Urea box with filling pipe

Abstract

The urea box with the filling pipe comprises a urea box body, the upper end of the urea box body is outwards provided with a feeding pipe communicated with the urea box body, the inner wall, away from an opening of the feeding pipe, of the feeding pipe is provided with a ventilation connecting ring, and the ventilation connecting ring is provided with a plurality of ventilation openings distributed in a circumferential mode. The edge of an opening of the ventilation connecting ring is outwards connected with a folding filling pipe, the feeding pipe is detachably connected with a cover body, a breathing layer is arranged in the cover body, a plurality of air inlet holes distributed in the circumference are formed in the breathing layer, and the side, facing the urea box, of the breathing layer is connected with a rubber air inlet hole blocking ring used for covering the air inlet holes. The breathing layer is provided with a plurality of circumferentially-distributed exhaust holes, the side, away from the urea box, of the breathing layer is connected with a rubber exhaust hole blocking ring used for covering the exhaust holes, and the outer side of the cover body is provided with vent holes communicated with the air inlet hole and the exhaust holes. The urea box is provided with the filling pipe, so that a user can conveniently fill urea, and internal and external air pressure in the urea box can be conveniently maintained to be balanced through the self-adaptive breathing design.

Description

Technical Field

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

[0002] With increasingly stringent environmental regulations and rising diesel engine emission standards, urea refill tanks, as a crucial component of diesel engine exhaust treatment systems, are becoming increasingly important. Urea refill tanks primarily store urea-water solution (commonly known as diesel exhaust fluid, DEF or AdBlue). This colorless, transparent liquid is primarily used in diesel engine Selective Catalytic Reduction (SCR) systems, where it chemically converts nitrogen oxides in exhaust gas into harmless nitrogen and water, thereby reducing harmful emissions and achieving environmental protection goals.

[0003] Urea refill tanks are widely used in heavy-duty trucks, buses, construction machinery, and other non-road mobile machinery. With the implementation of upgraded diesel vehicle exhaust emission standards, such as Euro VI and China VI, more and more vehicles are being equipped with urea refill tanks to meet these stringent emission requirements. Furthermore, with growing awareness of clean energy and environmental protection, the application of urea refill tanks is gradually expanding, not only to industrial vehicles but also to specialized vehicles.

[0004] However, in practice, refilling urea tanks still presents certain inconveniences. Currently, most urea tanks on the market require manual refilling using barreled urea solution. While this method is simple and straightforward, some manufacturers fail to provide dedicated refilling tubes with their barreled urea solution, which can lead to inconvenience for users when refilling on their own. Furthermore, without the appropriate refilling tools, the urea solution can easily spill during the filling process, resulting in waste and potentially environmental pollution. Utility Model Content

[0005] The purpose of the utility model is to provide a urea tank with a filling pipe. The urea tank has its own filling pipe, which is convenient for users to add urea and prevents urea from spilling. In addition, through the adaptive breathing design, the problem of pressure difference will not occur in the urea tank.

[0006] In order to solve the above technical problems, the utility model provides a urea tank with a filling pipe, comprising a urea tank, wherein the upper end of the urea tank is provided with a filling pipe communicating therewith, the inner wall of the feeding pipe away from the opening thereof is provided with a ventilation connecting ring, the ventilation connecting ring is provided with a plurality of vents distributed in a circumferential manner, the opening edge of the ventilation connecting ring is connected outwardly with a foldable filling pipe, the foldable filling pipe is a corrugated pipe that can be folded and retracted into the feeding pipe, the feeding pipe is detachably connected to a cover body, and a breathing layer is provided inside the cover body. The breathing layer is provided with a plurality of air inlet holes distributed in a circumferential manner, and a rubber air inlet plugging ring for covering the air inlet holes is connected to the side of the breathing layer facing the urea tank. The breathing layer is provided with a plurality of exhaust holes distributed in a circumferential manner, and a rubber exhaust plugging ring for covering the exhaust holes is connected to the side of the breathing layer away from the urea tank. The rubber air inlet plugging ring and the rubber exhaust plugging ring are only connected to the breathing layer on one side, and a vent hole connected to the air inlet hole and the exhaust hole is provided on the outer side of the cover body.

[0007] By adopting the above technical solution, when urea needs to be added, the cover is removed, the foldable filling tube is pulled out and unfolded, and the nozzle of the foldable filling tube is connected to the bottle mouth of the urea barrel. Then, the urea barrel can be directly lifted and urea can be directly poured into the urea barrel. During the process, the air in the urea barrel is discharged from the vent on the vent connection ring.

[0008] When the urea solution in the urea tank is gradually used, the internal pressure decreases, and the negative pressure generated pulls the rubber air inlet plugging ring to open the air inlet, allowing air to enter the urea tank from the outside through the vent and air inlet to maintain air pressure balance. When the solution in the urea tank crystallizes at low temperature, causing the volume to increase, the internal air pressure increases, and positive pressure is generated to push the rubber exhaust plugging ring to open the exhaust hole to exhaust air, thereby maintaining the air pressure balance in the urea tank and preventing damage to the urea tank.

[0009] The present invention is further configured such that a drawstring is provided on one side of the open end of the foldable filling tube.

[0010] The utility model is further configured such that a sealing ring which is sealed to the inner wall of the feeding pipe is provided on the side of the breathing layer facing the urea tank.

[0011] The utility model is further configured such that the outer diameter of the sealing ring gradually decreases toward the free end thereof.

[0012] The present invention is further configured such that the cover body is provided with a threaded connection sleeve which covers the feeding tube and has an internal thread, and the outer wall of the feeding tube is provided with an external thread which is threadably connected to the threaded connection sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] First, the urea tank of the present invention is designed with a built-in, foldable filling tube that can be simply pulled out and unfolded to connect to the urea bucket, greatly simplifying the filling process. This design avoids the inconvenience of filling caused by the lack of a filling tube in traditional methods, improves filling efficiency, and reduces the possibility of urea solution spilling during the filling process.

[0015] Secondly, by providing automatic opening and closing air inlet and exhaust holes within the lid, the urea tank automatically regulates the internal pressure during urea use. When the pressure drops, the rubber air inlet plugging ring automatically opens, allowing outside air in. Conversely, when the pressure rises, the rubber exhaust plugging ring automatically opens, releasing excess gas. This pressure-balancing mechanism not only helps maintain a stable internal state within the urea tank but also prevents damage to the tank due to pressure fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional view for showing the vent connection ring in the feeding pipe;

[0018] Figure 3 It is a partial cross-sectional view used to show the air inlet hole and the rubber exhaust plugging ring in the cover body;

[0019] Figure 4 It is a partial cross-sectional view used to show the exhaust hole and rubber air inlet plugging ring inside the cover body.

[0020] Among them, 1. urea tank; 2. feeding pipe; 3. ventilation connecting ring; 4. vent; 5. folding filling pipe; 6. draw buckle; 7. cover body; 8. threaded connection sleeve; 9. breathing layer; 10. air inlet; 11. rubber air inlet plugging ring; 12. exhaust hole; 13. rubber exhaust plugging ring; 14. vent; 15. sealing ring. DETAILED DESCRIPTION

[0021] The following is a detailed description of the urea tank with a filling pipe proposed by the present invention, combined with 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 clarify the purpose of illustrating the embodiments of the present invention. Identical or similar reference numerals in the drawings represent identical or similar components.

[0022] Example, see Figure 1-4A urea tank with a filling pipe includes a urea tank 1. A feeding pipe 2 connected to the urea tank 1 is provided outwardly at the upper end thereof. A ventilation connecting ring 3 is provided on the inner wall of the feeding pipe 2 away from its opening. The ventilation connecting ring 3 is provided with five vents 4 distributed in a circumference. A foldable filling pipe 5 is connected outwardly to the opening edge of the ventilation connecting ring 3. The foldable filling pipe 5 is a corrugated tube that can be folded and retracted into the feeding pipe 2. A pull buckle 6 is provided on one side of the open end of the foldable filling pipe 5. The foldable filling pipe 5 can be directly pulled out and unfolded when needed.

[0023] The feeding pipe 2 is detachably connected to a cover body 7, which is provided with a threaded connection sleeve 8 with an internal thread and which covers the feeding pipe 2. The outer wall of the feeding pipe 2 is provided with an external thread threadedly connected to the threaded connection sleeve 8. A breathing layer 9 is provided inside the cover body 7. The breathing layer 9 has four air inlet holes 10 distributed in a circle. The side of the breathing layer 9 facing the urea tank 1 is connected with a circle of rubber air inlet plugging rings 11 for covering the air inlet holes 10. The breathing layer 9 has four exhaust holes 12 distributed in a circle. A rubber exhaust plugging ring 13, used to cover the exhaust hole 12, is connected to the side of the suction layer 9 away from the urea tank 1. Both the rubber inlet plugging ring 11 and the rubber exhaust plugging ring 13 are connected to the breathing layer 9 on only one side. When the pressure inside the urea tank 1 is low, negative pressure is generated, pulling the rubber inlet plugging ring 11 to open the air inlet 10. When the pressure inside the urea tank 1 is high, positive pressure is generated, pushing the rubber exhaust plugging ring 13 to open the exhaust hole 12. A vent 14 is provided on the outside of the cover 7, communicating with the air inlet hole 10 and the exhaust hole 12. A sealing ring 15, sealingly connected to the inner wall of the feeding pipe 2, is provided on the side of the breathing layer 9 facing the urea tank 1. The outer diameter of the sealing ring 15 gradually decreases toward its free end.

[0024] Usage: When urea needs to be added, remove the cover 7, pull out the foldable filling tube 5 and unfold it, and connect the tube mouth of the foldable filling tube 5 to the bottle mouth of the urea barrel. Then you can directly lift the urea barrel and pour urea directly into the urea barrel. During the process, the air in the urea barrel is discharged from the vent 4 on the vent connecting ring 3.

[0025] Air pressure balance principle: When the urea solution in the urea tank 1 is gradually used, the internal pressure becomes smaller, and the negative pressure generated pulls the rubber air inlet plugging ring 11 to open the air inlet 10, allowing air to enter the urea tank 1 from the outside through the vent 14 and the air inlet 10 to maintain air pressure balance. When the solution in the urea tank 1 crystallizes at low temperature, causing the volume to increase, the internal air pressure increases, and positive pressure is generated to push the rubber exhaust plugging ring 13 to open the exhaust hole 12 to exhaust air, thereby maintaining the air pressure balance in the urea tank 1 and preventing the urea tank 1 from being damaged.

[0026] 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.

[0027] 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 tank with a filling pipe, comprising a urea tank (1), wherein the upper end of the urea tank (1) is provided with a feeding pipe (2) communicating therewith, characterized in that: The inner wall of the feeding pipe (2) away from the opening thereof is provided with a ventilation connection ring (3), the ventilation connection ring (3) is provided with a plurality of vents (4) distributed in a circumferential manner, the opening edge of the ventilation connection ring (3) is connected outwardly with a foldable filling pipe (5), the foldable filling pipe (5) is a corrugated pipe that can be folded and stored in the feeding pipe (2), the feeding pipe (2) is detachably connected with a cover body (7), the interior of the cover body (7) is provided with a breathing layer (9), the breathing layer (9) is provided with a plurality of air inlet holes (10) distributed in a circumferential manner, the breathing layer (9) faces the urea tank ( 1) is connected to one side of the cover (7) with a rubber air inlet plugging ring (11) for covering the air inlet hole (10), the breathing layer (9) is provided with a plurality of circumferentially distributed exhaust holes (12), the breathing layer (9) is connected to a side away from the urea tank (1) with a rubber exhaust plugging ring (13) for covering the exhaust holes (12), the rubber air inlet plugging ring (11) and the rubber exhaust plugging ring (13) are only connected to the breathing layer (9) on one side, and the outer side of the cover (7) is provided with an air vent (14) communicating with the air inlet hole (10) and the exhaust hole (12).

2. The urea tank with a filling pipe according to claim 1, characterized in that: A draw buckle (6) is provided on one side of the open end of the foldable filling pipe (5).

3. The urea tank with a filling pipe according to claim 1, characterized in that: A sealing ring (15) is provided on the side of the breathing layer (9) facing the urea tank (1) and is sealed to the inner wall of the feeding pipe (2).

4. The urea tank with a filling pipe according to claim 3, characterized in that: The outer diameter of the sealing ring (15) gradually decreases towards its free end.

5. The urea tank with a filling pipe according to claim 1, characterized in that: The cover body (7) is provided with a threaded connection sleeve (8) which is outer-circuited to the feeding tube (2) and has an internal thread, and the outer wall of the feeding tube (2) is provided with an external thread which is threadably connected to the threaded connection sleeve (8).

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