Gas mixing device for processing urea solution for vehicles

Abstract

The utility model discloses a vehicle urea solution processing gas mixing device which comprises a mixing tank, the lower end of the mixing tank is provided with supporting legs, the mixing tank is internally provided with a cavity, the inner wall of the cavity of the mixing tank is fixedly provided with a spraying frame, and the upper surface of the mixing tank is provided with a feeding pipe in a penetrating manner; solution nozzles are evenly fixed to the lower surface of the spraying frame, a positioning column is connected to the top surface of a cavity of the mixing tank, and an air inlet pipe is fixed to the lower end of the mixing tank. The gas mixing device for processing the vehicle urea solution is provided with the feeding pipe and the gas outlet pipe, so that when the device works, the solution is sprayed and fed through the solution nozzles on the surface of the spraying frame, and meanwhile, the gas is fed through the gas nozzles on the surface of the gas outlet pipe, so that the contact area between the solution and the gas is increased, and the uniformity during mixing is improved; and through the cavity with the wide lower part and the narrow upper part of the gas guide pipe, the gas pressure is improved, the gas flow rate is increased, and the mixing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of urea processing, in particular to a gas mixing device for processing vehicle urea solution. Background Art

[0002] The SCR system includes a urea tank and an SCR catalytic reaction tank. When nitrogen oxides are found in the exhaust pipe, the urea tank automatically sprays out diesel exhaust treatment fluid. The diesel exhaust treatment fluid and nitrogen oxides undergo an oxidation-reduction reaction in the SCR catalytic reaction tank to generate pollution-free nitrogen and water vapor for discharge. Automotive urea is a necessary additive for the SCR solution. Engine manufacturers have begun to use SCR technology to meet the requirements of environmental protection departments. Diesel exhaust treatment fluid is commonly known in China as: automotive urea, automotive urea, automotive environmentally friendly urea, and diesel vehicle exhaust purification fluid. It is a consumable that must be used in SCR technology.

[0003] When processing the existing automotive urea solution, it is necessary to add aeration to assist the reaction and stirring. However, when the existing gas mixing device is used, the aeration area is small, which makes the reaction efficiency low. In addition, the small aeration area is not conducive to uniform mixing of aeration, which reduces the effect of the mixing process. Utility Model Content

[0004] The utility model aims to provide a gas mixing device for processing automotive urea solution, so as to solve the problems in the above background technology that the aeration area is small, resulting in low reaction efficiency, and the small aeration area is not conducive to uniform mixing of aeration.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air mixing device for processing automotive urea solution, comprising a mixing tank, a supporting foot is provided at the lower end of which, a cavity is provided inside the mixing tank, and a spray rack is fixed to the inner wall of the cavity of the mixing tank, a feed pipe is installed through the upper surface of the mixing tank, and solution nozzles are evenly fixed on the lower surface of the spray rack, a positioning column is connected to the top surface of the cavity of the mixing tank, and an air inlet pipe is fixed to the lower end of the mixing tank, and a connecting pipe is fixed to the side surface of the air inlet pipe, an air outlet pipe is fixedly connected to the outer surface of the positioning column, and an air guide pipe is connected between the air outlet pipe and the positioning column.

[0006] Preferably, the spray rack is annular in design, and a cavity is provided inside the spray rack, the positioning column is rotatably connected to the mixing tank, and the positioning column is rotatably connected to the air inlet pipe, and a liquid outlet pipe is installed on the side surface of the lower end of the mixing tank.

[0007] By adopting the above technical solution, the spraying range is increased through the annular design of the spraying frame, and the air outlet pipe is driven to rotate through the rotation of the positioning column.

[0008] Preferably, the air outlet pipe is of an annular design, and a connecting column is provided between the air outlet pipe and the positioning column, and a cavity is provided inside the air outlet pipe, a gas nozzle is provided on the surface of the air outlet pipe, and the gas nozzle is inclined upward, and a cavity which is wider at the bottom and narrower at the top is provided inside the air guide pipe.

[0009] By adopting the above technical solution, the gas is ejected through the gas nozzle surface of the gas outlet pipe.

[0010] Preferably, a stirring mechanism is provided inside the mixing tank, which drives the positioning column and the stirring ring to rotate respectively through a driving motor so as to stir the mixed raw materials.

[0011] By adopting the above technical solution, the positioning column and the stirring ring are driven to rotate by the stirring mechanism of the mixing tank through the driving motor.

[0012] Preferably, the stirring mechanism includes a driving motor fixed to the lower surface of the mixing tank, the output end of the driving motor is fixedly connected to a transmission gear, a connecting frame rotatably connected to the inside of the mixing tank is provided above the driving motor, and a stirring ring rotatably connected to the inner wall of the cavity is provided above the driving motor.

[0013] By adopting the above technical solution, the driving motor drives the transmission gear to rotate, so that the transmission gear drives the connecting frame to rotate.

[0014] Preferably, a sprocket is provided at one end of the rotating shaft of the transmission gear, a sprocket is provided at one end of the positioning column, and a transmission chain is provided between the sprocket of the positioning column and the sprocket of the transmission gear, a tooth block is provided on the surface of the connecting frame, and the connecting frame and the transmission gear are meshed and connected, and a stirring blade is provided on the inner wall of the stirring ring.

[0015] By adopting the above technical solution, the transmission gear drives the positioning column to rotate through the transmission chain.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the gas mixing device for processing vehicle urea solution:

[0017] 1. A feed pipe and an air outlet pipe are provided, so that when the device is working, the solution is sprayed and fed through the solution nozzle on the surface of the spray frame, and the air is taken in through the gas nozzle on the surface of the air outlet pipe, thereby increasing the contact area between the solution and the gas, improving the uniformity during mixing, and through the cavity with a wide bottom and a narrow top on the air guide pipe, it is convenient to increase the gas pressure, increase the gas flow rate and increase the mixing effect;

[0018] 2. A driving motor and a positioning column are provided, so that when the device is working, the driving motor drives the transmission gear to rotate, so that the transmission gear drives the positioning column to rotate through the transmission chain, so that the positioning column drives the air guide tube to rotate, so that the air guide tube can stir the raw materials, improve the mixing efficiency, and speed up the work;

[0019] 3. A stirring ring and a connecting frame are provided, so that when the device is working, the connecting frame is driven to rotate by the rotation of the transmission gear, so that the connecting frame drives the stirring ring to rotate in the opposite direction of the positioning column, thereby further improving the stirring efficiency through the fan blades on the surface of the stirring ring, and at the same time improving the stirring uniformity through stirring in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the overall top-sectional structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the top cross-sectional structure of the transmission gear and the connecting frame of the utility model.

[0024] In the figure: 1. mixing tank; 2. spray rack; 3. feed pipe; 4. solution nozzle; 5. positioning column; 6. air inlet pipe; 7. connecting pipe; 8. air outlet pipe; 9. air guide pipe; 10. gas nozzle; 11. liquid outlet pipe; 12. driving motor; 13. transmission gear; 14. connecting rack; 15. stirring ring. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-4The utility model provides a technical solution: a gas mixing device for processing automotive urea solution, comprising a mixing tank 1, a spray rack 2, a feed pipe 3, a solution nozzle 4, a positioning column 5, an air inlet pipe 6, a connecting pipe 7, an air outlet pipe 8, an air guide pipe 9, a gas nozzle 10, a liquid outlet pipe 11, a driving motor 12, a transmission gear 13, a connecting rack 14 and a stirring ring 15. The mixing tank 1 is provided with a supporting foot at its lower end, the spray rack 2 is an annular design, and a cavity is provided inside the spray rack 2. The positioning column 5 is rotatably connected to the mixing tank 1, and the positioning column 5 is rotatably connected to the air inlet pipe 6. The liquid outlet pipe 11 is installed on the side surface of the lower end of the mixing tank 1. When using the device, the solution is first introduced into the spray rack 2 through the feed pipe 3, so that the spray rack 2 guides the solution to the solution nozzle 4 through the internal cavity, so that the annularly distributed solution nozzle 4 sprays the solution evenly.

[0027] A cavity is provided inside the mixing tank 1, and a spray rack 2 is fixed to the inner wall of the cavity of the mixing tank 1. The air outlet pipe 8 is designed to be annular, and a connecting column is provided between the air outlet pipe 8 and the positioning column 5, and a cavity is provided inside the air outlet pipe 8. A gas nozzle 10 is provided on the surface of the air outlet pipe 8, and the gas nozzle 10 is inclined upward. A cavity that is wide at the bottom and narrow at the top is provided inside the air guide pipe 9, and the gas is introduced into the cavity of the positioning column 5 through the connecting pipe 7 and the air inlet pipe 6, and then the positioning column 5 guides the gas to the air guide pipe 9.

[0028] A feed pipe 3 is installed through the upper surface of the mixing tank 1, and solution nozzles 4 are evenly fixed on the lower surface of the spray frame 2. A stirring mechanism is arranged inside the mixing tank 1, which drives the positioning column 5 and the stirring ring 15 to rotate respectively through the driving motor 12 to stir the mixed raw materials, so that the cavity of the air guide tube 9 which is narrow at the bottom and wide at the top pressurizes the gas, thereby increasing the gas spraying rate, and sprays the gas to the sprinkled solution through the gas nozzle 10 inclined upward, thereby increasing the contact area.

[0029] A positioning column 5 is connected to the top surface of the cavity of the mixing tank 1, and an air inlet pipe 6 is fixed to the lower end of the mixing tank 1, and a connecting pipe 7 is fixed to the side surface of the air inlet pipe 6. The stirring mechanism includes a driving motor 12, which is fixed to the lower surface of the mixing tank 1. A transmission gear 13 is fixedly connected to the output end of the driving motor 12. A connecting frame 14 rotatably connected to the inside of the mixing tank 1 is arranged above the driving motor 12. A stirring ring 15 rotatably connected to the inner wall of the cavity is arranged above the driving motor 12. The driving motor 12 drives the transmission gear 13 to rotate, so that the transmission gear 13 drives the connecting frame 14 to rotate through the tooth block, so that the connecting frame 14 drives the stirring ring 15 to rotate, so that the fan blades on the inner wall of the stirring ring 15 stir and mix the raw materials.

[0030] An air outlet pipe 8 is fixedly connected to the outer surface of the positioning column 5, and an air duct 9 is connected between the air outlet pipe 8 and the positioning column 5. A sprocket is provided at one end of the rotating shaft of the transmission gear 13, a sprocket is provided at one end of the positioning column 5, and a transmission chain is provided between the sprocket of the positioning column 5 and the sprocket of the transmission gear 13. A tooth block is provided on the surface of the connecting frame 14, and the connecting frame 14 and the transmission gear 13 are meshed and connected. A stirring fan blade is provided on the inner wall of the stirring ring 15. At the same time, the transmission gear 13 drives the positioning column 5 to rotate through the transmission chain, and the positioning column 5 drives the air outlet pipe 8 and the air duct 9 to rotate, so that the uniformity of stirring and mixing is improved by rotating in opposite directions.

[0031] Working principle: when using the gas mixing device for processing automotive urea solution, firstly, the solution is introduced into the spraying frame 2 through the feed pipe 3, so that the solution nozzle 4 sprays the solution evenly, and the gas is introduced into the positioning column 5 through the air intake pipe 6 and the connecting pipe 7, so that the positioning column 5 guides the gas to the air guide pipe 9, and the gas is pressurized through the air guide pipe 9, so that the gas is sprayed from the gas nozzle 10 for mixing, and the transmission gear 13 is driven to rotate by the driving motor 12, so that the transmission gear 13 drives the connecting frame 14 and the stirring ring 15 to rotate, and at the same time, the transmission gear 13 drives the positioning column 5 to rotate through the transmission chain, thereby improving the uniformity and efficiency of stirring and mixing, and finally the raw materials are discharged through the liquid outlet pipe 11, which increases the overall practicality.

[0032] 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. An air mixing device for processing automotive urea solution, comprising a mixing tank (1), a supporting foot being arranged at the lower end thereof, a cavity being arranged inside the mixing tank (1), and a spraying frame (2) being fixed to the inner wall of the cavity of the mixing tank (1), a feed pipe (3) being installed through the upper surface of the mixing tank (1), and solution nozzles (4) being evenly fixed to the lower surface of the spraying frame (2), characterized in that: The top surface of the cavity of the mixing tank (1) is connected to a positioning column (5), an air inlet pipe (6) is fixed to the lower end of the mixing tank (1), and a connecting pipe (7) is fixed to the side surface of the air inlet pipe (6), an air outlet pipe (8) is fixed to the outer surface of the positioning column (5), and an air guide pipe (9) is connected between the air outlet pipe (8) and the positioning column (5).

2. The gas mixing device for processing vehicle urea solution according to claim 1, characterized in that: The spray rack (2) is of an annular design, and a cavity is provided inside the spray rack (2). The positioning column (5) is rotatably connected to the mixing tank (1), and the positioning column (5) is rotatably connected to the air inlet pipe (6). A liquid outlet pipe (11) is installed on the side surface of the lower end of the mixing tank (1).

3. The gas mixing device for processing vehicle urea solution according to claim 1, characterized in that: The air outlet pipe (8) is of an annular design, and a connecting column is provided between the air outlet pipe (8) and the positioning column (5), and a cavity is provided inside the air outlet pipe (8). A gas nozzle (10) is provided on the surface of the air outlet pipe (8), and the gas nozzle (10) is arranged to be inclined upward. A cavity which is wider at the bottom and narrower at the top is provided inside the air guide pipe (9).

4. The gas mixing device for processing vehicle urea solution according to claim 1, characterized in that: The mixing tank (1) is provided with a stirring mechanism inside, which drives the positioning column (5) and the stirring ring (15) to rotate respectively through a driving motor (12) so as to stir the mixed raw materials.

5. The gas mixing device for processing vehicle urea solution according to claim 4, characterized in that: The stirring mechanism comprises a driving motor (12), the driving motor (12) being fixed to the lower surface of the mixing tank (1), the output end of the driving motor (12) being fixedly connected to a transmission gear (13), a connecting frame (14) being rotatably connected to the inside of the mixing tank (1) being arranged above the driving motor (12), and a stirring ring (15) being rotatably connected to the inner wall of the cavity being arranged above the driving motor (12).

6. The gas mixing device for processing vehicle urea solution according to claim 5, characterized in that: A sprocket is provided at one end of the rotating shaft of the transmission gear (13), a sprocket is provided at one end of the positioning column (5), and a transmission chain is provided between the sprocket of the positioning column (5) and the sprocket of the transmission gear (13), a tooth block is provided on the surface of the connecting frame (14), and the connecting frame (14) and the transmission gear (13) are meshedly connected, and a stirring blade is provided on the inner wall of the stirring ring (15).

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