CN217713989U

CN217713989U - Cutting ferrule formula coupling assembling

Info

Publication number: CN217713989U
Application number: CN202221535263.9U
Authority: CN
Inventors: 罗纲
Original assignee: Eger Fluid Technology Zhejiang Co ltd
Current assignee: Eger Fluid Technology Zhejiang Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-11-01
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a cutting ferrule formula coupling assembling for connect the body, cutting ferrule formula coupling assembling includes the connector body, snap ring one, snap ring two and nut, snap ring one is pressed close to connector body one end along axial protrusion and is formed first grafting sword, snap ring one deviates from connector body one end along radial protrusion and forms first locking portion, first locking portion contacts with the nut, and the hole position of first locking portion forms an interior taper joint face; snap ring one end is pressed close to snap ring two and is followed axial protrusion and form the second sword of pegging graft, snap ring two deviates from snap ring one end and radially protrudes and form second locking portion, the convex third sword of pegging graft that is provided with of hole department of snap ring two, first grafting sword inserts interior taper joint face and contacts with the body, second grafting sword contacts with the body, second locking portion contacts with the nut. The utility model discloses strengthen connecting and sealed effect, be applicable to the high pressure field and the occasion that the reliability requirement is high.

Description

Cutting ferrule formula coupling assembling

Technical Field

The utility model belongs to the technical field of the attach fitting and specifically relates to a cutting ferrule formula coupling assembling is related to.

Background

The ferrule type pipe joint is widely applied to connection and sealing of steel pipes, and for example, a double ferrule type pipe joint disclosed in patent document 1 includes a ferrule, a joint body, a front ferrule, a rear ferrule and a nut, wherein the lower end of the nut is in threaded connection with the joint body, the upper end of the nut is adapted to the pipe diameter of the ferrule, the upper end surface of the rear ferrule is fitted with a first downward pressing conical surface on the nut, a gripping hole is arranged below a second annular groove, the gripping hole is in interference fit with the outer wall of the ferrule, and the diameter of the gripping hole is smaller than the diameter of the upper end of an inner hole of the rear ferrule; and a second pressing conical surface is arranged between the first pressing conical surface and the internal threaded hole of the nut and is in contact with the upper part of the outer wall of the front clamping sleeve. The rear clamping sleeve firmly grabs the clamping sleeve under the extrusion of the front clamping sleeve and the nut, the front clamping sleeve is extruded by the second pressing conical surface of the nut, the rear clamping sleeve and the joint body, the inner hole surface tightly presses the outer wall of the clamping sleeve, and the rear clamping sleeve and the front clamping sleeve form an effective double-sealing structure between the joint body and the clamping sleeve.

However, the structure has too many parts, is complex to assemble, has insufficient holding force on the snap ring, and is difficult to meet the requirements and has disadvantages for occasions with high requirements on high-voltage field and reliability.

Patent document 1 cn1138645454545a.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an avoid the weak point that prior art exists, provide a cutting ferrule formula coupling assembling of effect is embraced tightly to height from this.

The utility model provides a technical problem adopt following technical scheme: a clamping sleeve type connecting assembly is used for connecting a pipe body and comprises a joint body, a first clamping ring, a second clamping ring and a nut, wherein the nut locks the first clamping ring and the second clamping ring between the joint body and the pipe body;

snap ring one end is pressed close to snap ring two and is followed axial protrusion and form the second sword of pegging graft, snap ring two deviates from snap ring one end and radially protrudes and form second locking portion, the convex third sword of pegging graft that is provided with of hole department of snap ring two, first grafting sword inserts interior taper joint face and contacts with the body, second grafting sword contacts with the body, second locking portion contacts with the nut.

The first inserting blade, the second inserting blade and the third inserting blade are inserted into the pipe body to be connected, so that the connecting and sealing effects are achieved.

The nut is attached to the first locking portion and the second locking portion, the pressing effect is achieved, and the hooping effect is enhanced.

The first inserting blade is connected into the joint body to play a role in sealing.

The inner conical surface is matched with the second inserting blade to play a sealing role.

In several embodiments, the connector body is provided with an inner tapered surface on one side, and the first inserting blade penetrates into the inner tapered surface.

In several embodiments, the first inserting edge is obliquely arranged and contacts with the outer wall of the tube body.

In several embodiments, the third plugging edge is located between the first plugging edge and the second locking portion.

In several embodiments, the outer wall of the second snap ring is recessed inward to form a groove portion, and the groove portion is located between the first inserting edge and the second locking portion to reduce contact stress.

In several embodiments, the first snap ring has a horizontal connecting surface at the inner bore, the connecting surface is located between the first inserting edge and the inner tapered surface, and the connecting surface is in contact with the pipe body.

The utility model discloses following beneficial effect has:

the utility model discloses play and connect and sealed effect, reduce contact stress, strengthen connection and sealed effect, improve compressive strength, be applicable to the high pressure field and the high occasion of reliability requirement.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not to be considered limiting of the scope of the present disclosure.

Fig. 1 schematically illustrates an assembly structure of a ferrule type connection assembly in the present embodiment;

FIG. 2 schematically illustrates a half-section of the snap ring one of FIG. 1;

fig. 3 schematically shows a half-section structure of the snap ring two in fig. 1.

Detailed Description

In the following, the embodiments of the present invention are described in detail, so as to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, and in the following, the embodiments of the present invention will be combined to make clear and complete descriptions of the technical solutions in the embodiments of the present invention.

The terminology used herein is for the purpose of explaining the embodiments and is not intended to limit and/or define the invention.

For example, expressions such as "in a certain direction", "along a certain direction", "axial direction", "orthogonal", "axial line", "relative", "front-back-left-right" and the like indicate relative or absolute arrangements, and indicate not only such arrangements in a strict sense but also a state of being relatively displaced with a tolerance or an angle or a distance to the extent that the same function can be obtained.

As shown in fig. 1 to fig. 3, the ferrule type connection assembly in this embodiment is used for connecting and sealing a pipe body 100, especially a steel pipe, and mainly comprises a joint body 10, a first snap ring 20, a second snap ring 30 and a nut 40, wherein both the first snap ring 20 and the second snap ring 30 are sleeved on the pipe body 100, and the nut 40 locks the first snap ring 20 and the second snap ring 30 between the joint body 10 and the pipe body 100 to achieve connection and sealing.

The nut is provided with a first stress surface 41 and a second stress surface 42 which are distributed in a step shape, the first stress surface is in contact fit with the second snap ring 30, and the second stress surface 42 is in contact fit with the first snap ring 20.

As shown in fig. 2, a first snap ring 20 protrudes axially and forms a first inserting blade 21 close to one end of the connector body 10, a first locking portion 22 protrudes radially and forms one end of the first snap ring 20 away from the connector body 10, the first locking portion 22 contacts with a second stressed surface 42 in the nut 40 to realize locking, a conical inner tapered surface 23 is formed at an inner hole position of the first locking portion 22, an inner tapered surface 11 is arranged on one side of the connector body 10, and the first inserting blade 21 penetrates the inner tapered surface 11 to be attached and connected.

The first inserting edge 21 is obliquely arranged on the cross section, specifically, the first inserting edge 21 is composed of a first inclined surface 211, a blade surface 212, a second inclined surface 212 and a third inclined surface 214 which are connected in sequence, the first inclined surface 211 is used as a partial outer wall and is connected with the first locking portion 22, a blade-shaped structure is formed at the blade surface 212, the second inclined surface 213 and the third inclined surface 214 are used as an inner wall of a partial inner hole, the second inclined surface 213 and the first inclined surface 211 are obliquely and upwardly distributed from left to right, the third inclined surface 214 is obliquely and downwardly distributed, the first inclined surface 211 is attached to the inner conical surface 11, and the position of the blade surface 212 is partially inserted into the outer wall of the tube body 100 to be contacted, so that tight connection is realized.

Meanwhile, a horizontal connecting surface 24 is arranged at the inner hole of the first snap ring 20, and the connecting surface 24 is located between the first inserting blade 21 and the inner tapered surface 23, specifically between the third inclined surface 214 and the inner tapered surface 23, and is in fit contact fit with the outer wall of the tube body 100 through the connecting surface 24.

As shown in fig. 3, one end of the second snap ring 30, which is close to the first snap ring 20, protrudes in the axial direction to form a second inserting blade 31, the inner hole of the second snap ring 30 is provided with a third inserting blade 33, the second inserting blade 31 and the third inserting blade 33 are both in blade-shaped structures, which is similar to the first inserting blade in structure, and the blade position is also inserted into the tube 100 to achieve tight connection, and the first inserting blade 21 is further used for being connected to the inner tapered surface 23 and contacting with the inner tapered surface.

And a second locking part 32 is formed at one end of the second snap ring 30, which is far away from the first snap ring 20, and the second locking part 32 is contacted with the first stress surface 41 in the nut 40 to strengthen the clamping.

Meanwhile, an annular groove portion 34 is formed on the outer wall of the second snap ring 30 in an inward recessed manner, and the groove portion 34 is located between the first inserting edge 21 and the second locking portion 32, so that the weight is reduced and the contact stress is reduced.

The present invention describes preferred embodiments, including the best mode of carrying out the present invention as known to those skilled in the art. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The person envisions that the skilled person may use this variation as appropriate, the person pointing out that the invention can be implemented according to other ways than those specifically described herein. Accordingly, this invention includes all modifications encompassed within the spirit and scope of the invention as defined by the claims. Moreover, unless stated otherwise or clearly contradicted by context, the present disclosure includes any and all possible variations of the above-described elements.

Claims

1. A clamping sleeve type connecting assembly is used for connecting a pipe body and comprises a joint body, a first clamping ring, a second clamping ring and a nut, wherein the nut locks the first clamping ring and the second clamping ring between the joint body and the pipe body;

snap ring one end is pressed close to snap ring two and is followed the axial protrusion and form second grafting sword, snap ring two deviates from snap ring one end and radially protrudes and form second locking portion, the convex third grafting sword that is provided with of hole department of snap ring two, first grafting sword inserts interior taper joint face and contacts with the body, second grafting sword contacts with the body, second locking portion contacts with the nut.

2. The ferrule type connection assembly according to claim 1, wherein an inner tapered surface is provided on one side of the connector body, and the first inserting blade penetrates into the inner tapered surface.

3. The ferrule-type connection assembly according to claim 2, wherein the first inserting edge is disposed obliquely and contacts with an outer wall of the tube body.

4. The ferrule-type connection assembly of claim 3, wherein the third plugging edge is located between the first plugging edge and the second locking portion.

5. The ferrule-type connection assembly according to claim 4, wherein a groove portion is formed on an outer wall of the second ferrule by being recessed inward, and the groove portion is located between the first inserting edge and the second locking portion.

6. The ferrule-type connection assembly according to claim 5, wherein the first snap ring has a horizontal connecting surface at the inner bore, the connecting surface being located between the first insert blade and the inner tapered surface, the connecting surface contacting the tubular body.