Drawing device with pipeline leakproof connecting structure

Abstract

The utility model provides a puller with a pipeline leakproof connecting structure, which belongs to the technical field of pullers and comprises a hydraulic pulling rod, a hexagonal sealing mounting head is arranged at the top end of the hydraulic pulling rod, a connecting seat is in threaded connection with the bottom of the hydraulic pulling rod, supporting rods are symmetrically hinged to the outer wall of the connecting seat in a triangular manner, and a stretching connecting rod is hinged to one end of each supporting rod. The bottom end of the hydraulic drawing rod is rotatably connected with a bearing seat, the bottom of the bearing seat is fixedly connected with an adjusting rod, the bottom of the adjusting rod is provided with an expansion film, the bottom of the expansion film is in sealed communication with an elastic sealing ring, and the side of the bottom of the elastic sealing ring is in sealed communication with an inflatable air bag. According to the puller with the pipeline leakage-proof connecting structure, the external inflation end is connected with the air inlet valve to inflate the inflation air bag, at the moment, the inflation air bag, the elastic sealing ring and the expansion film expand to block the inner wall of the pipeline, the pipeline is sealed, and liquid leakage is avoided when a flange of the pipeline is pulled out.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of puller, specifically relates to a puller with pipeline leakproof connecting structure. BACKGROUND

[0002] Part of the existing puller can only take out the damaged valve seat by rotating the internal screw rod manually, the process is very cumbersome, and the puller replacement efficiency is reduced, the puller disclosed by the application number "CN202320867050.4" is also a mature technology, the cooperation of the sliding block, the clamping block, the oval groove, the pulling block and other components effectively avoids the damage to the inner wall of the slurry pump pipeline in the traditional valve seat taking-out mode, effectively guarantees the service life of the device and reduces the daily burden of the staff, but the device still has the following defects: when the flange plate is pulled out, the stability of the puller pulling the clamping end is not high, one end cannot provide a stable support point, and when the pipeline flange is pulled out, liquid will leak with the sealing flange plate. SUMMARY

[0003] The utility model discloses a kind of pullers with pipeline leakproof connecting structure, to solve the problem that in prior art, the stability of the puller pulling the clamping end is not high, one end cannot provide a stable support point, and when the pipeline flange is pulled out, liquid will leak with the sealing flange plate.

[0004] To achieve the above object, the utility model provides the following technical scheme: including hydraulic pull rod, the top of the hydraulic pull rod is equipped with hexagonal sealing mounting head, the bottom of the hydraulic pull rod is connected with connecting seat by screw thread, the outer wall of the connecting seat is hingedly connected with support rod in triangular symmetry, one end of the support rod is hingedly connected with stretch connecting rod, one end of the stretch connecting rod is hingedly connected with grab hook rod, the bottom of the hydraulic pull rod is rotatably connected with bearing seat, the bottom of the bearing seat is fixedly connected with adjusting rod, the bottom of the adjusting rod is equipped with expansion film, the bottom of the expansion film is sealingly communicated with elastic sealing ring, the bottom of the elastic sealing ring is sealingly communicated with inflatable air bag on side.

[0005] In the puller with pipeline leakproof connecting structure of the utility model, the top of the expansion film is equipped with air pipe on one side, the top of the air pipe is sealingly communicated with air inlet valve, the air pipe is sealingly communicated with air release valve on one side.

[0006] In the present scheme, the top of the expansion film is equipped with air pipe on one side, the top of the air pipe is sealingly communicated with air inlet valve, and the air pipe is sealingly communicated with air release valve on one side.

[0007] The utility model discloses a kind of puller with pipeline anti-leakage connecting structure implementation scheme, the bearing seat four corners are hinged with upper limit rod, adjusting rod outside movable joint has adjusting ring, adjusting ring four corners are hinged with lower limit rod, the lower limit rod is hinged in upper limit rod middle part, the upper limit rod bottom is equipped with elastic non-slip pad.

[0008] In the present scheme, when adjusting rod is inserted into pipeline inner wall, adjusting ring is moved, lower limit rod pushes upper limit rod, so that upper limit rod expands to support column of pipeline side wall, and elastic non-slip pad is pressed against pipeline inner wall.

[0009] In the utility model, adjusting ring bottom is equipped with reset spring.

[0010] In the present scheme, reset spring rebounds to extrude adjusting ring to rise, and lower limit position automatically supports upper limit rod.

[0011] In the utility model, adjusting ring top two sides are hinged with buckle plate, adjusting rod two sides are distributed with a plurality of insertion slots, and buckle plate one end is hinged with insertion slot.

[0012] In the present scheme, when elastic non-slip pad is pressed against pipeline inner wall, buckle plate is inserted into insertion rod, and adjusting ring position is fixed.

[0013] In the utility model, catch hook rod bottom one side is equipped with anti-skid block.

[0014] In the present scheme, when catch hook rod hooks the pipeline flange to be shed, anti-skid block increases the contact surface with pipeline flange, so that catch hook rod is convenient for fixing pipeline flange side wall.

[0015] Compared with prior art, the utility model has the advantages that:

[0016] 1) adjusting rod is inserted into pipeline inner wall by being provided, reset spring rebounds to extrude adjusting ring to rise, lower limit rod pushes upper limit rod, so that upper limit rod expands to support column of pipeline side wall, and elastic non-slip pad is pressed against pipeline inner wall, automatically supports upper limit rod, from the width of pipeline inside, at this time, buckle plate is inserted into insertion rod, and adjusting ring position is fixed, to provide support point for hydraulic pull rod, improve the stability in the rotation process of hydraulic pull rod.

[0017] 2) external inflation end is connected with air inlet valve to inflate inflatable air bag by being provided, at this time, inflatable air bag is inflated with elastic sealing ring and inflation membrane, to block pipeline inner wall, to seal pipeline, to avoid liquid leakage when flange is pulled out. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 It is a structural schematic view of the present application;

[0020] Figure 2 It is a bearing seat structural schematic view of the present application;

[0021] Figure 3 It is one of bearing seat structural schematic views of the present application.

[0022] In the drawing: 1, hydraulic drawing rod; 2, hexagonal sealing mounting head; 3, connecting seat; 4, supporting rod; 5, stretching connecting rod; 6, grab hook rod; 7, bearing seat; 8, adjusting rod; 9, expansion film; 10, elastic sealing ring; 11, inflatable air bag; 12, air pipe; 13, air inlet valve; 14, air outlet valve; 15, upper limiting rod; 16, adjusting ring; 17, lower limiting rod; 18, elastic non-slip pad; 19, reset spring; 20, buckle plate; 21, insertion slot; 22, non-slip block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-3 The present application provides the following technical scheme: a drawing device with pipeline anti-leakage connection structure, comprising a hydraulic drawing rod 1, the top end of the hydraulic drawing rod 1 is provided with a hexagonal sealing mounting head 2, the bottom of the hydraulic drawing rod 1 is threadedly connected with a connecting seat 3, the outer wall of the connecting seat 3 is triangularly and symmetrically hinged with a supporting rod 4, one end of the supporting rod 4 is hinged with a stretching connecting rod 5, one end of the stretching connecting rod 5 is hinged with a grab hook rod 6, the bottom end of the hydraulic drawing rod 1 is rotationally connected with a bearing seat 7, the bottom of the bearing seat 7 is fixedly connected with an adjusting rod 8, the bottom of the adjusting rod 8 is provided with an expansion film 9, the bottom of the expansion film 9 is sealingly communicated with an elastic sealing ring 10, and the bottom side of the elastic sealing ring 10 is sealingly communicated with an inflatable air bag 11.

[0025] In a specific embodiment of the drawing device with pipeline anti-leakage connection structure, please refer to Figure 3The top of the inflation film 9 is provided with a vent pipe 12, the top end of the vent pipe 12 is sealed and communicated with an air inlet valve 13, and one side of the vent pipe 12 is sealed and communicated with an air outlet valve 14.

[0026] Please refer to Figure 3 : Insert the adjusting rod 8 into the inner wall of the pipeline, connect the outer inflation end with the air inlet valve 13, and inflate the inflation air bag 11. At this time, the inflation air bag 11 is inflated with the elastic sealing ring 10 and the inflation film 9 to block the inner wall of the pipeline, so as to seal the pipeline and prevent liquid leakage when the flange is removed.

[0027] Specifically, one embodiment of the puller with a pipeline leakage prevention connection structure is as follows: Figure 2 : The bearing seat 7 is hingedly connected with upper limit rods 15 at four corners, the adjusting rod 8 is movably connected with an adjusting ring 16, the adjusting ring 16 is hingedly connected with lower limit rods 17 at four corners, the lower limit rods 17 are hingedly connected to the middle part of the upper limit rods 15, and the bottom of the upper limit rods 15 is provided with elastic anti-skid pads 18.

[0028] Please refer to Figure 2 : After the adjusting rod 8 is inserted into the inner wall of the pipeline, the adjusting ring 16 is moved, the lower limit rod 17 pushes the upper limit rod 15, the upper limit rod 15 is expanded to support the pipeline side wall support column, and the elastic anti-skid pad 18 abuts against the inner wall of the pipeline.

[0029] Specifically, one embodiment of the puller with a pipeline leakage prevention connection structure is as follows: Figure 2 : The bottom of the adjusting ring 16 is provided with a reset spring 19.

[0030] Please refer to Figure 2 : The reset spring 19 is rebounded to press and squeeze the adjusting ring 16 to rise, and the lower limit automatically supports the upper limit rod 15.

[0031] Specifically, one embodiment of the puller with a pipeline leakage prevention connection structure is as follows: Figure 3 : The top of the adjusting ring 16 is hingedly connected with buckle plates 20 at two sides, a plurality of insertion slots 21 are arranged on the two sides of the adjusting rod 8, and one end of the buckle plate 20 is connected with the insertion slot 21.

[0032] Please refer to Figure 3 : After the elastic anti-skid pad 18 abuts against the inner wall of the pipeline, the buckle plate 20 is turned over and inserted into the insertion slot 21 to fix the position of the adjusting ring 16.

[0033] Specifically, one embodiment of the puller with a pipeline leakage prevention connection structure is as follows: Figure 1 : The bottom of the hook rod 6 is provided with anti-skid blocks 22.

[0034] Please refer to Figure 1When the hook rod 6 hooks the flange of the pipeline to be removed, the contact area with the flange of the pipeline is increased by the anti-skid block 22, so that the hook rod 6 can fix the side wall of the flange of the pipeline.

[0035] The utility model provides a kind of puller with pipeline leak-proof connecting structure, and specific use mode is as follows: adjusting rod 8 is inserted into pipeline inner wall, and by reset spring 19 rebound extrusion adjusting ring 16 rises, lower limit rod 17 promotes upper limit rod 15, so that upper limit rod 15 expands and supports column of pipeline side wall, and elastic non-slip pad 18 is resisted to pipeline inner wall, and upper limit rod 15 is automatically supported up, at this time, overturning buckle plate 20 is inserted into plug rod 21, and the position of adjusting ring 16 is fixed, to provide support point for hydraulic pull rod 1, improve the stability of hydraulic pull rod 1 in rotation process, connect external inflation end with inlet valve 13 to inflate inflatable air bag 11, at this time, inflatable air bag 11 and elastic sealing ring 10 and inflatable membrane 9 are inflated and blocked to pipeline inner wall, and pipeline is sealed, avoid liquid leakage when flange is removed, and hydraulic pull rod 1 rotates and drives connecting seat 3 to move and drive pull link 5 to make hook rod 6 pull external pipeline flange.

[0036] Finally, it should be noted that: the above only for preferred embodiment of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical feature. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A puller with a pipe leak-proof connection structure, comprising a hydraulic puller rod (1), characterized in that: The hydraulic drawing rod (1) top is equipped with hexagonal sealing mounting head (2), the hydraulic drawing rod (1) bottom is connected with connecting seat (3) by screw thread, the connecting seat (3) outer wall is hinged with support rod (4) in triangular symmetry, one end of support rod (4) is hinged with stretch connecting rod (5), one end of stretch connecting rod (5) is hinged with grab hook rod (6), the bottom of hydraulic drawing rod (1) is rotatably connected with bearing seat (7), the bottom of bearing seat (7) is fixedly connected with adjusting rod (8), the bottom of adjusting rod (8) is equipped with expansion film (9), the bottom of expansion film (9) is sealedly communicated with elastic sealing ring (10), the bottom of elastic sealing ring (10) is sealedly communicated with inflating air bag (11).

2. The drawbead with a pipe leak-proof connection structure according to claim 1, characterized in that: The top of expansion film (9) is equipped with air pipe (12) on one side, the top end of air pipe (12) is sealedly communicated with air inlet valve (13), one side of air pipe (12) is sealedly communicated with air release valve (14).

3. The drawbead with a pipe leak-proof connection structure according to claim 1, characterized in that: The four corners of bearing seat (7) are hinged with upper limiting rod (15), the outside of adjusting rod (8) is movably connected with adjusting ring (16), the four corners of adjusting ring (16) are hinged with lower limiting rod (17), the lower limiting rod (17) is hinged in the middle of upper limiting rod (15), the bottom of upper limiting rod (15) is equipped with elastic non-slip pad (18).

4. The drawbead with a pipe leak-proof connection structure according to claim 3, characterized in that: The bottom of adjusting ring (16) is equipped with return spring (19).

5. The drawbead with a pipe leak-proof connection structure according to claim 3, characterized in that: The top of adjusting ring (16) is hinged with buckle plate (20) on both sides, a plurality of insertion slots (21) are formed on both sides of adjusting rod (8), one end of buckle plate (20) is hingedly connected with insertion slot (21).

6. The drawbead with a pipe leak-proof connection structure according to claim 1, characterized in that: The bottom of grab hook rod (6) is equipped with anti-skid block (22) on one side.

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