CN211010302U - Self-anchoring connection structure of ball-milling cast iron pipe - Google Patents

Abstract

The utility model provides a ball milling cast iron pipe is from anchor connection structure belongs to cast union coupling technical field, including setting up first annular groove on the socket of cast pipe, setting up at the inboard snap ring of cast pipe bellmouth and setting up at the inboard sealing member of cast pipe bellmouth, snap ring's inboard is used for connecting first annular groove, and the outside is used for joint bellmouth boss, and the socket of cast pipe is pegged graft in the bellmouth and is realized from the anchor with the help of snap ring and connect. The utility model provides a ball-milling cast iron pipe is from anchor connection structure, the socket of two adjacent cast pipes inserts to the bellmouth in, makes to be connected closely between socket and the bellmouth through snap ring, has realized the self-anchoring connection of cast pipe socket and bellmouth, and this kind of connected mode is stable, sealing member and socket contact sealing connection, and when water pressure was big, the kneck was difficult for breaking away from.

Description

Self-anchoring connection structure of ball-milling cast iron pipe

Technical Field

The utility model belongs to the technical field of cast tube connects, more specifically says, relates to a ball milling cast iron pipe is from anchor connection structure.

Background

In the prior art, each casting pipe is respectively provided with a socket and a spigot, when the ball milling casting pipes are connected with each other to form a pipeline, the spigots of two adjacent casting pipes are inserted into the sockets to realize connection, and the casting pipes are connected end to form the pipeline.

The common T-shaped socket nodular cast iron pipe can not realize self-anchoring connection at the joint, but adopts a common connection mode, and after the connection of the cast pipes, at the turning position of the pipeline or when the gradient is larger, because the water pressure is larger and certain deflection exists, the phenomena of separation, fracture and the like easily occur at the joint of the T-shaped socket nodular cast iron pipe, so that the connection between the adjacent cast pipes is unstable, and the use of the pipeline is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball-milling cast iron pipe is from anchor connection structure aims at solving the unable self-anchoring connection that realizes at the kneck of ball-milling cast iron pipe, easily produces the technical problem who breaks away from.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a self-anchoring joint structure for a nodular cast iron pipe, comprising:

the first annular groove is circumferentially arranged on the outer wall of the socket;

the inner side of the elastic clamping ring is used for connecting the first annular groove, and the outer side of the elastic clamping ring is used for clamping the bellmouth boss; and

the sealing element is arranged on the inner side of the socket and is used for sealing a gap between the socket and the socket; the socket is inserted in the socket and realizes self-anchoring connection by means of the elastic snap ring.

As another embodiment of the application, a row of first ratchets used for being clamped with the elastic clamping ring are arranged in the first annular groove.

As another embodiment of the application, the inner side of the elastic clamping ring is provided with a row of second ratchets which are used for being clamped with the first annular groove, and the second ratchets are meshed with the first ratchets and are used for limiting the elastic clamping ring.

As another embodiment of the application, a second annular groove clamped with the socket boss is arranged on the peripheral wall of the outer side of the elastic clamping ring.

As another embodiment of the present application, a notch is formed on the elastic snap ring, and two groups of expansion holes are formed on two sides of the notch;

the diameter of the elastic snap ring is adjusted by means of expansion pliers inserted into the expansion holes.

As another embodiment of the present application, the expansion holes include a horizontal expansion hole and a vertical expansion hole, which are respectively disposed at both sides of the notch.

As another embodiment of the present application, the inner groove wall of the second annular groove and the outer wall of the socket boss abut against each other.

As another embodiment of the present application, a gap is provided between the groove bottom of the second annular groove and the socket boss.

As another embodiment of the present application, the elastic snap ring and the sealing member abut against each other.

As another embodiment of this application, bellmouth inside wall circumference be equipped with be used for with the arc boss of sealing member lock joint, the outside wall circumference of sealing member be equipped with the arc recess of arc boss looks adaptation.

The utility model provides a ball-milling cast iron pipe is from anchor connection structure's beneficial effect lies in: compared with the prior art, the self-anchoring connecting structure of the nodular cast iron pipe of the utility model has the advantages that the first annular groove is arranged on the peripheral wall of the socket, the outer side of the elastic snap ring is firstly clamped on the boss of the socket, a sealing element is arranged in the socket, the spigot is inserted into the socket, the elastic clamping ring is clamped in the first annular groove, the self-anchoring connection of the spigot and the socket of the cast pipe is realized, the connection mode is stable, the sealing element is in contact sealing connection with the spigot, when the water pressure is high, the connector is not easy to break away and fracture, the technical problems that the ductile cast iron pipe cannot realize self-anchoring connection at the connector and is easy to break away are solved, the connection between the socket and the spigot of the adjacent cast pipe is tight, the spigot is directly inserted into the socket to realize the self-anchoring connection of the T-shaped socket ductile cast iron pipe, the connection is stable, the connection mode is simple, and the connector of the cast pipe is not easy to break away.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a self-anchoring connection structure of a nodular cast iron pipe provided by an embodiment of the invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view of FIG. 1 at B;

fig. 4 is a schematic view of an elastic snap ring structure of a self-anchoring connection structure of a ductile iron pipe according to an embodiment of the present invention;

fig. 5 is a side view of an elastic snap ring of a self-anchoring connection structure for a nodular cast iron pipe according to an embodiment of the present invention;

fig. 6 is an enlarged view of fig. 5 at C.

In the figure: 1. a first annular groove; 11. a first ratchet; 2. an elastic snap ring; 21. a second ratchet; 22. a second annular groove; 3. a seal member; 4. a bellmouth boss; 5. expanding the hole; 51. horizontally expanding the hole; 52. vertically expanding the hole; 6. an arc-shaped boss.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 6 together, the self-anchoring connection structure of the ductile iron pipe of the present invention will now be described. The self-anchoring connection structure for the ductile iron pipe comprises a first annular groove 1 arranged on a socket of the ductile iron pipe, an elastic snap ring 2 arranged on the inner side of a socket of the ductile iron pipe and a sealing element 3 arranged on the inner side of the socket of the ductile iron pipe.

The first annular groove 1 is uniformly and circumferentially arranged on the outer wall of the socket.

The inner side of the elastic clamping ring 2 is used for connecting the first annular groove 1, and the outer side of the elastic clamping ring is used for clamping the bellmouth boss 4.

The sealing element 3 is arranged on the inner side of the socket and is used for sealing a gap between the socket and the spigot; the spigot of the casting tube is inserted into the socket and self-anchored by means of the snap ring 2.

Compared with the prior art, the self-anchoring connection structure of the nodular cast iron pipe provided by the utility model has the advantages that the first annular groove 1 is arranged on the peripheral wall of the socket, the outer side of the elastic snap ring 2 is firstly clamped on the socket boss 4, a sealing element 3 is arranged in the socket, and finally the spigot is inserted into the socket, the elastic clamping ring 2 is tightly clamped in the first annular groove 1, so that the self-anchoring connection of the spigot and the socket of the cast tube is realized, the connection mode is stable, the sealing element 3 is in contact sealing connection with the spigot, when the water pressure is high, the connector is not easy to break away and fracture, the technical problems that the ductile cast iron pipe cannot realize self-anchoring connection at the connector and is easy to break away are solved, the connection between the socket and the spigot of the adjacent cast pipe is tight, the spigot is directly inserted into the socket to realize the self-anchoring connection of the T-shaped socket ductile cast iron pipe, the connection is stable, the connection mode is simple, and the connector of the cast pipe is not easy to break away.

In one embodiment, each nodular cast iron pipe has a socket and a spigot, the first annular groove 1 is arranged on the outer wall of the spigot of one pipe, the elastic snap ring 2 and the sealing element 3 are arranged on the inner side wall of the socket of the other pipe, so that the two pipes are connected by inserting the spigot into the socket, and when the inner side of the elastic snap ring 2 is clamped with the first annular groove 1, the spigot and the socket realize self-anchoring connection. The spigot is inserted into the spigot, and then can not break away from the spigot, and the sealing element 3 plays a role in the contact sealing connection between the spigot and the spigot of the adjacent cast pipes, and after the adjacent cast pipes are connected with each other, a pipeline is formed, after water is introduced into the pipeline, the pipeline turns or when the gradient is large, the water pressure is large, and the influence on the joint of the cast pipes can not be generated, such as break away, fracture and the like, so that the self-anchoring connection of the T-shaped spigot nodular cast iron pipe at the joint is realized.

In a specific embodiment, the elastic snap ring 2 is annular, and the elastic snap ring 2 has certain elasticity, and the function of adjusting the diameter of the elastic snap ring can be realized by means of external force. The outer side of the elastic clamping ring 2 can be clamped on the bellmouth boss 4, and the inner side of the elastic clamping ring can be clamped with the first annular groove 1, so that the self-anchoring connection between the socket of the cast pipe and the bellmouth is realized. The sealing element 3 is a ring-shaped sealing rubber gasket, and the outer side of the sealing rubber gasket can be buckled with the inner wall of the socket into a whole. First annular groove 1 is for setting up the groove structure on the socket periphery wall, also is the fixed effect of joint is realized to convenience and first annular groove 1, also can play spacing effect simultaneously.

As a specific embodiment of the self-anchoring connection structure for the nodular cast iron pipe provided in the present invention, please refer to fig. 1 and 3, a row of first ratchets 11 for being connected with the elastic snap ring 2 in a clamping manner is disposed in the first annular groove 1. A row of first ratchet 11 includes a plurality of ratchets, and a plurality of ratchets equipartition are in first annular groove 1, and in socket insertion to bellmouth in-process, when the elastic clamping ring 2 contacted this ratchet, can be with elastic clamping ring 2 chucking on this ratchet, realized self-anchoring connection.

In one embodiment, the first ratchet teeth 11 may be understood as a pawl structure that allows only one-directional movement of the socket within the socket, i.e. allows the socket to be inserted gradually deeper into the socket during insertion into the socket, and the socket cannot be disengaged from the socket. Therefore, the connection mode is stable and compact, and the phenomena of separation, fracture and the like at the cast pipe joint can be avoided after the pipeline is filled with water.

As a specific embodiment of the self-anchoring connection structure for the nodular cast iron pipe provided by the present invention, please refer to fig. 1, fig. 2, fig. 5 and fig. 6, the inner side of the resilient snap ring 2 is provided with a row of second ratchets 21 for being connected with the first annular groove 1 in a clamping manner, and the second ratchets 21 are engaged with the first ratchets 11 and are used for limiting the resilient snap ring 2. The row of second ratchet teeth 21 comprises a plurality of ratchet teeth having a profile opposite to the profile of the first ratchet teeth 11 (the direction of inclination of the ratchet teeth is opposite), i.e. the first ratchet teeth 11 and the second ratchet teeth 21 can be engaged with each other so that the socket does not come out of the socket after being inserted into the socket.

In a specific embodiment, the elastic clamping ring 2 is a rigid elastic component, the second ratchet 21 has the same size as the first ratchet 11, and the elastic clamping ring 2 can be fixed and limited after being clamped on the first ratchet 11.

Referring to fig. 1, 2, 5 and 6, a second annular groove 22 is provided on the outer circumferential wall of the snap ring 2, and is connected to the socket boss 4. The second annular groove 22 is circumferentially provided on the outer wall of the snap ring 2, and the second annular groove 22 of the snap ring 2 is approximately U-shaped as viewed in a sectional view. The inner spacing of the second annular groove 22 is slightly larger than the thickness of the socket boss 4 and can be just tightly clamped with the socket boss 4.

In a specific embodiment, the bottom of the second annular groove 22 is not in contact with the socket boss 4, i.e. a gap is left at the bottom of the second annular groove 22. The gap can be used for buffering the impact force of the socket in the process of inserting the socket into the socket, and the sealing performance between the socket and the socket is ensured.

As a specific embodiment of the self-anchoring connection structure for the nodular cast iron pipe provided by the present invention, please refer to fig. 4 to 6, an opening is provided on the snap ring 2, and two groups of expanding holes 5 are provided on both sides of the opening; the diameter of the elastic snap ring 2 is adjusted by means of an expanding clamp inserted into the expanding hole.

The gap forms a break point of the elastic snap ring 2, so that the elastic snap ring 2 is in an unclosed (or broken) annular structure, and two ends of the elastic snap ring 2 are formed on two sides of the gap in a conformal manner.

The two ends of the elastic snap ring 2 are respectively provided with an expanding hole 5, and the expanding holes 5 are through holes. Owing to there is the setting of opening, the circular diameter that circlip 2 encloses just can realize adjusting, inserts the execution end of expansion pincers in expansion hole 5, gives the grip strength or the loosening force of expansion pincers through the external world, makes the centre gripping space grow or reduce of expansion pincers, can realize adjusting the grow or diminish of the diameter that circlip 2 encloses to can install circlip 2 on bellmouth boss 4.

The specific steps of installing the elastic snap ring 2 on the bellmouth boss 4 are as follows: the expansion pliers are firstly inserted into the expansion hole 5, the expansion pliers are pressed to reduce the diameter enclosed by the elastic clamping ring 2 until the outer diameter of the expansion pliers is smaller than the inner diameter of the socket boss 4, the elastic clamping ring 2 can be arranged at the position corresponding to the socket boss 4, namely, at the same radial position with the socket boss 4, then the expansion pliers are loosened, the elastic clamping ring 2 recovers (or rebounds) to the original size, and the second annular groove 22 at the outer side of the elastic clamping ring 2 can be clamped on the socket boss 4, so that the connection of the elastic clamping ring 2 and the socket boss 4 is realized.

In one embodiment, the expanding forceps is a kind of forceps, and as in the prior art, the actuating end of the expanding forceps holds the clamped object, and the clamped object can be expanded by external force.

Note that the seal 3 is attached to the inside of the socket before the elastic snap ring 2 is attached, and the seal 3 is attached to the inside of the socket in a conventional manner, and the seal 3 can be attached in accordance with the conventional technique.

As a specific embodiment of the self-anchoring connection structure for ductile iron pipes of the present invention, please refer to fig. 4 to 6, the expansion holes 5 include horizontal expansion holes 51 and vertical expansion holes 52 respectively disposed at both sides of the opening. Horizontal expansion hole 51 is the hole with the mutual parallel arrangement of the axis of snap ring 2, and perpendicular expansion hole 52 is the hole of the radial setting along snap ring 2, and horizontal expansion hole 51 and perpendicular expansion hole 52 all can realize adjusting the ring diameter that snap ring 2 enclosed, when installing snap ring 2, can adjust through horizontal expansion hole 51 or perpendicular expansion hole 52.

In one embodiment, the horizontal expansion holes 51 and the vertical expansion holes 52 are symmetrically arranged with gaps. The inner diameter of the horizontal expansion hole 51 or the vertical expansion hole 52 is larger than the outer diameter of the actuating end of the expansion forceps, and it can be understood that the expansion forceps can be smoothly inserted into the expansion hole 5 for operation.

As a specific embodiment of the self-anchoring connection structure for ductile iron pipes of the present invention, please refer to fig. 1 and 2, the inner side wall of the second annular groove 22 abuts against the outer wall of the socket boss 4. After the elastic snap ring 2 is arranged on the bellmouth boss 4, the second annular groove 22 positioned on the outer side of the elastic snap ring 2 can be just clamped on the bellmouth boss 4 and is abutted against the bellmouth boss 4 without a gap. The sealing performance is improved, and the connection stability between the socket and the spigot is improved after the spigot of the cast pipe is inserted into the socket.

Referring to fig. 1 and 2, a gap is provided between the bottom of the second annular groove 22 and the socket boss 4. After the elastic clamping ring 2 is installed on the socket boss 4, a gap is reserved between the groove bottom of the second annular groove 22 and the socket boss 4, the gap can buffer the impact force between the elastic clamping ring 2 and the socket in the inserting process, and the elastic clamping ring 2 can be compressed or rebounded, so that the gap reserved between the elastic clamping ring 2 and the socket boss 4 can meet the requirement of the arrangement.

Referring to fig. 1 and 2, an elastic snap ring 2 and a sealing member 3 are abutted to each other. When a socket and a spigot between adjacent cast pipes are connected with each other, the sealing performance and the connection stability between the sockets are ensured, the sealing element 3 is firstly installed on the inner side of the socket, then the elastic clamping ring 2 is installed, and the elastic clamping ring 2 is connected with the sealing element 3 in an abutting or contact manner, so that the connection tightness between the spigot and the socket can be ensured.

As a specific embodiment of the ductile iron pipe self-anchoring connection structure, please refer to fig. 1 and 2, bellmouth inside wall circumference is equipped with the arc boss 6 that is used for with 3 lock joints of sealing member, and the outside wall circumference of sealing member 3 is equipped with the arc recess with 6 looks adaptations of arc boss. A circle or circular arc-shaped boss 6 is arranged on the inner side of the socket of the cast pipe, the arc-shaped boss 6 can be mutually abutted or matched with the sealing element 3, so that the sealing element 3 can be arranged on the arc-shaped boss 6, and the sufficient sealing tightness between the socket and the socket is ensured.

In one embodiment, the outer diameter of the sealing element 3 is slightly larger than the inner diameter of the arc-shaped boss 6, so that the sealing element 3 can be tightly clamped on the inner side wall of the socket in a seaming mode and can be prevented from being separated from the socket. Similarly, the outer side wall of the sealing element 3 is provided with an arc-shaped groove matched with the arc-shaped boss 6, and the arc-shaped groove is matched and connected with the arc-shaped boss 6, so that after the socket is inserted into the socket, the sufficient sealing tightness between the socket and the socket can be ensured.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The self-anchoring connection structure of the nodular cast iron pipe is characterized by comprising:

the first annular groove is circumferentially arranged on the outer wall of the socket;

the inner side of the elastic clamping ring is used for connecting the first annular groove, and the outer side of the elastic clamping ring is used for clamping the bellmouth boss; and

the sealing element is arranged on the inner side of the socket and is used for sealing a gap between the socket and the socket; the socket is inserted in the socket and realizes self-anchoring connection by means of the elastic snap ring.

2. The self-anchoring connection structure for ductile iron pipes according to claim 1, wherein said first annular groove is provided with a row of first ratchet teeth for engaging with said snap ring.

3. The self-anchoring connection structure for ductile iron pipes as claimed in claim 2, wherein the inside of the snap ring is provided with a row of second ratchet teeth for being engaged with the first annular groove, and the second ratchet teeth are engaged with the first ratchet teeth and serve to limit the snap ring.

4. The self-anchoring connection structure for ductile iron pipes as claimed in claim 1, wherein the snap ring has a second annular groove on an outer circumferential wall thereof for engaging with the socket boss.

5. The self-anchoring connection structure for ductile iron pipes according to claim 1, wherein said snap ring is provided with a notch, and two sets of expanded holes are provided at both sides of said notch;

the diameter of the elastic snap ring is adjusted by means of expansion pliers inserted into the expansion holes.

6. The self-anchoring connection structure of ductile iron pipes as claimed in claim 5, wherein said expansion holes comprise a horizontal expansion hole and a vertical expansion hole, each of which is provided at both sides of said gap.

7. The self-anchoring joint structure of ductile iron pipes as claimed in claim 4, wherein the inner groove wall of the second annular groove and the outer wall of the socket boss abut against each other.

8. The self-anchoring connection structure of ductile iron pipes as claimed in claim 7, wherein a gap is provided between the groove bottom of the second annular groove and the socket boss.

9. The self-anchoring joint structure of ductile iron pipes as claimed in claim 1, wherein said snap ring and said sealing member abut each other.

10. The self-anchoring connection structure for the nodular cast iron pipe as recited in claim 1, wherein the inner side wall of the socket is circumferentially provided with an arc-shaped boss for fastening with the sealing element, and the outer side wall of the sealing element is circumferentially provided with an arc-shaped groove adapted to the arc-shaped boss.

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