Bus urea filling structure

Abstract

The utility model provides a urea filling structure for a bus, which belongs to the technical field of urea boxes and comprises a urea box, a liquid filling port and an iron ring, the liquid filling port and the iron ring are arranged on the urea box, the urea box is mounted in the bus, a monitoring device is mounted on the inner wall of the urea box in a threaded manner, and a heating pipe and a connecting rod are mounted at the bottom of the monitoring device respectively. A liquid level sensor is mounted at one end of the connecting rod. According to the urea injection device, the liquid level sensor is matched with the electromagnet to automatically block the liquid injection port after the urea capacity reaches a set height, so that waste caused by leakage of urea overflowing from the liquid injection port in the urea injection process is avoided; meanwhile, the liquid injection pipe bounces while blocking the liquid injection opening after liquid injection of the urea box is completed, so that an operator can directly observe the movement of the liquid injection pipe, urea conveying can be stopped in time, the liquid injection pipe is limited through a limiting block arranged on the outer side of the liquid injection pipe, and the liquid injection efficiency is improved. The liquid injection pipe is prevented from popping out of the liquid injection port and falling to the ground to cause pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of urea boxes, and in particular to a urea filling structure for a bus. Background Art

[0002] With the increasing awareness of environmental protection, automobile exhaust emission control has become an important issue in the development of today's automobile industry. As an important part of public transportation, the exhaust emission problem of buses has attracted widespread attention. Urea filling structure is one of the key technologies to reduce automobile exhaust emissions. The bus urea filling structure includes urea tank, filling pump, injection system, guide pipe and urea filling station and other main components.

[0003] In the prior art, the urea filling process in the urea tank is completely controlled by the amount of urea poured, and it is impossible to accurately judge whether the urea filling is completed, so that the urea is easily overflowed during the filling process, causing waste. How to invent a bus urea filling structure to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a urea filling structure for a bus, aiming to improve the problem of urea overflowing and causing waste during the process of filling urea into the urea tank.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a urea filling structure for a bus, comprising a urea box, a liquid injection port and an iron ring arranged on the urea box, wherein the urea box is installed inside the bus, a monitoring device is threadedly installed on the inner wall of the urea box, a heating pipe and a connecting rod are respectively installed at the bottom of the monitoring device, and a liquid level sensor is installed at one end of the connecting rod;

[0007] The injection port is installed on the inner wall of the urea tank, an adjustment groove is provided on the inner wall at the bottom end of the injection port, a sealing groove is provided on the inner wall at the upper end of the injection port, an electromagnet is installed on the inner wall below the injection port close to the adjustment groove, a fixing frame is provided at the bottom end of the injection port, a fixing sleeve is provided at the upper end of the fixing frame, a liquid outlet and a liquid inlet are respectively provided on the inner wall of the fixing sleeve, and a baffle is provided at the upper end of the fixing sleeve;

[0008] The outer wall of the iron ring is slidably connected to the inner wall of the adjusting groove, a positioning sleeve is arranged on the upper outer wall of the iron ring, and a liquid injection pipe is installed on the inner wall of the positioning sleeve.

[0009] Preferably, the monitoring device monitors the urea capacity inside the urea tank in real time through a liquid level sensor, the output end of the monitoring device is electrically connected to the input end of the heating tube and the electromagnet respectively, and the signal output end of the liquid level sensor is electrically connected to the signal input end of the monitoring device.

[0010] Preferably, the outer wall of the fixing frame is fixedly connected to the inner wall of the bottom end of the liquid injection port, and the outer wall of the fixing frame is fixedly connected to one end of the fixing sleeve.

[0011] Preferably, the liquid inlet is opened above the liquid outlet, and the liquid inlet and the liquid outlet are connected through the inner cavity of the fixing sleeve.

[0012] Preferably, one end of the fixing sleeve is fixedly connected to the baffle, a sealing ring is fixedly connected to an outer wall of one side of the baffle, and the iron ring is magnetically connected to the electromagnet.

[0013] By adopting the above technical solution, when injecting urea into the urea tank of the bus, the injection pipe is inserted into the positioning sleeve so that the iron ring at one end of the positioning sleeve is overlapped on the fixing frame. At this time, the urea tank is injected by connecting the external urea input pipeline through the injection pipe. After the urea enters the fixing sleeve through the liquid inlet, it flows into the interior of the urea tank through the liquid outlet. When the urea injection capacity height reaches the set value, the electromagnet is energized to generate magnetic force to repel the iron ring upward so that its upper end abuts against the baffle, and its inner wall seals the liquid inlet. At this time, the injection is stopped, and then the injection pipe is removed and the sealing groove is sealed by the sealing plug.

[0014] Preferably, the inner wall of the liquid injection port close to the sealing groove is provided with four equidistant limit grooves, and the outer wall of the liquid injection tube is fixedly connected with a limit block which is slidably connected to the limit grooves.

[0015] Preferably, the outer wall of the injection tube and the inner wall of the positioning sleeve are rotatably connected, and one end of the injection tube is overlapped on the positioning sleeve.

[0016] By adopting the above technical solution, when installing the injection tube, the outer limit block cooperates with the limit groove opened on the inner wall of the injection port to insert it into the inner wall of the injection port, and then the injection tube is rotated so that the limit block and the limit groove are not in the same horizontal plane. After the injection is completed, the injection tube rises and passes through the limit block to rest on the inner wall of the injection port to prevent it from directly popping out of the injection port and causing pollution.

[0017] The beneficial effects of the utility model are:

[0018] The liquid level sensor cooperates with the electromagnet to automatically block the injection port after the urea capacity reaches the set height, thereby preventing urea from overflowing from the injection port and leaking during the urea injection process, causing waste. At the same time, the injection pipe pops up while blocking the injection port after the urea tank is filled with liquid, so that the operator can directly observe the movement of the injection pipe, thereby stopping the delivery of urea in time, and the limit block set on the outside of the injection pipe limits the injection pipe to prevent the injection pipe from popping out of the injection port and falling to the ground to cause pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of a urea filling structure for a bus provided by an embodiment of the utility model;

[0021] Figure 2 This is a cross-sectional view of a urea filling structure for a bus provided by an embodiment of the utility model;

[0022] Figure 3 This is an exploded view of a local area of ​​a bus urea filling structure provided by an embodiment of the utility model;

[0023] Figure 4 This is a half-section view of a local area of ​​a urea filling structure for a bus provided by an embodiment of the utility model;

[0024] Figure 5 This is a half-section diagram of a urea filling structure for a bus provided by an embodiment of the utility model;

[0025] Figure 6 This is a urea filling structure for buses provided by the utility model. Figure 5 A magnified view of the structure of area A.

[0026] In the figure: 1. urea tank; 2. monitoring device; 3. heating pipe; 4. connecting rod; 5. liquid level sensor; 6. liquid filling port; 7. adjusting slot; 8. sealing slot; 9. limit slot; 10. electromagnet; 11. fixing frame; 12. fixing sleeve; 13. liquid outlet; 14. liquid inlet; 15. baffle; 16. sealing ring; 17. iron ring; 18. positioning sleeve; 19. liquid filling pipe; 20. limit block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example, see Figure 1-Figure 6 A urea filling structure for a bus includes a urea tank 1, a liquid injection port 6 and an iron ring 17 arranged on the urea tank 1, the urea tank 1 is installed inside the bus, a monitoring device 2 is threadedly installed on the inner wall of the urea tank 1, a heating pipe 3 and a connecting rod 4 are respectively installed at the bottom of the monitoring device 2, and a liquid level sensor 5 is installed at one end of the connecting rod 4;

[0029] The liquid injection port 6 is installed on the inner wall of the urea tank 1, and an adjusting groove 7 is provided on the inner wall at the bottom end of the liquid injection port 6, and a sealing groove 8 is provided on the inner wall at the upper end of the liquid injection port 6. An electromagnet 10 is installed on the inner wall below the liquid injection port 6 close to the adjusting groove 7, and a fixing frame 11 is provided at the bottom end of the liquid injection port 6, and a fixing sleeve 12 is provided at the upper end of the fixing frame 11. The inner wall of the fixing sleeve 12 is respectively provided with a liquid outlet 13 and a liquid inlet 14, and a baffle 15 is provided at the upper end of the fixing sleeve 12;

[0030] The outer wall of the iron ring 17 is slidably connected to the inner wall of the adjusting groove 7 . A positioning sleeve 18 is provided on the outer wall of the upper end of the iron ring 17 . A liquid injection pipe 19 is installed on the inner wall of the positioning sleeve 18 .

[0031] Furthermore, the monitoring device 2 monitors the urea capacity inside the urea tank 1 in real time through the liquid level sensor 5, the output end of the monitoring device 2 is electrically connected to the input end of the heating tube 3 and the electromagnet 10 respectively, the signal output end of the liquid level sensor 5 is electrically connected to the signal input end of the monitoring device 2, the outer wall of the fixed frame 11 is fixedly connected to the inner wall of the bottom end of the liquid injection port 6, the outer wall of the fixed frame 11 is fixedly connected to one end of the fixed sleeve 12, the liquid inlet 14 is opened above the liquid outlet 13, the liquid inlet 14 and the liquid outlet 13 are connected through the internal cavity of the fixed sleeve 12, one end of the fixed sleeve 12 is fixedly connected to the baffle 15, one side outer wall of the baffle 15 is fixedly connected with a sealing ring 16, and the iron ring 17 is magnetically connected to the electromagnet 10.

[0032] It should be noted that when injecting urea into the urea tank 1 of the bus, the injection pipe 19 is inserted into the positioning sleeve 18, so that the iron ring 17 at one end of the positioning sleeve 18 is overlapped on the fixing frame 11. At this time, the external urea input pipeline is connected to the urea tank 1 through the injection pipe 19 to inject liquid. The urea flows into the interior of the positioning sleeve 18 through the injection pipe 19, and then enters the interior of the fixing sleeve 12 through the liquid inlet 14 on one side, and then flows into the interior of the urea tank 1 through the liquid outlet 13. When the urea injection capacity reaches the set value, the liquid level sensor 12 is turned on. The sensor 5 transmits a signal to the monitoring device 2 so that it controls the electromagnet 10 to be energized. The electromagnet 10 generates a magnetic force to repel the iron ring 17 upward so that its upper end abuts against the baffle 15. At the same time, the sealing ring 16 on the baffle 15 is in close contact with the iron ring 17, so that the inner wall of the iron ring 17 blocks the liquid inlet 14, and the urea is stopped from being injected into the urea tank 1, so as to avoid excessive urea injection and leakage from the injection port 6 to cause waste. Then, the injection pipe 19 is removed and the sealing groove 8 is sealed to the injection port 6 through the sealing plug.

[0033] Furthermore, four equidistant limit grooves 9 are opened on the inner wall of the injection port 6 near the sealing groove 8, and the outer wall of the injection tube 19 is fixedly connected to a limit block 20 that is slidably connected to the limit groove 9. The outer wall of the injection tube 19 is rotatably connected to the inner wall of the positioning sleeve 18, and one end of the injection tube 19 is overlapped on the positioning sleeve 18.

[0034] It should be noted that: when installing the injection pipe 19, the outer limit block 20 is cooperated with the limit groove 9 opened on the inner wall of the injection port 6 to insert it into the inner wall of the injection port 6, and then the injection pipe 19 is rotated so that the limit block 20 and the limit groove 9 are not in the same horizontal plane. When the injection is completed, the injection pipe 19 bounces upward, which can be judged that the injection is completed at this time, thereby stopping the delivery of urea in time. At the same time, during the process of the injection pipe 19 bouncing up, the limit block 20 is used to press against the inner wall of the injection port 6 to prevent it from directly popping out of the injection port 6 and causing pollution.

[0035] The working principle of the urea filling structure for buses:

[0036] When injecting urea into the urea tank 1 of the bus, when installing the injection pipe 19, the outer limiting block 20 is cooperated with the limiting groove 9 opened on the inner wall of the injection port 6 to insert it into the inner wall of the injection port 6, and then the injection pipe 19 is rotated so that the limiting block 20 and the limiting groove 9 are not in the same horizontal plane, and the injection pipe 19 is inserted into the positioning sleeve 18, so that the iron ring 17 at one end of the positioning sleeve 18 is overlapped on the fixing frame 11, and at this time, the external urea input pipeline is connected to the injection pipe 19 to inject liquid into the urea tank 1, and urea flows into the interior of the positioning sleeve 18 through the injection pipe 19, and then enters the interior of the fixing sleeve 12 through the liquid inlet 14 on one side, and then flows into the interior of the urea tank 1 through the liquid outlet 13. When the urea injection capacity reaches the set value, the liquid level sensor The device 5 transmits a signal to the monitoring device 2 to control the electromagnet 10 to be energized. The electromagnet 10 is energized to generate a magnetic force to repel the iron ring 17 upward so that its upper end abuts against the baffle 15. At the same time, the sealing ring 16 on the baffle 15 is in close contact with the iron ring 17, so that the inner wall of the iron ring 17 blocks the liquid inlet 14. At the same time, the injection pipe 19 bounces upward to determine that the injection is completed at this time, thereby stopping the delivery of urea in time. During the process of the injection pipe 19 bouncing up, the limit block 20 abuts against the inner wall of the injection port 6 to prevent it from directly popping out of the injection port 6 to cause pollution. Afterwards, the injection pipe 19 is removed and the sealing groove 8 is sealed to the injection port 6 through the sealing plug to prevent excessive urea injection from leaking from the injection port 6 and causing waste.

[0037] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0038] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A urea filling structure for a bus, comprising a urea tank (1) and a liquid injection port (6) and an iron ring (17) arranged on the urea tank (1), characterized in that: The urea tank (1) is installed inside the bus, and a monitoring device (2) is threadedly installed on the inner wall of the urea tank (1). A heating pipe (3) and a connecting rod (4) are respectively installed at the bottom of the monitoring device (2), and a liquid level sensor (5) is installed at one end of the connecting rod (4); The liquid injection port (6) is installed on the inner wall of the urea tank (1); an adjusting groove (7) is provided on the inner wall at the bottom end of the liquid injection port (6); a sealing groove (8) is provided on the inner wall at the upper end of the liquid injection port (6); an electromagnet (10) is installed on the inner wall below the liquid injection port (6) close to the adjusting groove (7); a fixing frame (11) is provided at the bottom end of the liquid injection port (6); a fixing sleeve (12) is provided at the upper end of the fixing frame (11); a liquid outlet (13) and a liquid inlet (14) are respectively provided on the inner wall of the fixing sleeve (12); and a baffle (15) is provided at the upper end of the fixing sleeve (12); The outer wall of the iron ring (17) is slidably connected to the inner wall of the adjusting groove (7); a positioning sleeve (18) is provided on the upper outer wall of the iron ring (17); and a liquid injection pipe (19) is installed on the inner wall of the positioning sleeve (18).

2. The urea filling structure for buses according to claim 1, characterized in that: The monitoring device (2) monitors the urea capacity inside the urea tank (1) in real time via a liquid level sensor (5); the output end of the monitoring device (2) is electrically connected to the heating tube (3) and the input end of the electromagnet (10), respectively; and the signal output end of the liquid level sensor (5) is electrically connected to the signal input end of the monitoring device (2).

3. The urea filling structure for buses according to claim 2, characterized in that: The outer wall of the fixing frame (11) is fixedly connected to the inner wall of the bottom end of the liquid injection port (6), and the outer wall of the fixing frame (11) is fixedly connected to one end of the fixing sleeve (12).

4. The urea filling structure for buses according to claim 3, characterized in that: The liquid inlet (14) is opened above the liquid outlet (13), and the liquid inlet (14) and the liquid outlet (13) are connected via the internal cavity of the fixing sleeve (12).

5. The urea filling structure for buses according to claim 4, characterized in that: One end of the fixed sleeve (12) is fixedly connected to the baffle (15), one side outer wall of the baffle (15) is fixedly connected with a sealing ring (16), and the iron ring (17) is magnetically connected to the electromagnet (10).

6. The urea filling structure for buses according to claim 1, characterized in that: The inner wall of the liquid injection port (6) close to the sealing groove (8) is provided with four equidistant limit grooves (9), and the outer wall of the liquid injection pipe (19) is fixedly connected with a limit block (20) which is slidably connected to the limit groove (9).

7. The urea filling structure for buses according to claim 6, characterized in that: The outer wall of the injection tube (19) and the inner wall of the positioning sleeve (18) are rotatably connected, and one end of the injection tube (19) is overlapped on the positioning sleeve (18).

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