Splicing connection device for steel-lining polyurethane composite pipe

Abstract

The utility model relates to pipeline technical field discloses the splicing connecting device of steel lining polyurethane composite pipe, including the outer cover, the outer cover right side sliding connection has three clamping blocks, three the clamping block left side screw thread connection has big bevel gear, between big bevel gear and outer cover rotatory connection, the outer cover inner wall is provided with two steel pipes, and the steel pipe between left side fixed connection with outer cover, the steel pipe surface right side is provided with three clamping slots, three clamping blocks are located in three clamping slots inside, two steel pipes adjacent side all are fixedly connected with the sealing washer, and the steel pipe inner wall is provided with multilayer composite component. In the utility model, the control lever drives the small bevel gear rotation, the small bevel gear drives the big bevel gear rotation, and when the big bevel gear rotates, the clamping block is driven to move inwards and is clamped into the clamping slot through the plane thread, so that the right composite pipe and the left composite pipe are accurately centered.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a splicing and connection device for steel-lined polyurethane composite pipes. Background Technology

[0002] In modern industrial and infrastructure construction, steel-lined polyurethane composite pipes have been widely used in many fields due to their unique advantages. They combine the high strength of steel pipes with the corrosion resistance and wear resistance of polyurethane materials, making them suitable for many scenarios such as chemical industry, mining, and sewage treatment, and used to transport various corrosive and abrasive media.

[0003] When splicing and installing existing steel-lined polyurethane composite pipes, due to complex construction site conditions and varying installation techniques and operational levels, it is difficult to ensure the alignment of the two composite pipes during the splicing process, resulting in concentricity deviation. This leads to poor fluid flow within the pipe, increased flow resistance, and reduced transport efficiency. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a splicing and connection device for steel-lined polyurethane composite pipes, which aims to improve the problem of concentricity deviation during pipe splicing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a splicing and connecting device for steel-lined polyurethane composite pipes, comprising an outer cover, three locking blocks slidably connected to the right side of the outer cover, a large bevel gear threadedly connected to the left side of the three locking blocks, the large bevel gear being rotatably connected to the outer cover, two steel pipes arranged on the inner wall of the outer cover, the steel pipe on the left being fixedly connected to the outer cover, and three slots opened on the surface of the steel pipe on the right, the three locking blocks being located inside the three slots, sealing gaskets being fixedly connected to adjacent sides of the two steel pipes, a multi-layer composite component being arranged on the inner wall of the steel pipes, a compression component being arranged on opposite sides of the two sealing gaskets, a control component being arranged on the left side of the large bevel gear, and a fastening component being arranged on the right side of the outer cover.

[0006] Preferably, both extrusion assemblies include extrusion rings, both extrusion rings are fixedly connected to two sealing gaskets, and four sliding pillars are fixedly connected to opposite sides of both extrusion rings, with elastic components provided on the surfaces of the sliding pillars.

[0007] Preferably, the control component includes a small bevel gear, which meshes with a large bevel gear, is rotatably connected to the outer cover, and has a control lever fixedly connected to the rear side of the small bevel gear.

[0008] Preferably, the multilayer composite component includes a flame-retardant layer, which is fixedly connected to the steel pipe, and a lining layer is fixedly connected to the inner wall of the flame-retardant layer.

[0009] Preferably, the fastening assembly includes two connecting plates, the left connecting plate being fixedly connected to the outer cover, and the right connecting plate being fixedly connected to the right steel pipe, and both connecting plates are internally threaded with bolts.

[0010] Preferably, the large bevel gear has a planar thread on its right side, and the three locking blocks have planar threads on their left sides.

[0011] Preferably, each of the plurality of elastic components includes a fixing cover, the plurality of fixing covers are slidably connected to the sliding column, the inner wall of each of the plurality of fixing covers is fixedly connected to a spring, and the plurality of springs are fixedly connected to the plurality of sliding columns.

[0012] Preferably, the flame-retardant layer is made of aluminum hydroxide and the lining layer is made of polyurethane.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the rotating control lever drives the small bevel gear to rotate, and the small bevel gear drives the large bevel gear to rotate. When the large bevel gear rotates, it drives the locking block to move inward synchronously through the planar thread and lock into the locking groove, thereby accurately aligning the right composite pipe with the left composite pipe, thus solving the problem of concentricity deviation during pipe installation.

[0015] 2. In this utility model, the sliding column drives the extrusion ring to apply pressure to the sealing gasket under the action of the spring. When the sealing gasket shrinks due to temperature changes, the extrusion ring provides auxiliary sealing to the sealing gasket, thereby solving the problem that the sealing structure loses its sealing function due to temperature changes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the splicing and connection device for the steel-lined polyurethane composite pipe proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the control ring of the splicing and connection device for the steel-lined polyurethane composite pipe proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the slot for the splicing and connecting device of the steel-lined polyurethane composite pipe proposed in this utility model.

[0019] Figure 4 A schematic diagram of the bevel gear of the splicing and connecting device for the steel-lined polyurethane composite pipe proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the connecting plate of the splicing and connecting device for the steel-lined polyurethane composite pipe proposed in this utility model.

[0021] Figure 6This is a schematic diagram of the fixing cover of the splicing and connecting device for the steel-lined polyurethane composite pipe proposed in this utility model.

[0022] Figure 7 This is a schematic diagram of the sliding column of the splicing and connecting device for the steel-lined polyurethane composite pipe proposed in this utility model.

[0023] Legend:

[0024] 1. Outer cover; 2. Multi-layer composite component; 201. Flame retardant layer; 202. Lining layer; 3. Control component; 301. Small bevel gear; 302. Control lever; 4. Elastic component; 401. Fixing cover; 402. Spring; 5. Extrusion component; 501. Sliding column; 502. Extrusion ring; 6. Fastening component; 601. Connecting plate; 602. Bolt; 7. Clamping block; 8. Sealing gasket; 9. Large bevel gear; 10. Steel pipe; 11. Slot. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figures 1-3 This utility model provides an embodiment of a splicing and connecting device for steel-lined polyurethane composite pipes, including an outer cover 1. Three locking blocks 7 are slidably connected to the right side of the outer cover 1, and a large bevel gear 9 is threadedly connected to the left side of the three locking blocks 7. The large bevel gear 9 is rotatably connected to the outer cover 1. Two steel pipes 10 are provided on the inner wall of the outer cover 1. The steel pipe 10 on the left side is fixedly connected to the outer cover 1, and the steel pipe 10 on the right side has three slots 11. The three locking blocks 7 are located inside the three slots 11. Sealing gaskets 8 are fixedly connected to adjacent sides of the two steel pipes 10. Multi-layer composite components 2 are provided on the inner wall of the steel pipes 10. Extrusion components 5 are provided on opposite sides of the two sealing gaskets 8. A control component 3 is provided on the left side of the large bevel gear 9, and a fastening component 6 is provided on the right side of the outer cover 1.

[0027] Specifically, the outer cover 1 provides mounting positions for the large bevel gear 9, the small bevel gear 301 and the locking block 7 connected thereto. The outer cover 1 has a sliding groove on the right side, which allows the three locking blocks 7 to slide in the sliding groove. The left side of the locking block 7 is machined with an internal thread that matches the right side plane thread of the large bevel gear 9, so that the locking block 7 can retract inward when the large bevel gear 9 rotates.

[0028] The large bevel gear 9 is rotatably connected to the outer cover 1 via a bearing. The shape and size of the three slots 11 are consistent with the head of the locking block 7, so that the locking block 7 can be locked into the slots 11 to fix the steel pipe 10 and make the two steel pipes 10 aligned. The sealing gasket 8 is made of rubber material. After the two steel pipes 10 are connected, the sealing gasket 8 fills the tiny gap between the two steel pipes 10 to prevent media leakage.

[0029] Reference Figure 7 Both extrusion components 5 include extrusion rings 502, both extrusion rings 502 are fixedly connected to two sealing gaskets 8, and four sliding pillars 501 are fixedly connected to opposite sides of both extrusion rings 502, and elastic components 4 are provided on the surface of the multiple sliding pillars 501.

[0030] Specifically, the compression ring 502 is an annular structure. The compression ring 502 and the sealing gasket 8 are bonded together with strong waterproof adhesive to ensure that they will not separate under stress. On the side of the compression ring 502 away from the sealing gasket 8, four sliding pillars 501 are evenly fixedly connected along the circumference. The sliding pillars 501 provide guidance for the movement of the compression ring 502, so that it can apply pressure to the sealing gasket 8 in the horizontal direction under the action of the elastic component 4.

[0031] Reference Figure 4 The control component 3 includes a small bevel gear 301, which meshes with a large bevel gear 9 and is rotatably connected to the outer cover 1. A control lever 302 is fixedly connected to the rear side of the small bevel gear 301.

[0032] Specifically, the parameters of the small bevel gear 301 and the large bevel gear 9 in the control component 3 are matched to achieve meshing transmission. The small bevel gear 301 is fixedly connected to the control rod 302. When the control rod 302 is rotated, the small bevel gear 301 can rotate synchronously, thereby driving the large bevel gear 9 to rotate, thus realizing the control of the movement of the locking block 7.

[0033] Reference Figure 6 The multi-layer composite component 2 includes a flame-retardant layer 201, which is fixedly connected to the steel pipe 10, and a lining layer 202 is fixedly connected to the inner wall of the flame-retardant layer 201.

[0034] Specifically, the multi-layer composite component 2 is located on the inner wall of the steel pipe 10. From the outside to the inside, it consists of a flame-retardant layer 201 and a lining layer 202. The flame-retardant layer 201 is made of aluminum hydroxide and is fixed to the inner wall of the steel pipe 10 by hot pressing. Aluminum hydroxide has flame-retardant properties. When it encounters high temperature or fire, it can decompose and absorb heat, reduce the surrounding temperature, and release a large amount of water vapor to dilute the concentration of combustible gas and improve the fire safety of the pipeline.

[0035] The lining layer 202 is made of polyurethane and is fixed to the inner wall of the flame-retardant layer 201 by coating. Polyurethane has corrosion resistance, wear resistance and low coefficient of friction, which can effectively protect the steel pipe 10 from the erosion and wear of the internal transport medium, while reducing the resistance of the medium when it flows in the pipe and improving the transport efficiency.

[0036] Reference Figure 5 The fastening assembly 6 includes two connecting plates 601. The left connecting plate 601 is fixedly connected to the outer cover 1, and the right connecting plate 601 is fixedly connected to the right steel pipe 10. Both connecting plates 601 are threaded with bolts 602.

[0037] Specifically, the connecting plate 601 on the left is fixed to the outer cover 1 by welding, and the connecting plate 601 on the right is also fixed to the steel pipe 10 on the right by welding to enhance the connection strength. The two connecting plates 601 are connected by bolts 602 to realize the connection of the composite pipe.

[0038] Reference Figure 2 The large bevel gear 9 has a flat thread on its right side, and the three locking blocks 7 all have flat threads on their left sides.

[0039] Specifically, the pitch and thread angle of the planar threads of the large bevel gear 9 and the locking block 7 are consistent, so that when the large bevel gear 9 rotates, the three locking blocks 7 can synchronously retract towards the center along the sliding groove on the right side of the outer cover 1, so that the locking blocks 7 can be locked into the locking groove 11.

[0040] Reference Figure 7 Each of the multiple elastic components 4 includes a fixing cover 401, and each fixing cover 401 is slidably connected to a sliding column 501. Each fixing cover 401 has a spring 402 fixedly connected to its inner wall, and each spring 402 is fixedly connected to a sliding column 501.

[0041] Specifically, the fixed cover 401 is fixedly connected to the outer cover 1 by welding. The spring 402 always applies a spring force to the slide column 501 in the direction of the compression ring 502. When the sealing gasket 8 shrinks due to factors such as temperature changes, the spring 402 can push the slide column 501 and the compression ring 502 to continuously apply pressure to the sealing gasket 8, thereby maintaining the sealing performance of the sealing gasket 8.

[0042] Reference Figure 6 The flame retardant layer 201 is made of aluminum hydroxide, and the lining layer 202 is made of polyurethane.

[0043] Specifically, the flame retardant layer 201 is made of aluminum hydroxide. Aluminum hydroxide has a low decomposition temperature. When it encounters a fire or high temperature environment, it will decompose rapidly and absorb a large amount of heat, reducing the temperature of the pipe surface and thus slowing down the spread of the fire. At the same time, the water vapor released during the decomposition process can dilute the surrounding oxygen and flammable gas concentration, forming a physical isolation layer to further prevent the combustion reaction from proceeding.

[0044] The lining layer 202 is made of polyurethane, a high-molecular synthetic material that can resist corrosion from various chemical media. It has a smooth surface and a low coefficient of friction, which allows the media transported inside to flow more smoothly in the pipeline and reduces energy loss. In addition, polyurethane has good wear resistance and can withstand long-term scouring and friction from the media, extending the service life of the pipeline.

[0045] Working principle: When it is necessary to install and connect composite pipes, rotate the control rod 302. The control rod 302 drives the small bevel gear 301 to rotate. The small bevel gear 301 drives the large bevel gear 9 to rotate synchronously. When the large bevel gear 9 rotates, it can drive the three locking blocks 7 to retract synchronously towards the center through the planar thread and lock into the three locking grooves 11 opened on the surface of the steel pipe 10, so as to realize the centering connection of the two composite pipes and solve the problem of concentricity deviation during pipe installation.

[0046] After installation, the spring 402 is in a compressed state. At this time, the spring 402 applies a spring force to the slide 501 towards the compression ring 502. The compression ring 502 then compresses the sealing gasket 8, replenishing the sealing pressure reduced due to the shrinkage of the sealing gasket 8. This allows the sealing gasket 8 to continue to perform its sealing function after shrinkage through the spring force, thereby solving the problem of the sealing structure losing its sealing function due to temperature changes.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Splicing connection device for steel lined polyurethane composite pipes comprising a casing (1), characterized in that: The outer cover (1) has three sliding blocks (7) on its right side. The three blocks (7) are threaded with a large bevel gear (9) on their left side. The large bevel gear (9) is rotatably connected to the outer cover (1). The inner wall of the outer cover (1) is provided with two steel pipes (10). The steel pipe (10) on the left side is fixedly connected to the outer cover (1). The steel pipe (10) on the right side has three slots (11) on its surface. The three blocks (7) are located inside the three slots (11). Sealing gaskets (8) are fixedly connected to adjacent sides of the two steel pipes (10). The inner wall of the steel pipe (10) is provided with a multi-layer composite component (2). The two sealing gaskets (8) are provided with compression components (5) on opposite sides. A control component (3) is provided on the left side of the large bevel gear (9). A fastening component (6) is provided on the right side of the outer cover (1).

2. The splicing connection device of a steel-lining polyurethane composite pipe according to claim 1, characterized by: Both of the extrusion assemblies (5) include an extrusion ring (502), both of the extrusion rings (502) are fixedly connected to two sealing gaskets (8), and four sliding pillars (501) are fixedly connected to opposite sides of both extrusion rings (502), and elastic components (4) are provided on the surface of each of the sliding pillars (501).

3. The splicing connection device of a steel lined polyurethane composite pipe according to claim 1, characterized in that: The control component (3) includes a small bevel gear (301), which meshes with a large bevel gear (9), and is rotatably connected to the outer cover (1). A control lever (302) is fixedly connected to the rear side of the small bevel gear (301).

4. The splicing connection device of a steel lined polyurethane composite pipe according to claim 1, characterized in that: The multi-layer composite component (2) includes a flame-retardant layer (201), which is fixedly connected to the steel pipe (10), and a lining layer (202) is fixedly connected to the inner wall of the flame-retardant layer (201).

5. The splicing and connection device for steel-lined polyurethane composite pipes according to claim 1, characterized in that: The fastening assembly (6) includes two connecting plates (601). The connecting plate (601) on the left is fixedly connected to the outer cover (1), and the connecting plate (601) on the right is fixedly connected to the steel pipe (10) on the right. Both connecting plates (601) are threaded with bolts (602).

6. The splicing and connection device for steel-lined polyurethane composite pipes according to claim 1, characterized in that: The large bevel gear (9) has a planar thread on its right side, and the three locking blocks (7) have planar threads on their left sides.

7. The splicing and connection device for steel-lined polyurethane composite pipes according to claim 2, characterized in that: Each of the multiple elastic components (4) includes a fixing cover (401), each of the multiple fixing covers (401) is slidably connected to a sliding column (501), and each of the multiple fixing covers (401) has a spring (402) fixedly connected to its inner wall, and each of the multiple springs (402) is fixedly connected to the multiple sliding columns (501).

8. The splicing and connection device for steel-lined polyurethane composite pipes according to claim 3, characterized in that: The flame-retardant layer (201) is made of aluminum hydroxide, and the lining layer (202) is made of polyurethane.

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