CN117397468B - Corn threshing double-roller with inner and outer coaxial twin longitudinal axial flow - Google Patents
Corn threshing double-roller with inner and outer coaxial twin longitudinal axial flow Download PDFInfo
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- CN117397468B CN117397468B CN202311708520.3A CN202311708520A CN117397468B CN 117397468 B CN117397468 B CN 117397468B CN 202311708520 A CN202311708520 A CN 202311708520A CN 117397468 B CN117397468 B CN 117397468B
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- 240000008042 Zea mays Species 0.000 title claims abstract description 49
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 49
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 48
- 235000005822 corn Nutrition 0.000 title claims abstract description 48
- 239000012535 impurity Substances 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 13
- 210000005069 ears Anatomy 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010009 beating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F11/00—Threshing apparatus specially adapted for maize; Threshing apparatus specially adapted for particular crops other than cereals
- A01F11/06—Threshing apparatus specially adapted for maize; Threshing apparatus specially adapted for particular crops other than cereals for maize, e.g. removing kernels from cobs
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/10—Feeders
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Abstract
The invention discloses an internal and external coaxial twin longitudinal axial flow corn threshing double roller, which relates to the technical field of corn threshing and comprises the following components: the inner cylinder body and the outer cylinder body are coaxially arranged in a twinning way, and the outer cylinder body is provided with a hollowed-out structure along the axial direction of the outer cylinder body in the circumferential direction of the outer cylinder body; the outer spiral feeding head is fixed at the front end of the outer cylinder, the inner spiral feeding head is fixed at the front end of the inner cylinder, the inner spiral feeding head and the outer spiral feeding head are coaxially matched, at least two spiral blades are arranged at intervals in the circumferential directions of the outer spiral feeding head and the inner spiral feeding head, and a big head end of the outer spiral feeding head is provided with double-side arc-shaped openings; the threshing device is spirally arranged on the circumferences of the outer cylinder body and the inner cylinder body; the impurity removing device is arranged at the other end circumferences of the outer cylinder body and the inner cylinder body; the driving device is arranged at the outer sides of the inner cylinder body and the outer cylinder body and is used for driving the outer cylinder body and the inner cylinder body to reversely rotate, and the inner spiral feeding head and the outer spiral feeding head are reversely arranged. The threshing machine has the characteristics of improving the threshing efficiency of the ears of corn, being compact in structure and good in threshing effect.
Description
Technical Field
The invention relates to the technical field of corn threshing, in particular to an internal and external coaxial twin longitudinal axial flow corn threshing double roller.
Background
Today, the agricultural mechanization level is continuously improved, and the corn production efficiency is also remarkably improved. The corn threshing is used as a crucial step in the corn production and harvesting process, and the corn threshing operation can be efficiently, high-quality and low-loss completed, so that the corn loss can be reduced, the grain safety is ensured, and the economic, social and ecological benefits are increased.
The existing single-longitudinal axis flow corn threshing device mainly adopts the principle of impact and friction threshing, namely, seeds adhered to corn cobs are relatively moved through contact of threshing elements on a roller, so that the threshing aim is fulfilled, and under the general condition, the diameter range of the single-longitudinal axis flow threshing roller is 550-650 mm, the diameter is 750mm, the design of the inner space of the roller is not compact enough, and energy loss and waste are easily caused; when the double vertical axial flow threshing cylinder works, the crop crushing rate is higher, and the grain waste is easily caused. There is thus an urgent need for improvements to existing threshing cylinders.
Disclosure of Invention
The invention aims to design and develop a twin drum for threshing corn with coaxial internal and external twin longitudinal axial flow, and by combining the twin drum with an internal and external spiral feeding head, the blockage caused by excessive feeding quantity of corn is avoided, and the space utilization rate and threshing efficiency are improved.
The technical scheme provided by the invention is as follows:
a twin axial flow corn threshing twin drum comprising:
the outer cylinder body is of a cylindrical structure, and hollow structures are arranged on the outer cylinder body at intervals along the axial direction of the outer cylinder body in the circumferential direction;
the inner cylinder body is of a cylindrical structure and is coaxially arranged in the outer cylinder body at intervals;
the outer spiral feeding head is of a hollow structure and is provided with at least two first spiral blades at intervals in the circumferential direction, the outer spiral feeding head comprises a first big head end and a first small head end, the first big head end is fixed at one end of the outer cylinder body, and the first big head end is provided with double-side arc-shaped openings;
the inner spiral feeding head is circumferentially provided with at least two second spiral blades at intervals, is fixed at one end of the inner cylinder body and is rotatably arranged in the outer spiral feeding head;
the threshing devices are spirally arranged in the circumferential direction of the outer cylinder body and the inner cylinder body, and the threshing devices and the hollow structures are alternately arranged at intervals;
the impurity removing device is arranged at the other end circumferences of the outer cylinder body and the inner cylinder body;
and the driving device is arranged at the outer sides of the inner cylinder body and the outer cylinder body and is used for driving the outer cylinder body and the inner cylinder body to reversely rotate.
Preferably, the hollow structure is a round tube-like concave plate structure, and the distance between the hollow structures on the same plane is larger than the size of the corn seeds.
Preferably, the method further comprises:
the connecting plate is arranged in the outer spiral feeding head and is parallel to the first big head end;
the through holes are circularly distributed outside the center of the connecting plate;
the concave platforms are distributed on the outer sides of the through holes in a round shape.
Preferably, the double-sided arc-shaped openings are symmetrically arranged in the circumferential direction of the outer spiral feeding head, and the height of the double-sided arc-shaped openings is smaller than that of the inner spiral feeding head.
Preferably, the inner spiral feeding head comprises a second big end and a second small end, wherein a plurality of bosses are distributed along the center of the second big end in a circular shape, the bosses and the concave tables can be mutually clamped, and the second small end is fixed at one end of the inner cylinder body.
Preferably, the threshing device comprises:
a plurality of threshing elements which are arranged at intervals in a spiral manner along the axial direction of the outer cylinder and the inner cylinder and are arranged in the circumferential direction of the outer cylinder and the inner cylinder;
a plurality of threshing separation elements which are arranged at intervals in a spiral manner along the axial direction of the outer cylinder and the inner cylinder in the circumferential direction of the outer cylinder and the inner cylinder;
the threshing elements and the threshing separation elements are distributed in the same spiral line, the threshing elements are arranged at 4/7 positions of an outer cylinder body and an inner cylinder body close to an outer spiral feeding head and an inner spiral feeding head, the threshing separation elements are arranged at 3/7 positions of the outer cylinder body and the inner cylinder body close to the impurity discharging device, and the interval between the threshing separation elements is larger than that between the threshing elements.
Preferably, the impurity removing device includes:
the 2 outer impurity discharging plates are symmetrically arranged at the circumference of the other end of the outer cylinder body, and a hollow structure is arranged between the 2 outer impurity discharging plates;
the 2 inner impurity discharging plates are symmetrically arranged at the periphery of the other end of the inner cylinder body;
the cover plate is detachably arranged at the other end of the outer cylinder body;
wherein, interior barrel with the apron interval sets up.
Preferably, the driving device includes:
a first motor and a second motor;
the hollow shaft is fixed on the outer spiral feeding head and is connected with the output end of the first motor;
the solid shaft is coaxially and rotatably arranged in the hollow shaft and is fixed on the inner spiral feeding head, and the solid shaft is connected with a second motor;
wherein the hollow shaft and the solid shaft are turned in opposite directions, and the solid shaft rotatably penetrates through the cover plate.
Preferably, the threshing element is a rasp bar threshing element, and the threshing separation element is a round head type spike tooth element.
Preferably, the diameter of the outer cylinder is equal to the diameter of the big head end of the outer spiral feeding head, and the diameter of the inner cylinder is equal to the diameter of the small head end of the inner spiral feeding head.
The beneficial effects of the invention are as follows:
the invention designs and develops the inner and outer coaxial twin longitudinal axial flow corn threshing double rollers, and for crops with large feeding quantity, the spiral feeding head can orderly and evenly feed the crops into the inner and outer double rollers for threshing through rotation, so that blockage caused by excessive feeding quantity is avoided; through the twin drum structure of inside and outside, when outer cylinder threshing, the inner space can be fully utilized, is favorable to improving the ear threshing efficiency of maize, compact structure, threshing effect is good, and this upgrading scheme is applicable to current combine, can be convenient popularization and application in actual production.
Drawings
Fig. 1 is a schematic structural view of an inner-outer coaxial twin longitudinal axial flow corn threshing double drum.
Fig. 2 is a schematic diagram of an assembly structure of the inner cylinder according to the present invention.
FIG. 3 is a schematic view of a side structure of the outer screw feed head and the inner screw feed head according to the present invention.
FIG. 4 is a schematic view of the other side of the outer screw feed head and the inner screw feed head according to the present invention.
Fig. 5 is a schematic structural view of the cover plate according to the present invention.
Fig. 6 is a schematic cross-sectional view of the inner and outer coaxial twin longitudinal axial flow corn threshing double-drum according to the invention.
Fig. 7 is a schematic view of an assembly structure of the cover plate according to the present invention.
Fig. 8 is a schematic longitudinal section structure of the inner and outer coaxial twin longitudinal axial flow corn threshing double roller.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention by reference to the specification.
As shown in fig. 1 and 2, the dual inner-outer coaxial twin longitudinal axis corn threshing cylinder provided by the invention mainly comprises:
the threshing device comprises an outer cylinder 110, an outer spiral feeding head 120, an inner cylinder 160, an inner spiral feeding head 170, a threshing device, a trash discharging device and a driving device.
The inner cylinder 160 and the outer cylinder 110 are two cylinders which are coaxially arranged and are twin inside and outside, the inner cylinder 160 and the outer cylinder 110 are of cylindrical structures, the outer cylinder 110 is of a semi-open cylinder structure, round-tube-like concave plate-shaped hollow structures 130 are circumferentially arranged on the outer cylinder 110, the outer cylinder 110 is designed to enable a threshing cavity to be formed between the inner cylinder 160 and the outer cylinder 110, threshing efficiency of the inner cylinder 160 can be improved, meanwhile, fallen seeds are screened, the inner cylinder 160 is of a closed threshing cylinder, and the situation that the seeds enter the axis of the threshing cylinder is avoided.
The spacing of the hollow structures 130 on the same plane is larger than the size of the corn kernels, so that the corn kernels can fall off and flow out conveniently.
As shown in fig. 3 and fig. 4, the front ends of the outer spiral feeding head 120 and the inner spiral feeding head 170 are corn ears as inlets, the outer spiral feeding head 120 is of a hollow conical structure, at least two first spiral blades 121 are arranged at intervals in the circumferential direction of the outer spiral feeding head 120, the outer spiral feeding head 120 comprises a first big end and a first small end, the first big end is fixed at one end of the outer cylinder 110, the diameter of the first big end is equal to that of the outer cylinder 110, and double-side arc openings 124 are arranged at the first big end; the inner screw feeding head 170 is of a conical structure, at least two second screw blades 171 are arranged at intervals in the circumferential direction of the inner screw feeding head 170, the inner screw feeding head 170 comprises a second big head end and a second small head end, the second small head end is fixed at one end of the inner cylinder 160 through welding, the diameter of the second small head end is equal to that of the inner cylinder 160, the inner screw feeding head 170 is rotatably arranged inside the outer screw feeding head 120, and the inner screw feeding head 170 and the outer screw feeding head 120 are reversely arranged.
In this embodiment, the outer screw feeding head 120 is provided with a connecting plate 124, and the connecting plate 124 is parallel to the first big end of the outer screw feeding head 120, a plurality of through holes 122 are circularly distributed on the outer side of the center of the connecting plate 124, a plurality of concave tables 123 are circularly distributed on the outer side of the through holes 122, a plurality of convex tables 172 are circularly distributed on the second big end along the center of the second big end, and the plurality of convex tables 172 and the plurality of concave tables 123 can be mutually clamped, so that the inner screw feeding head and the outer screw feeding head can be coaxially matched, and the inner screw feeding head and the outer screw feeding head can prevent dust accumulation through the matching of the concave tables and the through holes 122.
The height of the double-sided arc-shaped opening 124 is smaller than that of the inner screw feeding head 170, so that the ears can conveniently enter the inner screw feeding head 170.
In the present embodiment, the number of the first screw blades 121 and the second screw blades 171 is preferably equal to two, so that balance is maintained, and preferably, the number of the first screw blades 121 and the second screw blades 171 is 2, so that the maximum feeding amount can be achieved without clogging.
In this embodiment, the first spiral blade 121 and the second spiral blade 171 are disposed in opposite directions of rotation.
The threshing device comprises: the threshing elements 140 and the threshing separation elements 150 are arranged at intervals in a spiral manner along the axial direction of the outer cylinder 110 in the circumferential direction of the outer cylinder 110, and are also arranged at intervals in a spiral manner along the axial direction of the inner cylinder 160 in the circumferential direction of the inner cylinder 160, and the threshing elements and the threshing concave plates (the hollow structure 130 and the concave plates outside the whole device) are used for beating, colliding and kneading the ears to realize threshing; the threshing separation elements 150 are also arranged at intervals in a spiral manner in the circumferential direction of the outer cylinder 110 and the inner cylinder 160, can rapidly and effectively separate the threshed corn kernels from the bracts, the mandrels and the like, and further thresh the incompletely threshed ears so as to ensure good threshing and separating effects, the threshing elements 140 and the threshing separation elements 150 are distributed in the same spiral line, the threshing elements 140 are arranged at the front 4/7 part of the outer cylinder 110 and the inner cylinder 160 close to the outer spiral feeding head 120 and the inner spiral feeding head 170, the threshing separation elements 150 are arranged at the rear 3/7 part of the outer cylinder 110 and the inner cylinder 160 close to the impurity removing device, the intervals of the threshing separation elements 150 are larger than those of the threshing elements 140, and the threshed corn kernels are matched with the external device to effectively and rapidly separate the mandrels and the kernels so as to ensure good separating effects.
The threshing elements 140 and the threshing separation elements 150 on the outer cylinder 110 are alternately arranged with the hollow structure 130 at intervals.
In this embodiment, the axial distance between the threshing element 140 and the outer cylinder 110 and the inner cylinder 160 is generally 120-200mm, and since the threshing separation element 150 has fewer ears without threshing seeds, a distance slightly larger than the distance between the threshing elements is beneficial to reducing the quality of the drum and reducing the power consumption.
In this embodiment, the threshing element 140 is a rasp bar threshing element, which performs threshing by squeezing and kneading corn, the threshing separation element 150 is a round head spike element, further threshing is performed on the corn cob which is not threshed by the threshing element 140, and the threshing corn cob is subjected to a reverse flow-pushing action, so that the corn cob moves towards the rear end trash discharging device.
The impurity removing device comprises 2 outer impurity removing plates 191, 2 inner impurity removing plates 192 and a cover plate 183, wherein the 2 outer impurity removing plates 191 are symmetrically and vertically arranged at the circumference of the other end of the outer cylinder 110, and hollow structures are arranged among the 2 outer impurity removing plates 191, so that the corncob on the inner cylinder after threshing can be conveniently discharged; the 2 inner impurity discharging plates 192 are symmetrically and vertically arranged at the periphery of the other end of the inner cylinder 160, so that the dynamic balance of the roller during working is ensured; the cover plate 183 is detachably disposed at the other end of the outer cylinder 110 by bolts, as shown in fig. 5, the cover plate 183 is provided with a central through hole, and the inner cylinder 160 and the cover plate 183 are disposed at intervals, so that the inner cylinder and the outer cylinder can rotate in opposite directions.
As shown in fig. 6, the driving device comprises a first motor (not shown), a second motor (not shown), a hollow shaft 181 and a solid shaft 182, wherein the hollow shaft 181 is fixed on the external screw feeding head 120, and the hollow shaft 181 is connected with the output end of the first motor; the solid shaft 182 is coaxially and rotatably arranged in the hollow shaft 181, and the solid shaft 182 is fixed on the inner screw feeding head 170, as shown in fig. 7, the solid shaft 182 rotatably penetrates through a central through hole of the cover plate 183 and is connected through a flange, so that the inner and outer rollers can coaxially rotate and simultaneously the installation and the disassembly of the device are convenient, and the solid shaft 182 is connected with a second motor; the first motor and the second motor are forward and reverse, so that the directions of the hollow shaft 181 and the solid shaft 182 are opposite, and the reverse rotation of the inner roller and the outer roller is realized.
The working process of the inner and outer coaxial twin longitudinal axial flow corn threshing double-roller provided by the invention is as follows:
the inner and outer spiral feeding heads grab the ears, the rotating driving force of the spiral blades overcomes the resistance of the fruits to convey the ears to the inner and outer cylinders, the outer spiral feeding head is provided with double-side arc openings, the ears can be uniformly conveyed to the inner spiral feeding head along the arc openings, the arc openings are smaller than the inner spiral feeding head, the ears are prevented from being blocked at the joint of the inner and outer spiral feeding heads, the concave bosses and the through holes of the inner and outer feeding heads are designed to prevent dust from entering the inner and outer spiral feeding heads, the double-spiral design can realize faster conveying of the fed ears, larger feeding amount is realized, the ears can be split, the feeding openings are prevented from being blocked, the ears of corn are gradually fed to the working areas of the inner and outer cylinders, the inner and outer threshing cylinders are designed to operate simultaneously, the ears entering the inner and outer cylinders are enhanced, the threshing speed is increased, the corn threshing speed is reduced, the threshing rate is reduced, the outer cylinder is in a semi-open type imitated structure, the corn kernel falling off from the inner cylinder is separated again, the corn kernel falling from the inner cylinder is favorably, the corn kernel falling from the inner cylinder is reduced, the threshing speed in the opposite directions of the inner cylinder can be placed on the outer cylinder, and the threshing element is placed on the inner cylinder, and the threshing drum is opposite to the inner drum, and the threshing drum is used for threshing drumThe threshing and sorting are matched, the design of the inner and outer double-roller threshing realizes higher feeding quantity and threshing efficiency, the outer cylinder body and the external concave plate and the shell cooperate to form an outer threshing gap for outer threshing, the inner cylinder body and elements on the inner cylinder body and the hollow structure form an inner threshing gap for inner threshing, the inner cylinder body, the outer cylinder body and the circular tube on the outer cylinder body interact with each other to match the threshing with the concave plate and the shell, so that axial flow coaxial coupling of corn double-roller threshing operation is realized, the inner and outer rollers are divided into four sections of feeding, threshing separation and impurity removal along the axis, wherein the threshing section is longer, and the threshing elements are arranged more tightly, thereby improving the beating frequency and threshing efficiency of the ears; threshing elements on the threshing separation section are arranged in an open mode, threshing can be further carried out, good threshing effect is guaranteed, seeds are quickly separated, impurity discharging plates are circumferentially distributed and are divided into inner and outer impurity discharging plates, crops after threshing separation are removed, the discharge of a core shaft after threshing is accelerated, a cover plate is connected with a supporting outer cylinder body through bolts to rotate, meanwhile, the device is convenient to install and detach, a gap is reserved between the cover plate and the inner cylinder body, the inner cylinder body and the outer cylinder body can normally operate without interference, as shown in fig. 8, the inner cylinder body and the outer cylinder body respectively drive the outer cylinder body and the inner cylinder body to reversely operate through a coaxial reversing mechanism, and the inner cylinder body is enabled to anticlockwise operate at a speed of V along the inner cylinder body 1 The outer cylinder rotates clockwise at a speed V 2 The threshing device has the advantages that the threshing device is compact and convenient in structure, space utilization rate is improved, the threshing device can freely adopt combined threshing elements to adapt to various different operation requirements, the threshing device has strong adaptability, and the threshing device has the advantages of being efficient, flexible, adaptive and the like.
The invention designs and develops the inner and outer coaxial twin longitudinal axial flow corn threshing double rollers, and for crops with large feeding quantity, the spiral feeding head can orderly and evenly feed the crops into the inner and outer double rollers for threshing through rotation, so that blockage caused by excessive feeding quantity is avoided; compared with the traditional single longitudinal flow roller threshing, the structure of the inner roller and the outer roller has the advantages that the inner space utilization is optimized, the space utilization rate is improved, the structure is compact, the threshing effect is good, the upgrading scheme is suitable for the existing combine harvester, and the threshing device can be conveniently popularized and applied to actual production.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (6)
1. A twin axial flow corn threshing twin drum which is coaxial inside and outside, characterized in that the twin axial flow corn threshing twin drum comprises:
the outer cylinder body is of a cylindrical structure, and hollow structures are arranged on the outer cylinder body at intervals along the axial direction of the outer cylinder body in the circumferential direction;
the inner cylinder body is of a cylindrical structure and is coaxially arranged in the outer cylinder body at intervals;
the outer spiral feeding head is of a hollow structure and is provided with at least two first spiral blades at intervals in the circumferential direction, the outer spiral feeding head comprises a first big head end and a first small head end, the first big head end is fixed at one end of the outer cylinder body, and the first big head end is provided with double-side arc-shaped openings;
the connecting plate is arranged in the outer spiral feeding head and is parallel to the first big head end;
the through holes are circularly distributed outside the center of the connecting plate;
the concave platforms are circularly distributed on the outer sides of the through holes;
the inner spiral feeding head is circumferentially provided with at least two second spiral blades at intervals, is fixed at one end of the inner cylinder body and is rotatably arranged in the outer spiral feeding head;
the inner spiral feeding head comprises a second big head end and a second small head end, a plurality of bosses are circularly distributed on the second big head end along the center of the second big head end, the bosses and the concave tables can be mutually clamped, and the second small head end is fixed at one end of the inner cylinder body;
the threshing devices are spirally arranged in the circumferential direction of the outer cylinder body and the inner cylinder body, and the threshing devices and the hollow structures are alternately arranged at intervals;
the impurity removing device is arranged at the other end circumferences of the outer cylinder body and the inner cylinder body;
the impurity removing device includes:
the 2 outer impurity discharging plates are symmetrically arranged at the circumference of the other end of the outer cylinder body, and a hollow structure is arranged between the 2 outer impurity discharging plates;
the 2 inner impurity discharging plates are symmetrically arranged at the periphery of the other end of the inner cylinder body;
the cover plate is detachably arranged at the other end of the outer cylinder body;
the driving device is arranged at the outer sides of the inner cylinder body and the outer cylinder body and is used for driving the outer cylinder body and the inner cylinder body to reversely rotate;
the double-sided arc-shaped openings are symmetrically arranged in the circumferential direction of the outer spiral feeding head, the height of the double-sided arc-shaped openings is smaller than that of the inner spiral feeding head, and the inner cylinder body and the cover plate are arranged at intervals.
2. The double cylinder for threshing corn with coaxial twin longitudinal axial flow inside and outside as claimed in claim 1, wherein the hollow structure is a round tube-like concave plate-shaped structure, and the distance between the hollow structures on the same plane is larger than the size of corn seeds.
3. The twin internal and external coaxial longitudinal axial flow corn threshing twin drum of claim 2, wherein said threshing device includes:
a plurality of threshing elements which are arranged at intervals in a spiral manner along the axial direction of the outer cylinder and the inner cylinder and are arranged in the circumferential direction of the outer cylinder and the inner cylinder;
a plurality of threshing separation elements which are arranged at intervals in a spiral manner along the axial direction of the outer cylinder and the inner cylinder in the circumferential direction of the outer cylinder and the inner cylinder;
the threshing elements and the threshing separation elements are distributed in the same spiral line, the threshing elements are arranged at 4/7 positions of an outer cylinder body and an inner cylinder body close to an outer spiral feeding head and an inner spiral feeding head, the threshing separation elements are arranged at 3/7 positions of the outer cylinder body and the inner cylinder body close to the impurity discharging device, and the interval between the threshing separation elements is larger than that between the threshing elements.
4. A twin internal and external coaxial twin longitudinal axial flow corn threshing twin drum as defined in claim 3, wherein said drive means comprises:
a first motor and a second motor;
the hollow shaft is fixed on the outer spiral feeding head and is connected with the output end of the first motor;
the solid shaft is coaxially and rotatably arranged in the hollow shaft and is fixed on the inner spiral feeding head, and the solid shaft is connected with a second motor;
wherein the hollow shaft and the solid shaft are turned in opposite directions, and the solid shaft rotatably penetrates through the cover plate.
5. The twin internal and external coaxial longitudinal axial flow corn threshing twin drum of claim 4, wherein the threshing elements are rasp bar threshing elements and the threshing separation elements are rounded pin elements.
6. The twin axial flow corn threshing twin drum of claim 5, wherein the diameter of the outer cylinder is equal to the diameter of the large head end of the outer screw feed head, and the diameter of the inner cylinder is equal to the diameter of the small head end of the inner screw feed head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311708520.3A CN117397468B (en) | 2023-12-13 | 2023-12-13 | Corn threshing double-roller with inner and outer coaxial twin longitudinal axial flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311708520.3A CN117397468B (en) | 2023-12-13 | 2023-12-13 | Corn threshing double-roller with inner and outer coaxial twin longitudinal axial flow |
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| Publication Number | Publication Date |
|---|---|
| CN117397468A CN117397468A (en) | 2024-01-16 |
| CN117397468B true CN117397468B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311708520.3A Active CN117397468B (en) | 2023-12-13 | 2023-12-13 | Corn threshing double-roller with inner and outer coaxial twin longitudinal axial flow |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10276556A (en) * | 1997-03-31 | 1998-10-20 | Seirei Ind Co Ltd | Threshing device |
| CN201479625U (en) * | 2009-07-17 | 2010-05-26 | 迪尔公司 | Threshing separation barrel, threshing separation device and combine harvester |
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| CN117397468A (en) | 2024-01-16 |
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