CN115519005A - Connecting device and method for bimetallic pipe - Google Patents

Abstract

The invention relates to the technical field of bimetallic pipe connection, in particular to a device and a method for connecting bimetallic pipes. In the process of connecting and manufacturing the double-metal pipe connecting device designed by the invention, the two ends of the double-metal pipe are sealed and plugged by adopting the plugging and inflating mechanism, then the inner wall and the outer wall of the double-metal pipe are inflated and pressurized, so that the inner lining pipe gradually expands outwards in the diameter direction, and the outer base pipe gradually contracts inwards in the diameter direction, thus the efficiency of jointing and connecting the inner lining pipe and the outer base pipe is improved, the phenomenon that the side walls of the outer base pipe and the inner lining pipe of the double-metal pipe are uneven due to moving collision with other reasons before composite connection, so that the two pipes have poor gap connection effect in the connection process is avoided, the double-layer pipes of the double-metal pipe are repaired, and the phenomenon that gaps exist between double pipes of the double-metal pipe, so that the double-metal pipe generates larger noise due to vibration in the use process is also avoided.

Description

Connecting device and method for bimetallic pipe

Technical Field

The invention relates to the technical field of bimetallic pipe connection, in particular to a device and a method for connecting bimetallic pipes.

Background

The bimetal pipe is also called as bimetal composite pipe and is formed by connecting an inner lining pipe and an outer base pipe, wherein the outer base pipe is responsible for bearing and rigidly supporting the pipeline, and the inner lining pipe plays roles in corrosion resistance, abrasion resistance and the like.

The bimetallic pipe has the following problems in the connection process: because interior bushing pipe collides with outer base pipe at the in-process that removes or transports, the surface that leads to interior bushing pipe or outer base pipe appears unevenness for the connecting effect between the connection of interior bushing pipe and outer base pipe of bimetallic tube is not good, and interior bushing pipe or the uneven lateral wall of outer base pipe also can lead to bimetallic tube to have the gap between the double-layer tube when connecting, thereby it shakes when the fluid flow to lead to bimetallic tube in the in-process that uses to produce great noise.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme that the connecting device for the bimetallic tube comprises a base, wherein a mounting seat is installed at the top of the base, a plugging inflation mechanism is arranged on the mounting seat and used for inflating, pressing and connecting the bimetallic tube, the plugging inflation mechanism comprises a sealing barrel and an inflation column which are fixedly connected on the mounting seat, the inflation column is sleeved outside the sealing barrel, an ear plate is installed at the top of the mounting seat, a plugging plate which plugs the sealing barrel and the inflation column is connected onto the ear plate through a rotary locking assembly, the rotary locking assembly drives the plugging plate to move and rotate, a supporting assembly which fixes the bimetallic tube between the sealing barrel and the inflation column is arranged on the sealing barrel, a pushing assembly which is matched with the mounting seat and used for sealing two ends of the bimetallic tube is installed on the end face of the plugging plate close to the sealing barrel, the side walls of the sealing barrel and the inflation column are both of a cavity structure, a plurality of inflation holes are formed in the inner wall of the sealing barrel and the side wall of the inflation column, and an air guide groove communicated with the inner cavity of the inflation column are formed in the mounting seat.

Preferably, support and push away the subassembly and include that fixed connection is close to the solid fixed ring of sealed section of thick bamboo terminal surface at the shutoff board, gu fixed ring keeps away from the terminal surface of shutoff board and has seted up flexible groove, sliding connection has the shift ring in the flexible groove, the shift ring keeps away from the terminal surface in flexible groove and installs annular closing plate, gu fixed ring's inner wall set up along its circumference arrange and with the groove that slides that flexible communicates, the inner wall of shift ring is installed along its circumference and is arranged and run through the connecting rod in groove that slides, install jointly between the connecting rod and support solid the seat, support solid one end rotation that the post was kept away from to aerify to the seat and be connected with adjusting screw, adjusting screw runs through the shutoff board, and be connected through screw-thread fit's mode between adjusting screw and the shutoff board.

Preferably, rotatory locking Assembly includes the pull rod of sliding connection on the otic placode, pull rod and shutoff board fixed connection, and the slide groove has been seted up at the base top, and the electronic slider of slide groove along its length direction removal, the top of electronic slider is installed and is taken the arm-tie, takes the arm-tie to rotate with the pull rod to be connected, has seted up the spacing groove on the pull rod, and the spacing inslot is connected with the rotary rod along its axial displacement, is connected through screw-thread fit's mode between rotary rod and the area arm-tie.

Preferably, the supporting component includes that sliding connection evenly arranges for the seat of accepting of T type structure at the post lateral wall of aerifing and along its circumference, and accepts the seat and arrange along aerifing the post axial, and the vertical section of accepting the seat runs through to have a push rod after aerifing the post lateral wall, and a plurality of push rods of arranging along aerifing post circumference articulate jointly to have a connection pad, is connected through the tie rod between the connection pad, installs the electric telescopic handle who is located aerifing the post on the mount pad, and electric telescopic handle's flexible end is connected rather than adjacent connection pad.

Preferably, the mounting seat is provided with an annular gasket, and the annular gasket is abutted against the bimetallic tube.

Preferably, the spread groove is installed at the top of base, and the bottom of shutoff board articulates through torsional spring pole has the rotor plate, and the bottom of shutoff board is installed and is carried out spacing limiting plate to the rotor plate, and the rotor plate is located the spread groove, has seted up the slot on the rotor plate, takes to rotate on the arm-tie to be connected with the post of drawing soon, draws the post to slide to run through and install the card strip behind base, spread groove, the slot soon, and magnet, the magnetism of two magnets is opposite are all installed to the opposite face of card strip and rotor plate.

Preferably, the bottom of the rotating plate is rotatably connected with a grinding reducing roller.

In addition, the invention also provides a connecting method of the bimetallic pipe, which comprises the following steps: s1, supporting and fixing: after the bimetallic tube is inserted between the sealing cylinder and the inflating column, the electric telescopic rod works, the electric telescopic rod pushes the connecting disc to move, the connecting disc pushes the bearing seat to move through the push rod in the moving process, and the inner wall of the bimetallic tube is supported by the bearing seat.

S2, rotary plugging: when the rotary rod is rotated, the rotary rod drives the pull rod to rotate and move towards the limiting groove, the pull rod rotates to drive the plugging plate to rotate, the plugging plate and the base are in a vertical state, then the electric sliding block drives the belt pull plate to move relative to the pull rod, the pull rod pulls the plugging plate to move, the plugging plate is tightly attached to the end portion of the sealing tube, and finally the bimetallic tube is tightly sealed through the abutting-pushing assembly, so that the inner wall of the bimetallic tube is not communicated with the sealing tube.

S3, inflating, extruding and connecting: the air is introduced into the air guide groove through an external air pump connected with the air inflation tube, the air enters cavity bodies of the sealing barrel and the air inflation column through the air guide groove, and finally the air is blown to the side wall of the bimetallic tube from the corresponding air inflation hole, and the outer base tube and the inner lining tube of the bimetallic tube are closely connected under the action of air pressure on two sides.

The invention has the beneficial effects that: 1. in the process of connecting and manufacturing the double-metal pipe connecting device designed by the invention, the two ends of the double-metal pipe are sealed and plugged by adopting the plugging and inflating mechanism, then the inner wall and the outer wall of the double-metal pipe are inflated and pressurized, so that the inner lining pipe gradually expands outwards in the diameter direction, and the outer base pipe gradually contracts inwards in the diameter direction, thus the efficiency of jointing and connecting the inner lining pipe and the outer base pipe is improved, the phenomenon that the side walls of the outer base pipe and the inner lining pipe of the double-metal pipe are uneven due to moving collision with other reasons before composite connection, so that the two pipes have poor gap connection effect in the connection process is avoided, the double-layer pipes of the double-metal pipe are repaired, and the phenomenon that gaps exist between double pipes of the double-metal pipe, so that the double-metal pipe generates larger noise due to vibration in the use process is also avoided.

2. According to the invention, after the rotating plate is tightly attached to the limiting plate, the clamping strip is rotated to be in a vertical state, so that the magnets on the clamping strip and the rotating plate are attracted, and then the rotating column pulls the bottom of the plugging plate to move through the connection of the clamping strip and the rotating plate in the moving process of the belt pulling plate, so that the upper side and the lower side of the plugging plate are fixed, the fixing effect of the plugging plate is increased, and the situation that the plugging plate moves when the bimetallic pipe is in inflation laminating connection, and the connection effect of the bimetallic pipe is poor is prevented.

3. The plugging plate is in an inclined state before the plugging plate does not work, and the plugging plate and the base form a certain angle, so that the bimetallic tube is conveniently inserted between the sealing cylinder and the inflatable column, and the problem that the space of the connecting device is large due to the fact that the plugging plate only moves along the length direction of the base is also avoided.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a schematic main perspective structure of the present invention.

Fig. 2 is a first partial perspective view of the present invention.

FIG. 3 is a second partial perspective view of the present invention

Fig. 4 is a top view of the present invention.

FIG. 5 isbase:Sub>A sectional view taken along line A-A of the present invention 4.

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

Fig. 7 is an enlarged view of the invention at C in fig. 5.

In the figure: 1. a base; 10. connecting grooves; 11. a rotating plate; 110. reducing the grinding roller; 12. a limiting plate; 13. a slot; 14. rotationally pulling the column; 15. clamping the strip; 16. a magnet; 2. a mounting base; 20. an annular gasket; 3. a plugging and inflating mechanism; 30. a sealing cylinder; 31. an inflatable column; 32. rotating the locking assembly; 320. a pull rod; 321. a slide groove; 322. a pulling plate is provided; 324. a limiting groove; 325. rotating the rod; 33. a plugging plate; 35. a support assembly; 350. a bearing seat; 351. a push rod; 352. a connecting disc; 353. an electric telescopic rod; 36. a pushing component; 360. a fixing ring; 361. a moving ring; 362. an annular seal plate; 363. a connecting rod; 364. a support seat; 365. adjusting the screw rod; 37. an inflation hole; 38. a gas guide groove; 39. an inflation tube; 4. a bimetallic tube.

Detailed Description

Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1, 2, 3, 4, 5 and 6, a connecting device for a bimetal tube includes a base 1, a mounting seat 2 is installed at the top of the base 1, a plugging and inflating mechanism 3 is installed on the mounting seat 2, the plugging and inflating mechanism 3 is used for inflating and pressing the bimetal tube 4, the plugging and inflating mechanism 3 includes a sealing cylinder 30 and an inflating cylinder 31 fixedly connected to the mounting seat 2, the inflating cylinder 31 is sleeved outside the sealing cylinder 30, an ear plate is installed at the top of the mounting seat 2, a plugging plate 33 for plugging both the sealing cylinder 30 and the inflating cylinder 31 is connected to the ear plate through a rotary locking assembly 32, the rotary locking assembly 32 drives the plugging plate 33 to move and rotate, a supporting assembly 35 for fixing the bimetal tube 4 between the sealing cylinder 30 and the inflating cylinder 31 is installed on the sealing cylinder 30, a pushing assembly 36 for sealing both ends of the bimetal tube 4 is installed on the end face of the plugging plate 33 close to the mounting seat 2, the side walls of the sealing cylinder 30 and the inflating cylinder 31 are both have a cavity structure, the inner wall of the sealing cylinder 30 is communicated with the side wall of the inflating cylinder 31, and the inner wall of the mounting seat 38 is provided with a plurality of guide grooves 38 for guiding the inner cavity of the inflating cylinder 31, and the mounting seat 38, and the inner cavity of the inflating cylinder 31.

The bimetal tube 4 which is sleeved and connected is inserted between the sealing cylinder 30 and the inflatable column 31, then the bimetal tube 4 is supported by the supporting component 35, then the rotating locking component 32 drives the plugging plate 33 to rotate, the plugging plate 33 inclines to form a certain angle with the base 1 before rotating so as to be convenient for inserting the bimetal tube 4 between the sealing cylinder 30 and the inflatable column 31, the problem that the plugging plate 33 only moves along the length direction of the base 1 to cause larger space occupation of a connecting device is also avoided, the plugging plate 33 after rotating moves under the driving of the rotating locking component 32 until the plugging plate 33 is tightly abutted against the sealing cylinder 30, then the bimetal tube 4 is tightly abutted and sealed by the abutting component 36, so that the inner wall of the bimetal tube 4 is not communicated with the sealing cylinder 30, then the support component 35 contracts and no longer supports the bimetallic tube 4, then the air is inflated into the air guide groove 38 through an external air pump connected with the inflation tube 39, the air enters the cavity of the sealing cylinder 30 and the cavity of the inflation column 31 through the air guide groove 38, and finally the air is blown to the side wall of the bimetallic tube 4 from the corresponding inflation hole 37, the outer base tube and the inner lining tube of the bimetallic tube 4 are close to and attached to each other under the action of air pressure at two sides, so that the outer base tube and the inner lining tube of the bimetallic tube 4 are more closely and uniformly connected, and the uneven condition that the side walls of the outer base tube and the inner lining tube of the bimetallic tube 4 are moved and collided by other reasons before composite connection is prevented, and the gap connection effect existing in the connection process of the outer base tube and the inner lining tube is poor.

Referring to fig. 3, 5 and 6, the supporting assembly 35 includes a receiving seat 350 slidably connected to the sidewall of the inflation column 31 and uniformly arranged along the circumferential direction thereof to form a T-shaped structure, the receiving seat 350 is axially arranged along the inflation column 31, a vertical section of the receiving seat 350 is hinged to a push rod 351 after penetrating through the sidewall of the inflation column 31, a plurality of push rods 351 arranged along the circumferential direction of the inflation column 31 are hinged to a connecting plate 352, the connecting plates 352 are connected with each other through a connecting rod, an electric telescopic rod 353 located in the inflation column 31 is installed on the installation seat 2, and the telescopic end of the electric telescopic rod 353 is connected with the adjacent connecting plate 352.

After the bimetallic tube 4 is inserted between the sealing cylinder 30 and the inflation column 31, the electric telescopic rod 353 works, the electric telescopic rod 353 pushes the connecting disc 352 to move, the connecting disc 352 pushes the bearing seat 350 to move through the push rod 351 in the moving process, and the inner wall of the bimetallic tube 4 is tightly supported by the bearing seat 350, so that the plugging plate 33 can plug the bimetallic tube 4 conveniently.

Referring to fig. 2, an annular gasket 20 is installed on the installation seat 2, and the annular gasket 20 abuts against the bimetallic tube 4, so that a gap between the bimetallic tube 4 and the bimetallic tube 4 is sealed, and gas is prevented from entering between the inner lining tube and the outer base tube of the bimetallic tube 4.

Referring to fig. 1, 2, 3 and 7, the rotation locking assembly 32 includes a pull rod 320 slidably connected to the ear plate, the pull rod 320 is fixedly connected to the plugging plate 33, a sliding groove 321 is formed in the top of the base 1, an electric slider moving along the length direction of the sliding groove 321 is disposed on the top of the electric slider, a belt pull plate 322 is mounted on the top of the electric slider, the belt pull plate 322 is rotatably connected to the pull rod 320, a limit groove 324 is formed in the pull rod 320, a rotation rod 325 moving along the axial direction of the rotation rod is connected to the limit groove 324, and the rotation rod 325 is connected to the belt pull plate 322 in a threaded manner.

When the rotating rod 325 is rotated, the rotating rod 325 drives the pull rod 320 to rotate and move towards the limiting groove 324, the pull rod 320 rotates to drive the plugging plate 33 to rotate until the plugging plate 33 is vertical to the base 1, then the electric slider drives the belt pull plate 322 to move together with the pull rod 320, and the pull rod 320 drives the plugging plate 33 to move until the plugging plate 33 is tightly attached to the end of the sealing pipe.

Referring to fig. 3 and 6, the pushing assembly 36 includes a fixing ring 360 fixedly connected to the end surface of the plugging plate 33 close to the sealing barrel 30, a telescopic slot is formed in the end surface of the fixing ring 360 far from the plugging plate 33, a moving ring 361 is slidably connected to the telescopic slot, an annular sealing plate 362 is installed on the end surface of the moving ring 361 far from the telescopic slot, a sliding slot which is arranged along the circumferential direction of the fixing ring 360 and is communicated with the telescopic slot is formed in the inner wall of the fixing ring 360, a connecting rod 363 which is arranged along the circumferential direction of the moving ring 361 and penetrates through the sliding slot is installed on the inner wall of the moving ring 361, a pushing seat 364 is installed between the connecting rods 363 together, an adjusting screw 365 is rotatably connected to one end of the pushing seat 364 far from the inflating column 31, the adjusting screw 365 penetrates through the plugging plate 33, and the adjusting screw 365 is connected with the plugging plate 33 in a threaded fit manner.

After the plugging plate 33 is tightly attached to the sealing cylinder 30, the adjusting screw 365 is rotated to drive the abutting seat 364 to move, the abutting seat 364 drives the moving ring 361 to move through the connecting rod 363 in the moving process until the moving ring 361 abuts against the end part of the bimetallic tube 4, an inflation cavity is formed between the bimetallic tube 4 and the inflation column 31 at the moment, an inflation cavity is formed between the bimetallic tube 4 and the sealing cylinder 30, the two inflation cavities are separated, inflation connection of the bimetallic tube 4 is facilitated, after the bimetallic tube 4 is fixed between the moving ring 361 and the mounting seat 2, the supporting component 35 is folded, and the supporting component 35 is prevented from influencing the uniformity of inflation connection of the bimetallic tube 4.

Referring to fig. 2, fig. 3 and fig. 5, connecting groove 10 is installed at the top of base 1, the bottom of shutoff board 33 articulates through the torsional spring pole has rotor plate 11, limiting plate 12 that carries on spacingly to rotor plate 11 is installed to the bottom of shutoff board 33, rotor plate 11 is located connecting groove 10, slot 13 has been seted up on the rotor plate 11, rotate on the area pulling plate 322 and be connected with rotatory pull post 14, rotatory pull post 14 slides and runs through base 1, connecting groove 10, install behind the slot 13 gib 15, magnet 16 is all installed to the opposite face of gib 15 and rotor plate 11, the magnetism of two magnet 16 is opposite.

After the blocking plate 33 rotates to be perpendicular to the base 1, the rotating plate 11 rotates, the clamping strip 15 on the rotary pull rod 320 is inserted into the slot 13 in the rotating process of the rotating plate 11 until the rotating plate 11 is tightly attached to the limiting plate 12, then the clamping strip 15 rotates to be in a vertical state, magnets 16 on the clamping strip 15 and the rotating plate 11 are attracted, the rotating column pulls the bottom of the blocking plate 33 to move through the connection of the clamping strip 15 and the rotating plate 11 in the moving process of the pulling plate 322, the upper side and the lower side of the blocking plate 33 are fixed at the moment, the fixing effect of the blocking plate 33 is improved, the blocking plate 33 is prevented from moving when the bimetallic tube 4 is connected in an inflation attaching mode, and the two magnets 16 are attracted to prevent the rotating plate 11 from being separated from the clamping strip 15 randomly.

Referring to fig. 5, a reducing roller 110 is rotatably connected to the bottom of the rotating plate 11, and the reducing roller 110 is used to reduce the friction between the rotating plate 11 and the connecting groove 10 during the rotation process, so as to facilitate the rotation of the rotating plate 11.

In addition, the invention also provides a connecting method of the bimetallic pipe, which comprises the following steps: s1, supporting and fixing: after the bimetallic tube 4 is inserted between the sealing cylinder 30 and the inflation column 31, the electric telescopic rod 353 works, the electric telescopic rod 353 pushes the connecting disc 352 to move, the connecting disc 352 pushes the bearing seat 350 to move through the push rod 351 in the moving process, and the inner wall of the bimetallic tube 4 is tightly supported by the bearing seat 350.

S2, rotary plugging: when the rotating rod 325 is rotated, the rotating rod 325 drives the pull rod 320 to rotate and move towards the limiting groove 324, the pull rod 320 rotates to drive the plugging plate 33 to rotate until the plugging plate 33 and the base 1 are in a vertical state, then the electric slider drives the belt pull plate 322 and the pull rod 320 to move, the pull rod 320 drives the plugging plate 33 to move until the plugging plate 33 is tightly attached to the end of the sealing pipe, and finally the bimetallic pipe 4 is tightly sealed through the abutting-pushing component 36, so that the inner wall of the bimetallic pipe 4 is not communicated with the sealing barrel 30.

S3, inflating, extruding and connecting: the air is introduced into the air guide groove 38 by an external air pump connected with the air inflation tube 39, the air enters the cavity of the sealing cylinder 30 and the cavity of the air inflation column 31 through the air guide groove 38, and finally the air is blown to the side wall of the bimetallic tube 4 from the corresponding air inflation hole 37, and the outer base tube of the bimetallic tube 4 is closely connected with the inner lining tube under the action of air pressure at two sides.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. A connecting device for bimetal pipes is characterized by comprising

The device comprises a base (1), wherein a mounting seat (2) is arranged at the top of the base (1);

the plugging and inflating mechanism (3) is arranged on the mounting seat (2) and is used for inflating, pressing and connecting the bimetallic pipe (4);

wherein, the plugging and inflating mechanism (3) comprises a sealing barrel (30) and an inflating column (31) which are fixedly connected on the mounting seat (2), the inflating column (31) is sleeved outside the sealing barrel (30), the top of the mounting seat (2) is provided with an ear plate, the ear plate is connected with a plugging plate (33) which plugs the sealing barrel (30) and the inflating column (31) through a rotary locking component (32), the rotary locking component (32) drives the plugging plate (33) to move and rotate, the sealing barrel (30) is provided with a supporting component (35) which fixes the bimetallic tube (4) between the sealing barrel (30) and the inflating column (31), the end surface of the plugging plate (33) close to the sealing barrel (30) is provided with a pushing component (36) which is matched with the mounting seat (2) to seal two ends of the bimetallic tube (4), the side walls of the sealing barrel (30) and the inflating column (31) are both of a cavity structure, the inner wall of the sealing barrel (30) and the side wall of the inflating column (31) are provided with a plurality of inflation holes (37), and the mounting seat (31) are provided with an inner cavity, the inner cavities of the sealing cylinders (30) are communicated with air guide grooves (38), and one side of the mounting seat (2) far away from the inflating column (31) is provided with an inflating pipe (39) communicated with the air guide grooves (38).

2. A connecting device for bimetal pipes according to claim 1, characterized in that: support and push away subassembly (36) including fixed connection at closure plate (33) near solid fixed ring (360) of a sealed section of thick bamboo (30) terminal surface, gu fixed ring (360) keep away from the terminal surface of closure plate (33) and seted up flexible groove, sliding connection has shift ring (361) in the flexible groove, shift ring (361) keep away from the terminal surface in flexible groove and install annular seal board (362), gu the inner wall of fixed ring (360) sets up along its circumference arrange and with the groove that slides, link rod (363) of arranging and running through the groove that slides along its circumference are installed to the inner wall of shift ring (361), install jointly between link rod (363) and support solid seat (364), support solid seat (364) and keep away from the one end rotation of gas column (31) and be connected with adjusting screw (365), adjusting screw (365) run through closure plate (33), and be connected through screw-thread fit's mode between adjusting screw (365) and the closure plate (33).

3. The apparatus for connecting bimetallic pipes as in claim 1, wherein: rotatory locking Assembly (32) are including pull rod (320) of sliding connection on the otic placode, pull rod (320) and shutoff board (33) fixed connection, slide groove (321) have been seted up at base (1) top, the electronic slider of its length direction removal is followed in slide groove (321), area arm-tie (322) are installed at the top of electronic slider, it is connected with pull rod (320) rotation to take arm-tie (322), spacing groove (324) have been seted up on pull rod (320), spacing groove (324) in-connection has along its axial displacement's rotary rod (325), be connected through screw-thread fit's mode between rotary rod (325) and the area arm-tie (322).

4. A connecting device for bimetal pipes according to claim 1, characterized in that: support component (35) include sliding connection and evenly arrange for the seat (350) of accepting of T type structure at aerifing post (31) lateral wall and along its circumference, and accept seat (350) and arrange along aerifing post (31) axial, it has push rod (351) to accept that the vertical section of seat (350) runs through to articulate behind post (31) lateral wall of aerifing, it has connection pad (352) to articulate jointly along a plurality of push rod (351) that aerify post (31) circumference and arrange, be connected through the company's of taking the pole between connection pad (352), install on mount pad (2) and be located electric telescopic handle (353) that aerify post (31), the flexible end of electric telescopic handle (353) is connected with its adjacent connection pad (352).

5. A bimetal pipe connecting device according to claim 3, wherein: connecting groove (10) are installed at the top of base (1), the bottom of shutoff board (33) articulates through the torsional spring pole has rotor plate (11), the bottom of shutoff board (33) is installed and is carried out spacing limiting plate (12) to rotor plate (11), rotor plate (11) are located connecting groove (10), slot (13) have been seted up on rotor plate (11), it is connected with rotary-pull post (14) to rotate on pull plate (322) to take, rotary-pull post (14) slide and run through base (1), connecting groove (10), install gib (15) behind slot (13).

6. A connecting device for bimetal pipes according to claim 5, characterized in that: magnets (16) are arranged on the opposite surfaces of the clamping strip (15) and the rotating plate (11), and the magnetism of the two magnets (16) is opposite.

7. A connecting device for bimetal pipes according to claim 5, characterized in that: the bottom of the rotating plate (11) is rotatably connected with a reducing roller (110).

8. The apparatus for connecting bimetallic pipes as in claim 1, wherein: an annular gasket (20) is installed on the installation seat (2), and the annular gasket (20) is tightly abutted to the bimetallic tube (4).

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