A container can

Abstract

This invention belongs to the field of automotive reducing agent storage technology, and relates to a container. The container includes a tank body, with a heater and temperature sensor installed inside the inner tank. All openings of the tank body are located above the area filled with reducing agent. An inlet pipe and a connecting pipe are installed at the upper end of the tank body. A discharge device is installed on the connecting pipe. Both the inlet pipe and the connecting pipe on the tank body are equipped with sealing mechanisms. By rotating the first sealing plate, the sealing pipe is torsional, causing it to tightly adhere to the inlet pipe or connecting pipe. Simultaneously, a first sealing gasket abuts against the outer end face of the outer tank body, and a second sealing gasket abuts against the inner end face of the outer tank body, sealing the interlayer between the outer and inner tank bodies and preventing communication between the interlayer and the outside, thus improving the container's insulation performance. All openings of the tank body are located at the upper end, not in the area submerged in reducing agent, thus preventing direct leakage from the bottom of the container.

Description

Technical Field

[0001] This invention belongs to the field of automotive reducing agent storage technology, and relates to a container. Background Technology

[0002] Automobiles require exhaust gas treatment, especially diesel internal combustion engines, which need to use a large amount of reducing agents to reduce nitrogen oxides produced in the exhaust gas.

[0003] Containers used to hold reducing agents need to have openings, such as inlets or outlets, and openings for pipeline installation. These openings can be located in different positions on the tank. Currently, many openings are located at the bottom of the tank, placing them below the surface of the reducing agent. Because the reducing agent used, especially an aqueous solution of urea, is a creep-prone medium, it is more likely to corrode the sealing points at the openings, leading to more frequent leaks.

[0004] In addition, in order to achieve good heat preservation, the tank body often adopts a double-layer design. If the interlayer between the outer and inner layers at the opening of the tank body is not sealed well, the interlayer between the inner and outer layers will be connected to the outside, causing serious heat loss of the insulation layer, which is not conducive to the heat preservation of the tank body.

[0005] To address the above problems, this invention proposes a container. Summary of the Invention

[0006] To address the problems existing in the background art, the present invention proposes a container tank.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: it includes a tank, which includes an outer tank and an inner tank fixed inside the outer tank; the inner tank is equipped with a heater and a temperature sensor, and all openings of the tank are arranged above the area of ​​the tank filled with reducing agent.

[0008] The upper end of the tank is equipped with a feed pipe and a connecting pipe; the feed pipe is equipped with a ventilation device; and the connecting pipe is equipped with a discharge device.

[0009] Both the feed pipe and the connecting pipe are equipped with sealing mechanisms; the sealing mechanism includes a first sealing plate, a second sealing plate, and a sealing pipe;

[0010] The sealing tube is fixed between the first sealing plate and the second sealing plate; the first sealing plate is located at the upper end of the outer tank, and the second sealing plate is located between the outer tank and the inner tank; a first sealing gasket is fixed on the lower end face of the first sealing plate, and a second sealing gasket is fixed on the upper end face of the second sealing plate; fasteners are provided on the first sealing plate.

[0011] Furthermore, the fastener includes a fixing bolt; the first sealing plate has a threaded hole, which is threadedly engaged with the fixing bolt.

[0012] Furthermore, multiple limiting grooves are provided on the outer circular surface of the second sealing plate, and multiple limiting rods are fixedly connected to the top inner side of the outer tank; each limiting rod corresponds to one of the multiple limiting grooves, and each limiting groove slides in cooperation with the corresponding limiting rod.

[0013] Furthermore, the discharge device includes a first discharge pipe, a second discharge pipe, a return pipe, and a liquid pump;

[0014] The liquid pump is fixedly installed at the upper end of the connecting pipe;

[0015] One end of the first discharge pipe is connected to the outlet of the liquid pump, and the other end of the first discharge pipe is connected to the exhaust gas discharge channel;

[0016] One end of the second discharge pipe is connected to the inlet of the liquid pump, and the other end of the second discharge pipe passes through the upper end of the connecting pipe and extends into the lower part of the inner tank.

[0017] One end of the return pipe is connected to the first discharge pipe; the other end of the return pipe extends through the upper end of the connecting pipe into the tank.

[0018] Furthermore, a reflux valve is installed on the reflux pipe.

[0019] Furthermore, the lower end of the second discharge pipe is close to the heater.

[0020] Furthermore, the ventilation device includes an air pump; the upper end of the feed pipe is provided with a sealing cover, and the air pump is mounted on the sealing cover.

[0021] Furthermore, the temperature sensor is connected to the temperature transmitter via a contact wire.

[0022] Furthermore, the power cord of the heater passes through the upper end of the tank and is connected to a power source.

[0023] Furthermore, it also includes a controller, and the power supply and temperature transmitter are both electrically connected to the controller.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Both the feed pipe and the connecting pipe on the tank are equipped with sealing mechanisms. By rotating the first sealing plate, the sealing pipe is twisted and deformed, causing it to fit tightly against the feed pipe or connecting pipe. At the same time, the first sealing gasket abuts against the outer end face of the outer tank, and the second sealing gasket abuts against the inner end face of the outer tank, thus sealing the interlayer between the outer and inner tanks, preventing communication between the interlayer and the outside, and improving the insulation effect of the container.

[0026] 2. All openings of the tank are located at the top of the tank, in an area not submerged by the reducing agent. This prevents direct leakage from the bottom of the tank.

[0027] 3. A ventilation device is installed at the top of the tank to help maintain pressure balance inside and outside the tank. A reflux mechanism is installed on the tank to allow the remaining reducing agent to flow back into the tank. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0029] Figure 2 This is a cross-sectional view of the present invention;

[0030] Figure 3 In this invention Figure 2 Enlarged view of part A;

[0031] Figure 4 This is a schematic diagram of the structure of the second sealing plate in this invention.

[0032] In the diagram: 1. Inner tank; 2. Outer tank; 3. Support block; 4. Feed pipe; 5. Connecting pipe; 6. First sealing plate; 7. First sealing gasket; 8. Sealing pipe; 9. Second sealing plate; 10. Second sealing gasket; 11. Fixing bolt; 12. Sealing cover; 13. Air pump; 14. Heater; 15. Support frame; 16. Temperature sensor; 17. First discharge pipe; 18. Liquid pump; 19. Return pipe; 20. Return valve; 21. Limiting slide bar; 22. Second discharge pipe. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-4 As shown, the technical solution adopted by this invention is as follows: A container tank includes a tank body containing a reducing agent. The reducing agent is primarily urea. The tank body has a smooth internal design without irregular structures, reducing the probability of cracks caused by mechanical stress and minimizing the likelihood of tank leakage. All openings of the tank body are located at the top, in an area not submerged by the reducing agent. This reduces direct corrosion of welded or sealed areas by the reducing agent and prevents direct leakage from the bottom of the container.

[0035] The tank consists of an inner tank 1 and an outer tank 2, with the inner tank 1 located inside the outer tank 2. An air gap is formed between the outer tank 2 and the inner tank 1, providing thermal insulation. A support block 3 is fixed to the bottom wall of the outer tank 2, and the inner tank 1 is fixedly mounted on the support block 3. The support block 3 is made of thermal insulation material.

[0036] A support frame 15 is fixedly installed at the bottom of the inner tank 1, and a heater 14 is fixedly mounted on the support frame 15. The heater 14 has a power cord that passes through the upper end of the tank and is connected to a power source, which is also connected to a controller. The heater 14 heats the reducing agent inside the tank, maintaining it at a certain temperature.

[0037] A temperature sensor 16 is installed inside the inner tank 1. The temperature sensor 16 has a contact wire that passes through the upper end of the tank and is connected to a temperature transmitter. The temperature transmitter converts the signal from the temperature sensor 16 into a current signal, which is then displayed by a corresponding instrument. The temperature transmitter is electrically connected to the controller. The controller controls the heater 14 based on the signal from the temperature transmitter.

[0038] The tank has an inlet and an outlet at the top. A feed pipe 4 is installed at the inlet, and a connecting pipe 5 is installed at the outlet.

[0039] The lower end of the feed pipe 4 is fixedly connected to the upper end of the inner tank 1. A sealing cover 12 is installed on the feed pipe 4, and a ventilation device is installed on the sealing cover 12. The power cord and contact wire are both led out of the tank through the sealing cover 12. Conventional sealing components are installed at the connection points between the power cord and contact wire and the sealing cover 12.

[0040] The ventilation device includes an air pump 13, which is mounted on a sealing cover 12. A vent is provided on the sealing cover 12, and the outlet of the air pump 13 is connected to the vent. After feeding is completed, the sealing cover 12 is installed on the upper end of the feed pipe 4 to seal the feed pipe 4. The air pump 13 balances the air pressure inside and outside the inner tank 1, maintaining a pressure balance between the inside and outside of the tank.

[0041] The lower end of the connecting pipe 5 is fixedly connected to the upper end of the inner tank 1. The upper end of the connecting pipe 5 extends out of the tank and is a conventional sealing component. A discharge device is installed on the connecting pipe 5.

[0042] The discharge device includes a first discharge pipe 17, a second discharge pipe 22, a return pipe 19, and a liquid pump 18.

[0043] The liquid pump 18 is fixedly installed at the upper end of the connecting pipe 5. One end of the first discharge pipe 17 is connected to the outlet of the liquid pump 18, and the other end of the first discharge pipe 17 is connected to the exhaust gas discharge channel. One end of the second discharge pipe 22 is connected to the inlet of the liquid pump 18, and the other end of the second discharge pipe 22 passes through the upper end of the connecting pipe 5 and extends into the lower part of the inner tank 1. The lower end of the second discharge pipe 22 is close to the heater 14.

[0044] One end of the return pipe 19 is connected to the first discharge pipe 17, and the other end of the return pipe 19 extends through the upper end of the connecting pipe 5 into the inner tank 1. A return valve 20 is installed on the return pipe 19. The return valve 20 prevents the reducing agent in the tank from entering the first discharge pipe 17 through the return pipe 19, but excess reducing agent in the first discharge pipe 17 can enter the tank through the return valve 20.

[0045] Both the feed pipe 4 and the connecting pipe 5 are equipped with sealing mechanisms. These sealing mechanisms create a sealed structure between the feed pipe 4 or the connecting pipe 5 and the tank body. This forms a sealed space between the inner tank body 1 and the outer tank body 2, improving the tank's insulation performance. The sealing mechanisms are fitted onto the feed pipe 4 and the connecting pipe 5.

[0046] The sealing mechanism includes a first sealing plate 6, a second sealing plate 9, and a sealing tube 8. The sealing tube 8 is fixed between the first sealing plate 6 and the second sealing plate 9. The sealing tube 8 is sleeved on the feed pipe 4 or the connecting pipe 5. The first sealing plate 6 is located at the top of the outer tank 2, and the second sealing plate 9 is located in the interlayer between the inner tank 1 and the outer tank 2. A first sealing gasket 7 is fixed to the lower end face of the first sealing plate 6, and the first sealing gasket 7 mates with the outer side of the top of the outer tank 2. A second sealing gasket 10 is fixed to the upper end face of the second sealing plate 9, and the second sealing gasket 10 mates with the inner side of the outer tank 2.

[0047] Fasteners are provided on the first sealing plate 6. The fasteners include fixing bolts 11, and the first sealing plate 6 has threaded holes that are threadedly connected to the fixing bolts 11.

[0048] Multiple limiting grooves are formed on the outer circular surface of the second sealing plate 9. Multiple limiting rods 21 are fixedly provided on the inner side of the top of the outer tank body 2, and the multiple limiting rods 21 correspond one-to-one with the multiple limiting grooves. The limiting rods 21 slide in conjunction with the limiting grooves.

[0049] All sealing points on the tank, such as those for the electrical contact of the temperature sensor 16, the heater 14 located inside the tank, and the sealing points for various pipelines, and where applicable, are located in the upper ceiling area of ​​the tank, which is not submerged by the reducing agent. This reduces the chance of direct contact with the reducing agent, thereby reducing corrosion of the sealing points by the reducing agent.

[0050] Working principle:

[0051] Rotating the first sealing plate 6 causes the sealing tube 8 to rotate as well. Due to the engagement of the limiting slide rod 21 and the limiting groove, the second sealing plate 9 cannot rotate. This causes the sealing tube 8 to twist and deform, forming a spiral shape. During this process, the inner diameter of the sealing tube 8 decreases, and the outer diameter increases, causing the inner side of the sealing tube 8 to come into close contact with the outer side of the feed pipe 4 or connecting pipe 5. Simultaneously, the length of the sealing tube 8 decreases, causing the first sealing plate 6 to move closer to the outer side of the outer tank 2, abutting against the outer surface of the outer tank 2. At the same time, the second sealing plate 9 slides along the limiting slide rod 21 closer to the inner side of the outer tank 2, causing the second sealing gasket 10 to abut against the inner side of the outer tank 2. The interlayer between the outer tank 2 and the inner tank 1 is sealed, preventing communication between the interlayer and the outside through the gap between the feed pipe 4 or connecting pipe 5 and the outer tank 2. This improves the insulation effect of the container. Then tighten the fixing bolts 11 to prevent the first sealing plate 6 from reversing.

[0052] In use, the liquid pump 18 and the air pump 13 are started. The liquid pump 18 delivers the reducing agent in the inner tank 1 to the first discharge pipe 17 through the second discharge pipe 22, and then flows into the exhaust gas discharge channel. The remaining reducing agent can fall back into the inner tank 1 through the return pipe 19. The air pump 13 balances the air pressure inside and outside the inner tank 1, keeping the container in pressure equilibrium. The temperature inside the inner tank 1 can be detected by the temperature sensor 16. When the temperature is low, the heater 14 can be started to heat the reducing agent.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A container, characterized in that: The container includes an outer tank (2) and an inner tank (1) fixed inside the outer tank (2); the inner tank (1) is equipped with a heater (14) and a temperature sensor (16); all openings of the container are arranged above the area of ​​the container filled with reducing agent; a feed pipe (4) and a connecting pipe (5) are installed at the upper end of the container; a ventilation device is provided on the feed pipe (4); a discharge device is installed on the connecting pipe (5); a sealing mechanism is provided on both the feed pipe (4) and the connecting pipe (5); the sealing mechanism is... The mechanism includes a first sealing plate (6), a second sealing plate (9), and a sealing tube (8); the sealing tube (8) is fixed between the first sealing plate (6) and the second sealing plate (9); the first sealing plate (6) is located at the upper end of the outer tank (2), and the second sealing plate (9) is located between the outer tank (2) and the inner tank (1); a first sealing gasket (7) is fixed on the lower end face of the first sealing plate (6), and a second sealing gasket (10) is fixed on the upper end face of the second sealing plate (9); fasteners are provided on the first sealing plate (6); The fasteners include fixing bolts (11); the first sealing plate (6) has a threaded hole, which is threadedly engaged with the fixing bolts (11); The outer circular surface of the second sealing plate (9) is provided with multiple limiting grooves, and the inner top of the outer tank (2) is fixedly connected with multiple limiting rods (21); the limiting rods (21) correspond one-to-one with the multiple limiting grooves, and each limiting groove slides in cooperation with the corresponding limiting rod (21).

2. A container according to claim 1, characterized in that: The discharge device includes a first discharge pipe (17), a second discharge pipe (22), a return pipe (19), and a liquid pump (18); the liquid pump (18) is fixedly installed at the upper end of the connecting pipe (5); one end of the first discharge pipe (17) is connected to the outlet of the liquid pump (18), and the other end of the first discharge pipe (17) is connected to the exhaust gas discharge channel; one end of the second discharge pipe (22) is connected to the inlet of the liquid pump (18), and the other end of the second discharge pipe (22) passes through the upper end of the connecting pipe (5) and extends into the lower part of the inner tank (1); one end of the return pipe (19) is connected to the first discharge pipe (17); the other end of the return pipe (19) passes through the upper end of the connecting pipe (5) and extends into the tank.

3. A container tank according to claim 2, characterized in that: A reflux valve (20) is installed on the reflux pipe (19).

4. A container tank according to claim 2, characterized in that: The lower end of the second discharge pipe (22) is close to the heater (14).

5. A container according to claim 1, characterized in that: The ventilation device includes an air pump (13); the upper end of the feed pipe (4) is provided with a sealing cover (12), and the air pump (13) is installed on the sealing cover (12).

6. A container tank according to claim 1, characterized in that: The temperature sensor (16) is connected to the temperature transmitter via a contact wire.

7. A container tank according to claim 6, characterized in that: The power cord of the heater (14) passes through the upper end of the tank and is connected to the power source.

8. A container according to claim 7, characterized in that: It also includes a controller, and the power supply and temperature transmitter are both electrically connected to the controller.

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