CN219062418U - Sealing gasket and half joint adopting same - Google Patents

Abstract

The utility model relates to a sealing element and a pipeline connecting piece adopting the sealing element, in particular to a sealing gasket and a half joint adopting the sealing gasket, which comprise two semicircular rings, wherein sealing strips are integrally connected between the end parts of the same side of the two semicircular rings, the outer side surface of the semicircular rings is a first conical surface, the relatively smaller ends of the two first conical surfaces are oppositely arranged, the inner side surface of the semicircular rings is integrally connected with a plurality of inner convex rings, the inner diameter of each inner convex ring is gradually reduced, one side of each inner convex ring is provided with a first inner conical surface, and the diameter of the first inner conical surface is gradually increased. The sealing gasket adopted by the utility model realizes sealing by utilizing at least two inner convex rings with specific structures, has certain automatic centering capability and capability of automatically matching with an optimal sealing surface, can still provide better sealing effect when the semicircular ring of the sealing gasket is compressed on one side, and has relatively small hidden danger of water leakage.

Description

Sealing gasket and half joint adopting same

Technical Field

The utility model relates to a sealing element and a pipeline connecting piece adopting the sealing element, in particular to a sealing gasket and a half joint adopting the sealing gasket.

Background

The half joint is a common pipeline repairing device and is mainly used for repairing the leakage position of a pipeline, and the sealing performance of the half joint directly influences the repairing effect of the half joint. The sealing performance of the sealing structure depends on the extrusion force of the connecting flange or the socket joint to the sealing ring, and after the pipe network is usually laid underground for a long time, the ground or the ground soil can be locally submerged under the action of the gravity of the pipe, so that the axes of the pipe and the socket joint are inclined relatively, and the connecting flange or the socket joint sleeved on the pipe is inclined relatively to the axis of the socket joint, so that the sealing ring is unilaterally compressed, and a certain hidden danger of water leakage exists.

In view of this, the present applicant has conducted intensive studies on a gasket and a huff-joint structure using the gasket, and has produced the present utility model.

Disclosure of Invention

The utility model aims to provide a sealing gasket with relatively small hidden danger of water leakage and a half joint adopting the sealing gasket.

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

the utility model provides a sealing gasket, includes two semicircle rings that are parallel to each other arranged, two all an organic whole is connected with the sealing strip between the tip that the semicircle ring is located same one side, the lateral surface of semicircle ring is first conical surface, two the great one end of first conical surface diameter is arranged in opposite directions, the medial surface of semicircle ring an organic whole is connected with a plurality of edges the interior bulge loop that the axis of semicircle ring was arranged in proper order, each interior bulge loop's internal diameter reduces gradually from the great one end of corresponding first conical surface diameter to the little one end direction of corresponding first conical surface diameter, and each interior bulge loop deviates from one side of sealing strip all has first interior conical surface, the diameter of first interior conical surface gradually increases gradually from the great one end of corresponding first conical surface diameter to the little one end direction of corresponding first conical surface diameter.

As an improvement of the utility model, the side of the inner convex ring facing the sealing strip is provided with a plane positioned on the radial direction of the semicircular ring or a second inner conical surface with the diameter gradually increasing from the relatively larger end of the corresponding first conical surface to the relatively smaller end of the corresponding first conical surface.

As an improvement of the utility model, one of the sealing strips is provided with a long groove which is arranged in parallel with the sealing strip, and the other sealing strip is integrally connected with a long strip which is matched with the long groove.

The utility model provides a half festival, includes two half festival halves that are connected each other can dismantle, two half festival half forms half festival assembly after the body interconnect, and two be formed with the perforation that is used for holding the pipeline between the half festival, two half festival half one side in opposite directions is located with the tip at perforation both ends is located the sealing groove that punishment do not has, the groove bottom surface of sealing groove is the second conical surface, two half festival half one side in opposite directions all pastes and is equipped with above-mentioned sealing gasket, two semicircle rings of sealing gasket one-to-one embedding correspond two in the sealing groove on half festival half, just first conical surface on the semicircle ring is hugged closely on the corresponding second conical surface, two sealing gasket is hugged closely each semicircle ring on the sealing gasket one-to-one and the semicircle ring that the mutual correspondence was arranged forms jointly and is used for holding tightly the ring body on the pipeline.

As an improvement of the utility model, the half-half of the half-half is respectively and integrally connected with an outer convex ring at the position corresponding to each sealing groove.

The improved half joint assembly comprises a half joint assembly body, wherein the half joint assembly body is provided with a plurality of holes, the half joint assembly body is provided with a plurality of through holes, the through holes are respectively connected with a plurality of locking components, the half joint assembly body is provided with a plurality of locking rings, the locking rings are respectively connected with two ends of the half joint assembly body, the locking rings are respectively connected with the through holes, the locking rings are respectively arranged coaxially with the through holes, the outer side walls of the locking rings are respectively provided with inclined guide surfaces, the inner holes of the locking rings are respectively provided with inclined guide surfaces matched with the inclined guide surfaces, the pressing covers are detachably connected to the half joint assembly body, and one ends of the locking rings, which face the through holes, directly or indirectly abut against the half joint assembly body.

As an improvement of the utility model, the convex ring is integrally connected with a convex lug, and the convex lug and the corresponding gland are connected with each other through a bolt component.

As an improvement of the half-joint, two ends of the half-joint are fixedly connected with mounting seats respectively through bolt assemblies, and the mounting seats are connected with the corresponding pressing covers through the bolt assemblies.

As an improvement of the utility model, the mounting seat is propped against one side of the corresponding outer convex ring away from the corresponding gland.

As an improvement of the utility model, each outer convex ring is sleeved with a connecting ring, the connecting rings cover the corresponding outer convex ring, the two connecting rings positioned at the same end of the half joint assembly are fixedly connected with each other through a bolt assembly, the connecting rings are integrally connected with lugs, and the lugs are connected with the corresponding gland through the bolt assembly.

As an improvement of the utility model, the half joint assembly is sleeved with a connecting flange propped against the outer convex ring, the outer convex ring is positioned between the corresponding connecting flange and the corresponding gland, the connecting flange and the corresponding gland are connected with each other through a bolt assembly, the connecting flange comprises two semi-ring bodies, and the two semi-ring bodies are connected with each other through a bolt assembly.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. the sealing gasket adopted by the utility model realizes sealing by utilizing at least two inner convex rings with specific structures, and sealing is realized without using the extrusion of a connecting flange or a socket joint, and as the outer side surface of the semicircular ring is a conical surface, the diameter of the first inner conical surface of each inner convex ring gradually decreases from the first end to the second end, the sealing gasket has certain automatic centering capability and the capability of automatically matching with an optimal sealing surface, and can still provide better sealing effect when the semicircular ring of the sealing gasket is compressed by a single side, and the hidden danger of water leakage is relatively small.

2. Because the internal diameter of each inner convex ring of the pipeline sealing ring gradually increases from the first end to the second end, the pipeline sealing ring is convenient to be matched with pipelines with different diameters, has a relatively wide application range, and is beneficial to increasing the sealing effect.

3. Through setting up elongated slot and rectangular, help avoiding two sealed gasket turns external force effect down dislocation each other in the installation, improve installation effectiveness.

4. Because the locking ring directly or indirectly abuts against the half joint assembly, the relative inclination between the pipeline and the axis of the half joint can be avoided.

Drawings

FIG. 1 is a schematic structural view of a gasket according to a first embodiment;

FIG. 2 is an enlarged view of a portion of the position A of FIG. 1;

FIG. 3 is a schematic structural view of a gasket according to a second embodiment;

FIG. 4 is an enlarged view of a portion of the location B of FIG. 2;

fig. 5 is a schematic structural view of a huff joint according to the third embodiment;

FIG. 6 is a schematic cross-sectional view of a half joint of the third embodiment;

fig. 7 is a schematic structural view of a huff joint according to the fourth embodiment;

fig. 8 is a schematic structural view of a huff joint according to a fifth embodiment;

fig. 9 is a schematic structural view of a huff joint according to a sixth embodiment;

FIG. 10 is a schematic view showing a cut-away structure of a half joint of the sixth embodiment;

fig. 11 is a schematic structural view of a huff joint according to the seventh embodiment;

fig. 12 is a schematic cross-sectional structure of a half joint of the seventh embodiment.

The labels correspond to the following:

10-sealing gasket; 11-semicircle ring;

12, sealing strips; 13-a first conical surface;

14-an inner convex ring; 15-a first internal conical surface;

16-an elongated slot; 17-strips;

20-half of a half-section; 21-an outer collar;

22-lugs; 23-mounting seats;

24-connecting ring; 25-connecting flanges;

30-a locking assembly; 31-capping;

32-locking ring.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and specific examples.

Embodiment one.

As shown in fig. 1 and 2, the present embodiment provides a sealing gasket 10, which is mainly applied to a sealing structure of a huff joint, the sealing gasket 10 is made of rubber or silica gel, and includes two semicircular rings 11 arranged in parallel with each other, and sealing strips 12 are integrally connected between the ends of the same sides of the two semicircular rings 11, that is, the sealing strips 12 are two, each sealing strip 12 is connected between the ends of the same sides of the two semicircular rings 11, the sealing strips 12 are mainly used for sealing a connection position between two halves of the huff joint, the semicircular rings 11 are mainly used for sealing between the huff joint and a pipeline, and a specific sealing manner is the same as that of a conventional huff joint sealing gasket, and is not described in detail herein.

The outer side of the semicircular ring 11 is the first conical surface 13, so that the sealing gap between the semicircular ring 11 and the half of the half joint can be automatically filled by utilizing water pressure, and the sealing effect is improved. The opposite ends of the first conical surfaces 13 of the two semicircular rings 11 with relatively larger diameters are arranged, because the half joints are mainly used for repairing pipelines, liquid such as water or oil can flow out from the broken parts of the pipelines, enter the gaps between the pipelines and the half joints and flow towards the two ends of the half joints, and therefore, the directions of water flows at the two semicircular rings 11 are opposite in use, and the sealing directions of the two semicircular rings are opposite. The inner side surface of the semicircular ring 11 is integrally connected with a plurality of inner convex rings 14 which are sequentially arranged along the axis of the semicircular ring 11, and the inner diameter of each inner convex ring 14 gradually decreases from one end with relatively larger diameter of the corresponding first conical surface 13 (the corresponding inner convex ring 14 and the first conical surface 13 are positioned on the same semicircular ring 11) to one end with relatively smaller diameter of the corresponding first conical surface 13, so that different pipeline diameters are suitable, and good sealing can still be realized under the condition that larger errors exist in the outer diameter of the pipeline or the condition that the outer diameter of the pipeline changes due to expansion and contraction.

Each inner convex ring 14 has a first inner tapered surface 15 on a side facing away from the sealing strip 12, and the diameter of the first inner tapered surface 15 gradually increases from a relatively larger diameter end of the corresponding first tapered surface 13 to a relatively smaller diameter end of the corresponding first tapered surface 13. In this way, when the sealing is performed, the first inner conical surface 15 can be utilized to realize automatic centering, during normal use, the two sealing gaskets 10 are spliced in opposite directions, the two semicircular rings 11 positioned on the same side are spliced with each other to form a circular ring body, the sealing line on the pipeline is circular, at the moment, one sealing surface with the best sealing effect matched with the pipeline exists in each first inner conical surface 15, the compression rate of the inner convex ring 14 corresponding to the sealing surface is optimal, when the axes of the pipeline and the half joint are inclined relatively, the sealing surface on the pipeline is enlarged, the sealing line is changed from circular to elliptical, the sealing effect of the first inner conical surface 15 with the best sealing effect originally can be changed along with the circular sealing surface, the other sealing surface with the best sealing effect matched with the pipeline can be realized, the water pressure and the acting force of the pipeline on different positions on the first conical surface 14 can be automatically matched with the optimal sealing surface, the compression amount can be automatically changed, water leakage can be effectively avoided, and good sealing can be still provided when the axes of the pipeline and the half joint are inclined relatively; meanwhile, as the taper directions of the first inner conical surface 15 and the first conical surface 13 are opposite, larger radial acting force can be generated under the impact of water flow, so that good sealing effect is achieved between each semicircular ring 11 and the pipeline and between each semicircular ring 11 and the half joint.

The side of the inner convex ring 14 facing the sealing strip 12 is provided with a plane positioned on the radial direction of the semicircular ring 11, so that when water flows outwards from the inner cavity of the half joint, the water flow can be blocked, the inner convex ring 14 can be pressed on a pipeline by utilizing water pressure, and the sealing effect is improved.

In addition, one of the sealing strips 12 is provided with a long groove 16 which is arranged in parallel with the sealing strip 12, and the other sealing strip 12 is integrally connected with a long strip 17 which is matched with the long groove 16. When in use, the two sealing gaskets 10 are oppositely attached together, so that the long strip 17 on each sealing gasket 10 is embedded into the long groove 16 of the other sealing gasket 10, and the two sealing gaskets 10 are effectively prevented from being arranged in a staggered way under the action of external force or water pressure.

Embodiment two.

As shown in fig. 3 and 4, the present embodiment provides a gasket 10, which is different from the first embodiment in that the inner convex ring 14 closest to the sealing strip 12 has a structure different from the first embodiment in that, in the present embodiment, the side of the inner convex ring 14 closest to the sealing strip 12 facing the sealing strip 12 has a second inner conical surface with a diameter gradually increasing from the relatively larger end of the corresponding first conical surface 13 to the relatively smaller end of the corresponding first conical surface 13, i.e. both sides of the inner convex ring 14 have inner conical surfaces with V-shaped or trapezoid cross sections, so that the inner convex ring 14 has a larger elastic deformation space with elastic deformability, and the inner convex ring 14 is prevented from being excessively compressed to cause sealing failure when the outer diameter of the pipe is relatively larger.

Embodiment three.

As shown in fig. 5 and 6, and referring to fig. 1 to 4, the present embodiment provides a half joint including two half joint half bodies 20 detachably connected to each other by bolts, the two half joint half bodies 20 being connected to each other to form a half joint assembly, and a through hole for holding a pipe (which is not a part of the half joint provided in the present embodiment but an object of action thereof) being formed between the two half joint half bodies 20 even if the pipe is inserted in the through hole when in use. The sealing gaskets 10 are attached to the opposite sides of the half-half bodies 20, namely, two sealing gaskets 10 are provided, and the sealing gaskets 10 are the sealing gaskets provided in the first embodiment or the second embodiment.

The opposite sides of the half bodies 20 are respectively provided with a sealing groove at the positions corresponding to the end parts of the two ends of the perforation, the bottom surfaces of the grooves of the sealing grooves are second conical surfaces, the two side walls are mutually arranged in parallel, the two semicircular rings 11 of the sealing gasket 10 are embedded into the two sealing grooves on the corresponding half bodies 20 one by one, the first conical surfaces 13 on the semicircular rings 11 are clung to the corresponding second conical surfaces, and thus the compression amount of the semicircular rings 11 can be automatically adjusted according to the water pressure by utilizing the two conical surfaces.

The two sealing gaskets 10 are mutually clung, the strip 17 on one sealing gasket 10 is embedded into the long groove 16 on the other sealing gasket 10, the semicircular rings 11 on the two sealing gaskets 10 are arranged in a one-to-one correspondence mode, and the semicircular rings 11 which are mutually arranged in a corresponding mode form a torus for being clung to a pipeline together.

The two half-sections 20 may have identical or different structures, for example, a pressure relief hole may be formed in one half-section 20, while the other half-section 20 does not need to be formed. The half joint half body 20 is respectively and integrally connected with an outer convex ring 21 at the positions corresponding to the sealing grooves, so that the wall thickness uniformity of the half joint half body 10 is ensured more easily, and the casting is facilitated.

Example four.

As shown in fig. 7, this embodiment provides a half joint, which is different from the third embodiment in that the half joint further includes locking assemblies 30 respectively connected to two ends of the half joint assembly, and a connection structure matched with the locking assemblies is disposed on the half joint half body 20, and the half joint and the pipeline can be fixedly connected by using the locking assemblies 30 and the connection structure, so as to avoid sliding of the half joint relative to the pipeline.

The locking assembly 30 comprises a gland 31 with an inner hole and a locking ring 32 positioned in the inner hole of the gland 31, wherein the gland 31 is a split gland, for example, the gland 31 can comprise two covers which are detachably connected through bolts, and the two covers can be completely separated, so that the gland 31 can be firstly split and then combined on a pipeline, and the gland 31 is conveniently sleeved into the pipeline (because the pipe diameter of the pipeline which needs to be repaired by using a half joint is usually relatively large); the locking ring 32 is coaxially disposed with the through hole, and the outer side wall of the locking ring 32 has an inclined guide surface, and the locking ring 32 with the inclined guide surface is a conventional locking ring, for example, a locking ring used in a locking pipe joint disclosed in chinese patent with an authorized publication number of CN216715490U or a locking ring used in a pipe locking assembly disclosed in chinese patent with an authorized publication number of CN216666794U, or a plurality of independent locking blocks or locking blocks arranged annularly to form the locking ring 32 if necessary, for example, a locking block used in a locking assembly of a pipe connector disclosed in chinese patent with an authorized publication number of CN217422484U, etc., which will not be described in detail herein. The hole of gland 31 has with oblique guide face complex inclined pressure face, and gland 31 is through dismantling the connection on the half joint assembly with the bolt that perforated axis parallel arrangement, locking ring 32 is towards the one end of perforation direct or indirect butt on the half joint assembly, concretely, the connection structure that sets up on half joint half 20 with locking component complex is a plurality of lug 22 that connect in an organic whole on outer bulge loop 21 and take perforated axis as the center to wind, first perforation has been seted up on the lug 22, second perforation has also been seted up in the position department that corresponds with each first perforation, it has same bolt to alternate in first perforation and the second perforation that corresponds each other, bolted connection has the nut to form the bolt assembly on the bolt, utilize the bolt assembly to link together lug 22 and gland 31 can be dismantled again, when locking gland 31 is locked on lug 22, gland 31 can utilize inclined pressure face to compress tightly locking ring 32 for realize the connection, compare the structure that directly adopts the screw to lock and fasten on the pipeline, it is more fragile pipeline to carry out the fastening structure.

The bolt for connecting the two covers and the bolt for connecting the gland 31 and the lug 22 may be the same bolt or may be different bolts. The locking ring 32 can directly abut against the half joint assembly, or indirectly abut against the half joint assembly through parts such as washers or cushion blocks, so long as the axial limit can be formed on the locking ring 32.

Example five.

As shown in fig. 8, this embodiment provides a huff joint, which is different from the fourth embodiment in that the huff joint plate body 20 in this embodiment has no integral connection lug 22, in this embodiment, two ends of the huff joint half body 20 are fixedly connected with mounting seats 23 through bolt assemblies respectively, and first through holes originally formed in the lug 22 are formed in the mounting seats 23 instead, so that the mounting seats 23 and corresponding pressing covers 31 are connected with each other through the bolt assemblies.

It should be noted that, the bolt assembly adopted between the mounting seat 23 and the gland 31 and the bolt assembly adopted between the mounting seat 23 and the half-half body 20 may be bolt assemblies of the same specification, or may be bolt assemblies of different specifications, and as the two half-bodies 20 are usually connected by adopting the bolt assemblies, the bolt assembly adopted between the mounting seat 23 and the gland 31 may be the same bolt assembly as one of the bolt assemblies for connecting the two half-bodies 20.

Preferably, the mounting seats 23 bear against the side of the corresponding outer collar 21 remote from the corresponding gland 31, which helps to avoid buckling of the mounting seats 23 under tension.

Example six.

As shown in fig. 9 and 10, this embodiment provides a huff joint, which is different from the fourth embodiment in that the huff joint plate body 20 in this embodiment has no integral connection lug 22, in this embodiment, each outer convex ring 21 is sleeved with a connection ring 24, the connection rings 24 cover the corresponding outer convex rings 21, two connection rings 24 located at the same end of the huff joint assembly are fixedly connected with each other through a bolt assembly, meanwhile, the connection rings 24 are integrally connected with lugs 22, and the lugs 22 are provided with first perforations so that the lugs 22 and corresponding press covers 31 are connected with each other through the bolt assembly. In this way, when the connection is realized, the sealing performance of the sealing gasket 10 can be prevented from being influenced by expansion or deformation of the two ends of the half joint assembly under the action of water pressure.

It should be noted that, the bolt assemblies used between the lug 22 and the gland 31, the bolt assemblies used for connecting the two half-sections 20, and the bolt assemblies used for connecting the two corresponding connecting rings 24 may be bolt assemblies of the same specification or bolt assemblies of different specifications, and preferably, in this embodiment, the bolt assemblies used for connecting the two corresponding connecting rings 24 and one of the bolt assemblies used for connecting the two half-sections 20 are the same bolt assembly.

Example seven.

As shown in fig. 11 and 12, this embodiment provides a huff joint, which is different from the fourth embodiment in that the huff joint half body 20 in this embodiment has no integral connection lug 22, in this embodiment, the huff joint assembly is sleeved with two connection flanges 25 respectively abutting against each outer convex ring 21, specifically, the two connection flanges 25 are respectively matched with two outer convex rings 21 on the huff joint half body 20, in order to facilitate the sleeve-setting of the connection flanges 25 on the huff joint assembly, the connection flanges 25 are split connection flanges, specifically, the connection flanges 25 comprise two half ring bodies, each half ring body is provided with a first perforation for inserting bolts, and the two half ring bodies are connected with each other through a bolt assembly. The connecting flange 25, the gland 31 and the outer convex ring 21 which are positioned at the same end of the half joint assembly are the connecting flange 25, the gland 31 and the outer convex ring 21 which are mutually corresponding, the outer convex ring 21 is positioned between the corresponding connecting flange 25 and the corresponding gland 31, and the connecting flange 25 and the corresponding gland 31 are mutually connected through a bolt assembly.

Preferably, in order to achieve double or multiple fastening, there may be a plurality of locking assemblies 30, and in this embodiment, two locking assemblies 30 are provided at both ends of the half joint assembly. In order to ensure that the locking rings 32 on each locking assembly 30 can be axially limited at the same end of the half joint assembly, in addition to the locking assembly 30 with the farthest distance from the half joint assembly, one end of the gland 31 of each locking assembly 30, which is far away from the half joint assembly, is integrally connected with a conical sleeve for propping against the locking ring 32 at the corresponding position. In addition, at the same end of the half joint assembly, each gland 31 can be connected with the half joint assembly through the same bolt, at this time, a nut spirally connected to the bolt is required to be abutted against one side of the other gland 31 away from the half joint assembly, so as to ensure that each gland 31 can be locked; the pressing caps 31 may be connected to the half joint assembly after being connected to each other by bolt assemblies.

The present utility model has been described in detail with reference to the accompanying drawings, but the embodiments of the present utility model are not limited to the above embodiments, and those skilled in the art can make various modifications to the present utility model according to the prior art, which are all within the scope of the present utility model.

Claims (11)

1. The utility model provides a sealing gasket, includes two semicircle rings that are parallel to each other arranged, two all an organic whole is connected with the sealing strip between the tip that the semicircle ring is located same one side, a serial communication port, the lateral surface of semicircle ring is first conical surface, two the relatively great one end of first conical surface diameter is arranged in opposite directions, the medial surface of semicircle ring an organic whole is connected with a plurality of edges the axis of semicircle ring arranges in proper order, each the internal diameter of interior bulge loop reduces gradually from the relatively great one end of corresponding first conical surface diameter to the relatively little one end direction of corresponding first conical surface diameter, and each the interior bulge loop deviates from one side of sealing strip all has first interior conical surface, the diameter of first interior conical surface increases gradually from the relatively great one end of corresponding first conical surface diameter to the relatively little one end direction of corresponding first conical surface diameter.

2. The gasket of claim 1 wherein a side of said inner collar facing said sealing strip has a flat surface lying radially of said semicircular ring or a second inner conical surface of progressively increasing diameter from a relatively larger diameter end of the corresponding first conical surface to a relatively smaller diameter end of the corresponding first conical surface.

3. The gasket of claim 1 wherein one of said sealing strips defines an elongated slot disposed parallel to said sealing strip and the other of said sealing strips is integrally connected to a strip which mates with said elongated slot.

4. The half joint comprises two half joint halves which are detachably connected with each other, the two half joint halves are connected with each other to form a half joint assembly, a through hole for holding a pipeline is formed between the two half joint halves, the half joint assembly is characterized in that one opposite sides of the two half joint halves are respectively provided with a sealing groove at positions corresponding to the end parts of two ends of the through hole, the bottom surface of each sealing groove is a second conical surface, one opposite sides of the two half joint halves are respectively provided with sealing gaskets according to any one of claims 1-3, the two half rings of each sealing gasket are embedded into the two sealing grooves on the corresponding half joint halves one by one, the first conical surfaces on the half rings are tightly attached to the corresponding second conical surfaces, the two sealing gaskets are mutually tightly attached, and the half rings on the two sealing gaskets are arranged in a one-to-one correspondence, and the half rings which are mutually and correspondingly arranged are jointly formed into a ring body for tightly holding the pipeline.

5. The half joint according to claim 4, wherein said half joint halves are integrally connected with outer collars at positions corresponding to each of said seal grooves, respectively.

6. A half joint according to claim 5, further comprising locking assemblies respectively connected to both ends of the half joint assembly, the locking assemblies comprising a gland having an inner bore and a locking ring located in the inner bore of the gland, the locking ring being coaxially disposed with the bore, an outer sidewall of the locking ring having a sloped surface, the inner bore of the gland having a sloped surface mating with the sloped surface, and the gland being removably connected to the half joint assembly, the locking ring being directly or indirectly biased against the half joint assembly toward one end of the bore.

7. The huff node of claim 6, wherein said outer collar is integrally connected with lugs, said lugs being interconnected with corresponding said glands by bolt assemblies.

8. The half joint according to claim 6, wherein two ends of the half joint half body are fixedly connected with mounting seats respectively through bolt assemblies, and the mounting seats and the corresponding gland are connected with each other through the bolt assemblies.

9. A huff joint according to claim 8, wherein said mounting seats bear against a side of a corresponding said male collar remote from a corresponding said gland.

10. The huff link of claim 6, wherein each of said outer collars is sleeved with a connecting ring, said connecting rings are wrapped with corresponding said outer collars, two of said connecting rings at the same end of said huff link assembly are fixedly connected to each other by a bolt assembly, said connecting rings are integrally connected with lugs, and said lugs are connected to corresponding said glands by a bolt assembly.

11. The huff joint of claim 6, wherein said huff joint assembly is sleeved with a connecting flange which abuts against said outer collar, said outer collar is positioned between said corresponding connecting flange and said corresponding gland, said connecting flange and said corresponding gland are connected to each other by a bolt assembly, said connecting flange comprises two half-rings, and said two half-rings are connected to each other by a bolt assembly.

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