Urea box

Abstract

The utility model provides a urea box which comprises a box body, a filling pipe and a rotating shaft, and further comprises the following components: a rotating shaft which is horizontally fixed at the inner side of the box body; the sleeve rod sleeves the outer side of the rotating shaft and is rotationally connected with the rotating shaft; the floating plate is fixed to the sleeve rod and arranged on the side close to the filling pipe, a clamping groove is formed in the top side of the floating plate, and the clamping groove is matched with the lower end face of the filling pipe and used for sealing the filling pipe when the filling pipe is used for filling the urea solution; the transverse partition plates are evenly fixed to the sleeve rod and arranged on the side, away from the floating plate, of the sleeve rod. According to the urea box, the floating plate is arranged, and the floating plate is driven by buoyancy to float upwards, rotate clockwise around the rotating shaft and make contact with the lower end face of the filling pipe, so that the clamping groove is attached to the lower end face of the filling pipe in a sealed mode, the filling pipe is prevented from continuously injecting urea into the box body, and urea is prevented from being crystallized and expanded to damage the urea box.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a urea box. Background Art

[0002] Urea tank is a urea storage tank, also known as urea box, which contains urea solution. In order to reduce the emission of harmful gas NOx in engine exhaust, SCR (selective reduction) exhaust treatment technology is widely used internationally. The principle of SCR exhaust treatment is to use urea aqueous solution to react with nitrogen oxides NOx to generate pollution-free nitrogen N2 and water H2O.

[0003] In the prior art, urea liquid needs to be added to the urea tank. Since the density of urea liquid decreases and the volume increases after freezing, it is not allowed to fill up the tank during the filling process. Once the tank is filled up, the expansion of the frozen urea volume will cause the urea tank to swell and explode, which is very likely to happen in winter.

[0004] Prior art, Patent No. 202120348987.1 discloses a urea tank, wherein a filling pipe is fixedly sleeved on the top of the inner wall of the tank, a limiting frame is plastically welded to the bottom end of the filling pipe, two symmetrically distributed slide grooves are provided on the inner wall of the limiting frame, a pulley is slidingly sleeved in the slide groove, a limiting rod is rotatably sleeved on the inner wall of the pulley, and a floating block is plastically welded between the two limiting rods; the floating block will rise and fall with the urea liquid level in the tank, and when a large amount of urea is added, the floating block will block the bottom end of the filling pipe under the limiting action of the limiting frame, the slide groove and the pulley, causing the urea in the filling pipe to overflow in the opposite direction.

[0005] In the above technology, the pulley is installed in the chute, but when adding urea solution into the urea tank, impurities may accidentally enter the chute, or scale may accumulate in the chute after long-term use, thereby affecting the work of the pulley and making it impossible for the floating block to float normally.

[0006] In view of the above problems, the present application proposes a urea tank. Utility Model Content

[0007] In view of the above problems, the utility model provides a urea tank.

[0008] A urea box comprises a box body and a filling pipe, wherein the urea box further comprises: a rotating shaft horizontally fixed inside the box body; a sleeve rod sleeved outside the rotating shaft and rotatably connected with the rotating shaft; a floating plate fixed on the sleeve rod and arranged on a side close to the filling pipe, and a clamping groove is arranged on the top side of the floating plate, the clamping groove is matched with the lower end surface of the filling pipe, and is used for sealing the filling pipe when the filling pipe is filled with urea solution; and a plurality of transverse partitions are evenly fixed on the sleeve rod and arranged on a side away from the floating plate.

[0009] In a preferred embodiment, the urea tank further comprises: a plurality of longitudinal partitions fixed on the transverse partitions, and any longitudinal partition is arranged perpendicular to the transverse partition.

[0010] In a preferred embodiment, the urea tank further comprises: a limit bar, which is horizontally fixed inside the tank body and fixed to the bottom side of the rotating shaft, and has an upper inclined surface with an inclination angle of 30-60° to the horizontal.

[0011] In a preferred embodiment, the urea tank further comprises: a floating block fixed on the bottom side of the floating plate, and used to provide buoyancy for the floating block when the urea solution is added to the filling pipe.

[0012] In a preferred embodiment, the urea tank further comprises: a counterweight block fixed on the top side of the floating plate, and used for the floating plate to contact the limiting strip when the urea solution does not contact the floating plate.

[0013] In a preferred embodiment, the urea tank further comprises: a liquid level sensor, which is arranged inside the tank body and is used to monitor the urea liquid level in the tank body.

[0014] In a preferred embodiment, the urea tank further comprises: a ventilation pipe, which is assembled on the top side of the tank body.

[0015] 1. The urea tank of the present application is provided with a floating plate, which is driven to float up by buoyancy and rotates clockwise around the rotating shaft to contact the lower end surface of the filling pipe, so that the card slot is sealed and fitted with the lower end surface of the filling pipe to block the filling pipe from continuing to inject urea into the tank body, thereby preventing urea crystal expansion and damaging the urea tank. At the same time, it solves the problem of impurities accidentally entering the chute in the prior art, or scale accumulation in the chute after long-term use, thereby affecting the work of the pulley and making it impossible for the floating block to float up normally.

[0016] 2. The urea tank of the present application reduces the shaking amplitude of the urea solution and the amount of bubbles generated by adding a partition, thereby ensuring the accuracy of the sensor measurement in the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other characteristics, features and advantages of the present invention will become clear by reading the following description of the exemplary embodiments with reference to the accompanying drawings. The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Structural diagram of the urea tank of the utility model;

[0019] Figure 2A sectional view of the urea tank state 1 of the utility model;

[0020] Figure 3 A sectional view of the urea tank state 2 of the utility model;

[0021] Figure 4 The structure diagram of the floating plate of the urea tank of the utility model;

[0022] Figure 5 A top view of a floating plate and a partition plate of a urea tank of the utility model.

[0023] In the figure: 10, box body; 11, filling pipe; 20, rotating shaft; 21, sleeve rod; 30, floating plate; 31, slot; 40, transverse partition; 41, longitudinal partition; 22, limit strip; 33, floating block; 34, counterweight block; 50, liquid level sensor; 51, ventilation pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0025] The urea tank is described in detail below in conjunction with the accompanying drawings and embodiments. Example

[0026] A urea tank comprises a tank body 10 and a filling pipe 11. The urea tank further comprises: a rotating shaft 20, which is horizontally fixed inside the tank body 10; a sleeve rod 21, which is sleeved outside the rotating shaft 20 and is rotatably connected to the rotating shaft 20; a floating plate 30, which is fixed on the sleeve rod 21 and is arranged on a side close to the filling pipe 11, and a clamping groove 31 is arranged on the top side of the floating plate 30, and the clamping groove 31 is matched with the lower end surface of the filling pipe 11, and is used for sealing the filling pipe 11 when the filling pipe 11 is filled with urea solution; and a plurality of transverse partitions 40, which are evenly fixed on the sleeve rod 21 and are arranged on a side away from the floating plate 30.

[0027] During operation, when urea solution is added to the urea tank, as the amount of solution in the tank body 10 increases, the urea solution contacts the float plate 30, and the float plate 30 is driven to float up by the buoyancy, and rotates clockwise around the rotating shaft 20, and contacts the lower end surface of the filling pipe 11, so that the card slot 31 is sealed and fitted with the lower end surface of the filling pipe 11, so as to prevent the filling pipe 11 from continuing to inject urea into the tank body 10, thereby preventing urea crystals from expanding and damaging the urea tank.

[0028] Among them, by adding a transverse partition 40, the solution on the top side of the box body 10 is divided into multiple independent small spaces. Even if the urea solution freezes, the height of the convex bulge generated by the ice in each independent small space will be smaller than the height of a single convex bulge, so that the top bag of the urea tank will not be deformed.

[0029] By adding the transverse partition 40 , the shaking amplitude of the urea solution on the inner side of the box 10 is reduced, thereby reducing the amount of bubble generation, avoiding the influence of bubbles on the accuracy of the sensor, and ensuring the accuracy of the sensor measurement in the box 10 .

[0030] The urea tank further includes: a liquid level sensor 50 , which is arranged inside the tank body 10 and is used to monitor the urea liquid level in the tank body 10 .

[0031] The urea tank further includes a ventilation pipe 51 which is assembled on the top side of the tank body 10 . Example

[0032] Embodiment 2 is an improvement on Embodiment 1. Specifically, the improvement includes that the urea tank further includes: a plurality of longitudinal partitions 41 fixed on the transverse partition 40 , and any longitudinal partition 41 is arranged perpendicular to the transverse partition 40 .

[0033] Specifically, by adding the longitudinal partition 41, the solution on the top side of the tank body 10 is further divided into a plurality of independent small spaces. Even if the urea solution freezes, the height of the convex bulge generated by the ice in each independent small space will be smaller than the height of a single convex bulge, thereby preventing the top bag of the urea tank from being deformed.

[0034] By adding the longitudinal partition 41 , the lateral shaking amplitude of the urea solution is reduced, the amount of bubble generation is reduced, and the accuracy of the sensor measurement in the box 10 is ensured. Example

[0035] Embodiment 3 is an improvement on Embodiment 1, and the improvement specifically includes that the urea tank further includes: a limit bar 22, which is horizontally fixed to the inner side of the tank body 10 and fixed to the bottom side of the rotating shaft 20, and has an upper inclined surface with an inclination angle of 30-60° to the horizontal.

[0036] By adding the limiting strip 22 , when the urea solution in the box 10 is lower than a certain liquid level, the floating plate 30 rotates counterclockwise around the rotating shaft 20 to the position of the limiting strip 22 and is limited and fixed by the limiting strip 22 . Example

[0037] Embodiment 4 is an improvement on Embodiment 3. Specifically, the improvement includes that the urea tank further includes: a floating block 33 fixed to the bottom side of the floating plate 30 and used to provide buoyancy for the floating block 33 when the filling pipe 11 is filled with urea solution.

[0038] By providing the floating block 33, when the urea tank 10 is filled with urea solution, the buoyancy of the floating block 33 and the floating plate 30 as a whole increases, so that the buoyancy of the floating block 33 and the floating plate 30 as a whole is greater than the gravity of the partition, the floating block 33 floats up, and the card slot 31 is sealed and fitted with the lower end surface of the filling pipe 11, blocking the filling pipe 11 from continuing to inject urea into the tank 10, thereby preventing urea crystals from expanding and damaging the urea tank. Example

[0039] Embodiment 5 is an improvement on Embodiment 1. Specifically, the improvement includes that the urea tank further includes: a counterweight block 34 fixed on the top side of the floating plate 30 , so that the urea solution does not contact the floating block 33 and the floating plate 30 contacts the limit strip 22 .

[0040] By providing the counterweight 34, the overall gravity of the floating plate 30 and the counterweight 34 is increased, so that when the urea solution in the box body 10 is lower than a certain liquid level, the overall gravity of the floating plate 30 and the counterweight 34 is greater than the gravity of the partition, the floating block 33 rotates counterclockwise around the rotating shaft 20, the floating plate 30 contacts the limit bar 22, and the filling pipe 11 is opened.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the article or device including the elements.

[0042] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. The utility model is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, and all should be included in the scope of the claims of the utility model.

Claims

1. A urea tank, comprising a tank body (10) and a filling pipe (11), characterized in that: The urea tank also includes: A rotating shaft (20) is horizontally fixed inside the box (10); A sleeve rod (21), sleeved on the outside of the rotating shaft (20) and rotatably connected to the rotating shaft (20); A floating plate (30) is fixed on the sleeve rod (21) and is arranged on a side close to the filling pipe (11), and a clamping groove (31) is arranged on the top side of the floating plate (30), the clamping groove (31) is matched with the lower end surface of the filling pipe (11), and is used for sealing the filling pipe (11) when the filling pipe (11) is filled with urea solution. A plurality of transverse partition plates (40) are evenly fixed on the sleeve rod (21) and are arranged on a side away from the floating plate (30).

2. The urea tank according to claim 1, characterized in that: The urea tank also includes: A plurality of longitudinal partitions (41) are fixed on the transverse partition (40), and any of the longitudinal partitions (41) is arranged perpendicular to the transverse partition (40).

3. The urea tank according to claim 1, characterized in that: The urea tank also includes: The limit bar (22) is horizontally fixed inside the box body (10) and fixed to the bottom side of the rotating shaft (20), and has an upper inclined surface with an inclination angle of 30-60° to the horizontal.

4. The urea tank according to claim 3, characterized in that: The urea tank also includes: The floating block (33) is fixed to the bottom side of the floating plate (30) and is used to provide buoyancy for the floating block (33) when the filling pipe (11) is filled with urea solution.

5. The urea tank according to claim 3, characterized in that: The urea tank also includes: A counterweight block (34) is fixed on the top side of the floating plate (30) and is used for the floating plate (30) to contact the limiting strip (22) when the urea solution does not contact the floating plate (30).

6. The urea tank according to claim 1, characterized in that: The urea tank also includes: A liquid level sensor (50) is arranged inside the box (10) and is used to monitor the urea liquid level in the box (10).

7. The urea tank according to claim 1, characterized in that: The urea tank also includes: A ventilation pipe (51) is mounted on the top side of the box body (10).

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