Water return pipeline structure of engine

Abstract

The utility model relates to the field of engine cooling systems, in particular to an engine water return pipeline structure which comprises a water pump water inlet pipe, a warm air water return pipe connector arranged on the water pump water inlet pipe and a urea box heating and urea nozzle cooling water return pipe connector arranged on the water pump water inlet pipe. End caps are arranged at the end parts of the warm air water return pipe joint and the urea box heating and urea nozzle cooling water return pipe joint; and a plurality of sections of cavities for sleeving different water return pipe joints are arranged in the plug along the same axial direction. According to the utility model, the plugging effect of joints of different types can be met, and various water return pipelines are combined into one type, so that the types of the water return pipelines are greatly reduced. And meanwhile, the problems that similar parts are too many in variety and difficult in technical management are solved, the production and use efficiency is improved, the risk that the parts are mistakenly installed is avoided, and the requirements for simplifying the whole vehicle design scheme and standardizing the parts are met.

Description

Technical Field

[0001] The utility model relates to the field of engine cooling systems, in particular to the structural design of water inlet and return pipes, and in particular to an engine water return pipe structure. Background Art

[0002] With the continuous upgrading of environmental protection regulations, the share of National IV stage engines in the agricultural machinery market is increasing. Compared with National III engines, National IV engines have added a post-processing system. In addition to meeting the original warm air return requirements, the cooling system has added requirements for urea tank heating return and urea nozzle cooling return. At the same time, with the requirements of vehicle model upgrades, in addition to the previous return to the main return pipeline, the warm air return has also added an independent return method. Therefore, there are many different requirements for the layout design of the return port on the water pump inlet pipe, resulting in an exponential increase in the types of water pump inlet pipe parts, and there are also certain difficulties in front assembly distinction. Utility Model Content

[0003] The purpose of the utility model is to provide a solution for simplifying the types of water pump inlet pipes, striving to concentrate different return water requirements into a water pump inlet pipe structure solution, greatly reducing the types of water pump inlet pipe parts, reducing technical management costs, facilitating user selection, and avoiding the risk of incorrect installation during production and assembly.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides an engine return water pipeline structure, including a water pump inlet pipe, a warm air return water pipe joint arranged on the water pump inlet pipe, and a urea tank heating and urea nozzle cooling return water pipe joint arranged on the water pump inlet pipe, the warm air return water pipe joint and the urea tank heating and urea nozzle cooling return water pipe joint ends are both provided with plugs; the inside of the plug is provided with multiple sections of cavities for sleeved different return water pipe joints along the same axial direction.

[0005] Preferably, one end of the plug is open and the other end is a hemispherical protrusion.

[0006] Preferably, the plug is made of elastic material.

[0007] Preferably, the plug is made of rubber.

[0008] Preferably, a throat clamp for fixation is provided on the outer periphery of the plug.

[0009] In summary, the utility model includes the following beneficial technical effects:

[0010] The utility model can meet the blocking function of different types of joints and merge multiple return pipes into one, greatly reducing the types of return pipes. The optimization scheme of the engine return pipe solves the problem of too many types of similar parts and difficult technical management. At the same time, it also improves production and use efficiency, avoids the risk of wrong parts installation, and meets the requirements of simplified vehicle design and standardized parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an engine water return pipe structure of the utility model when a water return pipe joint rubber plug is not installed;

[0012] Figure 2 It is a structural schematic diagram of an engine water return pipe structure of the utility model when a water return pipe joint rubber plug is installed;

[0013] Figure 3 It is a three-dimensional schematic diagram of a rubber plug for a water return pipe joint in a water return pipe structure of an engine according to the utility model;

[0014] Figure 4 It is a cross-sectional view of a rubber plug of a water return pipe joint in a water return pipe structure of an engine according to the utility model;

[0015] Figure 5 The utility model is a cross-sectional view of an engine water return pipeline structure.

[0016] Figure numerals: 1. water pump inlet pipe; 2. warm air return pipe joint; 3. urea tank heating and urea nozzle cooling return pipe joint; 4. return pipe joint rubber plug; 5. throat clamp. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments 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 creative work are within the scope of protection of the utility model.

[0018] The utility model embodiment discloses an engine water return pipeline structure, which comprises a water pump inlet pipe 1, on which a warm air water return pipe joint 2 and a urea tank heating and urea nozzle cooling water return pipe joint 3 are arranged, and both the warm air water return pipe joint 2 and the urea tank heating and urea nozzle cooling water return pipe joint 3 are provided with a water return pipe joint rubber plug 4, and a throat clamp 5 for fixing the water return pipe joint rubber plug 4 is provided.

[0019] The utility model arranges all the required warm air return pipe joints 2, urea tank heating and urea nozzle cooling return pipe joints 3, etc. on the water pump inlet pipe 1. Through the variable return pipe joint rubber plug 4, all joints can be blocked and can be removed when needed, simplifying the types of water pump inlet pipe 1. Among them, the warm air return pipe joint 2, urea tank heating and urea nozzle cooling return pipe joint 3 are joints that meet different return water requirements, castings, fixed on the water pump inlet pipe 1; the return pipe joint rubber plug 4 is a variable diameter design, a rubber part, which can be fixed and locked according to different joint diameter requirements and installed at the return pipe joint.

[0020] The water pump inlet pipe 1 is provided with different parts such as a warm air return pipe joint 2, a urea tank heating and urea nozzle cooling return pipe joint 3 according to user needs. The current solution is a water pump inlet pipe 1 solution, in which different return water joints are installed on the pipeline, and a return water pipe joint rubber plug 4 with a variable diameter is added. The return water pipe joint rubber plug 4 can be adjusted and fixedly installed according to different joint diameters.

[0021] Since there are 2 to 3 main specifications of return pipe joints on the agricultural engine market, it can be seen from the cross-sectional view that the return pipe joint rubber plug 4 is internally arranged with two levels of different diameters to meet the design requirements of sealing two different specifications of return pipe joints (if necessary, the plug can be increased to three levels).

[0022] The return pipe joint rubber plug 4 is used in actual work. According to the different diameters of the return pipe joints 2 and 3, the return pipe joint rubber plug 4 can be fixed at different positions respectively, and fastened by the throat clamp 5 to meet the variable diameter design requirements of the plug.

[0023] The utility model discloses an optimized design scheme for the return water pipeline of an agricultural engine. The warm air return water pipe joint 2 and the urea tank heating and urea nozzle cooling return water pipe joint 3 are respectively arranged at different parts of the water pump inlet pipe 1. Due to different actual needs, the types of return water pipes have increased exponentially. The newly designed variable diameter return water pipe joint rubber plug 4 can meet the plugging effect of different types of joints and merge multiple return water pipes into one, greatly reducing the types of return water pipes. The optimized scheme for the engine return water pipeline solves the problem of too many types of similar parts and difficult technical management. At the same time, it also changes the production and use efficiency, avoids the risk of wrong installation of parts, and meets the requirements of simplified vehicle design and standardized parts.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine water return pipeline structure, characterized in that: The invention comprises a water pump inlet pipe (1), a warm air return pipe joint (2) arranged on the water pump inlet pipe (1), and a urea tank heating and urea nozzle cooling return pipe joint (3) arranged on the water pump inlet pipe (1); plugs are provided at the ends of the warm air return pipe joint (2) and the urea tank heating and urea nozzle cooling return pipe joint (3); and a plurality of cavities for sleeve-mounting different return pipe joints are provided inside the plug along the same axial direction.

2. The engine water return pipeline structure according to claim 1, characterized in that: One end of the plug is open, and the other end is hemispherical.

3. The engine water return pipeline structure according to claim 1, characterized in that: The plug is made of elastic material.

4. The engine water return pipeline structure according to claim 3, characterized in that: The plug is made of rubber.

5. The engine water return pipeline structure according to claim 1, characterized in that: A throat clamp (5) for fixing is arranged on the outer periphery of the plug.

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