Urea tank integrated with filling pipe

Abstract

The utility model provides a urea tank integrated with a filling pipe, which comprises a urea tank body, the upper end of the urea tank body is outwards provided with a liquid outlet pipe communicated with the inside of the urea tank body, the inner wall of the liquid outlet pipe is provided with a connecting ring far away from the opening of the liquid outlet pipe, the inner ring of the connecting ring is connected with a folding filling pipe which can be folded, and the folding filling pipe is a corrugated pipe. An air inlet penetrates through the connecting ring, a rubber hole blocking ring is connected to the side, away from an opening of the connecting ring, of the inner wall of the liquid outlet pipe, the rubber hole blocking ring blocks the air inlet and can be pushed by the air pressure difference to deform inwards to open the air inlet, the liquid outlet pipe is detachably connected with a sealing cover, and a sealing ring is arranged at the free end of the folding filling pipe. And a sealing slot matched and hermetically connected with the sealing ring is formed in the top in the sealing cover. The filling pipe and the urea tank are integrated, so that the filling pipe is prevented from being lost, and a user can conveniently fill urea manually.

Description

Technical Field

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

[0002] With the increasing awareness of environmental protection and the advancement of technology, reducing exhaust emissions has become one of the important issues in the global automotive industry. Especially in diesel engine vehicles, in order to reduce nitrogen oxides (NO X ) emissions, the Selective Catalytic Reduction (SCR) system has become an indispensable technical means. The core of this system is to use urea aqueous solution (also known as diesel exhaust fluid, DEF or AdBlue for short) to convert harmful nitrogen oxides into harmless nitrogen and water through chemical reactions.

[0003] Urea filling is a key link to ensure the normal operation of the SCR system, and its importance is self-evident. The traditional filling method is to add urea solution to the urea storage tank in the vehicle. At present, the urea filling solution adopted by most vehicles on the market relies on pre-packaged barreled urea solution. These barreled solutions are easy to transport and store, and can ensure that the quality of the solution meets the standard requirements, thereby ensuring the effect of exhaust gas treatment.

[0004] Since urea refilling is far less frequent than refueling, most users refill it by themselves. The barreled urea solution method has dominated the market because of its simple operation and easy access. However, many manufacturers do not provide a dedicated urea refilling tube when selling barreled urea solution. Even if they do, the urea refilling tube is easy to lose during storage because sometimes all the urea cannot be refilled at one time. This may cause users to encounter various inconveniences when manually refilling, such as difficulty in accurately controlling the refilling amount and easy overflow of the solution. Utility Model Content

[0005] The utility model aims to provide a urea tank with an integrated filling pipe, which integrates the filling pipe and the urea tank into one body, thereby preventing the filling pipe from being lost and facilitating users to manually fill urea.

[0006] To solve the above technical problems, the utility model provides a urea tank integrated with a filling pipe, which comprises a urea tank body. An outlet pipe communicating with the inside is arranged outward at the upper end of the urea tank body. A connecting ring is arranged on the inner wall of the outlet pipe away from its opening position. A foldable filling pipe is connected to the inner ring of the connecting ring. The foldable filling pipe is a corrugated pipe. An air inlet hole is formed through the connecting ring. A rubber hole-blocking ring is connected to the inner wall of the outlet pipe on the side of the connecting ring away from its opening. The rubber hole-blocking ring blocks the air inlet hole and can be deformed inward under the push of the air pressure difference to open the air inlet hole. The outlet pipe is detachably connected with a sealing cover. A sealing ring is arranged at the free end of the foldable filling pipe. A sealing slot matched with the sealing ring for sealing connection is arranged at the top inside the sealing cover.

[0007] By adopting the above technical solution, when filling urea, first unscrew the sealing cover, pull out the foldable filling pipe, and pull out the sealing ring from the sealing cover. Then, the free end of the foldable filling pipe can be inserted into the filling port of the urea tank. Lift the urea tank body to pour and fill the urea solution. During the filling process, the solution in the urea tank gradually decreases, the pressure drops, and the air pressure difference pushes the rubber hole-blocking ring inward to deform and open the air inlet hole, allowing air to enter to maintain air pressure balance, making the filling smoother. After filling, insert the sealing ring of the foldable filling pipe into the sealing slot of the sealing cover, fold the foldable filling pipe and put it into the outlet pipe, and then cover the sealing cover for the next filling.

[0008] The utility model is further arranged such that a handle is arranged at the upper end of the urea tank body.

[0009] The utility model is further arranged such that the outlet pipe is in threaded connection with the sealing cover.

[0010] The utility model is further arranged such that the length of the sealing cover is longer than that of the outlet pipe.

[0011] The utility model is further arranged such that a retaining ring matched with the sealing cover is arranged on the outer periphery of the outlet pipe away from its opening.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] First, the utility model integrates the filling pipe and the urea tank. When in use, directly pull out the foldable filling pipe for use, which is convenient for users to manually fill urea. At the same time, the integrated design will not have the problem of the filling pipe being lost, making it more convenient for secondary filling.

[0014] Second, through the design of the air inlet hole and the rubber hole plugging ring in the present utility model, the rubber hole plugging ring can be deformed inward under the push of the air pressure difference to open the air inlet hole, enabling air to enter the urea tank to maintain air pressure balance, and effectively solving the problem of poor liquid filling caused by the pressure difference due to the reduction of the internal solution during urea filling. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a diagram of the usage state of the present utility model;

[0017] Figure 3 is a partial cross-sectional view for showing the internal structure of the liquid outlet pipe;

[0018] Figure 4 is a partial cross-sectional view for showing the internal structure of the sealing cover.

[0019] Among them, 1. urea tank; 2. handle; 3. liquid outlet pipe; 4. connecting ring; 5. folding filling pipe; 6. air inlet hole; 7. rubber hole plugging ring; 8. sealing cover; 9. retaining ring; 10. sealing ring; 11. sealing slot. Detailed Embodiment

[0020] The following further details a urea tank with an integrated filling pipe proposed by the present utility model in conjunction with the drawings and specific embodiments. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0021] Embodiment, refer to Figures 1-4, A urea tank integrated with a filling pipe, comprising a urea tank body 1. A handle 2 is provided at the upper end of the urea tank body 1. An outlet pipe 3 communicating with its interior is obliquely arranged outward at the upper end of the urea tank body 1. A connecting ring 4 is arranged on the inner wall of the outlet pipe 3 away from its opening position. A foldable filling pipe 5 is connected to the inner circle of the connecting ring 4. The foldable filling pipe 5 is a corrugated pipe. A plurality of air inlet holes 6 distributed in a circular pattern are formed through the connecting ring 4. A rubber hole-blocking ring 7 is connected to the inner wall of the outlet pipe 3 on the side of the connecting ring 4 away from its opening. The rubber hole-blocking ring 7 blocks the air inlet holes 6 and can deform inward under the push of the pressure difference to open the air inlet holes 6. The outlet pipe 3 is threadedly connected with a detachable sealing cover 8. The length of the sealing cover 8 is longer than that of the outlet pipe 3. A retaining ring 9 matching with the sealing cover 8 is arranged on the outer circumference of the outlet pipe 3 away from its opening, so that the foldable filling pipe 5 can be stored in the outlet pipe 3 and the sealing cover 8. A sealing ring 10 is arranged at the free end of the foldable filling pipe 5. A sealing slot 11 matching with the sealing ring 10 for sealing connection is arranged on the top inside the sealing cover 8. The damping after the sealing ring 10 is connected with the sealing slot 11 is small, which is convenient for rotation. After the sealing ring 10 is inserted into the sealing slot 11 to form a sealing connection, it prevents the urea solution in the urea tank body 1 from overflowing through the foldable filling pipe 5.

[0022] Usage method: When filling urea, first unscrew the sealing cover 8, pull out the foldable filling pipe 5, and pull out the sealing ring 10 from the sealing cover 8. Then, the free end of the foldable filling pipe 5 can be inserted into the filling port of the urea tank. Lift the urea tank body 1 to pour and fill the urea solution. During the filling process, the solution in the urea tank body 1 gradually decreases, the pressure decreases, and the pressure difference pushes the rubber hole-blocking ring 7 to deform inward to open the air inlet holes 6, allowing air to enter to maintain air pressure balance, making the filling smoother. After filling, insert the sealing ring 10 of the foldable filling pipe 5 into the sealing slot 11 of the sealing cover 8. After folding the foldable filling pipe 5, put it into the outlet pipe 3. Covering the sealing cover 8 is convenient for the next filling.

[0023] It should be noted that the various embodiments in this specification are described in a progressive manner. The key points of each embodiment are the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0024] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention according to the above disclosure are within the scope of protection of the claims.

Claims

1. A urea tank integrated with a filling pipe, comprising a urea tank body (1), wherein a liquid outlet pipe (3) communicating with the inside is arranged outward at the upper end of the urea tank body (1), and it is characterized in that, A connecting ring (4) is arranged on the inner wall of the liquid outlet pipe (3) away from its opening position. A foldable filling pipe (5) is connected to the inner ring of the connecting ring (4). The foldable filling pipe (5) is a corrugated pipe. An air inlet hole (6) is provided through the connecting ring (4). A rubber hole-blocking ring (7) is connected to the inner wall of the liquid outlet pipe (3) on the side of the connecting ring (4) away from its opening. The rubber hole-blocking ring (7) blocks the air inlet hole (6) and can be deformed inward under the push of the air pressure difference to open the air inlet hole (6). The liquid outlet pipe (3) is detachably connected with a sealing cover (8). A sealing ring (10) is arranged at the free end of the foldable filling pipe (5). A sealing slot (11) which is in sealing connection with the sealing ring (10) is arranged at the top in the sealing cover (8).

2. The urea tank with an integrated filling pipe according to claim 1, characterized in that, A handle (2) is arranged at the upper end of the urea tank body (1).

3. The urea tank with an integrated filling pipe according to claim 1, characterized in that, The liquid outlet pipe (3) is in threaded connection with the sealing cover (8).

4. The urea tank with an integrated filling pipe according to claim 1, characterized in that, The length of the sealing cover (8) is longer than that of the liquid outlet pipe (3).

5. The urea tank with an integrated filling pipe according to claim 4, characterized in that, A retaining ring (9) which is matched with the sealing cover (8) is arranged on the outer periphery of the liquid outlet pipe (3) away from its opening.

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