Connecting pipeline structure of automobile exhaust system

Abstract

The utility model relates to the technical field of automobile exhaust systems, in particular to an automobile exhaust system connecting pipeline structure which comprises a connecting pipe, the air inlet end of the connecting pipe is connected with an automobile engine, and a filtering assembly is arranged at the air outlet end of the connecting pipe and comprises a filtering cylinder. A plurality of layers of filter plates used for purifying tail gas are arranged in the filter cartridge, the gas outlet end of the filter cartridge is communicated with a cooling box, the gas outlet end of the cooling box is communicated with an exhaust pipe, and the exhaust pipe is further provided with a pipeline cooling assembly used for cooling a pipeline. According to the device, the filtering assembly and the cooling box are arranged, tail gas can be purified through the filtering assembly in the using process, harm of the tail gas is reduced, meanwhile, the purified tail gas enters the cooling box, the tail gas can be cooled through a circulating pipe and a refrigerating piece in the cooling box, and the situation that the temperature of the tail gas is too high, and an exhaust pipe is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile exhaust systems, in particular to a connecting pipeline structure of an automobile exhaust system. Background Art

[0002] The connecting pipes of the automobile exhaust system mainly include exhaust pipes, catalytic converters, mufflers and other components, which work together to complete the emission of exhaust gas and reduce noise. The exhaust pipe is mainly responsible for discharging the exhaust gas generated by engine combustion outside the vehicle;

[0003] However, when the car is driving, the exhaust gas has a certain temperature. Since the exhaust pipe is usually made of stainless steel, the heat will be transferred to the exhaust pipe when the exhaust gas is discharged through the exhaust pipe, which can easily cause damage to the exhaust pipe. In serious cases, it may affect the normal driving of the vehicle.

[0004] For example, the automobile exhaust system connecting pipe structure and automobile provided by publication number "CN205330783U" greatly improve the operability of workers' installation by adopting a front and rear two-stage structure, so that the pipe has a certain adjustment space for easy installation, and the clamp fastening form also makes the installation operation simpler for workers in the actual assembly workshop.

[0005] However, the above device still has the following problems during implementation:

[0006] When a car is driving, the temperature of the exhaust gas is high. Long-term exhaust will increase the temperature of the exhaust pipe, which can easily damage the exhaust pipe and affect the driving of the car. In addition, the exhaust pipe outlet end is exposed, which can easily cause burns and pose a certain safety hazard. Utility Model Content

[0007] The utility model aims to provide a connecting pipe structure of an automobile exhaust system to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A connecting pipe structure for an automobile exhaust system comprises a connecting pipe, wherein an air inlet end of the connecting pipe is connected to an automobile engine, a filter assembly is arranged on an air outlet end of the connecting pipe, the filter assembly comprises a filter cartridge, a plurality of filter plates for purifying exhaust gas are arranged inside the filter cartridge, the air outlet end of the filter cartridge is connected to a cooling box, the air outlet end of the cooling box is connected to an exhaust pipe, and a pipe cooling assembly for cooling the pipe is also arranged on the exhaust pipe.

[0010] Preferably: a cooling cavity is provided inside the cooling box, a partition plate is fixedly installed in the cooling cavity, the top of the partition plate is fixed to the top of the inner wall of the cooling box, a refrigeration box is fixedly installed between the partition plate and the inner wall of the cooling cavity, cooling water is provided in the refrigeration box, a refrigeration pipe for cooling the cooling water is provided inside the refrigeration box, a water pump is fixedly installed on the top of the refrigeration box, the water outlet end of the water pump is connected to a circulation pipe, the circulation pipe passes through the partition plate and extends to the other side of the partition plate, and the circulation pipe is fixed on the inner wall of the cooling cavity.

[0011] Preferably: a plurality of refrigeration fins are fixedly installed at the bottom of the cooling chamber, and the plurality of refrigeration fins are staggered, the tops of the plurality of refrigeration fins are in contact with the top of the inner wall of the cooling box, both ends of the cooling box are provided with air outlet pipes, and a second flange is fixedly installed on one end of the air outlet pipe away from the filter cartridge;

[0012] A fixing plate is arranged at one end of the exhaust pipe close to the cooling box. The cooling box is fixed to the fixing plate on the exhaust pipe through a second flange. A sealing gasket is arranged at the joint between the exhaust pipe and the second flange.

[0013] Preferably: the pipeline cooling assembly includes two first water supply pipes, the two first water supply pipes are fixedly installed on both sides of the air outlet pipe, the two first water supply pipes are connected to the cooling chamber, one of the first water supply pipes is connected to the inside of the refrigeration box, and the other first water supply pipe is connected to the circulation pipe, and a micro water pump is provided at one end of the two first water supply pipes close to the cooling box;

[0014] The pipeline cooling assembly also includes a cooling ring, which is sleeved on the exhaust pipe. A connecting pipe is provided inside the cooling ring. The ends of the two first water supply pipes away from the pipeline cooling assembly extend into the cooling ring and are respectively fixed to the two ends of the connecting pipe.

[0015] Preferably: a connection groove is provided at one end of the two first water supply pipes away from the cooling box, a plurality of slide bars are slidably connected to the inner wall of each first water supply pipe, a return spring is fixedly connected to one end of each slide bar away from the inside of the first water supply pipe, and the other end of each return spring is fixedly installed in the inner wall of the adjacent first water supply pipe;

[0016] Each of the first water supply pipes is provided with a sealing plate, the side of the sealing plate close to the connecting groove abuts against the bottom of the first water supply pipe, and the bottom of the sealing plate is fixed to the adjacent sliding rod, and the diameter of the sealing plate is smaller than the diameter of the first water supply pipe.

[0017] Preferably: the end of the first water supply pipe away from the cooling box is slidably connected to the second water supply pipe, the side of the second water supply pipe close to the first water supply pipe is fixedly connected to a plug-in pipe, and the plug-in pipe is slidably plugged into the connection groove, a plurality of water inlet grooves are also provided on the surface of the plug-in pipe close to the top, the end of the plug-in pipe close to the first water supply pipe is in contact with the sealing plate, and the second water supply pipe is connected to the first water supply pipe through the plug-in pipe;

[0018] A sealing gasket is provided at the joint between the second water supply pipe and the first water supply pipe, threads are provided on the outer surfaces of the first water supply pipe and the second water supply pipe, a fixing ring is threadedly connected to the second water supply pipe, and the second water supply pipe is fixed to the first water supply pipe through the fixing ring.

[0019] Preferably: an air inlet pipe is installed on one side of the filter cartridge close to the connecting pipe, a first flange is fixedly installed on one side of the air inlet pipe close to the connecting pipe, fixing bolts are arranged on the first flange, the filter cartridge is fixed to the connecting pipe through the first flange, and a sealing ring is arranged at the joint between the first flange and the connecting pipe;

[0020] A connector is fixedly mounted on the air outlet end of the filter cartridge, and the other end of the connector is fixed in the air outlet pipe on the cooling box.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model is provided with a filter assembly and a cooling box. When in use, the filter assembly can purify the exhaust gas to reduce the harm of the exhaust gas. At the same time, the purified exhaust gas enters the cooling box, and the exhaust gas can be cooled by the circulation pipe and the refrigeration plate in the cooling box to avoid damage to the exhaust pipe caused by excessively high exhaust temperature.

[0023] 2. The utility model uses a pipe cooling assembly arranged on the exhaust pipe. When in use, the water in the circulation pipe can be transported to the cooling ring through the first water supply pipe and the connecting groove to cool the exhaust pipe. At the same time, the used water is transported to the refrigeration box again through the second water supply pipe on the other side for cooling and recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the first perspective of the present utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the filter cartridge in the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the cooling box in the utility model;

[0027] Figure 4This is a schematic diagram of the first water supply pipe and the second water supply pipe in the present invention being connected.

[0028] In the figure: 1. connecting pipe; 11. exhaust pipe; 2. filter assembly; 21. filter cartridge; 22. air inlet pipe; 23. connector; 24. first flange; 25. sealing ring; 26. filter plate; 3. cooling box; 31. cooling chamber; 32. partition plate; 33. refrigeration box; 34. water pump; 35. circulation pipe; 36. refrigeration plate; 37. second flange; 38. outlet pipe; 4. pipeline cooling assembly; 41. first water supply pipe; 42. connecting groove; 43. sliding rod; 44. sealing plate; 45. second water supply pipe; 46. plug-in pipe; 47. water inlet groove; 48. fixing ring; 49. cooling ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] For example, see Figure 1-4A connecting pipe structure of an automobile exhaust system includes a connecting pipe 1, characterized in that: the air inlet end of the connecting pipe 1 is connected to the automobile engine, a filter assembly 2 is arranged on the air outlet end of the connecting pipe 1, the filter assembly 2 includes a filter cartridge 21, a plurality of filter plates 26 for purifying exhaust gas are arranged inside the filter cartridge 21, a cooling box 3 is connected to the air outlet end of the cooling box 3, an exhaust pipe 11 is connected to the exhaust pipe 11, a pipe cooling assembly 4 for cooling the pipe is arranged on the exhaust pipe 11, and the inner opening of the cooling box 3 is connected to the exhaust pipe 11. A cooling chamber 31 is provided, in which a partition plate 32 is fixedly installed, the top of the partition plate 32 is fixed to the top of the inner wall of the cooling box 3, a refrigeration box 33 is fixedly installed between the partition plate 32 and the inner wall of the cooling chamber 31, cooling water is provided in the refrigeration box 33, a refrigeration pipe for cooling the cooling water is provided inside the refrigeration box 33, a water pump 34 is fixedly installed on the top of the refrigeration box 33, the water outlet end of the water pump 34 is connected to a circulation pipe 35, the circulation pipe 35 passes through the partition plate 32 and extends to the other side of the partition plate 32, and the circulation pipe 35 is fixed on the inner wall of the cooling chamber 31, a plurality of cooling fins 36 are fixedly installed at the bottom of the cooling chamber 31, and the plurality of cooling fins 36 are staggered, and the tops of the plurality of cooling fins 36 are all in contact with the top of the inner wall of the cooling box 3, and both ends of the cooling box 3 are provided with an outlet pipe 38, and a second flange 37 is fixedly installed on the end of the outlet pipe 38 away from the filter cartridge 21, and a fixing plate is provided at the end of the exhaust pipe 11 close to the cooling box 3, and the cooling box 3 is fixed to the fixing plate on the exhaust pipe 11 through the second flange 37, and the exhaust pipe 11 is fixed to the second flange 37. The joints of the flanges 37 are all provided with sealing gaskets, an air inlet pipe 22 is installed on the side of the filter cartridge 21 close to the connecting pipe 1, a first flange 24 is fixedly installed on the side of the air inlet pipe 22 close to the connecting pipe 1, a fixing bolt is provided on the first flange 24, the filter cartridge 21 is fixed to the connecting pipe 1 through the first flange 24, a sealing ring 25 is provided at the joint of the first flange 24 and the connecting pipe 1, a connector 23 is fixedly installed on the air outlet end of the filter cartridge 21, and the other end of the connector 23 is fixed in the air outlet pipe 38 on the cooling box 3;

[0031] When in use, after the exhaust gas enters the connecting pipe 1, it first enters the filter assembly 2 through the connecting pipe 1, and the harmful substances in the exhaust gas can be filtered through the multi-layer filter plate 26 arranged in the filter cartridge 21. The filtered gas enters the cooling box 3 through the connecting head 23, and the exhaust gas is cooled by the cooling box 3 to reduce the temperature of the exhaust gas;

[0032] When the exhaust gas enters the cooling box 3 through the connector 23, the gas is first cooled by the multiple cooling fins 36. At the same time, the multiple cooling fins 36 are staggered to extend the time for the gas to pass through the cooling box 3, so that the exhaust gas is cooled more thoroughly.

[0033] When the tail gas passes through the cooling plate 36, the water pump 34 on the refrigeration box 33 is started at the same time, so that the water pump 34 transports the cooling water in the refrigeration box 33 to the circulation pipe 35, and the cooling chamber 31 is cooled through the circulation pipe 35, thereby accelerating the cooling speed of the tail gas;

[0034] By setting the first flange 24 and the second flange 37, when in use, the filter assembly 2 and the cooling box 3 can be quickly removed from the connecting pipe 1 through the first flange 24 and the second flange 37, so as to facilitate cleaning or replacement of the filter assembly 2 and the cooling box 3.

[0035] For example 2, please refer to Figure 1-4 The pipeline cooling assembly 4 includes two first water supply pipes 41, which are fixedly installed on both sides of the exhaust pipe 38, and the two first water supply pipes 41 are connected to the cooling chamber 31, one of the first water supply pipes 41 is connected to the inside of the refrigeration box 33, and the other first water supply pipe 41 is connected to the circulation pipe 35. The two first water supply pipes 41 are both provided with a micro water pump at one end close to the cooling box 3. The pipeline cooling assembly 4 also includes a cooling ring 49, which is sleeved on the exhaust pipe 11. The cooling ring 4 9 is provided with a connecting pipe inside, and the ends of the two first water supply pipes 41 away from the pipeline cooling assembly 4 are extended into the cooling ring 49 and are respectively fixed to the two ends of the connecting pipe, and the ends of the two first water supply pipes 41 away from the cooling box 3 are provided with a connecting groove 42, and the inner wall of each first water supply pipe 41 is slidably connected with a plurality of slide rods 43, and the end of each slide rod 43 away from the inside of the first water supply pipe 41 is fixedly connected with a return spring, and the other end of each return spring is fixedly installed in the inner wall of the adjacent first water supply pipe 41. Each first water supply pipe 41 is provided with a sealing plate 44, and the side of the sealing plate 44 close to the connecting groove 42 is in contact with the bottom of the first water supply pipe 41, and the bottom of the sealing plate 44 is fixed to the adjacent sliding rod 43, and the diameter of the sealing plate 44 is smaller than the diameter of the first water supply pipe 41, and the end of the first water supply pipe 41 away from the cooling box 3 is slidably connected to the second water supply pipe 45, and the side of the second water supply pipe 45 close to the first water supply pipe 41 is fixedly connected to the plug-in pipe 46, and the plug-in pipe 46 is slidably plugged into the connecting groove 42, and the plug-in pipe 46 A plurality of water inlet grooves 47 are also provided on the surface near the top, one end of the plug-in pipe 46 near the first water supply pipe 41 is in contact with the sealing plate 44, the second water supply pipe 45 is connected to the first water supply pipe 41 through the plug-in pipe 46, a sealing gasket is provided at the joint between the second water supply pipe 45 and the first water supply pipe 41, threads are provided on the outer surfaces of the first water supply pipe 41 and the second water supply pipe 45, a fixing ring 48 is threadedly connected to the second water supply pipe 45, and the second water supply pipe 45 is fixed to the first water supply pipe 41 through the fixing ring 48;

[0036] When in use, the two micro water pumps in the first water supply pipes 41 are started at the same time, and the water in the circulation pipe 35 is pumped into the first water supply pipe 41 through the circulation pipe 35 by the micro water pump and transported to the connecting pipe in the cooling ring 49 through the connecting groove 42, so as to cool the exhaust pipe 11. At the same time, the cooled water is pumped back to the refrigeration box 33 through another water pump to cool it again and be recycled.

[0037] By arranging the slide bar 43 and the sealing plate 44 in the first water supply pipe 41, when the second water supply pipe 45 is connected to the first water supply pipe 41, the sealing plate 44 can be lifted up from the bottom of the first water supply pipe 41 by inserting the plug-in pipe 46 at the top of the second water supply pipe 45 into the connecting groove 42, and the first water supply pipe 41 and the second water supply pipe 45 are fixed by the fixing ring 48, and the first water supply pipe 41 and the second water supply pipe 45 can be connected through the water inlet groove 47 provided on the plug-in pipe 46;

[0038] When disassembling, after the second water supply pipe 45 is pulled out from the first water supply pipe 41, the sealing plate 44 and the sliding rod 43 rebound downward under the action of the return spring, so that the sealing plate 44 covers the bottom of the first water supply pipe 41, sealing the first water supply pipe 41 to prevent cooling water from leaking from the first water supply pipe 41.

[0039] Working principle: When in use, after the exhaust gas enters the connecting pipe 1, it first enters the filter assembly 2 through the connecting pipe 1, and the harmful substances in the exhaust gas can be filtered through the multi-layer filter plate 26 set in the filter cartridge 21. The filtered gas enters the cooling box 3 through the connecting head 23, and the exhaust gas is cooled by the cooling box 3 to reduce the temperature of the exhaust gas;

[0040] When the exhaust gas enters the cooling box 3 through the connector 23, the gas is first cooled by the multiple cooling fins 36. At the same time, the multiple cooling fins 36 are staggered to extend the time for the gas to pass through the cooling box 3, so that the exhaust gas is cooled more thoroughly.

[0041] When the tail gas passes through the cooling plate 36, the water pump 34 on the refrigeration box 33 is started at the same time, so that the water pump 34 transports the cooling water in the refrigeration box 33 to the circulation pipe 35, and the cooling chamber 31 is cooled through the circulation pipe 35, thereby accelerating the cooling speed of the tail gas;

[0042] When in use, the micro water pumps in the two first water supply pipes 41 are started at the same time, and the water in the circulation pipe 35 is pumped into the first water supply pipe 41 through the circulation pipe 35 and transported to the connecting pipe in the cooling ring 49 through the connecting groove 42 to cool the exhaust pipe 11. At the same time, the cooled water is pumped back to the refrigeration box 33 through another water pump to be cooled again and recycled.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting pipe structure for an automobile exhaust system, comprising a connecting pipe (1), characterized in that: The air inlet end of the connecting pipe (1) is connected to the automobile engine, and the air outlet end of the connecting pipe (1) is provided with a filter assembly (2), the filter assembly (2) comprising a filter cartridge (21), the interior of the filter cartridge (21) being provided with multiple layers of filter plates (26) for purifying exhaust gas, the air outlet end of the filter cartridge (21) being connected to a cooling box (3), the air outlet end of the cooling box (3) being connected to an exhaust pipe (11), and the exhaust pipe (11) is further provided with a pipe cooling assembly (4) for cooling the pipe.

2. The automobile exhaust system connecting pipe structure according to claim 1, characterized in that: A cooling chamber (31) is provided inside the cooling box (3), a partition plate (32) is fixedly installed in the cooling chamber (31), the top of the partition plate (32) is fixed to the top of the inner wall of the cooling box (3), a refrigeration box (33) is fixedly installed between the partition plate (32) and the inner wall of the cooling chamber (31), cooling water is provided in the refrigeration box (33), a refrigeration pipe for cooling the cooling water is provided inside the refrigeration box (33), a water pump (34) is fixedly installed on the top of the refrigeration box (33), a water outlet end of the water pump (34) is connected to a circulation pipe (35), the circulation pipe (35) passes through the partition plate (32) and extends to the other side of the partition plate (32), and the circulation pipe (35) is fixed to the inner wall of the cooling chamber (31).

3. The automobile exhaust system connecting pipe structure according to claim 2, characterized in that: A plurality of cooling fins (36) are fixedly mounted on the bottom of the cooling cavity (31), and the plurality of cooling fins (36) are arranged in a staggered manner, and the tops of the plurality of cooling fins (36) are in contact with the top of the inner wall of the cooling box (3), and both ends of the cooling box (3) are provided with an air outlet pipe (38), and a second flange (37) is fixedly mounted on one end of the air outlet pipe (38) away from the filter cartridge (21); A fixing plate is provided at one end of the exhaust pipe (11) close to the cooling box (3); the cooling box (3) is fixed to the fixing plate on the exhaust pipe (11) via a second flange (37); and a sealing gasket is provided at the joint between the exhaust pipe (11) and the second flange (37).

4. The automobile exhaust system connecting pipe structure according to claim 1, characterized in that: The pipeline cooling assembly (4) comprises two first water supply pipes (41), the two first water supply pipes (41) are respectively fixedly mounted on both sides of the air outlet pipe (38), the two first water supply pipes (41) are both connected to the cooling chamber (31), one of the first water supply pipes (41) is connected to the interior of the refrigeration box (33), and the other first water supply pipe (41) is connected to the circulation pipe (35), and a micro water pump is provided at one end of the two first water supply pipes (41) close to the cooling box (3); The pipeline cooling assembly (4) further comprises a cooling ring (49), the cooling ring (49) being sleeved on the exhaust pipe (11), a connecting pipe being arranged inside the cooling ring (49), and the ends of the two first water supply pipes (41) away from the pipeline cooling assembly (4) both extending into the cooling ring (49) and being fixed to the two ends of the connecting pipe respectively.

5. The automobile exhaust system connecting pipe structure according to claim 4, characterized in that: The two first water supply pipes (41) are each provided with a connection groove (42) at one end away from the cooling box (3); a plurality of slide bars (43) are slidably connected to the inner wall of each first water supply pipe (41); an end of each slide bar (43) away from the inside of the first water supply pipe (41) is fixedly connected to a return spring; and the other end of each return spring is fixedly installed in the inner wall of an adjacent first water supply pipe (41); Each of the first water supply pipes (41) is provided with a sealing plate (44), the side of the sealing plate (44) close to the connection groove (42) abuts against the bottom of the first water supply pipe (41), and the bottom of the sealing plate (44) is fixed to the adjacent sliding rod (43), and the diameter of the sealing plate (44) is smaller than the diameter of the first water supply pipe (41).

6. The automobile exhaust system connecting pipe structure according to claim 4, characterized in that: The end of the first water supply pipe (41) away from the cooling box (3) is slidably connected to the second water supply pipe (45); the side of the second water supply pipe (45) close to the first water supply pipe (41) is fixedly connected to a plug-in pipe (46), and the plug-in pipe (46) is slidably plugged into the connection groove (42); a plurality of water inlet grooves (47) are also provided on the surface of the plug-in pipe (46) close to the top; the end of the plug-in pipe (46) close to the first water supply pipe (41) is in contact with the sealing plate (44); and the second water supply pipe (45) is connected to the first water supply pipe (41) via the plug-in pipe (46); A sealing gasket is provided at the joint between the second water supply pipe (45) and the first water supply pipe (41); threads are provided on the outer surfaces of the first water supply pipe (41) and the second water supply pipe (45); a fixing ring (48) is threadedly connected to the second water supply pipe (45); and the second water supply pipe (45) is fixed to the first water supply pipe (41) via the fixing ring (48).

7. The automobile exhaust system connecting pipe structure according to claim 1, characterized in that: An air intake pipe (22) is installed on a side of the filter cartridge (21) close to the connecting pipe (1); a first flange (24) is fixedly installed on a side of the air intake pipe (22) close to the connecting pipe (1); fixing bolts are provided on the first flange (24); the filter cartridge (21) is fixed to the connecting pipe (1) via the first flange (24); a sealing ring (25) is provided at the junction of the first flange (24) and the connecting pipe (1); A connector (23) is fixedly mounted on the air outlet end of the filter cartridge (21), and the other end of the connector (23) is fixed in an air outlet pipe (38) on the cooling box (3).

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