CN113154151B

CN113154151B - Pipeline connecting structure for municipal water supply and drainage

Info

Publication number: CN113154151B
Application number: CN202110267329.4A
Authority: CN
Inventors: 张倩倩
Original assignee: Jiangsu Jiuju Construction Engineering Co ltd
Current assignee: Jiangsu Jiuju Construction Engineering Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2022-03-18
Anticipated expiration: 2041-03-11
Also published as: CN113154151A

Abstract

The utility model relates to a pipeline connection structure for municipal administration water supply and drainage, the field of municipal works facility is related to, it includes the first connecting seat of fixed connection on pipeline one, the second connecting seat of fixed connection on pipeline two, the grafting pipe that fixedly connected with link up with pipeline one on the first connecting seat, fixedly connected with and the second pipe that link up of pipeline two on the second connecting seat, annular inserting groove has been seted up on the mouth of pipe terminal surface of grafting pipe one, grafting pipe two and annular inserting groove slip grafting, be provided with the filling device who fills space between grafting pipe two and the annular inserting groove inner tank wall on the grafting pipe two, be provided with the fixing device who is used for making first connecting seat and second connecting seat be connected fixedly on first connecting seat and the second connecting seat. This application has the pipeline maintenance frequency that can improve and lead to because of the bolt corrosion, reduces the effect of the consumption of manpower, energy.

Description

Pipeline connecting structure for municipal water supply and drainage

Technical Field

The application relates to the field of municipal engineering facilities, in particular to a pipeline connecting structure for municipal water supply and drainage.

Background

In China, municipal facilities refer to various buildings, structures and equipment which are arranged in the planning and construction range of urban areas and towns and provide paid or unpaid public products and services for residents based on government responsibilities and obligations, and various public infrastructure constructions matched with urban life belong to the municipal engineering category, such as common urban roads, bridges and subways, and various pipelines closely related to life.

Referring to fig. 1, in the related art, municipal sewage pipes are generally connected by respectively providing a flange 32 at the end of two pipes, the two pipes are respectively called a first pipe 34 and a second pipe 35, a rubber ring 33 is provided between the two flanges 32, after the two flanges 32 are butted, the two flanges 32 are butted against each other, then bolts are inserted into positioning holes annularly formed at the side of the flanges 32, and the bolts are locked by nuts, so that the flanges 32 press the rubber ring 33, and the first pipes 34 are butted tightly with the second pipes 35.

In view of the above related technologies, the inventor considers that the first pipeline and the second pipeline are only fixed by bolts, the connection structure between the first pipeline and the second pipeline is single, along with the extension of the burying time of the pipelines, the corrosion speed of the bolts is easily accelerated in the underground humid environment where the pipelines are located, after the bolts are corroded continuously, along with the continuous flowing of water flow in the pipelines, a force for promoting the relative movement of the connection parts of the two pipelines can be generated, due to the fact that the fastening capacity of the bolts is reduced due to corrosion, the attaching degree of flanges between the two pipelines is reduced, the tightness of the pipeline connection is affected, the frequency of pipeline maintenance is increased, and therefore the consumption of manpower and energy is increased.

Disclosure of Invention

In order to improve the pipeline maintenance frequency that leads to because of the bolt corrosion, reduce the consumption of manpower, energy, this application provides a pipeline connection structure for municipal administration water supply and drainage.

The application provides a pipeline connection structure for municipal administration water supply and drainage adopts following technical scheme:

the utility model provides a pipeline connection structure for municipal administration water supply and drainage, includes first connecting seat, the second connecting seat of fixed connection on pipeline two on the pipeline one of fixed connection, the pipe of pegging graft that fixedly connected with link up with pipeline one on the first connecting seat, the pipe of pegging graft that fixedly connected with link up with pipeline two on the second connecting seat, annular inserting groove has been seted up on the mouth of pipe terminal surface of pipe of pegging graft one, pipe two and annular inserting groove slip grafting, be provided with the filling device who fills space between pipe two and the annular inserting groove inner tank wall of pegging graft on the pipe two, be provided with the fixing device who is used for making first connecting seat and second connecting seat be connected fixedly on first connecting seat and the second connecting seat.

By adopting the technical scheme, when the first pipeline is connected with the second pipeline, the first pipeline is firstly inserted into the annular insertion groove through the second insertion pipe, then the filling device is used for filling a gap between the second insertion pipe and the inner groove wall of the annular insertion groove, and finally the fixing device is used for connecting and fixing the first connecting seat and the second connecting seat Reduce the consumption of manpower and energy.

Optionally, the filling device comprises a filling block slidably connected to the outer pipe wall of the insertion pipe, and a pushing spring fixedly connected to the inner wall of the insertion pipe and used for pushing the filling block to move, a plurality of mounting grooves are formed in the outer side wall of the insertion pipe II, the filling block is slidably connected to the mounting grooves, one end of the pushing spring is fixedly connected to the filling block, the other end of the pushing spring is fixedly connected to the groove wall of the mounting groove, and the filling block is abutted to the inner groove wall of the annular insertion groove.

Through adopting above-mentioned technical scheme, the filling block slides and contradicts in the cell wall of cyclic annular inserting groove under the effect that promotes the spring, fills the space between the interior cell wall of inserting pipe two and cyclic annular inserting groove, is favorable to improving the leakproofness between inserting pipe two and inserting pipe one to improve the leakproofness between pipeline one and the pipeline two, simultaneously, produce the extrusion between filling block and the cyclic annular inserting groove interior cell wall and be favorable to making inserting pipe one more firm with inserting pipe two grafting.

Optionally, a first sealing gasket is fixedly connected to the side wall of the filling block, and the first sealing gasket is attached to and abutted against the inner groove wall of the annular insertion groove.

By adopting the technical scheme, the first sealing gasket can further improve the sealing property between the second plug pipe and the annular plug groove.

Optionally, the fixing device includes a positioning plate hinged to the second connecting seat, the positioning plate is arranged along the length direction of the second inserting pipe, a clamping groove is formed in the first connecting seat, the positioning plate is rotatably clamped in the clamping groove, a clamping block is fixedly connected to the positioning plate, the clamping block is arranged along the direction perpendicular to the plate surface of the positioning plate, a clamping groove is clamped on the inner groove wall of the clamping groove, and the clamping block is rotatably clamped with the clamping groove.

By adopting the technical scheme, after the first inserting pipe and the second inserting pipe are inserted, the positioning plate is rotated and clamped in the clamping groove, and meanwhile, the clamping block is clamped in the clamping groove, so that the first connecting seat and the second connecting seat can be connected and fixed by utilizing the clamping of the clamping block and the clamping groove.

Optionally, the side wall of the positioning plate is fixedly connected with a magnetic block, the inner groove wall of the clamping groove is fixedly connected with an iron block, and the magnetic block and the iron block are magnetically adsorbed.

Through adopting above-mentioned technical scheme, the magnetic path is favorable to making locating plate and draw-in groove block more firm with the absorption of iron plate to improve the fastness of being connected between first connecting seat and the second connecting seat.

Optionally, a sliding groove is formed in the side wall of the clamping groove, a limiting plate is connected to the sliding groove in the sliding groove, the limiting plate is arranged along the direction perpendicular to the positioning plate, a pulling spring used for pulling the limiting plate to be separated from the notch of the clamping groove is fixedly connected to the sliding groove, a tightening bolt is rotatably connected to the first connecting seat and penetrates through the inner cavity of the pulling spring, the end portion of the tightening bolt is abutted to the side wall of the limiting plate in a laminating mode, and the positioning plate is slidably shielded in the notch of the clamping groove.

Through adopting above-mentioned technical scheme, revolve to twist and support tight bolt, under the promotion that supports tight bolt, the limiting plate slides and shelters from in the draw-in groove notch, can avoid droing in the locating plate groove draw-in groove, is favorable to making pipeline one and pipeline two be connected more firmly.

Optionally, a first annular groove is formed in the first connecting seat, a second annular groove is formed in the second connecting seat, the first annular groove and the second annular groove are both arranged along the circumferential direction of the first pipeline, a positioning block is clamped between the first connecting seat and the second connecting seat, a first positioning lug and a second positioning lug are fixedly connected to the positioning block, the first positioning lug is in sliding insertion with the first annular groove, the second positioning lug is in sliding insertion with the second annular groove, and the positioning block is abutted against the outer side wall of the first connecting seat and the outer side wall of the second connecting seat.

Through adopting above-mentioned technical scheme, utilize the grafting of location lug one and annular groove one, the grafting of location lug two and annular groove two can make and be connected more firmly between first connecting seat and the second connecting seat, reduces the possibility that appears becoming flexible between first connecting seat and the second connecting seat, can shelter from plug pipe one and plug pipe two simultaneously, is favorable to protecting fixing device, filling device to improve firm in connection between pipeline one and the pipeline two.

Optionally, a limiting hole is formed in the side wall of the first positioning lug and the side wall of the second positioning lug, a positioning rod is connected to the limiting hole in a sliding mode, a locking spring used for pushing the positioning rod to move is fixedly connected to the limiting hole, one end of the locking spring is fixedly connected to the positioning rod, the other end of the locking spring is fixedly connected to the inner wall of the limiting hole, and the positioning rod is connected with the limiting hole in a sliding mode in a plug-in mode.

Through adopting above-mentioned technical scheme, the grafting of locating lever and spacing hole can make locating lug one more firm with annular groove one grafting, and locating lug two is more firm with annular groove two grafting.

Optionally, a second sealing gasket is fixedly connected to the side wall of the positioning block, and the second sealing gasket is attached to and abutted against the outer side walls of the first connecting seat and the second connecting seat.

Through adopting above-mentioned technical scheme, sealed being provided with of filling up two does benefit to and further improves the firm in connection nature and the seal between pipeline one and the pipeline two.

To sum up, the application comprises the following beneficial technical effects:

1. through the first inserting pipe, the second inserting pipe, the filling device and the fixing device, the connecting contact area between the first pipeline and the second pipeline can be increased, the possibility that the connecting part of the first pipeline and the second pipeline is loosened due to corrosion of a single structure is reduced, and therefore the problems of pipeline maintenance frequency and labor and energy consumption caused by corrosion of bolts can be solved;

2. through the setting of locating piece, not only can make and be connected more firmly between first connecting seat and the second connecting seat, reduce the not hard up possibility of appearing between first connecting seat and the second connecting seat, can also shelter from plug pipe one and plug pipe two, protect fixing device, filling device to improve firm in connection between pipeline one and the pipeline two.

Drawings

Fig. 1 is an exploded view of a pipe connection structure in the related art.

Fig. 2 is an exploded view of the pipe connection structure in the embodiment of the present application.

Fig. 3 is an exploded view of the embodiment of the present application for embodying the first and second bayonet pipes.

Fig. 4 is a schematic view of an enlarged view at a in fig. 3.

Fig. 5 is a schematic sectional view showing a pipe connecting structure in an embodiment of the present application.

Fig. 6 is an enlarged view of fig. 5 at B.

Fig. 7 is a schematic sectional view for embodying a clinch bolt.

Fig. 8 is an enlarged view of fig. 7 at C.

Fig. 9 is an enlarged view of fig. 5 at D.

Description of reference numerals: 1. a first connecting seat; 2. a second connecting seat; 3. inserting a first inserting pipe; 4. a second plug pipe; 5. positioning blocks; 7. an annular insertion groove; 8. a filling device; 81. filling blocks; 82. a push spring; 9. mounting grooves; 10. a first sealing gasket; 11. positioning a plate; 12. a placement groove; 13. a bit block; 14. a card slot; 15. a clamping groove; 16. a magnetic block; 17. an iron block; 18. a chute; 19. a limiting plate; 20. pulling the spring; 21. a threaded hole; 22. tightly abutting against the bolt; 23. a first annular groove; 24. a second annular groove; 26. a second sealing gasket; 27. positioning the first bump; 28. a second positioning lug; 29. a limiting hole; 30. positioning a rod; 31. a locking spring; 32. a flange structure; 33. a rubber ring; 34. a first pipeline; 35. and a second pipeline.

Detailed Description

The present application is described in further detail below with reference to figures 2-9.

The embodiment of the application discloses pipeline connection structure for municipal water supply and drainage.

Examples

Referring to fig. 2 and 3, the pipe connection structure for municipal water supply and drainage includes a first connection block 1 fixedly connected to a first pipe 34, and a second connection block 2 fixedly connected to a second pipe 35. The first connecting seat 1 is provided with a first inserting pipe 3, the second connecting seat 2 is provided with a second inserting pipe 4, the first connecting seat 1 and the second connecting seat 2 are provided with fixing devices for connecting and fixing the first connecting seat 1 and the second connecting seat 2, and the first connecting seat 1 and the second connecting seat 2 are further provided with positioning blocks 5 for connecting the first connecting seat 1 and the second connecting seat 2 more tightly.

Wherein, first connecting seat 1 and second connecting seat 2 all are cylindric setting, the terminal surface and the first 34 fixed connection of pipeline of first connecting seat 1, the terminal surface and the second 35 fixed connection of pipeline of second connecting seat 2. The limbers have all been seted up along its axis direction on first connecting seat 1 and the second connecting seat 2, and the inner chamber of limbers is cylindric setting. The water through hole on the first connecting seat 1 is communicated with the first pipeline 34, and the water through hole on the second connecting seat 2 is communicated with the second pipeline 35.

Referring to fig. 2 and 3, the first plug pipe 3 is cylindrical, the first plug pipe 3 is fixedly connected to an end surface of the first connecting seat 1, which faces away from the first pipeline 34, and a pipe cavity of the first plug pipe 3 is communicated with a water through hole in the first connecting seat 1.

Referring to fig. 2 and 3, the second inserting pipe 4 is arranged in a cylindrical shape, the second inserting pipe 4 is fixedly connected to the end face, opposite to the second pipeline 35, of the second connecting seat 2, and a pipe cavity of the second inserting pipe 4 is communicated with a water through hole in the second connecting seat 2.

Referring to fig. 2 and 3, the caliber of the tube cavity of the second plug-in pipe 4 is larger than that of the first plug-in pipe 3, and the caliber of the outer ring of the second plug-in pipe 4 is smaller than that of the outer ring of the first plug-in pipe 3.

Referring to fig. 3 and 4, an annular insertion groove 7 is formed in the end face, facing the pipe orifice of the second insertion pipe 4, of the first insertion pipe 3, the inner cavity of the annular insertion groove 7 is cylindrical, and the annular insertion groove 7 is annularly arranged in the inner cavity of the insertion pipe. The second inserting pipe 4 is inserted in the annular inserting groove 7 in a sliding mode.

Referring to fig. 5 and 6, the second insertion tube 4 is provided with a filling device 8, and the filling device 8 includes a filling block 81 disposed on the second insertion tube 4 and a pushing spring 82 disposed on the second insertion tube 4 for pushing the filling block 81 to move.

Referring to fig. 5 and 6, a plurality of mounting grooves 9 are formed in the outer side wall of the second plug pipe 4, and the mounting grooves 9 are circumferentially and equidistantly arranged on the outer side wall of the second plug pipe 4 along the circumferential direction of the second plug pipe 4.

Referring to fig. 5 and 6, the filling block 81 is slidably coupled in the mounting groove 9, and the push spring 82 has one end fixedly coupled to a sidewall of the mounting groove 9 facing a notch thereof and the other end fixedly coupled to a sidewall of the filling block 81. The side wall of the filling block 81 opposite to the side wall of the pushing spring 82 is in a convex arc shape, and a first sealing gasket 10 is fixedly connected to the side wall.

After the second plug pipe 4 is plugged into the annular plug groove 7, the first sealing gasket 10 is abutted against the groove wall of the annular plug groove 7 under the action of the pushing spring 82, so that the gap between the annular plug groove 7 and the filling block 81 can be filled, and the plug pipe 4 and the first plug pipe 3 can be plugged more firmly.

Referring to fig. 3 and 4, the fixing device includes a positioning plate 11 hinged on the second connecting seat 2, and the positioning plate 11 is arranged in a rectangular parallelepiped and is provided with 4 positioning blocks. The second connecting seat 2 has seted up 4 standing grooves 12 on the terminal surface of second 35 pipeline dorsad, and the axis direction setting at two 35 inner chambers of perpendicular to pipeline is all followed to four 12 inner chambers of standing groove, and equidistant distribution in 4 standing grooves 12 is on the terminal surface of second connecting seat 2, and standing groove 12 link up with the arc limit lateral wall of second connecting seat 2.

Referring to fig. 3 and 4, the positioning plate 11 is hinged in the placing groove 12, a clamping block 13 is fixedly connected to the plate surface of the positioning plate 11, and the clamping block 13 is disposed in a cylindrical shape and is disposed along the direction perpendicular to the plate surface of the positioning plate 11.

Referring to fig. 3 and 4, 4 clamping grooves 14 have been seted up on the terminal surface of first connecting block 1 back to pipeline 34, and the axis direction that the inner chamber of clamping groove 14 all lies along two 35 inner chambers of perpendicular to pipeline sets up, and 4 clamping grooves 14 equidistant distribution are on the terminal surface of first connecting block 1, and clamping groove 14 link up with the arc limit lateral wall of first connecting block 1. The wall of the slot 14 is provided with a clamping groove 15, and the inner cavity of the clamping groove 15 is arc-shaped. After the first plug pipe 3 and the second plug pipe 4 are plugged, the positioning plate 11 is rotated, the positioning plate 11 can be rotatably clamped into the clamping groove 14, the positioning plate 11 is attached to the inner groove wall of the clamping groove 14, the clamping block 13 is rotatably clamped into the clamping groove 15 in the rotating process of the positioning plate 11, and the arc edge of the clamping block 13 is attached to and abutted against the inner groove wall of the clamping groove 15.

Referring to fig. 7 and 8, a magnetic block 16 is fixedly connected to a side wall of the positioning plate 11, and the magnetic block 16 is embedded on a plate surface of the positioning plate 11. The inner groove wall of the clamping groove 14 facing the notch is fixedly connected with an iron block 17, and the iron block 17 is embedded on the inner groove wall of the clamping groove 14. When the blocking block 13 is in rotating contact with the side wall of the blocking groove 15 towards the notch of the blocking groove, the magnetic block 16 is attracted with the iron block 17 by magnetic force.

Referring to fig. 7 and 8, a sliding groove 18 is formed in a side wall of the slot 14, an inner cavity of the sliding groove 18 is rectangular, and the sliding groove 18 is communicated with the slot 14. A limiting plate 19 is connected in the sliding groove 18 in a sliding mode, and the limiting plate 19 is arranged in a cuboid shape and is arranged in a direction perpendicular to the positioning plate 11.

Referring to fig. 7 and 8, a pulling spring 20 for pulling the limiting plate 19 to disengage from the notch of the slot 14 is fixedly connected to the sliding groove 18, the pulling spring 20 is disposed in a direction parallel to the plate surface of the positioning plate 11, one end of the pulling spring 20 is fixedly connected to a side wall of the sliding groove 18, and the other end of the pulling spring is fixedly connected to a side wall of the limiting plate 19.

Referring to fig. 7 and 8, a threaded hole 21 is formed in the first connecting seat 1, an inner cavity of the threaded hole 21 is communicated with the sliding groove 18 and penetrates through an arc-side wall of the first connecting seat 1, and an inner cavity of the threaded hole 21 is arranged in a direction parallel to the direction of pulling the spring 20. The screw hole 21 is rotatably connected with a resisting bolt 22, the resisting bolt 22 is penetrated in an inner cavity of the pulling spring 20, the end part of the resisting bolt 22 is attached to and abutted against the side wall of the limiting plate 19, and the positioning plate 11 is slidably shielded in the notch of the clamping groove 14 under the pushing of the pulling spring 20.

Referring to fig. 5 and 9, the first connecting seat 1 is provided with a first annular groove 23, and the first annular groove 23 is disposed along the circumferential direction of the first connecting seat 1 and is close to the first pipeline 34. An annular groove II 24 is formed in the second connecting seat 2, and the annular groove II 24 is arranged along the circumferential direction of the second connecting seat 2 and is close to the second pipeline 35.

Referring to fig. 5 and 9, the positioning blocks 5 are clamped on the first connecting seat 1 and the second connecting seat 2, the positioning blocks 5 are arranged in a semi-annular shape, two positioning blocks 5 are arranged, the two positioning blocks 5 can be spliced into a cylindrical shape, and the two positioning blocks 5 can be abutted to the arc edges of the first connecting seat 1 and the second connecting seat 2. When the two positioning blocks 5 abut against the arc edges of the first connecting seat 1 and the second connecting seat 2, the two positioning blocks 5 are covered on the peripheries of the first plug-in pipe 3 and the second plug-in pipe 4.

Referring to fig. 5 and 9, a second sealing gasket 26 is fixedly connected to the concave side wall of the positioning block 5, and the second sealing gasket 26 is attached to and abutted against the outer side walls of the first connecting seat and the second connecting seat.

Referring to fig. 5 and 9, the positioning block 5 is fixedly connected to the first positioning protrusion 27 and the second positioning protrusion 28 on the side walls of the first connecting seat 1 and the second connecting seat 2, and the first positioning protrusion 27 and the second positioning protrusion 28 are disposed in a semi-ring shape. When the positioning block 5 abuts against the arc edges of the first connecting seat 1 and the second connecting seat 2, the first positioning projection 27 is slidably inserted into the first annular groove 23, and the second positioning projection 28 is slidably inserted into the second annular groove 24.

Referring to fig. 5 and 9, the side walls of the first positioning protrusion 27 and the second positioning protrusion 28 are both provided with a limiting hole 29, and the inner cavity of the limiting hole 29 is arranged in a cylindrical shape and arranged along the length direction of the first pipeline 34. The limiting holes 29 are all connected with positioning rods 30 in a sliding mode, and the positioning rods 30 are arranged in a cylindrical mode.

Referring to fig. 5 and 9, a locking spring 31 for pushing the positioning rod 30 to move is fixedly connected in the limiting hole 29, the locking spring 31 is arranged along the length direction of the positioning rod 30, one end of the locking spring 31 is fixedly connected to the positioning rod 30, the other end of the locking spring 31 is fixedly connected to the inner wall of the limiting hole 29, when the first positioning protrusion 27 is slidably inserted into the first annular groove 23, and the second positioning protrusion 28 is slidably inserted into the second annular groove 24, the positioning rod 30 is slidably inserted into the limiting hole 29 under the action of the locking spring 31.

The implementation principle of the embodiment is as follows: when the first pipeline 34 is connected with the second pipeline 35, the second insertion pipe 4 is firstly inserted into the annular insertion groove 7, after the insertion is completed, the filling block 81 slides under the action of the pushing spring 82 to abut against the inner groove wall of the annular insertion groove 7, then the positioning plate 11 is rotated, the positioning plate 11 is rotatably clamped in the clamping groove 14, meanwhile, the clamping block 13 is clamped in the clamping groove 15, the first connecting seat 1 and the second connecting seat 2 can be connected and fixed by utilizing the clamping of the clamping block 13 and the clamping groove 15, and finally, the fixing device is covered by the positioning block 5, and the first connecting seat 1 and the second connecting seat 2 are connected and fixed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a pipeline connection structure for municipal administration water supply and drainage which characterized in that: the pipeline connecting device comprises a first connecting seat (1) fixedly connected to a first pipeline (34) and a second connecting seat (2) fixedly connected to a second pipeline (35), wherein a first inserting pipe (3) communicated with the first pipeline (34) is fixedly connected to the first connecting seat (1), a second inserting pipe (4) communicated with the second pipeline (35) is fixedly connected to the second connecting seat (2), an annular inserting groove (7) is formed in the end face of a pipe orifice of the first inserting pipe (3), the second inserting pipe (4) is slidably inserted into the annular inserting groove (7), a filling device (8) for filling a gap between the second inserting pipe (4) and the inner groove wall of the annular inserting groove (7) is arranged on the second inserting pipe (4), and fixing devices for fixedly connecting the first connecting seat (1) and the second connecting seat (2) are arranged on the first connecting seat (1) and the second connecting seat (2), the fixing device comprises a positioning plate (11) hinged to the second connecting seat (2), the positioning plate (11) is arranged along the length direction of the second plug-in pipe (4), a clamping groove (14) is formed in the first connecting seat (1), the positioning plate (11) is rotatably clamped in the clamping groove (14), a clamping block (13) is fixedly connected to the positioning plate (11), the clamping block (13) is arranged along the direction perpendicular to the surface direction of the positioning plate (11), a clamping groove (15) is clamped on the inner groove wall of the clamping groove (14), the clamping block (13) is rotatably clamped with the clamping groove (15), a sliding groove (18) is formed in the side wall of the clamping groove (14), a limiting plate (19) is slidably connected to the sliding groove (18), the limiting plate (19) is arranged along the direction perpendicular to the positioning plate (11), and a pulling spring (20) for pulling the limiting plate (19) to be separated from the notch of the clamping groove (14) is fixedly connected to the sliding groove (18), the connecting device is characterized in that a fastening bolt (22) is rotatably connected to the first connecting seat (1), the fastening bolt (22) penetrates through an inner cavity of the pulling spring (20), the end portion of the fastening bolt (22) is attached to and abutted against the side wall of the limiting plate (19), the positioning plate (11) is slidably shielded in a notch of the clamping groove (14), a first annular groove (23) is formed in the first connecting seat (1), a second annular groove (24) is formed in the second connecting seat (2), the first annular groove (23) and the second annular groove (24) are both arranged along the circumferential direction of the first pipeline (34), a positioning block (5) is clamped on the first connecting seat (1) and the second connecting seat (2), a first positioning lug (27) and a second positioning lug (28) are fixedly connected to the positioning block (5), and the first positioning lug (27) is slidably inserted into the first annular groove (23), the utility model discloses a positioning device, including locating lug (27), locating lug (29), locking spring (31), other end fixed connection in the inner wall of spacing hole (29), locating lever (30) and spacing hole (29) slip grafting, locating lug (28) and annular groove (24) slip are inserted and are closed, locating piece (5) are contradicted with the lateral wall laminating of first connecting seat (1), second connecting seat (2), spacing hole (29) have all been seted up on the lateral wall of locating lug (27) and locating lug (28), equal sliding connection has locating lever (30) in spacing hole (29), fixedly connected with is used for promoting locking spring (31) that locating lever (30) removed in spacing hole (29), locking spring (31) one end fixed connection in locating lever (30), other end fixed connection in the inner wall of spacing hole (29), locating lever (30) and spacing hole (29) slip grafting.

2. The pipe connection structure for municipal water supply and drainage according to claim 1, wherein: filling device (8) are including filling block (81), the fixed connection that sliding connection is used for promoting on two (4) outer pipe walls of grafting pipe pushing spring (82) that filling block (81) removed, a plurality of mounting grooves (9) have been seted up to the lateral wall of grafting pipe two (4), filling block (81) sliding connection is in mounting groove (9), pushing spring (82) one end fixed connection is in filling block (81), other end fixed connection is in the cell wall of mounting groove (9), filling block (81) are contradicted with the interior cell wall laminating of cyclic annular inserting groove (7).

3. The pipe connection structure for municipal water supply and drainage according to claim 2, wherein: fixedly connected with sealed pad (10) on the lateral wall of filling block (81), sealed pad (10) are laminated with the inner tank wall of cyclic annular inserting groove (7) and are contradicted.

4. The pipe connection structure for municipal water supply and drainage according to claim 1, wherein: the side wall of the positioning plate (11) is fixedly connected with a magnetic block (16), the inner groove wall of the clamping groove (14) is fixedly connected with an iron block (17), and the magnetic block (16) and the iron block (17) are magnetically adsorbed.

5. The pipe connection structure for municipal water supply and drainage according to claim 1, wherein: fixedly connected with sealed second (26) of filling up on the lateral wall of locating piece (5), sealed second (26) of filling up is contradicted with the lateral wall laminating of first connecting seat (1), second connecting seat (2).