Urea filling pipe
By designing the air pressure balance system of the urea filling tube, the problems of blocked ventilation and poor flow during the urea filling process are solved, and fast and smooth urea filling is achieved, reducing the operator's physical consumption.
Patent Information
- Application Number
- CN202422026126.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing urea filling tubes are prone to block the urea box ventilation port during the filling process, resulting in the inability to discharge the air in the box smoothly, and the flow of the urea aqueous solution is not smooth, which increases the operator's physical energy consumption.
A urea filling pipe is designed, which uses components such as connecting sleeves, breathing pipes, one-way valves, main pipe bodies, injection pipes and box mouth stop rings to ensure that the air pressure balance is maintained in the urea box and urea barrel, and air is discharged through the exhaust holes to achieve fast and smooth urea filling.
By maintaining air pressure balance, urea can be poured quickly and smoothly, significantly reducing the operator's physical strength consumption and preventing the filling tube from falling out, causing the urea solution to spill out.
Smart Images
Figure CN222823301U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of filling pipes and relates to a urea filling pipe. Background Art
[0002] Urea filling system plays a vital role in modern diesel engine vehicles, especially in the field of heavy trucks and commercial vehicles. As environmental regulations on exhaust emission standards become increasingly stringent, Selective Catalytic Reduction (SCR) technology has become one of the effective means to reduce nitrogen oxide (NOx) emissions. This technology injects urea aqueous solution (commonly known as Diesel Exhaust Fluid, DEF) into the exhaust system, which reacts chemically with nitrogen oxides at high temperatures and converts them into harmless nitrogen and water vapor.
[0003] In order to ensure that the urea aqueous solution can be added to the vehicle's urea tank in a timely and effective manner, a special urea filling tube is usually used for manual filling. The existing filling method is generally that the operator inserts the filling tube into the urea tank, connects the other end to the urea bucket filled with urea aqueous solution, and then pours the urea aqueous solution into the urea tank. However, there are some problems in the actual operation process: when the urea filling tube is inserted into the urea tank, it will partially or completely block the vent of the box, resulting in the air in the box being unable to be discharged smoothly; at the same time, as the urea aqueous solution flows out of the urea tank, a negative pressure is formed inside the urea tank, and it is difficult to replenish air in time, which not only makes the flow of the urea aqueous solution become unsmooth, but also the operator needs to lift the urea bucket for a long time to pour the urea solution, resulting in greater physical exertion of the operator. Utility Model Content
[0004] The utility model aims to provide a urea filling pipe, which has the functions of exhausting the urea box and one-way air intake of the urea barrel, so that the air pressure in the urea box and the urea barrel can be kept balanced, urea can be dumped quickly and smoothly, and the physical exertion of the operator can be effectively reduced.
[0005] In order to solve the above technical problems, the utility model provides a urea filling pipe, comprising a connecting sleeve detachably connected to the bottle mouth of a urea barrel, one end of the connecting sleeve is connected with a breathing tube, one side of the breathing tube is provided with a one-way valve, the one-way valve is connected toward the inner side of the breathing tube, the end of the breathing tube away from the connecting sleeve is connected with a main pipe body, the free end of the main pipe body is connected with an injection pipe, the outer periphery of the injection pipe close to one end of the main pipe body is provided with a box mouth retaining ring, the outer diameter of the box mouth retaining ring is larger than the inner diameter of the box mouth of the urea box, a plurality of exhaust holes are formed through the box mouth retaining ring, the edge of the box mouth retaining ring is provided with two opposite clamping strips arranged along the length direction of the injection pipe, each clamping strip is provided with a paddle at one end facing the main pipe body, and a hook is provided on the inner side of the free end of each injection pipe, and the paddle can cause the box mouth retaining ring to undergo elastic deformation to drive the hook to move.
[0006] By adopting the above technical solution, when in use, first connect the connecting sleeve to the bottle mouth of the urea barrel, and then insert the injection tube into the urea box. When pouring, lift the urea barrel manually to pour the urea solution. The urea in the urea barrel decreases and generates negative pressure to drive the one-way valve to open, so that air enters the urea barrel to supplement the air pressure. After urea is injected into the urea box, the urea solution increases and squeezes the internal air out through the exhaust hole, so that the air pressure in the urea box and the urea barrel can be balanced, and the urea can be poured quickly and smoothly.
[0007] The utility model is further configured that the inner side of the connecting sleeve is provided with an internal thread which is threadedly connected with the bottle mouth of the urea barrel.
[0008] The utility model is further configured such that the one-way valve comprises a valve tube and a plurality of elastic leaflets which are circumferentially arranged in the valve tube and face the inner side of the breathing tube.
[0009] The utility model is further configured that the main pipe body position can compress the folded corrugated pipe.
[0010] The utility model is further configured that a limiting ring equal to the inner diameter of the urea tank port is arranged on the tank port retaining ring in a direction away from the main pipe body, and each exhaust hole is arranged inside the limiting ring.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] First, when the utility model is filling urea, air can be continuously added to the urea barrel through the one-way valve. After the urea solution in the urea barrel increases, the air can be quickly discharged through the exhaust hole, so that the air pressure in the urea box and the urea barrel can be balanced, and the urea can be dumped quickly and smoothly, effectively reducing the physical exertion of the operator;
[0013] Secondly, when the utility model is filling urea, the box opening of the urea box can be hooked by the hook on the clamping strip, and the connection is firm, so as to prevent the filling pipe from coming out during use and causing the urea solution to spill out. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 Mainly used to show the internal threads in the connecting sleeve;
[0016] Figure 3 Mainly used to show the exhaust holes in the limit ring.
[0017] Among them, 1. connecting sleeve; 2. internal thread; 3. breathing tube; 4. valve tube; 5. elastic leaflet; 6. main pipe body; 7. injection pipe; 8. box mouth retaining ring; 9. exhaust hole; 10. limit ring; 11. clamping strip; 12. paddle; 13. hook. DETAILED DESCRIPTION
[0018] The following is a further detailed description of a urea filling pipe proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiment of the utility model. The same or similar reference numerals in the accompanying drawings represent the same or similar components.
[0019] Example, see Figure 1-3 A urea filling pipe comprises a connecting sleeve 1 which is detachably connected to the bottle mouth of a urea barrel, an inner side of the connecting sleeve 1 is provided with an internal thread 2 which is threadedly connected to the bottle mouth of the urea barrel, one end of the connecting sleeve 1 is connected with a breathing tube 3, one side of the breathing tube 3 is provided with a one-way valve, the one-way valve comprises a valve tube 4, four elastic leaflets 5 which are circumferentially arranged in the valve tube 4 and face the inner side of the breathing tube 3, the one-way valve is connected toward the inner side of the breathing tube 3, one end of the breathing tube 3 away from the connecting sleeve 1 is connected with a main pipe body 6, and the main pipe body 6 is a compressible and foldable corrugated pipe, so that it can be compressed and folded to be shorter, which is convenient for storage and carrying.
[0020] The free end of the main pipe body 6 is connected to an injection pipe 7. A box mouth retaining ring 8 is arranged on the outer periphery of the injection pipe 7 near one end of the main pipe body 6. The outer diameter of the box mouth retaining ring 8 is larger than the inner diameter of the box mouth of the urea box. Six circumferentially distributed exhaust holes 9 are opened through the box mouth retaining ring 8. A circle of limiting rings 10 with a diameter equal to the inner diameter of the box mouth of the urea box is arranged on the box mouth retaining ring 8 away from the main pipe body 6, and each exhaust hole 9 is arranged inside the limiting ring 10. The edge of the box mouth retaining ring 8 is provided with two opposite clamping strips 11 arranged along the length direction of the injection pipe 7. Each clamping strip 11 is provided with a paddle 12 at one end facing the main pipe body 6. A hook 13 is provided on the inner side of the free end of each injection pipe 7. The hook 13 can hook the convex ring on the outer side of the box mouth of the urea box to prevent it from falling off. The box mouth retaining ring 8 can be elastically deformed by plucking the two paddles 12 inwardly, so that the hook 13 is driven to move outward to remove the filling pipe from the box mouth of the urea box.
[0021] Usage: When in use, first connect the connecting sleeve 1 to the bottle mouth of the urea barrel, then insert the injection tube 7 into the urea box, so that the limit ring 10 is just inserted into the box mouth. During the insertion process, the hook 13 hooks the convex ring on the outer side of the box mouth of the urea box;
[0022] During pouring, the urea barrel is manually lifted to pour the urea solution. The urea in the urea barrel is reduced to generate negative pressure, which drives the one-way valve to open, allowing air to enter the urea barrel to supplement the air pressure. After urea is injected into the urea tank, the urea solution increases and squeezes the internal air out through the exhaust hole 9, so that the air pressure in the urea tank and the urea barrel can be balanced, and the urea can be poured quickly and smoothly.
[0023] 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 or similar parts between the various embodiments can be referenced to each other.
[0024] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. A urea filling pipe, comprising a connecting sleeve (1) detachably connected to the bottle mouth of a urea barrel, characterized in that: One end of the connecting sleeve (1) is connected to a breathing tube (3), one side of the breathing tube (3) is provided with a one-way valve, the one-way valve is connected toward the inner side of the breathing tube (3), the end of the breathing tube (3) away from the connecting sleeve (1) is connected to a main pipe body (6), the free end of the main pipe body (6) is connected to an injection pipe (7), the outer periphery of the injection pipe (7) close to the end of the main pipe body (6) is provided with a box mouth retaining ring (8), the outer diameter of the box mouth retaining ring (8) is larger than the outer diameter of the urea box The inner diameter of the box mouth retaining ring (8) is formed by penetrating the box mouth retaining ring (8) to form a plurality of exhaust holes (9). The edge of the box mouth retaining ring (8) is provided with two clamping strips (11) which are opposite to each other and arranged along the length direction of the injection pipe (7). Each clamping strip (11) is provided with a paddle (12) at one end facing the main pipe body (6). A hook (13) is provided on the inner side of the free end of each injection pipe (7). When the paddle (12) is moved, the box mouth retaining ring (8) can be elastically deformed, thereby driving the hook (13) to move.
2. A urea filling pipe according to claim 1, characterized in that: The inner side of the connecting sleeve (1) is provided with an internal thread (2) which is threadedly connected to the bottle mouth of the urea barrel.
3. A urea filling pipe according to claim 1, characterized in that: The one-way valve comprises a valve tube (4) and a plurality of elastic leaflets (5) which are circumferentially arranged in the valve tube (4) and face the inner side of the breathing tube (3).
4. A urea filling pipe according to claim 1, characterized in that: The main pipe body (6) is a corrugated pipe that can be compressed and folded.
5. The urea filling pipe according to claim 1, characterized in that: The tank opening retaining ring (8) is provided with a limiting ring (10) having an inner diameter equal to the tank opening of the urea tank in a direction away from the main pipe body (6), and each exhaust hole (9) is arranged inside the limiting ring (10).