CN208778998U

CN208778998U - Double-layer wear-resistant pipe for concrete conveyance

Info

Publication number: CN208778998U
Application number: CN201821178018.0U
Authority: CN
Inventors: 许学华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2019-04-23
Anticipated expiration: 2028-07-24

Abstract

The utility model discloses the double-layer wear-resistant pipes for concrete conveyance, including the outer protection tube and internal layer wear-resistant pipe, the internal layer wear-resistant pipe is nested in described the outer protection tube, and it fits together perfectly between the internal layer wear-resistant pipe and described the outer protection tube, the length of the internal layer wear-resistant pipe is less than the length of described the outer protection tube, the internal layer wear-resistant pipe includes that the wear-resisting big curved and internal layer of internal layer is wear-resisting small curved, the wear-resisting big curved cross section of the wear-resisting small curved and internal layer of internal layer is semi-enclosed ring-type, the internal layer it is wear-resisting it is big it is curved be uniformly constant from ends A to middle part B, the thickness of the middle part B is one times of the thickness of ends A, and the wear-resisting big curved two sides C of internal layer thickens to middle part D, described wear-resisting small curved and described the outer protection tube of internal layer is from ends A to middle part B uniform thickness, it can reach between inner and outer tubes and be seamlessly connected , and without adding filler, to extend the service life of bend pipe.

Description

Double-layer wear-resistant pipe for concrete conveyance

Technical field

The utility model relates to a kind of conveying bridge piece structures for trandfer fluid state material, more particularly to one kind Double-layer wear-resistant pipe for concrete conveyance.

Background technique

The forming technique of bend pipe mainly has casting and forming, compression molding etc., they are all by molding die, by pouring Or hot cold-press process profiling generates；Either any machinery equipment or pipeline, most of is all that can use bend pipe, mainly For conveying various materials, the conveying of material is conveyed by pipeline pressure, and delivery pipe is by biggish pressure and serious mill Damage, therefore have higher comprehensive performance requirement to delivery pipe, especially bridge piece.

It is single layer Technique of High Magnesium Bend Pipe that bend pipe is the most widely used at present, also has and uses the double-deck rich chromium cast iron bend pipe on a small quantity, Single layer Technique of High Magnesium Bend Pipe wear-resisting property is poor, and hardness is low, and safety is low；Double-layer wear-resistant bend pipe, wear-resisting property is excellent, and hardness is high, safety Performance is high, but there is filler in the centre of many double-layer wear-resistant bend pipes, so that the wearability of inner tube reduces, uses for a long time, There are multiple potholes in the inner tube last time of inner wall, this pothole can extend to the inner wall direction of outer tube, also reduce making for outer tube It with the service life, is replaced so as to cause by entire double-layer wear-resistant pipe, increases production cost, reduce its stability.

Utility model content

To overcome disadvantages mentioned above, the purpose of this utility model is to provide a kind of double-layer wear-resistants for concrete conveyance Pipe, can reach between inner and outer tubes and be seamlessly connected, and without adding filler, to extend the service life of bend pipe.

In order to reach the goals above, the technical solution adopted in the utility model is: the double-layer wear-resistant for concrete conveyance Pipe, including the outer protection tube and internal layer wear-resistant pipe, it is characterised in that: the internal layer wear-resistant pipe is nested in described the outer protection tube It is interior, and fit together perfectly between the internal layer wear-resistant pipe and described the outer protection tube, the length of the internal layer wear-resistant pipe is less than described The length of the outer protection tube, the internal layer wear-resistant pipe include that the wear-resisting big curved and internal layer of internal layer is wear-resisting small curved, and the internal layer is wear-resisting small The wear-resisting big curved cross section of curved and internal layer is semi-enclosed ring-type, and the internal layer is wear-resisting big curved uniformly to become from ends A to middle part B Thickness, the thickness of the middle part B is twice of the thickness of ends A, and the wear-resisting big curved two sides C of the internal layer thickens to middle part D, institute Stating the wear-resisting small curved and described the outer protection tube of internal layer is from ends A to middle part B uniform thickness.

It further, further include two wear-resisting connecting flanges, the wear-resisting connecting flange includes flange and wear-resistant sleeve, described Wear-resistant sleeve is mounted on inside the wear-resisting connecting flange, and two wear-resisting connecting flanges are respectively against the internal layer wear-resistant pipe two The outer end face of A is held, and is welded with described the outer protection tube, the wear-resisting connecting flange circumferential surface is provided with card slot.

Further, the wear-resisting connecting flange uses high-quality mild steel.

Further, the crooked radian of described the outer protection tube and internal layer wear-resistant pipe is in 6 ° -90 °.

Further, the thickness of described the outer protection tube is 2mm-6mm, uses high-quality mild steel.

Further, the internal layer wear-resistant pipe and the wear-resistant sleeve are all made of high chromium cast iron material or steel alloy.

Further, the thickness of the wear-resisting small curved middle part B of the internal layer is 8mm-16mm, and the internal layer is wear-resisting big curved Ends A thickness be 4mm-8mm.

Further, the wear-resisting big curved thickness of the internal layer is 4mm-8mm.

Further, the wear-resisting straight tube of one end welded steel double of the double-layer wear-resistant pipe for concrete conveyance.

Further, the double-layer wear-resistant straight tube includes the straight wear-resistant pipe of internal layer and the straight protection pipe of outer layer, and internal layer is directly wear-resisting Pipe and the straight protection pipe of outer layer are from two sides E to middle part F equal thickness.

A kind of double-layer wear-resistant pipe for concrete conveyance provided by the utility model, using wear-resisting connecting flange by outer layer Protection pipe and internal layer wear-resistant pipe are fixed as one, since the wear-resisting big curved middle part of internal layer is twice of the thickness at its both ends, so that It can reach between the outer protection tube and internal layer wear-resistant pipe and fit together perfectly, and internal layer wear-resistant pipe and the outer protection tube are all one Molding, design in this way enables to pipeline overall weight to mitigate 10% or more, and reaching reduces cost, saves the purpose of material.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is another structural schematic diagram of the utility model.

In figure:

1- the outer protection tube；2- internal layer wear-resistant pipe；21- internal layer is wear-resisting small curved；22- internal layer is wear-resisting big curved；The wear-resisting connection of 3- Flange.

Specific embodiment

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear Define.

Referring to shown in attached drawing 1 and Fig. 2, the double-layer wear-resistant pipe for concrete conveyance in the present embodiment, including outer layer are protected Pillar 1 and internal layer wear-resistant pipe 2, internal layer wear-resistant pipe 2 are nested in the outer protection tube 1, and internal layer wear-resistant pipe 2 and the outer protection tube 1 Between fit together perfectly, internal layer wear-resistant pipe 2 includes that internal layer wear-resisting big curved 22 and internal layer are wear-resisting small by curved 21, internal layer wear-resisting small curved 21 and interior Wear-resisting big curved 22 cross section of layer is semi-enclosed ring-type, and internal layer wear-resisting big curved 22 is uniformly to thicken from ends A to middle part B, in The thickness of portion B is twice of the thickness of ends A, and the wear-resisting big curved 22 two sides C of internal layer thickens to middle part D, and internal layer is wear-resisting small curved 21 and the outer protection tube 1 are from ends A to middle part B uniform thickness.

It further include two wear-resisting connecting flanges 3, wear-resisting connecting flange 3 includes flange and wear-resistant sleeve, and wear-resistant sleeve is mounted on resistance to Grind connecting flange 3 inside, two wear-resisting connecting flanges 3 respectively against 2 ends A of internal layer wear-resistant pipe outer end face, and with outer layer protect Pillar 1 welds, and wear-resisting 3 circumferential surface of connecting flange is provided with card slot.

Wear-resisting connecting flange 3 uses high-quality mild steel.

The crooked radian of the outer protection tube 1 and internal layer wear-resistant pipe 2 is in 6 ° -90 °.

The thickness of the outer protection tube 1 is 2mm-6mm, uses high-quality mild steel.

Internal layer wear-resistant pipe 2 and wear-resistant sleeve are all made of high chromium cast iron material.

The thickness of the wear-resisting small curved 21 middle part B of internal layer is 8mm-16mm, the thickness of the wear-resisting big curved ends A of internal layer Having a size of 4mm-8mm.

Wear-resisting big curved 22 thickness of internal layer is 4mm-8mm.

Due to the outer protection tube and internal layer wear-resistant pipe be it is integrally formed, internal layer wear-resistant pipe 2 is pressed to using machine It in the outer protection tube 1, enables to internal layer wear-resistant pipe 2 to fit closely with the outer protection tube 1, leaves no gaps, in internal layer wear-resistant pipe 2 Two sides increase wear-resisting connecting flange using special process such as finish rolling, hot jacket, pushings, so that double-layer wear-resistant pipe service life is prolonged Long, the outer protection tube 1 is an entirety, can guarantee that concentricity is consistent, alleviates weight in this way, using wear-resisting connecting flange 4 The outer protection tube 1 and internal layer wear-resistant pipe 2 are fixed as one, in this way design enable to pipeline overall weight mitigate 10% with On, reaching reduces cost, saves the purpose of material.

The wear-resisting straight tube of one end welded steel double of double-layer wear-resistant pipe for concrete conveyance.

Double-layer wear-resistant straight tube includes the straight wear-resistant pipe of internal layer and the straight protection pipe of outer layer, and the straight wear-resistant pipe of internal layer and outer layer are directly protected Pipe is from two sides E to middle part F equal thickness.

Embodiment of above is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with this skill The people of art understands the content of the utility model and is implemented, and does not limit the protection scope of the present invention, and all According to the equivalent change or modification that the spirit of the present invention is substantially done, should all cover within the protection scope of the present utility model.

Claims

1. being used for the double-layer wear-resistant pipe of concrete conveyance, including the outer protection tube (1) and internal layer wear-resistant pipe (2), it is characterised in that: The internal layer wear-resistant pipe (2) is nested in described the outer protection tube (1), and the internal layer wear-resistant pipe (2) and the outer layer protection It fits together perfectly between pipe (1), the internal layer wear-resistant pipe (2) includes that internal layer wear-resisting big curved (22) and internal layer are wear-resisting small curved (21), institute The cross section for stating internal layer wear-resisting small curved (21) and internal layer wear-resisting big curved (22) is semi-enclosed ring-type, and the internal layer is wear-resisting big curved (22) uniformly to thicken from ends A to middle part B, the thickness of the middle part B is twice of the thickness of ends A, and the internal layer is resistance to The two sides C for grinding big curved (22) thickens to middle part D, and the internal layer wear-resisting small curved (21) and described the outer protection tube (1) are from two Hold A to middle part B uniform thickness.

2. the double-layer wear-resistant pipe according to claim 1 for concrete conveyance, it is characterised in that: further include two wear-resisting Connecting flange (3), the wear-resisting connecting flange (3) includes flange and wear-resistant sleeve, and the wear-resistant sleeve is mounted on the wear-resisting connection Flange (3) is internal, two wear-resisting connecting flanges (3) respectively against internal layer wear-resistant pipe (2) ends A outer end face, and It is welded with described the outer protection tube (1), wear-resisting connecting flange (3) circumferential surface is provided with card slot.

3. the double-layer wear-resistant pipe according to claim 2 for concrete conveyance, it is characterised in that: the wear-resisting connection method Blue (3) use high-quality mild steel.

4. the double-layer wear-resistant pipe according to claim 1 for concrete conveyance, it is characterised in that: described the outer protection tube (1) and the crooked radian of internal layer wear-resistant pipe (2) is in 6 ° -90 °.

5. the double-layer wear-resistant pipe according to claim 1 for concrete conveyance, it is characterised in that: described the outer protection tube (1) thickness is 2mm-6mm, uses high-quality mild steel.

6. the double-layer wear-resistant pipe according to claim 2 for concrete conveyance, it is characterised in that: the internal layer wear-resistant pipe (2) and the wear-resistant sleeve is all made of high chromium cast iron material or steel alloy.

7. the double-layer wear-resistant pipe according to claim 1 for concrete conveyance, it is characterised in that: the internal layer is wear-resisting small The thickness of the middle part B of curved (21) is 8mm-16mm, and the thickness of the wear-resisting big curved ends A of the internal layer is 4mm-8mm.

8. the double-layer wear-resistant pipe according to claim 1 for concrete conveyance, it is characterised in that: the internal layer is wear-resisting big The thickness of curved (22) is 4mm-8mm.

9. -8 any double-layer wear-resistant pipe for concrete conveyance according to claim 1, it is characterised in that: described to be used for The wear-resisting straight tube of one end welded steel double of the double-layer wear-resistant pipe of concrete conveyance.

10. the double-layer wear-resistant pipe according to claim 9 for concrete conveyance, it is characterised in that: the double-layer wear-resistant Straight tube includes the straight wear-resistant pipe of internal layer and the straight protection pipe of outer layer, and the straight wear-resistant pipe of internal layer and the straight protection pipe of outer layer is from two sides E To middle part F equal thickness.