CN212584489U

CN212584489U - Polyurethane insulating tube nested formula connecting device

Info

Publication number: CN212584489U
Application number: CN202021367971.7U
Authority: CN
Inventors: 谷开东; 王瑞; 蒋兴勇
Original assignee: Jinan Huafeng Thermal Insulation Engineering Co ltd
Current assignee: Jinan Huafeng Thermal Insulation Engineering Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-02-23
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a nested formula connecting device of polyurethane insulating tube, include the cover flange and insert the flange, cover flange and the relative side end portion of inserting the flange all are equipped with an insertion section of thick bamboo, and form the cooperation of pegging graft between two insertion section of thick bamboos, two the junction outer wall of an insertion section of thick bamboo has cup jointed the seam pipe box, cover flange and the opposite side outer wall of inserting the flange all are equipped with the pressfitting groove, and the inner wall joint in pressfitting groove has sealed rubber ring, the outer wall equidistance annular distribution of sealed rubber ring has the pole hole of wearing, and the inner wall in pole hole is pegged graft and is had fixed pole of wearing. The utility model discloses a mutual opposite plug flange, a section of thick bamboo fixed connection flange end of pegging graft, flange end are through cup jointing at the insulating tube outer wall, and inside is through the interlock indentation, and the fixed body of steel ring prevents moving back the subassembly with inside, and zero clearance guarantees that relative clearance limits slippery between taut back body, and the steel ring can guarantee to prevent moving back the reservation of subassembly and insulating tube interior pipe end and combine mutually, reduces the skew between the body when it is nested.

Description

Polyurethane insulating tube nested formula connecting device

Technical Field

The utility model relates to a pipe connection spare technical field especially relates to a nested formula connecting device of polyurethane insulating tube.

Background

The polyurethane thermal insulation pipe is formed by foaming a high-function polyether polyol composite material and multi-time methyl polyphenyl polyisocyanate as raw materials through chemical reaction. The polyurethane heat-insulating pipe has the excellent characteristics of light volume weight, high strength, heat insulation, sound insulation, flame retardance, cold resistance, corrosion resistance, no water absorption, simplicity and rapidness in construction and the like, and becomes an indispensable material for heat insulation, water resistance, leakage stoppage, sealing and the like in industrial departments such as buildings, transportation, petroleum, chemical industry, electric power, refrigeration and the like. The polyurethane heat-insulating pipe is used for heat-insulating and cold-insulating engineering of indoor and outdoor various pipelines, centralized heat-supplying pipelines, central air-conditioning pipelines, chemical industry, medicine and other industrial pipelines. The polyurethane foaming heat preservation pipe is developed rapidly as an excellent heat insulation material since the emergence of polyurethane synthetic materials in the thirty years, the application range of the polyurethane foaming heat preservation pipe is wider and wider, and the polyurethane foaming heat preservation pipe is widely applied to various pipelines for heating, refrigeration, oil transportation, steam transportation and the like due to simple construction and remarkable energy-saving and corrosion-resistant effects. It is used for various pipelines for heating, refrigerating, oil and gas transportation.

The connection of current polyurethane insulating tube is through the coupling simple connection, and port and steel pipe are all filled to inside polyurethane through welded fastening, difficult dismouting, can make the connecting piece interval at pipeline both ends connect unstablely.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a polyurethane insulating tube nested connecting device.

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

a nested connecting device for a polyurethane thermal insulation pipe comprises a sleeve flange and an insertion flange, wherein the opposite side end parts of the sleeve flange and the insertion flange are respectively provided with an insertion cylinder, the two insertion cylinders are in insertion fit, the outer wall of the joint of the two insertion cylinders is sleeved with a joint pipe sleeve, the outer walls of the opposite sides of the sleeve flange and the insertion flange are respectively provided with a pressing groove, the inner walls of the pressing grooves are clamped with a sealing rubber ring, the outer wall of the sealing rubber ring is equidistantly and annularly provided with a penetrating rod hole, the inner wall of the penetrating rod hole is inserted with a fixed penetrating rod, one side of the inner walls of the sleeve flange and the insertion flange, which is close to the sealing rubber ring, is provided with a pipe end retraction steel ring, the joints of the insertion cylinder, the sleeve flange and the insertion flange are respectively clamped with an anti-withdrawal assembly, the anti-withdrawal assembly comprises a pressing pad and a steel ring fixing sleeve, the end part of the pressing pad is fixedly connected, and the outer wall of one side of the pressing pad close to the steel ring fixing sleeve is provided with exhaust holes in an equidistant annular distribution mode.

Further, the pipe end indentation steel ring includes indentation steel ring and indentation screw rod, and the top outer wall of indentation steel ring is equipped with the indentation ring, the outer wall transmission of indentation screw rod is connected on the inner wall of indentation ring.

Furthermore, the sleeve flange and one side of the outer wall of the inserting flange are provided with adjusting holes, and the end part of the indentation screw rod is fixedly connected to the inner wall of the adjusting hole.

Furthermore, the seam pipe sleeve comprises two semi-rings and a connecting screw rod, the outer walls of one ends of the two semi-rings are fixedly connected through a shaft, and the bottom end of the connecting screw rod is vertically and fixedly connected to the outer walls of the other ends of the two semi-rings.

Furthermore, the inner walls of the two semi-rings are sleeved with flat sealing rings, and the inner walls of the flat sealing rings are sleeved at the joint of the two inserting cylinders.

Furthermore, the connecting inner walls of the two inserting tubes are provided with limiting convex grooves, and the width of the limiting convex grooves is the same as that of the seam pipe sleeve.

Further, still include the interior lantern ring, the tip fixedly connected with fixed swivel nut of pressfitting pad, and the outer wall of fixed swivel nut passes through threaded engagement and connects on the inner wall of the interior lantern ring, the outer wall joint of the interior lantern ring is on the tip inner wall of cover flange and plug-in flange.

The utility model has the advantages that:

1. the nested connecting device for the heat-insulating pipe is characterized in that the flange end is fixedly connected through two flanges which are mutually oppositely inserted and connected, the flange end is sleeved on the outer wall of the heat-insulating pipe and retracts inside through occlusion, the steel ring fixes the pipe body and the internal anti-retraction assembly, no gap exists between the pipe body after tensioning, the relative gap between the pipe body and the pipe body is guaranteed to be limited to be smooth, and the stability is high;

2. the steel ring in the nested connecting device of the heat-insulating pipe is a bifilar steel ring, and is clamped by a retracting screw rod when being sheathed on the steel ring fixing sleeve, so that the anti-withdrawal assembly is ensured to be combined with the reserved inner pipe end part of the heat-insulating pipe, and the deviation between pipe bodies when the anti-withdrawal assembly is nested is reduced;

3. the outer walls of the two flange ends in the insulating pipe nested type connecting device are mutually tensioned through the penetrating rod, so that the joints of the inner and outer pipelines are all tightly connected, the condition that the flange ends are separated due to mutual movement between the pipeline ends is reduced, and the tightness of the connection relation is improved.

Drawings

Fig. 1 is a schematic perspective view of an embodiment 1 of a polyurethane thermal insulation pipe nested connection device provided by the present invention;

fig. 2 is a schematic structural view of an anti-receding component of an embodiment 1 of a polyurethane thermal insulation pipe nested connection device provided by the present invention;

fig. 3 is a schematic view of the structure of the pipe end indentation steel ring of the polyurethane thermal insulation pipe nested connecting device of embodiment 1 of the present invention.

Fig. 4 is the utility model provides a polyurethane insulating tube nested formula connecting device embodiment 2 prevent moving back subassembly schematic structure.

In the figure: 1. sleeving a flange; 2. inserting a flange; 3. fixing the penetrating rod; 4. a plug-in barrel; 5. a pressing groove; 6. the pipe end is retracted into the steel ring; 7. a back-off prevention assembly; 8. a rod penetrating hole; 9. an adjustment hole; 10. sealing the rubber ring; 11. pressing the pad; 12. an exhaust hole; 13. fixing a steel ring sleeve; 14. retracting the screw; 15. retracting the steel ring; 16. a seaming pipe sleeve; 17. an inner collar; 18. and fixing the threaded sleeve.

Detailed Description

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

Example 1

Referring to fig. 1-3, a polyurethane thermal insulation pipe nested type connecting device comprises a sleeve flange 1 and an insertion flange 2, wherein the opposite side end parts of the sleeve flange 1 and the insertion flange 2 are respectively provided with an insertion cylinder 4, the two insertion cylinders 4 are in insertion fit, the outer wall of the joint of the two insertion cylinders 4 is sleeved with a joint pipe sleeve 16, the outer walls of the opposite sides of the sleeve flange 1 and the insertion flange 2 are respectively provided with a pressing groove 5, the inner wall of the pressing groove 5 is clamped with a sealing rubber ring 10, the outer wall of the sealing rubber ring 10 is annularly distributed with penetrating rod holes 8 at equal intervals, the inner walls of the penetrating rod holes 8 are inserted with fixed penetrating rods 3, the pipe end of one side of the inner walls of the sleeve flange 1 and the insertion flange 2, which is close to the sealing rubber ring 10, is provided with a retraction steel ring 6, the joint of the insertion cylinder 4, the sleeve flange 1 and the insertion flange 2 is clamped with a withdrawal prevention component 7, and the withdrawal prevention component 7 comprises, the end of the pressing pad 11 is fixedly connected to the outer wall of one side of the steel ring fixing sleeve 13, the outer wall of one side of the pressing pad 11 close to the steel ring fixing sleeve 13 is provided with exhaust holes 12 in an equidistant annular distribution, the pipe end indentation steel ring 6 comprises an indentation steel ring 15 and an indentation screw 14, the outer wall of the top end of the indentation steel ring 15 is provided with an indentation ring, the outer wall of the indentation screw 14 is connected to the inner wall of the indentation ring in a transmission way, one side of the outer walls of the sleeve flange 1 and the insertion flange 2 is provided with an adjusting hole 9, the end of the indentation screw 14 is fixedly connected to the inner wall of the adjusting hole 9, the joint pipe sleeve 16 comprises two half rings and a connecting screw, the outer walls of one ends of the two half rings are fixedly connected through a shaft, the bottom end of the connecting screw is vertically and fixedly connected to the outer walls of, the connecting inner walls of the two splicing barrels 4 are provided with limiting convex grooves, and the width of the limiting convex grooves is the same as that of the seam pipe sleeve 16.

The working principle of the embodiment is as follows: this nested formula connecting device of polyurethane insulating tube is in the connection process, the inner tube grafting of its polyurethane insulating tube is on preventing moving back the inner wall of subassembly 7, pressfitting pad 11 is through exhaust hole 12 exhaust gas propelling contraction on the inner tube outer wall, the fixed cover 13 of sealed steel ring 10 pressfitting inner tube and steel ring simultaneously, both ends are to inserting through a grafting section of thick bamboo 4 and are recycled the fixed joint of seam pipe box 16, both sides cover flange 1 and insert and connect through fixed poling 3 between the flange 2, guarantee holistic nested formula body connection stability.

Example 2

Referring to fig. 4, a nested connecting device for polyurethane thermal insulation pipes, which is different from embodiment 1 mainly in that the nested connecting device further includes an inner collar 17, a fixing threaded sleeve 18 is fixedly connected to an end of the press pad 11, an outer wall of the fixing threaded sleeve 18 is connected to an inner wall of the inner collar 17 through threaded engagement, and an outer wall of the inner collar 17 is clamped to inner walls of ends of the sleeve flange 1 and the insertion flange 2.

The working principle of the embodiment is as follows: based on embodiment 1, the anti-back assembly 7 is improved, the other end of the anti-back assembly is not connected with a steel ring any more, but is connected with the inner lantern ring 17 through the fixing threaded sleeve 18, the distance is adjusted through threads, and meanwhile, the anti-back assembly plays a role in pressing and sealing between the anti-back assembly and the connecting end of a pipeline, so that the stability of pipe end connection is improved.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", "first", "second", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A nested connecting device for a polyurethane thermal insulation pipe comprises a sleeve flange (1) and an inserting flange (2), and is characterized in that the end parts of one side, opposite to the sleeve flange (1) and the inserting flange (2), of the sleeve flange and the inserting flange are respectively provided with an inserting cylinder (4), the two inserting cylinders (4) are in inserting fit, the outer wall of the joint of the two inserting cylinders (4) is sleeved with a joint pipe sleeve (16), the outer walls of the opposite sides of the sleeve flange (1) and the inserting flange (2) are respectively provided with a pressing groove (5), the inner wall of the pressing groove (5) is clamped with a sealing rubber ring (10), the outer wall of the sealing rubber ring (10) is annularly distributed with penetrating rod holes (8) at equal intervals, the inner wall of the penetrating rod holes (8) is inserted with fixed penetrating rods (3), and one side, close to the sealing rubber ring (10), of the inner walls of the sleeve flange (1) and the inserting flange (2) is provided with a pipe end retracting steel, an inserting connection section of thick bamboo (4) and cover flange (1) and the equal joint in junction of inserting flange (2) have and prevent moving back subassembly (7), and prevent moving back subassembly (7) and fill up (11) and the fixed cover of steel ring (13) including the pressfitting, the tip fixed connection of pressfitting pad (11) is on one side outer wall of the fixed cover of steel ring (13), and pressfitting pad (11) have exhaust hole (12) near the one side outer wall equidistance annular distribution of the fixed cover of steel ring (13).

2. The nested connecting device for the polyurethane thermal insulation pipe as claimed in claim 1, wherein the pipe end indentation steel ring (6) comprises an indentation steel ring (15) and an indentation screw (14), the outer wall of the top end of the indentation steel ring (15) is provided with an indentation ring, and the outer wall of the indentation screw (14) is in transmission connection with the inner wall of the indentation ring.

3. The nested connecting device for the polyurethane thermal insulation pipes as claimed in claim 2, wherein one side of the outer walls of the sleeve flange (1) and the insertion flange (2) is provided with an adjusting hole (9), and the end part of the retraction screw (14) is fixedly connected to the inner wall of the adjusting hole (9).

4. The nested connecting device for the polyurethane thermal insulation pipe as claimed in claim 1, wherein the joint pipe sleeve (16) comprises two half rings and a connecting screw rod, the outer walls of one ends of the two half rings are fixedly connected through a shaft, and the bottom end of the connecting screw rod is vertically and fixedly connected to the outer walls of the other ends of the two half rings.

5. The nested connecting device for the polyurethane thermal insulation pipe is characterized in that the inner walls of the two half rings are sleeved with flat sealing rings, and the inner walls of the flat sealing rings are sleeved at the connecting part of the two inserting cylinders (4).

6. The nested polyurethane insulation pipe connecting device as claimed in claim 1, wherein the connecting inner walls of the two inserting cylinders (4) are provided with limiting convex grooves, and the width of the limiting convex grooves is the same as that of the seam pipe sleeve (16).

7. The nested connecting device for the polyurethane thermal insulation pipes as claimed in claim 1, further comprising an inner sleeve ring (17), wherein the end of the press pad (11) is fixedly connected with a fixing threaded sleeve (18), the outer wall of the fixing threaded sleeve (18) is connected to the inner wall of the inner sleeve ring (17) through threaded engagement, and the outer wall of the inner sleeve ring (17) is clamped on the inner walls of the end portions of the sleeve flange (1) and the insertion flange (2).