Urea spraying device suitable for agricultural engine

Abstract

The utility model discloses a urea spraying device suitable for an agricultural engine. The urea spraying device comprises a sensor module, a urea liquid return pipe, an electronic sleeve, a mounting base, a shell, a first plug, a second plug and a supporting assembly. A mounting base is arranged on the lower end face of the shell, a first plug is arranged at an electromagnetic valve mounting hole in the upper end face of the shell, and second plugs are arranged at a cooling water inlet and a cooling water outlet in the side face of the shell; the sensor module is arranged at a certain distance below the shell; a urea liquid return pipe and an electronic sleeve are vertically arranged between the shell and the sensor module, a supporting assembly is arranged around the urea liquid return pipe and the electronic sleeve in the axial direction, the supporting assembly comprises two vertically-arranged tubular parts, the first ends of the two tubular parts are both arranged on the bottom face of the installation base, and the other ends of the two tubular parts are connected together. A spiral pipe body is arranged at the position close to the sensor module, and a clamping block is arranged on the spiral pipe body to fix the spiral pipe body and the sensor module. The device saves cost and is firm in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a urea injection device suitable for agricultural engines. Background Art

[0002] Urea injection device is a device used to inject urea solution into automobile exhaust to reduce nitrogen oxide emissions in diesel exhaust. There are safety issues in the direct use of ammonia in the SCR system, and it is inconvenient to store, transport and use. Therefore, in the current SCR system, urea solution is used to produce ammonia. The specific process is: the urea solution is injected into the exhaust system, and under the action of exhaust heat and water, the injected urea solution is converted into ammonia through pyrolysis and hydrolysis. Urea solution has the problem of low-temperature condensation. In order to ensure that vehicle exhaust emissions can meet regulatory requirements in low-temperature environments, urea tanks and urea injection pipes are usually required to have heating functions to prevent urea crystals from clogging the pipeline in low-temperature environments.

[0003] Conventional urea injection devices such as Figure 1 As shown, in a larger urea tank, coolant heating is generally adopted. The engine coolant enters the spiral heating pipeline 3 from the cooling water inlet joint 1, performs heat exchange therein, thereby heating the urea solution, and finally flows out from the cooling water outlet joint 2. The solenoid valve 4 is mainly used to control the flow of the engine coolant. In this way, the hot coolant can effectively heat the urea solution to prevent it from crystallizing. When the engine starts to run, the urea solution needs to be thawed first. When the ambient temperature is very low, the urea solution needs to be kept at a certain temperature to prevent it from freezing again.

[0004] Agricultural engines are usually used in the south and central China. Agricultural machinery works mostly in summer and autumn. In winter, agricultural machinery does not work and there is no need to start the heating function, which causes a waste of resources. It is necessary to propose a urea injection device suitable for agricultural engines.

[0005] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0006] The utility model aims to provide an anti-icing device suitable for a crankcase ventilation system to solve the technical problem of ice forming at the intersection of a respirator outlet pipe and an air inlet pipe in the above-mentioned prior art.

[0007] To this end, the utility model provides a urea injection device suitable for agricultural engines.

[0008] Preferably, the utility model may also have the following technical features:

[0009] A urea injection device suitable for an agricultural engine comprises a sensor module, a urea return pipe, an electronic sleeve, a mounting seat, a shell, a first plug, a second plug and a support assembly; the lower end surface of the shell is provided with the mounting seat, the electromagnetic valve mounting hole of the upper end surface thereof is provided with a first plug, and the cooling water inlet and the cooling water outlet of the side thereof are both provided with second plugs; the sensor module is arranged at a certain distance below the shell; the urea return pipe and the electronic sleeve are vertically arranged between the shell and the sensor module, and the support assembly is arranged around the urea return pipe and the electronic sleeve along the axial direction thereof, and the support assembly is two vertically arranged tubular components, the first ends of the two tubular components are both arranged on the bottom surface of the mounting seat, and the other ends are connected together, and the spiral tube body is arranged near the sensor module, and a clamping block is arranged on the spiral tube body to fix the spiral tube body to the sensor module.

[0010] Preferably, a float liquid level sensor is provided on the electronic sleeve, and at least one of the vertically arranged tubular components is arranged to be a curved tubular body near the float liquid level sensor.

[0011] Preferably, a first pipe clamp is arranged in the middle of the two tubular components, and two ends of the first pipe clamp are respectively connected to the two tubular components to fix the two tubular components together, and the first pipe clamp is sleeved on the curved tube body.

[0012] Preferably, both ends of the first tube clamp are snap-fit ​​structures, and the two ends of the first tube clamp are respectively snapped into the two tubular components, and the snap-fit ​​structures are made of a material that can be slightly deformed.

[0013] Preferably, both ends of the first tube clamp are fixed by connecting pieces, and the ends of the first tube clamp are arranged around the tubular component and fixed by connecting pieces.

[0014] Preferably, the connecting member is a bolt.

[0015] Preferably, the number of spirals of the spiral tube is set to 2 or 3 turns.

[0016] Preferably, a second pipe clamp is provided at the first end of the tubular component below the first plug, the second pipe clamp is sleeved outside the tubular component, and the second pipe clamp is provided with a connection with the mounting seat to fix the second pipe clamp to the bottom of the mounting seat.

[0017] The beneficial effects of the present invention compared with the prior art include:

[0018] The device is provided with a first plug at the original solenoid valve installation hole, and a second plug is provided at both the cooling water inlet and the cooling water outlet, which not only saves manufacturing costs, but also effectively avoids structural freezing and cracking failures caused by users mistakenly adding water into the urea pump; a support component is provided around the urea return pipe and the electronic sleeve, and a card block is provided on the spiral tube body of the tubular component to fix the support component to the sensor module, thereby reinforcing the sensor module and making the entire device structure more solid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the prior art.

[0020] Figure 2 It is a first structural schematic diagram of a specific implementation mode of the utility model.

[0021] Figure 3 It is a second structural schematic diagram of a specific implementation mode of the utility model.

[0022] Figure 4 It is a third structural schematic diagram of a specific implementation method of the utility model.

[0023] Figure 5 It is a fourth structural schematic diagram of a specific implementation method of the utility model.

[0024] Description of reference numerals:

[0025] 1-Cooling water inlet connector; 2-Cooling water outlet connector; 3-Spiral heating pipeline; 4-Solenoid valve; 02-Sensor module; 03-Urea return pipe; 04-Electronic sleeve; 05-Mounting seat; 06-Shell; 61-Solenoid valve mounting hole; 62-Cooling water inlet; 63-Cooling water outlet; 07-First plug; 08-Second plug 09-Support assembly; 10-Tubular component; 101-Spiral tube body; 102-Bent tube body; 11-Block; 12-Float level sensor; 13-First pipe clamp; 14-Connector; 15-Second pipe clamp; 151-Mounting block; DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with specific implementations and in conjunction with the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0027] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically stated.

[0028] A urea injection device suitable for agricultural engines, such as Figures 2 to 5 As shown, it includes a sensor module 02, a urea return pipe 03, an electronic sleeve 04, a mounting seat 05, a shell 06, a first plug 07, a second plug 08 and a support assembly 09; the mounting seat 05 is provided on the lower end surface of the shell 06, the first plug 07 is provided at the solenoid valve mounting hole 61 on the upper end surface thereof, and the second plug 08 is provided at the cooling water inlet 62 and the cooling water outlet 63 on the side thereof; the sensor module 02 is provided at a certain distance below the shell 06, and a vertical plug 08 is provided between the shell 06 and the sensor module 02. The urea liquid return pipe 03 and the electronic sleeve 04 are axially arranged with the support assembly 09 around them. The support assembly 09 is two vertically arranged tubular components 10. The first ends of the two tubular components 10 are both arranged on the bottom surface of the mounting seat 05, and the other ends are connected together. They are arranged into a spiral tube body 101 near the sensor module 02, and a clamping block 11 is arranged on the spiral tube body 101 to fix the spiral tube body 101 to the sensor module 02.

[0029] This device is suitable for agricultural engines, such as Figure 1 As shown, the original mature matching urea pump housing is provided with a solenoid valve 4, a cooling water inlet connector 1 and a cooling water outlet connector 2, which are respectively arranged at the solenoid valve mounting hole, the cooling water inlet and the cooling water outlet. Agricultural engines are usually used in the south and the Central Plains. The working time of agricultural engines is mostly in summer and autumn, and they rarely work in winter. Due to the characteristics of the climate in the south and the Central Plains, even if the agricultural engine is used in winter, the inside of the urea pump will not freeze, and there is no need to start the heating function, which causes a waste of resources. In addition, it is possible that the user mistakenly passes water to the cooling water inlet connector during use, which causes water to accumulate in the urea pump and freeze, causing freezing and cracking failures of pipes, joints and other structures. Figure 2 As shown, the device is provided with a first plug 07 at the original solenoid valve installation hole 61, and a second plug 08 is provided at both the cooling water inlet 62 and the cooling water outlet 63, which not only saves costs, but also effectively avoids structural freezing and cracking failures caused by users mistakenly adding water to the urea pump. The original spiral heating water pipe is only used for support. It can be understood that a sensor is provided on the sensor module 02. In order to prevent the entire device from shaking, the tubular component 10 is provided near the sensor module 02 to form a spiral tube body 101, and a clamping block 11 is provided on the spiral tube body 101 to fix the spiral tube body 101 to the sensor module 02. Specifically, the number of spirals of the spiral tube body 101 can be set to 2 or 3 turns, which can stabilize the sensor and the sensor module 02, without setting too many spirals, simplifying the manufacturing process and saving manufacturing costs.

[0030] When used specifically, Figure 2 and 3 As shown, the sensor, sensor module 02, support assembly 09, urea return pipe 03, electronic sleeve 04, etc. will be placed in a urea tank (not shown in the figure), and a float liquid level sensor 12 is arranged on the electronic sleeve 04. In order to increase the stability of the device, at least one vertically arranged tubular component 10 is arranged near the float liquid level sensor 12 to form a curved tube body 102 to avoid interference between the tubular component 10 and the float liquid level sensor 12.

[0031] Specifically, Figure 3 As shown, a first tube clamp 13 can be provided in the middle of the two tubular components 10, and the two ends of the first tube clamp 13 are respectively connected to the two tubular components 10 to fix the two tubular components 10 together. The first tube clamp 13 is sleeved on the curved tubular body 102 to prevent the tubular component 10 from shaking, and the first tube clamp 13 is provided on the curved tubular body 102 to make it more firmly installed. In some examples, the two ends of the first tube clamp 13 can be snap-fit ​​structures, and the two ends of the first tube clamp 13 are respectively snapped into the two tubular components 10, and the snap-fit ​​structure is made of a material that can be slightly deformed. In other examples, the two ends of the first tube clamp 13 can also be fixed by a connector 14, and the end of the first tube clamp 13 is arranged around the tubular component 10, and the end is fixed by the connector 14, so that the two ends of the first tube clamp 13 are firmly sleeved on the tubular component 10, and the connector 14 can be a bolt, and the specific bolt type is not limited, and it can fix the first tube clamp 13 on the tubular component 10.

[0032] Specifically, Figures 3 to 5 As shown, a second pipe clamp 15 is provided at the first end of the tubular component 10 below the first plug 07. The second pipe clamp 15 is sleeved on the outside of the tubular component 10. The second pipe clamp 15 is provided with a mounting block 151 connected to the mounting seat 05 to fix the second pipe clamp 15 to the bottom of the mounting seat 05. In the previous mature design, the solenoid valve 4 is provided at the first plug 07, and the connection between the tubular component 10 and the mounting seat 05 below it often becomes loose, resulting in water leakage. The second pipe clamp 15 is provided here to fix the tubular component 10 to the mounting seat 05, which can effectively avoid the loosening phenomenon and make the device more solid as a whole.

[0033] Those skilled in the art will appreciate that numerous variations to the above description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0034] Although exemplary embodiments of the present invention have been described and described, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt specific situations to the teachings of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments and their equivalents that fall within the scope of the present invention.

Claims

1. A urea injection device suitable for agricultural engines, characterized in that: It comprises a sensor module, a urea liquid return pipe, an electronic sleeve, a mounting seat, a shell, a first plug, a second plug and a support assembly; the mounting seat is arranged on the lower end surface of the shell, the first plug is arranged at the solenoid valve mounting hole on the upper end surface thereof, and the second plug is arranged at the cooling water inlet and the cooling water outlet on the side thereof; the sensor module is arranged at a certain distance below the shell; the urea liquid return pipe and the electronic sleeve are vertically arranged between the shell and the sensor module, and the support assembly is arranged around the urea liquid return pipe and the electronic sleeve along the axial direction thereof, and the support assembly is two vertically arranged tubular components, the first ends of the two tubular components are arranged on the bottom surface of the mounting seat, and the other ends are connected together, and the spiral tube body is arranged near the sensor module, and a card block is arranged on the spiral tube body to fix the spiral tube body to the sensor module.

2. The urea injection device suitable for agricultural engines according to claim 1, characterized in that: A float liquid level sensor is arranged on the electronic sleeve, and at least one vertically arranged tubular component is arranged to be a curved tubular body near the float liquid level sensor.

3. The urea injection device suitable for agricultural engines according to claim 2, characterized in that: A first pipe clamp is arranged in the middle of the two tubular components, and two ends of the first pipe clamp are respectively connected to the two tubular components to fix the two tubular components together, and the first pipe clamp is sleeved on the curved tube body.

4. The urea injection device suitable for agricultural engines according to claim 3, characterized in that: Both ends of the first tube clamp are buckle structures, and the two ends of the first tube clamp are respectively buckled into the two tubular components, and the buckle structures are made of a material that can be slightly deformed.

5. The urea injection device suitable for agricultural engines according to claim 3, characterized in that: Both ends of the first pipe clamp are fixed by connecting pieces, and the ends of the first pipe clamp are arranged around the tubular component and fixed by connecting pieces.

6. The urea injection device suitable for agricultural engines according to claim 5, characterized in that: The connecting piece is a bolt.

7. The urea injection device suitable for agricultural engines according to claim 1, characterized in that: The number of spirals of the spiral tube is set to 2 or 3.

8. The urea injection device suitable for agricultural engines according to claim 1, characterized in that: A second pipe clamp is provided at the first end of the tubular component below the first plug. The second pipe clamp is sleeved outside the tubular component. A mounting block connected to the mounting seat is provided on the second pipe clamp to fix the second pipe clamp to the bottom of the mounting seat.

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