 6

Detailed ways

A preferred embodiment is given below, and the utility model is described more clearly and completely in conjunction with the accompanying drawings.

Example

As shown in FIGS. 1-4 , the flanged joint assembly of the present invention includes a flanged joint 1 , a ferrule 2 and a ferrule nut 3 .

The flanged connection has a base 11 with a flanged flange 111 . One end of the base is provided with a straight pipe section 12 . The end of the straight pipe section is provided with an external thread section 13 . The external thread segment is used for threading the ferrule nut. A channel 14 is provided inside the flanged joint. The channel is divided into a small inner diameter section 141 and a larger inner diameter section 142 .

By forming channels with different diameters in the channel of the flanged joint, the oil port of the gear pump can be connected with pipelines of different diameters, thereby changing the flow rate to meet different needs of customers. For example, the small oil port of the gear pump can be connected to a large diameter pipe to reduce the flow rate. Of course, those skilled in the art can understand that it is not necessary to set the channel of the flange connection joint as a channel of different diameters, because in some cases it is only necessary to realize the connection between the oil port of the gear pump and the pipeline. No need to change the pipe diameter.

In addition, the straight pipe section provided between the base and the external thread section can adjust the height of the entire flanged joint to be suitable for different applications, but this is only a better optional solution and is not necessary.

The ferrule 2 is a hollow annular body for clamping a pipe 4 therein. One end of the ferrule abuts against the end of the external thread segment. One end of the ferrule is an embedding portion 21 , and the embedding portion is embedded in the channel 14 .

A part of one end of the ferrule is embedded in the passage, which can realize a linear seal between the ferrule and the flange connection joint. Of course, those skilled in the art can understand that even if one end of the ferrule is not inserted into the channel, the ferrule can still abut against the end of the external thread section and be screwed and locked by the ferrule nut.

The ferrule nut 3 is provided with an internal thread section 31 . The internal thread section is threadedly connected to the flange connection joint, so that the ferrule is locked in the ferrule nut. The end surface of the ferrule nut is provided with a through hole 32 for the pipe to pass through.

The outer wall of the ferrule is provided with a stepped surface 22 . A rectangular sealing ring 5 is arranged between the stepped surface and the end surface of the end of the external thread section. The inner wall of the ferrule is provided with a collar groove 23 . An O-ring 6 is embedded in the collar groove. A bottom surface 112 of the base 11 defines an annular groove 113 . An O-ring (not shown) is embedded in the annular groove.

Adding a rectangular sealing ring between the ferrule and the flange connection joint can make the entire pipeline connection more reliable and the pressure resistance level higher. Similarly, the O-ring seal set in the collar groove on the inner wall of the ferrule makes the ferrule-type connection between the pipeline and the inner wall of the ferrule better sealed, making the entire pipeline connection more reliable and the pressure resistance level higher . The O-shaped sealing ring on the bottom surface of the base makes the connection between the base and the oil port of the gear pump better sealed, making the entire pipeline connection more reliable and the pressure resistance level higher. Of course, those skilled in the art can understand that the shape of these sealing rings is rectangular or O-shaped, which is just an example, and sealing rings of other shapes can also be selected.

Four connecting holes 114 are uniformly arranged around the center of the flange flange. The fast connection between the base and the oil port of the gear pump can be realized by using screws in the connecting hole.

For the flanged joint assembly of this embodiment, the base with the flange flange can be tightly connected to the oil port of the gear pump, and the pipe can be rigidly connected to the ferrule, for example, the pipe is directly stuck in the ferrule, The ferrule can be fastened inside the ferrule nut and firmly locked to the end of the external thread section of the flanged joint through the thread locking of the ferrule nut and the flanged joint. Through the flanged joint assembly, only three parts are used, namely the flanged joint, ferrule and ferrule nut, to realize the connection between the oil port of the gear pump and the pipeline, which is comparable to other existing joints. The number of parts is greatly reduced, and many additional parts are saved. Moreover, it is very convenient to replace both during installation and maintenance, the structure of each component is also very simple, the processing is convenient, and the manufacturing cost is very low.

The flange connection joint assembly of the utility model can not only be used for the connection between the oil port of the gear pump and the pipeline, but also can be used for the connection between the opening of other mechanical devices and the pipeline.

Although the specific implementation of the utility model has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims (9)

1. A flanged joint assembly, characterized in that it comprises a flanged joint, a ferrule and a ferrule nut, wherein: The flanged joint has a base with a flanged flange, one end of the base is provided with an external thread section, and the external threaded section is used for threading the ferrule nut, and the flanged joint is internally provided with a aisle; The ferrule is a hollow ring-shaped body for clamping a pipe therein, and one end of the ferrule abuts against the end of the external thread segment; The ferrule nut is provided with an internal thread section, and the internal thread section is threadedly connected to the flange connection joint, so that the ferrule is locked in the ferrule nut, and the end face of the ferrule nut is provided with a through hole for The pipe goes through. 2. The flanged joint assembly according to claim 1, wherein the channel is divided into a section with a small inner diameter and a section with a large inner diameter. 3 . The flanged joint assembly according to claim 1 , wherein one end of the ferrule is an embedding portion, and the embedding portion is embedded into the channel. 4 . 4. The flanged joint assembly according to claim 1, wherein the outer wall of the ferrule is provided with a stepped surface, and a rectangular sealing ring is arranged between the stepped surface and the end surface of the end of the external thread section between. 5 . The flanged joint assembly as claimed in claim 1 , wherein an inner wall of the ferrule is provided with a collar groove, and an O-ring is embedded in the collar groove. 5 . 6. The flanged joint assembly according to claim 1, wherein a straight pipe section is provided between one end of the base and the external thread section. 7. The flanged joint assembly as claimed in claim 1, wherein an annular groove is formed on the bottom surface of the base, and an O-ring is embedded in the annular groove. 8 . The flanged joint assembly according to claim 1 , wherein four connecting holes are uniformly arranged around the center of the flange flange. 9 . 9. A flanged joint assembly, characterized in that it comprises a flanged joint, a ferrule and a ferrule nut, wherein: The flange connection joint has a base with a flange flange, one end of the base is provided with a straight pipe section, and the end of the straight pipe section is provided with an external thread section, and the external thread section is used for threading the ferrule nut , the inside of the flanged joint is provided with a channel, which is divided into a small inner diameter section and a large inner diameter section; The ferrule is a hollow annular body, used to clamp a pipe in it, one end of the ferrule abuts against the end of the external thread section, one end of the ferrule is an embedded part, and the embedded partially embedded in the channel; The ferrule nut is provided with an internal thread section, and the internal thread section is threadedly connected to the flange connection joint, so that the ferrule is locked in the ferrule nut, and the end face of the ferrule nut is provided with a through hole for the pipe passes through; The outer wall of the ferrule is provided with a stepped surface, and a rectangular sealing ring is arranged between the stepped surface and the end face of the end of the external thread section; the inner wall of the ferrule is provided with a ring groove, and an O-shaped sealing ring is embedded In the collar groove; the bottom surface of the base is provided with an annular groove, and an O-ring is embedded in the annular groove; Four connecting holes are uniformly arranged around the center of the flange flange.