CN219955059U - Thermal insulation assembly for epoxy resin material injection pipeline and material injection system thereof - Google Patents

Abstract

An insulation component for an epoxy resin injection pipeline and an injection system thereof relate to the technical field of epoxy resin injection, and the technical scheme is as follows: including the body, from left to right cover in proper order on the body is equipped with third heat preservation subassembly, first heat preservation subassembly and second heat preservation subassembly, first heat preservation subassembly is connected with conduction oil heating cabinet through first inlet pipe. The beneficial effects of this technical scheme are: through the cooperation between first heat preservation subassembly, second heat preservation subassembly and the third heat preservation subassembly, guarantee that epoxy's temperature is in the scope about 60 ℃ always, keep better mobility, improve epoxy's conveying efficiency, make full use of the heat of conduction oil simultaneously, reduce the loss of conduction oil temperature.

Description

Thermal insulation assembly for epoxy resin material injection pipeline and material injection system thereof

Technical Field

The utility model relates to the technical field of epoxy resin injection, in particular to a heat preservation component for an epoxy resin injection pipeline and an injection system thereof.

Background

The epoxy resin has the advantages of small shrinkage rate of the cured product, stable size of the formed part, excellent electrical performance and better impact resistance and expansion resistance, and is mainly applied to insulating casting of electronic and electric products.

The epoxy resin, the curing agent and the silicon micropowder are conveyed into the material injection tank after being mixed and conveyed into the material injection tank through the pipeline, the fluidity of the epoxy resin is the best at about 60 ℃, the temperature of the epoxy resin is reduced, the fluidity is worse, after the epoxy resin is conveyed into the material injection tank for forming, the pressure is maintained for 20-25 minutes, so that the pipeline is permanently exposed in the air, when the external temperature is lower, the temperature of the epoxy resin in the pipeline is also reduced, the epoxy resin is solidified, the later-stage conveying is inconvenient, the conveying efficiency is reduced, the pipeline is required to be heated when the epoxy resin is conveyed, and the electric tracing band is covered on the outer surface of the whole pipeline when the epoxy resin is heated.

But epoxy just goes out the temperature when the material filling jar higher and is connected heat preservation effectual with the material filling jar to the pipeline is according to the scene environment difference, and length is generally 2-2.5 m, and epoxy's middle part and afterbody temperature cooling are quicker in the transportation process, and pipeline heat preservation is generally the cover electric tracing area now, but epoxy can not be with the absorption of the whole maximization of heat can lead to the heat loss, if just set up middle part and afterbody, can lead to the head temperature to reduce like in chilly winter, and the pipeline adopts the rubber hose now simultaneously, and inside epoxy is difficult to clear up after the pouring operation, piles up for a long time and causes the pipeline to block up easily, and the pipeline is easy to fracture and spouts the material after the multiple high temperature clearance of current material filling pipe has certain danger.

Disclosure of Invention

The utility model aims to overcome the defects that the temperature of epoxy resin is easy to reduce, solidification is generated and later conveying is inconvenient in the conventional epoxy resin conveying process, and provides a heat preservation component for an epoxy resin material injection pipeline and a material injection system thereof.

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

the utility model provides an epoxy annotates heat preservation subassembly for pipeline, includes the body, from left to right cover in proper order on the body is equipped with third heat preservation subassembly, first heat preservation subassembly and second heat preservation subassembly, and first heat preservation subassembly is connected with the conduction oil heating cabinet through first inlet pipe, is connected through the second connecting pipe between first heat preservation subassembly and the second heat preservation subassembly, and the second heat preservation subassembly is connected on third heat preservation subassembly through first connecting pipe, and third heat preservation subassembly is connected on the conduction oil heating cabinet through first circulating pipe.

Through the cooperation of first heat preservation subassembly, second heat preservation subassembly and third heat preservation subassembly, adopt spaced heating in the transportation process, heat the middle part of body earlier, later carry the conduction oil that has used again in the third heat preservation subassembly, heat the afterbody, in carrying the third heat preservation subassembly after the temperature is suitable, heat the head, the conduction oil is in circulation always, at cyclic process, fully heats epoxy, simultaneously to the heat make full use of in the conduction oil, avoid the heat extravagant.

Preferably, the first heat preservation subassembly includes first heat exchange barrel, and the cover is equipped with first heat exchange barrel on the first heat exchange barrel, and the second heat exchange subassembly includes the second heat exchange barrel, and the cover is equipped with the second heat exchange barrel on the second heat exchange barrel, and the third heat preservation subassembly includes the third heat exchange barrel, and the cover is equipped with the third heat exchange barrel on the third heat exchange barrel, and the body passes third heat exchange barrel, first heat exchange barrel and second heat exchange barrel in proper order.

The arrangement of the first heat insulation barrel, the second heat insulation barrel and the third heat insulation barrel is to divide the used heat conduction oil and the internal heat exchange barrel, so that heat in the heat exchange barrel is prevented from being transferred to the air, and the heat exchange efficiency of the heat exchange barrel is prevented from being influenced.

Preferably, the first inlet pipe is connected with the first heat exchange barrel, the side wall of the upper part of the first heat exchange barrel is provided with a second outlet, one end of the second connecting pipe is connected to the first heat exchange barrel, the other end of the second connecting pipe is connected to the second heat exchange barrel, the side wall of the upper part of the second heat exchange barrel is provided with a first outlet, one end of the first connecting pipe is connected to the second heat exchange barrel, and the other end of the first connecting pipe is connected to the third heat exchange barrel.

After the heat conduction oil is filled in the first heat-insulating barrel, the heat conduction oil is conveyed into the first heat-insulating barrel through the second outlet, the effect of isolating the outside is achieved, when the heat conduction oil flows, the heat in the later heat conduction oil is sequentially conveyed into the second heat-insulating barrel and the third heat-insulating barrel, the heat of the heat conduction oil is fully utilized, the heat in the second heat-insulating barrel and the third heat-insulating barrel is conveyed into the heat-insulating barrel sleeved with the first heat-insulating barrel in the same way, and the heat in the heat-insulating barrel is prevented from being transferred into the air through the heat-insulating barrel.

Preferably, the axes of the first heat exchange barrel and the second heat exchange barrel are obliquely arranged.

The first heat exchange barrel and the second heat exchange barrel are obliquely arranged, and the second outlet and the first outlet are arranged above the oblique side wall, so that the first heat insulation barrel and the second heat insulation barrel are guaranteed to be filled with heating oil.

Preferably, a third outlet is arranged on the side wall of the third heat exchange barrel, and one end of the first circulating pipe is connected to the third heat insulation barrel.

And the heat conduction oil is conveyed into the heat conduction oil heating box through the first circulating pipe, and is heated again through the heat conduction oil heating box.

Preferably, the top of second heat transfer bucket inside wall is provided with first temperature sensor, is connected with the second inlet pipe on the conduction oil heating cabinet, and the one end of second inlet pipe is connected on the second connecting pipe, is provided with second temperature sensor on the inside wall of second thermal-insulated bucket, is connected with the second circulating pipe on the conduction oil heating cabinet, and the second circulating pipe is connected with first connecting pipe.

The first temperature sensor and the second temperature sensor ensure that the temperature of the heat conduction oil conveyed into the second heat insulation barrel or the third heat insulation barrel exceeds the temperature, so that the heat is prevented from being transferred to the heat conduction oil by the epoxy resin, and the solidification of the epoxy resin is accelerated.

Preferably, the tube body adopts a double-layer steel ring structure.

The inner steel ring is used as a hose framework to provide strength, and the outer steel ring and the outer protective sleeve have the effects of compression resistance and friction resistance.

An epoxy resin material injecting system comprises a material injecting tank and a material injecting tank, wherein a material injecting tank feeding pipe is connected to the material injecting tank, a pipe body is connected between the material injecting tank feeding pipe and the material injecting tank, and the pipe body is connected with the material injecting tank feeding pipe through a plate handle type quick connector.

Compared with the prior art, the utility model has the beneficial effects that: the epoxy resin in the middle part is heated through the first heat preservation component, the epoxy resin in the middle part is guaranteed to be at a proper temperature, the epoxy resin starts to be in a flowing state, the temperature of the epoxy resin at the tail part is less than the heat emitted by the epoxy resin in the middle part, the temperature is still higher after the heat conduction oil in the first heat preservation component is conveyed out of the middle part, the heat conduction oil can be continuously used in the second heat preservation component, the epoxy resin at the head part is the same, the temperature of the epoxy resin is always in the range of about 60 ℃, the good fluidity is kept, the conveying efficiency of the epoxy resin is improved, the heat of the heat conduction oil is fully utilized, the loss of the temperature of the heat conduction oil is reduced, when the epoxy resin is in a static state, the heat insulation barrels in the first heat preservation component, the second heat preservation component and the third heat preservation component can divide the air, the heat emitted by the epoxy resin is reduced, the heat is simultaneously heated, and the epoxy resin is convenient to flow in the later period.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of the inside of a heat exchange structure according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of a material injection system according to an embodiment of the present utility model.

In the figure: the heat-conducting oil heating device comprises a tube body 1, a first connecting tube 2, a first feeding tube 3, a first heat-insulating barrel 4, a second connecting tube 5, a second feeding tube 6, a third heat-exchanging barrel 7, a second heat-insulating barrel 8, a circulating tube 9, a third heat-insulating barrel 10, a heat-conducting oil heating box 11, a first outlet 12, a first temperature sensor 13, a second heat-exchanging barrel 14, a second outlet 15, a first heat-exchanging barrel 16, a third outlet 17, a second temperature sensor 18, a second circulating tube 19, a material injection tank 20, a material injection tank 21, a material injection tank 22 and a plate-type rapid joint 23.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

Referring to fig. 1-2, a heat preservation assembly for an epoxy resin injection pipeline comprises a pipe body 1, a third heat preservation assembly, a first heat preservation assembly and a second heat preservation assembly are sequentially sleeved on the pipe body 1 from left to right, heat conduction oil is conveyed in the third heat preservation assembly, the first heat preservation assembly and the second heat preservation assembly to heat epoxy resin in the pipe body 1, so that the epoxy resin is kept at a proper temperature, the fluidity of the epoxy resin is ensured, the first heat preservation assembly is connected with a heat conduction oil heating box 11 through a first feeding pipe 3, the temperature of the heat conduction oil conveyed by the heat conduction oil heating box 11 is 60-70 ℃, the epoxy resin at the middle part of the pipe body 1 is fully heated, the first heat preservation assembly is connected with the second heat preservation assembly through a second connecting pipe 5, the second heat preservation assembly is connected on the third heat preservation assembly through a first connecting pipe 2, the third heat preservation assembly is connected on the heat conduction oil heating box 11 through a first circulating pipe 9, the first heat-preserving component is positioned in the middle of the second heat-preserving component and the third heat-preserving component, the heat conduction oil firstly passes through the first heat-preserving component to keep the proper temperature of the epoxy resin in the middle of the pipe body 1, then the used heat conduction oil is conveyed into the second heat-preserving component, the temperature of the heat conduction oil is firstly determined, the epoxy resin firstly heats through the first heat-preserving component in the flowing process and then is conveyed into the second heat-preserving component, the heat dissipation is less, so the temperature of the heat conduction oil in the second heat-preserving component is lower than the temperature of the heat conduction oil of the first heat-preserving component, the heat conduction oil is conveyed into the third heat-preserving component after the temperature is proper, the heat conduction oil with the improper temperature is conveyed into the heat conduction oil through the heat conduction oil heating box 11, the epoxy resin at the tail of the pipe body 1 is heated after the heat conduction oil is mixed, the proper temperature is ensured, finally, the third heat-insulating assembly, the first heat-insulating assembly and the second heat-insulating assembly are filled with heat-conducting oil in the waiting process of the epoxy resin, so that the temperature of the pipe body 1 can be kept in a proper range.

Referring to fig. 1-2, the first heat preservation component comprises a first heat exchange barrel 16, a first heat insulation barrel 4 is sleeved on the first heat exchange barrel 16, the second heat exchange component comprises a second heat exchange barrel 14, a second heat insulation barrel 8 is sleeved on the second heat exchange barrel 14, the third heat preservation component comprises a third heat exchange barrel 7, a third heat insulation barrel 10 is sleeved on the third heat exchange barrel 7, the pipe body 1 sequentially penetrates through the third heat exchange barrel 7, the first heat exchange barrel 16 and the second heat exchange barrel 14, and the heat conduction oil is fully filled in the first heat exchange barrel 4, the second heat insulation barrel 8 and the third heat insulation barrel 10 to transfer the temperature of the heat conduction oil to the surrounding air, so that the heat conduction oil in the heat exchange barrel is prevented from reducing the temperature and affecting the heat transfer.

Referring to fig. 1-2, the first feeding pipe 3 is connected with the first heat exchange barrel 16, the first feeding pipe 3 is connected at the bottom of the first heat exchange barrel 16, so that heat conduction oil forms circulation flow, the side wall of the upper part of the first heat exchange barrel 16 is provided with a second outlet 15, the heat conduction oil in the first heat exchange barrel 16 is discharged into the first heat insulation barrel 4 through the second outlet 15 after being filled, one end of the second connecting pipe 5 is connected with the first heat insulation barrel 4 and then is conveyed into the second heat exchange barrel 14 through the second connecting pipe 5, heat is transferred to epoxy resin in the pipe body 1 when flowing, as the heat conduction oil always flows, only part of heat is transferred to the epoxy resin, the average temperature of the heat conduction oil is still higher than that of the epoxy resin, and then is conveyed into the second heat exchange barrel 14, the epoxy resin at the tail part of the pipe body 1 is heated, the heat of the epoxy resin is improved, the other end of the second connecting pipe 5 is connected to the second heat exchange barrel 14, the second connecting pipe 5 is connected to the bottom in the second heat exchange barrel 14, the side wall of the upper part of the second heat exchange barrel 14 is provided with a first outlet 12, one end of the first connecting pipe 2 is connected to the second heat insulation barrel 8, the other end of the first connecting pipe 2 is connected to the third heat exchange barrel 7, since the head of the third heat exchange barrel 7 is positioned against the injection tank 20, when the material is heated in the injection tank 20, the material can be transferred to the epoxy resin at the head, the temperature of the epoxy resin is less than that of the epoxy resin at the middle part and the tail, at the moment, the heat conducting oil in the second heat exchange barrel 8 accords with the temperature and can be conveyed into the third heat exchange barrel 7, the epoxy resin at the head of the pipe 1 is heated and is conveyed into the third heat insulation barrel 10 at the same time, the heat dissipation to the outside air is reduced, the side wall of the third heat exchange barrel 7 is provided with a third outlet 17, one end of the first circulating pipe 9 is connected to the third heat insulation barrel 10, the axes of the first heat exchange barrel 16 and the second heat exchange barrel 14 are inclined, when the epoxy resin is just discharged from the material injection tank 20, the temperature is higher than the surrounding temperature, the epoxy resin at the head part can absorb part of heat and cannot quickly cool down, after that, the heat dissipation of the middle part and the tail part is quicker, and heat preservation is performed through heat conduction inside the first heat exchange barrel 16 and the second heat exchange barrel 14.

Referring to fig. 1 to 3, a first temperature sensor 13 is arranged at the top of the inner side wall of the second heat exchange barrel 14, a second feeding pipe 6 is connected to the heat conduction oil heating box 11, one end of the second feeding pipe 6 is connected to the second connecting pipe 5, a second temperature sensor 18 is arranged on the side wall in the second heat insulation barrel 8, a second circulating pipe 19 is connected to the heat conduction oil heating box 11, the second circulating pipe 19 is connected with the first connecting pipe 2, and the arrangement of the first temperature sensor 13 and the second temperature sensor 18 ensures that the temperature of heat conduction oil conveyed into the second heat insulation barrel 8 or into the third heat insulation barrel 10 exceeds 60 ℃, so that heat transfer of epoxy resin to the heat conduction oil is avoided, and solidification of the epoxy resin is accelerated.

Referring to fig. 1 to 3, the pipe body 1 adopts a multi-layer composite pipe, the multi-layer composite pipe adopts a double-layer steel ring structure, the inner steel ring is used as a hose framework to provide strength, the outer steel ring and the outer protective sleeve have compression and friction resistance, the inner layer is provided with an anti-corrosion film layer, the anti-corrosion performance is provided, and the service life of the hose is greatly prolonged.

Referring to fig. 3, an epoxy resin injection system comprises an injection tank 20 and an injection tank 21, wherein an injection tank feed pipe 22 is connected to the injection tank 21, the pipe body 1 is connected between the injection tank feed pipe 22 and the injection tank 20, the pipe body 1 is connected with the injection tank feed pipe 22 through a plate handle type quick connector 23, after the injection operation is finished, the multi-layer composite injection pipe and the injection tank are respectively subjected to 105 ℃ and 10min high-temperature discharge, so that epoxy resin waste on the pipe wall is discharged, the cleaning is convenient, the multi-layer composite injection pipe, the plate handle type quick connector and the injection tank which are adopted by the utility model are all made of high-temperature resistant materials, and can be continuously used after being cleaned at high temperature for many times, and leakage and injection risks can not occur in the subsequent use process.

Before the material injection operation, the quick connector 23 is connected with the material injection groove feeding pipe 22 through the plate, before the epoxy resin is conveyed into the pipe body 1 to the material injection groove 20, the heat conduction oil in the heat conduction oil heating box 11 is conveyed into the first heat exchange barrel 16 through the first feeding pipe 3, after the heat conduction oil is filled in the first heat exchange barrel 16, the heat conduction oil is discharged into the first heat insulation barrel 4 through the second outlet 15, after the heat insulation barrel 4 is filled with the heat conduction oil, the heat conduction oil is conveyed into the second heat exchange barrel 14 through the second connecting pipe 5, the second heat exchange barrel 14 is filled with the heat conduction oil, the epoxy resin is conveyed into the pipe body 1 from the material injection groove 20, the temperature of the epoxy resin just discharged from the material injection groove 20 is higher, the temperature is reduced along with the flow when the epoxy resin is positioned in the middle of the pipe body 1, the heat conduction oil in the first heat exchange barrel 16 transfers heat to the epoxy resin when the epoxy resin is conveyed through the first heat exchange barrel 16 and the second heat exchange barrel 14, the heat of the epoxy resin is increased, the epoxy resin is convenient to continue flowing, because the first heat exchange barrel 16 transfers the heat to the epoxy resin, when the heat conduction oil in the first heat exchange barrel 16 is conveyed into the first heat exchange barrel 4 through the second outlet 15, the heat conduction oil in the first heat exchange barrel 4 divides the outside from the first heat exchange barrel 16, then when the heat conduction oil is conveyed into the second heat exchange barrel 14 through the second connecting pipe 5, the temperature of the heat conduction oil is detected by the first temperature sensor 13, when the heat conduction oil accords with the temperature, the heat conduction oil in the second heat exchange barrel 14 continuously transfers the heat to the epoxy resin at the tail part of the pipe body 1, when the heat conduction oil temperature is too low, the heat conduction oil heating box 11 conveys the heat conduction oil into the second heat exchange barrel 14 through the second feeding pipe 6, the temperature in the second heat exchange barrel 14 is increased, after the heat conduction oil is filled in the second heat exchange barrel 14, the temperature is detected by the second temperature sensor 18, at suitable temperature, the conduction oil is conveyed to the third heat exchange barrel 7 through the first connecting pipe 2, the temperature of epoxy resin is externally divided by the conduction oil in the third heat exchange barrel 7, the heat output of epoxy resin is avoided to air, the heat is transferred to the conduction oil in the third heat exchange barrel 7 when the temperature of the epoxy resin is overhigh, after the conduction oil in the third heat exchange barrel 7 is full, the conduction oil is conveyed to the third heat insulation barrel 10 through the third outlet 17, the conduction oil in the third heat exchange barrel 10 is conveyed to the conduction oil heating box 11 through the first circulating pipe 9 and is heated and conveyed to the first heat exchange barrel 16 to form circulation, the second temperature sensor 18 is directly conveyed to the conduction oil heating box 11 through the second circulating pipe 19 after the temperature is detected to be unsuitable, when the epoxy resin in the pipe body 1 is in a static state, the first temperature sensor 13 and the second temperature sensor 18 are closed, the conduction oil is simultaneously injected into the corresponding heat exchange barrel through the third outlet 17, the temperature of the epoxy resin is increased, and then the conduction oil is conveyed to the middle part of the first heat exchange barrel 2 and the first heat exchange barrel 9 through the first connecting pipe 7, and the tail part of the first heat transfer pipe 1 and the tail part of the second heat transfer pipe 11 are conveyed to the heat pipe 11, and the tail part of the heat pipe is heated and the tail part of the heat pipe is conveyed to the tail part of the heat pipe 11.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides an epoxy annotates heat preservation subassembly for pipeline, includes body (1), its characterized in that: the heat-insulating pipe comprises a pipe body (1), a third heat-insulating component, a first heat-insulating component and a second heat-insulating component are sequentially sleeved on the pipe body (1) from left to right, the first heat-insulating component is connected with a heat-conducting oil heating box (11) through a first feeding pipe (3), the first heat-insulating component is connected with the second heat-insulating component through a second connecting pipe (5), the second heat-insulating component is connected onto the third heat-insulating component through a first connecting pipe (2), and the third heat-insulating component is connected onto the heat-conducting oil heating box (11) through a first circulating pipe (9).

2. The insulation assembly for an epoxy injection conduit according to claim 1, wherein: the first heat preservation subassembly includes first heat transfer bucket (16), the cover is equipped with first heat exchange bucket (4) on first heat transfer bucket (16), the second subassembly includes second heat transfer bucket (14), the cover is equipped with second heat exchange bucket (8) on second heat transfer bucket (14), the third heat preservation subassembly includes third heat transfer bucket (7), the cover is equipped with third heat exchange bucket (10) on third heat transfer bucket (7), body (1) pass third heat transfer bucket (7), first heat transfer bucket (16) and second heat transfer bucket (14) in proper order.

3. The insulation assembly for an epoxy injection conduit according to claim 2, wherein: the first inlet pipe (3) is connected with a first heat exchange barrel (16), a second outlet (15) is formed in the side wall of the upper portion of the first heat exchange barrel (16), one end of a second connecting pipe (5) is connected to the first heat insulation barrel (4), the other end of the second connecting pipe (5) is connected to the second heat exchange barrel (14), a first outlet (12) is formed in the side wall of the upper portion of the second heat exchange barrel (14), one end of the first connecting pipe (2) is connected to the second heat insulation barrel (8), and the other end of the first connecting pipe (2) is connected to the third heat exchange barrel (7).

4. A thermal insulation assembly for an epoxy injection conduit according to claim 3, wherein: the axes of the first heat exchange barrel (16) and the second heat exchange barrel (14) are both obliquely arranged.

5. The insulation assembly for an epoxy injection conduit according to claim 2, wherein: a third outlet (17) is arranged on the side wall of the third heat exchange barrel (7), and one end of the first circulating pipe (9) is connected to the third heat insulation barrel (10).

6. The insulation assembly for an epoxy injection conduit according to claim 2, wherein: the top of second heat transfer bucket (14) inside wall is provided with first temperature sensor (13), is connected with second inlet pipe (6) on conduction oil heating cabinet (11), and one end of second inlet pipe (6) is connected on second connecting pipe (5), is provided with second temperature sensor (18) on the lateral wall in second heat-proof bucket (8), is connected with second circulating pipe (19) on conduction oil heating cabinet (11), and second circulating pipe (19) are connected with first connecting pipe (2).

7. The insulation assembly for an epoxy injection conduit according to claim 1, wherein: the pipe body (1) adopts a double-layer steel ring structure.

8. An epoxy resin injection system, characterized in that: the device comprises a material injection tank (20) and a material injection tank (21), wherein a material injection tank feeding pipe (22) is connected to the material injection tank (21), a pipe body (1) according to claims 1-7 is connected between the material injection tank feeding pipe (22) and the material injection tank (20), and the pipe body (1) is connected with the material injection tank feeding pipe (22) through a plate handle type quick connector (23).