CN113007411A

CN113007411A - Valve pipeline butt joint is with preventing leaking device

Info

Publication number: CN113007411A
Application number: CN202110370550.2A
Authority: CN
Inventors: 曹占魁
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-06-22

Abstract

The invention discloses a valve pipeline butt joint leakage-proof device, which comprises an I-shaped underframe, a pipeline body and a valve body, wherein the middle part of the top end of the I-shaped underframe is fixedly provided with a rotating seat, the middle part of the top end of the rotating seat is rotatably provided with an adjusting mechanism, the outer sides of the pipeline body and the valve body are respectively provided with a clamping assembly, a leakage-proof connecting piece is detachably arranged between the pipeline body and the valve body through a flange, and the outer side of the leakage-proof connecting piece is provided with two groups of clamping assemblies which are symmetrically distributed. The guiding butt joint of different height angles between the follow-up pipeline body, the valve body and the anti-leakage connecting piece is convenient to fix.

Description

Valve pipeline butt joint is with preventing leaking device

Technical Field

The invention relates to the technical field of valve pipelines, in particular to a leakage-proof device for butt joint of valve pipelines.

Background

The valve is a control element in a fluid pipeline system, mainly has the functions of isolating equipment and the pipeline system, adjusting flow, preventing backflow, adjusting and discharging pressure, can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and is usually fixedly connected with a pipeline, and a leakage-proof device is usually added at the joint of the valve and the pipeline in order to prevent the leakage of the media in the pipeline after the valve and the pipeline are connected;

however, when the existing anti-leakage device is used for connecting a valve and a pipeline, most of the devices are manually held by hands to be butted with the valve, certain guidance is lacked during connection, so that the stability is poor, the anti-leakage device and the flexible and accurate butt joint of any angle between the pipeline and the valve are inconvenient to prevent leakage between the pipeline and the valve after butt joint, and therefore the anti-leakage device for butt joint of the valve and the pipeline is provided for solving the problems.

Disclosure of Invention

The present invention is directed to a valve pipe butt joint leakage prevention device, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a valve pipeline butt joint is with preventing leaking device, includes I type chassis, pipeline body and valve body, the top middle part fixed mounting of I type chassis has the rotation seat, the top middle part rotation of rotating the seat is equipped with adjustment mechanism, the outside of pipeline body and valve body all is equipped with the centre gripping subassembly, through flange demountable installation between pipeline body and the valve body prevent leaking the connecting piece, the outside of preventing leaking the connecting piece is equipped with two sets of centre gripping subassemblies that are the symmetric distribution, the multiunit centre gripping subassembly slip joint is on adjustment mechanism's top.

Preferably, the lifting support rods are inserted into two sides of the I-shaped underframe through threads, two groups of supporting bulges which are symmetrically distributed are fixedly arranged on two sides of the bottom end of the I-shaped underframe, and moving balls are movably clamped in the supporting bulges.

Preferably, adjustment mechanism includes top rail and lifter, the bottom middle part of top rail rotates installs U type frame, the bottom fixed mounting of top rail has semi-ring frame, semi-ring frame is the semicircle ring structure, semi-ring frame slip joint is in U type frame, the interior lower wall activity card of U type frame is equipped with the regulation ball, the outer wall of semi-ring frame is seted up and is assisted the commentaries on classics recess that uses with the cooperation of regulation ball, and adjusts the outer wall of ball and assists the inner wall contact of changeing the recess, the lower extreme screw thread is inserted and is equipped with spacing bolt in one side of U type frame, the one end of spacing bolt and the outer wall in close contact with of semi-ring frame, angle scale mark is carved with to one side of semi-ring frame, the bottom of lifter is passed through damping bearing and is rotated and is installed in the top middle part of rolling seat, the output of lifter and the bottom middle part fixed mounting of U type frame.

Preferably, the clamping assembly comprises a clamping outer frame, the clamping outer frame is of a hollow structure, a driving shaft is movably inserted in the middle of the top end of the clamping outer frame, rotary through grooves are formed in two sides of the top end of the clamping outer frame, special-shaped clamping rods are rotatably mounted in the rotary through grooves, two groups of special-shaped clamping rods are of a symmetrical distribution structure, an arc-shaped base is fixedly mounted at the top end of the driving shaft, a clamping cylinder is fixedly mounted in the middle of the lower surface of the inner wall of the clamping outer frame, a guide inserting rod is fixedly mounted at the bottom end of the driving shaft, the bottom of the guide inserting rod is movably clamped in the clamping cylinder, a reset spring is fixedly mounted between the bottom end of the guide inserting rod and the lower surface of the inner wall of the clamping cylinder, clamping ring grooves matched with the special-shaped clamping rods are formed in the bottom of the, the clamping outer frame is connected in the top rail in a sliding and clamping mode through a sliding block;

the pipeline body is movably clamped between the two groups of special-shaped clamping rods, and the outer wall of the pipeline body is in contact with the top wall of the arc-shaped base.

Preferably, the connection mode of the leakage-proof connecting piece and the clamping assembly is the same as that of the pipeline body and the clamping assembly.

Preferably, the connection mode of the valve body and the clamping assembly is the same as that of the pipeline body and the clamping assembly.

Preferably, the anti-leakage connecting piece comprises a connecting pipe and an inner connecting ring frame, the inner connecting ring frame is provided with two groups which are symmetrically distributed, the two groups of inner connecting ring frames are respectively detachably clamped on the inner walls of the pipeline body and the valve body, inner inserting pipes are fixedly clamped on two sides of the connecting pipe, the two groups of inner inserting pipes are respectively movably clamped in the pipeline body and the valve body, the opposite ends of the two groups of inner connecting ring frames are respectively provided with a first sealing groove corresponding to the sealing rings, the inner wall of each first sealing groove is fixedly provided with a first sealing rubber ring, the sealing rings are movably clamped in the corresponding first sealing grooves and are in tight contact with the outer wall of the corresponding first sealing rubber ring, the two sides of the connecting pipe are respectively integrally provided with a convex ring, and the opposite sides of the pipeline body and the valve body are respectively provided with a second sealing groove corresponding to the convex ring, the equal fixed mounting of inner wall of the sealed recess of second has the sealed ring of gluing of second, bulge loop activity joint in the sealed recess of second that corresponds and with the sealed outer wall in close contact with of the sealed ring of gluing of second that corresponds, flange demountable installation is passed through on pipeline body, valve body at the both ends of connecting pipe.

Preferably, the two sides of the outer surface of the connecting pipe are integrally provided with auxiliary fixing plates which are symmetrically distributed, and one side of each auxiliary fixing plate is provided with auxiliary fixing bolts in a threaded insertion mode.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the adjusting mechanism is arranged, the lifting rod is started to drive the U-shaped frame and the top rail to lift, so that the height position of the top rail can be flexibly adjusted, the top rail is driven to perform damping type horizontal rotation through damping type horizontal rotation of the lifting rod, and the top rail can vertically rotate in the U-shaped frame, so that the rotation flexibility of the top rail is improved, and the subsequent guide butt joint fixing of different height angles among the pipeline body, the valve body and the anti-leakage connecting piece is facilitated.

2. Through setting up the centre gripping subassembly, carry out supplementary centre gripping to pipeline body and valve body and prevent letting out the connecting piece, improved pipeline body and valve body and prevent letting out the stability when connecting piece butt joint to make things convenient for the butt joint of pipeline body and preventing letting out connecting piece and valve body more.

3. Through setting up the leakage-proof connecting piece, can realize the pipeline body and prevent that the two-stage between leakage-proof connecting piece and the valve body is sealed, effectively prevent the leakage of junction between pipeline body and the valve body, and assist spacingly to pipeline body, valve body through assisting solid bolt, prevent that pipeline body, valve body are connected the back and to breaking away from to improved the stability behind pipeline body, the valve body connection, further prevent the leakage of junction between pipeline body and the valve body.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structural connection between the I-shaped chassis and the adjusting mechanism of the present invention;

FIG. 3 is a schematic view of the structural connection of the gripping assembly and the pipe body of the present invention;

FIG. 4 is a schematic view of the structural connection of the pipe body, the leak-proof connector and the valve body according to the present invention;

FIG. 5 is another schematic view of the connection of the pipe body, the leak-proof connector and the valve body according to the present invention.

In the figure: 1. an I-shaped chassis; 2. a rotating seat; 3. an adjustment mechanism; 4. a clamping assembly; 5. a pipe body; 6. a leak-proof connector; 7. a valve body; 11. lifting the supporting rod; 12. a support boss; 13. a movable ball; 31. a rail is supported; 32. a U-shaped frame; 33. a semi-ring frame; 331. auxiliary turning of the groove; 332. angle scale lines; 34. a limit bolt; 35. adjusting the ball; 36. a lifting rod; 41. clamping the outer frame; 411. rotating the through groove; 42. a drive shaft; 421. a snap ring groove; 43. a special-shaped clamping rod; 44. an arc-shaped base; 45. clamping the cylinder; 46. a guide insertion rod; 461. a return spring; 501. a second seal groove; 51. a second sealing rubber ring; 61. a connecting pipe; 611. a convex ring; 62. inserting a tube; 63. a seal ring; 64. an inner connecting ring frame; 641. a first seal groove; 642. a first sealant ring; 65. auxiliary fixing plates; 66. and (5) auxiliary fixing of the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a valve pipeline butt joint is with preventing leaking device, including I type chassis 1, pipeline body 5 and valve body 7, I type chassis 1's top middle part fixed mounting has rotation seat 2, the top middle part of rotating seat 2 rotates and is equipped with adjustment mechanism 3, the outside of pipeline body 5 and valve body 7 all is equipped with centre gripping subassembly 4, there is anti-leakage connecting piece 6 through flange demountable installation between pipeline body 5 and the valve body 7, the outside of preventing leakage connecting piece 6 is equipped with two sets of centre gripping subassemblies 4 that are the symmetric distribution, the slip joint of multiunit centre gripping subassembly 4 is on adjustment mechanism 3's top.

The equal screw thread in both sides of I type chassis 1 is inserted and is equipped with lift support bar 11, the equal fixed mounting in bottom both sides of I type chassis 1 has two sets of support protrusion 12 that are the symmetric distribution, equal activity card is equipped with action ball 13 in the support protrusion 12, multiunit action ball 13 through the setting, be convenient for whole prevent leaking the device and carry out nimble removal subaerial, thereby the flexibility of preventing leaking the device has been improved, and twist lift support bar 11 through the use tool spiro union, until 11 bottom of lift support bar and ground contact, through the frictional force between lift support bar 11 and the ground, prevent to leak the device and carry out the displacement, thereby the stability after preventing leaking the device position removal has been improved.

The adjusting mechanism 3 comprises a top rail 31 and a lifting rod 36, a U-shaped frame 32 is rotatably installed at the middle part of the bottom end of the top rail 31, the top rail 31 can flexibly and vertically rotate at the upper end of the U-shaped frame 32, a semi-ring frame 33 is fixedly installed at the bottom end of the top rail 31, the semi-ring frame 33 is in a semi-ring structure, the semi-ring frame 33 is slidably clamped in the U-shaped frame 32, wherein the circle center of the semi-ring frame 33 and the rotating shafts of the top rail 31 and the U-shaped frame 32 are at the same vertical position, when the top rail 31 vertically rotates, the semi-ring frame 33 is driven to vertically rotate in the U-shaped frame 32, an adjusting ball 35 is movably clamped at the inner lower wall of the U-shaped frame 32, an auxiliary rotating groove 331 matched with the adjusting ball 35 is formed in the outer wall of the semi-ring frame 33, and the outer wall of the adjusting ball 35 is contacted with the inner wall of the auxiliary rotating groove 331, so that the stability of the vertical rotation of the semi, thereby more facilitating the vertical rotation of the semi-ring frame 33 and the top rail 31, the lower end thread of one side of the U-shaped frame 32 is inserted with the limit bolt 34, one end of the limit bolt 34 is in close contact with the outer wall of the semi-ring frame 33, the angle fixation after the vertical rotation of the semi-ring frame 33 is realized, one side of the semi-ring frame 33 is carved with the angle scale mark 332, wherein, the angle scale mark 332 and the scale mark on the protractor are distributed the same, so that the user can conveniently observe the vertical rotation angle of the semi-ring frame 33, so that the semi-ring frame 33 can vertically rotate with a precise angle, the bottom of the lifting rod 36 is rotatably installed at the middle part of the top end of the rotating seat 2 through the damping bearing, the lifting rod 36 can realize the damping type horizontal rotation on the rotating seat 2, thereby driving the top rail 31 to perform the damping type horizontal rotation, further effectively improving the rotation flexibility of the top rail 31, facilitating the butt joint fixation of the follow-up pipeline body, the output of lifter 36 and the bottom middle part fixed mounting of U type frame 32 drive U type frame 32 and head rail 31 through starting lifter 36 and go up and down to be convenient for adjust the high position of head rail 31 in a flexible way, further promoted head rail 31 pivoted flexibility, the not co-altitude butt joint of follow-up pipeline body 5 and valve body 7 and prevent letting out 6 connecting pieces of being convenient for is fixed.

The clamping assembly 4 comprises a clamping outer frame 41, the clamping outer frame 41 is of a hollow structure, a driving shaft 42 is movably inserted in the middle of the top end of the clamping outer frame 41, the driving shaft 42 can be stably lifted on the clamping outer frame 41, rotary through grooves 411 are respectively formed in both sides of the top end of the clamping outer frame 41, special-shaped clamping rods 43 are respectively rotatably installed in the rotary through grooves 411, the two groups of special-shaped clamping rods 43 are symmetrically distributed, the two groups of special-shaped clamping rods 43 can vertically rotate in the corresponding rotary through grooves 411, an arc-shaped base 44 is fixedly installed at the top end of the driving shaft 42, a clamping cylinder 45 is fixedly installed in the middle of the lower surface of the inner wall of the clamping outer frame 41, a guide inserting rod 46 is fixedly installed at the bottom end of the driving shaft 42, the bottom of the guide inserting rod 46 is movably clamped in the clamping cylinder 45 and lifted in the clamping cylinder 45 through the guide inserting rod 46, the lifting stability of the driving shaft 42 is effectively improved, the bottom of the outer surface of the driving shaft 42 is provided with a clamping ring groove 421 matched with the special-shaped clamping rods 43 for use, opposite sides of the lower parts of the two groups of special-shaped clamping rods 43 are positioned in the clamping ring groove 421, edges of the clamping ring groove 421 are of an arc structure, when the driving shaft 42 descends, the lower parts of the two groups of special-shaped clamping rods 43 are slowly separated from the clamping ring groove 421 and synchronously expanded outwards, so that the upper parts of the two groups of special-shaped clamping rods 43 are synchronously retracted inwards, the clamping outer frame 41 is connected in the top rail 31 in a sliding and clamping mode through a sliding block, and a plurality of groups; pipeline body 5 activity joint is between two sets of special-shaped clamping bars 43, the outer wall of pipeline body 5 and arc base 44's roof contact, in use, place pipeline body 5 on arc base 44 and press down pipeline body 5, at this moment, pipeline body 5 extrusion arc base 44 descends, drive shaft 42 steady decline, the upper portion of two sets of special-shaped clamping bars 43 contracts in step and the inner wall laminating of pipeline body 5, the centre gripping is assisted to pipeline body 5, stability when having improved pipeline body 5 butt joint, thereby make things convenient for pipeline body 5 more and prevent leaking the butt joint of connecting piece 6 and valve body 7.

The connection mode of the anti-leakage connecting piece 6 and the clamping component 4 is the same as that of the pipeline body 5 and the clamping component 4; the connection mode of valve body 7, centre gripping subassembly 4 is the same with the connection mode of pipeline body 5, centre gripping subassembly 4, uses the same to keep away from, uses centre gripping subassembly 4 to assist the centre gripping to prevent leaking connecting piece 6 and valve body 7 to improve pipeline body 5 and prevent leaking the stability when connecting piece 6 and valve body 7 dock.

The anti-leakage connecting piece 6 comprises a connecting pipe 61 and an inner connecting ring frame 64, the inner connecting ring frame 64 is provided with two groups which are symmetrically distributed, the two groups of inner connecting ring frames 64 are respectively detachably clamped on the inner walls of the pipeline body 5 and the valve body 7, the two sides of the connecting pipe 61 are respectively fixedly clamped with an inner inserting pipe 62, the two groups of inner inserting pipes 62 are respectively and movably clamped in the pipeline body 5 and the valve body 7, the back ends of the two groups of inner inserting pipes 62 are respectively and fixedly connected with a sealing ring 63, the opposite ends of the two groups of inner connecting ring frames 64 are respectively provided with a first sealing groove 641 corresponding to the sealing ring 63, the inner wall of the first sealing groove 641 is respectively and fixedly provided with a first sealing rubber ring 642, the sealing ring 63 is movably clamped in the corresponding first sealing groove 641 and is tightly contacted with the outer wall of the corresponding first sealing rubber ring 642, the sealing between the inner inserting pipes 62 at the two sides and the corresponding inner connecting ring frames 64 is realized, thereby effectively, effectively prevent the leakage of junction between pipeline body 5 and the valve body 7, the equal integrative type that is in both sides of connecting pipe 61 has bulge loop 611, the sealed recess 501 of second that corresponds with bulge loop 611 is all seted up to the opposite side of pipeline body 5 and valve body 7, the equal fixed mounting of the inner wall of the sealed recess 501 of second has the sealed ring 51 of gluing of second, bulge loop 611 activity joint in the sealed recess 501 of second that corresponds and with the sealed ring 51 outer wall in close contact with of second that corresponds, realize pipeline body 5 and prevent letting out the second grade between connecting piece 6 and the valve body 7 sealed, further effectively prevent the leakage of junction between pipeline body 5 and the valve body 7, flange demountable installation is passed through at pipeline body 5 in the both ends of connecting pipe 61, on the valve body 7.

The equal integrative type that is in surface both sides of connecting pipe 61 has the assistance solid board 65 that is the symmetric distribution, the equal screw thread in one side of assisting solid board 65 is inserted and is equipped with and assists solid bolt 66, wherein, after carrying out the butt joint between pipeline body 5 and leak-proof connecting piece 6 and the valve body 7, the inner surface of assisting solid bolt 66 corresponds respectively and pipeline body 5, the inner contact of valve body 7 flange position department, pipeline body 5, valve body 7 is spacing, prevent pipeline body 5, valve body 7 connects the back and moves, thereby pipeline body 5, valve body 7 assists spacingly, prevent pipeline body 5, valve body 7 connects the back and breaks away from, thereby pipeline body 5 has been improved, the stability after valve body 7 connects, further prevent the leakage of junction between pipeline body 5 and the valve body 7.

The working principle is as follows: the invention relates to a leakage-proof device for butt joint of valve pipelines, which can be used for the leakage-proof stable butt joint between pipelines and valves at different angles, when in use, the whole leakage-proof device is flexibly moved through a plurality of groups of action balls 13 to move to the position of a valve body 7 to be butt jointed, then a limit bolt 34 is screwed to enable the limit bolt 34 to be separated from the contact of a semi-ring frame 33, a lifting rod 36 is started to drive a U-shaped frame 32 and a top rail 31 to lift, the height position of the top rail 31 is flexibly adjusted, so as to adjust the height positions of a plurality of groups of clamping components 4, the top rail 31 is rotated vertically and horizontally to flexibly adjust the angle of the top rail 31 until an arc-shaped base 44 in one group of the clamping components 4 is contacted with the outer wall of the valve body 7, and the valve body 7 presses the arc-shaped base 44 to drive a corresponding driving shaft 42 to stably descend, the upper parts of the two groups of special-shaped clamping rods 43 are synchronously retracted to be attached to the inner wall of the valve body 7 to perform auxiliary clamping on the valve body 7, at the moment, the limit bolts 34 are required to be screwed to limit the angle of the semi-ring frame 33, at the moment, the rest clamping assemblies 4 and the clamping assemblies 4 used for clamping the valve body 7 are in the same straight line position, so that the subsequent pipeline body 5 is conveniently in sliding butt joint with the valve body 7 through the anti-leakage connecting piece 6, then, the anti-leakage connecting piece 6 is clamped in the two corresponding groups of clamping assemblies 4 in an auxiliary mode according to the same principle, the anti-leakage connecting piece 6 is moved in a guiding mode, one group of inner inserting tubes 62 are movably clamped in the valve body 7 until the sealing rings 63 are movably clamped in the corresponding first sealing grooves 641 and are tightly contacted with the outer walls of the corresponding first sealing rubber rings 642, and sealing between the inner inserting tubes 62 and the corresponding, thereby effectively realizing the primary sealing between the anti-leakage connecting piece 6 and the valve body 7, and at the same time, the convex ring 611 is movably clamped in the corresponding second sealing groove 501 and is tightly contacted with the outer wall of the corresponding second sealing rubber ring 51, realizing the secondary sealing between the anti-leakage connecting piece 6 and the valve body 7, effectively preventing the leakage of the joint between the anti-leakage connecting piece 6 and the valve body 7, the connection between the anti-leakage connecting piece 6 and the valve body 7 is carried out through the flange, the corresponding auxiliary fixing bolt 66 is screwed, the outer surface of the inner end of the auxiliary fixing bolt 66 is contacted with the inner end of the flange position of the valve body 7, then, the guide butt joint between the pipeline body 5 and the anti-leakage connecting piece 6 is carried out according to the same principle, thereby effectively realize effectively preventing leaking the butt joint between pipeline body 5, the valve body 7, and improved the stability after pipeline body 5, the valve body 7 are connected.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a valve pipeline butt joint is with preventing leaking device, includes I type chassis (1), pipeline body (5) and valve body (7), its characterized in that: the utility model discloses a pipeline, including I type chassis (1), the top middle part fixed mounting of I type chassis (1) has rotation seat (2), the top middle part of rotating seat (2) rotates and is equipped with adjustment mechanism (3), the outside of pipeline body (5) and valve body (7) all is equipped with centre gripping subassembly (4), have through flange demountable installation between pipeline body (5) and the valve body (7) and prevent leaking connecting piece (6), the outside of preventing leaking connecting piece (6) is equipped with two sets of centre gripping subassemblies (4) that are symmetric distribution, multiunit centre gripping subassembly (4) slip joint is on the top of adjustment mechanism (3).

2. A leak-proof apparatus for valve tubing docking, as recited in claim 1, wherein: the lifting support rod (11) is inserted into two sides of the I-shaped underframe (1) in a threaded manner, two groups of supporting bulges (12) which are symmetrically distributed are fixedly mounted on two sides of the bottom end of the I-shaped underframe (1), and moving balls (13) are movably clamped in the supporting bulges (12).

3. A leak-proof apparatus for valve tubing docking, as recited in claim 1, wherein: the adjusting mechanism (3) comprises a top rail (31) and a lifting rod (36), a U-shaped frame (32) is rotatably installed in the middle of the bottom end of the top rail (31), a semi-ring frame (33) is fixedly installed at the bottom end of the top rail (31), the semi-ring frame (33) is of a semi-ring structure, the semi-ring frame (33) is slidably clamped in the U-shaped frame (32), an adjusting ball (35) is movably clamped at the inner lower wall of the U-shaped frame (32), an auxiliary rotating groove (331) matched with the adjusting ball (35) is formed in the outer wall of the semi-ring frame (33), the outer wall of the adjusting ball (35) is in contact with the inner wall of the auxiliary rotating groove (331), a limiting bolt (34) is inserted into the lower end thread of one side of the U-shaped frame (32), one end of the limiting bolt (34) is in close contact with the outer wall of the semi-ring frame (33), an angle scale mark (332) is carved on one side of the semi, the bottom of the lifting rod (36) is rotatably installed in the middle of the top end of the rotating seat (2) through a damping bearing, and the output end of the lifting rod (36) and the middle of the bottom end of the U-shaped frame (32) are fixedly installed.

4. A leak-proof apparatus for valve tubing docking, as recited in claim 3, wherein: the clamping assembly (4) comprises a clamping outer frame (41), the clamping outer frame (41) is of a hollow structure, a driving shaft (42) is movably inserted in the middle of the top end of the clamping outer frame (41), rotary penetrating grooves (411) are formed in two sides of the top end of the clamping outer frame (41), special-shaped clamping rods (43) are rotatably mounted in the rotary penetrating grooves (411), two groups of special-shaped clamping rods (43) are symmetrically distributed, an arc-shaped base (44) is fixedly mounted at the top end of the driving shaft (42), a clamping cylinder (45) is fixedly mounted in the middle of the lower surface of the inner wall of the clamping outer frame (41), a guide inserting rod (46) is fixedly mounted at the bottom end of the driving shaft (42), the bottom of the guide inserting rod (46) is movably clamped in the clamping cylinder (45), and a reset spring (461) is fixedly mounted between the bottom end of the guide inserting rod (46) and the lower surface of the, the bottom of the outer surface of the driving shaft (42) is provided with clamping ring grooves (421) matched with the special-shaped clamping rods (43) for use, opposite sides of the lower parts of the two groups of special-shaped clamping rods (43) are located in the clamping ring grooves (421), and the clamping outer frame (41) is clamped in the top rail (31) in a sliding mode through a sliding block;

the pipeline body (5) is movably clamped between the two groups of special-shaped clamping rods (43), and the outer wall of the pipeline body (5) is in contact with the top wall of the arc-shaped base (44).

5. A leak-proof apparatus for valve tubing docking, as recited in claim 4, wherein: the connection mode of the anti-leakage connecting piece (6) and the clamping assembly (4) is the same as that of the pipeline body (5) and the clamping assembly (4).

6. A leak-proof apparatus for valve tubing docking, as recited in claim 4, wherein: the connection mode of the valve body (7) and the clamping assembly (4) is the same as that of the pipeline body (5) and the clamping assembly (4).

7. A leak-proof apparatus for valve tubing docking, as recited in claim 1, wherein: the anti-leakage connecting piece (6) comprises a connecting pipe (61) and an inner connecting ring frame (64), the inner connecting ring frame (64) is provided with two groups which are symmetrically distributed, the two groups of inner connecting ring frames (64) are respectively detachably clamped on the inner walls of a pipeline body (5) and a valve body (7), inner inserting pipes (62) are fixedly clamped on two sides of the connecting pipe (61), the two groups of inner inserting pipes (62) are respectively movably clamped in the pipeline body (5) and the valve body (7), sealing rings (63) are fixedly connected on opposite ends of the two groups of inner inserting pipes (62), first sealing grooves (641) corresponding to the sealing rings (63) are respectively formed in opposite ends of the two groups of inner connecting ring frames (64), first sealing rubber rings (642) are fixedly arranged on the inner walls of the first sealing grooves (641), and the sealing rings (63) are movably clamped in the corresponding first sealing grooves (641) and are in tight contact with the outer walls of the corresponding first sealing rubber rings (642), the equal integrative type that is in both sides of connecting pipe (61) has bulge loop (611), the sealed recess of second (501) that corresponds with bulge loop (611) is all seted up to the opposite side of pipeline body (5) and valve body (7), the equal fixed mounting of inner wall of the sealed recess of second (501) has the sealed ring of gluing of second (51), bulge loop (611) activity joint is in the sealed recess of second (501) that correspond and with the sealed ring of gluing of second (51) outer wall in close contact with that corresponds, the both ends of connecting pipe (61) are passed through flange demountable installation on pipeline body (5), valve body (7).

8. A leak prevention apparatus for valve tubing docking as recited in claim 7, wherein: the outer surface both sides of connecting pipe (61) all integrative type of being the symmetry distributes assists solid board (65), it has supplementary solid bolt (66) to assist the equal screw thread of one side of solid board (65) to insert.