Urea preparation tank

Abstract

The utility model relates to a urea preparation tank which comprises a tank cover, a pure water storage tank, a first liquid outlet pipe, a first liquid level meter, a first water inlet pipe, a second water inlet pipe, a second liquid level meter, a second water outlet pipe, a second liquid outlet pipe and a urea preparation tank. According to the urea preparation tank, mixed liquid in the urea preparation box flows out of the first liquid outlet pipe through the circulating pump and then flows into the urea preparation box through the second liquid outlet pipe, and the prepared urea solution for the vehicle is fully fused through repeated circulation, so that the dissolving property is improved, the use of a stirring device is avoided, and the production cost is reduced. Therefore, frequent maintenance of the stirring device is not needed; the temperature in the urea preparation box can be flexibly adjusted by matching with the heating film, and the urea preparation box has the advantages of high temperature adjusting speed and energy conservation.

Description

Technical Field

[0001] The utility model belongs to the technical field of urea dissolution production equipment, and specifically relates to a urea configuration tank. Background Art

[0002] Diesel vehicle exhaust emissions have become a concern. Urea is usually used as a catalyst to treat its exhaust emissions. It is added to the diesel vehicle SCR system to treat the exhaust gas, and the batch preparation technology of urea has been industrialized for a long time. CN104437148 A discloses a preparation device for a vehicle urea solution, which uses a stirring blade to stir the urea crystals and ultrapure water added to the blending kettle, and at the same time, it is assisted by heating through a circulating hot water pipeline to finally prepare a vehicle urea solution. However, the device uses a stirring blade rotating part, which has a certain amount of maintenance work, and the circulating hot water needs to consume more electricity during the heating process, and the temperature value control has a certain inertia and is not easy to adjust. Utility Model Content

[0003] According to the related problems mentioned in the background technology, the utility model provides a urea configuration tank, including a tank cover 1, a pure water storage tank 2, a first liquid outlet pipe 3, a first liquid level gauge 4, a first water inlet pipe 5, a second water inlet pipe 6, a second liquid level gauge 7, a second water outlet pipe 8, a second liquid outlet pipe 9 and a urea preparation tank 10; the tank cover 1 is connected to the pure water storage tank 2, and then the pure water storage tank 2 cover is combined and closed, and a dosing port 11 for adding urea crystals is opened on the tank cover 1, and the first liquid outlet pipe 3, the first liquid level gauge 4 and the first water inlet pipe 6 are installed on the tank cover 1. water pipe 5; the urea preparation tank 10 is installed inside the pure water storage tank 2, and a second liquid outlet pipe 9 is installed below it and runs through the bottom of the pure water storage tank 2; the first liquid outlet pipe 3, the first liquid level meter 4 and the addition port 11 are located above the urea preparation tank 10, the first water inlet pipe 5 penetrates into the urea tank 10, and the addition port 11 is hinged with a addition port cover; the second water inlet pipe 6 and the second liquid level meter 7 are installed on the left side of the pure water storage tank 2, the second water outlet pipe 8 is installed below it, and the exhaust pipe 12 is installed on the upper part.

[0004] Furthermore, the pure water storage tank 2 is a square box, the urea preparation tank 10 is a cylindrical box, and the urea preparation tank 10 is located in the middle of the rear side of the pure water storage tank 2 .

[0005] Furthermore, the addition port 11 is opened near the middle position of the rear side of the pure water storage tank 2, and is a square shape with one side being an arc; the first liquid level gauge 4 is located in the middle position of the tank cover 1, the first water inlet pipe 5 and the first liquid outlet pipe 3 are located on the left and right sides of the first liquid level gauge 4, and the first liquid outlet pipe 3 is connected to the circulation pump.

[0006] Furthermore, the second liquid level meter 7 is located at the lower part of the left side near the back of the pure water storage tank 2, the second water inlet pipe 6 is located at the upper part of the left side near the front of the pure water storage tank 2, and the second water outlet pipe 8 is located at the left front corner below the pure water storage tank 2.

[0007] Furthermore, the second liquid outlet pipe 9 is located in the middle of the lower part of the urea preparation tank 10, and is divided into two pipelines, one of which is connected to the inlet of the circulation pump, and the other is connected to the outlet of the circulation pump.

[0008] Preferably, a heating film is installed on the side and bottom of the pure water storage tank 2 , preferably a coated carbon crystal heating film, so as to increase the pure water temperature and heat the vehicle urea solution preparation liquid in the urea preparation tank 10 .

[0009] Beneficial effect: The urea preparation tank described in the utility model uses a circulation pump to make the mixed liquid of the urea preparation box flow out from the first liquid outlet pipe 3, and then flow into the urea preparation box from the second liquid outlet pipe 9. After repeated circulation, the prepared automotive urea solution is fully integrated, which not only improves the solubility performance, but also avoids the use of stirring devices, and thus does not need to perform regular maintenance of the stirring devices; in combination with the use of a heating film, the temperature in the urea preparation box can be flexibly adjusted, and has the advantages of fast temperature adjustment speed and energy saving. The utility model is composed of a pure water storage tank and a urea preparation tank, which has the characteristics of integration and high system integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 This is a schematic diagram of the urea configuration tank structure;

[0012] Figure 2 for Figure 1 AA section view;

[0013] Figure 3 for Figure 1 The main view of

[0014] Figure 4 for Figure 1 Bottom view of

[0015] In the figure: a box cover 1, a pure water storage box 2, a first liquid outlet pipe 3, a first liquid level gauge 4, a first water inlet pipe 5, a second water inlet pipe 6, a second liquid level gauge 7, a second water outlet pipe 8, a second liquid outlet pipe 9, a urea preparation box 10, a dosing port 11, and an exhaust pipe 12. DETAILED DESCRIPTION

[0016] 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.

[0017] Please participate in the attached Figure 1-4 A urea preparation tank comprises a tank cover 1, a pure water storage tank 2, a first liquid outlet pipe 3, a first liquid level gauge 4, a first water inlet pipe 5, a second water inlet pipe 6, a second liquid level gauge 7, a second water outlet pipe 8, a second liquid outlet pipe 9 and a urea preparation tank 10; the tank cover 1 is connected to the pure water storage tank 2, and then the pure water storage tank 2 is closed by the cover, and a dosing port 11 for adding urea crystals is opened on the tank cover 1, and the first liquid outlet pipe 3, the first liquid level gauge 4 and the first water inlet pipe 5 are installed on the tank cover 1; the urea preparation tank 10 is provided with a first liquid outlet pipe 3, a first liquid level gauge 4 and a first water inlet pipe 5 ... The box 10 is installed inside the pure water storage tank 2, and a second liquid outlet pipe 9 is installed below it and runs through the bottom of the pure water storage tank 2; the first liquid outlet pipe 3, the first liquid level meter 4 and the addition port 11 are located above the urea tank 10, the first water inlet pipe 5 penetrates into the urea tank 10, and the addition port cover is hinged to the addition port 11; the second water inlet pipe 6 and the second liquid level meter 7 are installed on the left side of the pure water storage tank 2, a second water outlet pipe 8 is installed below it, and an exhaust pipe 12 is installed on its upper part.

[0018] Specifically, the pure water storage tank 2 is a square box, the urea preparation tank 10 is a cylindrical box, and the urea preparation tank 10 is located in the middle of the rear side of the pure water storage tank 2 .

[0019] The addition port 11 is opened near the middle position of the rear side of the pure water storage tank 2, and is a square shape with one side being an arc; the first liquid level gauge 4 is located in the middle position of the tank cover 1, the first water inlet pipe 5 and the first liquid outlet pipe 3 are located on the left and right sides of the first liquid level gauge 4, and the first liquid outlet pipe 3 is connected to the circulation pump.

[0020] The second liquid level meter 7 is located at the lower part of the left side near the back of the pure water storage tank 2, the second water inlet pipe 6 is located at the upper part of the left side near the front of the pure water storage tank 2, and the second water outlet pipe 8 is located at the left front corner below the pure water storage tank 2.

[0021] The second liquid outlet pipe 9 is located in the middle of the lower part of the urea preparation tank 10, and is divided into two pipelines, one of which is connected to the inlet of the circulation pump, and the other is connected to the outlet of the circulation pump.

[0022] Optionally, a heating film, preferably a coated carbon crystal heating film, is installed on the side and bottom of the pure water storage tank 2 to increase the pure water temperature and thus heat the automotive urea solution configuration liquid in the urea preparation tank 10 .

[0023] When the urea configuration tank is working: high-purity water enters the pure water storage tank 2 from the second water inlet pipe 6, and high-purity water enters the first water inlet pipe 5 through the second water outlet pipe 8; urea crystals are added into the urea preparation tank 10 from the addition port 11, and the addition port cover is closed, and the mixed liquid of the urea preparation tank 10 is extracted by a circulation pump and flows out from the first liquid outlet pipe 3, and then flows into the urea preparation tank 10 from the second liquid outlet pipe 9. After the circulation pump works for a period of time, the mixed liquid in the urea preparation tank 10 is fully mixed to obtain a vehicle urea solution. After stopping the circulation pump, the vehicle urea solution is taken out from the second liquid outlet pipe 9, flows out through the bypass pipe of the circulation pump, and is used for filling the diesel vehicle SCR system. In this process, due to the extreme cold in the cold season in the plateau area, a heating film can be used to supplement the temperature of the configuration liquid of the vehicle urea solution in the urea preparation tank 10 to avoid the unfavorable situation of urea crystallization. In addition, the first liquid level meter 4 is used to monitor the urea solution in the urea preparation tank 10 to prevent overflow, and the second liquid level meter 7 is used to monitor the high-purity water in the pure water storage tank 2 to prevent overflow, which has good safety.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A urea preparation tank, characterized in that: The invention comprises a box cover (1), a pure water storage box (2), a first liquid outlet pipe (3), a first liquid level gauge (4), a first water inlet pipe (5), a second water inlet pipe (6), a second liquid level gauge (7), a second water outlet pipe (8), a second liquid outlet pipe (9) and a urea preparation box (10); the box cover (1) is connected to the pure water storage box (2), and the pure water storage box (2) is then closed by the cover; a dosing port (11) for adding urea crystals is provided on the box cover (1); the first liquid outlet pipe (3), the first liquid level gauge (4) and the first water inlet pipe (5) are installed on the box cover (1); the urea preparation box (1 0) is installed inside the pure water storage tank (2), and a second liquid outlet pipe (9) is installed below it and runs through the bottom of the pure water storage tank (2); the first liquid outlet pipe (3), the first liquid level meter (4) and the dosing port (11) are located above the urea preparation tank (10), the first water inlet pipe (5) penetrates into the interior of the urea preparation tank (10), and the dosing port (11) is hingedly connected to a dosing port cover plate; a second water inlet pipe (6) and a second liquid level meter (7) are installed on the left side of the pure water storage tank (2), a second water outlet pipe (8) is installed below it, and an exhaust pipe (12) is installed on its upper part.

2. A urea preparation tank according to claim 1, characterized in that: The pure water storage tank (2) is a square box body, the urea preparation tank (10) is a cylindrical box body, and the urea preparation tank (10) is located in the middle of the rear side of the pure water storage tank (2); high-purity water storage components for coarse filtration and fine filtration are installed inside the pure water storage tank (2).

3. A urea preparation tank according to claim 2, characterized in that: The dosing port (11) is opened near the middle position of the rear side of the pure water storage tank (2) and is in the shape of a square with one side being an arc. The first liquid level gauge (4) is located in the middle position of the tank cover (1). The first water inlet pipe (5) and the first liquid outlet pipe (3) are located on the left and right sides of the first liquid level gauge (4). The first liquid outlet pipe (3) is connected to a circulation pump.

4. A urea preparation tank according to claim 3, characterized in that: The second liquid level gauge (7) is located at the lower part of the left side near the rear of the pure water storage tank (2), the second water inlet pipe (6) is located at the upper part of the left side near the front of the pure water storage tank (2), and the second water outlet pipe (8) is located at the left front corner below the pure water storage tank (2).

5. A urea preparation tank according to claim 4, characterized in that: The second liquid outlet pipe (9) is located in the middle of the lower part of the urea preparation box (10), and is divided into two pipes, one of which is connected to the inlet of the circulation pump, and the other is connected to the outlet of the circulation pump.

6. A urea preparation tank according to any one of claims 1 to 5, characterized in that: A heating film is installed on the side of the pure water storage tank (2).

7. A urea preparation tank according to claim 6, characterized in that: The heating film is a coated carbon crystal heating film.

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