Steel-plastic composite pipe with plating layer

Abstract

The utility model discloses a steel-plastic composite pipe with a plating layer, which relates to the technical field of steel-plastic composite pipes, and comprises a composite pipe body, a plating layer main body is arranged on the inner wall of the composite pipe body, and a positioning block is attached to the end part of the composite pipe body. In order to improve the compression resistance effect of the composite pipes during stacking, reinforcing ribs can be firstly inserted into a first connecting rod and a containing groove in the outer wall of a supporting block, a first bolt is rotated, the reinforcing ribs are supported and positioned through the first bolt under the action of a first nut, and the reinforcing ribs are inserted into the inner walls of the composite pipes through connection of a positioning block; and a rotary knob is rotated to drive a clamping block to fix the outer wall of the composite pipe through rotation of a threaded rod, and under connection of a supporting block, a reinforcing rib is driven to stably support in the composite pipe, so that the effect of improving the compression resistance of the composite pipe during stacking is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel-plastic composite pipes, in particular to a steel-plastic composite pipe with a coating. Background Art

[0002] Steel-plastic composite pipes are composed of metal thin-walled pipes lined with engineering plastic pipes. The material of the lining pipe is ultra-high molecular weight polyethylene (UHMW-PE). Steel-plastic composite pipes are hygienic and non-toxic, and have excellent low-temperature resistance. Steel-plastic composite pipes are wear-resistant and do not scale.

[0003] For example, announcement number CN2516795Y discloses a steel-plastic composite pipe for conveying fluid (liquid, gas), which is characterized by: (1) the outer wall and inner wall of the composite pipe are polyolefin plastic, and the middle is a steel pipe formed by straight seam welding of a steel strip treated with copper (or aluminum, zinc, tin) on the surface, and the coated steel pipe is bonded to the inner and outer polyolefin plastic layers by a polymer adhesive; (2) the composite pipe has a seven-layer structure from the inside to the outside: polyolefin plastic layer, adhesive layer, coating, steel strip, coating, adhesive layer, polyolefin plastic layer. The steel-plastic composite pipe with the above structure has the advantages of low cost, light weight, high strength, corrosion resistance, long service life, high interlayer bonding force, no delamination, etc., and has excellent comprehensive performance. This composite pipe fully utilizes the special properties of the copper (or aluminum, zinc, tin) treated steel strip, the physical and chemical properties of plastics and the high strength of the steel pipe to form a new type of composite pipe with excellent comprehensive performance.

[0004] However, although this kind of steel-plastic composite pipe with a coating can make good use of the composite pipe when in use, when the composite pipes are stacked, the compression resistance of composite pipes of different lengths cannot be adjusted well, so that when the composite pipes are stacked, the composite pipes may be squeezed against each other, reducing the quality of the composite pipes in subsequent use.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a steel-plastic composite pipe with a coating is proposed. Utility Model Content

[0006] The utility model aims to provide a steel-plastic composite pipe with a coating to solve the problem of poor pressure resistance of composite pipes of different lengths in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel-plastic composite pipe with a coating, comprising a composite pipe body, the inner wall of the composite pipe body is provided with a coating main body, the end of the composite pipe body is fitted with a positioning block, the outer wall of the positioning block is fixedly connected to a supporting block fitted with the inner wall of the composite pipe body, the outer wall of the positioning block is rotatably connected to a threaded rod, one end of the threaded rod is fixedly connected to a knob, the outer wall of the threaded rod is threadedly connected to a clamping block slidably connected to the outer wall of the positioning block, the outer wall of the support block is inserted with a reinforcing rib, the outer wall of the reinforcing rib is slidably connected to a first connecting rod, the outer wall of the first connecting rod and the reinforcing rib are provided with a placement groove at the connection position, the outer wall of the first connecting rod is provided with a first nut, and the inner wall of the first nut is threadedly connected to a first bolt fitted with the outer wall of the reinforcing rib.

[0008] Furthermore, the inner wall of the first connecting rod is slidably connected with an insertion rod, the outer wall of the insertion rod is fixedly connected with a second connecting rod located on one side of the first connecting rod, a connecting groove is provided at the connecting portion between the inner wall of the first connecting rod and the insertion rod, a second nut is provided on the outer wall of the first connecting rod, the inner wall of the second nut is threadedly connected with a second bolt slidably connected to the outer wall of the insertion rod, and a slot is provided at the connecting portion between the outer wall of the insertion rod and the second bolt.

[0009] Furthermore, the outer wall contour of the support block is matched with the inner wall contour of the composite tube body, the outer wall contour of the clamping block is matched with the outer wall contour of the composite tube body, and the outer wall contours of the support block and the clamping block are both arc-shaped.

[0010] Furthermore, the clamping block and the positioning block are slidably connected, and a fixing groove is provided at the connection portion between the outer wall of the positioning block and the clamping block.

[0011] Furthermore, the outer wall profile of the reinforcing rib is in an arc shape, and the reinforcing rib is arranged in an "I" shape on the surface of the first connecting rod, and the bottom of the first bolt is fitted with the top of the reinforcing rib.

[0012] Furthermore, a placement groove is also provided at the connection position between the outer wall of the support block and the reinforcing rib.

[0013] Furthermore, the inner wall contour of the connecting groove is matched with the outer wall contour of the insertion rod.

[0014] Furthermore, the inner wall profile of the slot is larger than the outer wall profile of the second bolt.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model provides a reinforcing rib. When the steel-plastic composite pipes are stacked daily, in order to improve the compression resistance of the composite pipes during stacking, the reinforcing ribs can be first inserted into the placement grooves of the first connecting rod and the outer wall of the support block, and the first bolt is rotated through the action of the first nut, so that the first bolt supports and positions the reinforcing ribs, and the reinforcing ribs are inserted into the inner wall of the composite pipe through the connection of the positioning block, and the knob is rotated through the rotation of the threaded rod to drive the clamping block to fix the outer wall of the composite pipe, and under the connection of the support block, the reinforcing ribs are driven to stably support the composite pipe, so as to improve the compression resistance of the composite pipe during stacking;

[0017] 2. The utility model provides a card slot. When composite pipes of different lengths are used for compression resistance by connecting reinforcing ribs through connecting rods, in order to improve the convenience of connection between the connecting rods, the insertion rod can be inserted into the inner wall of the first connecting rod through the connection of the connecting slot, and the second bolt is rotated through the action of the second nut to make the second bolt slide into the inner wall of the card slot, thereby playing the role of clamping and fixing the first connecting rod and the second connecting rod, thereby achieving the effect of adjusting the compression support for composite pipes of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the composite tube;

[0019] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the composite pipe;

[0020] Figure 3 It is a schematic diagram of the connection structure between the clamping block and the composite pipe;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection between the reinforcing rib and the composite pipe;

[0022] Figure 5 It is a schematic diagram of the position distribution structure of the plug rod and the connection groove;

[0023] Figure 6 It is a schematic diagram of the connection structure between the first connecting rod and the second connecting rod.

[0024] In the figure: 1. composite pipe body; 2. coating body; 3. positioning block; 4. support block; 5. threaded rod; 6. knob; 7. clamping block; 8. reinforcing rib; 9. first connecting rod; 10. placement groove; 11. first nut; 12. first bolt; 13. insertion rod; 14. second connecting rod; 15. connecting groove; 16. second nut; 17. second bolt; 18. slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1: Figure 1-Figure 4 As shown, a steel-plastic composite pipe with a coating comprises a composite pipe body 1, the inner wall of the composite pipe body 1 is provided with a coating main body 2, the end of the composite pipe body 1 is fitted with a positioning block 3, the outer wall of the positioning block 3 is fixedly connected with a support block 4 fitted with the inner wall of the composite pipe body 1, the outer wall of the positioning block 3 is rotatably connected with a threaded rod 5, one end of the threaded rod 5 is fixedly connected with a knob 6, the outer wall of the threaded rod 5 is threadedly connected with a clamping block 7 slidably connected to the outer wall of the positioning block 3, the outer wall of the support block 4 is inserted with a reinforcing rib 8, the outer wall of the reinforcing rib 8 is slidably connected with a first connecting rod 9, the outer wall of the first connecting rod 9 and the connecting portion of the reinforcing rib 8 are provided with a placement groove 10, the outer wall of the first connecting rod 9 is provided with a first nut 11, and the inner wall of the first nut 11 is threadedly connected with a first bolt 12 fitted with the outer wall of the reinforcing rib 8.

[0027] Furthermore, the outer wall contour of the support block 4 is adapted to the inner wall contour of the composite pipe body 1, the outer wall contour of the clamping block 7 is adapted to the outer wall contour of the composite pipe body 1, and the outer wall contours of the support block 4 and the clamping block 7 are both arc-shaped, which is beneficial for improving the supporting stability of the reinforcing rib 8 in the composite pipe by fitting the support block 4 and the clamping block 7 with the outer wall and inner wall of the composite pipe body 1.

[0028] Furthermore, the clamping block 7 and the positioning block 3 are slidably connected, and a fixing groove is provided at the connection portion between the outer wall of the positioning block 3 and the clamping block 7. The clamping block 7 forms a lifting structure through the threaded rod 5 and the positioning block 3, which is beneficial to the rotation of the threaded rod 5, driving the clamping block 7 to slide along the outer wall of the positioning block 3, thereby improving the convenience of the support block 4 and the first connecting rod 9 to be engaged and fixed on the outer wall of the composite pipe.

[0029] Furthermore, the outer wall contour of the reinforcing rib 8 is arc-shaped, and the reinforcing rib 8 is arranged in an "I" shape on the surface of the first connecting rod 9, and the bottom of the first bolt 12 is fitted between the top of the reinforcing rib 8, which is beneficial to the arrangement of the outer wall contour of the reinforcing rib 8 being arc-shaped, and the reinforcing rib 8 being arranged in an "I" shape on the surface of the first connecting rod 9, so as to adjust the compression area according to the length of the composite pipe.

[0030] Furthermore, the outer wall contour of the placement groove 10 is arc-shaped, and the reinforcing rib 8 is embedded in the inner wall of the placement groove 10. The connection portion between the outer wall of the support block 4 and the reinforcing rib 8 is also provided with a placement groove 10, which is beneficial to the arc-shaped outer wall contour of the placement groove 10, so that the reinforcing rib 8 drives the support block 4 and the first connecting rod 9 to be effectively fixed.

[0031] Embodiment 2: Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the utility model proposes a steel-plastic composite pipe with a coating. Compared with the first embodiment, as another embodiment of the utility model, the inner wall of the first connecting rod 9 is slidably connected with the plug rod 13, and the outer wall of the plug rod 13 is fixedly connected with the second connecting rod 14 located on one side of the first connecting rod 9. The connecting portion between the inner wall of the first connecting rod 9 and the plug rod 13 is provided with a connecting groove 15, and the outer wall of the first connecting rod 9 is provided with a second nut 16. The inner wall of the second nut 16 is threadedly connected with a second bolt 17 slidably connected to the outer wall of the plug rod 13. The outer wall of the plug rod 13 and the second bolt 17 are fixedly connected. A card slot 18 is provided at the connection part. When working, the card slot 18 is provided, which is beneficial when the composite pipes of different lengths are used for compression resistance through the connecting rod connecting the reinforcing rib 8. In order to improve the convenience of connection between the connecting rods, the insertion rod 13 can be inserted into the inner wall of the first connecting rod 9 through the connection of the connecting slot 15, and the second bolt 17 is rotated through the action of the second nut 16, so that the second bolt 17 slides into the inner wall of the card slot 18, which plays the role of clamping and fixing the first connecting rod 9 and the second connecting rod 14, so as to achieve the effect of adjusting the compression support for composite pipes of different lengths.

[0032] Furthermore, the inner wall profile of the connecting groove 15 is adapted to the outer wall profile of the insert rod 13, which is beneficial to improve the pre-positioning installation between the connecting rods.

[0033] Furthermore, the inner wall contour of the slot 18 is larger than the outer wall contour of the second bolt 17. The first connecting rod 9 forms a locking structure with the second connecting rod 14 through the second bolt 17 and the slot 18, which is conducive to the second bolt 17 sliding along the inner wall of the slot 18, driving the first connecting rod 9 and the second connecting rod 14 to be locked and fixed, thereby achieving the effect of adjusting the compressive support for composite pipes of different lengths.

[0034] Working principle: When using this kind of steel-plastic composite pipe with a coating, first, when the steel-plastic composite pipe is stacked daily, in order to improve the compressive resistance of the composite pipe during stacking, the reinforcing rib 8 can be first inserted into the placement groove 10 of the first connecting rod 9 and the outer wall of the support block 4, and the first bolt 12 is rotated through the action of the first nut 11, so that the first bolt 12 supports and positions the reinforcing rib 8, and through the connection of the positioning block 3, the reinforcing rib 8 is inserted into the inner wall of the composite pipe, and the knob 6 is turned to drive the clamping block 7 to fix the outer wall of the composite pipe through the rotation of the threaded rod 5, and under the connection of the support block 4, the reinforcing rib 8 is driven to stably support the composite pipe, thereby achieving the effect of improving the compressive resistance of the composite pipe during stacking.

[0035] Finally, when composite pipes of different lengths are used for compression resistance by connecting reinforcing ribs 8 through connecting rods, in order to improve the convenience of connection between the connecting rods, the insert rod 13 can be inserted into the inner wall of the first connecting rod 9 through the connection of the connecting groove 15, and the second bolt 17 is rotated through the action of the second nut 16, so that the second bolt 17 slides into the inner wall of the slot 18, which plays the role of clamping and fixing the first connecting rod 9 and the second connecting rod 14, thereby achieving the effect of adjusting the compression support for composite pipes of different lengths.

[0036] This is how the coated steel-plastic composite pipe works.

[0037] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A steel-plastic composite pipe with a coating, comprising a composite pipe body (1), characterized in that: The inner wall of the composite pipe body (1) is provided with a coating body (2); a positioning block (3) is attached to the end of the composite pipe body (1); the outer wall of the positioning block (3) is fixedly connected to a support block (4) attached to the inner wall of the composite pipe body (1); the outer wall of the positioning block (3) is rotatably connected to a threaded rod (5); one end of the threaded rod (5) is fixedly connected to a knob (6); the outer wall of the threaded rod (5) is threadedly connected to a clamping block (7) slidably connected to the outer wall of the positioning block (3); a reinforcing rib (8) is inserted into the outer wall of the support block (4); the outer wall of the reinforcing rib (8) is slidably connected to a first connecting rod (9); a placement groove (10) is provided at a connection portion between the outer wall of the first connecting rod (9) and the reinforcing rib (8); a first nut (11) is provided on the outer wall of the first connecting rod (9); the inner wall of the first nut (11) is threadedly connected to a first bolt (12) attached to the outer wall of the reinforcing rib (8).

2. The steel-plastic composite pipe with coating according to claim 1, characterized in that: The inner wall of the first connecting rod (9) is slidably connected to an insertion rod (13), and the outer wall of the insertion rod (13) is fixedly connected to a second connecting rod (14) located on one side of the first connecting rod (9). A connecting groove (15) is provided at a connection position between the inner wall of the first connecting rod (9) and the insertion rod (13), and a second nut (16) is provided on the outer wall of the first connecting rod (9). The inner wall of the second nut (16) is threadedly connected to a second bolt (17) slidably connected to the outer wall of the insertion rod (13), and a clamping groove (18) is provided at a connection position between the outer wall of the insertion rod (13) and the second bolt (17).

3. The steel-plastic composite pipe with coating according to claim 1, characterized in that: The outer wall profile of the support block (4) is adapted to the inner wall profile of the composite pipe body (1), and the outer wall profile of the clamping block (7) is adapted to the outer wall profile of the composite pipe body (1), and the outer wall profiles of the support block (4) and the clamping block (7) are both arc-shaped.

4. The steel-plastic composite pipe with coating according to claim 1, characterized in that: The clamping block (7) and the positioning block (3) are slidably connected, and a fixing groove is provided at the connection portion between the outer wall of the positioning block (3) and the clamping block (7).

5. The steel-plastic composite pipe with coating according to claim 1, characterized in that: The outer wall profile of the reinforcing rib (8) is in an arc shape, and the reinforcing rib (8) is arranged in an "I" shape on the surface of the first connecting rod (9), and the bottom of the first bolt (12) is arranged to fit the top of the reinforcing rib (8).

6. The steel-plastic composite pipe with coating according to claim 1, characterized in that: The outer wall profile of the placement groove (10) is in the shape of an arc, the reinforcing rib (8) is embedded in the inner wall of the placement groove (10), and the connection portion between the outer wall of the support block (4) and the reinforcing rib (8) is also provided with a placement groove (10).

7. The steel-plastic composite pipe with coating according to claim 2, characterized in that: The inner wall profile of the connecting groove (15) is adapted to the outer wall profile of the inserting rod (13).

8. The steel-plastic composite pipe with coating according to claim 2, characterized in that: The inner wall profile of the clamping groove (18) is larger than the outer wall profile of the second bolt (17).

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