Dust and impurity removal system for engine fan and harvesting machine

Abstract

The utility model relates to the technical field of engine fans of harvesting machinery, in particular to a dust and impurity removal system for an engine fan, a dust removal cover is arranged on one side of an air inlet of the engine fan, and a collection box is arranged below the outer side of the dust removal cover; an upper opening of the collection box is used for receiving sundries falling from the dust removal cover; a lower opening of the collecting box is communicated with one end of a gettering fan pipeline, and the other end of the gettering fan pipeline is communicated with an inlet end of a gettering fan; and the outlet end of the gettering fan is communicated with the external environment. After grass bran, dust and other impurities generated when a user drives the harvester to work normally cover the dust removal cover, the engine fan can be controlled to stop or rotate reversely, meanwhile, the impurity suction fan is started, the impurities on the dust removal cover fall into the collection box and are discharged to the outside through the impurity suction fan pipeline, and therefore impurity accumulation on the surface of the dust removal cover is reduced to a certain degree, and the service life of the harvester is prolonged. A user does not need to frequently clean grass on the surface of the dust hood, and operation efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine fans of harvesting machinery, in particular to a dust and impurity removal system for an engine fan and a harvesting machinery. Background Art

[0002] At present, when harvesting machinery is operating, a large amount of straw chaff, dust, etc. will be generated around the entire vehicle, which can easily be adsorbed onto the dust cover by the airflow generated by the high-speed rotation of the engine fan. After accumulating over time, it will clog the dust cover and block the heat exchange between the radiator and the external airflow, causing the water temperature to rise and the engine to easily malfunction.

[0003] Therefore, users need to clean the accumulated grass on the dust hood regularly. In some extreme cases, the hood needs to be cleaned during operation, which increases labor intensity and reduces operation efficiency. Utility Model Content

[0004] The utility model aims to improve at least one technical problem existing in the background technology and provides a dust and impurity removal system for an engine fan.

[0005] The dust removal and impurity removal system for the engine fan is implemented as follows:

[0006] A dust cover is provided on one side of the air inlet of the engine fan, and a collection box is provided below the outer side of the dust cover;

[0007] The upper opening of the collection box is used to receive debris dropped from the dust cover; the lower opening of the collection box is connected to one end of a suction fan pipeline, and the other end of the suction fan pipeline is connected to an inlet end of the suction fan; the outlet end of the suction fan is connected to the external environment.

[0008] In a preferred embodiment, the collection box is trumpet-shaped, an opening with a larger cross-sectional area of ​​the collection box faces the lower end of the dust cover, and an opening with a smaller cross-sectional area of ​​the collection box is connected to one end of the suction fan pipeline.

[0009] In a preferred embodiment, the front side wall and the rear side wall of the collection box are straight wall surfaces, and the left side wall and the right side wall of the collection box are arc-shaped wall surfaces.

[0010] In a preferred embodiment, the surface of the dust cover is corrugated and provided with densely arranged through holes.

[0011] In a preferred embodiment, both side edges of the dust cover are bent and connected to the engine fan via screws, so that a certain gap is formed between the surface of the dust cover and the surface of the engine fan.

[0012] In a preferred embodiment, the gap is 1 cm to 5 cm.

[0013] In a preferred embodiment, the dust and debris removal system further comprises a debris suction fan driving wheel, the debris suction fan driving wheel is drivingly connected to the engine main shaft, and the debris suction fan driving wheel is connected to the driving end of the debris suction fan via a belt.

[0014] In a preferred embodiment, the dust and debris removal system further includes a suction fan tensioning mechanism, wherein the suction fan tensioning mechanism includes at least one tensioning wheel, and the tensioning wheel is disposed near the belt to adjust the tightness of the belt.

[0015] In a preferred embodiment, the engine fan is a forward and reverse axial flow fan.

[0016] In a preferred embodiment, it also includes a temperature sensor and a controller; the controller is electrically connected to the temperature sensor, the engine fan and the suction fan respectively, and the temperature sensor is used to detect the water temperature in the radiator water tank; when the temperature value detected by the temperature sensor exceeds a set threshold, the controller controls the engine fan to stop rotating or rotate in the opposite direction, and controls the suction fan to work.

[0017] The utility model also provides a harvesting machine, comprising the dust and debris removal system mentioned above.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] This technical solution can adapt to harvester operations under multiple environmental conditions. When the user drives the harvester to operate normally, the engine fan rotates, and after a period of work, the chopped corn leaves and straw chaff will be adsorbed onto the dust cover, thereby blocking the heat exchange between the radiator core and the outside world to a certain extent. At this time, the engine fan can be controlled to stop or reverse, and the suction fan can be turned on at the same time to make the straw chaff, dust and other debris on the dust cover fall into the collection box. Under the negative pressure of the suction fan, the debris is discharged to the outside through the suction fan pipeline, thereby reducing the accumulation of debris on the surface of the dust cover to a certain extent. Users do not need to frequently clean the grass on the surface of the dust cover, and can also improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the dust and impurity removal system provided by the utility model;

[0022] Figure 2 A control logic schematic diagram of the dust and impurity removal system provided by the utility model;

[0023] Numbers in the figure:

[0024] 1-dust cover; 2-engine fan; 3-collection box;

[0025] 4- suction fan pipeline; 5- suction fan;

[0026] 6-tensioning mechanism of the impurity suction fan; 7-driving wheel of the impurity suction fan;

[0027] 8- Temperature sensor; 9- Controller. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and marked in the drawings can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] The structure of the dust removal and impurity removal system for the engine fan provided in this embodiment is as follows: Figure 1 As shown,

[0036] A dust cover 1 is provided on one side of the air inlet of the engine fan 2 of the harvesting machine. The dust cover 1 is covered on one side of the air inlet of the engine fan 2 in the form of a frame to ensure that the incoming air flows through the dust cover 1.

[0037] A collecting box 3 is provided at the lower outer side of the dust hood 1; the collecting box 3 is trumpet-shaped as a whole, and an opening with a larger cross-sectional area faces the lower end of the dust hood 1, and is used to receive debris dropped from the dust hood 1; the lower opening of the collecting box 3 has a smaller cross-sectional area, and is connected to one end of a dust suction fan pipeline 4, and the other end of the dust suction fan pipeline 4 is connected to the inlet end of the dust suction fan 5; the outlet end of the dust suction fan 5 is connected to the external environment.

[0038] When the user drives the harvester to operate normally, the engine fan 2 rotates, and after a period of work, the chopped corn leaves and straw chaff will be adsorbed onto the dust cover 1, thereby blocking the heat exchange between the radiator core and the outside to a certain extent. At this time, the engine fan 2 can be controlled to stop working, and the dust suction fan 5 can be turned on at the same time, so that the straw chaff, dust and other debris on the dust cover 1 fall into the collection box 3. Under the negative pressure of the dust suction fan 5, the debris is discharged to the outside through the dust suction fan pipeline 4.

[0039] The shape of the collection box 3 is not limited, and the overall shape is thick at the top and narrow at the bottom, which is convenient for collecting debris. In a more preferred embodiment, the front side wall and the rear side wall of the collection box 3 are basically straight walls in the vertical direction, and the left side wall and the right side wall of the collection box 3 are arc-shaped walls. This structure makes the collection box 3 have a larger lateral width and a smaller longitudinal width, which reduces the space occupied and is convenient for installation on the harvesting machinery. The arc-shaped walls on both sides are steep at the top and slow at the bottom, which is also more conducive to the collection and falling of debris.

[0040] The surface of the dust cover 1 is corrugated and provided with densely arranged through holes. The corrugated surface can expand the dust and impurity removal area, and make the wind direction generated by the engine fan form a certain angle with the surface of the dust cover 1, so as to prevent straw chaff, dust and other debris from completely blocking the through holes on the surface of the dust cover 1, thereby improving the reliability of the engine fan.

[0041] In order to further improve the air intake performance of the dust cover 1, the two side edges of the dust cover 1 are bent and connected to the side of the engine fan 2 by screws, so that a certain gap is formed between the surface of the dust cover 1 and the surface of the engine fan 2. The existence of the gap allows air inlets to be left in the upper and lower directions of the dust cover 1 and the engine fan 2. When the surface of the dust cover 1 is covered with debris and the air intake is reduced, the engine fan 2 can still obtain a certain amount of air intake from the upper and lower gaps with less debris, thereby improving the reliability of the engine fan.

[0042] The gap should not be too large or too small, and is usually preferably set to 1 cm to 5 cm, so as to take into account both the weeding and debris removal function of the dust cover 1 and the air intake of the engine fan 2.

[0043] The power of the suction fan 5 can be set as needed. For example, it can be powered directly from the battery of the harvester, or it can be connected to the hydraulic system of the harvester and driven hydraulically.

[0044] In this embodiment, the dust and debris removal system further includes a dust suction fan driving wheel 7, which is connected to the engine main shaft in a transmission manner. By controlling the coordination between the clutch and the engine main shaft, the dust suction fan driving wheel 7 can directly obtain power from the engine main shaft. The dust suction fan driving wheel 7 is connected to the driving end of the dust suction fan 5 through a belt, thereby being able to drive the dust suction fan 5 to rotate.

[0045] The dust and impurity removal system comprises an impurity suction fan tensioning mechanism 6, and the impurity suction fan tensioning mechanism 6 comprises at least one tensioning wheel, and the tensioning wheel is arranged near the belt and is used to adjust the tightness of the belt.

[0046] The way in which the suction fan 5 obtains power from the engine main shaft is more stable and reliable than electric drive and hydraulic drive, and the control method is also simpler.

[0047] In order to achieve a better dust and debris removal effect, the engine fan 2 can also adopt a forward and reverse axial flow fan, that is, the engine fan 2 can reverse to blow off the debris on the surface of the dust cover 1.

[0048] The control logic of the dust removal and impurity removal system provided in this embodiment is as follows: Figure 2 As shown. In this embodiment, the controller 9 is electrically connected to the temperature sensor 8, the engine fan 2 and the dust suction fan 5 respectively. The temperature sensor 8 is used to detect the water temperature in the heat dissipation water tank of the harvesting machinery. The engine fan 2 adopts a forward and reverse axial flow fan. When the temperature value detected by the temperature sensor 8 exceeds the set threshold, the controller 9 controls the engine fan 2 to rotate in the opposite direction and controls the dust suction fan 5 to work. The engine fan 2 blows the straw chaff, dust and other debris attached to the surface of the dust cover 1 into the collection box 3, and the dust suction fan 5 sucks and discharges the debris in the collection box 3 to the outside of the harvesting machinery through the dust suction fan pipeline 4, thereby reducing the accumulation of debris on the surface of the dust cover to a certain extent. The user does not need to frequently clean the grass on the surface of the dust cover, and the working efficiency can also be improved.

[0049] The temperature sensor 8 may also be replaced by other types of sensors, such as a flow sensor for measuring the wind force of the engine fan 2 .

[0050] The present embodiment also provides a harvesting machine, including the dust and debris removal system, which can simply and efficiently remove debris on the surface of the engine fan in various harvesting scenarios and maintain reliable operation for a long time.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust removal and impurity removal system for an engine fan, characterized in that: A dust cover is provided on one side of the air inlet of the engine fan, and a collection box is provided below the outer side of the dust cover; The upper opening of the collection box is used to receive debris dropped from the dust cover; the lower opening of the collection box is connected to one end of a suction fan pipeline, and the other end of the suction fan pipeline is connected to an inlet end of the suction fan; the outlet end of the suction fan is connected to the external environment.

2. The dust and impurity removal system according to claim 1, characterized in that: The collecting box is trumpet-shaped, an opening with a larger cross-sectional area of ​​the collecting box faces the lower end of the dust cover, and an opening with a smaller cross-sectional area of ​​the collecting box is connected to one end of the impurity suction fan pipeline.

3. The dust and impurity removal system according to claim 2, characterized in that: The front side wall and the rear side wall of the collection box are straight wall surfaces, and the left side wall and the right side wall of the collection box are arc-shaped wall surfaces.

4. The dust and impurity removal system according to claim 1, characterized in that: The surface of the dust removal cover is corrugated and is provided with densely arranged through holes.

5. The dust and impurity removal system according to claim 4, characterized in that: The edges of both sides of the dust cover are bent and connected to the engine fan through screws, so that a certain gap is formed between the surface of the dust cover and the surface of the engine fan.

6. The dust and impurity removal system according to claim 5, characterized in that: The gap is 1 cm to 5 cm.

7. The dust and impurity removal system according to claim 1, characterized in that: It also includes a suction fan driving wheel, which is drivingly connected to the main shaft of the engine, and is connected to the driving end of the suction fan through a belt.

8. The dust and impurity removal system according to claim 7, characterized in that: It also includes a suction fan tensioning mechanism, which includes at least one tensioning wheel, and the tensioning wheel is arranged near the belt to adjust the tightness of the belt.

9. The dust and impurity removal system according to claim 1, characterized in that: The engine fan is a forward and reverse axial flow fan.

10. A harvesting machine, characterized in that: A dust and impurity removal system comprising any one of claims 1 to 9.

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