Stubble recovery device

Abstract

The utility model discloses a stubble recovery device which comprises a soil breaking mechanism, a soil shoveling mechanism, a primary screening and conveying mechanism and a secondary screening and conveying mechanism which are sequentially connected. The soil breaking mechanism is used for digging and scattering the root stubbles and soil attached to the root stubbles; then the soil is conveyed to the primary screening and conveying mechanism through the soil shoveling mechanism; the primary screening and conveying mechanism is of a vibration belt type and is used for primarily screening the shoveled stubbles and soil; the secondary screening and conveying mechanism comprises at least two augers which are axially arranged in parallel, and the axial direction of the augers is perpendicular to the conveying direction of the primary screening and conveying mechanism; a screen is arranged below each auger; and the discharging end of the front auger is connected with the feeding end of the rear auger. According to the device, stubble digging and screening are integrated, the two-stage separation principle and screening mechanisms of different structures are adopted, the characteristics of the two-stage screening mechanisms are combined, the screening path is prolonged on the basis that the occupied area is reduced, the screening effect is fully guaranteed, the recycled stubbles basically do not contain soil, and combustion is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and particularly relates to a stubble recycling device. Background Art

[0002] China is a large agricultural country. After crop harvest every year, a large amount of stubble remains in the fields. These stubbles affect subsequent cultivation in the fields. Currently, the common solution is to directly return the stubble and straw to the field after being broken by a rotary tiller. However, this practice causes the accumulation of the sources of bacteria (insects) of various crop soil-borne diseases, leading to the aggravation of crop diseases and pests. The stubble has a very high calorific value and is a good biofuel. If it can be recycled and centrally utilized, it can not only solve the disease problem but also be used for heating and power generation. However, the excavation and recycling of stubble are not only time-consuming and laborious, but also a large amount of soil remains on the roots, seriously affecting the combustion quality. Content of the Utility Model

[0003] The purpose of the utility model is to provide a stubble recycling device to solve the deficiencies of the prior art.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A stubble recycling device, characterized in that it includes a soil-breaking mechanism, a soil-shoveling mechanism, a primary screening and conveying mechanism, and a secondary screening and conveying mechanism connected in sequence;

[0006] The soil-breaking mechanism is used to excavate and disperse the stubble and the soil attached to the stubble;

[0007] The soil-shoveling mechanism is used to shovel up the stubble and soil excavated by the soil-breaking mechanism and convey them to the primary screening and conveying mechanism;

[0008] The primary screening and conveying mechanism is a vibrating belt-type screening and conveying mechanism, which is used for initially screening the stubble and soil shoveled up by the soil-shoveling mechanism;

[0009] The secondary screening and conveying mechanism includes at least 2 augers arranged side by side axially. The axial direction of the auger is perpendicular to the conveying direction of the primary screening and conveying mechanism; a screen is provided below each auger; the discharge end of the previous auger is connected to the feed end of the next auger.

[0010] Preferably, the stubble recycling device as described above further includes a housing;

[0011] The soil-breaking mechanism, the soil-shoveling mechanism, the primary screening and conveying mechanism, and the secondary screening and conveying mechanism are all arranged on the housing.

[0012] Preferably, the stubble recycling device as described above further includes a power device;

[0013] The soil-breaking mechanism, the primary screening and conveying mechanism, and the secondary screening and conveying mechanism are all driven by the power device.

[0014] Preferably, the number of the power devices is 1;

[0015] One of the soil-breaking mechanism, the primary screening and conveying mechanism, and the secondary screening and conveying mechanism is directly connected to the power device, and the other two mechanisms are connected to the mechanism directly connected to the power device through a synchronization device.

[0016] Preferably, the synchronization device is a belt.

[0017] Preferably, the soil-breaking mechanism includes a soil-breaking shaft and a plurality of soil-breaking knives linearly and arrayedly distributed along the axial direction of the soil-breaking shaft.

[0018] Preferably, the soil-shoveling mechanism is a soil-shoveling plate; one end of the soil-shoveling plate is close to the soil-breaking mechanism, and the other end is close to the feeding end of the primary screening and conveying mechanism.

[0019] Preferably, the primary screening and conveying mechanism includes two rolling shafts and a conveyor belt wound around the two rolling shafts. The two rolling shafts are respectively located at both ends of the conveyor belt in the length direction; the conveyor belt is provided with sieve holes;

[0020] Pulley wheels are provided at both axial ends and the middle part of each rolling shaft;

[0021] Two pulley wheels opposite to each other in the length direction of the conveyor belt are connected through the synchronization device.

[0022] Preferably, the number of the augers is 2.

[0023] Preferably, a discharge port is provided at the discharge end of the last auger;

[0024] When the stubble recycling device is applied, it is installed at the front end of an agricultural harvester. The discharge port is connected to the material receiving port of the agricultural harvester, and the screened stubble is collected at the material receiving port.

[0025] The stubble recycling device provided by the present application integrates stubble excavation and screening, adopts a two-stage separation principle and screening mechanisms with different structures, combines the characteristics of the two-stage screening mechanisms, extends the screening path on the basis of reducing the floor area, fully ensures the screening effect, and the recycled stubble basically does not contain soil and is conducive to burning. Description of the Drawings

[0026] Figure 1 It is an isometric schematic diagram of a stubble recycling device provided by a preferred embodiment of the present utility model;

[0027] Figure 2 ForFigure 1 Side view;

[0028] Figure 3 is Figure 1 Top view of;

[0029] Figure 4 is Figure 3 Sectional view taken along line B - B in;

[0030] Figure 5 is Figure 1 Top view of the secondary screening and conveying mechanism in;

[0031] Explanation of reference numerals:

[0032] 1 - Soil breaking mechanism; 2 - Earth blade; 3 - Primary screening and conveying mechanism; 4 - Secondary screening and conveying mechanism; 5 - Machine housing; 11 - Soil breaking shaft; 12 - Soil breaking knife; 31 - Conveyor belt; 32 - Pulley Ⅰ; 33 - Pulley Ⅱ; 41 - Auger Ⅰ; 42 - Auger Ⅱ; 43 - Screen Ⅰ; 44 - Screen Ⅱ; 45 - Belt; 46 - Discharge port; 47 - Power device. Detailed implementation manners

[0033] The stubble recycling device provided by this application, as Figures 1 to 5 shown, includes a soil breaking mechanism 1, a soil shoveling mechanism, a primary screening and conveying mechanism 3, and a secondary screening and conveying mechanism 4 that are connected in sequence.

[0034] Among them, the soil breaking mechanism 1 is used to dig and disperse the stubble and the soil attached to the stubble. After being dug and dispersed, the stubble and the soil are shoveled by the soil shoveling mechanism and conveyed to the primary screening and conveying mechanism 3 for primary screening. The primary screening and conveying mechanism 3 is a vibrating belt - type screening and conveying mechanism. During the conveying process of the vibrating belt - type screening and conveying mechanism, affected by vibration, the soil combined with the stubble loosens, large - sized soil pieces are broken into small pieces, and are removed through preliminary screening. The soil and stubble that are closely combined with the stubble and not removed through preliminary screening are conveyed to the secondary screening and conveying mechanism for further screening.

[0035] The secondary screening and conveying mechanism includes at least two augers arranged side by side axially, and the axial direction of the auger is perpendicular to the material conveying direction of the primary screening and conveying mechanism; a screen is provided below each auger; the discharge end of the previous auger is connected to the feed end of the next auger, and the material enters each auger in turn for screening. First, the secondary screening and conveying mechanism uses an auger. Under the forced stirring and conveying action of the auger, the soil tightly combined with the root stubble is stripped and removed through the screen. Second, the auger direction of the secondary screening and conveying mechanism is set perpendicular to that of the primary screening and conveying mechanism, adapting to the relatively narrow longitudinal dimension of the auger, reducing the floor area of the entire device while ensuring the material conveying distance and screening path; furthermore, by using multiple augers, the floor area only increases slightly, but the screening path is greatly extended, improving the screening effect. Preferably, the number of augers is two.

[0036] Therefore, the root stubble recovery device provided by the present application integrates root stubble excavation and screening, adopts a two-stage separation principle and screening mechanisms with different structures, combines the characteristics of the two-stage screening mechanisms, extends the screening path while reducing the floor area, fully ensures the screening effect, and the recovered root stubble basically contains no soil, which is beneficial for burning.

[0037] The root stubble recovery device provided by the present application can be installed at the front end of an agricultural harvester. An outlet 46 is provided at the discharge end of the last auger, and the outlet 46 is connected to the material receiving port of the harvester. The separated root stubble is collected through the material receiving port of the harvester, thereby integrating crop harvesting and root stubble recovery into one, achieving crop harvesting and root stubble recovery in one step, and improving production efficiency.

[0038] As can be understood by those skilled in the art, the root stubble recovery device provided by the present application further includes a housing 5 and a power device 47. The housing 5 is used to support and install the soil-breaking mechanism 1, the soil-shoveling mechanism, the primary screening and conveying mechanism 3, the secondary screening and conveying mechanism 4, and the power device 47. The power device 47 is used to drive the soil-breaking mechanism, the primary screening and conveying mechanism, and the secondary screening and conveying mechanism to work.

[0039] Preferably, the number of the power devices 47 is one; one of the soil-breaking mechanism, the primary screening and conveying mechanism, and the secondary screening and conveying mechanism is directly connected to the power device, and the other two mechanisms are connected to the mechanism directly connected to the power device through a synchronization device. Through this setting, one power device can be used to drive the soil-breaking mechanism, the primary screening and conveying mechanism, and the secondary screening and conveying mechanism to work simultaneously, which not only ensures the synchronization of the work of each mechanism, improves the screening efficiency, but also saves energy and reduces the operating cost.

[0040] The synchronization device can adopt a belt, a gear, etc., and preferably a belt, which can achieve long-distance synchronization compared with a gear.

[0041] Preferably, in the secondary screening device, the spiral directions of the auger I 41 and the auger II 42 are opposite, achieving reverse conveying while rotating in the same direction.

[0042] Preferably, the soil-breaking mechanism includes a soil-breaking shaft 11 and a plurality of soil-breaking knives 12 linearly arrayed along the axial direction of the soil-breaking shaft. Each soil-breaking knife 12 includes a plurality of blades circumferentially arrayed along the radial direction of the soil-breaking shaft. During application, the soil-breaking knives penetrate into the soil, and as the device advances, the root stubbles and the attached soil are dug and dispersed together.

[0043] Preferably, the soil-shoveling mechanism is a soil-shoveling plate 2; one end of the soil-shoveling plate 2 is close to the soil-breaking mechanism 1, and the other end is close to the feeding end of the primary screening and conveying mechanism 3. During application, one end of the soil-shoveling plate 2 penetrates under the ground surface. As the device advances, the root stubbles and the attached soil dug and dispersed by the soil-breaking mechanism are shoveled up together and conveyed onto the primary screening and conveying mechanism 3.

[0044] Preferably, the primary screening and conveying mechanism 3 includes two rolling shafts and a conveyor belt 31 wound around the two rolling shafts. The two rolling shafts are respectively located at both ends in the length direction of the conveyor belt; the conveyor belt 31 is provided with sieve holes. Belt pulleys are provided at both axial ends and the middle part of each rolling shaft; two belt pulleys opposite to each other in the length direction of the conveyor belt are connected by a synchronizing device such as a belt.

[0045] During the conveying process of the root stubbles and the soil on the conveyor belt, affected by the vibration of the conveyor belt, the soil combined with the root stubbles becomes loose, and the large soil blocks are broken into small pieces, which leak through the sieve holes and are separated from the root stubbles.

[0046] With such a setting, the conveyor belt is driven by multiple belt pulleys, and the conveying is relatively stable. Especially in this application, an auger is provided in the width direction of the conveyor belt. To ensure the screening path of the auger, the conveyor belt is relatively wide, and it is prone to failure during operation. In this application, belt pulleys are also provided in the middle part in the width direction of the conveyor belt, which can reduce the above problems and improve the working stability of the conveyor belt.

[0047] As Figures 1 to 5 shown, the root stubble recycling device provided by a preferred embodiment of the present application includes a machine shell 5. The machine shell is sequentially provided with a soil-breaking mechanism 1, a soil-shoveling plate 2, a primary screening and conveying mechanism 3, and a secondary screening and conveying mechanism 4 from left to right.

[0048] The soil-breaking mechanism 1 includes a soil-breaking shaft 11 and soil-breaking knives 12. The primary screening and conveying mechanism includes a conveyor belt 31 and two rollers located at both ends of the conveyor belt. At both axial ends (i.e., the width direction of the conveyor belt) and the middle part of each roller, pulleys are provided, specifically including three pulleys I 32 on the left roller and three pulleys II 33 on the right roller. A synchronous belt 45 is provided between the opposite pulleys I 32 and pulleys II 33. In addition, a synchronous belt 45 is also provided between one or two of the pulleys I 32 on both sides in the width direction of the conveyor belt and the soil-breaking shaft.

[0049] The secondary screening and conveying mechanism includes two augers arranged in parallel, namely auger I 41 and auger II 42. The conveying directions of auger I 41 and auger II 42 are perpendicular to the conveying direction of the conveyor belt 31. Screens I 43 and screens II 44 are respectively provided at the lower parts of auger I 41 and auger II 42. The discharge end of auger I 41 is connected to the feed end of auger II 42, and a discharge port 46 is provided at the discharge end of auger II 42. Synchronous belts 45 are provided between the rotating shaft of auger I 41 and pulley II 33, and between the rotating shaft of auger I 41 and the rotating shaft of auger II 42.

[0050] A power device 47 is provided on one side of auger I 41, and the rotating shaft of auger I 41 is directly connected to the output shaft of the power device.

[0051] When this application is used, the stubble recycling device is placed at the front end of the agricultural harvester. The power device 47 outputs power to drive auger I 41 and auger II 42 to rotate. At the same time, the power is transmitted to pulley II 33 through the belt 45 to drive the conveyor belt 31 to run. The conveyor belt 31 drives pulley I 32 to rotate, and pulley I 32 transmits the power to the soil-breaking shaft 11 through the belt 45. The soil-breaking knives 12 on the soil-breaking shaft 11 rotate together with the soil-breaking shaft to achieve linkage operation.

[0052] When the harvester travels forward, the soil-breaking knives 12 break up the soil, and the soil and stubble are sent along the soil shovel 2 to the primary screening and conveying device 3. The stubble is initially screened on the hollow conveyor belt 31 and then conveyed backward to the secondary screening and conveying device 4. Through the spiral agitation of auger I 41 and auger II 42, the material moves along the Figure 3 indicated direction, and is further screened through screens I 43 and screens II 44, and finally reaches the discharge port 46. The discharge port 46 is connected to the material receiving port of the harvester and is collected through the material receiving port of the harvester.

[0053] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications that fall within the scope of the present utility model. Obviously, those skilled in the art can make various changes and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A stubble recovery device, characterized in that: It includes a soil breaking mechanism, a soil shoveling mechanism, a primary screening and conveying mechanism and a secondary screening and conveying mechanism which are connected in sequence; The soil breaking mechanism is used to dig and break up the stubble and the soil to which the stubble is attached; The shoveling mechanism is used to shovel up the stubble and soil excavated by the earth-breaking mechanism and transport them to the primary screening and transporting mechanism; The primary screening and conveying mechanism is a vibrating belt screening and conveying mechanism, which is used for initially screening the stubble and soil shoveled up by the shoveling mechanism; The secondary screening and conveying mechanism includes at least two axially parallelly arranged augers, the axial direction of the augers is perpendicular to the conveying direction of the primary screening and conveying mechanism; a screen is provided under each augers; the discharge end of the previous augers is connected to the feed end of the next augers.

2. The stubble recovery device according to claim 1, characterized in that: Also includes a case; The soil breaking mechanism, the soil shoveling mechanism, the primary screening and conveying mechanism and the secondary screening and conveying mechanism are all arranged on the casing.

3. The stubble recovery device according to claim 1, characterized in that: Also includes powerplant; The earth-breaking mechanism, the primary screening and conveying mechanism and the secondary screening and conveying mechanism are all driven by the power device.

4. The stubble recovery device according to claim 3, characterized in that: The number of the power unit is 1; One of the earth-breaking mechanism, the primary screening and conveying mechanism and the secondary screening and conveying mechanism is directly connected to the power device, and the other two mechanisms are connected to the mechanism directly connected to the power device through a synchronization device.

5. The stubble recovery device according to claim 4, characterized in that: The synchronous device is a belt.

6. The stubble recovery device according to claim 1, characterized in that: The ground-breaking mechanism comprises a ground-breaking shaft and a plurality of ground-breaking knives distributed in a linear array along the axial direction of the ground-breaking shaft.

7. The stubble recovery device according to claim 1, characterized in that: The shoveling mechanism is a shoveling plate; one end of the shoveling plate is close to the earth-breaking mechanism, and the other end is close to the feeding end of the primary screening and conveying mechanism.

8. The stubble recovery device according to claim 4, characterized in that: The primary screening and conveying mechanism comprises two rolling shafts and a conveyor belt wound around the two rolling shafts, wherein the two rolling shafts are respectively located at two ends of the conveyor belt in the length direction; the conveyor belt is provided with sieve holes; Each rolling shaft is provided with pulleys at both ends and in the middle of the shaft; The two pulleys facing each other in the length direction of the conveyor belt are connected by the synchronization device.

9. The stubble recovery device according to claim 1, characterized in that: There are two augers.

10. The stubble recovery device according to claim 1, characterized in that: The last auger has a discharge port at its discharge end; The stubble recovery device is installed at the front end of an agricultural harvester when in use, the discharge port is connected to the receiving port of the agricultural harvester, and the stubble after screening is collected at the receiving port.

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