Outer coating type double-wall spiral corrugated pipe

Abstract

The utility model relates to the technical field of spiral corrugated pipes, and discloses an outer coating type double-wall spiral corrugated pipe which comprises a fixing disc, an outer coating protection pipe and an inner corrugated pipe, according to the outer coating type double-wall spiral corrugated pipe, when a clamping block exceeds the edge of a flange plate, a shifting block is loosened, a compressed reset spring can push a positioning block to reset, and the inner corrugated pipe is fixed to the fixing disc. And an arc-shaped spring can push a shifting block to reset, so that a clamping block and clamping blocks gradually contract and gradually move in the direction close to the fixed disc, then the flange plate is clamped, finally, bolts penetrate through mounting holes to firmly mount the flange plate and the clamping blocks, and the clamping blocks arranged in a circumferential array abut against the edge of the circular flange, so that the flange plate is firmly clamped. The axis of the double-wall spiral corrugated pipe and the axis of the flange plate needing to be connected are kept consistent, installation gaps caused by axis deviation are prevented, the clamping blocks are clamped into the rear portion of the flange plate, then the flange plate is connected through the bolts, and the connecting position can be tighter.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral corrugated pipes, in particular to an outer-coated double-wall spiral corrugated pipe. Background Art

[0002] The outer-clad double-wall spiral corrugated pipe is a corrugated pipe with a double-wall structure, which is characterized by an outer coating added to the outer surface of the inner pipe. This design can provide higher strength and pressure resistance, and is suitable for some industrial applications that require high pressure, high temperature, corrosive media, etc. The outer-clad double-wall spiral corrugated pipe is usually composed of an inner pipe, an outer coating and a corrugated reinforcement layer. The inner pipe is generally made of corrosion-resistant and high-temperature resistant materials, such as stainless steel, high-temperature alloys, etc. The outer coating can be made of wear-resistant and corrosion-resistant materials, such as polyurethane, nylon, etc. The corrugated reinforcement layer is located between the inner pipe and the outer coating, which can increase the overall rigidity and strength.

[0003] However, most bellows are directly connected through flanges. However, it is not easy to align the axis of the pipe and the flange when installing some longer pipes. If an offset occurs, the bolts may be offset during installation, resulting in an unstable installation. In addition, the flange on the bellows must be the same size as the connected pipe flange, otherwise it cannot be installed accurately. Utility Model Content

[0004] The purpose of the utility model is to provide an outer-clad double-wall spiral corrugated pipe to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: an outer-covered double-wall spiral corrugated pipe, comprising a fixed disk, an outer-covered protective tube and an inner corrugated tube, the left sides of the outer-covered protective tube and the inner corrugated tube are fixedly connected to the right side of the fixed disk, and a control unit is arranged inside the fixed disk, and the control unit comprises:

[0006] A rotating plate, the rotating plate passes through the fixed disk, and the rotating plate is rotatably connected to the inner wall of the fixed disk. A transmission groove is opened on the surface of the rotating plate. When the toggle block is toggled, the toggle block slides along the arc groove and the arc rod. When the toggle block is toggled, the rotating plate is driven to rotate together. The side of the rotating plate is fixedly connected with the toggle block;

[0007] An arc-shaped groove, the arc-shaped groove is opened on the side of the fixed plate, an arc-shaped rod is fixedly connected to the inner side of the arc-shaped groove, the arc-shaped rod passes through the toggle block, and an arc-shaped spring is fixedly connected between the toggle block and the inner side of the arc-shaped groove;

[0008] A slide groove, wherein the slide groove is opened on the inner side of the fixed plate, a slider is slidably connected to the inner side of the slide groove, a linkage rod is fixedly connected to the side of the slider close to the rotating plate, a positioning block is fixedly connected to the side of the slider, a clamping block is fixedly connected to the side of the linkage rod away from the slider, and the slider fixedly connected to the right side of the linkage rod is located in the slide groove, so the slide groove will limit the slider.

[0009] Preferably, a positioning groove is provided on the inner side of the slide groove, and the positioning block passes through the positioning groove and is slidably connected.

[0010] Preferably, a positioning rod is fixedly connected to the inner side of the positioning groove, and when the clamping block expands outward due to the sliding block, the positioning block fixedly connected to the side of the sliding block will slide along the positioning rod. The positioning rod passes through the positioning block, and a return spring is fixedly connected between the positioning block and the inner side of the positioning groove.

[0011] Preferably, a circular hole is provided on the inner side of the clamping block, a support rod passes through the inner side of the circular hole, a clamping block is fixedly connected to the left side of the support rod, and a clamping spring is fixedly connected between the clamping block and the inner side of the circular hole.

[0012] Preferably, the number of the clamping blocks is six groups, and the six groups of clamping blocks are respectively arranged in a circular array with the center line of the fixed disk as the axis. When the toggle block is loosened to reset the clamping block and the clamping block, the edge of the flange will contact the inner side of the clamping block, forcing the clamping block to pull the support rod. A mounting hole is opened on the surface of the clamping block.

[0013] Preferably, the linkage rod passes through the transmission groove, and when the rotating plate rotates, the linkage rod inserted into the transmission groove will be resisted by the arc-shaped part of the transmission groove, thereby causing the linkage rod to slide.

[0014] Preferably, the positioning groove is obliquely opened on the inner side of the slide groove, and when the clamping block exceeds the edge of the flange, the toggle block is released, so that the clamping block and the clamping block gradually shrink and gradually move toward the fixed plate.

[0015] Compared with the prior art, the utility model provides an outer-covered double-wall spiral corrugated pipe, which has the following beneficial effects:

[0016] 1. For the outer-covered double-wall spiral bellows, when the clamping block exceeds the edge of the flange, the toggle block is loosened, and the compressed reset spring pushes the positioning block to reset, and the arc spring pushes the toggle block to reset, so that the clamping block and the clamping block gradually shrink and gradually move toward the fixed plate, thereby clamping the flange, and finally the flange and the clamping block are firmly installed through the mounting hole by bolts, and the clamping blocks arranged in a circumferential array abut against the edge of the circular flange, so that the double-wall spiral bellows is consistent with the axis of the flange to be connected, to prevent the axis from shifting and causing a gap in the installation, and the clamping block is clamped into the rear of the flange and then connected by bolts, so that the connection can be tighter.

[0017] 2. When the outer-covered double-wall spiral corrugated pipe encounters some thicker flanges, when the toggle block is loosened to reset the clamping block and the clamping block, the edge of the flange will contact the inner side of the clamping block, forcing the clamping block to pull the support rod. At this time, the clamping spring is tightened to make the clamping block tighten the thicker flange, so that it can adapt to the installation of flanges of more diameters and thicknesses, which is convenient, fast and adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer protective tube and the inner corrugated tube of the utility model;

[0020] Figure 3 This is a top view of the structure of the fixed plate of the utility model;

[0021] Figure 4 This is a left-side structural schematic diagram of the fixed disk of the utility model;

[0022] Figure 5 This is a schematic diagram of the enlarged cross-sectional structure of the fixed disk of the utility model;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the clamping block of the utility model.

[0024] In the figure: 1. fixed plate; 2. control part; 21. rotating plate; 22. transmission groove; 23. toggle block; 24. arc groove; 25. arc rod; 26. arc spring; 27. slide groove; 28. slider; 29. ​​linkage rod; 210. positioning block; 211. positioning groove; 212. positioning rod; 213. return spring; 214. clamping block; 215. round hole; 216. support rod; 217. clamping block; 218. clamping spring; 219. mounting hole; 3. outer protective tube; 4. internal bellows. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6As shown, the utility model provides a technical solution: an outer-covered double-wall spiral corrugated pipe, comprising a fixed disk 1, an outer-covered protective tube 3 and an internal corrugated tube 4, the left sides of the outer-covered protective tube 3 and the internal corrugated tube 4 are fixedly connected to the right side of the fixed disk 1, and a control unit 2 is arranged inside the fixed disk 1, and the control unit 2 comprises: a rotating plate 21, a transmission groove 22, a toggle block 23, an arc groove 24, an arc rod 25, an arc spring 26, a slide groove 27, a slider 28, a linkage rod 29, a positioning block 210, a positioning groove 211, a positioning rod 212, a reset spring 213, a clamping block 214, a round hole 215, a support rod 216, a clamping block 217, a clamping spring 218, and a mounting hole 219.

[0026] The rotating plate 21 passes through the fixed disk 1, and the rotating plate 21 is rotatably connected to the inner wall of the fixed disk 1. A transmission groove 22 is provided on the surface of the rotating plate 21. When connecting the pipeline, the fixed disk 1 is aligned with the flange to be installed, and the toggle block 23 is toggled. The toggle block 23 will slide along the arc groove 24 and the arc rod 25. At this time, the arc spring 26 will be compressed, and the toggle block 23 will drive the rotating plate 21 to rotate together when being toggled. The side of the rotating plate 21 is fixedly connected with the toggle block 23, and the arc groove 24 is provided on the side of the fixed disk 1. The inner side of the arc groove 24 is fixedly connected with the arc rod 25, and the arc rod 25 passes through the toggle block 23. The toggle block 23 and the arc groove An arc spring 26 is fixedly connected between the inner sides of the slide 24, a slide slot 27 is provided on the inner side of the fixed plate 1, a slider 28 is slidably connected to the inner side of the slide slot 27, a linkage rod 29 is fixedly connected to the side of the slider 28 close to the rotating plate 21, a positioning block 210 is fixedly connected to the side of the slider 28, a clamping block 214 is fixedly connected to the side of the linkage rod 29 away from the slider 28, and the slider 28 fixedly connected to the right side of the linkage rod 29 is located in the slide slot 27, so the slide slot 27 will limit the slider 28, and then the linkage rod 29 will slide along the slide slot 27 due to the limitation of the slider 28, so that the linkage rod 29 drives the clamping block 214 to expand outward. A positioning slot 211 is provided on the inner side of the slide slot 27, and the positioning block 210 passes through the positioning slot 211 and is slidably connected. A positioning rod 212 is fixedly connected to the inner side of the positioning groove 211, and when the clamping block 214 expands outward due to the slider 28, the positioning block 210 fixedly connected to the side of the slider 28 will slide along the positioning rod 212, the positioning rod 212 penetrates the positioning block 210, and a return spring 213 is fixedly connected between the positioning block 210 and the inner side of the positioning groove 211. A circular hole 215 is provided on the inner side of the clamping block 214, a support rod 216 penetrates the inner side of the circular hole 215, a clamping block 217 is fixedly connected to the left side of the support rod 216, and a clamping spring 218 is fixedly connected between the clamping block 217 and the inner side of the circular hole 215. There are six groups of clamping blocks 217, and the six groups of clamping blocks 217 are arranged in a circular array with the center line of the fixed disk 1 as the axis. When the toggle block 23 is loosened to reset the clamping block 214 and the clamping block 217, the edge of the flange will contact the inner side of the clamping block 217, forcing the clamping block 217 to pull the support rod 216. At this time, the clamping spring 218 is tightened to make the clamping block 217 tighten the thicker flange. The surface of the clamping block 217 is provided with a mounting hole 219. The linkage rod 29 penetrates the transmission groove 22. When the rotating plate 21 rotates, it will drive the transmission groove 22 to rotate with the center of the rotating plate 21 as the axis, and the linkage rod 29 inserted into the transmission groove 22 will be resisted by the arc portion of the transmission groove 22, thereby causing the linkage rod 29 to slide.The positioning groove 211 is located on the inner side of the slide groove 27 and is inclined. Because of the inclined positioning groove 211, the clamping block 217 gradually moves away from the fixed disk 1, and the reset spring 213 will be compressed at this time. When the clamping block 217 exceeds the edge of the flange, the toggle block 23 is released, and the compressed reset spring 213 will push the positioning block 210 to reset, and the arc spring 26 will push the toggle block 23 to reset, so that the clamping block 214 and the clamping block 217 gradually shrink and gradually move toward the fixed disk 1.

[0027] Based on the above embodiment, when connecting the pipeline, the fixed plate 1 is aligned with the flange plate to be installed, and the toggle block 23 is toggled. The toggle block 23 will slide along the arc groove 24 and the arc rod 25. At this time, the arc spring 26 will be compressed, and the toggle block 23 will drive the rotating plate 21 to rotate together when being toggled. When the rotating plate 21 rotates, it will drive the transmission groove 22 to rotate with the center of the rotating plate 21 as the axis, and the linkage rod 29 inserted into the transmission groove 22 will be resisted by the arc portion of the transmission groove 22, thereby causing the linkage rod 29 to slide, but the slider 28 fixedly connected to the right side of the linkage rod 29 is located in the slide groove 27, so the slide groove 27 will limit the slider 28, and then the linkage rod 29 is limited by the slider 28 so that the linkage rod 29 and the slider 28 slide along the slide groove 27, so that the linkage rod 29 drives the clamping block 214 to expand outward, and when the clamping block 214 expands outward due to the slider 28, the fixed The positioning block 210 will slide along the positioning rod 212, and because of the inclined positioning groove 211, the clamping block 217 will gradually move away from the fixed disk 1, and the reset spring 213 will be compressed at this time. When the clamping block 217 exceeds the edge of the flange, the toggle block 23 is released, and the compressed reset spring 213 will push the positioning block 210 to reset, and the arc spring 26 will push the toggle block 23 to reset, so that the clamping block 214 and the clamping block 217 will gradually shrink and gradually move toward the fixed disk 1, thereby clamping the flange, and finally the flange and the clamping block 217 are firmly installed by passing the bolts through the mounting holes 219. The clamping blocks 217 arranged in a circumferential array contact the edge of the circular flange, so that the double-wall spiral bellows is consistent with the axis of the flange to be connected, to prevent the axis deviation from causing a gap in the installation, and the clamping block 217 is clamped into the back of the flange and then connected by bolts, so that the connection can be tighter.

[0028] When encountering some thicker flanges, when the toggle block 23 is loosened to reset the clamping block 214 and the clamping block 217, the edge of the flange will contact the inner side of the clamping block 217, forcing the clamping block 217 to pull the support rod 216. At this time, the clamping spring 218 is tightened to make the clamping block 217 tighten the thicker flange, so that it can adapt to the installation of flanges of more diameters and thicknesses, which is convenient, fast and highly adaptable.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An outer-clad double-wall spiral corrugated pipe, comprising a fixed plate (1), an outer-clad protective pipe (3) and an inner corrugated pipe (4), characterized in that: The left sides of the outer protective tube (3) and the inner corrugated tube (4) are both fixedly connected to the right side of the fixed disk (1). A control unit (2) is arranged inside the fixed disk (1). The control unit (2) comprises: A rotating plate (21), the rotating plate (21) passes through the fixed disk (1), and the rotating plate (21) is rotatably connected to the inner wall of the fixed disk (1), a transmission groove (22) is provided on the surface of the rotating plate (21), and a toggle block (23) is fixedly connected to the side surface of the rotating plate (21); An arc-shaped groove (24), the arc-shaped groove (24) is provided on a side surface of the fixed plate (1), an arc-shaped rod (25) is fixedly connected to the inner side of the arc-shaped groove (24), the arc-shaped rod (25) passes through the toggle block (23), and an arc-shaped spring (26) is fixedly connected between the toggle block (23) and the inner side of the arc-shaped groove (24); A slide groove (27), wherein the slide groove (27) is arranged on the inner side of the fixed plate (1), a slider (28) is slidably connected to the inner side of the slide groove (27), a linkage rod (29) is fixedly connected to the side of the slider (28) close to the rotating plate (21), a positioning block (210) is fixedly connected to the side of the slider (28), and a clamping block (214) is fixedly connected to the side of the linkage rod (29) away from the slider (28).

2. The outer-clad double-wall spiral corrugated pipe according to claim 1, characterized in that: A positioning groove (211) is provided on the inner side of the slide groove (27), and the positioning block (210) passes through the positioning groove (211) and is slidably connected thereto.

3. The outer-clad double-wall spiral corrugated pipe according to claim 2, characterized in that: A positioning rod (212) is fixedly connected to the inner side of the positioning groove (211), the positioning rod (212) passes through the positioning block (210), and a return spring (213) is fixedly connected between the positioning block (210) and the inner side of the positioning groove (211).

4. The outer-clad double-wall spiral corrugated pipe according to claim 1, characterized in that: A circular hole (215) is provided on the inner side of the clamping block (214), a support rod (216) passes through the inner side of the circular hole (215), a clamping block (217) is fixedly connected to the left side of the support rod (216), and a clamping spring (218) is fixedly connected between the clamping block (217) and the inner side of the circular hole (215).

5. The outer-clad double-wall spiral corrugated pipe according to claim 4, characterized in that: The number of the clamping blocks (217) is six groups, and the six groups of the clamping blocks (217) are respectively arranged in a circular array with the center line of the fixed disk (1) as the axis, and the surface of the clamping blocks (217) is provided with mounting holes (219).

6. The outer-clad double-wall spiral corrugated pipe according to claim 1, characterized in that: The linkage rod (29) passes through the transmission groove (22).

7. The outer-clad double-wall spiral corrugated pipe according to claim 2, characterized in that: The positioning groove (211) is located on the inner side of the sliding groove (27) and is opened obliquely.

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