Air inlet pipeline structure of diesel engine

Abstract

The utility model discloses an air inlet pipeline structure of a diesel engine, which particularly relates to the technical field of diesel engines, and comprises an air filter, the air outlet end of the air filter is connected with a transmission pipe, the end part of the transmission pipe is connected with a supercharger, the end part of the supercharger is connected with a guide pipe, the air inlet end of the air filter is connected with an impurity removal mechanism, and the impurity removal mechanism is connected with a pipeline. The impurity removing mechanism comprises a main connecting pipe, the end portion of the main connecting pipe is connected with an auxiliary connecting pipe, the end portion of the auxiliary connecting pipe is connected with a protective shell, and one side of the protective shell is connected with an outer shell. The outer surfaces of the protective shell and the outer shell are inclined planes and arc surfaces, leaves and flaky impurities cannot be attached to the surfaces of the protective shell and the outer shell, the leaves and the flaky impurities cannot be accumulated on the outer surfaces of the protective shell and the outer shell, and the ventilation stability of the air inlet pipeline can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, and particularly relates to an intake pipeline structure of a diesel engine. Background Art

[0002] As an important power device, diesel engines are widely used in the fields of transportation, agricultural machinery, construction machinery, power generation equipment, etc. Their performance directly affects the working efficiency, reliability and environmental emission level of the equipment. Among the various components of a diesel engine, the intake pipeline structure has a crucial impact on the combustion efficiency, power output and emission characteristics of the engine.

[0003] The basic composition structure of the intake pipeline of a diesel engine includes an intake pipe, an air filter and an intercooler. The intake pipelines of some high-power diesel engines are also equipped with superchargers to increase the intake pressure. However, when existing diesel engines are used outdoors, impurities other than outdoor leaves or dust adhere to the surface of the air filter, which will cause the air intake of the air filter to be unsmooth, affect the air intake efficiency of the air filter, and cause the problem of unstable air intake of the diesel engine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an intake pipeline structure of a diesel engine to solve the above deficiencies in the technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An intake pipeline structure of a diesel engine includes an air filter. The air outlet end of the air filter is connected to a transmission pipe. The end of the transmission pipe is connected to a supercharger. The end of the supercharger is connected to a conduit. The air inlet end of the air filter is connected to an impurity removal mechanism. The impurity removal mechanism includes a main connection pipe. The end of the main connection pipe is connected to a sub-connection pipe. The end of the sub-connection pipe is connected to a protective shell. One side of the protective shell is connected to a housing. The surface of the protective shell is an inclined plane. The surface of the housing is an inclined plane and a curved surface.

[0007] Preferably, a filter pipe is arranged between the protective shell and the housing. A plurality of air holes are formed in the front surface of the filter pipe.

[0008] Preferably, the air filter includes a cylindrical barrel and a filter cartridge arranged inside the cylindrical barrel. One end of the cylindrical barrel is connected to the end of the main connection pipe by screw thread. The other end of the cylindrical barrel is provided with a bent pipe.

[0009] Preferably, a middle cooler is arranged at the end of the conduit. An input pipe is arranged at the air inlet end of the middle cooler. An outlet pipe is arranged at the air outlet end of the middle cooler. The end of the outlet pipe is connected to a drainage pipe. The end of the drainage pipe is connected to a pipe joint.

[0010] Preferably, a plurality of heat dissipation fins are fixed on the outer wall of the intercooler, and a fixing frame is also fixed on the outer wall of the intercooler.

[0011] Preferably, the contact surface between the protective shell and the outer shell is fixed by welding. A threaded hole is formed in one side of the protective shell, and the end of the auxiliary connecting pipe is threadedly engaged with the threaded hole.

[0012] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0013] Through the provided impurity removal mechanism, the impurity removal mechanism is connected to the intake end of the air filter. The outside of the impurity removal mechanism includes a protective shell and an outer shell. The outer surfaces of the protective shell and the outer shell are inclined surfaces and arc surfaces. Leaves and flaky impurities cannot adhere to the surfaces of the protective shell and the outer shell, and leaves and flaky impurities will not accumulate on the outer surfaces of the protective shell and the outer shell. Therefore, it will not cause blockage to the air filter or the intake pipeline, which is beneficial to improving the ventilation stability of the intake pipeline. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the air filter and the impurity removal mechanism of the present utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the air filter and the impurity removal mechanism of the present utility model;

[0018] Figure 4 It is an exploded view of the impurity removal mechanism of the present utility model.

[0019] Description of the Reference Numerals:

[0020] 1, intercooler; 2, fixing frame; 3, heat dissipation fin; 4, input pipe; 5, conduit; 6, supercharger; 7, transmission pipe; 8, air filter; 81, elbow; 82, filter cartridge; 9, protective shell; 91, main connecting pipe; 92, auxiliary connecting pipe; 93, outer shell; 94, filter pipe; 10, outlet pipe; 11, drainage pipe; 12, pipe joint. Detailed Embodiments

[0021] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] The present utility model provides a diesel engine intake pipe structure as shown in Figure 1 - Figure 4 Figure, which includes an air filter 8. The air outlet end of the air filter 8 is connected to a transmission pipe 7. The end of the transmission pipe 7 is connected to a supercharger 6. The end of the supercharger 6 is connected to a conduit 5. The air inlet end of the air filter 8 is connected to a impurity removal mechanism. The impurity removal mechanism includes a main connection pipe 91. The end of the main connection pipe 91 is connected to a sub-connection pipe 92. The end of the sub-connection pipe 92 is connected to a protective shell 9. One side of the protective shell 9 is connected to an outer shell 93. The surface of the protective shell 9 is an inclined surface. The surface of the outer shell 93 is an inclined surface and an arc surface. The contact surface between the protective shell 9 and the outer shell 93 is fixed by welding. One side of the protective shell 9 is provided with a threaded hole. The end of the sub-connection pipe 92 is threadedly engaged with the threaded hole.

[0023] In this embodiment, specifically, holes are provided on the surface of the outer shell 93. Air enters the outer shell 93 through the holes, then passes through the protective shell 9, then through the sub-connection pipe 92 and the main connection pipe 91, and then enters the interior of the air filter 8. After the air is discharged from the air filter 8, it passes through the transmission pipe 7. Under the action of the supercharger 6, the flow rate of the air is rapidly increased.

[0024] As shown in Figure 4 Figure, specifically, a filter pipe 94 is provided between the protective shell 9 and the outer shell 93. A plurality of air holes are provided on the front surface of the filter pipe 94; specifically, the air holes can filter out impurities in the air. Large particle impurities will not pass through the outer shell 93 and the protective shell 9, nor will they pass through the sub-connection pipe 92 and the main connection pipe 91 and enter the air filter 8.

[0025] As shown in Figure 1 - Figure 3 Figure, the air filter 8 includes a cylindrical barrel and a filter cylinder 82 arranged inside the cylindrical barrel. One end of the cylindrical barrel is threadedly engaged with the end of the main connection pipe 91. The other end of the cylindrical barrel is provided with a bent pipe 81;

[0026] Specifically, after the air passes through the main connection pipe 91, it enters the cylindrical barrel. The air passes through the filter cylinder 82. The filter cylinder 82 filters out dust and impurities in the air. The filtered air is then discharged through the bent pipe 81, then passes through the transmission pipe 7, and then through the supercharger 6. When the supercharger 6 is in working state, it can quickly accelerate the air flow rate, thereby pressurizing the air and discharging it from the conduit 5.

[0027] As shown in Figure 1As shown, an intercooler 1 is provided at the end of the conduit 5. An input pipe 4 is provided at the air inlet end of the intercooler 1, and an outlet pipe 10 is provided at the air outlet end of the intercooler 1. A drainage pipe 11 is connected to the end of the outlet pipe 10, and a pipe joint 12 is connected to the end of the drainage pipe 11;

[0028] A number of heat sinks 3 are fixed to the outer wall of the intercooler 1, and a fixing bracket 2 is also fixed to the outer wall of the intercooler 1;

[0029] In this embodiment, specifically, a diesel engine is generally installed in the front of the vehicle body, and the intercooler 1 is installed at the air intake grille position of the front. This part is prior art and will not be elaborated here. The function of the intercooler 1 is to reduce the temperature of the air supercharged by the supercharger 6, improve the charging efficiency and performance of the diesel engine. The heat sink 3 is used to absorb the heat of the air inside the intercooler 1 and then dissipate it into the air outside the intercooler 1, thereby achieving temperature dissipation.

[0030] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A diesel engine intake pipeline structure, comprising an air filter (8), characterized in that: The air outlet end of the air filter (8) is connected to a transmission pipe (7), the end of the transmission pipe (7) is connected to a supercharger (6), the end of the supercharger (6) is connected to a conduit (5), the air inlet end of the air filter (8) is connected to an impurity removal mechanism, the impurity removal mechanism includes a main connection pipe (91), the end of the main connection pipe (91) is connected to a sub-connection pipe (92), the end of the sub-connection pipe (92) is connected to a protective shell (9), one side of the protective shell (9) is connected to a housing (93), the surface of the protective shell (9) is an inclined surface, and the surface of the housing (93) is an inclined surface and a curved surface.

2. The intake pipe structure of a diesel engine according to claim 1, characterized in that: A filter pipe (94) is arranged between the protective shell (9) and the housing (93), and a plurality of air holes are formed in the front surface of the filter pipe (94).

3. The intake pipe structure of a diesel engine according to claim 1, characterized in that: The air filter (8) includes a cylindrical barrel and a filter cartridge (82) arranged inside the cylindrical barrel. One end of the cylindrical barrel is threadedly connected to the end of the main connection pipe (91), and the other end of the cylindrical barrel is provided with a bent pipe (81).

4. A diesel engine intake pipe structure according to claim 1, characterized in that: The end of the conduit (5) is provided with an intercooler (1), the air inlet end of the intercooler (1) is provided with an input pipe (4), the air outlet end of the intercooler (1) is provided with an outlet pipe (10), the end of the outlet pipe (10) is connected to a drainage pipe (11), and the end of the drainage pipe (11) is connected to a pipe joint (12).

5. A diesel engine intake pipe structure according to claim 4, characterized in that: A plurality of heat dissipation fins (3) are fixed on the outer wall of the intercooler (1), and a fixing frame (2) is also fixed on the outer wall of the intercooler (1).

6. A diesel engine intake pipe structure according to claim 1, characterized in that: The contact surface between the protective shell (9) and the housing (93) is fixed by welding. A threaded hole is formed in one side of the protective shell (9), and the end of the sub-connection pipe (92) is threadedly connected to the threaded hole.

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