CN220268702U - Pipeline splicing structure easy to disassemble and assemble - Google Patents

Abstract

The utility model discloses an easily-disassembled pipeline splicing structure in the technical field of pipeline connection, which comprises a circular straight pipe with openings at two ends of a connecting piece, wherein a locking piece is detachably locked at the outer end of the connecting piece through threads, and a sealing ring, a clamping base, a clamping spring and the locking piece are detachably sleeved and locked outside a connecting pipe; the clamping spring can be clamped on the outer wall of the connecting pipe in a one-way, the device can be used for completing sealing butt joint by directly plugging the pipeline, can also prevent the pipeline from sliding out of the connecting piece, is tightly connected without welding, is simple to operate and low in installation environment requirement, can be used for dismantling the pipeline after the installation is completed, is high in fault tolerance rate of connection operation of the device and the pipeline, can be repeatedly disassembled and assembled to be matched with each other, can achieve butt joint of the pipeline at the most suitable length, is provided with elastic fit, can have a certain shrinkage and expansion space, and is particularly suitable for connection of refrigeration pipelines.

Description

Pipeline splicing structure easy to disassemble and assemble

Technical Field

The utility model relates to the technical field of pipeline connection, in particular to an easily-detachable pipeline splicing structure.

Background

In refrigeration pipeline trade, general cooling tube is convenient quick for heat transfer, uses all to be the copper pipe, when connecting the pipe fitting, generally just abandoned the convenience of pipeline dismouting for the leakproofness of connection, consequently at present traditional this kind of only pipe fitting all is the mode of using the welding, firm in connection, but welded installation and dismantlement are all inconvenient.

The welding process is complicated, and more working hours are consumed by adopting open flame welding; has high heat, produces harmful gases and runs the risk of leakage; meanwhile, the welding technique workers can be on duty only by holding professional welding skill certificates, so that each time of pipeline installation, a high-skill welding person is required to be equipped, the personnel cost is too high, the installation conditions are too severe, the requirements on the environment are also very high, and great inconvenience is brought to the installation.

When two different pipelines are completely welded together, although the pipelines are tightly sealed at the time, the connection is firm, but the refrigerating pipelines can generate larger temperature change and generate larger heat expansion and cold contraction, the welding points are easy to break when expanding and shrinking due to the completely welded connection mode, no avoiding space exists, and the pipelines cannot be disassembled at all, so that the welding mode is gradually abandoned in the refrigerating pipeline industry.

At present, some ways of clamping and connecting pipelines exist, but the disassembly and the assembly are still unchanged, so that the pipelines cannot be disassembled after the assembly for high tightness, the pipelines or the connectors can only be removed violently, the fault tolerance of the pipeline connection operation is low, the operation is inconvenient, and the pipelines and the connectors are greatly lost due to the misassembly.

Based on the above, the utility model designs an easily-detachable pipeline plugging structure to solve the above problems.

Disclosure of Invention

The utility model aims to provide a pipeline splicing structure easy to disassemble and assemble, the pipeline connection mode of the device can finish sealing butt joint by directly splicing the pipeline, and can also prevent the pipeline from sliding out of a connecting piece, so that the pipeline can be conveniently and tightly plugged with the connecting piece in a sealing way, welding is not required, the operation is simple, the installation environment requirement is low, the pipeline can be dismantled after the installation is finished, the dismantling operation can be finished only by a knob locking piece, the use is simple, the fault tolerance rate of the device and the pipeline connection operation is high, the repeated disassembly and assembly can be carried out, the pipeline can be butted at the optimal length, the device has elastic fit, and a certain expansion space can be provided, so that the device is particularly suitable for the connection of a refrigerating pipeline.

The utility model is realized in the following way: an easy dismouting pipeline grafting structure includes:

the connecting piece, the clamp spring, the locking piece and the connecting pipe;

the connecting piece is a circular straight pipe with openings at two ends, a clamping step is arranged in one end of the connecting piece, and the aperture of the clamping step is smaller than that of the connecting piece;

the locking piece is a cylinder with threads arranged outside, and is detachably locked at the outer end of the connecting piece through the threads;

a sealing ring, a clamping base and a clamping spring are further arranged between the clamping step and the locking piece, and the sealing ring, the clamping base, the clamping spring and the locking piece are sequentially arranged from inside to outside;

the inner wall of the locking piece is also provided with an annular sealing groove, and a sealing ring is sleeved in the sealing groove;

the sealing ring, the clamping base, the clamping spring and the locking piece can be separated and sleeved and locked outside a connecting pipe;

the clamping springs can be clamped on the outer wall of the connecting pipe in a one-way non-return mode, and the clamping springs can be clamped between the clamping base and the locking piece in a separated mode.

Further, the clamp spring is a tooth-shaped clamp spring with a complete circular ring, a plurality of spike-shaped tooth-shaped structures are uniformly arranged on the edge of the inner ring of the clamp spring, and teeth of the inner ring of the clamp spring extend forwards in an inclined manner;

the outer ring of the clamp spring is a ring on the same plane;

the outer side surface of the clamping base is also provided with a limiting table, the diameter of the limiting table is smaller than the diameter of the outer ring of the clamp spring, and the diameter of the limiting table is larger than the diameter of the connecting pipe;

the outer ring plane of the clamp spring is attached and clamped between the limiting table and the locking piece.

Further, the outer end of the locking piece is also provided with a locking nut, and the locking piece and the locking nut are of an integral structure;

the locking nut extends out of the connecting piece.

Further, two sealing rings are clamped between the clamping step and the inner end surface of the clamping base; each sealing ring is in interference fit with the connecting pipe;

the diameter of the inner hole of the clamping step is smaller than the outer diameter of the connecting pipe.

The beneficial effects of the utility model are as follows: 1. the connecting pipe is directly inserted into the clamping step of the connecting piece, the limiting is accurate, the connecting pipe can be clamped through the clamping spring, the connecting pipes are prevented from slipping and separating, the device is convenient to operate, the connecting pipe is only required to be inserted into the inner hole of the locking piece to be abutted against the clamping base for connection, the inserting depth of the connecting pipe can be adjusted according to the requirement, welding is not used, the connecting pipe and the connecting piece can be conveniently assembled in a sealing mode, the pressure bearing capacity is achieved, the installation environment of the device and the requirements of personnel are reduced, the application range is wide, and the device is simple to use;

2. the device can separate the connecting pipe from the connecting piece through the knob locking piece after the connecting piece is misplaced, so that the connecting pipe can be reinstalled, the connecting pipe and the connecting piece can be repeatedly connected, the fault tolerance is high, and the connecting pipe is convenient to disassemble and assemble;

3. the connecting pipe of this device is tightly clamped with the connecting piece through the reverse tooth of jump ring, and sealed by means of a plurality of sealing washer suit compresses tightly sealedly for this device can also follow connecting pipe cooperation elasticity change when the connecting pipe receives cold and hot change and takes place to shrink and expand, not only can be continuous with the connecting pipe chucking, also can come back and forth flexible and the pipe diameter swell shrink of back and forth deformation cooperation connecting pipe through the jump ring, ensures sealed stability, can also cooperate the change of shrink and expand.

Drawings

The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic view of the lower end of the assembled structure of the present utility model;

FIG. 2 is a schematic top view of the assembled structure of the present utility model;

FIG. 3 is an exploded view of the overall structure of the present utility model;

FIG. 4 is a schematic view of another angular explosion of the present utility model;

FIG. 5 is a schematic view of the internal structure of the present utility model;

fig. 6 is an exploded view of the same embodiment of the two-end assembly structure of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

the sealing device comprises a 1-connecting piece, a 11-sealing ring, a 12-clamping step, a 2-clamping spring, a 21-clamping base, a 22-limiting table, a 3-locking piece, a 31-locking nut, a 32-sealing groove, a 4-connecting pipe, a 41-locking cylinder and a 42-sealing sleeve.

Detailed Description

Referring to fig. 1 to 6, the present utility model provides a technical solution: an easy dismouting pipeline grafting structure includes:

the connecting piece 1, the clamp spring 2, the locking piece 3 and the connecting pipe 4;

the connecting piece 1 is a circular straight pipe with two open ends, a clamping step 12 is arranged in one end of the connecting piece 1, and the aperture of the clamping step 12 is smaller than that of the connecting piece 1;

the locking piece 3 is a cylinder with threads arranged outside, and the locking piece 3 is detachably locked at the outer end of the connecting piece 1 through threads;

a sealing ring 11, a clamping base 21 and a clamping spring 2 are further arranged between the clamping step 12 and the locking piece 3, and the sealing ring 11, the clamping base 21, the clamping spring 2 and the locking piece 3 are sequentially arranged from inside to outside;

the inner wall of the locking piece 3 is also provided with an annular sealing groove 32, and a sealing ring 11 is sleeved in the sealing groove 32;

the sealing ring 11, the clamping base 21, the clamping spring 2 and the locking piece 3 can be separated and sleeved and locked outside the connecting pipe 4;

the clamping spring 2 can be clamped on the outer wall of the connecting pipe 4 in a one-way non-return manner, the clamping spring 2 can be clamped between the clamping base 21 and the locking piece 3 in a separated manner, the connecting pipe 4 of the device can be connected in a sealing manner by directly plugging the connecting pipe 4, and the connecting pipe 4 can be prevented from sliding out of the connecting piece 1, so that the connecting pipe 4 can be conveniently and tightly plugged with the connecting piece 1 in a sealing manner, welding is not required, the operation is simple, the installation environment requirement is low, the connecting pipe 4 can be dismantled after the installation is completed, the dismantling operation can be completed only by the knob locking piece 3, the use is simple, the fault tolerance of the connecting operation of the device and the connecting pipe 4 is high, the repeated disassembly and assembly can be carried out, the butt joint of the connecting pipe 4 in the most suitable length can be achieved, the device has elastic fit and a certain expansion space, and is particularly suitable for the connection of the refrigerating connecting pipe 4.

The clamping spring 2 is a tooth-shaped clamping spring of a complete circular ring, a plurality of spike-shaped tooth-shaped structures are uniformly arranged on the edge of the inner ring of the clamping spring 2, and teeth of the inner ring of the clamping spring 2 obliquely extend forwards;

the outer ring of the clamp spring 2 is a circular ring on the same plane;

the outer side surface of the clamping base 21 is also provided with a limiting table 22, the diameter of the limiting table 22 is smaller than the outer ring diameter of the clamp spring 2, and the diameter of the limiting table 22 is larger than the diameter of the connecting pipe 4;

the outer ring plane of the clamp spring 2 is tightly attached and clamped between the limiting table 22 and the locking piece 3, the connecting pipe 4 is tightly clamped through the clamp spring 2, and the clamping teeth are arranged on the inner ring, so that the clamped connecting pipe 4 can be further prevented from sliding;

the outer end of the locking piece 3 is also provided with a locking nut 31, and the locking piece 3 and the locking nut 31 are of an integral structure;

the locking nut 31 extends out of the connecting piece 1, and the locking piece 3 can be conveniently loosened and tightened through the locking nut 31, so that the locking depth of the opening of the locking piece 3 and the connecting piece 1 can be adjusted, and the locking degree of the clamp spring 2 can be conveniently adjusted;

two sealing rings 11 are clamped between the clamping step 12 and the inner end surface of the clamping base 21; each sealing ring 11 is in interference fit with the connecting pipe 4;

the diameter of the inner hole of the clamping step 12 is smaller than the outer diameter of the connecting pipe 4, so that the clamping step 12 can be propped against the connecting pipe 4 and also can be propped against the sealing ring 11, and the inner diameter of the sealing ring 11 is smaller than the diameter of the connecting pipe 4 in a normal state, and an interference fit is formed after the clamping step is sleeved.

In one embodiment of the utility model:

the embodiment of the utility model provides a pipeline plugging structure easy to assemble and disassemble, which solves the technical problems that: 1. at present, the traditional refrigeration pipelines are connected by welding generally, the welding tightness is strong, the temperature of the refrigerant in the refrigeration pipelines is changed greatly when the refrigerant is in work or not in work, shrinkage and expansion are easy to occur, the material used for the welding points is different from that of the refrigeration pipes, the refrigeration pipelines are copper pipes generally, the welding is performed to shrink and expand to different degrees, breakage or damage occurs, the tightness of the pipeline connection is poor, and therefore the shrinkage and expansion rate is calculated to cut the pipelines during welding; 2. the welding operation mode is inconvenient, the operation difficulty is high, the use environment is fire, when the pipeline needs to be operated in a non-fire environment, the welding mode cannot be used, the requirement on personnel is high, professional welding technicians are needed, and the requirement is severe; 3. the materials among the pipelines are different, the heat shrinkage degree is different during connection, the refrigerant in the refrigerating pipeline has larger temperature difference change, no shrinkage and expansion space is reserved, and the pipelines are damaged during connection; 4. at present, other connection modes are available, and the pipe can be conveniently inserted, but in general, the pipe connection modes are convenient to insert, and only can be removed in a violent manner when the pipe is removed, or the pipe is damaged, or the connector is damaged, so that the loss is caused, the pipe cannot be directly and repeatedly disassembled and assembled, the pipe is possibly sheared excessively, the length is shortened, normal assembly cannot be performed, and the quality of the pipe connection cannot be better.

The technical problems solved by the utility model are as follows: the convenient pipeline of mode that can lead to the cartridge is connected to can dismantle repeatedly, fault-tolerant rate is high, can also pass through the bending deformation of jump ring 2, makes to have certain deformation space between connecting piece 1 and the connecting pipe 4 of this device, effectively reduces the leakage that the pipeline contracts and expands and produce.

The technical effects are realized as follows: 1. the connecting pipe 4 is directly inserted into the clamping step 12 of the connecting piece 1, the limit is accurate, the connecting pipe 4 can be clamped through the clamp spring 2, the sliding and the separation of the connecting pipe 4 are prevented, the device is convenient to operate, the connecting pipe 4 only needs to be inserted into the inner hole of the locking piece 3 to be abutted against the clamping base 12 for connection, the insertion depth of the connecting pipe 4 can also be adjusted according to the requirement, welding is not used, the connecting pipe 4 and the connecting piece 1 can be conveniently assembled in a sealing way, the pressure bearing capacity is realized, the installation environment of the device and the requirements of personnel are reduced, the application range is wide, and the use is simple;

2. the device can separate the connecting pipe 4 from the connecting piece 1 through the knob locking piece 3 after the connecting piece is misplaced, so that the connecting pipe 4 can be reinstalled, the connecting pipe 4 can be repeatedly connected with the connecting piece 1, the fault tolerance rate is high, and the dismounting is convenient;

3. the connecting pipe 4 and the connecting piece 1 of this device are locked, through the reverse tooth chucking of jump ring 2, and sealed by means of a plurality of sealing washer 11 suit compression seal, make this device can also follow connecting pipe 4 cooperation elasticity change when connecting pipe 4 receives cold and hot change and take place to shrink and expand, can not only last with connecting pipe 4 chucking, also can come back and forth deformation cooperation connecting pipe 4's front and back flexible and pipe diameter swell through jump ring 2 and reduce, ensure sealed stable, can also cooperate the change that contracts and expand.

The technical scheme in the embodiment of the utility model aims to solve the problems, and the overall thought is as follows:

in order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

When the utility model is manufactured, a connecting piece 1, a clamp spring 2, a locking piece 3 and a connecting pipe 4 are required to be manufactured;

the connecting piece 1 is a circular straight pipe, a clamping step 12 is arranged in the upper end of the connecting piece 1, the aperture of the clamping step 12 is smaller than that of the connecting piece 1, and two sealing rings 11 are clamped between the clamping step 12 and the inner end surface of the clamping base 21; each sealing ring 11 is in interference fit with the connecting pipe 4; the diameter of the inner hole of the clamping step 12 is smaller than the outer diameter of the connecting pipe 4.

The outer wall of the lower end of the connecting piece 1 is convexly provided with an annular step, the lower end of the connecting piece 1 can be sleeved and welded at the lower end of the connecting piece 1 in a brazing mode, and the inner walls of the two ends of the connecting piece 1 can be alternatively provided with a clamping step 12, so that two different connecting pipes 4 are inserted and butted at the two ends of the connecting piece 1, as shown in fig. 6;

the locking cylinder 41 and the sealing sleeve 42 can be clamped with the other connecting pipe 4, the locking cylinder 41 and the sealing sleeve 42 can clamp and joint the other connecting pipe 4 stably, so that the two connecting pipes 4 can be effectively sealed and butted into an integral pipeline, and the integral pipeline can be brazed, can be subjected to sliding extrusion after being spliced or can be clamped and pressed, and the connecting mode of the locking cylinder 41 and the sealing sleeve 42 can refer to a clamping and pressing type ball valve for refrigeration with the application number of CN202022141518.0 or a sliding and pressing type ball valve for refrigeration with the application number of CN 202011021534.4; the other end of the connecting piece 1 of the device can be connected in various different ways, and the two ends of the connecting piece 1 of the device can also be connected in a sealing way by the plugging of the device, so long as the other end of the connecting piece 1 can be tightly plugged with a connecting pipe 4. When the welding is needed to be used in a tightly-welded and fixed environment, the traditional brazing type welding device can be selected for connecting pipelines in advance, then the sealing connection can be kept through the plugging of the welding device, and when the welding device is used in an environment without open fire, other clamping sealing modes can be selected for connection, so that the welding device is convenient to connect.

The locking piece 3 is a cylinder with threads arranged outside, and the locking piece 3 is detachably locked at the upper end of the connecting piece 1 through threads;

a sealing ring 11, a clamping base 21 and a clamping spring 2 are further arranged between the clamping step 12 and the locking piece 3, and the sealing ring 11, the clamping base 21, the clamping spring 2 and the locking piece 3 are sequentially arranged from inside to outside;

the inner wall of the locking piece 3 is also provided with an annular sealing groove 32, and the sealing groove 32 is also internally sleeved with a sealing ring 11; the upper end of the locking piece 3 is also provided with a locking nut 31, and the locking piece 3 and the locking nut 31 are of an integral structure; the lock nut 31 protrudes outside the connector 1.

The sealing ring 11, the clamping base 21, the clamping spring 2 and the locking piece 3 can be separated and sleeved and locked outside one connecting pipe 4;

the clamping spring 2 can be clamped on the outer wall of the connecting pipe 4 in a one-way non-return manner, the clamping spring 2 is clamped between the clamping base 21 and the locking piece 3 in an elastic pre-tightening manner, the clamping base 21 and the locking piece 3 are separated from each other through mutual knob separation, the whole clamping spring 2 can be restored to an open state due to self elastic force, the inner ring of the clamping spring 2 is separated from the connecting pipe 4 in a follow-up manner, so that the connecting pipe 4 is separated from the clamping spring 2, the outer ring of the clamping spring 2 is mutually attached to the inner side surface of the locking piece 3, the teeth of the inner ring of the clamping spring 2 obliquely extend forwards, the ruler of the inner ring obliquely extends inwards, when being clamped, the teeth of the clamping spring 2 are elastically deformed by clamping, the teeth of the inner ring of the clamping spring 2 can be clamped inwards, the connecting pipe 4 is clamped, the teeth of the clamping spring 2 still have inward clamping inclination, the connecting pipe 4 is effectively prevented from being outwards separated, the connecting pipe 4 can only inwards enter, the clamping step 12 cannot be outwards separated, and the diameter of the clamping step 12 is smaller than the diameter of the connecting pipe 4, and the connecting pipe 4 is tightly propped against.

The clamping spring 2 is a tooth-shaped clamping spring of a complete circular ring, a plurality of spike-shaped tooth-shaped structures are uniformly arranged on the edge of the inner ring of the clamping spring 2, and teeth of the inner ring of the clamping spring 2 extend forwards in an inclined manner; the outer ring of the clamp spring 2 is a ring on the same plane; the outer side surface of the clamping base 21 is also provided with a limiting table 21, the diameter of the limiting table 21 is smaller than the outer ring diameter of the clamp spring 2, and the diameter of the limiting table 21 is larger than the diameter of the connecting pipe 4; the outer ring plane of the clamp spring 2 is attached and clamped between the limiting table 21 and the locking piece 3.

The inner cavities of the sealing ring 11, the clamping base 21, the clamping spring 2 and the locking piece 3 are of cylindrical structures, so that the round tube can be clamped tightly, and sliding butt joint and sealing are facilitated.

The connecting piece 1 is made of brass, mainly is a sleeve joint of all accessories, and has bearing capacity;

the clamping base 21 is a plastic ring and is used for accurately positioning the position of the clamping spring 2 and is mainly clamped through the limiting table 22;

the O-shaped sealing ring 11 in the sealing groove 32 is used for preventing external air, moisture, a little corrosive gas in the outside and the like from entering the inside of the connecting piece 1, so that corrosion of internal fittings of the connecting piece 1 is avoided, and the service life is prolonged;

two O-shaped sealing rings 11 in the step 12 are clamped to perform a double sealing structure, so that the leakage of the refrigerant in the pipeline is prevented;

the locking member 3 has a plurality of functions: 1. installing the sealing ring 11 through the sealing groove 32; 2. the internal fittings can be locked and limited by the thread structure and can be locked with the threads of the connecting piece 1, so that the clamp springs 2 are prevented from falling off; 3. the retaining member 3 can be detached, the clamp spring 2 is loosened, the loosened clamp spring 2 can rebound and deform to be opened, so that the connecting pipe 4 and the clamp spring 2 are loosened, the effect of repeated use is achieved, the connecting pipe 4 can be repeatedly assembled with the connecting piece 1, and the connecting pipe 4 is conveniently adjusted.

The inner ring of the clamp spring 2 is in a barb shape, and the connecting pipe 4 can be smoothly inserted into the hole of the connecting piece 1 from the forward direction, namely from the outside to the inside, so that the assembly is easily completed; the reverse is because the tooth of jump ring 2 inner ring becomes barb form, and the tooth of spike inserts connecting pipe 4, makes connecting pipe 4 unable outside slip break away from, and jump ring 2's theory of operation is through external force oppression, opens or locking makes jump ring 2 take place elastic deformation, when withdrawing the power of opening or locking, jump ring 2 can produce one kind and tend to resume the rebound of initial state to realize the fixed of assembly part.

When the clamping device is used, the two sealing rings 11 are pressed and sleeved in the clamping step 12, then the clamping base 21 is placed, the sealing rings 11 are flattened, the sealing rings 11 are limited, then the clamping springs 2 are assembled in the limiting table 22 at the outer end of the clamping base 21, the inner ring faces of the clamping springs 2 are obliquely convex towards the inner end, the inner ring faces are anti-skid spike teeth, the annular diameter surrounded by the inner ring teeth of the clamping springs 2 is smaller than the aperture of the limiting table 22, then the locking piece 3 is butted on the outer port of the connecting piece 1, the inner end of the locking piece 3 clamps the outer ring plane of the clamping springs 2 with the limiting table 22, and the locking nut 31 at the outer end of the locking piece 3 is exposed to the outside, so that the tightness of a knob is convenient to adjust.

A smaller sealing ring 11 is arranged in the sealing groove 32, so that the tightness is improved.

Then insert connecting pipe 4 from outside to inside along the hole of retaining member 3, pass retaining member 3, jump ring 2, clamping base 21 and sealing washer 11 in proper order to dock in the clamping step 12 of connecting piece 1 can, according to the demand that contracts and expands, the adjustment inserts the degree of depth, inserts the deepest just connecting pipe 4 and supports with clamping step 12 and lean on, the department of outmost, also inserts connecting pipe 4 inside connecting piece 1 to connecting pipe 4 need with sealing washer 11 suit closely, ensure sealed can.

When the connecting pipe is to be disassembled, the space between the locking piece 3 and the connecting piece 1 is rotated and loosened by the spanner and the knob lock nut 31, so that the clamp spring 2 is rebounded and opened, the teeth of the inner ring of the clamp spring 2 are used for loosening the connecting pipe 4, then the connecting pipe 4 can be outwards drawn, the adjustment of the connecting pipe 4 can be completed, when the locking nut 31 is screwed when the connecting pipe is required to be locked again, then the connecting pipe 4 can be clamped again by the clamp spring 2, and a certain elastic abdication space can be provided due to the elastic effect of the clamp spring 2.

The inner end of the device is directed to the side of the connecting piece 1 towards the centre, i.e. the direction of insertion of the connecting tube 4 into the connecting tube 4, and the outer end is directed to the direction of extraction.

In addition, in the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. are presented, the indicated orientation or positional relationship is based on that shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.

Claims (4)

1. The utility model provides an easy dismouting pipeline grafting structure which characterized in that includes: the connecting piece (1), the clamp spring (2), the locking piece (3) and the connecting pipe (4);

the connecting piece (1) is a circular straight pipe with two open ends, a clamping step (12) is arranged in one end of the connecting piece (1), and the aperture of the clamping step (12) is smaller than that of the connecting piece (1);

the locking piece (3) is a cylinder with threads arranged outside, and the locking piece (3) is detachably locked at the outer end of the connecting piece (1) through the threads;

a sealing ring (11), a clamping base (21) and a clamp spring (2) are further arranged between the clamping step (12) and the locking piece (3), and the sealing ring (11), the clamping base (21), the clamp spring (2) and the locking piece (3) are sequentially arranged from inside to outside;

the inner wall of the locking piece (3) is also provided with an annular sealing groove (32), and a sealing ring (11) is sleeved in the sealing groove (32);

the sealing ring (11), the clamping base (21), the clamp spring (2) and the locking piece (3) can be separated in a sleeved mode and locked outside the connecting pipe (4);

the clamp spring (2) can be clamped on the outer wall of the connecting pipe (4) in a one-way non-return manner, and the clamp spring (2) can be clamped between the clamping base (21) and the locking piece (3) in a separated manner.

2. The easy-to-disassemble pipeline plugging structure according to claim 1, wherein: the clamping spring (2) is a tooth-shaped clamping spring of a complete circular ring, a plurality of spike-shaped tooth-shaped structures are uniformly arranged on the edge of the inner ring of the clamping spring (2), and teeth of the inner ring of the clamping spring (2) extend forwards in an inclined mode;

the outer ring of the clamp spring (2) is a ring on the same plane;

the outer side surface of the clamping base (21) is also provided with a limiting table (22), the diameter of the limiting table (22) is smaller than the outer ring diameter of the clamp spring (2), and the diameter of the limiting table (22) is larger than the diameter of the connecting pipe (4);

the outer ring plane of the clamp spring (2) is attached and clamped between the limiting table (22) and the locking piece (3).

3. The easy-to-disassemble pipeline plugging structure according to claim 1, wherein: the outer end of the locking piece (3) is also provided with a locking nut (31), and the locking piece (3) and the locking nut (31) are of an integral structure;

the locking nut (31) extends out of the connecting piece (1).

4. The easy-to-disassemble pipeline plugging structure according to claim 1, wherein: two sealing rings (11) are clamped between the clamping step (12) and the inner end surface of the clamping base (21); each sealing ring (11) is in interference fit with the connecting pipe (4);

the diameter of the inner hole of the clamping step (12) is smaller than the outer diameter of the connecting pipe (4).