Fireproof and heat-insulating PVC (polyvinyl chloride) pipe

Abstract

The utility model discloses a fireproof heat preservation type PVC pipe which comprises a fireproof layer, the inner surface of the fireproof layer is fixedly connected with a heat preservation layer, the inner surface of the heat preservation layer is fixedly connected with a pipe body, the inner surface of the fireproof layer is provided with a sliding groove, the inner surface of the sliding groove is connected with a sliding strip in a sliding mode, and the sliding strip is fixedly connected with the pipe body. The lower surface of the sliding strip is fixedly connected with a sleeve, and the outer surface of the sleeve is fixedly connected with a front half fixing plate. Through the arrangement of the fireproof layer and the heat preservation layer, the fireproof and heat preservation functions of the PVC pipe are achieved, so that the pipe is prevented from being rapidly melted when a fire disaster happens, heat energy loss can be reduced, it is ensured that a pipeline system operates at the specific temperature, and meanwhile under the action of the sliding strip and the sleeve, the sleeve can be moved to a damaged area when any position of the pipe is damaged; and the position is fixed through the bolt and the nut, so that continuous leakage of liquid in the pipeline is temporarily avoided, and the production loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC pipes, in particular to a fireproof and heat-insulating PVC pipe. Background Art

[0002] PVC pipe, full name polyvinyl chloride pipe, is a common plastic pipe material. It is mainly made of polyvinyl chloride resin, stabilizer and other materials through high temperature pressing. PVC pipe has the advantages of chemical resistance, corrosion resistance, insulation, lightness, durability and economical affordability, so it is widely used in drainage, liquid transportation, gas transportation and vacuum system.

[0003] However, existing PVC pipes still have some disadvantages. For example, due to the low melting point of PVC pipes, they may melt quickly in the event of a fire and fail to play a role in fire prevention. Secondly, the thermal conductivity of PVC pipes is relatively high, which means that they cannot effectively block heat transfer and therefore perform poorly in terms of heat preservation. In addition, when a PVC pipe is damaged somewhere, it cannot effectively prevent liquid from leaking out, which will cause a lot of production losses. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a fireproof and heat-insulating PVC pipe. By setting a fireproof layer and a heat-insulating layer, the fireproof and heat-insulating functions of the PVC pipe are realized, thereby avoiding the rapid melting of the pipe in the event of a fire, and reducing heat energy loss to ensure that the pipeline system operates at a specific temperature. At the same time, under the action of the slide bar and the sleeve, when any position of the pipe is damaged, the sleeve can be moved to the damaged area, and the position can be fixed by bolts and nuts, thereby temporarily avoiding the continuous leakage of the liquid in the pipeline, thereby reducing production losses.

[0005] The utility model also provides the above-mentioned fireproof and heat-insulating PVC pipe, comprising:

[0006] The fireproof layer has a heat-insulating layer fixedly connected to its inner surface, and the heat-insulating layer has a pipe fixedly connected to its inner surface.

[0007] The inner surface of the fireproof layer is provided with a slide groove, the inner surface of the slide groove is slidably connected with a slide bar, the lower surface of the slide bar is fixedly connected with a sleeve, the outer surface of the sleeve is fixedly connected with a front half fixed plate, the outer surface of the sleeve is fixedly connected with a rear half fixed plate, the inner surface of the rear half fixed plate is threadedly connected with a bolt, and the outer surface of the bolt is threadedly connected with a nut.

[0008] According to the fireproof and heat-insulating PVC pipe, the inner surface of the pipe body is provided with an inner lining layer, the material of the inner lining layer is polytetrachloroethylene, and is used to prevent the liquid in the pipe from adhering to the inner wall and affecting the flow of the liquid.

[0009] According to the fireproof and heat-insulating PVC pipe, a buffer semi-cylinder is fixedly connected to the outer surface of the insulation layer. The number of the buffer semi-cylinders is nine and they are distributed in a circular array, so as to buffer the impact force on the PVC pipe.

[0010] According to the fireproof and heat-insulating PVC pipe, a buffer groove is provided on the inner surface of the fireproof layer, and the buffer groove is matched with the buffer semi-cylinder.

[0011] According to the fireproof and heat-insulating PVC pipe, the material of the fireproof layer is aluminum hydroxide, which is used to improve the fireproof effect of the PVC pipe.

[0012] According to the fireproof and heat-insulating PVC pipe, the material of the heat-insulating layer is glass wool, which is used to improve the heat-insulating effect of the PVC pipe.

[0013] According to the fireproof and heat-insulating PVC pipe, the outer surface of the fireproof layer is slidably connected to the sleeve, and the rear surface of the front half fixed plate is in contact with the rear half fixed plate, which facilitates moving the sleeve to the damaged part of the pipe.

[0014] According to the fireproof and heat-insulating PVC pipe, the number of the bolts is three and they are linearly distributed, and the outer surface of the bolts is threadedly connected to the front half fixed plate to fix the position of the sleeve.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a fireproof and heat-insulating PVC pipe of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0019] Figure 3 This is a schematic diagram of the fireproof layer structure of a fireproof and heat-insulating PVC pipe of the utility model;

[0020] Figure 4 The utility model is a partial structural schematic diagram of a fireproof and heat-insulating PVC pipe.

[0021] Legend:

[0022] 1. Fireproof layer; 2. Insulation layer; 3. Pipe body; 4. Lining layer; 5. Buffer semi-cylinder; 6. Slide groove; 7. Slide bar; 8. Sleeve; 9. Front half fixed plate; 10. Rear half fixed plate; 11. Bolt; 12. Nut; 13. Buffer groove. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4 The utility model embodiment is a fireproof and heat-insulating PVC pipe, which includes: a fireproof layer 1, the inner surface of the fireproof layer 1 is fixedly connected with a heat-insulating layer 2, the inner surface of the heat-insulating layer 2 is fixedly connected with a pipe body 3, the inner surface of the pipe body 3 is provided with an inner lining layer 4, the material of the inner lining layer 4 is polytetrachloroethylene, the outer surface of the heat-insulating layer 2 is fixedly connected with a buffer semi-cylinder 5, the number of the buffer semi-cylinders 5 is nine and they are distributed in a ring array, the inner surface of the fireproof layer 1 is provided with a buffer groove 13, the buffer groove 13 is adapted to the buffer semi-cylinder 5, the material of the fireproof layer 1 is aluminum hydroxide, and the material of the heat-insulating layer 2 is glass wool.

[0025] The inner surface of the fireproof layer 1 is provided with a slide groove 6, the inner surface of the slide groove 6 is slidably connected with a slide bar 7, the lower surface of the slide bar 7 is fixedly connected with a sleeve 8, the outer surface of the sleeve 8 is fixedly connected with a front half fixed plate 9, the outer surface of the sleeve 8 is fixedly connected with a rear half fixed plate 10, the inner surface of the rear half fixed plate 10 is threadedly connected with a bolt 11, the outer surface of the bolt 11 is threadedly connected with a nut 12, the outer surface of the fireproof layer 1 is slidably connected with the sleeve 8, the rear surface of the front half fixed plate 9 is in contact with the rear half fixed plate 10, the number of the bolts 11 is three and they are linearly distributed, and the outer surface of the bolt 11 is threadedly connected with the front half fixed plate 9.

[0026] Working principle: When a fire occurs, the fireproof layer 1 can delay the spread of flames, thereby protecting the pipeline system in the event of a fire. The thermal insulation layer 2 can insulate the liquid in the pipeline, reduce the frequency of heat exchange inside and outside the pipeline, and reduce energy consumption. When the pipe is damaged or broken at any position, the sleeve 8 can be moved as a whole to the damaged part through the slide groove 6 set on the outside of the fireproof layer 1 for temporary shielding, and the position of the sleeve 8 can be fixed and the sealing can be ensured by tightening the nut 12, thereby effectively preventing the loss caused by leakage of liquid in the pipeline.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A fireproof and heat-insulating PVC pipe, characterized in that: include: A fireproof layer (1), the inner surface of the fireproof layer (1) being fixedly connected to a heat-insulating layer (2), and the inner surface of the heat-insulating layer (2) being fixedly connected to a pipe body (3); The inner surface of the fireproof layer (1) is provided with a slide groove (6), the inner surface of the slide groove (6) is slidably connected to a slide bar (7), the lower surface of the slide bar (7) is fixedly connected to a sleeve (8), the outer surface of the sleeve (8) is fixedly connected to a front half fixed plate (9), the outer surface of the sleeve (8) is fixedly connected to a rear half fixed plate (10), the inner surface of the rear half fixed plate (10) is threadedly connected to a bolt (11), and the outer surface of the bolt (11) is threadedly connected to a nut (12).

2. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The inner surface of the tube body (3) is provided with an inner lining layer (4), and the material of the inner lining layer (4) is polytetrachloroethylene.

3. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The outer surface of the thermal insulation layer (2) is fixedly connected with a buffer semi-cylinder (5), and the number of the buffer semi-cylinders (5) is nine and they are distributed in a ring array.

4. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The inner surface of the fireproof layer (1) is provided with a buffer groove (13), and the buffer groove (13) is adapted to the buffer semi-cylinder (5).

5. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The material of the fireproof layer (1) is aluminum hydroxide.

6. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The material of the thermal insulation layer (2) is glass wool.

7. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The outer surface of the fireproof layer (1) is slidably connected to the sleeve (8), and the rear surface of the front semi-fixed plate (9) is in contact with the rear semi-fixed plate (10).

8. The fireproof and heat-insulating PVC pipe according to claim 1, characterized in that: The number of the bolts (11) is three and they are linearly distributed, and the outer surfaces of the bolts (11) are threadedly connected to the front half fixed plate (9).

Images