Eccentricity prevention device for sleeve of thermal insulation pipe

Abstract

An anti-eccentricity device for a heat preservation pipe sleeve comprises a flexible ring, a supporting ring is arranged on the outer side of the flexible ring, three supporting rods are slidably connected into the supporting ring, one end of the corresponding supporting rod is fixedly connected with the flexible ring, the other end of the corresponding supporting rod is slidably connected with a telescopic rod, and a rolling wheel is arranged at the end of the telescopic rod. According to the utility model, an original anti-eccentricity device is replaced by the anti-eccentricity device, so that a series of problems caused by manufacturing heat-insulating layers with different thicknesses are fundamentally solved, the economic benefit is more quickly improved, the manufacturing process is simplified, the labor intensity is reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of thermal insulation pipes, and in particular to an anti-eccentricity device for a thermal insulation pipe casing. Background Art

[0002] The insulation pipe is suitable for conveying various media within the temperature range of -50℃ to 150℃. It is widely used in central heating, cooling and hot oil transportation, as well as insulation and cooling projects in greenhouses, cold storages, coal mines, petroleum, chemical and other industries.

[0003] The insulated pipe is composed of a polyethylene pipe, an insulation layer, and a steel pipe. The thickness of the insulation layer varies when conveying different media. During production, a pipe threading machine is used to thread the steel pipe into the polyethylene pipe, and then the space is filled with polyurethane material to form an insulation layer. In order to ensure uniform thickness of the insulation layer, some anti-eccentricity brackets need to be fixed on the steel pipe.

[0004] Existing anti-eccentricity brackets usually use manual methods to first string together wooden blocks of uniform size through iron wire, and then tie them to steel pipes and use a pipe threading machine to put the outer protective pipe on the steel pipe. This method is very cumbersome in the process of making wooden blocks, and when making insulation layers of different thicknesses, it is necessary to re-make wooden blocks of corresponding heights, which is very cumbersome, time-consuming and labor-intensive, and very unfavorable for production. Utility Model Content

[0005] In order to solve the above-mentioned problems, the utility model provides an anti-eccentricity device for a thermal insulation pipe casing.

[0006] The utility model is realized through the following technical solutions:

[0007] An anti-eccentricity device for an insulation pipe casing includes a flexible ring, a support ring is provided on the outside of the flexible ring, three support rods are slidably connected inside the support ring, one end of each support rod is fixedly connected to the flexible ring, and the other end is slidably connected to a telescopic rod, and a roller is provided at the end of the telescopic rod.

[0008] Further optionally, sliding grooves are provided on both sides of the corresponding support rods, and the sliding grooves are slidably connected to the bosses of the support ring.

[0009] Further optionally, a baffle is provided at the upper portion of the end of the corresponding support rod, a tension spring is connected and fixed to the baffle, and the other end of the tension spring is connected and fixed to the outer side of the support ring.

[0010] Further optionally, top screws for fastening the telescopic rod are provided on the left and right sides of the corresponding support rods.

[0011] Further optionally, the flexible ring is made of rubber material.

[0012] Compared with the existing technology, the beneficial effects of the present invention are: by replacing the original anti-eccentricity device with the present invention, a series of problems caused by the production of different insulation layer thicknesses are fundamentally solved, the economic benefits are improved more quickly, the production process is simplified, the labor intensity is reduced, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a partially enlarged schematic diagram of the present invention;

[0015] In the figure: polyethylene tube 1, steel tube 2, support ring 3, flexible ring 4, support rod 5, slide 6, telescopic rod 7, roller 8, top screw 9, tension spring 10, top screw 11, boss 12. DETAILED DESCRIPTION

[0016] The present invention is described in further detail below with reference to the accompanying drawings and specific embodiments:

[0017] like Figure 1 、 2 As shown, an anti-eccentricity device for the insulation pipe casing includes a flexible ring 4, a support ring 3 is provided on the outside of the flexible ring 4, three support rods 5 are slidably connected inside the support ring 3, one end of the corresponding support rod 5 is fixedly connected to the flexible ring 4, and the other end is slidably connected to a telescopic rod 7, and a roller 8 is provided at the end of the telescopic rod 7.

[0018] like Figure 1 、 2 As shown, sliding grooves 6 are provided on both sides of the corresponding support rods 5 , and the sliding grooves 6 are slidably connected to the bosses 12 of the support ring 3 .

[0019] like Figure 1 As shown, a baffle 9 is provided at the upper portion of the end of the corresponding support rod 5 , a tension spring 10 is connected and fixed to the baffle 9 , and the other end of the tension spring 10 is connected and fixed to the outer side of the support ring 3 .

[0020] like Figure 1 、 2 As shown, top screws 11 for fastening the telescopic rod 7 are provided on the left and right sides of the corresponding support rod 5.

[0021] like Figure 1 、 2 As shown, the flexible ring 4 is made of rubber material.

[0022] The implementation principle of the anti-eccentricity device for the insulation pipe sleeve of the embodiment of the present application is as follows:

[0023] When making the insulation pipe, first install multiple anti-eccentricity devices on the steel pipe 4 to prevent the steel pipe 4 and the polyethylene pipe 1 from eccentricity, resulting in uneven thickness of the insulation layer;

[0024] During installation, first, the flexible rings 4 of each anti-eccentricity device are placed on the steel pipe 2 at a certain distance (determined according to the on-site conditions) and the flexible rings 4 are expanded. After the placement, the corresponding support rods 3 will slide outward from the center of the steel pipe 2 by a certain distance (the sliding distance is the minimum thickness of the standard insulation layer). At the same time, the tension springs 10 will be stretched to generate a rebound force, which will make the bottom end of the support rod 3 fit tightly with the steel pipe 4 to prevent shaking.

[0025] When making the insulated pipe with the minimum thickness, the steel pipe 2 with the anti-eccentric device is transported into the polyethylene pipe 1 through external equipment. When transported into the polyethylene pipe 1, the corresponding rollers 8 will stick to the inner wall of the polyethylene pipe 1. At the same time, when the steel pipe 2 moves inward, the rollers 8 start to roll at the same time to prevent large friction with the polyethylene pipe 1. When the steel pipe 2 is completely transported into the polyethylene pipe 1, the insulation material is filled into its cavity.

[0026] When making an insulation pipe with a thickness greater than the minimum, it is necessary to loosen the corresponding top screw 9 and then pull out the corresponding telescopic rod 7. After pulling all the rollers 8 to fit tightly against the inner wall of the polyethylene tube 1, tighten the top screw 11 to prevent the telescopic rod 7 from falling back. After locking, continue to convey the steel pipe 2 into the polyethylene tube 1 according to the same steps.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An anti-eccentricity device for a thermal insulation pipe casing, characterized in that: The invention comprises a flexible ring (4), a support ring (3) is arranged outside the flexible ring (4), three support rods (5) are slidably connected inside the support ring (3), one end of each support rod (5) is connected and fixed to the flexible ring (4), and the other end thereof is slidably connected to a telescopic rod (7), and a roller (8) is arranged at the end of the telescopic rod (7).

2. The anti-eccentricity device for the thermal insulation pipe sleeve according to claim 1, characterized in that: Slide grooves (6) are provided on both sides of the support rod (5), and the slide grooves (6) are slidably connected to the bosses (12) of the support ring (3).

3. The device for preventing eccentricity of a thermal insulation pipe sleeve according to claim 2, characterized in that: A baffle (9) is provided at the upper part of the end of the support rod (5), a tension spring (10) is connected and fixed to the baffle (9), and the other end of the tension spring (10) is connected and fixed to the outer side of the support ring (3).

4. The device for preventing eccentricity of a thermal insulation pipe sleeve according to claim 3, characterized in that: Top screws (11) for fastening the telescopic rod (7) are arranged on the left and right sides of the support rod (5).

5. The device for preventing eccentricity of a thermal insulation pipe sleeve according to claim 1, characterized in that: The flexible ring (4) is made of rubber material.

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