CN219809550U - Self-anchored joint for cast iron pipeline - Google Patents

Abstract

The utility model belongs to the technical field of interface connection, and particularly discloses a cast iron pipeline self-anchored interface which comprises an insertion pipe and a receiving pipe, wherein a slot is arranged in the receiving pipe, and an insertion part at the end part of the insertion pipe is inserted into the slot; the non-return sealing piece is arranged in the slot and is respectively contacted with the plug pipe and the socket pipe; the locking assembly is arranged on the outer sides of the insertion pipe and the bearing pipe, the locking assembly forms a locking cavity, and the insertion pipe and the bearing pipe are located in the locking cavity and are fixedly connected through the locking assembly. The cast iron pipeline self-anchored joint combines the characteristics of flexible connection and rigid connection, has simple structure and easy processing and manufacturing, can realize the integral hoisting of a plurality of pipelines, and is particularly suitable for the butt joint of underground pipelines under the working condition of differential settlement of soil bodies.

Description

Self-anchored joint for cast iron pipeline

Technical Field

The utility model relates to the technical field of connection between cast iron pipelines, in particular to a cast iron pipeline self-anchored interface.

Background

With the rapid development of urban infrastructure construction, the situation that underground pipelines are laid in increasingly large numbers occurs in loess areas such as western security and the like. The possibility that the underground pipe in the differential settlement background of the collapsible loess high filling area is damaged is greatly improved compared with the common pipe. Because the underground pipeline engineering is built in the area, the problems of transverse fracture and damage of the pipeline and cracking and leakage of the pipeline interface can be generated due to different settlement amounts of the backfill or differential settlement of the backfill along the junction of the undisturbed soil and the backfill caused by different heights because the pipeline is paved in the backfill with different heights or the pipeline is paved in the undisturbed soil. Public pipeline facilities such as underground heat supply, power supply, fuel gas and water supply are the most important infrastructure for ensuring the normal operation of cities, and once safety accidents occur in the underground pipeline systems of cities, the underground pipeline systems of cities can cause great economic loss and huge social adverse effects.

Disclosure of Invention

The utility model aims to solve the problem of cracking of a pipeline joint in the prior art, and the problem of cracking and leakage at the pipeline joint is effectively solved by adopting a self-anchored joint cast iron pipeline.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the cast iron pipeline self-anchored interface comprises an insertion pipe and a bearing pipe, wherein a slot is arranged in the bearing pipe, and an insertion part at the end part of the insertion pipe is inserted into the slot;

the non-return sealing piece is arranged in the slot and is respectively contacted with the plug pipe and the socket pipe;

the locking assembly is arranged on the outer sides of the insertion pipe and the bearing pipe, the locking assembly forms a locking cavity, and the insertion pipe and the bearing pipe are located in the locking cavity and are fixedly connected through the locking assembly.

As a further development of the utility model, the non-return seal is an annular rubber ring which forms a non-return structure with a guide surface between the adapter tube and the plug tube.

As a further improvement of the utility model, the non-return structure is a bevel structure, the bevel structure is in contact with both the insertion pipe and the receiving pipe, and the contact surface of the bevel structure and the receiving pipe is larger than the contact surface of the bevel structure and the insertion pipe.

As a further improvement of the utility model, the non-return sealing element is a round table-shaped rubber ring with gradually increased cross-sectional area in the section view, in the round table-shaped rubber ring, the side with the smallest cross-sectional area is arranged close to the plug-in pipe.

As a further improvement of the utility model, the plug-in pipe also comprises a clamp which is positioned outside the plug-in pipe, and the plug-in pipe is positioned in a clamp cavity formed by the clamp.

As a further improvement of the utility model, the utility model further comprises a baffle ring positioned outside the bearing pipe, wherein the inner wall of the baffle ring is fixedly connected with the bearing pipe, and the side part of the baffle ring is fixedly connected with the clamp.

As a further improvement of the utility model, perforations are arranged along the inner wall in the length direction of the baffle ring and the clamp, and the locking component passes through the perforations.

As a further improvement of the utility model, a limit part is arranged at the side part of the baffle ring or the clamp, and a locking part on the locking component is locked on the limit part.

As a further improvement of the utility model, the locking device further comprises a gear part connected with the locking assembly, and a gear head of the gear part is positioned at the port of the perforation.

As a further development of the utility model, the inner wall of the clip is provided with a thread structure, and the clip is connected with the plug tube by the thread structure.

Compared with the prior art, the utility model has the following advantages:

1. the flexible connecting material adopted by the cast iron pipeline self-anchored joint is an inverted conical rubber ring. Compared with the common rubber ring, the inverted conical rubber ring is made of high-elasticity polymer material which is deformed reversely, and can restore to the original state after external force is removed; the inverted cone-shaped structure has good non-return property, so that the inverted cone-shaped structure can be tightly extruded between the bell mouth and the spigot of the cast iron pipeline; therefore, the inverted conical rubber ring can provide enough reverse friction force and rubber elasticity when the socket slips or two sections of connected cast iron pipelines slide up and down, and the joint of the underground pipelines is prevented from slipping, leaking and being damaged in rigidity.

2. The locking component adopted by the cast iron pipeline self-anchored joint is a hook locking bolt, the screw hole component mainly comprises a slope-shaped outer edge of a clamp bolt hole, the bolt hook of the locking component hooks the slope-shaped outer edge of the screw hole component, so that a socket is firmly contacted with a bell mouth, two adjacent cast iron pipelines are fixed together, and meanwhile, the locking component can move within a limited range at the screw hole component, so that the problem of cracking and leakage at the joint caused by dislocation displacement of the connected underground pipelines due to differential settlement of soil bodies can be well solved.

Drawings

FIG. 1 is a schematic diagram of a cast iron pipe self-anchored joint according to the present utility model;

FIG. 2 is a cross-sectional view of a seal member according to the present utility model;

in the figure:

1. a socket pipe; 2. a slot; 3. a non-return seal; 4. a baffle ring; 5. a clamp; 6. a locking assembly; 61. a gear part; 7. perforating; 8. a limit part; 9. the pipe is inserted.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

First, description is made in connection with the structure in the present embodiment.

Referring to fig. 1-2, the cast iron pipeline self-anchored interface comprises an insertion pipe 9 and an insertion pipe 1, wherein a slot 2 is arranged in the insertion pipe 1, and an insertion part at the end part of the insertion pipe 9 is inserted into the slot 2;

a non-return seal 3, wherein the non-return seal 3 is arranged in the slot 2, and the non-return seal 3 is respectively contacted with the plug tube 9 and the socket tube 1;

the locking assembly 6 is arranged on the outer sides of the plug tube 9 and the socket tube 1, the locking assembly 6 forms a locking cavity, and the plug tube 9 and the socket tube 1 are positioned in the locking cavity and are fixedly connected through the locking assembly 6.

In this embodiment, utilize locking subassembly 6 to carry out rigid locking connection with whole structure, but the inside then realizes flexible connection through the non return sealing member for it has combined flexible connection and rigid connection's characteristics, simple structure, and easy manufacturing can realize many pipelines integral hoisting, is particularly useful for the underground pipeline butt joint use under the differential settlement operating mode of soil body.

In this embodiment, the non-return sealing member has non-return and sealed effect simultaneously, and then can make grafting pipe and the adapter pipe tightly extrude together, has realized inside better flexonics, still possesses the leakproofness simultaneously.

In the embodiment, two adjacent cast iron pipelines are fixed together, and meanwhile, the locking assembly can move within a limited range at the screw hole assembly, so that the problem of cracking and leakage at the joint caused by dislocation displacement of the connected underground pipelines due to differential settlement of soil bodies can be well solved.

In order to achieve a better non-return and sealing, the non-return seal is an annular rubber ring, which forms a non-return structure with a guide surface between the adapter tube and the plug tube. In this embodiment, use the rubber circle as the sealing member, it has elasticity big, deformation big, is convenient for form the characteristics of multiple structure.

Specifically, the non-return structure is an inclined surface structure, and the inclined surface structure is contacted with the plug tube 9 and the socket tube 1, and the contact surface of the inclined surface structure and the joint pipe 1 is larger than the contact surface of the inclined surface structure and the joint pipe 9. At this time, the contact area with the joint pipe is large, so that the joint pipe has larger friction.

Referring to fig. 2, the check seal 3 is a circular truncated cone-shaped rubber ring having a gradually increasing cross-sectional area, and one side of the circular truncated cone-shaped rubber ring having a smallest cross-sectional area is disposed near the insertion tube 9, as seen in a sectional view. Specifically, the non-return sealing element 3 is in a cone structure, and compared with a common rubber ring, the inverted cone-shaped rubber ring is in a reverse deformation high-elasticity polymer material, so that the rubber ring can be restored after external force is removed; the inverted cone-shaped structure has good non-return property, so that the inverted cone-shaped structure can be tightly extruded between the bell mouth and the spigot of the cast iron pipeline; therefore, the inverted conical rubber ring can provide enough reverse friction force and rubber elasticity when the socket slips or two sections of connected cast iron pipelines slide up and down, and the joint of the underground pipelines is prevented from slipping, leaking and being damaged in rigidity.

In order to ensure a better fixation, the device further comprises a clamp 5 positioned outside the plug tube 9, wherein the plug tube 9 is positioned in a clamp cavity formed by the clamp 5. In this embodiment, the clamping band 5 is clamped, and a further fastening connection is achieved.

Further, in order to achieve rigid connection and protection of the adaptor pipe 1, the device further comprises a baffle ring 4 positioned outside the adaptor pipe 1, the inner wall of the baffle ring 4 is fixedly connected with the adaptor pipe 1, and the side part of the baffle ring 4 is fixedly connected with the clamp 5. In this embodiment, the outside of the socket pipe 1 and the plug pipe 9 is made to be metal-clad by the clip and the retainer ring, and the effect of the fixed connection between the metals is achieved. In this embodiment, the adapter tube and the retainer ring are welded together; the baffle ring is fastened with the clamp through bolts; the clamp is firmly screwed with the outer surface of the plug-in pipe; thus, the whole is rigidly connected together.

In order to realize locking, in the length direction of the baffle ring 4 and the clamp 5, through holes 7 are formed along the inner wall of the baffle ring 4 and the inner wall of the clamp 5, and the locking assembly 6 is arranged through the through holes 7. At this time, the clip and the retainer ring 5 are further fixed by the locking assembly.

Specifically, the side portion of the baffle ring 4 or the clip 5 is provided with a limiting portion 8, and the locking portion of the locking assembly 6 is locked on the limiting portion 8.

In use, a gear portion 61 is also included, connected to the locking assembly 6, with a gear head at the port of the aperture 7.

During specific assembly, a thread structure is arranged on the inner wall of the clamp 5, and the clamp 5 is connected with the plug-in pipe 9 through the thread structure.

In this embodiment, the upper part of the clip is short, and the upper part of the clip 5 is firmly connected with the baffle ring 4 through the locking component 6 (the length of the locking component 6 needs to be adapted, and a slope surface capable of moving within a limited range is provided); the lower part of the clamp 5 is fixedly connected with the plug tube 9 through a thread structure (the contact area is increased, the friction force is increased, and the fastening connection is realized) corresponding to the lower part of the clamp. The clamp is a whole.

Next, the description will be given mainly in connection with the unique check seal structure and the connection of the locking assembly in this embodiment.

In the embodiment, the self-anchored joint of the cast iron pipeline is mainly characterized in that the flexible connecting material adopted by the self-anchored joint of the cast iron pipeline, namely the non-return sealing element, is an inverted cone O-shaped rubber ring (namely a truncated cone structure). Compared with the common rubber ring, the inverted cone O-shaped rubber ring has the advantages that the rubber is a high-elasticity polymer material with reverse deformation, and the inverted cone O-shaped rubber ring can be restored after external force is removed; the inverted cone-shaped structure has good non-return property, so that the inverted cone-shaped structure can be tightly extruded between the bell mouth and the spigot of the cast iron pipeline; therefore, the inverted cone O-shaped rubber ring can provide enough reverse friction force and rubber elasticity when the jack slips or two sections of connected cast iron pipelines slide up and down, and the joint of the underground pipelines is prevented from slipping, leaking and being damaged in rigidity.

The rigid connection is mainly formed by fixing two cast iron pipelines which are connected together through a hook locking bolt. Therefore, the problem of cracking and leakage at the joint caused by dislocation displacement of the connected underground pipelines due to differential settlement of soil mass can be well solved.

In this embodiment, the flexible connection is effected by a seal (i.e. the non-return seal 3) consisting essentially of an inverted conical "O" shaped rubber ring, which is thin on the socket side and thick on the spigot side, compared with the common rubber ring, the sealing rubber ring can provide enough reverse friction force and rubber elasticity when the socket slips or two sections of connected cast iron pipelines move up and down.

The cast iron pipeline self-anchored joint adopts the mode of locking by using the hook locking bolt, and the hook hooks the slope-shaped outer edge of the rigid clamp bolt hole, so that the socket is firmly contacted with the bell mouth, and two adjacent cast iron pipelines are fixed together, and the phenomenon of slipping leakage does not occur. For rust prevention, the rigid clamp, the baffle ring and the hook locking bolt are made of stainless steel.

Again, the assembly process of the structure in connection with the present utility model will be mainly described.

Referring to fig. 1-2, the underground pipeline employs a cast iron pipeline self-anchored joint that combines the features of a flexible connection with a rigid connection. The flexible connection mainly comprises a reverse-conical rubber ring and the reverse-conical rubber ring is thin at the bell mouth side and thick at the spigot mouth side, so that the reverse-conical rubber ring has a sealing effect compared with a common rubber ring, and can provide enough reverse friction force and rubber elasticity when the spigot slips or two sections of connected cast iron pipelines move up and down.

The locking component 6 which is mainly formed by the locking component is inserted into the bolt hole of the clamping hoop 5 formed by the clamping hoop and penetrates through the baffle ring 4 outside the bell mouth, so that the bell-mouth pipe 1 formed by one cast iron pipe bell mouth and the plug-in pipe 9 formed by the other cast iron pipe spigot mouth are fixed together.

In the utility model, the assembly process of the insertion pipe and the bearing pipe is as follows:

1. the plug-in pipe is inserted into the socket pipe, and the inside of the plug-in pipe is connected through an inverted conical rubber ring.

2. The clamp is tightly connected with the plug-in pipe through a thread structure;

3. the clamp is rigidly connected with the baffle ring through a locking component;

4. the baffle ring is welded to the adapter tube.

In the above steps, the flexible connection is realized in the step 1, and the rigid connection is realized in the steps 2 to 4.

In this embodiment, the reverse conical rubber ring is embedded in the slot 2 of the bell mouth of the cast iron pipe, the socket of another cast iron pipe is inserted into the bell mouth of the cast iron pipe through the thick side of the reverse conical rubber ring (i.e. the round table-shaped rubber ring) by using larger initial pushing force, and the reverse conical rubber ring is tightly extruded between the bell mouth and the socket of the cast iron pipe due to the structure of the reverse cone, so that the slip of the cast iron pipe can be avoided. The rubber is a high-elasticity polymer material with reverse deformation, has high elasticity, can generate larger deformation, and can recover the original state after the external force is removed, so that the problem of cracking and leakage at the pipeline joint caused by differential settlement of soil bodies can be well solved.

The clamp 5 is firm with cast iron pipeline socket spiral through the screw thread structure of socket surface, and the clamp 5 is arranged with the baffle ring 4 just to the region and is had the bolt hole, and the bolt hole outer edge is spacing portion 8 that slope outer edge formed. The locking component 6 is inserted into the bolt hole of the clamp 5, one end of the big end of the locking component 6 is clamped at the perforation 7 formed by the screw hole component, and the other end of the locking component passes through the bellmouth outer baffle ring 4 and is fastened by a nut.

For rust prevention, the clamp 5, the socket outer baffle ring 4 and the locking assembly 6 are made of stainless steel. In the embodiment, the connection of the bolts is utilized, firstly, the locking is adopted, and the connecting pipe 8 is firmly connected with the clamp 5; secondly, the locking assembly 6 is allowed to move within a limited range at the perforation 7 (to better cope with the slipping or misplacement condition of the pipe connection).

The clamp 5 upper portion is firmly connected (need adapt to the length of locking subassembly 6) with keeping off ring 4 through locking subassembly 6, and clamp 5 lower part is through screw structure and grafting pipe fastening connection (increase area of contact, increase frictional force, realization fastening connection).

The utility model discloses a cast iron pipeline self-anchored joint, which solves the problems of cracking and leakage at the joint caused by slippage and dislocation displacement at the joint of an underground pipeline due to differential settlement of soil. The interface comprises an insertion pipe and a connection pipe, wherein the end part of the insertion pipe is inserted into the end part of the connection pipe, and the interface is characterized in that: the inner wall of the connecting pipe is provided with a groove, an inverted conical rubber ring is arranged in the groove to serve as a sealing piece, the inverted conical rubber ring is arranged on the thick side of the connecting pipe end, and the inverted conical structure has good non-return property, so that the connecting pipe and the connecting pipe can be tightly extruded together, and internal flexible connection is realized. The plug-in pipe is connected with the clamp through the thread structure, the clamp is connected with the baffle ring through the locking component, the baffle ring is welded on the joint pipe, the clamp, the locking component and the baffle ring are used for fully playing a rigid connection role, and two adjacent cast iron pipelines are fixed together.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (3)

1. The cast iron pipeline self-anchored joint comprises an insertion pipe and a joint pipe, and is characterized in that,

a slot is arranged in the socket pipe, and an insertion part at the end part of the plug-in pipe is inserted into the slot;

the non-return sealing piece is arranged in the slot and is respectively contacted with the plug pipe and the socket pipe;

the locking assembly is arranged outside the insertion pipe and the bearing pipe, forms a locking cavity, and is positioned in the locking cavity and fixedly connected through the locking assembly;

the plug-in pipe is positioned in a clamp cavity formed by the clamp;

the retainer ring is positioned outside the bearing pipe, the inner wall of the retainer ring is fixedly connected with the bearing pipe, and the side part of the retainer ring is fixedly connected with the clamp; perforations are formed along the inner wall in the length direction of the baffle ring and the clamp; the locking component is inserted into the through hole, one end of the big end of the locking component is clamped at the through hole, and the other end of the big end of the locking component penetrates through the baffle ring outside the adapter tube and is fastened through the nut;

the non-return sealing member is a round table-shaped rubber ring with the cross section area gradually increased, and in the round table-shaped rubber ring, one side with the smallest cross section area is close to the plug-in pipe.

2. The cast iron pipe self-anchored joint of claim 1, wherein the side of the retainer ring or clip is provided with a limit portion, and the locking portion formed by one end of the locking assembly big end is locked on the limit portion.

3. The cast iron pipe self-anchoring interface of claim 1, wherein the inner wall of the clamp is provided with a thread structure, and the clamp is connected with the plug pipe through the thread structure.