Waterproof valve of automobile exhaust system

Abstract

The invention belongs to a waterproof valve of an automobile exhaust system in the technical field of automobile exhaust systems. The switching unit (2) comprises a valve seat (26), a first opening (27) and a second opening (28) are formed in the valve seat (26), a valve ball (22) is arranged in a middle cavity (29) in the valve seat (26), a wave spring (23) is arranged on the inner side of the first opening (27), a wave gasket (24) is arranged on the inner side of the wave spring (23), a sealing block (25) is arranged on the inner side of the wave gasket (24), a wave spring (23) is arranged on the inner side of the second opening (28), and a wave gasket (24) is arranged on the inner side of the wave spring (23). And a sealing block (25) is arranged on the inner side of the waveform gasket (24). The waterproof valve of the automobile exhaust system is simple in structure and high in sealing capacity, the requirement for high-temperature exhaust can be met by opening the waterproof valve, water can be prevented from entering an engine through an exhaust pipe by closing the waterproof valve, and damage to the engine is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile exhaust systems, and more specifically, relates to a waterproof valve for an automobile exhaust system. Background Art

[0002] With the increase in automobile application scenarios, the current sealing methods for automobile exhaust pipes are: 1. Changing the pipe diameter and opening holes in the exhaust pipe will lead to a decrease in sealing ability; 2. Adding a secondary exhaust pipe, the height of the secondary exhaust pipe from the ground is better than that of the main exhaust pipe, thereby increasing the wading depth. This method has a complex structure and is limited by the height of the automobile chassis, so the improvement is limited.

[0003] There is a technology named "An Automobile Engine Waterproof Flooding System" and the publication (announcement) number "CN103089432B" in the prior art. The technology relates to the technical field of general measures for producing and maintaining the effective operation of machines or equipment in mechanical engineering, and specifically an automobile engine waterproof flooding system. A first waterproof valve is provided on the engine intake pipe, and the other end of the first waterproof valve is connected to the air intake pipe. A second waterproof valve is provided on the exhaust gas outlet pipe of the engine exhaust muffler, and the other end of the second waterproof valve is connected to the exhaust pipe. The first and second waterproof valves are provided with a switch control circuit, and the positive and negative poles of the switch control circuit power supply are connected to the positive and negative poles of the automobile battery. Through the control switch in the cab, the valves on the automobile intake and exhaust pipe are closed to prevent water from entering the engine. The present invention can effectively prevent water from entering the engine through two waterproof valves, thereby reducing the damage to the engine caused by the automobile being flooded. The waterproof system is simple to operate, safe and reliable, and the valves are in a power-free state during driving, and will not move at all, which does not affect driving safety.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a waterproof valve for an automobile exhaust system is provided which has a simple structure and strong sealing ability, which can meet the requirements of high-temperature exhaust by opening, and can prevent water from entering the engine through the exhaust pipe by closing, thereby avoiding damage to the engine.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0007] The present invention is a waterproof valve for an automobile exhaust system. The switching unit includes a valve seat. A first opening and a second opening are arranged on the valve seat. A valve ball is arranged in a middle cavity inside the valve seat. A wave spring is arranged inside the first opening. A wave gasket is arranged inside the wave spring. A sealing block is arranged inside the wave gasket. A wave spring is arranged inside the second opening. A wave gasket is arranged inside the wave spring. A sealing block is arranged inside the wave gasket.

[0008] The valve ball is connected to the valve shaft, and the valve shaft is connected to the execution unit.

[0009] The valve ball comprises a valve ball channel which passes through the valve ball.

[0010] The switching unit is installed on the exhaust pipe of the exhaust system.

[0011] A motor is arranged in the unit housing of the execution unit, a worm on the rotating shaft of the motor meshes with an intermediate gear, the intermediate gear meshes with a sector gear, and a connecting sleeve of the sector gear is fixedly connected to the valve shaft.

[0012] The execution unit and the switching unit are respectively connected to the intermediate bracket.

[0013] A water wading sensor is arranged on the exhaust pipe of the exhaust system, and the water wading sensor is connected to the engine management system (EMS).

[0014] A magnet-sensor system is arranged on the sector gear, and the Hall sensor is connected to the engine management system (EMS) via a connecting plug.

[0015] A connecting plug is arranged on the unit housing of the execution unit, the connecting plug is connected to the motor, and the connecting plug is connected to the Hall sensor.

[0016] The execution unit and the switching unit are connected to the intermediate bracket via screws respectively.

[0017] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0018] The automobile exhaust system waterproof valve described in the present invention, the execution unit is a component used to control the switching of the switching unit, the switching unit is a component that realizes the switching between opening and closing, and the switching unit includes a valve seat, a first opening and a second opening are arranged on the valve seat, the valve seat at one end of the first opening is connected to the exhaust pipe, and can be reliably connected to the exhaust pipe, and the second opening is used for exhaust. A valve ball is arranged in the middle cavity inside the valve seat, and when the execution unit controls the valve ball to rotate in different directions, the rotation of the valve ball realizes the opening and closing of the middle cavity, and does not affect the normal exhaust when opened, and can wade when closed when wading. A wave spring is arranged inside the first opening, a wave gasket is arranged inside the wave spring, and a sealing block is arranged inside the wave gasket, so that the wave spring can reliably act on the wave gasket, the wave gasket can reliably act on the sealing block, and the sealing block can reliably act on the valve ball, so that the valve seat and the valve ball are completely fitted, and the sealing is reliably realized. A wave spring is arranged inside the second opening, a wave gasket is arranged inside the wave spring, and a sealing block is arranged inside the wave gasket. The wave spring can reliably act on the wave gasket, the wave gasket can reliably act on the sealing block, and the sealing block can reliably act on the valve ball, so that the valve seat and the valve ball can be completely fitted and the sealing can be reliably achieved. In the structure of the present invention, 1. When the car is driving on the road normally, the waterproof valve is in the open state, that is, the valve ball in the middle cavity inside the valve seat rotates to connect the first opening and the second opening, and the engine exhaust is normally achieved through the valve seat. 2. When the car enters other modes (such as navigation mode), when the wading depth of the car reaches a certain height, the wading sensor transmits a signal to the engine management system (EMS), and then sends an instruction to the waterproof valve, and the switching unit of the waterproof valve is turned to the closed state, that is, the valve ball in the middle cavity inside the valve seat rotates to disconnect the first opening and the second opening. When the switching unit is switched on and off, the switching unit drives the rotation of the valve shaft and the valve ball through the rotation of the execution unit, so as to realize the opening and closing of the waterproof valve. The sealing of the waterproof valve is mainly provided by the lateral force of the wave spring, which acts on the wave spring gasket, the sealing block and the valve seat in turn, and the sealing of the switching unit is reliably achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 It is a structural schematic diagram of the automobile exhaust system waterproof valve of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the execution unit of the automobile exhaust system waterproof valve according to the present invention;

[0022] Figure 3 It is a structural schematic diagram of the switching unit of the automobile exhaust system waterproof valve according to the present invention;

[0023] The marks in the accompanying drawings are respectively: 1. actuator unit; 10. connecting sleeve; 11. motor; 12. worm; 13. intermediate gear; 14. sector gear; 15. connecting plug; 16. unit housing; 2. switching unit; 20. valve ball channel; 21. valve shaft; 22. valve ball; 23. wave spring; 24. wave gasket; 25. sealing block; 26. valve seat; 27. first opening; 28. second opening; 29. ​​middle cavity; 3. intermediate bracket; 4. exhaust pipe. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various components involved, the function and working principle of each part, etc., through the description of the embodiments with reference to the accompanying drawings:

[0025] As attached Figure 1 -Attached Figure 3As shown, the present invention is a waterproof valve for automobile exhaust system, the switching unit 2 includes a valve seat 26, a first opening 27 and a second opening 28 are arranged on the valve seat 26, a valve ball 22 is arranged in the middle cavity 29 inside the valve seat 26, a wave spring 23 is arranged inside the first opening 27, a wave gasket 24 is arranged inside the wave spring 23, a sealing block 25 is arranged inside the wave gasket 24, a wave spring 23 is arranged inside the second opening 28, a wave gasket 24 is arranged inside the wave spring 23, and a sealing block 25 is arranged inside the wave gasket 24. The above structure proposes an improved technical solution to the shortcomings of the prior art. When the structure is set, an execution unit 1 and a switching unit 2 are set, the execution unit 1 is a component for controlling the switching of the switching unit, and the switching unit 2 is a component for realizing the switching between opening and closing. The switching unit 2 includes a valve seat 26, a first opening 27 and a second opening 28 are arranged on the valve seat 26, the valve seat at one end of the first opening 27 is connected to the exhaust pipe and can be reliably connected to the exhaust pipe, and the second opening 28 is used for exhaust. A valve ball 22 is arranged in the middle cavity 29 inside the valve seat 26. When the actuator controls the valve ball to rotate in different directions, the rotation of the valve ball realizes the opening and closing of the middle cavity. When it is opened, it does not affect the normal exhaust. When it is closed when wading, it can wade reliably. A wave spring 23 is arranged inside the first opening 27, a wave gasket 24 is arranged inside the wave spring 23, and a sealing block 25 is arranged inside the wave gasket 24. In this way, the wave spring 23 can reliably act on the wave gasket 24, the wave gasket 24 can reliably act on the sealing block, and the sealing block can reliably act on the valve ball 22, so that the valve seat 26 and the valve ball 22 are completely fitted and reliably sealed. A wave spring 23 is arranged inside the second opening 28, a wave gasket 24 is arranged inside the wave spring 23, and a sealing block 25 is arranged inside the wave gasket 24. The wave spring 23 can reliably act on the wave gasket 24, the wave gasket 24 can reliably act on the sealing block, and the sealing block 25 can reliably act on the valve ball 22, so that the valve seat 26 and the valve ball 22 can be completely fitted and reliably sealed. In the structure of the present invention, 1. When the car is driving on the road normally, the waterproof valve is in the open state, that is, the valve ball 22 in the middle cavity 29 inside the valve seat 26 rotates to connect the first opening 27 and the second opening 28, and the engine exhaust is normally achieved through the valve seat 26. 2. When the car enters other modes (such as navigation mode), when the wading depth of the car reaches a certain height, the wading sensor transmits a signal to the engine management system (EMS), and then sends an instruction to the waterproof valve, and the switching unit 2 is turned to the closed state, that is, the valve ball 22 in the middle cavity 29 inside the valve seat 26 rotates to disconnect the first opening 27 and the second opening 28. When the switching unit 2 is switched on and off, the switching unit 2 drives the rotation of the valve shaft 21 and the valve ball 22 through the rotation of the execution unit 1, thereby realizing the opening and closing of the waterproof valve. The sealing of the waterproof valve is mainly provided by the lateral force of the wave spring 23, which acts on the wave spring gasket 24, the sealing block 25 and the valve seat 26 in sequence, thereby reliably achieving the sealing of the switching unit 2.The automobile exhaust system waterproof valve of the present invention has a simple structure and a strong sealing ability. It can meet the requirement of high-temperature exhaust by opening, and can prevent water from entering the engine through the exhaust pipe by closing, thereby avoiding damage to the engine.

[0026] The valve ball 22 is connected to the valve shaft 21, and the valve shaft 21 is connected to the actuator 1. In the above structure, the valve ball 22 is fixedly connected to the valve shaft 21, and the valve shaft 21, as a component of the actuator 1, can drive the valve shaft 21 to rotate when the motor 11 rotates, and can rotate in different directions.

[0027] The valve ball 22 includes a valve ball channel 20 that passes through the valve ball 22. The switching unit 2 is installed on the exhaust pipe 4 of the exhaust system. In the above structure, when the control switching unit is turned on, the valve ball channel is connected to the first opening 27 and the second opening 28, and exhaust can be performed through the first opening 27, the valve ball channel 20, and the second opening 28. When the control switching unit 2 is closed, the valve ball 22 rotates a certain angle under the control of the valve shaft 21. At this time, the valve ball channel 20 is no longer connected to the first opening 27 and the second opening 28. At this time, the switching unit 2 is closed by the rotation of the valve ball 22, which meets the waterproof requirements of the car when wading, and prevents water from entering the exhaust pipe and the engine.

[0028] The motor 11 is arranged in the unit housing 16 of the actuator 1, the worm 12 on the rotating shaft of the motor 11 meshes with the intermediate gear 13, the intermediate gear 13 meshes with the sector gear 14, and the connecting sleeve 10 of the sector gear 14 is fixedly connected to the valve shaft 21. In the above structure, the actuator 1 is connected to the car battery through the connector 15 to realize the power supply of the motor 11. The motor is a DC motor. When the motor 11 rotates, the motor drives the worm 12, the intermediate gear 13 and the sector gear 14 to rotate, the connecting sleeve 10 of the sector gear 14 drives the valve shaft 21 to rotate, and the valve shaft 21 drives the valve ball 22.

[0029] The execution unit 1 and the switching unit 2 are respectively connected to the intermediate bracket 3. The execution unit 1 and the switching unit 2 are respectively connected to the intermediate bracket 3 by screws. In the above structure, the intermediate bracket can reliably realize the fixed connection between the execution unit 1 and the switching unit 2, ensuring reliable connection.

[0030] A wading sensor is arranged on the exhaust pipe 4 of the exhaust system, and the wading sensor is connected to the engine management system EMS. With the above structure, when the car wades, the wading sensor senses that the car wades, and the wading sensor feeds back a signal to the engine management system (EMS). The engine management system EMS controls the execution unit to act, and the execution unit 1 controls the switching unit 2 to realize the shutdown of the execution unit 1. At this time, when the car wades, no water will enter the engine from the exhaust pipe 4, thereby avoiding engine damage.

[0031] The sector gear 14 is provided with a magnet-sensor system, the magnet of the magnet-sensor system is fixedly provided on the sector gear 14, and the Hall sensor of the magnet-sensor system is connected to the engine management system (EMS) via a connecting plug (15). In the above structure, the magnet on the sector gear 14 rotates synchronously with the sector gear 14, changing the direction of the magnetic induction line. This change will be recognized by the Hall sensor, and the recognized model will be converted into an electrical signal, which will be transmitted to the engine management system (EMS) through the connector 15, and the state of the waterproof valve will be fed back in real time in the form of an electrical signal. The structure of the waterproof valve of the present invention realizes the interaction between the waterproof valve and the engine management system (EMS) in the form of electrical signals, and the opening and closing of the waterproof valve can be realized according to instructions.

[0032] The unit housing 16 of the actuator 1 is provided with a connecting plug 15, which is connected to the motor 11 and the Hall sensor. In the above structure, the connecting plug is connected to the battery on one hand and to the motor on the other hand to supply power to the motor.

[0033] The structure of the present invention, 1. Compared with other waterproof valves or waterproof devices, this invention does not need to add a secondary exhaust pipe, and is directly connected to the main exhaust pipe by welding. 2. Through the combination of graphite sealing blocks, wave springs, metal valve seats and valve balls, the requirements of structural sealing and waterproofing are met, while enduring the high temperature impact during exhaust. Functional advantages: 1. Connecting to the engine management system (EMS) through a wiring harness, the status of the waterproof valve is fed back in real time in the form of electrical signals; 2. The waterproof valve can be opened and closed according to the instructions of the engine management system (EMS).

[0034] The automobile exhaust system waterproof valve of the present invention is provided with an execution unit 1 and a switching unit 2 when the structure is set. The execution unit 1 is a component for controlling the switching of the switching unit, and the switching unit 2 is a component for realizing the switching between opening and closing. The switching unit 2 includes a valve seat 26, and a first opening 27 and a second opening 28 are provided on the valve seat 26. The valve seat at one end of the first opening 27 is connected to the exhaust pipe and can be reliably connected to the exhaust pipe, and the second opening 28 is used for exhaust. A valve ball 22 is provided in the middle cavity 29 inside the valve seat 26. When the execution unit controls the valve ball to rotate in different directions, the rotation of the valve ball 22 realizes the opening and closing of the middle cavity 29. When it is opened, it does not affect the normal exhaust of the exhaust pipe. When it is closed when wading, it can reliably prevent water from wading. A wave spring 23 is arranged inside the first opening 27, a wave gasket 24 is arranged inside the wave spring 23, and a sealing block 25 is arranged inside the wave gasket 24, so that the wave spring 23 can reliably act on the wave gasket 24, the wave gasket 24 can reliably act on the sealing block, and the sealing block can reliably act on the valve ball 22, so that the valve seat 26 and the valve ball 22 can be fully fitted and reliably sealed. A wave spring 23 is arranged inside the second opening 28, a wave gasket 24 is arranged inside the wave spring 23, and a sealing block 25 is arranged inside the wave gasket 24. The wave spring 23 can reliably act on the wave gasket 24, the wave gasket 24 can reliably act on the sealing block 25, and the sealing block 25 can reliably act on the valve ball 22, so that the valve seat 26 and the valve ball 22 can be fully fitted and reliably sealed. In the structure of the present invention, 1. When the car is normally driving on the road, the waterproof valve is in the open state, that is, the valve ball 22 in the middle cavity 29 inside the valve seat 26 rotates to connect the first opening 27 and the second opening 28, and the engine exhaust is normally realized through the valve seat 26. 2. When the car enters other modes (such as navigation mode), when the wading depth of the car reaches a certain height, the wading sensor transmits a signal to the engine management system (EMS), and then sends an instruction to the waterproof valve, and the switching unit 2 of the waterproof valve is turned to the closed state, that is, the valve ball 22 in the middle cavity 29 inside the valve seat 26 rotates to disconnect the first opening 27 and the second opening 28. When the switching unit 2 is switched on and off, the switching unit 2 drives the rotation of the valve shaft 21 and the valve ball 22 through the rotation of the execution unit 1, thereby realizing the opening and closing of the waterproof valve. The sealing of the waterproof valve is mainly provided by the lateral force of the wave spring 23, which acts on the wave spring gasket 24, the sealing block 25 and the valve seat 26 in turn, and the sealing of the structure of the switching unit 2 is reliably realized.

[0035] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A waterproof valve for automobile exhaust system, characterized in that: The switching unit (2) comprises a valve seat (26), a first opening (27) and a second opening (28) are arranged on the valve seat (26), a valve ball (22) is arranged in a middle cavity (29) inside the valve seat (26), a wave spring (23) is arranged inside the first opening (27), a wave gasket (24) is arranged inside the wave spring (23), a sealing block (25) is arranged inside the wave gasket (24), a wave spring (23) is arranged inside the second opening (28), a wave gasket (24) is arranged inside the wave spring (23), and a sealing block (25) is arranged inside the wave gasket (24).

2. The automobile exhaust system waterproof valve according to claim 1, characterized in that: The valve ball (22) is connected to the valve shaft (21), and the valve shaft (21) is connected to the execution unit (1).

3. The automobile exhaust system waterproof valve according to claim 1 or 2, characterized in that: The valve ball (22) comprises a valve ball channel (20) penetrating the valve ball (22).

4. The automobile exhaust system waterproof valve according to claim 1 or 2, characterized in that: The switching unit (2) is installed on an exhaust pipe (4) of the exhaust system.

5. The automobile exhaust system waterproof valve according to claim 2, characterized in that: A motor (11) is arranged in a unit housing (16) of the actuator unit (1), a worm (12) on the rotating shaft of the motor (11) meshes with an intermediate gear (13), the intermediate gear (13) meshes with a sector gear (14), and a connecting sleeve (10) of the sector gear (14) is fixedly connected to a valve shaft (21).

6. The automobile exhaust system waterproof valve according to claim 2, characterized in that: The execution unit (1) and the switching unit (2) are respectively connected to the intermediate bracket (3).

7. The automobile exhaust system waterproof valve according to claim 7, characterized in that: A magnet-sensor system is arranged on the sector gear (14), the magnet is arranged on the sector gear (14), and the Hall sensor is connected to the engine management system via a connecting plug (15).

8. The automobile exhaust system waterproof valve according to claim 7, characterized in that: A connecting plug (15) is arranged on the unit housing (16) of the execution unit (1), the connecting plug (15) is connected to the motor (11), and the connecting plug (15) is connected to the Hall sensor.

9. The automobile exhaust system waterproof valve according to claim 6, characterized in that: The execution unit (1) and the switching unit (2) are respectively connected to the intermediate bracket (3) via screws.

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