Grain cleaning device and grain combine harvester

Abstract

The grain cleaning device comprises a fan volute, an air adjusting plate, a rotating handle and an adjusting rotating handle, the two ends of the air adjusting plate are connected with the rotating handle and the adjusting rotating handle correspondingly, and the other end of the rotating handle and the other end of the adjusting rotating handle penetrate into the side wall of the fan volute; the air adjusting plate is further provided with a supporting assembly, one end of the supporting assembly is connected with the air adjusting plate, and the other end of the supporting assembly is connected with the fan volute. The air direction can be adjusted, the situation that the air adjusting plate deforms can be reduced, the grain cleaning effect of the grain combine harvester is enhanced, and grain loss is reduced. The invention further provides a grain combine harvester comprising the grain cleaning device.

Description

Technical Field

[0001] The invention relates to a grain cleaning device, in particular to a grain cleaning device, a grain combine harvester and a grain combine harvester. Background Art

[0002] Cereals refer to plant seeds (such as wheat, corn and rice) that can produce starchy seeds and are suitable for food; they also refer to seeds of produced or grain plants (in unprocessed state). Cereals can be used as staple food in daily life and can fill the stomach. At present, when harvesting cereals with harvesters, many impurities are mixed into the cereals. Therefore, after the harvesting of cereals, the cereals need to be cleaned to separate the cereals from the impurities.

[0003] When cleaning the grains, a fan is used for cleaning operations. For example, Chinese patent document invention CN103548505B discloses a grain cleaning system for a longitudinal axial flow harvester, which includes a frame, a threshing drum and a re-threshing device are arranged on the upper part of the frame, a vibrating screen is arranged on the lower part of the threshing drum, a cleaning fan is arranged on the left side of the vibrating screen, and a horizontal conveying auger for grain and a horizontal conveying auger for grain output are arranged on the lower part of the vibrating screen. The horizontal conveying auger for grain is connected to a vertical conveying auger for grains arranged on the back of the frame, and the conveying auger for grains is connected to the re-threshing device. The present invention adopts a special design structure combining a vibrating screen, a fan and re-threshing, which can perform multiple cleaning cycles, and the cleaning is more complete and the cleaning efficiency is high. However, in the prior art, since the wind direction cannot be adjusted, there is a problem of poor cleaning effect.

[0004] In order to solve the above technical problems, another Chinese patent document CN203181620U discloses a harvester fan wind direction adjusting device, comprising an adjusting plate arranged in a fan housing and an adjusting handle whose one end penetrates into the fan housing and can rotate relative to the fan housing, wherein the end of the adjusting handle penetrates into the fan housing and is connected to one side of the adjusting plate; the other end of the adjusting handle is inserted into an adjusting positioning hole arranged on the fan housing; the other side of the adjusting plate is connected to a rotating shaft extending out of the fan housing, and a return spring is provided between the extended end of the rotating shaft and the fan housing.

[0005] In the prior art, the airflow of the fan is guided by a direction-adjusting plate, and the direction of the airflow can be adjusted by adjusting the direction-adjusting plate, thereby achieving better grain cleaning and ensuring that the grains are clean. After the fan wind direction-adjusting device is applied to the harvester, it has a good cleaning effect at the beginning of use, but after long-term use, there are still many impurities in the grains, and the final overall grain cleaning effect is poor. Summary of the invention

[0006] In order to solve the technical problem of poor grain cleaning effect in the prior art, the present invention provides a grain cleaning device, including a fan volute, an air regulating plate, a rotating handle and an adjusting rotating handle, wherein the two ends of the air regulating plate are respectively connected to the rotating handle and the adjusting rotating handle, and the other ends of the rotating handle and the adjusting rotating handle penetrate into the side wall of the fan volute; wherein: the air regulating plate is also provided with a supporting assembly, one end of the supporting assembly is connected to the air regulating plate, and the other end is connected to the fan volute.

[0007] In the prior art, although the airflow can be guided by setting a steering plate, the steering plate in the prior art is long in size, and when the steering plate is connected to the fan volute, only connection points are set at both ends of the steering plate. In addition, when the steering plate guides the airflow, it also bears the force of the airflow. Therefore, after long-term use, the middle part of the steering plate will bend and deform. Once the steering plate is deformed, the airflow direction guided by the deformed part will deviate, which will eventually lead to poor cleaning effect.

[0008] In this solution, after the support component is set up and one end of the support component is connected to the fan volute, the support component is supported by the fan volute, and the support component supports the air regulating plate, which can reduce the deformation of the air regulating plate, thereby ensuring the cleaning effect of the grain cleaning device.

[0009] Preferably, there are multiple air regulating plates, and two adjacent air regulating plates are connected by a connecting handle, and the support assembly is connected to the connecting handle. In this solution, on the one hand, by reducing the length of a single air regulating plate, the deformation caused by the excessive weight of a single air regulating plate can be reduced. On the other hand, the gap between two adjacent air regulating plates provides an installation space for the support assembly, thereby preventing the support assembly from interfering with the rotation of the air regulating plate, ensuring the normal adjustment of the wind direction by the air regulating plate, and further ensuring the cleaning effect.

[0010] Preferably, the support assembly includes an intermediate fixing plate, the connecting handle passes through the intermediate fixing plate, and the intermediate fixing plate is installed on the inner wall of the fan volute. This solution uses the cooperation between the intermediate fixing plate and the connecting handle to support the air regulating plate, and has a simple structure.

[0011] Preferably, one end of the connecting handle connected to the air regulating plate is a flat end. This solution can improve the stable connection between the connecting handle and the air regulating plate, thereby ensuring the normal operation of the cleaning device.

[0012] Preferably, the support assembly further comprises a fixing plate arranged on the middle fixing plate, the fixing plate comprises a plurality of splicing plates, and the splicing plates are provided with splicing grooves matching with the connecting handle. This solution facilitates the installation of the connecting handle on the support assembly and is simple to operate.

[0013] Preferably, the fixing plate and the middle fixing plate are detachably connected. This solution facilitates the installation and removal of the fixing plate and the middle fixing plate.

[0014] Preferably, the middle fixing plate includes connecting parts at both ends and a supporting part in the middle, the connecting parts are arranged vertically with the supporting part, and the fixing plate is connected to the supporting part. This solution can ensure the supporting effect of the air regulating plate to ensure the cleaning effect.

[0015] Preferably, wind shields are provided at both ends of the fan volute. This solution can reduce air volume loss, thereby ensuring the cleaning effect.

[0016] Preferably, an air adjustment fixing plate for fixing the rotation angle of the adjustment handle is provided on the fan volute, and the air adjustment fixing plate is arranged on the side of the fan volute passing through the adjustment handle. This solution facilitates the installation and replacement of the air adjustment fixing plate on the fan volute.

[0017] Preferably, the air adjustment fixing plate is provided with a plurality of grooves into which the adjusting handle can be inserted. This solution can realize the fixing of the air adjustment plate after adjustment, and has a simple structure.

[0018] Preferably, an elastic member is provided between the portion of the rotating handle extending out of the fan volute and the surface of the fan volute, and the elastic member is jacketed on the rotating handle. This solution can realize the rapid adjustment and fixation of the air regulating plate position and has a simple structure.

[0019] In a second aspect, the present invention provides a grain combine harvester, comprising the above-mentioned grain cleaning device.

[0020] The present invention has the following beneficial effects: 1. The present invention can adjust the wind direction and reduce the deformation of the wind regulating plate, thereby enhancing the grain cleaning effect of the grain combine harvester and reducing grain loss; 2. The present invention has a large adjustment range and the adjustment operation is simple and flexible; 3. The present invention has a simple structure, low cost and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial schematic diagram of the grain cleaning device and the grain combine harvester of the present invention and the grain cleaning device in the embodiment; Figure 2 Schematic diagram of the adjustment plate and support assembly ①; Figure 3 Schematic diagram of the adjustment plate and support assembly②; Figure 4 for Figure 1 A magnified view of middle; Figure 5 This is a schematic diagram of the air adjustment fixing plate; Figure 6 This is a schematic diagram of the adjustment handle. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods: 1. Definition Cleaning: refers to the removal of impurities, broken grains and immature grains from grains through a series of equipment and methods to improve the quality and purity of the grains.

[0023] 2. The reference numerals in the drawings of the specification include: fan volute 1, wind shield plate 2, air adjusting plate 3, fixing plate 4, connecting handle 5, flat end 51, middle fixing plate 6, connecting portion 61, adjusting handle 7, elastic member 71, cotter pin 72, air adjusting fixing plate 8, groove 81, and handle 9.

[0024] The embodiment is basically as shown in the attached Figure 1 As shown: the grain cleaning device includes a fan volute 1, an air regulating plate 3, a rotating handle 9 and an adjusting rotating handle 7, and the two ends of the air regulating plate 3 are respectively connected to the rotating handle 9 and the adjusting rotating handle 7. Figure 2 As shown, the two ends of the air regulating plate 3 are respectively connected to the handle 9 and the adjusting handle 7 through two sets of flange surface bolts M6×16 and flange surface nuts M6, and the other ends of the handle 9 and the adjusting handle 7 penetrate into the side wall of the fan volute 1; wherein: the air regulating plate 3 is also provided with a supporting assembly, one end of the supporting assembly is connected to the air regulating plate 3, and the other end is connected to the fan volute 1.

[0025] like Figure 2 and Figure 3 As shown, the air regulating plates 3 are provided with a plurality of pieces. In this embodiment, the air regulating plates 3 include two pieces on the left and right sides. The air regulating plates 3 are connected by connecting handles 5. Figure 4 As shown, one end of the connecting handle 5 connected to the air regulating plate 3 is a flat end 51, and the flat end 51 is fixed to the air regulating plate 3 by bolts.

[0026] The support assembly includes an intermediate fixing plate 6 and a fixing plate 4 for installing a connecting handle 5. The fixing plate 4 includes a plurality of splicing plates, each of which is provided with a splicing groove that matches the connecting handle 5. The fixing plate 4 is fixed to the intermediate fixing plate 6 by bolts. The intermediate fixing plate 6 includes connecting parts 61 at both ends and a supporting part in the middle. The connecting part 61 is vertically arranged with the supporting part. The fixing plate 4 is connected to the supporting part. The connecting parts 61 at both ends of the intermediate fixing plate 6 are respectively fixed to the inner surface of the fan volute 1 by two sets of flange bolts M6×16 and flange nuts M6. After the connecting handle 5 passes through the fixing plate 4, the two ends are respectively connected to the left and right adjustment plates, such as Figure 4 As shown, the left and right ends of the connecting handle 5 are respectively assembled with the left and right adjustment plates through two sets of flange bolts M6×16 and two sets of flange nuts M6.

[0027] Wind shields 2 are provided at both ends of the fan volute 1. The fan volute 1 is provided with an air adjustment fixing plate 8 for fixing the rotation angle of the adjustment handle 7, and the air adjustment fixing plate 8 is provided with a plurality of grooves 81 into which the adjustment handle 7 can be inserted. Figure 5As shown, the air adjustment fixing plate 8 is provided with five grooves 81, and the adjusting handle 7 can be inserted into any groove 81, usually in the second groove 81 from the top to the bottom, as shown in FIG. Figure 1 The air adjustment fixing plate 8 is arranged on the fan volute 1 and passes through the side of the adjustment handle 7, as shown in FIG. Figure 1 As shown, the adjusting handle 7 is arranged on the left side of the fan volute 1, so the air adjustment fixing plate 8 is also arranged on the outer surface of the left side of the fan volute 1, and the air adjustment fixing plate 8 is fixed to the outer surface of the left side of the fan volute 1 by two sets of flange bolts M6×16 and flange nuts M6. An elastic member 71 is arranged between the portion of the handle 9 extending out of the fan volute 1 and the surface of the fan volute 1, and the elastic member 71 is covered on the handle 9, as shown in FIG. Figure 6 As shown, in this embodiment, the elastic member 71 adopts a compression spring. After the elastic member 71 is sleeved on the turning handle 9, a flat washer is added to press the elastic member 71, and finally a split pin 72 is installed.

[0028] This embodiment also provides a grain combine harvester including the above-mentioned grain cleaning device.

[0029] The specific implementation process is as follows: When assembling the grain cleaning device in this embodiment, Figure 2 and Figure 3 As shown, after the air regulating plate 3 and the supporting assembly are assembled, the supporting assembly is installed on the fan volute 1.

[0030] Generally, the adjustment handle 7 is located in the second groove 81 from the top to the bottom of the air adjustment fixing plate 8. When the wind direction needs to be adjusted, the adjustment handle 7 is pulled outward to pull the adjustment handle 7 out of the groove 81, and then the adjustment handle 7 is turned, and the air adjustment plate 3 rotates with the adjustment handle 7. After the air adjustment plate 3 is adjusted to the desired position, the adjustment handle 7 is released, and under the action of the elastic member 71, the air adjustment plate 3 moves horizontally as a whole, and the adjustment handle 7 falls into the corresponding groove 81, completing the adjustment of the air adjustment plate 3. After the deflection angle of the air adjustment plate 3 changes, as shown in FIG. Figure 1 As shown, the air from the top enters the fan volute 1, is guided by the air regulating plate 3 and changes direction, and then forms a high-speed airflow at the outlet to perform a cleaning operation.

[0031] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A grain cleaning device, comprising a fan volute, an air regulating plate, a rotating handle and an adjusting rotating handle, wherein two ends of the air regulating plate are respectively connected to the rotating handle and the adjusting rotating handle, and the other ends of the rotating handle and the adjusting rotating handle penetrate into the side wall of the fan volute; characterized in that: The air regulating plate is also provided with a supporting assembly, one end of the supporting assembly is connected to the air regulating plate, and the other end is connected to the fan volute.

2. The grain cleaning device according to claim 1, characterized in that: The air regulating plates are provided in plurality, and two adjacent air regulating plates are connected via a connecting handle, and the supporting assembly is connected to the connecting handle.

3. The grain cleaning device according to claim 2, characterized in that: The support assembly comprises an intermediate fixing plate, the connecting handle passes through the intermediate fixing plate, and the intermediate fixing plate is mounted on the inner wall of the fan volute.

4. The grain cleaning device according to claim 3, characterized in that: One end of the connecting handle connected to the air regulating plate is a flat end.

5. The grain cleaning device according to claim 4, characterized in that: The support assembly also includes a fixing plate arranged on the middle fixing plate, the fixing plate includes a plurality of splicing plates, and the splicing plates are provided with splicing grooves matched with the connecting handles.

6. The grain cleaning device according to claim 5, characterized in that: The fixing plate is detachably connected to the middle fixing plate.

7. The grain cleaning device according to claim 6, characterized in that: The middle fixing plate comprises connecting parts at two ends and a supporting part in the middle, the connecting parts are arranged perpendicularly to the supporting part, and the fixing plate is connected to the supporting part.

8. The grain cleaning device according to any one of claims 1 to 7, characterized in that: Wind shields are arranged at both ends of the fan volute.

9. The grain cleaning device according to claim 8, characterized in that: The fan volute is provided with an air adjustment fixing plate for fixing the rotation angle of the adjusting handle, and the air adjustment fixing plate is arranged on the fan volute and passes through the side of the adjusting handle.

10. The grain cleaning device according to claim 9, characterized in that: The air adjustment fixing plate is provided with a plurality of grooves into which the adjusting handle can be inserted.

11. The grain cleaning device according to claim 10, characterized in that: An elastic member is provided between the portion of the rotating handle extending out of the fan volute and the surface of the fan volute, and the elastic member is sleeved on the rotating handle.

12. A grain combine harvester, characterized in that: It comprises a grain cleaning device as described in any one of claims 1-11.

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