CN212259846U - Multilayer sectional type regenerated rice seed cleaning sieve - Google Patents

Abstract

The utility model provides a multilayer sectional type regeneration rice grain cleaning sieve, include: the cleaning screen frame, and a shaking plate, an upper layer woven screen, a middle layer shutter screen, a tail fish scale screen and a lower layer woven screen which are arranged on the cleaning screen frame; the front end of the upper layer weaving screen is connected with the tail end of the shaking plate, the front end of the tail fish scale screen is connected with the tail end of the middle layer shutter screen, and the tail fish scale screen is arranged in an upward inclined mode; the middle level shutter sieve is including sieve piece, a plurality of first rough sketch group and a plurality of second chases rough sketch group, and first rough sketch group of chasing includes that two are first chases rough sketch, and two are first chases rough sketch and are "eight" font and distribute, and the second chases rough sketch group and sets up in the top of sieve piece, chases rough sketch including a plurality of seconds that are parallel to each other, and the second chases rough sketch follows the direction setting after to in the past, the utility model discloses can improve seed grain sieve permeability to carry out the layering diffusion to the high moisture content is taken off the thing.

Description

Multilayer sectional type regenerated rice seed cleaning sieve

Technical Field

The utility model relates to an agricultural harvesting equipment field especially relates to a regenerated rice grain cleaning sieve of multilayer sectional type.

Background

The ratoon rice is a rice variety which is cultivated by using dormant buds surviving on rice stakes after harvesting to ensure that the rice is spilt and ripened again, compared with the traditional rice, the ratoon rice has a plurality of advantages, in recent years, the single yield of the rice reaches the bottleneck, and the planting of the ratoon rice can effectively improve the multiple cropping index and the rice yield. Compared with double cropping rice, the regeneration season of the regenerated rice reduces three production links of one-time seedling raising, tillage and rice transplanting, and breaks through the bottleneck of shortage of the double cropping rice production season; compared with double cropping rice, the yield is obviously increased.

The cleaning plant is an important component of the rice and wheat combine harvester, and the quality of the performance of the cleaning plant directly influences the operation effect of the whole machine. The fan vibrating screen type cleaning device has high stability and strong adaptability, and is a cleaning device widely used at present. Compared with common rice, the harvesting of first season rice of the ratoon rice has special technical requirements, so the cleaning device for ratoon rice grains needs to have the following effects:

the agronomic requirement of high stubble remaining during the first harvest of the ratooning rice is that only the length of about 40cm below the head of the rice spike is harvested, so that dormant buds on the rice stake are reserved for the second harvest, and the ratio of the material to the paddy entering the combine harvester is lower than that of the common rice, and is usually only 1: about 1 percent, the grain content in threshed threshing material is more about 90 percent, and the impurity is mostly composed of short stems (stems with the length less than 8 cm), leaves, long grass and partial light impurities. Therefore, the cleaning sieve is required to have high grain penetration rate, so that the high grain content in the threshed material is adapted, and the cleaning work efficiency is improved.

When first season rice is harvested, the stems of the crops are luxuriant and have green leaves and high water content, and after the materials pass through the threshing device, the long grass and the leaves are mixed with grains to form a group and fall on the screen surface of the cleaning screen, so that the cleaning efficiency is reduced, and the impurity content and loss of the grains are increased. Therefore, the cleaning sieve is required to be capable of effectively layering and diffusing the ratooning rice threshed product in cooperation with the airflow so as to separate the grains from other impurities.

When the ratooning rice combine harvester works in the field, the rolling of the cut rice piles is inevitable, which directly influences the yield of rice in the regeneration season, and in order to reduce the loss as much as possible, the ratooning rice combine harvester usually adopts a wide cutting width header to harvest, and the rolling loss is reduced by reducing the times of the harvester walking back and forth in the field during the work. Compared with the common combine harvester, the feeding amount of the combine harvester for the ratoon rice is larger, so that the cleaning device has high working efficiency, the threshed objects are prevented from being accumulated on the sieve surface, and the separation of each component in the threshed objects is completed in a very short time, thereby ensuring the advancing speed of the harvester in the field.

The cleaning sieve commonly used for rice grains is mostly composed of a shaking plate, a fish scale sieve (an upper layer sieve), a straw-pushing sieve (a tail sieve) and a weaving sieve (a lower layer sieve), the fish scale sieve is good in air guiding performance and strong in pushing capacity, and the straw-pushing sieve at the tail part can be matched with air flow to discharge large impurities such as stalks out of the machine. However, the cleaning sieve with the structure has weak moisture separation capability, the condition of the threshing product of the regenerated rice is special, the materials with high moisture content are easy to block and accumulate on the sieve surface of the fish scale sieve, and the cleaning efficiency is reduced; the straw content in the rice thresher is low, the tail straw-pushing sieve can not fully play a role, but the effective area of the cleaning sieve is reduced, so that the cleaning effect of the traditional rice seed cleaning sieve on the rice thresher is not ideal.

SUMMERY OF THE UTILITY MODEL

Exist not enoughly among the prior art, the utility model provides a multilayer sectional type regeneration rice seed grain cleaning sieve improves the seed grain rate of sieving through using different sieve pieces to make full use of multilayer sieve structure cooperation air current takes off the thing to carry out the layering diffusion to high moisture content.

The utility model discloses a realize above-mentioned technical purpose through following technological means.

A multilayer sectional type regenerated rice seed cleaning sieve, comprising: the cleaning screen frame, and a shaking plate, an upper layer woven screen, a middle layer shutter screen, a tail fish scale screen and a lower layer woven screen which are arranged on the cleaning screen frame;

the upper layer woven screen, the middle layer louver screen and the lower layer woven screen are sequentially arranged from top to bottom, the front end of the upper layer woven screen is connected with the tail end of the shaking plate, the front end of the tail fish scale screen is connected with the tail end of the middle layer louver screen, and the tail fish scale screen is arranged in an upward inclined mode;

the middle layer shutter screen comprises a screen sheet, a plurality of first chasing draft bar groups and a plurality of second chasing draft bar groups, each first chasing draft bar group comprises two first chasing draft bars arranged on the cleaning screen frame, the two first chasing draft bars are distributed in a shape like a Chinese character 'ba', each second chasing draft bar group is arranged above the screen sheet, each second chasing draft bar group comprises a plurality of second chasing draft bars which are parallel to each other, and each second chasing draft bar is arranged along the direction from the front to the back.

Further, the mesh size of the upper layer woven screen is 50mm multiplied by 50 mm.

Furthermore, the shaking plate and the upper layer woven screen are positioned on the same height plane.

Furthermore, the sieve piece is a long rectangular flat steel plate which is not punched, the thickness of the sieve piece is 3mm, and the opening degree of the sieve piece is 15 mm-35 mm.

Further, the cleaning screen frame comprises two opposite cleaning screen side plates, the middle layer shutter screen is mounted on the cleaning screen side plates, an included angle alpha between the first straw grading strip and the cleaning screen side plates is 15-30 degrees, and the included angle alpha faces the tail fish scale screen.

Further, the distance between the second manuscript-by-manuscript bars in the second manuscript-by-manuscript bar group is 50 mm-80 mm.

Further, the mesh size of the lower layer woven screen is 20mm multiplied by 20 mm.

Further, the included angle between the tail fish scale sieve and the horizontal plane is 5-10 degrees

Further, the opening of the tail fish scale sieve is 15-35 mm.

The air guide plate is positioned below the shaking plate and divides an air duct below the shaking plate into an upper air duct and a lower air duct, and air flow in the upper air duct is blown to a position between the upper woven screen and the middle louver screen through a space between the shaking plate and the middle louver screen; and the air flow of the lower air duct blows to a space between the middle layer shutter screen and the lower layer woven screen.

The utility model has the advantages that:

1. the utility model discloses an use the shutter sieve as middle level sieve, its wind-guiding ability of effective performance is strong, the advantage that the seed grain rate of passing through the sieve is high, be applicable to the characteristics that the seed grain content is high that the regenerated rice takes off, be favorable to improving and clean efficiency, weave the sieve through the upper strata of increasing again above the shutter sieve, can effectively prevent the regenerated rice to take off most stem stalk in the thing and fall into middle level shutter sieve and lower floor and weave the sieve to effectively reduce the load of cleaning of middle level shutter sieve and lower floor's woven sieve, improve the clean rate of seed grain.

2. The utility model discloses a draft group is pursued to the second sets up and pursues the draft along the many of the direction distribution after to in the past, can effectively compensate shutter sieve propelling movement ability poor shortcoming, the cooperation air current pushes the blade of high moisture content and miscellaneous surplus such as long grass to the backsize, avoid piling up on a large amount of materials rescreen the face, the seed grain distribution condition that thresher takes off the thing flows for the characteristics that both sides seed grain content risees gradually from the centre according to the axis of ordinates, first chasing the draft that is "eight" font distribution in the draft group of pursuing can make the thing of taking off that falls in middle level shutter sieve face both sides gather together to the middle of the sieve face, and then make the material evenly distributed on the sieve face again, effectively utilize the sieve face effective area, reduce local load, the effect of cleaning is cleaned in the improvement.

3. The utility model discloses use the fish scale sieve to replace the afterbody of traditional cleaning sieve to pursue the draft sieve, to the very little characteristics of stem stalk content in the ratoon rice threshing out thing, avoided the tradition to pursue the space waste that the draft sieve caused, effectively improved the effective cleaning area of cleaning sieve to effectively with long grass and blade get rid of outside.

4. The utility model discloses set up one air distribution plate in shaking board below, should divide air distribution plate to be cleaned two wind channels about the fan goes up the air outlet air current and falls into, goes up the wind channel stream and blows to the upper strata and weave between the sieve and the middle level shutter sieve, and the cooperation sieve vibration is with the surplus propelling movement of big miscellaneous such as stem stalk, long grass and blade to the sieve tail and outside the sieve, and the lower wind channel air current blows to between middle level shutter sieve and the lower floor weave the sieve for with light miscellaneous blow off the machine outward. The utility model discloses the multilayer sieve cooperation air current that sets up can have to accomplish layering and the diffusion to the high moisture content material in the limit space again, has improved the cleaning quality.

Drawings

FIG. 1 is a first schematic structural view of a multi-layer sectional type regenerated rice seed cleaning sieve according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram II of a multi-layer sectional type regenerated rice seed cleaning sieve according to an embodiment of the present invention;

FIG. 3 is a side cross-sectional view of the multi-layer segmented regenerated rice seed cleaning screen of FIG. 1;

FIG. 4 is a schematic view of the construction of the middle layer blind screen of FIG. 1;

FIG. 5 is a schematic top view of the middle layer blind screen of FIG. 1;

fig. 6 is a structural view of the beam assembly and the straw in fig. 1.

Fig. 7 is a gas flow diagram in the working process of the multilayer sectional type regenerated rice grain cleaning sieve in fig. 1.

Fig. 8 is a material flow diagram in the working process of the multilayer sectional type regenerated rice grain cleaning sieve in fig. 1.

Reference numerals:

1-shaking the board; 2-upper layer weaving screen; 3-middle layer shutter screen; 301-louver screen blades; 302-first progressive drafts; 303-second progressive drafts; 304-a beam assembly; 305-louver screen side; 4-tail fish scale sieve; 5-lower layer weaving sieve; 6-air deflector; 601-upper air duct; 602-lower air duct; 7-cleaning a screen side plate; 8-cleaning fan; 801-upper air outlet; 802-lower air outlet; 9-a kernel auger; 10-a tailing screw.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

A multilayer sectional type regenerated rice seed cleaning sieve according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 8, a multilayer sectional type cleaning sieve for rice seeds comprises a cleaning sieve frame, and a shaking plate 1, an upper layer woven sieve 2, a middle layer blind-window sieve 3, a tail fish scale sieve 4 and a lower layer woven sieve 5 which are mounted on the cleaning sieve frame.

Specifically, the upper layer woven sieve 2, the middle layer louver sieve 3 and the lower layer woven sieve 5 are sequentially arranged from top to bottom, the front end of the upper layer woven sieve 2 is connected with the tail end of the shaking plate 1, the front end of the upper layer woven sieve 2 and the shaking plate 1 are located on the same height plane, preferably, the sieve mesh size of the upper layer woven sieve 2 is 50mm multiplied by 50mm, so that the straw length characteristics of the straws in the regenerated rice thresher can be better adapted, the sieve mesh of the size can prevent most of the straws and part of the grown grass from falling into the middle layer louver sieve 3 and the lower layer woven sieve 5, the cleaning load of the middle layer louver sieve 3 and the lower layer woven sieve 5 is effectively reduced, the seed cleaning rate is improved, and smaller impurities such as seeds and blades can penetrate through the sieve mesh of the upper layer woven sieve 2.

The cleaning sieve frame comprises two opposite cleaning sieve side plates 7, the middle layer shutter sieve 3 is installed on the cleaning sieve side plates 7, the middle layer shutter sieve 3 comprises a sieve sheet 301, a plurality of first draft-line-chasing groups, a plurality of second draft-line-chasing groups and a cross beam assembly 304, the sieve sheet 301 is a long rectangular flat steel plate with the thickness of 3mm and without punching, the opening degree of the sieve sheet 301 can be adjusted between 15mm and 35mm, and the middle layer shutter sieve 3 has good air guiding capacity and high grain penetration rate due to the sheet, is suitable for the characteristic of high grain content of the regenerated rice thresher, and is beneficial to improving the cleaning efficiency.

The first rough draft strip group comprises two first rough draft strips 302 which are respectively arranged on two cleaning sieve side plates 7, the two first rough draft strips 302 are distributed in a splayed shape, preferably, an included angle alpha between the first rough draft strips 302 and the cleaning sieve side plates 7 is 15-30 degrees, and the included angle alpha faces the tail fish scale sieve 4, so that separated materials falling on two sides of the sieve surface can gather towards the middle of the sieve surface, materials are uniformly distributed on the sieve surface, the local cleaning load is reduced, and the cleaning effect is improved.

As shown in fig. 4, the cross bar assembly 304 is connected to the middle louver screen side 305 by bolts and nuts and is mounted on the cleaning screen side plate 7 together with the middle louver screen 3. As shown in fig. 1, the distance between the cross beams in the cross beam assemblies 304 is 4 times the distance between the louver screen plates 301, and each cross beam assembly is located right above the upper side of the louver screen plate 301, which does not affect the normal screening of the materials.

The second rough sketch bar group comprises a plurality of second rough sketch bars 303 which are parallel to each other, the second rough sketch bars 303 are arranged along the direction from the front to the back, the distance between the second rough sketch bars 303 is 50-80 mm as the optimization, the defect of poor pushing capacity of the shutter screen can be effectively overcome, the impurities such as blades with high water content and grass chippings are pushed to the screen tail by matching with air flow, and the accumulation of a large amount of materials on the screen surface is avoided.

The mesh size of the lower woven screen 5 is 20mm multiplied by 20mm, the front end of the tail fish scale screen 4 is connected with the tail end of the middle shutter screen 3, the tail fish scale screen 4 is arranged in an upward inclined mode, as shown in fig. 2, the included angle between the tail fish scale screen 4 and the horizontal plane is 5-10 degrees, the opening degree of the tail fish scale screen 4 can be adjusted between 15mm and 35mm, the size of the tail fish scale screen is extremely low in the stem content of the regenerated rice threshed objects, the space waste caused by the traditional straw-pushing screen is avoided, and the effective cleaning area of the cleaning screen is effectively increased.

As shown in fig. 3 and 7, the air deflector 6 is located below the shaking plate 1, the air duct below the shaking plate 1 is divided into an upper air duct and a lower air duct by the air deflector 6, and the air flow in the upper air duct is blown to the space between the upper woven screen 2 and the middle blind screen 3 through the gap between the shaking plate 1 and the middle blind screen 3; the air flow of the lower air duct blows to the space between the middle layer shutter screen 3 and the lower layer woven screen 5.

Will the cleaning sieve of the embodiment of the utility model be applied to the harvester, as shown in fig. 7, the air current that air outlet blew off sees through down the woven sieve 802 flow direction sieve tail under the cleaning fan 8. As shown in fig. 8, the regenerated rice threshed material falls from the threshing cylinder, one part falls on the shaking plate 1, the shaking plate 1 conveys the material backwards and gathers the material, and then the material is dispersed on the upper layer woven screen 2 closely connected with the shaking plate, and the other part of threshed material falls on the upper layer woven screen 2 directly. The upper layer woven screen 2 pushes the stalks and the long grass backwards to the screen tail and the outside of the machine by vibrating and matching with the airflow blown out by the upper air duct 601.

As shown in fig. 8, the rice threshed material falls into the middle layer louver screen 3 through the upper layer woven screen 2, the seeds in the threshed material quickly pass through the middle layer louver screen 3, and under the combined action of the screen sheet 301 and the lower air duct 602, the impurities with low floating coefficient such as the blades and the crushed grass are blown to the tail louver screen 4 by the air flow, after further cleaning, the non-threshed materials in the impurities fall into the secondary impurity auger 10 below the tail louver screen 4, and the rest impurities are pushed out of the machine.

The grains fall into the lower woven screen 5 through the middle layer shutter screen 3, and light impurities are blown to the screen tail and the outside of the machine through the airflow blown out by matching with the lower air outlet 802 of the cleaning fan 8; the seeds fall into a seed auger 9 right below the sorting screen.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. The utility model provides a multilayer sectional type regeneration rice seed clearance sieve which characterized in that includes: the cleaning screen frame, a shaking plate (1), an upper layer woven screen (2), a middle layer shutter screen (3), a tail fish scale screen (4) and a lower layer woven screen (5) are arranged on the cleaning screen frame;

the upper woven screen (2), the middle layer louver screen (3) and the lower woven screen (5) are sequentially arranged from top to bottom, the front end of the upper woven screen (2) is connected with the tail end of the shaking plate (1), the front end of the tail louver screen (4) is connected with the tail end of the middle layer louver screen (3), and the tail louver screen (4) is arranged in an upward inclined mode;

middle level shutter sieve (3) are including sieve piece (301), a plurality of first manuscript bar group and a plurality of second manuscript bar group of chasing, first manuscript bar group of chasing includes two install in first manuscript bar (302) of chasing on the cleaning screen frame, two first manuscript bar (302) of chasing is "eight" font and distributes, the second chasing manuscript bar group set up in the top of sieve piece (301), the second chasing manuscript bar group includes that a plurality of seconds that are parallel to each other chase manuscript bar (303), the second chasing manuscript bar (303) sets up along the direction after to in the past.

2. The multi-layer segmented regenerated rice seed cleaning sieve as claimed in claim 1, characterized in that the mesh size of the upper layer woven sieve (2) is 50mm x 50 mm.

3. The multilayer segmented regenerative rice grain cleaning screen as claimed in claim 1, characterized in that the shaking plate (1) and the upper woven screen (2) are located on the same level plane.

4. The multilayer segmented regenerative rice seed cleaning sieve according to claim 1, wherein the sieve sheet (301) is an un-punched long rectangular flat steel plate, the thickness of the sieve sheet (301) is 3mm, and the opening degree of the sieve sheet (301) is 15mm to 35 mm.

5. A multi-layered segmented regenerative rice seed cleaning screen according to claim 1, characterized in that the cleaning screen frame comprises two opposite cleaning screen side plates (7), the middle layer louver screen (3) is mounted on the cleaning screen side plates (7), the included angle α between the first straw-chasing bar (302) and the cleaning screen side plates (7) is 15-30 °, and the included angle α is towards the tail louver screen (4).

6. The multi-layer segmented regenerated rice seed cleaning screen as claimed in claim 1, wherein the spacing between the second straw-by-straw (303) within the second straw-by-straw group is 50mm to 80 mm.

7. The multilayer segmented regenerated rice seed cleaning screen according to claim 1, characterized in that the mesh size of the lower woven screen (5) is 20mm x 20 mm.

8. The multilayer segmented regenerated rice grain cleaning sieve as claimed in claim 1, characterized in that the angle between the tail fish-scale sieve (4) and the horizontal plane is 5-10 °.

9. The multilayer segmented regenerated rice seed cleaning sieve according to claim 1, characterized in that the opening degree of the tail fish-scale sieve (4) is 15-35 mm.

10. The multilayer sectional type regenerated rice grain cleaning sieve according to claim 1, characterized by further comprising an air deflector (6), wherein the air deflector (6) is positioned below the shaking plate (1), the air deflector (6) divides an air duct below the shaking plate (1) into an upper air duct and a lower air duct, and air flow in the upper air duct is blown to a position between the upper woven sieve (2) and the middle louver sieve (3) through a space between the shaking plate (1) and the middle louver sieve (3); and the air flow of the lower air duct blows to a space between the middle layer shutter screen (3) and the lower layer woven screen (5).

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