Split type air inlet device

Abstract

The utility model discloses a split type air inlet device and a grain harvester, belongs to the technical field of agricultural machinery, aims to solve the problems of maintenance and air inlet efficiency of air filtering equipment, and comprises an air filtering mechanism and a prefilter, wherein the prefilter is mounted on the air filtering mechanism, and the air filtering mechanism is connected with an air inlet pipe of an engine; an air outlet of the prefilter is connected with an air inlet of the air filtering mechanism; an air inlet of the pre-filter is higher than a protective part of the radiator; an air outlet of the prefilter is connected with an air inlet of the air filtering mechanism and is used for primarily filtering airflow entering the engine; and finally, an air outlet of the air filtering mechanism is connected with an air inlet pipe of the engine and used for conducting secondary filtering on the air passing through the prefilter. The maintenance frequency of the air filter equipment of the harvester can be reduced, and the air inlet efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to a split-type air intake device and a grain harvester, belonging to the field of agricultural machinery equipment technology. Background Technology

[0002] Because combine harvesters operate under complex and harsh conditions, their engine intake systems are typically equipped with air filters to prevent dust from entering the engine. During use, a large amount of dust particles accumulate inside the air filter. Once this accumulation reaches a certain level, it can lead to increased intake resistance, decreased engine performance, and higher fuel consumption.

[0003] Secondly, when there is a lot of dust in the air, especially when harvesting dry wheat, the air filtration equipment will accumulate a lot of dust in a short period of time, causing the resistance alarm to be triggered and the machine to be forced to stop for cleaning, which seriously affects the harvesting speed.

[0004] In addition, timely dust removal and maintenance of air filtration equipment is necessary. However, existing filters cannot assess the amount of dust accumulation inside, and maintenance cycles can only be determined based on regular or fixed usage frequency. This type of maintenance cannot be flexibly applied to all harvesting conditions, making it difficult to dynamically adapt the filtration device to actual working conditions. This, to some extent, affects the performance and service life of the equipment. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to overcome the shortcomings of the prior art and provide a split-type air intake device and a grain harvester, which can reduce the maintenance frequency of air filtration equipment and improve air intake efficiency.

[0006] To solve the above-mentioned technical problems, this utility model is implemented using the following technical solution:

[0007] In a first aspect, this utility model provides a split-type air intake device, including an air filter mechanism disposed at the engine air intake pipe and a pre-filter connected to the air filter mechanism;

[0008] The pre-filter is located at the top of the air filtration mechanism, and the air inlet of the pre-filter is higher than the protective component of the radiator.

[0009] The pre-filter outlet is connected to the air inlet of the air filtration mechanism and is used to perform preliminary filtration on the airflow entering the engine.

[0010] The air outlet of the air filtration mechanism is connected to the engine intake pipe and is used to perform secondary filtration on the air passing through the pre-filter.

[0011] Optionally, the pre-filter is equipped with a filter screen at the air inlet to filter straw and large solid particles in the air;

[0012] The pre-filter has one or more ash discharge ports at its air outlet, which are used to connect to a dust collector or a self-collecting dust mechanism through dust removal pipes respectively.

[0013] The air filtration mechanism is equipped with a filter element for filtering fine dust.

[0014] Optionally, the self-cleaning mechanism is a negative pressure vacuuming assembly and / or a mechanical fan assembly disposed on the side of the engine.

[0015] Optionally, the mechanical fan assembly includes a dust extraction fan mounted on the outside of the engine and a transmission mechanism connected to the engine's power end;

[0016] The suction port of the dust collector is connected to the ash discharge port through a dust removal pipe.

[0017] Optionally, the transmission mechanism includes a first transmission wheel mounted on the engine power end, a first transmission belt connected to the first transmission wheel, a second transmission wheel connected to the other end of the transmission belt, a third transmission wheel connected to the second transmission wheel via a first transmission shaft, a second transmission belt fitted on the third transmission wheel, and a fourth transmission wheel connected to the second transmission belt.

[0018] The fourth drive wheel is connected to the dust extraction fan via the second drive shaft and is used to drive the dust extraction fan to rotate, thereby providing negative pressure airflow to the dust removal pipe.

[0019] Optionally, the negative pressure dust collection assembly includes an air collecting shroud connected to the end of the dust collection pipe and located on the heat sink side, and a cooling fan disposed on one side of the air collecting shroud.

[0020] Optionally, the air collector shroud has a conical structure, with the larger diameter end connected to the radiator and the smaller diameter end close to the negative pressure side of the cooling fan, used to provide negative pressure airflow to the air collector shroud.

[0021] Optionally, a limiting protrusion is provided on the outer diameter surface of the ash discharge port for connecting the sealing cover.

[0022] Secondly, this utility model provides a grain harvester, wherein the above-mentioned air intake device is provided at the engine air intake pipe.

[0023] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0024] By installing a combination of a pre-filter and an air filter mechanism at the engine intake manifold, with the pre-filter intake port higher than the radiator's protective component and mounted above the air filter mechanism, the amount of large particulate solids such as straw can be reduced, the frequency of air filtration equipment maintenance can be reduced, maintenance cycles can be extended, and intake efficiency can be improved.

[0025] The dust accumulated in the pre-filter is ejected by negative pressure from the engine fan and / or mechanical fan assembly at the ash discharge port, allowing for self-circulation and dust removal from the pre-filter, reducing cleaning frequency and improving harvester efficiency. Simultaneously, the dust accumulated in the pre-filter can also be discharged through dust removal equipment such as a dust collector connected to the ash discharge port, achieving an automatic cleaning effect. Attached Figure Description

[0026] Figure 1 The diagram shows the structure of the split-type air intake device of this utility model. Figure 1 ;

[0027] Figure 2 The diagram shows the structure of the split-type air intake device of this utility model. Figure 2 ;

[0028] Figure 3 The diagram shown is a structural schematic of the ash discharge port of this utility model;

[0029] Figure 4 The figure shown is an embodiment of the split-type air intake device of this utility model;

[0030] Figure 5 The figure shown is a second embodiment of the split-type air intake device of this utility model;

[0031] Figure 6 The diagram shown is a structural diagram of the transmission mechanism of the dust collector of this utility model.

[0032] In the diagram: 1-Engine, 10-Engine intake pipe, 11-Engine intake pipe, 2-Air filter mechanism, 20-Air filter mechanism outlet, 21-Air filter mechanism inlet, 22-Air filter mechanism dust collection port, 23-Connection port, 3-Pre-filter, 30-Pre-filter inlet, 31-Pre-filter outlet, 32-First dust discharge port, 33-Second dust discharge port, 34-Pipe, 35-Limiting protrusion, 36-Thread, 40-Dust collector fan, 41-First drive wheel, 42-First drive belt, 43-First drive shaft, 44-Second drive wheel, 45-Third drive wheel, 46-Second drive belt, 47-Suction port, 48-Second drive shaft, 49-Fourth drive wheel, 6-Dust collector pipe, 70-Radiator, 71-Air collection hood, 72-Cooling fan, 8-Dust collector Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example

[0034] This embodiment provides a split-type air intake device, such as Figure 1The system includes an air filter mechanism 2 and a pre-filter 3. The pre-filter 3 is mounted on top of the air filter mechanism 2, which is connected to the engine intake pipe 11. The pre-filter outlet 31 is connected to the air filter mechanism inlet 21. Furthermore, the pre-filter inlet is higher than the protective cover of the radiator 70. The pre-filter has a transparent plastic shell, allowing the operator to easily observe the dust accumulation on the pre-filter without needing to open the radiator 70 protective cover. The pre-filter outlet 31 is connected to the air filter mechanism inlet 21 for preliminary filtration of the airflow entering the engine 1. Finally, the air filter mechanism 2 outlet 20 is connected to the engine intake pipe 11 for secondary filtration of the air passing through the pre-filter 3.

[0035] Optionally, a filter screen is provided at the air inlet 30 of the pre-filter 3 to filter straw and large solid particles in the air;

[0036] The pre-filter outlet 31 is provided with a first ash discharge port 32 and a second ash discharge port 33, which are used to connect to the dust collector 8 or the self-collecting dust mechanism through the dust removal pipe 6 respectively. The dust collector 8 can select electric fans of different power according to the working conditions, which is highly adaptable. At the same time, in order to avoid cleaning the air filter mechanism 2 and the pre-filter 3 too frequently, an automatic dust removal device is added.

[0037] like Figure 2 and Figure 4 As shown, the pre-filter outlet 31 can be directly connected to the air inlet 21 of the air filter mechanism, or the pre-filter outlet 31 can be connected to the air inlet 21 of the air filter mechanism through the pipe 34. It can be modified accordingly according to the height and size of different agricultural machines, with a wide range of applications and convenient and flexible modification.

[0038] The air filter mechanism 2 is equipped with a filter element for filtering fine dust. In this embodiment, a combination of a pre-filter 3 and an air filter mechanism 2 is set at the engine intake pipe 11. The air inlet 30 of the pre-filter 3 is higher than the protective part of the radiator 70 and is installed on the air filter mechanism 2. This can reduce the amount of large solid particles such as straw, reduce the number of maintenance times of the air filtration equipment, extend the maintenance cycle, and improve the intake efficiency.

[0039] Optional, such as Figure 4 and Figure 5 The self-cleaning mechanism shown includes a negative pressure dust collection component or a mechanical fan component; the negative pressure dust collection component or the mechanical fan component is connected to the ash discharge port through the dust removal pipe 6 and can perform self-cleaning operations respectively;

[0040] The negative pressure dust collection component is installed on the radiator 70 side of the generator. After the cooling fan 72 is started, it inputs negative pressure into the dust collection hood and uses the cooling fan 72 to perform self-dust collection. The mechanical fan component is installed inside the engine 1 and uses the power of the engine 1 to drive the mechanical fan. In this embodiment, the dust accumulated in the pre-filter 3 is ejected by negative pressure through the engine 1 fan or mechanical fan component of the first ash discharge port 32 and the second ash discharge port 33, which self-circulates and discharges the dust from the pre-filter 3, reducing the number of cleaning times and improving the harvesting efficiency of the harvester.

[0041] Optional, such as Figure 6 As shown, the mechanical fan assembly includes: a dust extraction fan 40 and a transmission mechanism; the dust extraction fan 40 is installed on one side of the engine 1 casing, and the dust extraction fan 40 has a suction port 47 for connecting to the ash discharge port through the dust removal pipe 6 to provide negative pressure airflow to the ash discharge port; the transmission mechanism includes: a first transmission wheel 41, a first transmission belt 42, a first transmission shaft 43, a second transmission wheel 44, a third transmission wheel 45, a second transmission belt 46, a second transmission shaft 48, and a fourth transmission wheel 49.

[0042] The first drive wheel 41 is installed on the power end of the engine 1, the first drive belt 42 is connected to the first drive wheel 41, the second drive wheel 44 is connected to the other end of the drive belt, the first drive shaft 43 is installed inside the engine 1 and the third drive wheel 45 is connected to the second drive wheel 44 through the first drive shaft 43, the second drive belt 46 is fitted on the third drive wheel 45, and the fourth drive wheel 49 is connected to the second drive belt 46.

[0043] The fourth transmission wheel 49 is connected to the vacuum cleaner 40 via the second transmission shaft 48. The power output from the engine 1 drives the first transmission wheel 41 to rotate. The rotation of the first transmission wheel 41 drives the power to pass sequentially through the first transmission belt 42, the second transmission wheel 44, the first transmission shaft 43, the third transmission wheel 45, the second transmission belt 46, the fourth transmission wheel 49, and the second transmission shaft 48 to the vacuum cleaner 40, thereby driving the vacuum cleaner 40 to rotate and generating negative pressure air. This provides negative pressure airflow to the dust removal pipe 6, and the dust at the dust discharge port is continuously discharged to the suction port 47 of the vacuum cleaner 40 under the guidance of the negative pressure airflow.

[0044] Optional, such as Figure 5 The negative pressure dust collection assembly shown includes a dust collector shroud 71 and a cooling fan 72. The dust collector shroud 71 is connected to the end of the dust collection pipe 6 and is located on one side of the radiator 70. The cooling fan 72 is installed on one side of the dust collector shroud 71 and corresponds to the radiator 70. In this embodiment, the radiator 70 is installed on one side of the engine 1 using existing technology to cool the engine 1.

[0045] Optionally, the air collecting shroud 71 has a conical structure, with the larger diameter end connected to the radiator 70 and the smaller diameter end close to the negative pressure side of the cooling fan 72, which is used to provide negative pressure airflow to the air collecting shroud 71. The air collecting shroud 71 is also equipped with a port connected to the dust removal pipe 6, so that the negative pressure airflow in the air collecting shroud 71 is output to the dust removal pipe 6, so that the dust at the dust discharge port is continuously discharged to the suction port 47 of the dust extraction fan 40 under the guidance of the negative pressure airflow.

[0046] Optional, such as Figure 3 The outer diameter surface of the ash discharge port is provided with a limiting protrusion 35 and a thread 36 for connecting a sealing cover. The sealing cover can be used to seal the ash discharge port when the connection to the pipe 34 is not required for automatic dust removal, when the dust is small, or when the port is idle. The sealing cover can be opened periodically to clean the dust. If it is necessary to connect the dust removal pipe 6, the limiting protrusion 35 can be used to fix the pipe 34 to a certain extent.

[0047] Working principle:

[0048] The connection port 23 between the pre-filter 3 and the air filter mechanism 2 is locked with a locking clamp. At the same time, the engine intake pipe 11 is locked with the air outlet 20 of the air filter mechanism 2. The engine intake pipe 11 and the turbocharger intake port of the engine 1 are connected by the clamp. The pre-filter 3 is equipped with a protective net to block large solid particles. The bottom of the air filter mechanism 2 has a dust collection port 22 for cleaning the dust inside the air filter mechanism 2. One or more dust discharge ports of the pre-filter 3 are connected to the inside of the air collection hood 71 through the dust removal pipe 6. The air collection hood 71 has a conical structure and plays the role of collecting air. The large end is connected to the radiator 70 of the engine 1 through a sealing strip, and the small end faces the cooling fan 72.

[0049] When the grain harvester is in operation, the engine 1 is turned on and the cooling fan 72 is powered on and runs. The cooling fan 72 provides negative pressure airflow to the air collection hood 71, so that the negative pressure airflow in the air collection hood 71 is output to the dust removal pipe 6, so that the dust at the first ash outlet 32 ​​and the second ash outlet is continuously discharged to the suction port 47 of the dust suction fan 40 under the guidance of the negative pressure airflow. The pre-filter 3 is self-circulated to remove ash, reducing the number of cleaning times and improving the harvesting efficiency of the harvester.

[0050] Secondly, when the grain harvester is in operation, the engine 1 is turned on, and the power output of the engine 1 drives the first transmission wheel 41 to rotate. The rotation of the first transmission wheel 41 drives the power to pass sequentially through the first transmission belt 42, the second transmission wheel 44, the first transmission shaft 43, the third transmission wheel 45, the second transmission belt 46, the fourth transmission wheel 49, and the second transmission shaft 48 to the dust suction fan 40, thereby driving the dust suction fan 40 to rotate, thereby generating negative pressure air, and realizing the provision of negative pressure airflow to the dust removal pipe 6. The dust at the first ash discharge port 32 and the second ash discharge port is guided by the negative pressure airflow to the suction port 47 of the dust suction fan 40 for self-circulation ash removal of the pre-filter 3, reducing the number of cleaning times and improving the harvesting efficiency of the harvester.

[0051] Furthermore, if the grain harvester generates significant dust or if the self-circulating dust removal system is ineffective, cables can be laid along the grain harvester, and an electric dust collector 8 with sufficient power to meet the operating conditions can be connected to any of the dust discharge ports, offering strong adaptability. Example 2

[0052] This embodiment provides a split-type air intake device, based on the same technical concept as the previous embodiment, including an air filter mechanism and a pre-filter; wherein the pre-filter is installed on top of the air filter mechanism, and the air filter mechanism is connected to the engine intake pipe; the pre-filter outlet is connected to the air filter mechanism inlet; furthermore, the pre-filter inlet is higher than the radiator's protective component; the pre-filter is made of other transparent materials, which can directly monitor the dust accumulation on the pre-filter and determine whether the pre-filter and air filter need to be adjusted for maintenance; secondly, the pre-filter outlet is connected to the air filter mechanism inlet for preliminary filtration of the airflow entering the engine; finally, the air filter mechanism outlet is connected to the engine intake pipe for secondary filtration of the air passing through the pre-filter.

[0053] The pre-filter has one or more ash discharge ports at its air outlet, which are used to connect to a dust collector or a self-collecting dust mechanism through multiple dust collection pipes respectively.

[0054] Optionally, the self-cleaning mechanism includes a negative pressure suction component and a mechanical fan component; the cooling fan is an electric fan, and the mechanical fan component relies on the power of an engine. The technical concept of the mechanical fan component is the same as in Embodiment 1. Example

[0055] This embodiment provides a grain harvester, whose engine air intake pipe is equipped with the air intake device shown in Embodiments 1 and 2.

[0056] In summary, this utility model can set a combination of a pre-filter and an air filter mechanism at the engine intake pipe, and the pre-filter intake port is higher than the radiator protective part and installed on the air filter mechanism, which can reduce the amount of large solid particles such as straw; thereby reducing the number of maintenance times of the air filtration equipment, extending the maintenance cycle, and improving intake efficiency.

[0057] The dust accumulated in the pre-filter is ejected by negative pressure from the engine fan and / or mechanical fan assembly at the ash discharge port, allowing for self-circulation and dust removal from the pre-filter, reducing cleaning frequency and improving harvester efficiency. Simultaneously, the dust accumulated in the pre-filter can also be discharged through dust removal equipment such as a dust collector connected to the ash discharge port, achieving an automatic cleaning effect.

[0058] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A split intake device, characterized by, The application relates to an air filter device for a harvester engine, which comprises an air filter mechanism arranged at the air inlet pipe of the harvester engine and a pre-filter connected to the air filter mechanism. The pre-filter is made of transparent plastic shell, which is used for observing the dust accumulation of the pre-filter. The pre-filter is arranged at the top of the air filter mechanism, and the air inlet of the pre-filter is higher than the protective member of the radiator. The air outlet of the pre-filter is connected to the air inlet of the air filter mechanism, which is used for preliminarily filtering the air flow entering the engine. The air outlet of the air filter mechanism is connected to the air inlet pipe of the engine, which is used for secondarily filtering the air passing through the pre-filter. A filter screen is arranged at the air inlet of the pre-filter, which is used for filtering the straw and large particles in the air. More than one dust outlet is arranged at the air outlet of the pre-filter, which is connected to the dust collector or the self-suction dust mechanism through the dust removal pipe. The air filter mechanism is provided with a filter core, which is used for filtering the fine dust.

2. The split intake device of claim 1, wherein The self-suction dust mechanism is a negative pressure dust suction assembly and / or a mechanical fan assembly arranged at one side of the engine.

3. The split intake device of claim 2, wherein, The mechanical fan assembly comprises a dust suction fan arranged at the outer side of the engine and a transmission mechanism connected to the power end of the engine. The air suction port of the dust suction fan is connected to the dust outlet through the dust removal pipe.

4. The split intake device of claim 3, wherein, The transmission mechanism comprises a first transmission wheel arranged at the power end of the engine, a first transmission belt connected to the first transmission wheel, a second transmission wheel connected to the other end of the transmission belt, a third transmission wheel connected to the second transmission wheel through a first transmission shaft, a second transmission belt sleeved on the third transmission wheel and a fourth transmission wheel connected to the second transmission belt. The fourth transmission wheel is connected to the dust suction fan through a second transmission shaft, which is used for driving the dust suction fan to rotate and providing the negative pressure air flow to the dust removal pipe.

5. The split intake device of claim 1, wherein, The dust suction mechanism comprises a plurality of negative pressure dust removal pipes connected to the more than one dust outlets respectively, a wind collecting cover arranged at the end of the negative pressure dust removal pipes and located at the side of the radiator and an engine fan arranged at one side of the wind collecting cover.

6. The split intake device of claim 5, wherein, The wind collecting cover is in conical structure, one end with large diameter is connected to the radiator, and the other end with small diameter is close to the negative pressure side of the fan, which is used for providing the negative pressure air flow to the wind collecting cover.

7. The split intake device of claim 1, wherein, Limiting protrusions are arranged on the outer diameter surface of the dust outlet, which are used for connecting the sealing cover.

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