CN221013124U - Dust collecting pipeline connector - Google Patents

Abstract

The dust collecting pipeline connector comprises a connecting pipeline and pipeline connectors arranged at two ends of the connecting pipeline, wherein the connecting pipeline comprises a male connector pipe and a female connector pipe which is arranged at one end of the male connector pipe and is connected with the male connector pipe through a detachable structure, and the male connector pipe can rotate relative to the female connector pipe; the detachable structure comprises a chuck with one end rotatably connected to the outer side of the male joint pipe, a limiting groove formed in the outer side of the male joint pipe, a limiting part capable of limiting the limiting groove when being movably mounted on the chuck inwards, a chuck sleeve slidably mounted on the outer side of the chuck and capable of limiting the limiting part in the limiting groove in a pressing mode, and a quick clamping sleeve slidably mounted on the outer side of the chuck and capable of driving the chuck sleeve to be separated from the limiting part, wherein the other end of the chuck is connected with the female joint pipe.

Description

Dust collecting pipeline connector

Technical Field

The utility model relates to the technical field of pipeline connection, in particular to a dust collecting pipeline connector.

Background

Vacuum cleaners of various brands on the market now provide 1 female connector and 2-4 male connector connectors, and the complimentary connector cannot be mated with the various dust collection connectors of the power tools on the market, requiring additional searching for a mating dust collection adapter.

The existing dust collecting connector on the market is basically a connector butt joint locking structure, when a user uses the dust collecting connector, the dust collecting connector cannot rotate at random, the connecting connector cannot be quickly detached and replaced, and the user cannot operate the electric tool at random, so that the electric tool is inconvenient to operate after being connected with the vacuum cleaner through the connector.

Disclosure of Invention

The utility model is to solve the problems in the prior art, and provide a dust collecting pipeline connector which can be used for quickly connecting pipelines and freely rotating the connecting position, so that an electric tool can be freely operated, and the operation is convenient.

The utility model solves the technical problems by adopting the technical scheme that: the dust collecting pipeline connector comprises a connecting pipeline and pipeline connectors arranged at two ends of the connecting pipeline, wherein the connecting pipeline comprises a male connector pipe and a female connector pipe which is arranged at one end of the male connector pipe and is connected with the male connector pipe through a detachable structure, and the male connector pipe can rotate relative to the female connector pipe;

The detachable structure comprises a chuck with one end rotatably connected to the outer side of the male joint pipe, a limiting groove formed in the outer side of the male joint pipe, a limiting part capable of limiting the limiting groove when being movably mounted on the chuck inwards, a chuck sleeve slidably mounted on the outer side of the chuck and capable of limiting the limiting part in the limiting groove in a pressing mode, and a quick clamping sleeve slidably mounted on the outer side of the chuck and capable of driving the chuck sleeve to be separated from the limiting part, wherein the other end of the chuck is connected with the female joint pipe.

Preferably, a limiting elastic piece pushing the chuck sleeve to one side of the limiting part is arranged on the outer side of the chuck, and a limiting table which is opposite to the pushing force of the limiting elastic piece and used for positioning the position of the chuck sleeve is arranged on the chuck.

Preferably, a sealing pipe fitting positioned in the chuck is arranged between the male joint pipe and the female joint pipe, one end of the sealing pipe fitting is movably sealed with the female joint pipe, and a sealing elastic piece which presses and seals the opposite end of the sealing pipe fitting on the male joint pipe is arranged on the sealing pipe fitting.

Preferably, the pipeline connecting joint comprises a locking joint arranged on the connecting pipeline, a plurality of elastic clamping jaws arranged on the outer side end face of the locking joint, a rubber sleeve arranged on the locking joint and positioned in the elastic clamping jaws, and a locking nut sleeved on the outer side of the elastic clamping jaws and detachably connected to the locking joint, wherein the inner concave part of the outer end of the locking nut is used for pressing the elastic clamping jaws on the outer surface of the rubber sleeve.

Preferably, the pipeline connecting joint comprises a fixed sleeve arranged on the connecting pipeline and a clamping sleeve spliced and fixed in the fixed sleeve, an elastic clamping part which is arranged in an inward extending manner is arranged on the inner side of the clamping sleeve, and an elastic mounting hole is formed in the center of the inner side of the clamping part.

Preferably, the sealing tube comprises a movable sleeve movably mounted in the female joint tube, an inner bushing in contact with the male joint tube for sealing, and a rubber gasket for sealing the inner bushing to the movable sleeve.

Preferably, the inner side of the inner bushing is provided with a step surface for limiting the axial movement of the rubber gasket, the outer end surface of the rubber gasket is in contact sealing with the inner wall of the inner bushing of the movable sleeve, the outer end surface of the movable sleeve is provided with a protruding part which surrounds the movable sleeve and extends towards the rubber gasket, and the rubber gasket is provided with a contact sealing groove which is arranged corresponding to the protruding part

Preferably, the outer wall of the movable sleeve is provided with a mounting groove which is arranged around the movable sleeve in a circle, and a sealing ring which is arranged in extrusion contact with the inner wall of the female joint pipe is arranged in the mounting groove.

Preferably, the inner side of the female joint pipe is provided with an extrusion groove which is arranged around the outer side end surface of the movable sleeve, an extrusion sealing ring is arranged in the extrusion groove, and an extrusion part which is in extrusion contact with the extrusion sealing ring is arranged on the outer side end surface of the movable sleeve.

Preferably, the outer side of the female joint pipe is provided with a limit installation part for limiting and installing one end of the seal elastic piece, and the movable sleeve is provided with a flange part for limiting and installing the other end of the seal elastic piece.

The beneficial effects of the utility model are as follows: according to the utility model, the male joint pipe and the female joint pipe of the connecting pipelines can be rapidly disassembled and replaced through the detachable structure, and meanwhile, the male joint pipe and the female joint pipe can be relatively and freely rotated, so that the electric tool can be freely operated, the pipelines connected through the pipeline connectors are prevented from being mutually wound, and the operation is more convenient and free.

Drawings

FIG. 1 is a schematic view of a pipeline connector with locking and fixing structures at two ends;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 2;

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

FIG. 5 is an exploded view of the present utility model;

FIG. 6 is a schematic view of the structure of the pipeline connector with one end adopting the locking and fixing structure and the other end adopting the clamping and fixing structure;

FIG. 7 is a schematic view of a pipeline connector with a locking and fixing structure;

FIG. 8 is a schematic view of a pipe joint with a clamping and fixing structure;

fig. 9 is a cross-sectional view of a pipe joint of a clamp-on securing structure.

Reference numerals illustrate: 1. connecting pipeline, 2, pipeline connector, 1-1, male connector pipe, 1-2, female connector pipe, 3, chuck, 4, limit groove, 5, limit part, 6, chuck sleeve, 7, quick-acting sleeve, 8, limit elastic piece, 9, limit table, 10, sealing pipe fitting, 11, sealing elastic piece, 2-1-1, locking connector, 2-1-2, elastic clamping jaw, 2-1-3, rubber sleeve, 2-1-4, locking nut, 2-2-1, fixed sleeve, 2-2-2, clamping sleeve, 2-2-3, elastic clamping part, 2-2-4, elastic mounting hole, 10-1, movable sleeve, 10-2, inner sleeve, 10-3, rubber gasket, 12, step surface, 13, protruding part, 14, contact seal groove, 15, mounting groove, 16, sealing ring, 17, extrusion groove, 18, extrusion sealing ring, 19, extrusion part, 20, limit mounting part, 21, flange part, 22, movable hole, 23, connecting part, 24, inner recess, 25, anti-falling off groove, 26, anti-falling off protruding part, and conical surface.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

referring to fig. 1, it is shown that: the embodiment discloses a dust collecting pipeline connector, which comprises a connecting pipeline 1 and pipeline connectors 2 arranged at two ends of the connecting pipeline; when the connecting pipeline 1 is used, one end of the connecting pipeline is connected with a dust collection pipe of the vacuum cleaner through the pipeline connector 2, and the other end of the connecting pipeline is connected with a dust collection port of the electric tool through the pipeline connector 2, so that the electric tool is connected with the vacuum cleaner;

As shown in fig. 1 and 7, the pipe connection joint 2 in this embodiment may be a locking and fixing structure, specifically, the pipe connection joint 2 includes a locking joint 2-1-1 provided on the connecting pipe 1, a plurality of elastic clamping jaws 2-1-2 provided on the outer end surface of the locking joint 2-1-1, a rubber sleeve 2-1-3 installed on the locking joint 2-1-1 and located in the elastic clamping jaws 2-1-2, and a locking nut 2-1-4 sleeved outside the elastic clamping jaws 2-1-2 and detachably connected to the locking joint 2-1-1, the outer end of the locking nut 2-1-4 is concavely provided with an inner concave portion 24 for pressing the elastic clamping jaws 2-1-2 on the outer surface of the rubber sleeve 2-1-3, specifically, the locking nut 2-1-4 is detachably installed outside the locking joint 2-1-1 through threads, as shown in fig. 2, the locking joint 2-1 is internally provided with a clamping groove for installing the rubber sleeve 2-1-3, and the rubber sleeve 2-1-3 is fixedly installed in the clamping groove; when the pipeline connecting device is used, a pipeline to be connected is sleeved between the rubber sleeve 2-1-3 and the elastic clamping jaw 2-1-2, then the locking nut 2-1-4 is installed on the outer side of the locking joint 2-1-1 through threads, the elastic clamping jaw 2-1-2 is pressed inwards on the outer side of the pipeline through the concave part 24, the pipeline is clamped and installed between the elastic clamping jaw 2-1-2 and the rubber sleeve 2-1-3, meanwhile, the rubber sleeve 2-1-3 is flexibly deformable, the elastic clamping jaw 2-1-2 is made of a flexible deformable material, and pipelines with different specifications can be quickly connected through the pipeline connecting joint 2, so that the practicability of the pipeline connecting joint 2 is better.

Meanwhile, as shown in fig. 6 and 8, the pipeline connecting joint 2 may also adopt a clamping and fixing structure, specifically, the pipeline connecting joint 2 in this embodiment includes a fixing sleeve 2-2-1 disposed on the connecting pipeline 1 and a clamping sleeve 2-2 inserted and fixed in the fixing sleeve 2-2-1, an elastic clamping portion 2-2-3 extending inward is disposed inside the clamping sleeve 2-2, and an elastic mounting hole 2-2-4 is disposed at a central position inside the clamping portion 2-2-3; the clamping sleeve 2-2-2 can be made of elastic materials, in order to ensure that the clamping sleeve 2-2-2 is firmly connected with the fixing sleeve 2-2-1, the outer surface of the clamping sleeve 2-2 is in interference fit with the inner surface of the fixing sleeve 2-2-1, a plurality of anti-falling grooves 25 are formed in the outer surface of the clamping sleeve 2-2 at intervals, a plurality of anti-falling protrusions 26 which are arranged around the inner surface of the fixing sleeve 2-2-1 are formed in the inner surface of the fixing sleeve 2-1, and then the anti-falling grooves 25 are clamped through the anti-falling protrusions 26 during installation, so that the clamping sleeve 2-2-2 is prevented from falling out of the fixing sleeve 2-2-1; meanwhile, an elastic clamping part 2-2-3 is arranged on the inner surface of the clamping sleeve 2-2, and the elastic clamping part 2-2-3 is arranged around the inner surface of the clamping sleeve 2-2 in a circle; further, as shown in fig. 9, in order to facilitate the insertion of the pipeline, the elastic clamping portion 2-2-3 may be gradually inclined from the outside to the left side (i.e. inclined to the side far away from the insertion end), when in use, the diameter of the connecting pipeline needs to be larger than that of the elastic mounting hole 2-2-4, and only the pipeline to be connected needs to be inserted into the elastic mounting hole 2-2-4, and the pipeline can be clamped by the elastic mounting hole 2-2-4, and meanwhile, the pipelines with different specifications can be quickly connected through the pipeline connecting joint 2 only by slightly larger outer diameters than that of the elastic mounting hole 2-2-4, so that the practicability of the pipeline connecting joint 2 is better; correspondingly, one end of the connecting pipeline 1 can be a locking and fixing structure, the other end of the connecting pipeline 1 is a clamping and fixing structure, and the two ends of the connecting pipeline 1 can also be the locking and fixing structure or the clamping and fixing structure.

Further, in order to facilitate quick connection and disconnection of the connection pipeline 1, the connection pipeline 1 in the embodiment includes a male connector pipe 1-1 and a female connector pipe 1-2 disposed at one end of the male connector pipe 1-1 and connected to the male connector pipe 1-1 by a detachable structure; when the vacuum cleaner is used, one end of the male connector pipe 1-1 and one end of the female connector pipe 1-2 are detachably connected with each other, the other end of the male connector pipe 1-1 is connected with the electric tool or the vacuum cleaner through the pipeline connector 2, the other end of the female connector pipe 1-2 is connected with the vacuum cleaner or the electric tool through the pipeline connector 2, when a plurality of electric tools are needed to be used in sequence, the male connector pipe 1-1 is connected to dust outlets of different electric tools, the female connector pipe 1-2 is connected to a dust collection pipe of the vacuum cleaner, and the electric tool connected to the dust collection pipe of the vacuum cleaner can be rapidly detached and replaced through a detachable structure.

Further, since the electric tool is generally required to be moved or used in an angle adjustment according to the use environment or the change of the use angle when in use; in order to avoid the dust collection pipe from rotating when the electric tool is used, so that the dust collection pipe is wound, the male joint pipe 1-1 in the embodiment can rotate relative to the female joint pipe 1-2;

Further, as shown in fig. 2-5, the detachable structure in this embodiment includes a chuck 3 with one end rotatably connected to the outer side of the male connector tube 1-1, a limit groove 4 provided on the outer side of the male connector tube 1-1, a limit portion 5 movably mounted on the chuck 3 and capable of limiting the limit groove 4 when moving inwards, a chuck cap 6 slidably mounted on the outer side of the chuck 3 and capable of limiting the limit portion 5 in the limit groove 4 by pressing, and a quick-action jacket 7 slidably mounted on the outer side of the chuck 3 and capable of driving the chuck cap 6 to be separated from the limit portion 5; through the detachable structure, not only can the detachable connection of the male joint pipe 1-1 and the female joint pipe 1-2 be realized, but also the male joint pipe 1-1 and the female joint pipe 1-2 can relatively and freely rotate after being connected; specifically, as shown in fig. 2 and 5, the limiting part 5 in the embodiment is of a steel ball structure, the chuck 3 is provided with a plurality of movable holes 22 positioned at the outer side of the limiting groove 4, the limiting part 5 corresponding to the steel ball structure is movably installed in the movable holes 22, meanwhile, in order to prevent the limiting part 5 of the steel ball structure from moving out inwards, in the embodiment, a narrow shrinkage mouth smaller than the diameter of the steel ball is designed at the bottom of the inner side of the movable holes 22, so that part of the steel ball can penetrate out of the movable holes 22 and be positioned in the limiting groove 4, and meanwhile, the steel ball can be prevented from separating from the inner end of the movable holes 22; when the male joint pipe 1-1 is required to be installed and fixed, the chuck sleeve 6 moves to the outer side of the movable hole 22, so that the limiting part 5 of the steel ball structure in the movable hole 22 is limited from being pulled out outwards, and meanwhile, the inner end of the limiting part 5 of the steel ball structure is clamped in the limiting groove 4 to limit the male joint pipe 1-1, so that the male joint pipe 1-1 is connected; the opposite end of the chuck 3 is connected with the female joint pipe 1-2; preferably, the female joint pipe 1-2 in the embodiment is detachably connected with the chuck 3 through threads; specifically, as shown in fig. 2, the outer side of the opposite end of the collet 3 is provided with external threads, the outer side of the female joint pipe 1-2 is provided with a connecting portion 23 extending to the outer side of the collet 3, the inner side of the connecting portion 23 is provided with internal threads, and the female joint pipe 1-2 is detachably connected with the collet 3 through the corresponding connecting portion 23.

Further, in order to avoid the separation of the collet sleeve 6 from the collet 3 outside the limiting part 5 and ensure the connection stability of the detachable structure, in this embodiment, a limiting elastic member 8 pushing the collet sleeve 6 to one side of the limiting part 5 is installed outside the collet 3, and a limiting table 9 opposite to the pushing force of the limiting elastic member 8 and used for positioning the collet sleeve 6 is arranged on the collet 3; specifically, as shown in fig. 2 and 3, in this embodiment, the limiting elastic member 8 is a compression spring, when in installation, one end of the compression spring is limited on the outer end face of the connecting portion 23, the other end of the compression spring is limited on the outer end face of the collet sleeve 6, and then the collet sleeve 6 is pushed to a side close to the limiting portion 5 under the action of the compression spring, the corresponding limiting table 9 is arranged at a position corresponding to the compression spring on the collet 3, when the collet sleeve 6 is pushed by the compression spring to move to a position contacting with the limiting table 9 for limiting, at this time, the position of the collet sleeve 6 just outside the movable hole 22 (i.e. the limiting portion 5) limits the limiting portion 5 to move outwards, so that the movement of the collet sleeve 6 can be avoided when in use, and the connection stability of the detachable structure is ensured;

Correspondingly, as shown in fig. 2 and 5, the quick clamping sleeve 7 is slidably connected to the outer side of the chuck 3, a stepped surface for limiting the movement of the chuck sleeve 6 to the side far away from the limiting elastic piece 8 is arranged on the inner side surface of the quick clamping sleeve 7, when the male joint pipe 1-1 needs to be disassembled, the quick clamping sleeve 7 is pulled by hand to move to the side of the limiting elastic piece 8, so that the chuck sleeve 6 overcomes the elastic force of the limiting elastic piece 8 under the action of the stepped surface and is separated from the outer side of the movable hole 22 to move to the side of the limiting elastic piece 8, and further, the limiting part 5 is free from limiting in the radial direction, so that the limiting part 5 on the limiting groove 4 can freely move inwards and outwards when the male joint pipe 1-1 is pulled out, and further, the male joint pipe 1-1 cannot be limited, and the male joint pipe 1-1 can be pulled out easily; in order to enable the quick clamping sleeve 7 to drive the clamping sleeve 6 to move, the clamping sleeve 6 can be fixedly connected to the inner side of the quick clamping sleeve 7 or the clamping sleeve 6 is installed in the quick clamping sleeve 7 in an interference fit mode.

Further, in order to ensure the sealing dustproof property of the male joint pipe 1-1 and the female joint pipe 1-2 after the connection of the detachable structure, in this embodiment, a sealing pipe fitting 10 positioned in the chuck 3 is arranged between the male joint pipe 1-1 and the female joint pipe 1-2, one end of the sealing pipe fitting 10 is movably sealed with the female joint pipe 1-2, and a sealing elastic piece 11 for pressing and sealing the opposite end of the sealing pipe fitting 10 on the male joint pipe 1-1 is arranged on the sealing pipe fitting 10, so that the male joint pipe 1-1 and the female joint pipe 1-2 are in contact sealing through the sealing pipe fitting 10, and dust leakage is avoided;

As shown in fig. 3, the sealing pipe fitting 10 in this embodiment includes a movable sleeve 10-1 movably mounted in a female joint pipe 1-2, an inner liner 10-2 in contact sealing with the male joint pipe 1-1, and a rubber gasket 10-3 in sealing connection with the inner liner 10-2 and the movable sleeve 10-1, wherein a step surface 12 for limiting axial movement of the rubber gasket 10-3 is formed on the inner side of the inner liner 10-2, the outer end surface of the rubber gasket 10-3 is in contact sealing with the inner wall of the movable sleeve inner liner 10-2, a protruding portion 13 which surrounds the movable sleeve 10-1 for one week and extends toward the rubber gasket 10-3 is formed on the outer end surface of the movable sleeve 10-1, and a contact sealing groove 14 which is arranged corresponding to the protruding portion 13 is formed on the rubber gasket 10-3; in the embodiment, the movable sleeve 10-1 and the movable sleeve 10-2 are respectively connected in a sealing way through the rubber gasket 10-3, and the movable sleeve 10-2 and the movable sleeve 10-1 in the embodiment can be of a sleeve structure with a cavity in the center;

Specifically, as shown in fig. 3, the outer side of the female joint pipe 1-2 in this embodiment is provided with a limiting installation portion 20 protruding outwards and used for limiting and installing one end of the sealing elastic element 11, and a corresponding connection portion 23 is located on the outermost plane of the limiting installation portion 20, where the limiting installation portion 20 and the connection portion 23 can be integrally arranged with the female joint pipe 1-2, and the movable sleeve 10-1 is provided with a flange portion 21 used for limiting and installing the opposite end of the sealing elastic element 11; in order to realize movable sealing of the movable sleeve 10-1 and the female joint pipe 1-2, an installation groove 15 which is arranged around the movable sleeve 10-1 for a circle is formed in the outer wall of the movable sleeve 10-1, and a sealing ring 16 which is arranged in an extrusion contact manner with the inner wall of the female joint pipe 1-2 is installed in the installation groove 15, so that when the movable sleeve 10-1 moves axially, the sealing ring 16 on the outer side of the movable sleeve 10-1 is in contact sealing with the inner wall of the female joint pipe 1-2; the sealing elastic piece 11 in the embodiment is a compression spring arranged on the outer side of the female joint pipe 1-2, one end of the compression spring is limited on the outer side of the limiting installation part 20, the other end of the compression spring is limited on the outer side of the flange part 21, when the sealing elastic piece is used, the movable sleeve provided with the flange part 21 is pushed to one side of the rubber gasket 10-3 through the elasticity of the compression spring, and then the inner lining 10-2 is pressed on the outer surface of the male joint pipe 1-1 through the rubber gasket 10-3 to realize contact sealing; further, in order to increase the contact surface between the inner liner 10-2 and the male pipe 1-1, the outer surface of the contact portion of the male pipe 1-1 may be designed as a tapered surface 27, as shown in fig. 2, which is gradually inclined downward from the outside to the inside, and the contact surface of the inner liner 10-2 is also provided corresponding to the tapered surface.

Further, as shown in fig. 4, in order to further increase the tightness between the movable sleeve 10-1 and the female joint pipe 1-2 during connection and use, in this embodiment, an extrusion groove 17 surrounding the outer end face of the movable sleeve 10-1 is formed in the inner side of the female joint pipe 1-2, an extrusion sealing ring 18 is disposed in the extrusion groove 17, an extrusion part 19 disposed in extrusion contact with the extrusion sealing ring 18 is disposed on the outer end face of the movable sleeve 10-1, after connection is completed, the inner sleeve 10-2 is pressed and contacted with the outer side of the male joint pipe 1-1, and at this time, the extrusion part 19 on the movable sleeve 10-1 is also contacted with the extrusion sealing ring 18 mounted in the extrusion groove 17, so that the sealing connection between the end of the movable sleeve 10-1 and the female joint pipe 1-2 is further realized through the extrusion sealing ring 18.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.

Claims (10)

1. The utility model provides a dust collection pipeline connector, includes connecting line (1) and sets up pipeline connector (2) at connecting line both ends, characterized by: the connecting pipeline (1) comprises a male connector pipe (1-1) and a female connector pipe (1-2) which is arranged at one end of the male connector pipe (1-1) and connected with the male connector pipe (1-1) through a detachable structure, wherein the male connector pipe (1-1) can rotate relative to the female connector pipe (1-2);

The detachable structure comprises a chuck (3) with one end rotatably connected to the outer side of a male joint pipe (1-1), a limiting groove (4) formed in the outer side of the male joint pipe (1-1), a limiting part (5) capable of limiting the limiting groove (4) when being movably mounted on the chuck (3) inwards, a chuck sleeve (6) which is slidably mounted on the outer side of the chuck (3) and used for limiting the limiting part (5) in the limiting groove (4) in a pressing mode, and a quick clamping sleeve (7) which is slidably mounted on the outer side of the chuck (3) and used for driving the chuck sleeve (6) to be separated from the limiting part (5) in a setting mode, wherein the opposite other end of the chuck (3) is connected with a female joint pipe (1-2).

2. A dust collection line connector as set forth in claim 1, wherein: the clamping head is characterized in that a limiting elastic piece (8) pushing the clamping head sleeve (6) to one side of the limiting part (5) is arranged on the outer side of the clamping head (3), and a limiting table (9) which is opposite to the pushing force of the limiting elastic piece (8) and used for positioning the position of the clamping head sleeve (6) is arranged on the clamping head (3).

3. A dust collection line connector as set forth in claim 1, wherein: a sealing pipe fitting (10) positioned in the chuck (3) is arranged between the male joint pipe (1-1) and the female joint pipe (1-2), one end of the sealing pipe fitting (10) is movably sealed with the female joint pipe (1-2), and a sealing elastic piece (11) for pressing and sealing the opposite end of the sealing pipe fitting (10) on the male joint pipe (1-1) is arranged on the sealing pipe fitting (10).

4. A dust collection line connector as set forth in claim 1, wherein: the pipeline connecting joint (2) comprises a locking joint (2-1-1) arranged on the connecting pipeline (1), a plurality of elastic clamping jaws (2-1-2) arranged on the outer side end face of the locking joint (2-1-1), a rubber sleeve (2-1-3) arranged on the locking joint (2-1-1) and positioned in the elastic clamping jaws (2-1-2), and a locking nut (2-1-4) sleeved on the outer side of the elastic clamping jaws (2-1-2) and detachably connected to the locking joint (2-1-1), wherein the inner concave portion (24) used for pressing the elastic clamping jaws (2-1-2) on the outer surface of the rubber sleeve (2-1-3) is arranged at the outer end of the locking nut (2-1-4) in a concave mode.

5. A dust collection line connector as set forth in claim 1, wherein: the pipeline connecting joint (2) comprises a fixed sleeve (2-2-1) arranged on the connecting pipeline (1) and a clamping sleeve (2-2-2) fixed in the fixed sleeve (2-2-1) in a plugging manner, an elastic clamping part (2-2-3) extending inwards is arranged on the inner side of the clamping sleeve (2-2-2), and an elastic mounting hole (2-2-4) is formed in the center position of the inner side of the clamping part (2-2-3).

6. A dust collection line connector as set forth in claim 3, wherein: the sealing pipe fitting (10) comprises a movable sleeve (10-1) movably arranged in the female joint pipe (1-2), an inner bushing (10-2) in contact sealing with the male joint pipe (1-1), and a rubber gasket (10-3) in sealing connection with the inner bushing (10-2) and the movable sleeve (10-1).

7. A dust collection line connector as set forth in claim 6, wherein: the inner side of the inner bushing (10-2) is provided with a step surface (12) for limiting the axial movement of the rubber gasket (10-3), the outer end surface of the rubber gasket (10-3) is in contact seal with the inner wall of the inner bushing (10-2), the outer end surface of the movable sleeve (10-1) is provided with a protruding part (13) which surrounds the movable sleeve (10-1) for a circle and extends to the rubber gasket (10-3), and the rubber gasket (10-3) is provided with a contact seal groove (14) which is arranged corresponding to the protruding part (13).

8. A dust collecting line connector as claimed in claim 6 or 7, characterized in that: the outer wall of the movable sleeve (10-1) is provided with a mounting groove (15) which is arranged around the movable sleeve (10-1) in a circle, and a sealing ring (16) which is arranged in extrusion contact with the inner wall of the female joint pipe (1-2) is arranged in the mounting groove (15).

9. A dust collection line connector as set forth in claim 8, wherein: the female joint pipe (1-2) is internally provided with an extrusion groove (17) which is arranged around the outer side end face of the movable sleeve (10-1), an extrusion sealing ring (18) is arranged in the extrusion groove (17), and an extrusion part (19) which is in extrusion contact with the extrusion sealing ring (18) is arranged on the outer side end face of the movable sleeve (10-1).

10. A dust collection line connector as set forth in claim 6, wherein: the outer side of the female joint pipe (1-2) is provided with a limiting installation part (20) for limiting and installing one end of the sealing elastic piece (11), and the movable sleeve (10-1) is provided with a flange part (21) for limiting and installing the other end of the sealing elastic piece (11).