CN211398956U

CN211398956U - High leakproofness reliability fluoroplastic joint design

Info

Publication number: CN211398956U
Application number: CN201922055564.6U
Authority: CN
Inventors: 潘宸; 倪向阳; 汪朝伟
Original assignee: Jiangsu Youerfu Electromechanical Technology Co ltd
Current assignee: Jiangsu Youerfu Electromechanical Technology Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-09-01
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a high leakproofness reliability fluoroplastic joint structure, including connecting the body, the one end that connects the body and be used for connecting the water pipe is provided with interior intubate, and interior intubate is used for pegging graft the inside of water pipe, and laminates with the water pipe inner wall, and interior intubate is one-step shape all around and passes through the linkage segment, forms the radial face of keeping out of round between linkage segment and the interior intubate, and the face of keeping out is close to interior intubate one end and sets up flutedly, is provided with the sealing washer in the recess, and the sealing washer part exposes the recess, and the tip of water pipe is provided with the flange that extends all around towards, and the flange is perpendicular with the water pipe, connect body and water pipe and pass through lock nut and connect, lock. The utility model discloses keep apart with the water pipe outside interior intubate with the sealing washer, it is sealed effectual, sealing performance is stable. The flange of the water pipe is matched with the clamping ring of the locking nut, so that the flange can be stably pressed and compacted on the sealing ring.

Description

High leakproofness reliability fluoroplastic joint design

Technical Field

The utility model relates to a joint design of high sealing reliability fluorine plastic pipeline system belongs to fluorine plastic pipeline system's technical field.

Background

The fluoroplastic pipeline system is a pipeline system mainly composed of fluoroplastic pipelines, joints and the like.

Fluoroplastics are a general term for paraffin polymers in which some or all of the hydrogens are replaced by fluorine, and have unique properties not possessed by many other classes of materials. For some special environment and high-requirement application requirements, the material has an irreplaceable position as a pipeline system material:

1. the high-temperature-resistant material has good temperature resistance, still has good toughness at low temperature, and has generally higher high temperature resistance, so that the material can work in a wide temperature range;

2. the surface energy is low, the critical surface tension is small, and therefore, the pollution is not easy to occur;

3. excellent electrical insulation, maximum volume resistivity, minimum dielectric constant, breakdown resistance and the like;

4. the chemical resistance is the most excellent in all plastics, and no component is separated out in different media;

5. the weather resistance is excellent, and the appearance and the mechanical property are not obviously changed after the paint is used in an outdoor environment for a long time;

6. has self-extinguishing property and excellent flame retardance.

The fluoroplastic has the characteristics, so that the pipeline system made of the fluoroplastic materials can be widely applied to chemical engineering, electric power, semiconductors and the like.

In a fluoroplastic pipeline system, a joint connecting part is an important link, and the reliability of the joint connecting part generally determines the reliability of the whole fluoroplastic pipeline. The conventional joint connection mode of the fluoroplastic pipeline generally comprises the following steps: during the tip of fluoroplastic water pipe inserted joint body axial inserting groove to establish the clamp at fluoroplastic water pipe's outside cover, connect joint body and fluoroplastic water pipe through lock nut, body and nut can be carved into to the clamp when lock nut is locked, and bend downwards in the middle of the clamp under certain pressure and form another compaction structure. The water pipe is further pressed through the three positions, and the water sealing effect is achieved. However, the conventional fluoroplastic pipeline connecting structure comprises a joint material and a water pipe which are both made of fluoroplastic. The fluoroplastic has limited rigidity, so that the whole connecting structure is composed of components with poor rigidity, and therefore, real reliable sealing cannot be realized.

Disclosure of Invention

In order to solve the technical problem, the utility model discloses a joint design of high sealing reliability's fluoroplastic pipeline, its concrete technical scheme is as follows:

the joint structure of the high-sealing reliability fluoroplastic pipeline comprises a joint body, wherein one end of the joint body, which is used for being connected with a water pipe, is provided with an inner inserting pipe, the inner inserting pipe is inserted into the water pipe and is attached to the inner wall of the water pipe, the periphery of the inner inserting pipe is in a step shape and is transited to a connecting section, a circle of radial resisting surface is formed between the connecting section and the inner inserting pipe, one end, which is close to the inner inserting pipe, of the resisting surface is provided with a groove, a sealing ring is arranged in the groove, and part,

the end part of the water pipe is provided with a flange extending towards the periphery, the flange is vertical to the water pipe, the joint body is connected with the water pipe through a locking nut,

the locking nut is provided with a clamping ring which extrudes the flange towards the sealing ring.

Further, the clamping ring is a ring-shaped structure vertically extending from the inner wall of the lock nut towards the center, and the extending length of the ring-shaped structure is greater than that of the flange.

Furthermore, the connecting section is provided with an external thread, and the internal thread of the locking nut is meshed with the external thread of the connecting section.

Further, the aperture of the joint body is consistent with that of the water pipe, and the inner wall of the joint body is obliquely transited to the inner wall of the inner inserting pipe.

Further, the joint body and the inner insertion pipe are integrally formed, the water pipe and the flange are integrally formed, and the locking nut and the clamping ring are integrally formed.

Furthermore, a gasket is laid on the binding surface of the flange and the clamping ring.

The utility model discloses a theory of operation is:

the utility model discloses, at first handle the flange of a body structure with the tip of water pipe, common processing method does, carries out the post forming in inserting hot melt mould with the end of water pipe.

And a sealing ring is plugged into the groove of the joint body, the diameter of the cross section of the sealing ring is greater than the depth of the groove, and part of the sealing ring is exposed out of the groove. The locking nut is sleeved on the water pipe, the clamping ring of the locking nut is in contact with the flange of the water pipe, then the locking nut is screwed on the connector body, the inner inserting pipe is inserted into the water pipe, the outer wall of the inner inserting pipe is attached to the inner wall of the water pipe until the flange is tightly pressed with the sealing ring, and sealing is achieved.

The utility model has the advantages that:

the utility model discloses interior intubate and the laminating of water pipe inner wall are kept apart with the sealing washer with interior intubate and water pipe outside, and are sealed effectual, and sealing performance is stable.

The utility model discloses a flange of water pipe and lock nut's chucking circle cooperation ensure that the flange can stably compress tightly the compaction on the sealing washer, and lock nut and joint body threaded connection, the depth of connection is adjustable, and connects stably, is difficult to the pine and takes off.

The utility model discloses intubate and water pipe outside have formed circuitous mechanical seal structure.

The utility model discloses when the structure is fluoroplastics to water pipe, joint body and lock nut, sealing performance is still very stable, does not need the structure to give the elasticity space of letting out, and pure rigid structure alright realize sealing by force.

Drawings

Figure 1 is an axial cross-sectional view of the present invention,

figure 2 is a cross-sectional view of the fitting body,

reference numerals: the pipe joint comprises a joint body 1, a joint section 1-1, a resisting surface 1-2, a locking nut 2, a flange 3, a clamping ring 4, a water pipe 5, a groove 6, a sealing ring 7 and an inner inserting pipe 8.

Detailed Description

The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.

As shown in figure 1, according to the high-sealing-performance reliable fluoroplastic joint structure, a joint body 1 is connected with a water pipe 5 through a locking nut 2, an inner inserting pipe 8 inserted into the water pipe 5 is arranged at one end of the joint body 1 connected with the water pipe 5, the aperture of the inner inserting pipe 8 is controlled to enable the outer wall of the inner inserting pipe to be attached to the inner wall of the water pipe 5, the water pipe 5 and the inner inserting pipe 8 are provided with one end overlapped sections, and water in the water pipe 5 is transferred into the joint body 1 through the inner inserting pipe 8.

In order to realize high sealing between the inner inserting pipe 8 and the water pipe 5, as shown in fig. 2, the periphery of the inner inserting pipe 8 is in a step shape and is transited to a connecting section 1-1, a circle of radial resisting surface 1-2 is formed between the connecting section 1-1 and the inner inserting pipe 8, a groove 6 is formed at one end, close to the inner inserting pipe 8, of the resisting surface 1-2, a sealing ring 7 is arranged in the groove 6, part of the sealing ring 7 is exposed out of the groove 6, the groove 6 is used for providing a positioning space for the sealing ring 7 to prevent the sealing ring 7 from running out of position in the using process, and the sealing ring 7 is usually a plastic sealing ring 7 with.

The end of the water pipe 5 is provided with a flange 3 extending around, and the flange 3 is perpendicular to the water pipe 5. The locking nut 2 is firstly sleeved on the water pipe 5, the clamping ring 4 of the locking nut 2 hooks the flange 3, and then the locking nut 2 is screwed on the joint body 1. In the tightening process of the locking nut 2, the flange 3 extrudes the sealing ring 7, and the sealing inside and outside the water pipe 5 is realized.

The structure of one embodiment of the grommet 4 is given below: clamping ring 4 is from 2 inner walls of lock nut towards the perpendicular round annular structure that extends formation in center, and its length that extends is greater than the length that flange 3 extends, can reserve certain interval between the outer peripheral edge of flange 3 and lock nut 2's the inner wall, and the processing of being convenient for prevents that the aperture difference is little, connects the condition of difficulty.

An embodiment of a connection mode of the lock nut 2 and the joint body 1 is given below, the connection section 1-1 is provided with an external thread, and the internal thread of the lock nut 2 is engaged with the external thread of the connection section 1-1. The threaded connection is a common connection mode, the thread processing technology is mature, and the front and back yielding distance is flexible during connection.

The utility model discloses well joint body 1's aperture is unanimous with the aperture of water pipe 5, and the inner wall slope of joint body 1 passes through the inner wall of intubate 8 in.

The utility model has the advantages that the middle joint body 1 and the inner inserting pipe 8 are integrally formed, the water pipe 5 and the flange 3 are integrally formed, the flange 3 is formed by hot melting and reshaping the water pipe 5, the relation between the flange 3 and the water pipe 5 is stable, and the flange can not be separated from or crack; the locking nut 2 and the clamping ring 4 are integrally formed, and the clamping ring 4 of the locking nut 2 is firmly connected.

In order to improve the connection stability of the locking nut 2 and supplement water exposure, a gasket is laid on the binding surface of the flange 3 and the clamping ring 4. The shim can grow into the bite between the threads.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. High leakproofness reliability fluoroplastic joint design, its characterized in that: comprises a joint body, wherein one end of the joint body, which is used for being connected with a water pipe, is provided with an inner inserting pipe, the inner inserting pipe is used for being inserted into the water pipe and is attached to the inner wall of the water pipe, the periphery of the inner inserting pipe is in a step shape and is transited to a connecting section, a circle of radial resisting surface is formed between the connecting section and the inner inserting pipe, one end of the resisting surface, which is close to the inner inserting pipe, is provided with a groove, a sealing ring is arranged in the groove, and the,

2. The fluoroplastic joint structure of claim 1, wherein: the clamping ring is a ring-shaped structure formed by vertically extending from the inner wall of the locking nut towards the center, and the extending length of the clamping ring is greater than that of the flange.

3. The fluoroplastic joint structure of claim 1, wherein: the connecting section is provided with external threads, and the internal threads of the locking nut are meshed with the external threads of the connecting section.

4. The fluoroplastic joint structure of claim 1, wherein: the aperture of the connector body is consistent with that of the water pipe, and the inner wall of the connector body is obliquely transited to the inner wall of the inner inserting pipe.

5. The fluoroplastic joint structure of claim 1, wherein: the joint body and the inner inserting pipe are integrally formed, the water pipe and the flange are integrally formed, and the locking nut and the clamping ring are integrally formed.

6. The fluoroplastic joint structure of claim 1, wherein: and a gasket is laid on the binding surface of the flange and the clamping ring.