Pipeline structure for engine water pump, water pump and diesel engine

Abstract

The utility model discloses a pipeline structure used for an engine water pump, a water pump and a diesel engine, the pipeline structure used for the engine water pump comprises a pipeline main body and at least one water return pipe, the water return pipe is connected with the pipeline main body, one of the water return pipe and the pipeline main body is provided with an insertion channel, and the insertion channel is communicated with the pipeline main body. A clamping structure is arranged on the other one of the water return pipe and the pipeline main body, and the clamping structure is matched in the inserting channel. According to the pipeline structure, the assembly difficulty of the pipeline main body and the water return pipe is reduced, so that the installation efficiency of the pipeline main body and the water return pipe is improved, and the production efficiency of the pipeline structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a pipeline structure for an engine water pump, a water pump and a diesel engine. Background Art

[0002] Water pumps are widely used in the vehicle industry for engine cooling. However, the installation of the main pipe and the return branch pipe in the water pump is complicated, which makes the installation time of the main pipe and the return branch pipe long and the installation efficiency low, thus reducing the installation efficiency of the main pipe and the return branch pipe. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a pipeline structure for an engine water pump, which reduces the difficulty of assembling the pipeline body and the return pipe, thereby helping to improve the installation efficiency of the pipeline body and the return pipe, and further improves the production efficiency of the pipeline structure.

[0004] Another object of the utility model is to provide a water pump adopting the above pipeline structure.

[0005] Another object of the present utility model is to provide a diesel engine using the water pump.

[0006] According to the first aspect of the utility model, the pipeline structure for an engine water pump includes: a pipeline main body; at least one return pipe, the return pipe is connected to the pipeline main body, a plug-in channel is formed on one of the return pipe and the pipeline main body, and a clamping structure is provided on the other of the return pipe and the pipeline main body, and the clamping structure is fitted in the plug-in channel.

[0007] According to the pipeline structure for an engine water pump of the utility model, the pipeline main body and the return pipe are coordinated with the clamping structure and the plug-in channel, which reduces the difficulty of assembling the pipeline main body and the return pipe, thereby helping to improve the installation efficiency of the pipeline main body and the return pipe, and further improving the production efficiency of the pipeline structure.

[0008] According to some embodiments of the utility model, the pipeline body has a connecting section extending away from the center of the pipeline body, the plug-in channel is formed on the connecting section, the plug-in channel runs through both ends of the connecting section in the length direction, and the clamping structure extends into the plug-in channel and is connected to the connecting section.

[0009] According to some embodiments of the utility model, the clamping structure includes a first clamping section and a second clamping section connected to each other, the first clamping section is located at one end of the second clamping section adjacent to the center of the pipeline body, and a first step portion is defined between the first clamping section and the second clamping section; the plug-in channel includes a first channel section and a second channel section, the first channel section is connected between the second channel section and the pipeline body, the first clamping section is fitted in the first channel section, the second clamping section is fitted in the second channel section, a second step portion is defined between the first channel section and the second channel section, and the first step portion and the second step portion abut against each other to limit the movement of the return pipe relative to the pipeline body toward and away from the pipeline body.

[0010] According to some embodiments of the present invention, along the axial direction of the plug-in channel toward a direction away from the pipeline body, the outer circumferential cross-sectional area of ​​the first step portion gradually decreases, and the inner circumferential cross-sectional area of ​​the second step portion gradually decreases.

[0011] According to some embodiments of the present invention, the outer cross-sectional area of ​​the first clamping section is larger than the outer cross-sectional area of ​​the second clamping section, and the inner cross-sectional area of ​​the first channel section is larger than the inner cross-sectional area of ​​the second channel section.

[0012] According to some embodiments of the present invention, the first clamping section is an elastic member.

[0013] According to some embodiments of the present invention, a sealing member is provided between the second channel section and the second clamping section.

[0014] According to some embodiments of the utility model, the clamping structure further includes a third clamping section, which is connected to the end of the second clamping section away from the first clamping section, and the outer peripheral cross-sectional area of ​​the third clamping section is larger than the outer peripheral cross-sectional area of ​​the second clamping section; the insertion channel further includes a third channel section, which is connected to the end of the second channel section away from the first channel section, and the inner peripheral cross-sectional area of ​​the third channel section is larger than the inner peripheral cross-sectional area of ​​the second channel section, and the third clamping section fits in the third channel section.

[0015] According to some embodiments of the utility model, the pipeline body includes: a first main body section, one end of which has an inlet; a second main body section, the second main body section is connected to the other end of the first main body section, and the central axis of the second main body section does not coincide with the central axis of the first main body section; a third main body section, one end of the third main body section is connected to an end of the second main body section away from the first main body section, the other end of the third main body section has an outlet, and the central axis of the third main body section does not coincide with the central axis of the second main body section.

[0016] According to some embodiments of the present invention, the angle between the central axis of the first main body segment and the central axis of the second main body segment is α, and the angle between the central axis of the second main body segment and the central axis of the third main body segment is β, wherein α and β respectively satisfy: 0°<α<90°, 0°<β<90°.

[0017] The water pump according to the embodiment of the second aspect of the utility model comprises the pipeline structure for the engine water pump according to the embodiment of the first aspect of the utility model.

[0018] The diesel engine according to the embodiment of the third aspect of the utility model comprises the water pump according to the embodiment of the second aspect of the utility model.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a pipeline structure according to an embodiment of the utility model;

[0022] Figure 2 is a partial cross-sectional view of a pipeline structure according to an embodiment of the utility model;

[0023] Figure 3 yes Figure 2 An enlarged view of the circled section A.

[0024] Reference numerals:

[0025] 100. Pipeline structure;

[0026] 1. Pipeline body; 11. Connecting section; 111. Plug-in channel;

[0027] 1111, first channel section; 1112, second channel section; 1113, third channel section;

[0028] 1114, second step portion; 12, first main body section; 121, inlet;

[0029] 13. Second main body section; 14. Third main body section; 141. Exit; 15. Passage;

[0030] 2. Return pipe; 21. Snap-on structure;

[0031] 211, first engaging section; 212, second engaging section; 213, third engaging section;

[0032] 214. first step portion; 22. sealing member; 23. gasket;

[0033] 3. Warm air return pipe. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 3 A pipeline structure 100 for an engine water pump according to an embodiment of the first aspect of the utility model is described.

[0035] like Figure 1-Figure 3 As shown, a pipeline structure 100 for an engine water pump according to an embodiment of the first aspect of the utility model comprises a pipeline body 1 and at least one water return pipe 2 .

[0036] Specifically, the return pipe 2 is connected to the pipeline body 1, and a plug-in channel 111 is formed on one of the return pipe 2 and the pipeline body 1, and a clamping structure 21 is provided on the other of the return pipe 2 and the pipeline body 1, and the clamping structure 21 fits in the plug-in channel 111. For example, the arrangement of the plug-in channel 111 and the clamping structure 21 includes the following situations: First, the plug-in channel 111 is formed on the return pipe 2, and the clamping structure 21 is provided on the pipeline body 1 (not shown in the figure). Second, the plug-in channel 111 is formed on the pipeline body 1, and the clamping structure 21 is provided on the return pipe 2 (such as Figure 2 and Figure 3As shown). With such a configuration, compared with the conventional technology of connecting the return pipe to the pipeline body through a threaded port, the clamping structure 21 cooperates with the plug-in channel 111, which facilitates the assembly of the pipeline body 1 and the return pipe 2, thereby reducing the difficulty of assembling the pipeline body 1 and the return pipe 2, helping to shorten the assembly time of the pipeline body 1 and the return pipe 2, and improving the installation efficiency of the return pipe 2 and the pipeline body 1, thereby improving the production efficiency of the pipeline structure 100. Among them, the clamping structure 21 cooperates with the plug-in channel 111, and compared with the threaded port connection in the conventional technology, the installation time is shortened by 1 / 3 of a cycle ("cycle" refers to the time used for the threaded port connection in the conventional technology).

[0037] According to the pipeline structure 100 for an engine water pump of the utility model, the assembly of the pipeline main body 1 and the return pipe 2 is reduced in difficulty through the cooperation of the clamping structure 21 and the plug-in channel 111, thereby helping to improve the installation efficiency of the pipeline main body 1 and the return pipe 2, and further improving the production efficiency of the pipeline structure 100.

[0038] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The pipeline body 1 has a connecting section 11 extending away from the center of the pipeline body 1, and a plug-in channel 111 is formed on the connecting section 11. The plug-in channel 111 runs through the length direction of the connecting section 11 (such as Figure 2 At both ends of the left and right directions in the middle, the clamping structure 21 extends into the insertion channel 111 and is connected to the connecting section 11. For example, Figure 2 and Figure 3 In the example, the right end of the connecting section 11 is connected to the outer peripheral surface of the pipeline body 1, the left end of the connecting section 11 extends away from the center of the pipeline body 1, the plug-in channel 111 runs through the left and right ends of the connecting section 11, the plug-in channel 111 is connected to the channel 15 formed in the pipeline body 1, and the clamping structure 21 is provided on the return pipe 2. In this way, the return pipe 2 can be connected to the pipeline body 1 through the connecting section 11, thereby lengthening the connection length between the pipeline body 1 and the return pipe 2, preventing the return pipe 2 from falling off from the pipeline body 1, thereby improving the stability of the connection between the pipeline body 1 and the return pipe 2, and improving the use stability of the pipeline structure 100.

[0039] According to some embodiments of the present invention, referring to Figure 2 and Figure 3The clamping structure 21 includes a first clamping section 211 and a second clamping section 212 connected to each other. The first clamping section 211 is located at one end of the second clamping section 212 adjacent to the center of the pipeline body 1. A first step portion 214 is defined between the first clamping section 211 and the second clamping section 212. The plug-in channel 111 includes a first channel section 1111 and a second channel section 1112. The first channel section 1111 is connected between the second channel section 1112 and the pipeline body 1. The first clamping section 211 fits in the first channel section 1111, and the second clamping section 212 fits in the second channel section 1112. A second step portion 1114 is defined between the first channel section 1111 and the second channel section 1112. The first step portion 214 and the second step portion 1114 abut against each other to limit the movement of the return pipe 2 relative to the pipeline body 1 toward away from the pipeline body 1.

[0040] For example, in Figure 2 and Figure 3 In the example, the first clamping section 211 and the second clamping section 212 are arranged in sequence from right to left, the right end of the first clamping section 211 is connected to the pipeline body 1, and the left end of the first clamping section 211 is connected to the right end of the second clamping section 212. The first channel section 1111 and the second channel section 1112 are arranged in sequence from right to left, the right end of the first channel section 1111 is connected to the pipeline body 1, and the left end of the first channel section 1111 is connected to the right end of the second channel section 1112. With such a configuration, the second step portion 1114 has a limiting effect on the first step portion 214, limiting the leftward movement of the return pipe 2, so that after the clamping structure 21 is matched with the plug-in channel 111 of the connecting section 11, the clamping structure 21 and the connecting section 11 are connected as a whole, and are not easy to fall off from the plug-in channel 111, thereby strengthening the assembly stability of the clamping structure 21 and the connecting section 11, and further improving the assembly stability of the pipeline body 1 and the return pipe 2. In addition, the clamping structure 21 and the plug-in channel 111 are simple in structure and easy to produce, thereby improving the production efficiency of the clamping structure 21 and the plug-in channel 111 and reducing the production cost. Moreover, the installation difficulty of the clamping structure 21 and the plug-in channel 111 is also reduced, thereby improving the installation convenience of the clamping structure 21 and the plug-in channel 111.

[0041] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 Along the axial direction of the insertion channel 111 toward the direction away from the pipeline body 1, the outer cross-sectional area of ​​the first step portion 214 gradually decreases, and the inner cross-sectional area of ​​the second step portion 1114 gradually decreases. Figure 2 and Figure 3In the example, from right to left, the outer cross-sectional area of ​​the first step portion 214 gradually decreases, and the inner cross-sectional area of ​​the second step portion 1114 gradually decreases. The outer peripheral surface of the first step portion 214 and the inner peripheral surface of the second step portion 1114 are both formed as inclined surfaces, and the outer peripheral surface of the first step portion 214 and the inner peripheral surface of the second step portion 1114 are parallel. Therefore, during the assembly process of the clamping structure 21 and the connecting section 11, it is convenient for the clamping structure 21 to be inserted into the plug-in channel 111, which improves the smoothness of the insertion of the clamping structure 21 into the plug-in channel 111, thereby further improving the installation efficiency of the clamping structure 21 and the connecting section 11. In addition, after the clamping structure 21 is inserted into the plug-in channel 111, it is convenient for the second step portion 1114 to limit the first step portion 214, thereby facilitating the stable assembly of the clamping structure 21 and the plug-in channel 111. In addition, when a pulling force is provided to the return pipe 2 in a direction away from the pipeline body 1, it is also convenient to pull the clamping structure 21 out of the insertion channel 111, thereby improving the disassembly efficiency of the clamping structure 21 and the connecting section 11, and further improving the disassembly efficiency of the return pipe 2 and the pipeline body 1.

[0042] According to some embodiments of the present invention, referring to Figure 3 , the outer cross-sectional area of ​​the first clamping section 211 is greater than the outer cross-sectional area of ​​the second clamping section 212, and the inner cross-sectional area of ​​the first channel section 1111 is greater than the inner cross-sectional area of ​​the second channel section 1112. As a result, it is convenient to form the first step portion 214 at the connection between the first clamping section 211 and the second clamping section 212, which helps to improve the formation of the first step portion 214, thereby improving the production efficiency of the clamping structure 21. In addition, it is convenient to form the second step portion 1114 at the connection between the first channel section 1111 and the second channel section 1112, which helps to improve the formation of the second step portion 1114, thereby improving the production efficiency of the plug-in channel 111. In addition, the adaptability of the assembly of the first clamping section 211 and the first channel section 1111 is improved, and the adaptability of the assembly of the second clamping section 212 and the second channel section 1112 is improved, thereby further effectively improving the adaptability of the assembly of the clamping structure 21 and the plug-in channel 111, improving the assembly stability of the pipeline main body 1 and the return pipe 2, and thereby improving the use performance of the pipeline structure 100.

[0043] According to some embodiments of the utility model, the first clamping section 211 is an elastic member. In the process of inserting the clamping structure 21 into the plug-in channel 111 from left to right, the first clamping section 211 of the clamping structure 21 first passes through the second channel section 1112, and then the first clamping section 211 is inserted into the first channel section 1111. In this way, the elastic member has elasticity, and the first clamping section 211 is easy to deform, which is conducive to the first clamping section 211 smoothly passing through the second channel section 1112 and then inserting into the first channel section 1111, thereby improving the assembly efficiency of the clamping structure 21 and the plug-in channel 111. In addition, after the first clamping section 211 is inserted into the first channel section 1111, the first clamping section 211 can be restored to its original state, so that the second step portion 1114 and the first step portion 214 stop, so that the first clamping section 211 can be stably matched in the first channel section 1111.

[0044] According to some embodiments of the present invention, referring to Figure 3 A sealing member 22 is provided between the second channel section 1112 and the second clamping section 212. Figure 3 In the example, the seal 22 is annular, and the seal 22 can be set as a sealing ring. The seal 22 is sleeved on the outer peripheral surface of the second clamping section 212, and the seal 22 is located at the inner wall surface of the second channel section 1112. The outer peripheral surface of the seal 22 and the inner wall surface of the second channel section 1112 are interference fit, and the inner peripheral surface of the seal 22 and the outer peripheral surface of the second clamping section 212 are interference fit. In the process of assembling the clamping structure 21 and the plug-in channel 111, the seal 22 is squeezed by the second channel section 1112 and the second clamping section 212, and a tight sealing ring is formed. In this way, the seal 22 fills the gap between the second channel section 1112 and the second clamping section 212, and improves the sealing of the assembly of the clamping structure 21 and the plug-in channel 111, so that when the fluid (such as liquid or gas) passes through the connecting section 11, the fluid leakage can be prevented, thereby improving the air tightness of the pipeline structure 100. In addition, the sealing member 22 can effectively ensure the sealing performance of the assembly between the return pipe 2 and the pipeline body 1 while improving the assembly efficiency of the pipeline structure 100 .

[0045] Optionally, the seal 22 may be a rubber member or a silicone member. Both rubber and silicone have good sealing properties and corrosion resistance, which is beneficial to improving the sealing effect of the seal 22 and extending the service life of the seal 22 .

[0046] According to some embodiments of the present invention, referring to Figure 3The clamping structure 21 further includes a third clamping section 213, which is connected to one end of the second clamping section 212 away from the first clamping section 211, and the outer cross-sectional area of ​​the third clamping section 213 is greater than the outer cross-sectional area of ​​the second clamping section 212. The insertion channel 111 further includes a third channel section 1113, which is connected to one end of the second channel section 1112 away from the first channel section 1111, and the inner cross-sectional area of ​​the third channel section 1113 is greater than the inner cross-sectional area of ​​the second channel section 1112, and the third clamping section 213 is fitted in the third channel section 1113.

[0047] For example, in Figure 3 In the example, the right end of the third clamping section 213 is connected to the left end of the second clamping section 212, and the right end of the third channel section 1113 is connected to the left end of the second channel section 1112. In this way, the third clamping section 213 can limit the movement of the second channel section 1112 toward the first clamping section 211, avoiding excessive extrusion of the first clamping section 211 and the inner wall of the first channel section 1111. In addition, the contact area between the return pipe 21 and the connecting section 11 is increased, thereby further improving the assembly stability of the clamping structure 21 and the plug-in channel 111, and further improving the assembly stability of the return pipe 2 and the pipeline body 1. In addition, the adaptability of the third clamping section 213 and the third channel section 1113 is improved.

[0048] Optionally, refer to Figure 3 A gasket 23 is provided between the third channel section 1113 and the second channel section 1112. The gasket 23 is generally in a ring structure. The right side of the gasket 23 is connected to the left side of the second channel section 1112, the left side of the gasket 23 is connected to the right side of the third channel section 1113, and the inner side wall of the gasket 23 abuts against the outer peripheral surface of the second clamping section 212. Such a configuration further strengthens the sealing performance of the assembly of the clamping structure 21 and the plug-in channel 111, thereby further preventing the fluid from leaking from the connection between the return pipe 2 and the pipeline body 1, and improving the airtightness of the pipeline structure 100.

[0049] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The pipeline body 1 includes a first main body section 12 , a second main body section 13 and a third main body section 14 .

[0050] Specifically, one end of the first main body section 12 has an inlet 121, the second main body section 13 is connected to the other end of the first main body section 12, the central axis of the second main body section 13 does not coincide with the central axis of the first main body section 12, one end of the third main body section 14 is connected to the end of the second main body section 13 away from the first main body section 12, the other end of the third main body section 14 has an outlet 141, and the central axis of the third main body section 14 does not coincide with the central axis of the second main body section 13. For example, in Figure 1 and Figure 2 In the example, the central axis of the first main body section 12, the central axis of the second main body section 13 and the central axis of the third main body section 14 are not in the same plane. In other words, the pipeline body 1 is a non-straight pipe.

[0051] With such arrangement, compared with the straight pipe extending in the vertical direction in the conventional technology, the pipeline structure 100 in this solution can avoid the suspension bracket (not shown) provided in the diesel engine during installation, which is beneficial to the later installation of the pipeline structure 100, thereby improving the installation efficiency of the pipeline structure 100 and other components. In other words, by adjusting the angles of the first main section 12, the second main section 13 and the third main section 14 of the pipeline structure 100, the structure of the pipeline body 1 can be adjusted to avoid interference with the suspension bracket without affecting the efficiency of the fluid entering the water pump, and at the same time, it can also ensure that the strength requirements of various components of the water pump are met. In addition, in order to avoid the influence of the adjustment of the first main body section 12, the second main body section 13 and the third main body section 14 on the fluid inlet performance of the pipeline structure 100, the diameter of the inlet 121 is adjusted through experimental calculation, so that the fluid inlet effect of the pipeline structure 100 of the water pump reaches the best effect to meet the engine performance requirements, wherein the setting of the diameter of the inlet 121 is related to the displacement of the diesel engine, so that the diameter of the inlet 121 can be specifically set according to actual use to better meet the actual application. For example, the displacement of the diesel engine is 7 liters, and the diameter of the inlet 121 is 25mm. The displacement of the diesel engine is 13 liters, and the diameter of the inlet 121 is 63mm.

[0052] According to some embodiments of the present invention, referring to Figure 1, the angle between the central axis of the first main section 12 and the central axis of the second main section 13 is α, and the angle between the central axis of the second main section 13 and the central axis of the third main section 14 is β, wherein α and β respectively satisfy: 0°<α<90°, 0°<β<90°. For example, when the angle α between the central axis of the first main section 12 and the central axis of the second main section 13 is equal to 0°, it is not easy for the pipeline body 1 to avoid the suspension bracket of the diesel engine, thereby increasing the installation difficulty of the pipeline structure 100 and reducing the installation efficiency of the pipeline structure 100. When the angle α between the central axis of the first main section 12 and the central axis of the second main section 13 is greater than or equal to 90°, the smoothness of the flow of the fluid between the first main section 12 and the second main section 13 is reduced, thereby reducing the efficiency of the fluid entering the water pump, and further reducing the performance of the diesel engine. When the angle β between the central axis of the second main section 13 and the central axis of the third main section 14 is equal to 0°, it is difficult for the pipeline body 1 to avoid the suspension bracket of the diesel engine, thereby increasing the difficulty of installing the pipeline structure 100 and reducing the installation efficiency of the pipeline structure 100. When the angle β between the central axis of the second main section 13 and the central axis of the third main section 14 is greater than or equal to 90°, the smoothness of the flow of the fluid between the second main section 13 and the third main section 14 is reduced, thereby reducing the efficiency of the water pump to enter the fluid, and further reducing the performance of the diesel engine.

[0053] Thus, by setting the angle α between the central axis of the first main section 12 and the central axis of the second main section 13, and the angle β between the central axis of the second main section 13 and the central axis of the third main section 14 to respectively satisfy 0°<α<90°, 0°<β<90°, the structure of the pipeline body 1 is optimized, which is conducive to the pipeline body 1 avoiding the suspension bracket of the diesel engine, thereby reducing the installation difficulty of the pipeline structure 100 and improving the installation efficiency of the pipeline structure 100. In addition, the smoothness of the flow of the fluid between the first main section 12 and the second main section 13 is improved, and the smoothness of the flow of the fluid between the second main section 13 and the third main section 14 is improved, thereby improving the smoothness of the flow of the fluid in the pipeline body 1, which helps to improve the efficiency of the water pump to enter the fluid, and then improves the performance of the diesel engine. In addition, the reasonable layout of the pipeline structure 100 is conducive to meeting the functional requirements of the water pump.

[0054] Optionally, a side of the pipeline body 1 close to the outlet 141 is connected to a warm air return pipe 3, and the interior of the warm air return pipe 3 is connected to the channel 15. Therefore, when the pipeline structure 100 is used for a water pump, the combined effect of the warm air return pipe 3 and the return pipe 21 is conducive to the normal use of the water pump.

[0055] A water pump (not shown) according to an embodiment of the second aspect of the utility model comprises a pipeline structure 100 for a water pump according to the embodiment of the first aspect of the utility model.

[0056] According to the water pump of the utility model, by adopting the above-mentioned pipeline structure 100, the installation efficiency of the water pump is improved, which is beneficial to the use of the water pump.

[0057] A diesel engine (not shown) according to an embodiment of the third aspect of the utility model comprises a water pump according to an embodiment of the second aspect of the utility model.

[0058] According to the diesel engine of the utility model, by adopting the water pump, the installation efficiency of the diesel engine is improved.

[0059] Other structures and operations of the pipeline structure 100, the water pump and the diesel engine according to the embodiment of the utility model are well known to those skilled in the art and will not be described in detail here.

[0060] In the description of the present invention, it should be understood that the terms "center", "length", "left", "right", "vertical", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A piping structure for an engine water pump, characterized in that: include: Pipeline body; At least one return pipe is connected to the pipeline body, a plug-in channel is formed on one of the return pipe and the pipeline body, and a clamping structure is provided on the other of the return pipe and the pipeline body, and the clamping structure is fitted in the plug-in channel.

2. The pipeline structure for an engine water pump according to claim 1, characterized in that: The pipeline body has a connecting section extending away from the center of the pipeline body, the connecting section is formed with the plug-in channel, the plug-in channel runs through both ends of the connecting section in the length direction, and the clamping structure extends into the plug-in channel and is connected to the connecting section.

3. The pipeline structure for an engine water pump according to claim 2, characterized in that: The clamping structure comprises a first clamping section and a second clamping section connected to each other, the first clamping section is located at one end of the second clamping section adjacent to the center of the pipeline body, and a first step portion is defined between the first clamping section and the second clamping section; The plug-in channel includes a first channel section and a second channel section, the first channel section is connected between the second channel section and the pipeline body, the first clamping section is fitted in the first channel section, the second clamping section is fitted in the second channel section, a second step portion is defined between the first channel section and the second channel section, the first step portion and the second step portion abut against each other to limit the movement of the return pipe relative to the pipeline body toward and away from the pipeline body.

4. The pipeline structure for an engine water pump according to claim 3, characterized in that: Along the axial direction of the insertion passage toward a direction away from the pipeline body, the outer circumferential cross-sectional area of ​​the first step portion gradually decreases, and the inner circumferential cross-sectional area of ​​the second step portion gradually decreases.

5. The pipeline structure for an engine water pump according to claim 3, characterized in that: The outer cross-sectional area of ​​the first clamping section is larger than the outer cross-sectional area of ​​the second clamping section, and the inner cross-sectional area of ​​the first channel section is larger than the inner cross-sectional area of ​​the second channel section.

6. The pipeline structure for an engine water pump according to claim 3, characterized in that: The first clamping section is an elastic member.

7. The pipeline structure for an engine water pump according to claim 3, characterized in that: A sealing member is provided between the second channel section and the second clamping section.

8. The pipeline structure for an engine water pump according to claim 3, characterized in that: The clamping structure further comprises a third clamping section, the third clamping section is connected to an end of the second clamping section away from the first clamping section, and the outer peripheral cross-sectional area of ​​the third clamping section is greater than the outer peripheral cross-sectional area of ​​the second clamping section; The plug-in channel further includes a third channel section, which is connected to an end of the second channel section away from the first channel section, the inner circumferential cross-sectional area of ​​the third channel section is larger than the inner circumferential cross-sectional area of ​​the second channel section, and the third snap-on section fits in the third channel section.

9. The pipeline structure for an engine water pump according to claim 1, characterized in that: The pipeline body comprises: a first main body section, wherein one end of the first main body section has an inlet; a second main body segment, the second main body segment is connected to the other end of the first main body segment, and the central axis of the second main body segment does not coincide with the central axis of the first main body segment; A third main body segment, one end of which is connected to an end of the second main body segment away from the first main body segment, the other end of which has an outlet, and the central axis of the third main body segment does not coincide with the central axis of the second main body segment.

10. The pipeline structure for an engine water pump according to claim 9, characterized in that: The angle between the central axis of the first main body segment and the central axis of the second main body segment is α, and the angle between the central axis of the second main body segment and the central axis of the third main body segment is β, wherein α and β respectively satisfy: 0°<α<90°, 0°<β<90°.

11. A water pump, characterized in that: The invention comprises a piping structure for an engine water pump according to any one of claims 1 to 10.

12. A diesel engine, characterized in that: Comprising a water pump according to claim 11.

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