Urea filling machine

Abstract

The utility model provides a urea filling machine which comprises a machine shell, an electronic weighing device is arranged at the bottom of the machine shell, a bearing frame is arranged at the upper end of the electronic weighing device, a material storage barrel is arranged at the upper end of the bearing frame, the bottom of the material storage barrel is an inclined face which is arranged upwards in an inclined mode, and the bottom of the material storage barrel is communicated with a material conveying channel which is arranged upwards in an inclined mode. A spiral material conveying rod is rotationally connected into the material conveying channel, and a material conveying motor is mounted at the upper end of the material conveying channel; a urea box is arranged in the machine shell, a feeding port is formed in the upper end of the urea box, a discharging pipe stretching into the feeding port is downwards arranged at the upper end of the conveying channel, a water purifier is arranged in the machine shell and below the urea box, the inlet end of the water purifier is communicated with a water inlet pipe, and the outlet end of the water purifier is communicated with the upper end of the urea box through a water outlet pipe. The lower end of the urea box outwards communicates with a liquid outlet pipe, and the free end of the liquid outlet pipe is connected with a filling gun through a liquid adding pipe. According to the utility model, the urea solution can be automatically prepared in the shell, so that the urea adding frequency can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of urea filling and relates to a urea filling machine. Background Art

[0002] With growing global awareness of environmental protection, particularly the continuous tightening of diesel vehicle exhaust emission standards, Selective Catalytic Reduction (SCR) technology has become a key means of reducing nitrogen oxide (NOx) emissions. In this technology, a urea solution (DEF or AUS 32) is injected into the exhaust pipe as a reducing agent, converting harmful NOx into harmless nitrogen and water through a chemical reaction. Therefore, ensuring an efficient supply of urea solution has become crucial for maintaining vehicle operation.

[0003] Currently, there are three common methods for refueling vehicles with urea: drum filling, mobile urea dispensers, and fixed urea filling. Drum filling is the most traditional method. While simple and straightforward, this method has significant drawbacks. First, drum urea is expensive, and each replacement requires manual handling, which is not only time-consuming and labor-intensive, but also increases the operator's workload. Second, the recycling and reuse of empty drums can easily introduce impurities, leading to secondary contamination and compromising the quality and performance of the automotive urea solution. Furthermore, storing empty drums requires additional space management.

[0004] In contrast, mobile urea filling machines and fixed urea filling stations offer more convenient solutions. Mobile urea filling machines are suitable for use in remote areas or temporary filling points, while fixed urea filling stations are mostly located in areas with heavy traffic, such as highway service areas or large gas stations. However, urea filling machines currently on the market generally only have a single filling function. The urea solution must be pre-mixed according to a specific formula by a specialized manufacturer and then distributed to various filling points through logistics. Although this model ensures the quality consistency of the urea solution, it also means that the equipment itself lacks flexibility, has a low degree of automation, and still requires a lot of manual intervention to complete the entire filling process, thereby increasing operating costs and reducing utilization efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a urea filling machine, which can automatically configure urea solution in a casing, thereby effectively reducing the frequency of urea addition and thus reducing operating costs.

[0006] In order to solve the above technical problems, the utility model provides a urea filling machine, comprising a casing, an electronic scale is provided at the bottom of the casing, a load-bearing frame is provided at the upper end of the electronic scale, a storage barrel is provided at the upper end of the load-bearing frame, the bottom of the storage barrel is an inclined surface arranged obliquely upward, the bottom of the storage barrel is connected to a feeding channel arranged obliquely upward along its inclination direction, the upper end of the feeding channel extends out of the storage barrel, a spiral feeding rod is rotatably connected in the feeding channel, and a feeding motor for driving the feeding channel to rotate is installed at the upper end of the feeding channel;

[0007] A urea tank is provided in the casing on one side of the upper end of the material delivery channel, a liquid level sensor for detecting the liquid level therein is provided at the upper end of the urea tank, a feed port is provided at the upper end of the material delivery channel, a feed pipe extending into the feed port is provided downwardly, a water purifier is provided in the casing and below the urea tank, an inlet end of the water purifier is connected to a water inlet pipe, a solenoid valve is provided on the water inlet pipe, a tap water interface connected to the water inlet pipe is provided on the rear side of the casing, and an outlet end of the water purifier is connected to the upper end of the urea tank through a water outlet pipe;

[0008] The lower end of the urea tank is connected to the outside with a liquid outlet pipe, the front side of the housing is connected to a liquid filling pipe connected to the free end of the liquid outlet pipe, the free end of the liquid filling pipe is connected to a filling gun, the front side of the housing is provided with a gun butt groove for placing the filling gun, the front side of the housing is provided with a touch operation panel, the touch operation panel is provided with an integrated circuit board, the electronic scale, the feeding motor, the solenoid valve and the liquid level sensor are all electrically connected to the integrated circuit board.

[0009] By adopting this technical solution, when the liquid level sensor detects that the solution in the urea tank is too low, the solenoid valve is controlled to open and tap water is introduced. The tap water is purified by the water purifier and then added to the urea tank. The feeding motor then starts to drive the spiral feeding rod according to the amount of water added to add urea granules to the urea tank. The amount of urea reduced during this process, as detected by the electronic scale, is the amount of urea added to the tank. A large amount of urea granules can be added to the storage tank at one time, and the urea solution is automatically prepared within the housing, effectively reducing the frequency of urea addition.

[0010] The present invention is further configured such that a stirring motor electrically connected to the integrated circuit board is installed at the upper end of the urea tank, and a power output shaft of the stirring motor is connected to a stirrer extending into the urea tank.

[0011] The present invention is further configured such that the water purifier includes a microfilter, an ultrafilter and a nanofilter which are connected in sequence, the inlet end of the microfilter is connected to the water inlet pipe, and the outlet end of the nanofilter is connected to the water outlet pipe.

[0012] The utility model is further configured such that a flow meter electrically connected to the integrated circuit board is provided on the liquid outlet pipe.

[0013] The present invention is further configured such that the upper end of the material storage barrel is backwardly connected to a material feeding port passing through the casing.

[0014] The present invention is further configured such that a sealing cover for covering the feeding port is hingedly connected to the rear side of the casing.

[0015] The present invention is further configured such that the liquid level sensor is a laser liquid level sensor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] First, the urea dispensing machine integrates full automation from urea granule replenishment to urea solution preparation to final filling, significantly reducing the need for manual intervention. The coordinated operation of an electronic scale, feed motor, stirring motor, and solenoid valve automatically adjusts the ratio of urea granules to purified water, improving work efficiency and reducing labor costs.

[0018] Secondly, the present invention uses a built-in water purifier to perform multi-stage filtration (microfilter, ultrafilter, and nanofilter) on tap water, ensuring the purity of the water used to prepare the urea solution, thereby improving the overall quality of the urea solution. High-quality urea solution helps to more effectively reduce nitrogen oxide emissions from diesel vehicle exhaust, achieving better environmental protection.

[0019] Third, the present invention utilizes advanced equipment such as laser level sensors and flow meters to precisely monitor and control the liquid level in the urea tank and the amount of urea solution during the filling process. This not only ensures consistent urea solution concentration each time it is prepared, but also allows users to intuitively understand the operating status of the equipment through the touch-sensitive operation panel, facilitating daily management and maintenance. It also helps optimize resource utilization and reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 Used to demonstrate the rear structure of the utility model;

[0022] Figure 3 It is a partial cross-sectional view used to show the internal structure of the casing;

[0023] Figure 4 It is a partial cross-sectional view used to show the internal structure of the storage barrel;

[0024] Figure 5 Mainly used to display the internal structure of the urea tank.

[0025] Among them, 1. Casing; 2. Electronic scale; 3. Load-bearing frame; 4. Storage barrel; 5. Feeding port; 6. Sealing cover; 7. Feeding channel; 8. Screw feeding rod; 9. Feeding motor; 10. Urea tank; 11. Stirring motor; 12. Agitator; 13. Liquid level sensor; 14. Feeding port; 15. Feeding pipe; 16. Microfilter; 17. Ultrafilter; 18. Nanofilter; 19. Water inlet pipe; 20. Solenoid valve; 21. Tap water interface; 22. Water outlet pipe; 23. Liquid outlet pipe; 24. Flow meter; 25. Liquid adding pipe; 26. Filling gun; 27. Gun holder slot; 28. Touch operation panel. DETAILED DESCRIPTION

[0026] The following is a detailed description of the urea dispensing machine proposed by the present invention, with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are highly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention. Identical or similar reference numerals in the drawings represent identical or similar components.

[0027] Example, see Figure 1-5 A urea filling machine includes a casing 1, an electronic scale 2 is provided at the bottom of the casing 1, a load-bearing frame 3 is provided at the upper end of the electronic scale 2, a storage barrel 4 is provided at the upper end of the load-bearing frame 3, the upper end of the storage barrel 4 is connected to a feeding port 5 that passes through the casing 1, and a sealing cover 6 is hingedly connected to the rear side of the casing 1 to cover the feeding port 5, so as to facilitate the replenishment of urea granules into the storage barrel 4 through the feeding port 5. The bottom of the storage barrel 4 is an inclined surface arranged upwardly, and the bottom of the storage barrel 4 is connected to a feeding channel 7 arranged upwardly along the inclined direction thereof. The upper end of the feeding channel 7 extends out of the storage barrel 4, and a spiral feeding rod 8 is rotatably connected to the feeding channel 7. The upper end of the feeding channel 7 is installed with a feeding motor 9 for driving the feeding channel 7 to rotate, and the urea in the storage barrel 4 is transported out through the spiral feeding rod 8.

[0028] A urea tank 10 is located within the housing 1, on one side of the upper end of the feed channel 7. A stirring motor 11 is mounted at the upper end of the urea tank 10. The power output shaft of the stirring motor 11 is connected to an agitator 12 that extends into the urea tank 10. A liquid level sensor 13 is located at the upper end of the urea tank 10 for detecting the liquid level therein. This laser level sensor 13 offers advantages such as non-contact measurement, unaffected by the properties of the medium, high accuracy and resolution, and compatibility with a variety of media and environmental conditions. A feed port 14 is located at the upper end of the urea tank 10. A discharge pipe 15 extending downwardly from the upper end of the feed channel 7 into the feed port 14 allows the urea in the feed channel 7 to be added to the urea tank 10 through the discharge pipe 15. A water purifier is provided in the housing 1 below the urea tank 10. The water purifier includes a microfilter 16, an ultrafilter 17 and a nanofilter 18 which are connected in sequence. The inlet end of the microfilter 16 is connected to a water inlet pipe 19, and a solenoid valve 20 is provided on the water inlet pipe 19. A tap water interface 21 connected to the water inlet pipe 19 is provided on the rear side of the housing 1. The outlet end of the nanofilter 18 is connected to the upper end of the urea tank 10 through a water outlet pipe 22. The water purifier performs multi-stage filtration on the tap water to improve the purity of the urea solution.

[0029] The lower end of the urea tank 10 is connected to a liquid outlet pipe 23 outwardly, and a flow meter 24 is provided on the liquid outlet pipe 23 for measuring the amount of urea solution added. The front side of the casing 1 is connected to a liquid adding pipe 25 connected to the free end of the liquid outlet pipe 23, and the free end of the liquid adding pipe 25 is connected to a filling gun 26. The filling gun 26 can use a commonly used refueling gun on the market, so it is not elaborated in detail. The front side of the casing 1 is provided with a gun butt groove 27 for placing the filling gun 26. The front side of the casing 1 is provided with a touch operation panel 28. An integrated circuit board (not shown) is provided in the touch operation panel 28. The electronic scale 2, the feeding motor 9, the stirring motor 11, the solenoid valve 20, the liquid level sensor 13 and the flow meter 24 are all electrically connected to the integrated circuit board.

[0030] Working Principle: When the liquid level sensor 13 detects that the solution in the urea tank 10 is too low, the solenoid valve 20 is controlled to open and tap water is introduced. The tap water is purified by the water purifier and then added to the urea tank 10. The feeding motor 9 then starts to drive the spiral feeding rod 8 to rotate according to the amount of water added, adding urea granules to the urea tank 10. The amount of urea added during this process, as detected by the electronic scale 2, is the amount of urea added to the urea tank 10. Finally, the stirring motor 11 drives the stirrer 12 to stir and dissolve the urea in the water. A large amount of urea granules can be added to the storage barrel 4 at one time, and the urea solution is automatically prepared in the housing 1, which can effectively reduce the frequency of urea addition.

[0031] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0032] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A urea filling machine, comprising a housing (1), an electronic weighing device (2) provided at the bottom of the housing (1), a load-bearing frame (3) provided at the upper end of the electronic weighing device (2), and a storage barrel (4) provided at the upper end of the load-bearing frame (3), characterized in that: The bottom of the material storage barrel (4) is an inclined surface arranged obliquely upward, and the bottom of the material storage barrel (4) is connected to a material delivery channel (7) arranged obliquely upward along the inclined direction thereof, the upper end of the material delivery channel (7) extends out of the material storage barrel (4), a spiral material delivery rod (8) is rotatably connected in the material delivery channel (7), and a material delivery motor (9) for driving the material delivery channel (7) to rotate is installed at the upper end of the material delivery channel (7); A urea tank (10) is provided on one side of the upper end of the feed channel (7) in the housing (1), a liquid level sensor (13) for detecting the liquid level inside the urea tank (10) is provided at the upper end of the urea tank (10), a feed port (14) is provided at the upper end of the feed channel (7), a feed pipe (15) extending downwardly into the feed port (14) is provided, a water purifier is provided in the housing (1) and below the urea tank (10), an inlet end of the water purifier is connected to a water inlet pipe (19), a solenoid valve (20) is provided on the water inlet pipe (19), a tap water interface (21) connected to the water inlet pipe (19) is provided on the rear side of the housing (1), and an outlet end of the water purifier is connected to the upper end of the urea tank (10) through a water outlet pipe (22); The lower end of the urea tank (10) is connected to a liquid outlet pipe (23) outwardly, the front side of the housing (1) is connected to a liquid adding pipe (25) connected to the free end of the liquid outlet pipe (23), the free end of the liquid adding pipe (25) is connected to a filling gun (26), the front side of the housing (1) is provided with a gun holder groove (27) for placing the filling gun (26), the front side of the housing (1) is provided with a touch operation panel (28), an integrated circuit board is provided in the touch operation panel (28), and the electronic weighing device (2), the feeding motor (9), the solenoid valve (20) and the liquid level sensor (13) are all electrically connected to the integrated circuit board.

2. A urea filling machine according to claim 1, characterized in that: A stirring motor (11) electrically connected to the integrated circuit board is installed at the upper end of the urea tank (10), and a power output shaft of the stirring motor (11) is connected to a stirrer (12) extending into the urea tank (10).

3. The urea filling machine according to claim 1, characterized in that: The water purifier comprises a microfilter (16), an ultrafilter (17) and a nanofilter (18) which are connected in sequence, wherein the inlet end of the microfilter (16) is connected to the water inlet pipe (19), and the outlet end of the nanofilter (18) is connected to the water outlet pipe (22).

4. The urea filling machine according to claim 1, characterized in that: The liquid outlet pipe (23) is provided with a flow meter (24) electrically connected to the integrated circuit board.

5. The urea filling machine according to claim 1, characterized in that: The upper end of the material storage barrel (4) is connected to a material feeding port (5) extending through the casing (1) at the rear.

6. A urea filling machine according to claim 5, characterized in that: A sealing cover (6) for covering the feeding port (5) is hingedly connected to the rear side of the casing (1).

7. The urea filling machine according to claim 1, characterized in that: The liquid level sensor (13) is a laser liquid level sensor (13).

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