CN211568900U - A vehicle urea storage tank - Google Patents

Abstract

A vehicle urea storage tank, comprising a tank body, a transmission pipeline for introducing urea into the tank body is connected to the side wall of the tank body, a temporary liquid storage mechanism is fixedly connected to the inner wall of the tank, and the temporary liquid storage mechanism includes and transmission pipeline. The casing connected by the pipeline has a first through hole on the side wall of the casing away from the transmission pipeline, and the bottom of the casing is provided with a top that uses the liquid level buoyancy in the tank as the driving force to control the sealing state of the first through hole. lift agency. In the utility model, a temporary liquid storage mechanism is added on the side wall of the urea storage tank for vehicles, and a sealing plate driven by buoyancy is arranged at the bottom of the liquid storage mechanism. When the urea solution in the tank reaches a preset height, the sealing plate is buoyant. Under the action of lifting up and passing through the second through hole on the hole wall of the first through hole, the temporary liquid storage mechanism is sealed, thereby preventing the urea solution from continuing to be filled into the tank and avoiding the waste of urea solution. .

Description

A vehicle urea storage tank

technical field

The utility model relates to an automobile exhaust gas treatment technology, in particular to a urea storage tank for automobiles.

Background technique

With the rapid development of the automobile industry, air pollution is becoming more and more serious, and the requirements for automobile emissions that affect this result are also getting higher and higher; usually automobile exhaust adopts SCR technology, that is, selective catalytic reduction technology. After the exhaust gas comes out of the turbine, it enters the exhaust pipe. A urea dose injection device is installed on the exhaust pipe, and the urea aqueous solution is injected into the urea solution. The urea solution and the nitrogen oxides in the exhaust gas undergo a redox reaction to generate nitrogen and water and discharge, and then achieve the exhaust gas. purification effect.

Usually, vehicle urea is purified by industrial urea and then recrystallized by hydrolysis once, and then configured as a standard solution for storage. The overall process is relatively simple and sustainable. In the actual production process, the configured urea solution is usually stored in a larger urea storage tank. Usually, the urea solution in the urea storage tank is usually not completely filled with the storage tank, because in the urea storage tank When the liquid level of the solution is high or overflowing, when the weather environment becomes cold and urea crystallizes, the volume of the urea solution in the storage tank increases due to crystallization, which in turn causes the tank to rupture. Therefore, during the urea filling work, it is necessary to arrange on-duty personnel next to the urea storage tank to continuously monitor the urea storage tank to avoid overflow of the urea solution in the urea storage tank.

Utility model content

The problem to be solved by the present invention is to provide a vehicle urea storage tank for the above-mentioned deficiencies in the prior art to solve the problem that the existing urea storage tank needs to be guarded when storing urea solution.

To achieve the above object, the utility model adopts the following technical scheme:

A vehicle urea storage tank includes a tank body, a transmission pipeline for introducing urea into the tank body is connected to the side wall of the tank body, a temporary liquid storage mechanism is fixedly connected to the inner wall of the tank, and the temporary liquid storage mechanism includes and transmission pipeline. The casing connected by the pipeline has a first through hole on the side wall of the casing away from the transmission pipeline, and the bottom of the casing is provided with a top that uses the liquid level buoyancy in the tank as the driving force to control the sealing state of the first through hole. Lifting mechanism; the jacking mechanism includes a sliding plate slidingly arranged on the side wall of the tank body, a buoyancy cavity that moves up and down with the liquid level in the tank body is connected below the sliding plate, and one end of the sliding plate close to the first through hole is provided with a vertically upward The sealing plate is facing the hole wall of the first through hole, and the hole wall of the first through hole is provided with a second through hole for the sealing plate to pass through.

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

In the utility model, a temporary liquid storage mechanism is added on the side wall of the urea storage tank for vehicles, and a sealing plate driven by buoyancy is arranged at the bottom of the liquid storage mechanism. When the urea solution in the tank reaches a preset height, the sealing plate is buoyant. Under the action of lifting up and passing through the second through hole on the hole wall of the first through hole, the temporary liquid storage mechanism is sealed, thereby preventing the urea solution from continuing to be filled into the tank, avoiding the waste of urea solution .

Other advantages, objects, and features of the present invention will be manifested in part by the description below, and in part will be understood by those skilled in the art from the study and practice of the present invention.

Description of drawings

Fig. 1 is the overall structure schematic diagram in the embodiment of the present utility model;

Fig. 2 is an enlarged view at A in Fig. 1;

FIG. 3 is an enlarged view of B in FIG. 2 .

Reference numerals: 1. Tank body; 2. Transmission pipe; 3. Shell; 4. First through hole; 5. Slide plate; 6. Buoyancy chamber; 7. Sealing plate; Three through holes; 10, sliding rod; 11, spring; 12, fourth through hole; 13, receiving groove; 14, bump; 15, guide rod; 16, fifth through hole; 17, indicator; 18, ventilation cover.

Detailed ways

In order to make the technical means, creative features, achievement goals and functions realized by the present utility model clearer and easier to understand, the present utility model is further elaborated below in conjunction with the accompanying drawings and specific embodiments:

The embodiment of the present utility model proposes a urea storage tank for vehicles. As shown in FIG. 1 , it includes a tank body 1. A transmission pipeline 2 for introducing urea into the tank body 1 is connected to the side wall of the tank body 1. The tank body 1 A temporary liquid storage mechanism is fixed on the inner wall. The temporary liquid storage mechanism includes a casing 3 that communicates with the transmission pipe 2. A first through hole 4 is opened on the side wall of the casing 3 away from the transmission pipe 2. 3. The bottom is provided with a jacking mechanism that uses the liquid level buoyancy in the tank body 1 as a driving force to control the sealing state of the first through hole 4; The bottom is connected with a buoyancy chamber 6 that moves up and down with the liquid level in the tank 1 , and one end of the slide plate 5 close to the first through hole 4 is provided with a vertically upward sealing plate 7 , and the sealing plate 7 is facing the first through hole 4 The hole wall of the first through hole 4 is provided with a second through hole 8 for the sealing plate 7 to pass through.

The traditional vehicle urea storage tank needs to set up monitoring equipment separately to monitor the solution content in the tank body 1, and needs to be ready to replace the tank body 1 at any time, which greatly wastes manpower. The setting of the temporary liquid storage mechanism makes the solution in the tank 1 reach a certain warning value, the sealing plate 7 is lifted by the buoyancy of the buoyancy chamber 6, and the sealing plate 7 moves upward through the second through hole 8, and then lifts up in the second through hole 8. On the side wall of the first through hole 4 , the first through hole 4 is closed, so that the urea solution cannot enter the tank body 1 , so as to limit the liquid level of the urea solution in the tank body 1 .

As shown in FIG. 2 and FIG. 3 , in another embodiment, the sealing plate 7 has a plurality of third through holes 9 evenly distributed along its vertical direction, and the sealing plate 7 is provided with holes along its axial direction. A sliding rod 10 is slidably arranged in the tunnel, and the bottom of the sliding rod 10 is connected with the inner wall of the tunnel through a spring 11. The sliding rod 10 is provided with a plurality of fourth through holes 12 which are in one-to-one correspondence with a plurality of third through holes 9, The side wall of the first through hole 4 away from the second through hole 8 is provided with a receiving groove 13 which is matched with the sealing plate 7 , and a vertical downward projection 14 is fixed in the receiving groove 13 ; the sealing plate 7 is embedded in the receiving groove 13 The inner protrusion 14 moves the sliding rod 10 , and the plurality of third through holes 9 and the plurality of fourth through holes 12 are staggered one by one and are not connected. In the process of sealing the first through hole 4, since the urea solution is pumped into the casing 3 through the transmission pipe 2, and then the first through hole 4 of the through hole enters the tank body 1, the actual pumping amount of the urea solution is relatively large. When using buoyancy to seal the first through hole 4 with the sealing plate 7, the impulsive force of the urea solution is likely to cause the sealing plate 7 to fail to seal the first through hole 4, resulting in failure to seal. Therefore, a plurality of third through holes 9 are opened on the sealing plate 7, and the resistance effect of the urea solution on the sealing plate 7 is reduced through the third drainage, and at the same time, a receiving groove 13 is opened on the side wall of the first through hole 4 for fitting The sealing plate 7 increases the locking ability of the sealing plate 7 . After the sealing plate 7 is fitted with the receiving groove 13, in order to realize the sealing of the sealing plate 7, a sliding rod 10 is arranged in the axial direction of the sealing plate 7, and the sliding rod 10 is matched with a one-to-one correspondence with the third through hole 9. In the fourth through hole 12, when the sealing plate 7 does not enter the receiving groove 13, the third through hole 9 corresponds to the fourth through hole 12, and the urea solution can enter the tank body 1 through the lifting rod. When the sealing plate 7 is fitted with the receiving groove 13, the receiving groove 13 is provided with a bump 14, and the bump 14 abuts against the sliding rod 10 and causes the sliding rod 10 to move downward for a period of time, resulting in the third through hole 9 and the fourth The through holes 12 are misaligned, the sealing plate 7 is closed, and the urea solution cannot enter the tank body 1 through the third through hole 9 , so that the tank body 1 is sealed.

In another embodiment, a guide rod 15 is provided vertically downward at the bottom of the housing 3 , a fifth through hole 16 is formed on the slide plate 5 , and the guide rod 15 passes through the fifth through hole 16 so that the slide plate 5 follows the guide rod 15 Move up and down. Since the jacking rod is slid upward through the buoyancy of the buoyancy chamber 6 under the sliding plate 5, a section of the sliding plate 5 is slidably arranged on the side wall of the tank body 1. In order to facilitate the sliding of the sliding plate 5, a guide rod is arranged vertically downward at the bottom of the casing 3. 15, so that the sliding plate 5 moves up and down along the guide rod 15 to increase the smoothness of sliding of the sliding plate 5.

In another embodiment, an indicator 17 communicating with the interior of the housing 3 is also connected to the side wall of the housing 3 , the indicator 17 includes a section of an L-shaped hollow channel, and one end of the hollow channel communicates with the interior of the housing 3 , the other end of the hollow channel is sealed, and an indicator liquid column is slidably arranged in the vertical section of the hollow channel. When the urea solution in the tank 1 reaches the preset liquid level, the first through hole 4 is closed, and the urea solution accumulates in the shell 3. When the urea solution reaches a certain height, the urea solution enters the hollow channel of the indicator 17, indicating The outside of the tank 17 is transparent, and the inside is sealed with a red indicating liquid column. When the indicating liquid column moves, it proves that the liquid level in the tank 1 reaches the preset value.

In another embodiment, the top of the tank body 1 is further provided with a vent hole, and the top of the vent hole is sealed by a vent cover 18 . When filling the solution in the tank 1, in order to avoid the inconvenience of filling the urea solution caused by the change of the internal pressure difference of the tank 1, a vent hole is opened at the top of the tank 1 to balance the pressure difference between the inside and outside of the tank 1 to facilitate the injection of the urea solution.

The working process of the utility model is as follows: when the urea solution is poured into the tank body 1 by using the transmission pipeline 2, the urea solution first enters the shell 3, and then enters the tank body through the first through hole 4 on the side wall of the shell 3. 1; When the liquid level of the urea solution in the tank body 1 is close to the bottom of the shell 3, the urea solution floods the buoyancy chamber 6, and the buoyancy chamber 6 provides buoyancy to push the slide plate 5 to move upward, while the sealing plate 7 passes through the first through hole 4 to the receiving groove 13. Moving in the direction, the urea solution continues to inject the urea solution into the tank body 1 through the third through hole 9 and the remaining part of the first through hole 4 . When the sealing plate 7 enters the receiving groove 13, the protrusion 14 in the receiving groove 13 abuts against the sliding rod 10, the sliding rod 10 moves downward in the sealing plate 7, and the third through hole 9 and the fourth through hole 12 are misaligned. The urea solution cannot pass through, the shell 3 is sealed, and the urea solution cannot continue to be poured into the tank 1 . The urea solution accumulates in the shell 3, and when it reaches a certain height, the urea solution enters the hollow channel of the indicator 17, and the urea solution pushes the indicator liquid column to move along the hollow channel, and external personnel can observe the tank body 1 through the red liquid column. The urea solution has reached the preset value.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The technical solutions are modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention.

Claims (5)

1. a urea storage tank for a vehicle, comprising a tank body, and being connected with a transmission pipeline that urea is introduced into the tank body on the side wall of the tank body, it is characterized in that, a temporary liquid storage mechanism is fixed on the inner wall of the tank, temporarily The liquid storage mechanism includes a casing that communicates with the transmission pipeline. A first through hole is opened on the side wall of the casing on the side away from the transmission pipeline. The jacking mechanism in the sealed state of the hole; The jacking mechanism includes a sliding plate slidingly arranged on the side wall of the tank body, a buoyancy cavity that moves up and down with the liquid level in the tank body is connected below the sliding plate, and a sealing plate that is vertically upward is arranged at one end of the sliding plate close to the first through hole, The sealing plate is facing the hole wall of the first through hole, and the hole wall of the first through hole is provided with a second through hole for the sealing plate to pass through. 2. A vehicle urea storage tank according to claim 1, wherein the sealing plate is uniformly distributed with a plurality of third through holes along its vertical direction, and the sealing plate is provided with a plurality of third through holes along its axial direction. A hole, a sliding rod is slid in the hole, the bottom of the sliding rod is connected with the inner wall of the hole by a spring, and the sliding rod is provided with a plurality of fourth through holes that are in one-to-one correspondence with a plurality of third through holes. A receiving groove matched with the sealing plate is opened on the side wall away from the second through hole, and a vertical downward convex block is fixed in the receiving groove; the sealing plate is embedded in the convex block in the receiving groove to make the sliding rod move, and a plurality of third The through holes and the plurality of fourth through holes are staggered one by one and are not connected. 3. The urea storage tank for a vehicle according to claim 1, wherein a guide rod is vertically downwardly arranged at the bottom of the casing, a fifth through hole is provided on the slide plate, and the guide rod passes through the fifth through hole. Holes to allow the slide plate to move up and down along the guide rod. 4. A vehicle urea storage tank according to claim 1, characterized in that, the side wall of the casing is also connected with an indicator communicating with the interior of the casing, and the indicator comprises a section of an L-shaped hollow channel One end of the hollow channel is communicated with the inside of the casing, the other end of the hollow channel is sealed, and an indicator liquid column is slidably arranged in the vertical section of the hollow channel. 5 . The urea storage tank for vehicles according to claim 1 , wherein a vent hole is also provided on the top of the tank body, and a vent cover is provided on the top of the vent hole. 6 .

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