An assembled exhaust pipe

Abstract

The utility model discloses an assembled exhaust pipe, including the sleeve pipe, both ends of sleeve pipe all insert and connect the fixed positioning pipe, the inside pipe orifice of one end positioning pipe is welded with the guide pipe, and the other pipe orifice of guide pipe is located in the inside of positioning pipe of other side, and the positioning ring is formed on the positioning pipe, and the positioning ring is located in the outside of sleeve pipe, and the insert depth of positioning pipe is positioned, and the inside pipe orifice of positioning pipe is the taper mouth, and the taper mouth is bent and is formed to the inside of the pipe orifice of positioning pipe, and one end of guide pipe is the connecting port, and the connecting port is formed by the flaring of guide pipe, and the utility model solves the low production efficiency, the high production cost problem of current exhaust pipe, through the welding of guide pipe on positioning pipe, utilizes the insert of positioning pipe and sleeve pipe and fixes guide pipe in sleeve pipe, and inserts guide pipe in the positioning pipe of other side simultaneously, and exhaust pipe assembly is formed, and the production procedure is reduced, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of exhaust pipe technology, specifically an assembled exhaust pipe. Background Technology

[0002] A car exhaust pipe heat shield is a heat insulation device installed around the engine exhaust pipe. The purpose of the installation is to prevent the high temperature generated by the exhaust pipe itself from radiating to nearby parts and causing potential hazards. Currently, the heat shields for the tail of the car engine exhaust pipe are generally fixed and positioned by fastening metal belts or clamps to the surface of the heat insulation material. However, this installation method is not very stable and is prone to sliding and displacement.

[0003] Furthermore, existing exhaust pipes are formed by welding multiple sections of pipe together, resulting in low production efficiency and high labor costs. Therefore, in order to reduce production costs, improve production efficiency, and ensure the heat insulation effect of the exhaust pipe, this assembled exhaust pipe was designed. Utility Model Content

[0004] The purpose of this utility model is to provide an assembled exhaust pipe. By welding the guide pipe onto a positioning pipe, the guide pipe is fixed inside the outer sleeve by inserting the positioning pipe into the outer sleeve. At the same time, the guide pipe is inserted into the positioning pipe on the other side, and the exhaust pipe is assembled. This reduces the production process and lowers the production cost.

[0005] This utility model provides the following technical solution: an assembled exhaust pipe, including an outer sleeve, both ends of which are fixed with positioning tubes, and a guide tube is welded to the inner opening of the positioning tube at one end, and the other opening of the guide tube is located inside the positioning tube on the other side.

[0006] To prevent the positioning tube from penetrating and affecting the insertion of the positioning tube on the other side, a positioning ring is formed on the positioning tube. The positioning ring is located on the outside of the outer tube and positions the insertion depth of the positioning tube.

[0007] To separate the guide tube from the positioning tube on the other side, the inner opening of the positioning tube is a tapered opening, which is formed by bending the opening of the positioning tube inward. One end of the guide tube is a connecting port, which is formed by flaring the guide tube. The tapered opening and the connecting port are welded together.

[0008] To improve the heat insulation of the exhaust pipe, the outer sleeve has insertion ports formed on both sides and a heat insulation part formed in the middle of the outer sleeve.

[0009] In order to fit other heat insulation components, the heat insulation part is provided with a groove, which is used to fit the heat insulation components.

[0010] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0011] (1) By welding the guide tube onto a positioning tube, the guide tube is fixed inside the outer tube by the insertion of the positioning tube and the outer tube, and the guide tube is inserted into the positioning tube on the other side to assemble the exhaust pipe, thus reducing the production process and lowering the production cost.

[0012] (2) By separating the guide tube and the positioning tube, and by setting the outer sleeve, the exhaust pipe is insulated, the temperature of the exhaust pipe surface is reduced, and the insulation performance is improved. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a three-dimensional view of the entire utility model;

[0015] Figure 2 This is a cross-sectional view of the entire utility model;

[0016] In the diagram: 1. Outer tube; 11. Insert tube port; 12. Insulation part; 13. Groove; 2. Positioning tube; 21. Positioning ring; 22. Conical opening; 3. Guide tube; 31. Connection port. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 and 2This utility model provides a technical solution: an assembled exhaust pipe, including an outer sleeve 1, with positioning tubes 2 inserted and fixed at both ends of the outer sleeve 1. A guide tube 3 is welded to the inner end of one end of the positioning tube 2. The guide tube 3 is connected to the inner end of one side of the positioning tube 2, and the other end of the guide tube 3 is located inside the positioning tube 2 on the other side. In this assembled exhaust pipe, the guide tube 3 is first welded to the end of one side of the positioning tube 2, and then the guide tube 3 and the positioning tube 2 are inserted and fixed together to one end of the outer sleeve 1. Another positioning tube 2 is also inserted into the other end of the outer sleeve 1, and the other end of the guide tube 3 is located inside the other positioning tube 2, guiding the gas out from the other positioning tube 2. This assembled exhaust pipe significantly shortens the assembly time. Compared with the existing fully welded exhaust pipe, it reduces the number of processes and lowers the production cost. At the same time, the outer sleeve 1 can insulate the exhaust pipe and reduce the surface temperature of the exhaust pipe.

[0019] A positioning ring 21 is formed on the positioning tube 2. The positioning ring 21 is located on the outside of the outer tube 1 and positions the insertion depth of the positioning tube 2. The positioning ring 21 further positions the insertion depth of the positioning tube 2 inside the outer tube 1, and the positioning tube 2 and the outer tube 1 are interference fit.

[0020] The inner opening of the positioning tube 2 is a conical opening 22, which is formed by bending the opening of the positioning tube 2 inward. The conical opening 22 guides the sleeve of the outer tube 1. One end of the guide tube 3 is a connecting port 31, which is formed by flaring the guide tube 3 so that the diameter of the guide tube 3 is smaller than that of the positioning tube 2. This further avoids the guide tube 3 from contacting the positioning tube 2 on the other side and reduces heat transfer. The conical opening 22 and the connecting port 31 are welded together to connect the guide tube 3 and the positioning tube 2 on one side.

[0021] The outer tube 1 has insertion ports 11 formed on both sides, and a heat insulation part 12 formed in the middle of the outer tube 1. The heat insulation part 12 increases the thickness of the middle of the outer tube 1 and improves the heat insulation capacity.

[0022] The heat insulation part 12 has a groove 13, which is used to fit the heat insulation component, further improving the heat insulation capacity and preventing burns.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An assembled exhaust pipe, comprising an outer casing, characterized in that: Both ends of the outer sleeve are fixed with positioning tubes. A guide tube is welded to the inner opening of the positioning tube at one end. The other opening of the guide tube is located inside the positioning tube on the other side. A positioning ring is formed on the positioning tube and is located outside the outer sleeve to position the insertion depth of the positioning tube. The inner opening of the positioning tube is a tapered opening, which is formed by bending the opening of the positioning tube inward. One end of the guide tube is a connecting port, which is formed by flaring the guide tube. The tapered opening and the connecting port are welded together.

2. The assembled exhaust pipe according to claim 1, characterized in that: The outer tube has insertion ports formed on both sides, and a heat insulation part is formed in the middle of the outer tube.

3. The assembled exhaust pipe according to claim 2, characterized in that: The heat insulation part has a groove for fitting heat insulation components.

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