Urea box assembly applied to vehicle

Abstract

The utility model belongs to the technical field of urea boxes for vehicles, and provides a urea box assembly applied to a vehicle, which mainly comprises a urea box body with an accommodating cavity; the fixed support is provided with a mounting position, and a protective cover is arranged on the mounting position of the fixed support; the vent plug is detachably arranged in the protective cover of the fixing support, the vent plug is provided with an air outlet, the air outlet is communicated with the containing cavity of the urea box body, and the vent plug has a preset height relative to the urea box body. By the adoption of the structural design, it can be guaranteed that a urea solution cannot flow back into the vent plug, meanwhile, the protective cover can protect dust and other impurities from falling into the vent plug, the vent plug is prevented from being blocked, and the service life of the urea box is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive urea tank technology, and more particularly to a urea tank assembly used in vehicles. Background Technology

[0002] The urea tank is a core component of the SCR (Selective Catalytic Reduction) system in diesel vehicles. The urea solution stored inside is used to purify nitrogen oxides (NOx) in the exhaust gas. Specifically, the urea injection system injects urea solution, which reacts chemically with NOx in the exhaust gas, converting it into nitrogen, water, and trace amounts of carbon dioxide, thereby reducing NOx emissions. The vent plug is a critical component of the urea tank, ensuring pressure balance inside and outside the tank while preventing solution leakage. When vehicles operate in dusty environments, dust is continuously drawn in through the vent plug. Accumulated dust can clog the vent plug. Clogged vent plugs hinder ventilation between the urea tank and the outside environment. As urea is consumed, negative pressure forms inside the tank, increasing the load on the urea pump during pressure build-up and shortening its lifespan. Severe blockage can lead to pump failure or tank collapse. Furthermore, in existing technologies, urea solution from the tank can easily enter the ventilation system, causing blockages. Utility Model Content

[0003] This invention provides a urea tank assembly for vehicles, which solves the problem of vent plug blockage in the above-mentioned background technology. At the same time, it ensures the air pressure balance in the urea tank, prevents urea solution from entering the vent module, and extends the service life of the urea tank and the vent module.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A urea tank assembly for use in vehicles, comprising:

[0006] The urea tank body has a receiving cavity;

[0007] A fixed bracket is provided with a mounting position, and a protective cover is provided at the mounting position of the fixed bracket;

[0008] A vent plug is detachably installed inside the protective cover of the fixed bracket. The vent plug has an air outlet that communicates with the receiving cavity of the urea tank body. The vent plug has a preset height relative to the urea tank body.

[0009] In some embodiments, a first mounting plate is also provided, which is detachably connected to the vent plug, and the vent plug is detachably disposed inside the protective cover of the fixed bracket via the first mounting plate.

[0010] In some embodiments, the fixing bracket is provided with a first fixing hole, and the first mounting plate is provided with a second fixing hole, wherein the number of the first fixing hole and the second fixing hole are matched and their positions correspond.

[0011] In some embodiments, the vent plug is at a preset height of not less than 400 mm relative to the urea tank body.

[0012] In some embodiments, a first connecting pipe is also included, one end of which is connected to the air outlet of the vent plug, and the other end of which is connected to the urea tank body.

[0013] In some embodiments, the first connecting pipe is provided with a first conduit, which communicates with the urea tank's receiving cavity through the first connecting pipe. One end of the first conduit is provided with a first vent, the height of which is lower than the height of the vent plug.

[0014] In some embodiments, the lower end of the protective cover has a first opening, through which the vent plug can be installed inside the protective cover.

[0015] In some embodiments, the fixed bracket includes a first bracket and a second bracket, the protective cover is disposed on the second bracket, the first bracket is perpendicular to the second bracket, a reinforcing rib is provided between the first bracket and the second bracket, and the reinforcing rib, the first bracket and the second bracket form a triangular structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This application prevents dust and other impurities from entering the vent plug and causing blockage by installing the vent plug inside the protective cover of the fixed bracket. At the same time, setting a preset height difference between the vent plug and the urea tank body can prevent urea solution from flowing back into the vent plug, ensuring the stability of the working environment of the vent plug and thus improving the service life of the urea tank body.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0019] Figure 1 This is a perspective view of a urea tank assembly for use in a vehicle according to the present invention;

[0020] Figure 2 This is an exploded view of the vent plug and fixing bracket of this utility model;

[0021] Figure 3This is a three-dimensional schematic diagram of the breathable plug of this utility model installed inside the protective cover. Detailed Implementation

[0022] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the embodiments, unless otherwise stated, the terms "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the present application must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0023] like Figure 1-3 As shown, this utility model provides a urea tank assembly for vehicles, mainly including a urea tank body 100, a fixing bracket 200, and a vent plug 206. Specifically, the urea tank body 100 has a receiving cavity for storing urea solution. The fixing bracket 200 has a mounting position, and a protective cover 203 is provided at the mounting position. In this embodiment, the protective cover 203 and the mounting bracket 200 are integrally set, simplifying the assembly process. The vent plug 206 is detachably set inside the protective cover 203. The 06 is provided with an air outlet 2061, which is connected to the receiving cavity of the urea tank body 100. It should be noted that the vent plug 206 is provided with a preset height of 400 relative to the urea tank body 100. That is, the installation position of the fixed bracket 200 is higher than the installation position of the urea tank body 100 by a certain distance, so as to ensure that the urea solution in the urea tank body 100 will not flow back into the vent plug 206. In this embodiment, in order to ensure this effect, the preset height 400 is not less than 400mm.

[0024] In this embodiment, a protective cover 203 is provided to cover and protect the vent plug 206, preventing dust and other impurities from being drawn into the vent plug 206 and causing blockage. This ensures normal air pressure within the urea tank body 100, preventing increased load on the urea pump during pressure build-up and thus guaranteeing the pump's service life. Severe blockage can lead to urea pump pressure build-up failure or the urea tank body 100 collapsing; the protective cover 203 prevents these problems from occurring.

[0025] In one embodiment, a first mounting plate 205 is provided to facilitate the installation between the vent plug 206 and the fixing bracket 200. The first mounting plate 205 is detachably connected to the vent plug 206 and the fixing bracket 200.

[0026] Specifically, in this embodiment, the first mounting plate 205 is disposed inside the protective cover 206. Two first nuts 2051 are welded and fixed on the first mounting plate 205, thereby forming a first threaded hole on the first mounting plate 205. A second fixing hole is provided on the first mounting plate 205 at a position corresponding to the first threaded hole, thereby ensuring that the locking bolt 2021 can be locked in place. A first fixing hole with a corresponding position is provided on the fixing bracket 200. The number and position of the first fixing holes correspond one-to-one with the number and position of the second fixing holes, thereby ensuring that the locking bolt 2021 can pass through the fixing bracket 200 and be locked with the first nuts 2051. In this embodiment, the vent plug 206 is snapped and fixed to the first mounting plate 205 by a retaining ring. Optionally, it can also be locked and fixed by a self-tapping screw, or a bolt structure can be used for detachable connection, thereby facilitating the replacement of the vent plug 206.

[0027] In one embodiment, a first connecting pipe 300 is further included. One end of the first connecting pipe 300 is connected to the air outlet 2061 of the vent plug 206, and the other end of the first connecting pipe 300 is connected to the urea tank body 100, thereby connecting the vent plug 206 and the receiving cavity of the urea tank body 100. In this embodiment, the first connecting pipe 300 can be a flexible hose or a rigid pipe, and its type is not limited, as long as it achieves the purpose of connecting the urea tank body 100 and the vent plug 206.

[0028] In one embodiment, a first conduit 301 is provided on the first connecting pipe 300. The first conduit 301 communicates with the receiving cavity of the urea tank body 100 through the first connecting pipe 300. A first vent is provided at one end of the first conduit 301, and the height of the first vent is lower than the installation height of the fixed bracket 200. Specifically, the first conduit 301 and the first connecting pipe 300 are provided with a first connection point, which is located close to the urea tank body 100. By providing the first conduit 301, even if the vent plug 206 is blocked and the air pressure inside the urea tank body 100 increases, the urea solution will not flow back to the vent plug 206. At the same time, the first conduit 301 can also prevent the urea tank body 100 from losing pressure and being crushed when the vent plug 206 is blocked, thus ensuring the air pressure balance of the urea tank body 100.

[0029] In one embodiment, such as Figure 3 As shown, the lower end of the protective cover 203 has a first opening, the size of which is larger than the outer diameter of the vent plug 206, so that the vent plug 206 can be installed inside the protective cover 203 through the first opening. In this embodiment, the first opening faces the same direction as gravity, thus ensuring that the vent plug 206 is easy to install while also allowing the protective cover 203 to better cover and protect the vent plug 206, preventing dust and other impurities from falling onto the vent plug 206.

[0030] In one embodiment, such as Figure 2 As shown, the mounting bracket 200 includes a first bracket 201 and a second bracket 202. A protective cover 203 is mounted on the second bracket 202. The first bracket 201 is used for mounting and fixing. Multiple third fixing holes 2011 are provided on the first bracket 201, allowing it to be locked to the vehicle frame with bolts or screws. The first bracket 201 is perpendicular to the second bracket 202. To further enhance the support strength of the mounting bracket 200, a reinforcing rib 204 is provided between the first bracket 201 and the second bracket 202, forming a triangular structure with the reinforcing rib 204, the first bracket 201, and the second bracket 202. By adopting this structure, the installation structure of the vent plug 206 becomes more stable, meeting the requirements of vehicle conditions.

[0031] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model. These improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A urea tank assembly applied to a vehicle, characterized by, The utility model relates to a urea tank body, having containing cavity, fixed support is equipped with installation site, the installation site of fixed support is equipped with protective cover, the vent plug is detachably arranged in the protective cover of fixed support, the vent plug is equipped with gas outlet, the gas outlet communicates with the containing cavity of urea tank body, wherein, the vent plug is equipped with preset height relative to urea tank body. Further provided is a first mounting plate, which is detachably connected with the vent plug, and the vent plug is detachably arranged in the protective cover of the fixed support through the first mounting plate. The fixed support is provided with a first fixing hole, and the first mounting plate is provided with a second fixing hole, the number of the first fixing hole and the second fixing hole matches and the positions correspond. The preset height of the vent plug relative to the urea tank body is not less than 400 mm.

2. The urea tank assembly for a vehicle according to claim 1, wherein Further provided is a first connecting pipe, one end of the first connecting pipe is connected with the gas outlet of the vent plug, and the other end of the first connecting pipe is connected with the urea tank body.

3. The urea tank assembly for a vehicle according to claim 2, wherein The first connecting pipe is provided with a first conduit, the first conduit communicates with the containing cavity of the urea tank through the first connecting pipe, one end of the first conduit is provided with a first exhaust port, and the height of the first exhaust port is lower than the height of the vent plug.

4. The urea tank assembly for a vehicle according to claim 1, wherein The lower end of the protective cover is provided with a first opening, and the vent plug can be installed in the protective cover through the first opening.

5. The urea tank assembly for a vehicle according to claim 1, wherein The fixed support includes a first support and a second support, the protective cover is arranged on the second support, the first support is arranged vertically relative to the second support, a reinforcing rib is arranged between the first support and the second support, and the reinforcing rib, the first support and the second support form a triangular structure.

6. The urea tank assembly for a vehicle according to claim 5, wherein ​ 7. The urea tank assembly for a vehicle according to claim 1, wherein ​ 8. The urea tank assembly for a vehicle according to claim 7, wherein ​

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