A dustproof mechanism for urea tank interface

Abstract

This utility model belongs to the field of automotive parts technology and relates to a dustproof mechanism for a urea tank interface. It includes a tank cover with a mounting base inside, and a positioning buckle between the mounting base and the inner side of the tank cover. An installation assembly is located between the mounting base and the tank cover, and the installation assembly also includes a sealing mechanism for sealing. This utility model, through the cooperation of an annular groove, a sealing gasket, a sealing sleeve, and the positioning buckle, enables the sealing sleeve to be inserted into the urea tank interface. The sealing sleeve's inner wall compresses and seals the interface, and the sealing gasket contacts the end face of the interface, achieving a multiple sealing effect. This effectively solves the problem of easy leakage of liquid from the urea tank through gaps.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a dustproof mechanism for a urea tank interface. Background Technology

[0002] In diesel vehicle exhaust treatment systems, the urea tank is a key component for storing urea solution. The urea solution reacts with nitrogen oxides in the exhaust gas, which can effectively reduce pollutant emissions and meet environmental regulations.

[0003] As a key connection point for the filling and storage of urea solution, the urea tank interface directly affects the purity of the urea solution and the stability of the pressure inside the tank. In the existing technology, the automotive urea tank interface is usually protected by a dust cover. Theoretically, this dust cover has the dual function of preventing external dust and impurities from entering the tank and sealing the tank opening to prevent urea solution from leaking out.

[0004] However, some existing dust covers have obvious defects in actual use. Due to the unreasonable design of the fit between the dust cover and the interface, there is a gap between the dust cover and the inner wall of the interface. Therefore, under long-term use or when subjected to external forces such as vibration and bumps during vehicle operation, the dust cover is prone to loosening. Not only can it not effectively prevent dust and other impurities from entering, but more seriously, with the continuous bumps of the vehicle, the liquid in the urea tank can easily leak out through this gap. The leakage of urea solution not only wastes resources, but may also corrode vehicle parts, affect the normal operation of the vehicle's exhaust gas treatment system, and is not conducive to practical application. Utility Model Content

[0005] The technical problem this utility model aims to solve is that there is a gap between the dust cover and the inner wall of the interface. Therefore, when the dust cover is used for a long time or subjected to external forces such as vibration and bumps during vehicle operation, it is easy for the dust cover to loosen. Not only can it not effectively prevent dust and other impurities from entering, but more seriously, with the continuous bumps of the vehicle, the liquid in the urea tank is very likely to leak out through the gap.

[0006] The present invention relates to a dustproof mechanism for a urea tank interface, comprising a tank cover, an inner side of which is provided with a mounting base, and a positioning buckle between the mounting base and the inner side of the tank cover.

[0007] The mounting assembly is located between the mounting base and the cover, and also includes a sealing mechanism for sealing. The mounting assembly includes positioning holes, threaded holes, and screws. Positioning holes are symmetrically provided on opposite sides of the mounting base and the positioning buckle. Threaded holes are symmetrically provided on the inner side of the cover opposite to the positioning buckle. Screws are provided inside the two positioning holes on the positioning buckle and the mounting base, with one end of each screw extending into the threaded hole. The sealing mechanism includes a connecting ring, an annular groove, a sealing gasket, a sealing sleeve, and a sealing ring. An annular groove is provided on the inner side of the cover opposite to the mounting base, and a sealing gasket is provided inside the annular groove. A connecting ring is provided on the outer side of the mounting base away from the cover, and a sealing sleeve is fitted between the connecting ring and one side of the mounting base.

[0008] Preferably, the box cover has evenly distributed weight-reducing grooves on the side near the mounting base, and the inner wall of the weight-reducing grooves away from the mounting base has hanging holes. A hanging rope is installed inside the hanging holes, and a bolt is provided at the end of the hanging rope away from the box cover.

[0009] Furthermore, the outer side of the box cover is provided with evenly distributed anti-slip grooves, which are arranged in an inwardly concave arc shape.

[0010] Furthermore, the sealing sleeve has a circular opening at the end away from the box cover.

[0011] Furthermore, a uniformly distributed sealing ring is fixedly connected to the outer side of the sealing sleeve away from the mounting base.

[0012] Furthermore, both the lid and the positioning buckle are made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By cooperating with the annular groove, sealing gasket, sealing sleeve, and positioning buckle, the sealing sleeve can be inserted into the interface of the urea tank. The sealing sleeve is squeezed and sealed by the inner wall of the interface, and the sealing gasket contacts the end face of the interface, achieving a multiple sealing effect. This effectively solves the problem that the liquid in the urea tank can easily leak out through gaps. Attached Figure Description

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

[0016] Figure 2 This utility model Figure 1 A schematic diagram of the left-side cross-section structure;

[0017] Figure 3 This utility model Figure 1 A top-view cross-sectional structural diagram;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the box cover in this utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the mounting base in this utility model;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the sealing sleeve in this utility model;

[0021] Figure 7 This utility model Figure 1 A schematic diagram of the rear view structure.

[0022] In the diagram: 1. Box cover; 2. Mounting base; 3. Positioning buckle; 4. Positioning hole; 5. Connecting ring; 6. Threaded hole; 7. Screw; 8. Annular groove; 9. Sealing gasket; 10. Sealing sleeve; 11. Sealing ring; 12. Weight reduction groove; 13. Anti-slip groove; 14. Bolt; 15. Hanging hole; 16. Hanging rope. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] like Figures 1 to 7As shown, the device includes a lid 1, an inner mounting base 2, and a positioning buckle 3 between the mounting base 2 and the inner side of the lid 1; a mounting assembly located between the mounting base 2 and the lid 1, which also includes a sealing mechanism for sealing. Both the lid 1 and the positioning buckle 3 are made of stainless steel. The mounting assembly includes positioning holes 4, threaded holes 6, and screws 7. Positioning holes 4 are symmetrically provided on opposite sides of the mounting base 2 and the positioning buckle 3. Threaded holes 6 are symmetrically provided on the inner sides of the lid 1 opposite to the positioning buckle 3. The positioning buckle 3 and the mounting base 2... Screws 7 are provided inside the two positioning holes 4. One end of the screws 7 extends into the threaded hole 6. The sealing mechanism includes a connecting ring 5, an annular groove 8, a sealing gasket 9, a sealing sleeve 10, and a sealing ring 11. An annular groove 8 is provided on the inner side of the box cover 1 opposite to the mounting base 2. A sealing gasket 9 is provided inside the annular groove 8. A connecting ring 5 is provided on the outer side of the mounting base 2 away from the box cover 1. A sealing sleeve 10 is fitted between the connecting ring 5 and one side of the mounting base 2. A uniformly distributed sealing ring 11 is fixedly connected to the outer side of the sealing sleeve 10 away from the mounting base 2.

[0027] In this technical solution, both the lid 1 and the positioning buckle 3 are made of stainless steel. Stainless steel has high mechanical strength, good toughness and is not easily deformed or broken, and it also has the advantages of corrosion resistance.

[0028] In this technical solution, both the sealing gasket 9 and the sealing sleeve 10 are made of rubber, specifically EPDM rubber, which has good resistance to weak alkalis and aging. It has excellent resistance to weak alkalis (such as urea solution), water and water vapor, and is not prone to swelling, hardening or cracking after long-term contact, making it more stable in use.

[0029] The tank cover 1 has evenly distributed weight-reducing grooves 12 on the side near the mounting base 2. The inner wall of the weight-reducing grooves 12 away from the mounting base 2 has hanging holes 15. A hanging rope 16 is installed inside the hanging holes 15. A bolt 14 is provided at the end of the hanging rope 16 away from the tank cover 1. When in use, the bolt 14 can be installed at the edge of the urea tank interface. This way, when adding urea solution, there is no need to worry about where the tank cover 1 is placed, and the phenomenon of the tank cover 1 being lost is also avoided.

[0030] In addition, the outer side of the lid 1 is provided with evenly distributed anti-slip grooves 13. The anti-slip grooves 13 are set in an inward arc shape. When it is necessary to twist the lid 1, a certain amount of force is required. The anti-slip grooves 13 make it easier to twist the lid 1, thus playing the role of anti-slip and leveraging force.

[0031] The sealing sleeve 10 has a circular opening at the end away from the tank cover 1. When the sealing sleeve 10 is inserted into the urea tank interface, it will be squeezed. The circular opening allows the sealing sleeve 10 to contract and deform inward, making it easier to insert the sealing sleeve 10 into the urea tank interface.

[0032] Working Principle: When using this technical solution, first, hold the lid 1 and insert the sealing sleeve 10 into the urea tank interface. The sealing sleeve 10 makes tight contact with the inner wall of the interface, achieving a preliminary sealing effect. Then, press the lid 1 to move the sealing sleeve 10 and the mounting base 2 into the interface. At this time, the sealing gasket 9 abuts against the outer end face of the urea tank interface, causing the positioning buckle 3 to engage in the slot of the urea tank interface. Then, rotate the lid 1 and use the positioning buckle 3 to lock the lid 1 into the slot on the urea tank interface. Through the tight contact between the sealing sleeve 10 and the inner wall of the urea tank interface and the engagement of the positioning buckle 3, the lid 1 will not shake during use. Furthermore, the two seals of the sealing sleeve 10 and the sealing gasket 9 effectively solve the problem of liquid leakage in the urea tank.

[0033] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A dustproof mechanism for a urea tank interface, comprising a tank cover (1), characterized in that: An mounting base (2) is provided on the inner side of the box cover (1), and a positioning buckle (3) is provided between the mounting base (2) and the inner side of the box cover (1). The mounting assembly is located between the mounting base (2) and the cover (1), and the mounting assembly also includes a sealing mechanism for sealing; The mounting assembly includes positioning holes (4), threaded holes (6), and screws (7). Positioning holes (4) are symmetrically provided on opposite sides of the mounting base (2) and the positioning buckle (3). Threaded holes (6) are symmetrically provided on the inner side of the cover (1) opposite to the positioning buckle (3). Screws (7) are provided on the inner side of the two positioning holes (4) on the positioning buckle (3) and the mounting base (2). One end of the screw (7) extends into the threaded hole (6). The sealing mechanism includes a connecting ring (5), an annular groove (8), a sealing gasket (9), a sealing sleeve (10), and a sealing ring (11). An annular groove (8) is provided on the inner side of the cover (1) opposite to the mounting base (2). A sealing gasket (9) is provided on the inner side of the annular groove (8). A connecting ring (5) is provided on the outer side of the mounting base (2) away from the cover (1). A sealing sleeve (10) is fitted between the connecting ring (5) and one side of the mounting base (2).

2. The dustproof mechanism for a urea tank interface according to claim 1, characterized in that: The box cover (1) has a uniformly distributed weight-reducing groove (12) on the side near the mounting base (2). The inner wall of the weight-reducing groove (12) away from the mounting base (2) has a hanging hole (15). A hanging rope (16) is installed inside the hanging hole (15). A bolt (14) is provided at the end of the hanging rope (16) away from the box cover (1).

3. The dustproof mechanism for a urea tank interface according to claim 1, characterized in that: The outer side of the box cover (1) is provided with uniformly distributed anti-slip grooves (13), which are arranged in an inwardly concave arc shape.

4. The dustproof mechanism for a urea tank interface according to claim 1, characterized in that: The sealing sleeve (10) has a circular opening at the end away from the box cover (1).

5. A dustproof mechanism for a urea tank interface according to claim 1, characterized in that: The sealing sleeve (10) is fixedly connected with a uniformly distributed sealing ring (11) on the outside away from the mounting base (2).

6. The dustproof mechanism for a urea tank interface according to claim 1, characterized in that: The lid (1) and the positioning buckle (3) are both made of stainless steel.

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