CN213784262U - Rethresher, combination formula rethresher and cleaning system - Google Patents
Rethresher, combination formula rethresher and cleaning system Download PDFInfo
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- CN213784262U CN213784262U CN202022666167.5U CN202022666167U CN213784262U CN 213784262 U CN213784262 U CN 213784262U CN 202022666167 U CN202022666167 U CN 202022666167U CN 213784262 U CN213784262 U CN 213784262U
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Abstract
The utility model provides a rethresher relates to agricultural mechanization technical field. The rethresher comprises a roller, an outer baffle, a plurality of movable scraping teeth and a plurality of fixed scraping teeth; the outer baffle is arranged outside the side wall of the roller; one side of the outer baffle plate facing the roller is provided with a curved surface; the movable scraping teeth are arranged on the circumferential surface of the roller, and the fixed scraping teeth are arranged on the curved surface; the distance between the free end of the fixed scraping tooth and the curved surface is greater than the minimum distance between the free end of the movable scraping tooth and the curved surface; the movable scraping teeth and the fixed scraping teeth are staggered along the axial direction of the roller. The utility model discloses a re-threshing device utilizes the movement on the cylinder to scrape the tooth and the fixed relative motion between scraping the tooth on the outer baffle, realizes the threshing operation of vegetables and fruits such as hot pepper, peanut, sweet potato. On the basis, the utility model also provides a modular rethresher and cleaning system.
Description
Technical Field
The utility model relates to an agricultural mechanization technical field particularly, relates to a rethresher, combination formula rethresher and cleaning system.
Background
At present, most of pepper harvesting and cleaning processes realize mechanized operation. However, most pepper harvesters suitable for harvesting on the market are not provided with an effective fruit separation device, or only raised washboard teeth are arranged on the inner wall of a conveying pipeline to continuously rub grains to realize re-threshing, so that a large amount of stems with fruits still enter a bin after pepper harvesting, and a large amount of manpower is needed to perform manual repeated cleaning in the later stage, so that the separation efficiency of the fruits and the stems is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rethresher, combination formula rethresher and cleaning system, it helps solving above-mentioned technical problem.
The utility model discloses a realize like this:
a rethresher comprises a roller, an outer baffle, a plurality of movable scraping teeth and a plurality of fixed scraping teeth; the outer baffle is arranged outside the side wall of the roller; one side of the outer baffle plate facing the roller is provided with a curved surface; the movable scraping teeth are arranged on the circumferential surface of the roller, and the fixed scraping teeth are arranged on the curved surface; the distance between the free end of the fixed scraping tooth and the curved surface is greater than the minimum distance between the free end of the movable scraping tooth and the curved surface; the movable scraping teeth and the fixed scraping teeth are staggered along the axial direction of the roller.
When the re-threshing device is used, the roller drives the movable scraping teeth to rotate, and the outer baffle and the fixed scraping teeth are relatively static. Because the distance between the free end of the fixed scraping teeth and the curved surface is greater than the minimum distance between the free end of the movable scraping teeth and the curved surface, and the movable scraping teeth and the fixed scraping teeth are staggered along the axial direction of the roller. In the rotation process of the roller, the fruits and vegetables such as hot peppers, peanuts, sweet potatoes and the like can be stirred between the fixed scraping teeth and the movable scraping teeth, so that the fruits and the stalks are thoroughly separated.
Furthermore, the plurality of movable scraping teeth are divided into a plurality of first scraping tooth groups, and the plurality of first scraping tooth groups are distributed around the circumferential direction of the roller; the first scraping tooth group comprises a plurality of movable scraping teeth distributed along the axial direction of the roller; the curved surface is a part of a cylindrical surface, the curved surface is coaxial with the roller, the plurality of fixed scraping teeth are divided into a plurality of second scraping tooth groups, and the plurality of second scraping tooth groups are distributed around the circumferential direction of the roller; the second scraping tooth group comprises a plurality of fixed scraping teeth distributed along the axial direction of the roller. The technical effects are as follows: the movable scraping teeth and the fixed scraping teeth which are arranged according to a specific rule are more beneficial to uniform stirring, and the problems that the threshing of fruits and vegetables is not thorough or the local stress of the roller and the outer baffle plate is overlarge due to the over concentration of stalks are avoided.
Further, the fixed scraping teeth are capable of moving relative to the movable scraping teeth along the axial direction of the roller and used for changing the distance between the movable scraping teeth and the fixed scraping teeth. The technical effects are as follows: the characteristic of the distance between the movable scraping teeth and the fixed scraping teeth can be changed, so that the re-threshing device can meet the harvesting and threshing operation of various different crops according to the requirement.
Furthermore, a plurality of mounting seats are arranged on the outer baffle, and all the fixed scraping teeth on one second scraping tooth group are fixedly mounted on one mounting seat; the mounting seat can move along the axial direction of the roller. The technical effects are as follows: a whole row of the fixed scraping teeth are fixedly arranged on one mounting seat, and the distance between the fixed scraping teeth and the movable scraping teeth can be integrally changed by moving the relative position between the mounting seat and the outer baffle.
Furthermore, a plurality of strip-shaped holes are formed in the outer baffle plate, and the strip-shaped holes extend along the axial direction of the roller; the mounting seat 500 is fixedly mounted on the outer barrier 300 through bolts penetrating through the strip-shaped holes. The technical effects are as follows: through the cooperation in bolt and bar hole, the mount pad can be for outer baffle activity in the axis direction of cylinder, utilizes the bolt to realize fixing in suitable position.
Further, the outer baffle is a hollow structure. The technical effects are as follows: the outer baffle plate is used for installing the fixed scraping teeth on one hand, and the function of the outer baffle plate is filtering, namely the stirred and separated fruits flow to the next process from the hollow structure, and the rest stalks flow to the other process from the other outlet of the outer baffle plate.
The combined rethresher comprises at least two rethreshers, the axes of all the rollers are parallel to each other and are positioned on the same plane, two adjacent outer baffles are connected with each other, and all the outer baffles are positioned on the same side of the plane.
Further, the minimum distance between the outer walls of two adjacent rollers is set to be D, the radial distances of the movable scraping teeth on the two adjacent rollers along the rollers where the movable scraping teeth are respectively located are L and H, and the sum of the L and the H is larger than D. The technical effects are as follows: in the structural design, the movable scraping teeth on two adjacent rollers are staggered with each other in the rotating process of the rollers, wherein the movable scraping teeth on one roller are equivalent to the fixed scraping teeth, and the movable scraping teeth on the other roller play a role in stirring.
Further, the device also comprises a fixed beam; all the rollers are arranged on the fixed beam through bearings. The technical effects are as follows: because the combined rethresher is additionally provided with the rollers, double or multiple stirring threshing of fruits and vegetables is realized, the movable scraping teeth between two adjacent rollers are mutually staggered in the rotating process of the rollers, and all the rollers are fixedly arranged on a fixed beam through bearings in order to prevent the two adjacent rollers from mutually repelling or dragging.
A cleaning system comprises a first cleaning roller, a second cleaning roller, a third cleaning roller and a combined type rethresher, wherein the first cleaning roller passes through an outer baffle and the second cleaning roller are connected, and the outer baffle is positioned between a roller and the third cleaning roller.
The utility model has the advantages that:
the utility model discloses a rethresher, combination formula rethresher and cleaning system utilize along with the cylinder and the pivoted move scrape tooth and outer baffle on static decide scrape the relative motion between the tooth, separate the fruit of vegetables such as hot pepper, peanut, sweet potato from the stem and drop, reduce the human cost that the fruit was cleaned, improve the separation efficiency of fruit and stem.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a rethresher according to a first embodiment of the present invention;
fig. 2 is a schematic view of a first perspective structure of a roller and a movable scraping tooth in a rethresher according to a second embodiment of the present invention;
fig. 3 is a second view structural diagram of a roller and a movable scraping tooth in a rethresher according to a second embodiment of the present invention;
fig. 4 is a schematic structural view of an outer baffle and a fixed scraping tooth in a rethresher according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a rethresher according to a third embodiment of the present invention;
fig. 6 is a schematic structural view of an outer baffle and a fixed scraping tooth in a rethresher according to a third embodiment of the present invention;
fig. 7 is a schematic structural view of a joint between an outer baffle and a fixed scraping tooth in a rethresher according to a third embodiment of the present invention;
fig. 8 is a schematic structural view of a combined rethresher according to a fourth embodiment of the present invention;
fig. 9 is a schematic structural view of a cleaning system according to a fifth embodiment of the present invention.
Icon: 100-a roller; 200-moving scraping teeth; 201-locking nut; 300-an outer baffle; 400-fixing scraping teeth; 500-a mounting seat; 600-a fixed beam; 700-a first cleaning roll; 800-a second cleaning roll; 900-third cleaning roller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The first embodiment:
fig. 1 is a schematic structural view of a rethresher according to a first embodiment of the present invention. Referring to fig. 1, the present embodiment provides a rethresher, which includes a drum 100, an outer baffle 300, a plurality of movable scraping teeth 200, and a plurality of fixed scraping teeth 400.
Wherein the outer barrier 300 is disposed outside the sidewall of the drum 100; the side of the outer barrier 300 facing the drum 100 is provided with a curved surface; the movable scraping teeth 200 are arranged on the circumferential surface of the roller 100, and the fixed scraping teeth 400 are arranged on the curved surface; the distance between the free end of the fixed scraping tooth 400 and the curved surface is greater than the minimum distance between the free end of the movable scraping tooth 200 and the curved surface; the movable scraping teeth 200 and the fixed scraping teeth 400 are staggered along the axial direction of the roller 100.
The working principle and the operation method of the rethresher are as follows:
in use, the roller 100 rotates the plurality of movable scraping teeth 200, and the outer baffle 300 and the plurality of fixed scraping teeth 400 are stationary. Since the distance between the free end of the fixed scraping tooth 400 and the curved surface is greater than the minimum distance between the free end of the movable scraping tooth 200 and the curved surface, the movable scraping tooth 200 and the fixed scraping tooth 400 are staggered in the axial direction of the drum 100. In the rotation process of the drum 100, the fruits and vegetables such as peppers, peanuts, sweet potatoes and the like can be stirred between the fixed scraping teeth 400 and the movable scraping teeth 200 so as to completely separate the fruits from the stalks.
It should be noted that, firstly, the movable scraping teeth 200 and the fixed scraping teeth 400 should be curved, and the curved direction is the same as the rotation direction of the stalks of the fruits and vegetables, so as to facilitate stirring and prevent the stalks from being easily wound. Secondly, the movable scraping teeth 200 are fixed on the drum 100 in a threaded manner, the fixed scraping teeth 400 are fixed on the outer baffle 300 in a threaded manner, and in order to prevent the movable scraping teeth 200 and the fixed scraping teeth 400 from rotating along with the stalks during the operation, a locking nut 201 is previously arranged on the movable scraping teeth 200 and the fixed scraping teeth 400 for locking the positioning positions of the two scraping teeth.
Optionally, in order to prevent the movable scraping teeth 200 and the fixed scraping teeth 400 from rotating along with the stalks during the operation, the installation ends of the movable scraping teeth 200 and the fixed scraping teeth 400 may be set to be polygonal rods with rectangular, rhombic and hexagonal cross sections, and then the fixed scraping teeth are fixed by the locking bolts to prevent loosening and falling during the operation.
In order to set the density of the two scraping teeth, the mounting screw holes on the roller 100 and the outer baffle 300 should be set sufficiently, and part of the mounting screw holes are selected for mounting according to actual needs.
Further, in order to satisfy the threshing operation of different crops, the motor of the drum 100 is a stepping motor with adjustable speed, and the rotating speed of the drum 100 is adjusted according to needs.
Second embodiment:
fig. 2 is a schematic view illustrating a first perspective structure of a roller 100 and a movable scraping tooth 200 in a rethresher according to a second embodiment of the present invention; fig. 3 is a second perspective structural diagram of the roller 100 and the movable scraping teeth 200 in the rethresher according to the second embodiment of the present invention; fig. 4 is a schematic structural view of an outer baffle 300 and a fixed scraping tooth 400 in a rethresher according to a second embodiment of the present invention. Referring to fig. 2, 3 and 4, the present embodiment provides a rethresher, which is substantially the same as the rethresher of the first embodiment, and the difference between the rethresher of the present embodiment is that the plurality of movable scraping teeth 200 in the rethresher of the present embodiment are divided into a plurality of first scraping tooth groups, and the plurality of first scraping tooth groups are distributed around the circumference of the drum 100; the first scraping tooth group comprises a plurality of movable scraping teeth 200 distributed along the axial direction of the roller 100; the curved surface is a part of a cylindrical surface, the curved surface is coaxial with the roller 100, the plurality of fixed scraping teeth 400 are divided into a plurality of second scraping tooth groups, and the plurality of second scraping tooth groups are distributed around the circumferential direction of the roller 100; the second scraping tooth group includes a plurality of fixed scraping teeth 400 distributed along the axial direction of the drum 100.
Wherein, the plurality of rows of movable scraping teeth 200 are preferably evenly distributed around the circumference of the roller 100, and the plurality of rows of fixed scraping teeth 400 are preferably evenly distributed around the circumference of the roller 100. The movable scraping teeth 200 and the fixed scraping teeth 400 which are arranged according to a specific rule are more beneficial to uniform stirring, and the problems that the fruit and vegetable are not threshed completely or the local stress of the roller 100 and the outer baffle 300 is overlarge due to the over concentration of the stalks are avoided.
The third embodiment:
fig. 5 is a schematic structural view of a rethresher according to a third embodiment of the present invention; fig. 6 is a schematic structural view of an outer baffle 300 and a fixed scraping tooth 400 in a rethresher according to a third embodiment of the present invention; fig. 7 is a schematic structural view of a joint between an outer baffle 300 and a fixed scraping tooth 400 in a rethresher according to a third embodiment of the present invention. Referring to fig. 5, 6 and 7, the present embodiment provides a rethresher, which is substantially the same as the rethresher of the second embodiment, except that the fixed scraping teeth 400 of the rethresher of the present embodiment can move along the axial direction of the drum 100 relative to the movable scraping teeth 200, so as to change the distance between the movable scraping teeth 200 and the fixed scraping teeth 400.
Further, as shown in fig. 7, the outer baffle 300 is provided with a plurality of mounting seats 500, and all the fixed scraping teeth 400 of one second scraping tooth group are fixedly mounted on one mounting seat 500; the mount 500 is movable in the axial direction of the drum 100.
One of the mounting seats 500 fixedly mounts a row of the scraping teeth 400, and the distance between the row of the scraping teeth 400 and the movable scraping teeth 200 can be integrally changed by moving the relative position between the mounting seat 500 and the outer baffle 300. Preferably, the mounting seat 500 is made of angle steel.
Further, the outer baffle 300 is provided with a plurality of strip-shaped holes, and the strip-shaped holes extend along the axial direction of the drum 100; the bolts penetrate through the strip-shaped holes to fixedly mount the mounting seat 500 on the outer baffle 300. At this time, the mounting seat 500 is movable in the axial direction of the drum 100 with respect to the outer barrier 300 by the engagement of the bolt and the strip hole, and is fixed by the bolt at an appropriate position.
Wherein, the mounting seat 500 can also be mounted on the roller 100 to realize the movable mounting of the movable scraping tooth 200. However, for the rotational stability of the drum 100, the installation movement amount of the movable scraping teeth 200 should be avoided as much as possible, and the distance between the two scraping teeth should be changed only by adjusting the fixed scraping teeth 400.
The re-threshing device of the embodiment can change the characteristic of the distance between the movable scraping teeth 200 and the fixed scraping teeth 400, so that the re-threshing device can meet the harvesting and threshing operations of various different crops according to the requirements.
On the basis of any of the above embodiments, further, the outer baffle 300 is a hollow structure. Wherein, the outer baffle 300 is used for installing the fixed scraping teeth 400 on one hand, and the other hand is used for filtering, namely, the stirred and separated fruits flow to the next process from the hollow structure, and the rest stalks flow to the other process from the other outlet of the outer baffle 300.
The fourth embodiment:
fig. 8 is a schematic structural view of a combined rethresher according to a fourth embodiment of the present invention. Referring to fig. 8, the present embodiment provides a combined rethresher, which includes at least two rethreshers according to any of the above embodiments, wherein the axes of all the rollers 100 are parallel to each other and located on the same plane, two adjacent outer baffles 300 are connected to each other, and all the outer baffles 300 are located on the same side of the plane.
The direction in which the rollers 100 are sequentially arranged is the moving direction of the fruits and vegetables on the harvester, and when the rollers 100 rotate, the fruits and vegetables can be threshed for many times.
Further, as shown in fig. 8, when the minimum distance between the outer walls of two adjacent rollers 100 is set to be D, and the radial distances between the movable scraping teeth 200 on two adjacent rollers 100 along the respective rollers 100 are L and H, respectively, the sum of L and H is greater than D.
Wherein, the movable scraping teeth 200 on two adjacent rollers 100 are staggered with each other during the rotation of the rollers 100, wherein the movable scraping teeth 200 on one roller 100 are equivalent to the fixed scraping teeth 400 and the movable scraping teeth 200 on the other roller 100 play a role of stirring.
Further, as shown in fig. 8, a fixing beam 600 is further included; all the rollers 100 are disposed on the fixed beam 600 through bearings. In this structure, all the rollers 100 are fixedly mounted on one fixing beam 600 by means of bearings, and thus it is possible to prevent the adjacent two rollers 100 from repelling or pulling each other.
Fifth embodiment:
fig. 9 is a schematic structural view of a cleaning system according to a fifth embodiment of the present invention. Referring to fig. 9, the embodiment provides a cleaning system, which includes a first cleaning roller 700, a second cleaning roller 800, a third cleaning roller 900 and the combined type rethresher of any of the above embodiments, the first cleaning roller 700 is connected with the second cleaning roller 800 through an outer baffle 300, and the outer baffle 300 is located between the drum 100 and the third cleaning roller 900.
At the moment, the cleaning system has the following working procedures:
as shown in fig. 9, the stems with the fruits enter the first drum 100 of the combined rethresher through the first cleaning roll 700 or the conveying mechanism, and a part of the fruits is separated from the stems by the offset impact of the fixed scraping teeth 400 and the movable scraping teeth 200 and falls from the apertures of the first outer barrier 300 to the third cleaning roll 900. The remaining non-peeled fruit continues to move along with the stem to the second drum 100 along with the movable scraping teeth 200, and the previous work is repeated to perform the second peeling. The detached fruit drops from the pores of the second outer barrier 300 to the third cleaning roller 900. Finally, the stalk follower scraping teeth 200 are thrown from the second drum 100 onto the second cleaning roll 800. The detached fruit is conveyed to the next stage, and the stalks are conveyed from the second cleaning roll 800 to another process. And the cleaning system finishes the work. If the number of the rollers 100 is increased, the above implementation process is repeatedly increased in sequence. When the working stem crops are changed, the number of the fixed scraping teeth 400 and the movable scraping teeth 200 can be reduced or increased, or the distance between the fixed scraping teeth 400 and the movable scraping teeth 200 can be adjusted, and the impact force can be adjusted by changing the rotating speed of the roller 100, so that the stem and fruit separating operation of different stem crops can be adapted.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rethresher is characterized by comprising a roller (100), an outer baffle (300), a plurality of movable scraping teeth (200) and a plurality of fixed scraping teeth (400);
the outer baffle (300) is disposed outside a sidewall of the drum (100); one side of the outer baffle (300) facing the roller (100) is provided with a curved surface;
the movable scraping teeth (200) are arranged on the circumferential surface of the roller (100), and the fixed scraping teeth (400) are arranged on the curved surface;
the distance between the free end of the fixed scraping tooth (400) and the curved surface is greater than the minimum distance between the free end of the movable scraping tooth (200) and the curved surface; the movable scraping teeth (200) and the fixed scraping teeth (400) are staggered along the axial direction of the roller (100).
2. The rethresher according to claim 1, wherein a plurality of said movable scraping teeth (200) are divided into a plurality of first scraping tooth groups, distributed around the circumference of said drum (100); the first scraping tooth group comprises a plurality of movable scraping teeth (200) distributed along the axial direction of the roller (100);
the curved surface is a part of a cylindrical surface, the curved surface is coaxial with the roller (100), the plurality of fixed scraping teeth (400) are divided into a plurality of second scraping tooth groups, and the plurality of second scraping tooth groups are distributed around the circumference of the roller (100); the second scraping tooth group comprises a plurality of fixed scraping teeth (400) distributed along the axial direction of the roller (100).
3. The rethresher according to claim 2, wherein said fixed scraping teeth (400) are movable with respect to said moving scraping teeth (200) along the axial direction of said drum (100) for varying the distance between said moving scraping teeth (200) and said fixed scraping teeth (400).
4. The rethresher of claim 3, wherein a plurality of mounting seats (500) are arranged on the outer baffle (300), and all the fixed scraping teeth (400) of one second scraping tooth group are fixedly mounted on one mounting seat (500); the mount (500) is movable in an axial direction of the drum (100).
5. The rethresher according to claim 4, wherein said outer baffle (300) is provided with a plurality of strip-shaped holes extending in the axial direction of the drum (100); the mounting seat (500) is fixedly mounted on the outer baffle (300) through bolts penetrating through the strip-shaped holes.
6. The rethresher of claim 1, wherein said outer baffle (300) is a hollowed out structure.
7. A combined rethresher, comprising at least two rethreaders according to any one of claims 1 to 6, wherein the axes of all the drums (100) are parallel to each other and are located on the same plane, and wherein two adjacent external baffles (300) are connected to each other, and wherein all the external baffles (300) are located on the same side of the plane.
8. The combined rethresher of claim 7, wherein a minimum distance between outer walls of two adjacent rollers (100) is set to be D, radial distances of the movable scraping teeth (200) on the two adjacent rollers (100) along the respective rollers (100) are respectively L and H, and the sum of L and H is larger than D.
9. The combined rethresher of claim 8, further comprising a fixed beam (600); all the rollers (100) are arranged on the fixed beam (600) through bearings.
10. A cleaning system, characterized in that, include first cleaning roller (700), second cleaning roller (800), third cleaning roller (900) and according to any one of claims 7-9 combination formula rethresher, first cleaning roller (700) pass through outer baffle (300) with second cleaning roller (800) are connected, outer baffle (300) are located cylinder (100) with between the third cleaning roller (900).
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