Backwater prevention automobile exhaust pipe

Abstract

The utility model relates to the technical field of automobile exhaust pipes, in particular to an anti-backwater automobile exhaust pipe which comprises an inner pipe, an outer pipe for protecting the inner pipe for automobile exhaust is sleeved outside the inner pipe, and a drainage assembly for draining water in the inner pipe is arranged in the inner pipe. The drainage assembly comprises supporting rods, springs, limiting grooves, fixing plates, rubber blocks, supporting blocks and fixing holes, the fixing holes for draining water are formed in the bottom of the inner pipe, the supporting rods are symmetrically inserted into the bottom of the inner pipe, the supporting rods are sleeved with the springs for resetting the supporting rods, and the fixing plates are welded to one sides of the supporting rods. A support block for blocking the fixing hole is welded outside the fixing plate; according to the automobile exhaust pipe, the fixing hole, the outer pipe, the inner pipe, the supporting rod, the spring, the supporting block and the fixing plate are arranged, so that the problem that when an existing automobile exhaust pipe is used, water return is likely to happen to the automobile exhaust pipe, and an exhaust system of an automobile is affected is solved.

Description

Technical Field

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

[0002] The car exhaust pipe is part of the engine exhaust system. The air intake of the car exhaust pipe receives the gas discharged from the engine, and then the gas is discharged from the exhaust outlet. Its main function is to expel the exhaust gas produced by engine combustion outside the vehicle and maintain the normal operation of the engine.

[0003] However, when using existing car exhaust pipes, water from the outside cannot be discharged after entering the exhaust pipe during the car's operation. Water in the exhaust pipe is prone to backflow, which affects the normal operation of the car's exhaust system and can also cause some damage to the engine. Therefore, a car exhaust pipe that prevents backflow needs to be installed. Utility Model Content

[0004] The main purpose of this utility model is to provide a water-proof automotive exhaust pipe. This utility model solves the problem that existing automotive exhaust pipes are prone to water backflow during use, which affects the vehicle's exhaust system, by setting a fixing hole, an outer pipe, an inner pipe, a support rod, a spring, a support block, and a fixing plate.

[0005] The technical solution adopted by this utility model to solve its technical problem is a water-proof automobile exhaust pipe, including an inner pipe, an outer pipe that protects the inner pipe from automobile exhaust, and a drainage component inside the inner pipe to drain water from the inner pipe. The drainage component includes a support rod, a spring, a limiting groove, a fixing plate, a rubber block, a support block, and a fixing hole. The bottom of the inner pipe has a fixing hole for draining water. Support rods are symmetrically inserted into the bottom of the inner pipe, and springs that reset the support rods are sleeved on the outside of the support rods. A fixing plate is welded to one side of the support rod, and a support block that seals the fixing hole is welded to the outside of the fixing plate.

[0006] By adopting the above technical solution, when water enters the inner pipe, there are three downward bends in the middle section of the inner pipe, and the bottom of the bends is provided with fixing holes opened on the inner pipe so that the water entering the inner pipe can enter the fixing holes. After the support block in the fixing holes is squeezed by the water, the support block moves downward. Then the fixing plate below the support block drives the support rod to move. At the same time, the spring outside the support rod is compressed to generate elastic force. Then the support block moves out of the fixing hole, and the water in the inner pipe is discharged from the inner pipe, thereby preventing the water in the inner pipe from flowing back.

[0007] After the water in the inner tube is drained, the spring outside the support rod causes the support rod to pop out, which in turn causes the support rod to reset the fixing plate. Then, the support block on one side of the fixing plate enters the fixing hole opened on the inner tube, which seals the fixing hole and prevents water from the outer tube from entering the inner tube.

[0008] Specifically, the bottom of the outer tube has several through holes for water to drain.

[0009] By adopting the above technical solution, when the water in the inner pipe flows into the outer pipe, multiple through holes are opened at the bottom of the outer pipe, which facilitates the drainage of the water in the outer pipe.

[0010] Specifically, the outer tube is fitted with a protective sleeve to protect it.

[0011] By adopting the above technical solution, a protective sleeve is attached to the outer screw of the outer pipe, and the protective sleeve is made of sound insulation cotton. When the exhaust gas wrapped around the car passes through the inner pipe, the noise wave generated is transmitted to the protective sleeve on the outer pipe. The protective sleeve made of sound insulation cotton absorbs and weakens the noise wave, thereby reducing the noise generated by the car exhaust.

[0012] Specifically, a rubber block is fitted onto the outside of the support block and is tightly connected to the inside of the fixing hole.

[0013] By adopting the above technical solution, when the support block enters the fixing hole, the rubber block outside the support block is tightly connected to the fixing hole, thereby preventing water from the outer pipe from entering the inner pipe.

[0014] Specifically, the inner tube has symmetrically provided limiting grooves on its inner side to allow the support rod to slide.

[0015] By adopting the above technical solution, when the support rod moves inside the inner tube, both ends of the support rod slide within the symmetrically opened limiting grooves inside the inner tube, thereby improving the stability of the support rod's movement.

[0016] The beneficial effects of this utility model are:

[0017] (1) The present invention provides a water-proof automobile exhaust pipe. When water enters the inner pipe, the middle section of the inner pipe is provided with three downward bends, and the bottom of the bends is provided with a fixing hole opened on the inner pipe so that the water entering the inner pipe enters the inner pipe. After the support block in the fixing hole is squeezed by the water, the support block moves downward. Then the fixing plate below the support block drives the support rod to move. At the same time, the spring outside the support rod is compressed to generate elastic force. Then the support block moves out of the fixing hole, and the water in the inner pipe is discharged from the inner pipe, thereby preventing the water in the inner pipe from flowing back.

[0018] (2) The water-proof automobile exhaust pipe of this utility model, when the water in the inner pipe is discharged, the spring outside the support rod drives the support rod to pop out, so that the support rod drives the fixing plate to reset, and then the support block on one side of the fixing plate enters the fixing hole opened on the inner pipe, so that the fixing hole is blocked to prevent the water in the outer pipe from entering the inner pipe.

[0019] (3) The anti-backflow automobile exhaust pipe of this utility model has an inner pipe with an outer pipe attached to it, which reduces the impact of foreign objects on the inner pipe, enhances the strength of the exhaust pipe, and protects the inner pipe. At the same time, a protective sleeve is attached to the outer pipe with screws, and the protective sleeve is made of sound insulation cotton. When the exhaust gas wrapped around the car passes through the inner pipe, the noise wave generated is transmitted to the protective sleeve on the outer pipe. The protective sleeve made of sound insulation cotton absorbs and weakens the noise wave, thereby reducing the noise generated by the car exhaust. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of a water-proof automotive exhaust pipe according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal drainage component structure of an anti-backflow automobile exhaust pipe according to the present invention.

[0023] Figure 3 This is a schematic diagram of the bottom structure of the outer pipe of a car exhaust pipe that is designed to prevent backflow.

[0024] In the diagram: 1. Outer tube; 2. Inner tube; 3. Support rod; 4. Limiting groove; 5. Spring; 6. Fixing hole; 7. Rubber block; 8. Support block; 9. Fixing plate; 10. Drainage assembly; 11. Through hole; 12. Protective sleeve. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] To prevent backflow of water in the inner pipe 2, as one embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the present invention discloses a water-proof automobile exhaust pipe, comprising an inner pipe 2, an outer pipe 1 that protects the inner pipe 2 from automobile exhaust, and a drainage assembly 10 for draining water from the inner pipe 2. The drainage assembly 10 includes a support rod 3, a spring 5, a limiting groove 4, a fixing plate 9, a rubber block 7, a support block 8, and a fixing hole 6. The bottom of the inner pipe 2 has a fixing hole 6 for draining water. The support rod 3 is symmetrically inserted into the bottom of the inner pipe 2, and a spring 5 is sleeved on the outside of the support rod 3 to reset the support rod 3. A fixing plate 9 is welded to one side of the support rod 3, and a support block 8 is welded to the outside of the fixing plate 9 to block the fixing hole 6.

[0027] When water enters the inner pipe 2, there are three downward bends in the middle section of the inner pipe 2, and the bottom of the bends is provided with fixing holes 6 opened on the inner pipe 2 so that the water entering the inner pipe 2 can enter the fixing holes 6. After the support block 8 in the fixing holes 6 is squeezed by the water, the support block 8 moves downward. Then the fixing plate 9 below the support block 8 drives the support rod 3 to move. At the same time, the spring 5 outside the support rod 3 is compressed to generate elastic force. Then the support block 8 moves out of the fixing holes 6, and the water in the inner pipe 2 is discharged from the inner pipe 2, thereby preventing the water in the inner pipe 2 from flowing back.

[0028] After the water in the inner tube 2 is drained, the spring 5 outside the support rod 3 causes the support rod 3 to pop out, which causes the support rod 3 to drive the fixing plate 9 to reset. Then, the support block 8 on one side of the fixing plate 9 enters the fixing hole 6 opened on the inner tube 2, so that the fixing hole 6 is blocked to prevent water in the outer tube 1 from entering the inner tube 2.

[0029] To drain the water from the outer pipe 1, for example, such as Figure 3 As shown, the present invention also includes a through hole 11 at the bottom of the outer tube 1 for water to drain, and the number of through holes 11 is several.

[0030] When in use, when water in the inner tube 2 flows into the outer tube 1, the bottom of the outer tube 1 has multiple through holes 11, which facilitates the drainage of water from the outer tube 1.

[0031] To reduce noise from car exhaust, for example, such as Figure 1 As shown, the present invention also includes a protective sleeve 12 that protects the outer tube 1.

[0032] When in use, the outer pipe 1 is fitted with a protective sleeve 12 by an external screw, and the protective sleeve 12 is made of sound insulation cotton. When the exhaust gas wrapped around the car passes through the inner pipe 2, the noise wave generated is transmitted to the protective sleeve 12 on the outer pipe 1. The protective sleeve 12, made of sound insulation cotton, absorbs and weakens the noise wave, thereby reducing the noise generated by the car exhaust.

[0033] To prevent water from entering the inner pipe 2 from the outer pipe 1, for example, such as... Figure 2 As shown, the present invention also includes a rubber block 7 that is tightly connected to the fixing hole 6 and sleeved on the outside of the support block 8.

[0034] When in use, when the support block 8 enters the fixing hole 6, the rubber block 7 outside the support block 8 is tightly connected to the fixing hole 6, thereby preventing water in the outer pipe 1 from entering the inner pipe 2.

[0035] To improve the stability of the movement of support rod 3, for example, such as Figure 2 As shown, the present invention also includes, on the inner side of the inner tube 2, symmetrically provided with limiting grooves 4 for sliding the support rod 3.

[0036] When in use, as the support rod 3 moves inside the inner tube 2, both ends of the support rod 3 slide within the symmetrically opened limiting grooves 4 inside the inner tube 2, thereby improving the stability of the movement of the support rod 3.

[0037] When this utility model is in use, when water enters the inner tube 2, the middle section of the inner tube 2 is provided with three downward bends, and the bottom of the bends is provided with fixing holes 6 opened on the inner tube 2 so that the water entering the inner tube 2 can enter the fixing hole 6. After the support block 8 in the fixing hole 6 is squeezed by the water, the support block 8 moves downward. Then the fixing plate 9 below the support block 8 drives the support rod 3 to move. At the same time, the spring 5 outside the support rod 3 is compressed to generate elastic force. Then the support block 8 moves out of the fixing hole 6, and the water in the inner tube 2 is discharged from the inner tube 2, thereby preventing the water in the inner tube 2 from flowing back.

[0038] When the water in the inner tube 2 is drained, the spring 5 outside the support rod 3 causes the support rod 3 to pop out, which causes the support rod 3 to drive the fixing plate 9 to reset. Then the support block 8 on one side of the fixing plate 9 enters the fixing hole 6 opened on the inner tube 2, which blocks the fixing hole 6 and prevents the water in the outer tube 1 from entering the inner tube 2.

[0039] When the water in the inner pipe 2 flows into the outer pipe 1, the bottom of the outer pipe 1 is provided with multiple through holes 11, so as to facilitate the drainage of the water in the outer pipe 1.

[0040] The outer pipe 1 is fitted with a protective sleeve 12 by an external screw, and the protective sleeve 12 is made of sound insulation cotton. When the exhaust gas wrapped around the car passes through the inner pipe 2, the noise wave generated is transmitted to the protective sleeve 12 on the outer pipe 1. The protective sleeve 12, made of sound insulation cotton, absorbs and weakens the noise wave, thereby reducing the noise generated by the car exhaust.

[0041] When the support block 8 enters the fixing hole 6, the rubber block 7 outside the support block 8 is tightly connected to the fixing hole 6, thereby preventing water in the outer pipe 1 from entering the inner pipe 2;

[0042] When the support rod 3 moves inside the inner tube 2, both ends of the support rod 3 slide within the symmetrically opened limiting grooves 4 inside the inner tube 2, thereby improving the stability of the movement of the support rod 3.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water-proof automotive exhaust pipe, characterized in that, The device includes an inner tube (2), and an outer tube (1) is sleeved on the outside of the inner tube (2) to protect the exhaust of the vehicle. A drainage assembly (10) is provided inside the inner tube (2) to drain the water inside the inner tube (2). The drainage assembly (10) includes a support rod (3), a spring (5), a limiting groove (4), a fixing plate (9), a rubber block (7), a support block (8), and a fixing hole (6). A fixing hole (6) for draining water is opened at the bottom of the inner tube (2). Support rods (3) are symmetrically inserted into the bottom of the inner tube (2), and a spring (5) for resetting the support rod (3) is sleeved on the outside of the support rod (3). A fixing plate (9) is welded to one side of the support rod (3), and a support block (8) for sealing the fixing hole (6) is welded to the outside of the fixing plate (9).

2. The anti-backflow automotive exhaust pipe according to claim 1, characterized in that, The bottom of the outer tube (1) is provided with a through hole (11) for water to drain, and there are several through holes (11).

3. The anti-backflow automotive exhaust pipe according to claim 1, characterized in that, The outer tube (1) is fitted with a protective sleeve (12) to protect the outer tube (1).

4. A water-proof automotive exhaust pipe according to claim 1, characterized in that, The support block (8) is fitted with a rubber block (7) that is tightly connected to the fixing hole (6).

5. A water-proof automotive exhaust pipe according to claim 1, characterized in that, The inner tube (2) has symmetrically provided limiting grooves (4) on its inner side to allow the support rod (3) to slide.

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