CN219600385U - Hydraulic pipe expander for heat shrinkage pipe - Google Patents

Abstract

The utility model belongs to the technical field of heat-shrinkable tube expansion, in particular to a heat-shrinkable tube hydraulic tube expander, which aims at the problems that when the existing hydraulic tube expander is used, heating and cooling are inconvenient to carry out on a tube fitting, the working time of processing expansion is long and the working efficiency is reduced. The PE pipe expansion device can conveniently control heating and cooling of the PE pipe, and can improve the working efficiency of expanding the PE pipe.

Description

Hydraulic pipe expander for heat shrinkage pipe

Technical Field

The utility model relates to the technical field of heat-shrinkable tube expansion, in particular to a hydraulic heat-shrinkable tube expander.

Background

In the production process of the polyethylene anti-corrosion pipe fitting, a transition connection area is included, a fire gun for a Polyethylene (PE) anti-corrosion heat-shrinkable pipe with a larger pipe diameter is baked and contracted on the outer surface of steel plastic, so that the time is longer, the apparent baking effect is smaller than the pipe diameter difference, and meanwhile, the cost of the larger pipe diameter is relatively higher; the hydraulic pipe expander is one special hydraulic expansion joint equipment for expanding connection of pipe and pipe plate in heat exchanger, condenser, high pressure heater and other equipment.

When the existing hydraulic pipe expander is used, the pipe fitting is inconvenient to heat and cool, the working time of processing expansion is long, and the working efficiency is reduced.

Disclosure of Invention

The utility model aims to solve the defects that the existing hydraulic pipe expander is inconvenient to heat and cool pipe fittings, long in processing and expansion working time and low in working efficiency when the existing hydraulic pipe expander is used.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a pyrocondensation pipe hydraulic pressure expander, including the casing, be provided with the fixed block in the casing, the through-hole has been seted up on the fixed block, be provided with the core bar in the through-hole, the operation hole has been seted up in the left side of casing, install a plurality of dead levers on the inner wall of through-hole, the dead lever links to each other with the core bar, the annotate liquid hole has been seted up on the core bar, the ring channel has been seted up in the outside of core bar, the outside cover of ring channel has high-pressure rubber circle, annotate liquid hole and ring channel and be linked together, the intercommunication has annotate liquid mechanism on annotating liquid hole, be provided with heating mechanism and cooling mechanism in the through-hole, the outside cover of core bar is equipped with the PE pipe, annotate and be provided with the manometer on the liquid hole.

Preferably, the heating mechanism comprises a heating plate, the inner wall of the through hole is provided with a containing groove, and the heating plate is connected with the inner wall of the containing groove.

Preferably, the cooling mechanism comprises an annular cooling cavity, the annular cooling cavity is arranged on the fixed block, a plurality of cooling pipes are arranged on the inner wall of the annular cooling cavity, a cold air unit is embedded in the top of the shell and is communicated with the annular cooling cavity, and the cooling pipes are of a bending structure and face to the position of the high-pressure rubber ring.

Preferably, the cold air unit comprises an air duct, the air duct is embedded at the top of the shell, a semiconductor refrigerator is embedded at the outer side of the air duct, a fan is arranged in the air duct, a plurality of air inlets are formed in the outer side of the air duct, and the air duct and the annular cooling cavity are communicated through the same pipeline.

Preferably, the liquid injection mechanism comprises a liquid pump and a liquid tank, wherein the liquid pump and the liquid tank are arranged on the outer side of the casing, an inlet of the liquid pump is communicated with the liquid tank, an outlet of the liquid pump is communicated with a liquid injection hole, a return pipe is communicated with the liquid injection hole, the return pipe is communicated with the liquid tank, and a valve is arranged on the return pipe.

In the utility model, the heat-shrinkable tube hydraulic tube expander has the beneficial effects that:

according to the scheme, the PE pipe is sleeved on the outer side of the core rod, electric energy can be converted into heat energy through the heating plate, the PE pipe can be heated, the PE pipe is softened, the liquid pump is started to send liquid into the liquid injection hole, then the liquid enters the annular groove, the liquid extrudes the high-pressure rubber ring, and the high-pressure rubber ring expands to extrude the PE pipe, so that the PE pipe is expanded; the semiconductor refrigerator and the fan are started, the semiconductor refrigerator refrigerates air in the air duct, the fan blows cold air into the annular cooling cavity through the pipeline, and then the PE pipe is cooled through the cooling pipes, so that the PE pipe can be rapidly cooled and shaped after being expanded, and the working efficiency is improved;

the PE pipe expansion device can conveniently control heating and cooling of the PE pipe, and can improve the working efficiency of expanding the PE pipe.

Drawings

FIG. 1 is a schematic structural view of a hydraulic heat-shrinkable tube expander according to the present utility model;

FIG. 2 is a schematic diagram of a part A of a hydraulic heat-shrinkable tube expander;

fig. 3 is a schematic perspective view of a high-pressure rubber ring according to the present utility model.

In the figure: 1. a housing; 2. an operation hole; 3. a fixed block; 4. a through hole; 5. an annular cooling cavity; 6. a cooling tube; 7. a pipe; 8. an air duct; 9. a fan; 10. an air inlet hole; 11. a semiconductor refrigerator; 12. a core bar; 13. a PE tube; 14. a receiving groove; 15. a heating plate; 16. an annular groove; 17. a limit groove; 18. a limit ring; 19. a high-pressure rubber ring; 20. a liquid injection hole; 21. a pressure gauge; 22. a return pipe; 23. a valve; 24. a liquid pump; 25. a liquid tank; 26. and a fixing rod.

Detailed Description

The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present embodiment, not all embodiments.

Example 1

Referring to fig. 1-3, a thermal shrinkage pipe hydraulic pipe expander comprises a casing 1, wherein a fixed block 3 is arranged in the casing 1, a through hole 4 is formed in the fixed block 3, a core rod 12 is arranged in the through hole 4, an operation hole 2 is formed in the left side of the casing 1, a plurality of fixed rods 26 are arranged on the inner wall of the through hole 4, the fixed rods 26 are connected with the core rod 12, a liquid injection hole 20 is formed in the core rod 12, an annular groove 16 is formed in the outer side of the core rod 12, a high-pressure rubber ring 19 is sleeved on the outer side of the annular groove 16, the liquid injection hole 20 is communicated with the annular groove 16, a liquid injection mechanism is communicated with the liquid injection hole 20, a heating mechanism and a cooling mechanism are arranged in the through hole 4, a PE pipe 13 is sleeved on the outer side of the core rod 12, and a pressure gauge 21 is arranged on the liquid injection hole 20; the pressure gauge 21 is provided to detect the pressure inside the pouring orifice 20.

In this embodiment, the heating mechanism includes a heating plate 15, the inner wall of the through hole 4 is provided with a containing groove 14, and the heating plate 15 is connected with the inner wall of the containing groove 14; the heating plate 15 can convert electric energy into heat energy to heat the PE pipe 13, so that the PE pipe 13 is enlarged conveniently.

In this embodiment, the cooling mechanism includes an annular cooling cavity 5, the annular cooling cavity 5 is provided on the fixed block 3, a plurality of cooling pipes 6 are provided on the inner wall of the annular cooling cavity 5, a cold air unit is embedded in the top of the casing 1, the cold air unit is communicated with the annular cooling cavity 5, and the cooling pipes 6 are of a curved structure and face to the position of the high-pressure rubber ring 19; the semiconductor refrigerator 11 refrigerates the air inside the air duct 8, the fan 9 blows cold air into the annular cooling cavity 5 through the pipeline 7, then the PE pipe 13 is cooled through the cooling pipes 6, the PE pipe 13 can be rapidly cooled and shaped after being expanded, the working efficiency is improved, the cold air unit comprises the air duct 8, the air duct 8 is embedded at the top of the shell 1, the semiconductor refrigerator 11 is embedded in the outer side of the air duct 8, the fan 9 is arranged in the air duct 8, the air inlets 10 are formed in the outer side of the air duct 8, and the same pipeline 7 is communicated between the air duct 8 and the annular cooling cavity 5.

In this embodiment, the liquid injection mechanism includes a liquid pump 24 and a liquid tank 25, the liquid pump 24 and the liquid tank 25 are both disposed at the outer side of the casing 1, an inlet of the liquid pump 24 is communicated with the liquid tank 25, an outlet of the liquid pump 24 is communicated with the liquid injection hole 20, a return pipe 22 is communicated with the liquid injection hole 20, the return pipe 22 is communicated with the liquid tank 25, and a valve 23 is disposed on the return pipe 22; the valve 23 is opened so that the liquid flows back into the liquid tank 25 and the high-pressure rubber ring 19 is reset.

When the PE pipe 13 is used, the PE pipe 13 is sleeved on the outer side of the core rod 12, electric energy can be converted into heat energy through the heating plate 15, the PE pipe 13 can be heated, the PE pipe 13 is softened, the liquid pump 24 is started to send liquid into the liquid injection hole 20, then the liquid enters the annular groove 16, the liquid extrudes the high-pressure rubber ring 19, the high-pressure rubber ring 19 expands to extrude the PE pipe 13, the PE pipe 13 is expanded, after the PE pipe 13 is expanded, the heating plate 15 is closed, the semiconductor refrigerator 11 and the fan 9 are started, the semiconductor refrigerator 11 refrigerates air in the air cylinder 8, the fan 9 blows cold air into the annular cooling cavity 5 through the pipeline 7, then the PE pipe 13 is cooled through the cooling pipes 6, the PE pipe 13 can be rapidly cooled and shaped after being expanded, the working efficiency is improved, the valve 23 is opened, the liquid flows back into the liquid tank 25, the high-pressure rubber ring 19 is reset, and the PE pipe 13 can be taken out.

Example two

The difference between the second embodiment and the first embodiment is that: the two sides of the high-pressure rubber ring 19 are provided with the limit rings 18, the inner wall of the annular groove 16 is provided with the limit grooves 17, the limit rings 18 are in sliding connection with the inner wall of the limit grooves 17, the high-pressure rubber ring 19 and the annular groove 16 can be sealed through the cooperation of the limit rings 18 and the limit grooves 17, the sealing effect is improved, all structures in the utility model can be used for selecting materials and lengths according to actual use conditions, the drawing is a schematic structure diagram, and the specific actual size can be properly adjusted.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art will be able to apply equally to the technical solution of the present utility model and the inventive concept thereof, within the scope of the present utility model.

Claims (6)

1. The utility model provides a pyrocondensation pipe hydraulic pressure expander, including casing (1), be provided with fixed block (3) in casing (1), its characterized in that, through-hole (4) have been seted up on fixed block (3), be provided with core bar (12) in through-hole (4), operating hole (2) have been seted up in the left side of casing (1), install a plurality of dead levers (26) on the inner wall of through-hole (4), dead lever (26) link to each other with core bar (12), annotate liquid hole (20) have been seted up on core bar (12), annular channel (16) have been seted up in the outside of core bar (12), the outside cover of annular channel (16) has high-pressure rubber circle (19), annotate liquid hole (20) and annular channel (16) are linked together, it has annotates liquid mechanism to feed through on annotate liquid hole (20), be provided with heating mechanism and cooling mechanism in through-hole (4), the outside cover of core bar (12) is equipped with PE pipe (13), annotate and be provided with manometer (21) on liquid hole (20).

2. The heat-shrinkable tube hydraulic tube expander as claimed in claim 1, wherein the heating mechanism comprises a heating plate (15), the inner wall of the through hole (4) is provided with a containing groove (14), and the heating plate (15) is connected with the inner wall of the containing groove (14).

3. The heat shrinkage tube hydraulic tube expander as claimed in claim 1, wherein the cooling mechanism comprises an annular cooling cavity (5), the annular cooling cavity (5) is arranged on the fixed block (3), a plurality of cooling tubes (6) are arranged on the inner wall of the annular cooling cavity (5), a cold air unit is embedded in the top of the casing (1), the cold air unit is communicated with the annular cooling cavity (5), and the cooling tubes (6) are of a bent structure and face to the position of the high-pressure rubber ring (19).

4. A heat shrinkage tube hydraulic tube expander according to claim 3, characterized in that the cold air unit comprises an air duct (8), the air duct (8) is embedded at the top of the casing (1), a semiconductor refrigerator (11) is embedded at the outer side of the air duct (8), a fan (9) is arranged in the air duct (8), a plurality of air inlets (10) are formed in the outer side of the air duct (8), and the same pipeline (7) is communicated between the air duct (8) and the annular cooling cavity (5).

5. The heat shrinkage tube hydraulic tube expander as claimed in claim 1, wherein the liquid injection mechanism comprises a liquid pump (24) and a liquid tank (25), the liquid pump (24) and the liquid tank (25) are arranged on the outer side of the casing (1), an inlet of the liquid pump (24) is communicated with the liquid tank (25), and an outlet of the liquid pump (24) is communicated with the liquid injection hole (20).

6. A heat shrinkage tube hydraulic tube expander as claimed in claim 5, wherein the liquid injection hole (20) is communicated with a return tube (22), the return tube (22) is communicated with a liquid tank (25), and a valve (23) is arranged on the return tube (22).