CN208029523U - A kind of millet partly feeds sheller unit - Google Patents

Abstract

A semi-feeding threshing device for millet, including a feeding plate, a grain pressing mechanism, a threshing mechanism, a screening mechanism and a hopper, the grain pressing mechanism and the threshing mechanism are arranged side by side, and the threshing mechanism, the screening mechanism and the hopper are arranged sequentially from top to bottom The grain pressing mechanism includes the upper grain pressing chain plate and the lower conveyor belt, the feeding end of the conveyor belt is connected with the feeding plate, and the rotation direction of the conveyor belt and the grain pressing chain plate is opposite to realize the transportation of millet. A plurality of L-shaped grain-pressing plates are arranged at intervals on the main body of the chain plate. One plate surface of the grain-pressing plate is vertically installed on the main body of the chain plate, and the other plate protrudes toward the opposite direction of the movement of the grain-pressing chain plate. The board, the conveyer belt below and the main body of the chain board form a grain pressing space, and the millet stalks are clamped by the adjacent grain pressing boards while pressing the millet stalks. The device has simple mechanism, small size, light weight, clean threshing, less broken or husking, and higher separation and cleaning rate.

Description

A millet half-feed threshing device

technical field

The utility model belongs to the field of agricultural machinery, in particular to a millet semi-feeding threshing device.

Background technique

Rice is the largest grain crop in my country. Less than 30% of the rice planting area has produced about 40% of the world's total grain. In recent years, the rice planting area has been steadily increasing, and the heavy rice harvesting and threshing work Harvesters and threshers play an important role in it. At present, my country's millet harvest mainly adopts two methods. One is that most areas are still manually harvested, and threshers are used for on-field threshing; the other is that a small number of areas are harvested by windrowers, and then the ears are picked and threshed after drying or directly threshed by threshers. In recent years, there are also enterprises or farmers who use grain combine harvesters such as wheat or rice, and carry out millet harvesting after slight modification and adjustment. However, most of these machines adopt the form of full feeding. The stalks, branches and leaves and grain ears cut off by the cutter enter the threshing drum for threshing, which makes it difficult to separate the stalks, branches and leaves and grains during the threshing process, and the grain codes are not easy to remove. The loss is serious and other problems, and the cutting and rolling of the stalk by the machine will also cause excessive waste of energy.

Utility model content

In view of the above problems, the purpose of this utility model is to propose a millet half-feed threshing device, which eliminates the defect of high energy consumption of the full-feed type, and at the same time makes the whole mechanism obviously simple, with reduced volume and quality, clean threshing, and broken Or with less shelling, the separation and cleaning rate is higher.

In order to realize above-mentioned technical purpose, the technical scheme that the utility model adopts is:

A semi-feeding threshing device for millet, comprising a feeding plate arranged on a frame, a grain pressing mechanism, a threshing mechanism, a screening mechanism and a discharge hopper, the grain pressing mechanism and the threshing mechanism are arranged side by side, and the grain pressing mechanism and the feeding mechanism are arranged side by side. Material plate connection, threshing mechanism, screening mechanism and discharge hopper are arranged in sequence from top to bottom; the described grain pressing mechanism includes the upper grain pressing chain plate and the lower conveyor belt, the feeding end of the conveyor belt is connected with the feeding plate, and the conveyor belt The direction of rotation of the grain pressing chain plate is opposite to that of grain conveying. The main body of the grain pressing chain plate is provided with a plurality of L-shaped grain pressing plates at intervals, and one plate surface of the grain pressing plate is vertically installed on the chain plate. On the main body of the plate, the other plate protrudes in the opposite direction of the movement of the grain pressing chain plate. The adjacent grain pressing plate, the conveyor belt below and the main body of the chain plate form a grain pressing space. The adjacent grain pressing board clamps the millet stalk, and the power device at the bottom of the frame drives the screening mechanism and the grain pressing mechanism through the transmission mechanism.

The width of the feeding plate is greater than that of the grain pressing mechanism, and one end of the feeding plate in the width direction has a baffle.

The threshing mechanism includes a threshing cylinder and a concave grid. The threshing cylinder is located on the concave side of the concave grid, and there is a gap between the threshing cylinder and the concave grid. Entering the gap, threshing is carried out under the rolling action of the threshing cylinder.

The threshing drum is divided into a bow tooth section and a nail tooth section along the moving direction of the millet. The bow teeth are evenly distributed on the bow tooth section, and the nail teeth are uniformly distributed on the nail tooth section, and the tips of the nail teeth are curved. The direction of rotation is opposite, and the threshing drum is driven by the power mechanism arranged at the lower part of the frame.

The screening mechanism includes a first-level vibrating screen and a second-level vibrating screen arranged up and down and a fan between the two vibrating screens. The two ends of the first-level vibrating screen and the two ends of the second-level vibrating screen are respectively connected to crankshafts. Connect to the rack.

The power device is an engine, and the transmission mechanism includes a driving pulley installed on the output shaft of the engine, a driven pulley, an intermediate shaft, a gear pair, and a drive belt installed on the crankshaft at the end of the first-stage shaker screen and the second-stage shaker screen respectively. One end of the intermediate shaft is installed on the frame, and the other end is connected with the rotating shaft of the conveyor belt. The driven pulley is installed on the intermediate shaft, and the gear pair is installed on the frame. The rotating shaft is connected, and the other gear is installed on the gear rotating shaft with a pulley on the frame. The driven pulley is connected to the driving pulley through the first belt, connected to the pulley of the gear rotating shaft through the second belt, and connected to the pulley of the gear rotating shaft through the third belt. The belt is connected to the driving pulley on the first-stage shaker screen, and the drive pulley of the first-stage shaker screen and the drive pulley of the second-stage shaker screen are connected through the fourth belt.

The discharge hopper includes an inclined plate and an elbow, one end of the elbow is connected to the lower end of the inclined plate, and the other end of the elbow extends out of the machine frame.

Compared with the prior art, the beneficial effects of the utility model are:

First, the device adopts the principle of impact and combing, and only hits and combs the ear head of the millet, while the tail of the crop stem is clamped, and then uses a vibrating screen and a fan to achieve the grains, grain yards, branches and leaves. , chaff and other purposes of separation. At the same time, it ensures relatively complete crop stalks and satisfies the continuous improvement of the majority of users' demand for stalks.

Second, the grain pressing mechanism in the device has both the millet conveying function and the stalk clamping function, which can effectively reduce the setting of the device mechanism. The grain pressing chain plate in the grain pressing mechanism is provided with L-shaped grain pressing plates at intervals, and the grain pressing plates One side of the chain plate is perpendicular to the main body of the chain plate, and the other side is horizontal when the chain plate moves to the upper or lower layer of the grain pressing chain plate, so that it can cooperate with the conveyor belt to compress the stalks, and at the same time, because the adjacent grain pressing plate can form a A space independent of each other, in this space, adjacent grain pressing boards can also clamp the stalks to avoid the twisting of the stalks, thereby facilitating the work of the threshing mechanism, and reducing the twisting of the stalks to cause the stalks to be crushed by the threshing mechanism The probability of crushing, and during the process of the pressing plate from the upper layer to the lower layer, when the pressing plate passes the front end of the pressing chain plate, that is, the end adjacent to the feeding plate, the pressing plate can also move the feed The millet on the board enters the grain pressing mechanism.

Third, the first half of the threshing cylinder of this device adopts bow teeth, the tooth shape is larger and smoother, and the tooth pitch is larger, which is used for coarse threshing; Threshing. The combined use of bow teeth and nail teeth makes threshing cleaner and reduces the breakage rate of grain. The tooth tips of the nail teeth are small, so the ends of the nail teeth of the device are bent in the direction opposite to the rotation of the threshing drum, so as to avoid damage to the grain by the tooth tips.

Fourth, the discharge hopper of the device is connected with an elbow at the lowest end of the sloping plate, so that the grains falling into the sloping plate can be guided to flow out from the side of the frame, so as to be collected in time.

Description of drawings

Fig. 1 is the structural representation of this device;

Fig. 2 is a schematic structural view of the threshing mechanism, in which arrows indicate the moving direction of millet in the threshing mechanism;

Fig. 3 is the structural representation of grain pressing mechanism, and the arrow represents the running direction of conveyer belt among the figure;

Fig. 4 is the schematic structural view of a first-stage shaker screen and a second-stage shaker screen;

Fig. 5 is the structural representation of discharging hopper;

Marks in the figure: 1. frame, 2. feeding plate, 3. grain pressing mechanism, 301, grain pressing chain plate, 302, conveyor belt, 303, grain pressing board, 304, grain pressing space, 4. threshing mechanism, 401 , threshing drum, 401-1, bow teeth, 401-2, nail teeth, 402, concave plate grille, 5, screening mechanism, 501, fan, 502, first-level shaking screen, 503, second-level shaking screen, 504, Crankshaft, 505, the fourth belt, 506, driving pulley, 6, discharge hopper, 601, inclined plate, 602, elbow, 7, power mechanism, 8, power unit, 901, driving pulley, 902, intermediate shaft, 903, gear pair.

Detailed ways

The technical solution of the present utility model will be further described through specific implementation modes below in conjunction with the accompanying drawings.

As shown in the figure, a millet semi-feeding threshing device includes a feed plate 2 arranged on a frame 1, a grain pressing mechanism 3, a threshing mechanism 4, a screening mechanism 5 and a hopper 6, and the grain pressing mechanism 3 It is arranged side by side with the threshing mechanism 4, and the grain pressing mechanism 3 is connected with the feeding plate 2, and the threshing mechanism 4, the screening mechanism 5 and the discharge hopper 6 are arranged sequentially from top to bottom;

The described grain pressing mechanism 3 comprises the grain pressing chain plate 301 above and the conveyor belt 302 below, the feeding end of the conveyor belt 302 is connected with the feed plate 2, and the rotation direction of the conveyor belt 302 and the grain pressing chain plate 301 are opposite, so as to realize For the transportation of millet, a plurality of L-shaped grain pressing plates 303 are arranged at intervals on the chain plate main body of the grain pressing chain plate 301, one plate surface of the grain pressing plate 303 is vertically installed on the main body of the chain plate, and the other plate faces the grain pressing The chain plate 301 protrudes in the opposite direction of the movement, and the two plate surfaces of the grain pressing plate 303 are designed with rounded corners. The adjacent grain pressing plate 303, the conveyor belt 302 below and the main body of the chain plate surround a mutually independent grain pressing plate. In the space 304, the millet stalk is clamped by the adjacent grain pressing plate 303 while the grain pressing plate 303 is pressing the millet stalk, and the power device 8 at the bottom of the frame 1 drives the screening mechanism 5 and the grain pressing mechanism through a transmission mechanism 3 actions; the feed plate 2 is set horizontally, flush with and connected to the upper layer of the conveyor belt 302, and the width of the feed plate 2 is greater than the width of the grain pressing mechanism 3, preferably, the width of the feed plate 2 is greater than The length of the millet, that is, after the millet is placed on the feed plate 2, both ends of the millet are on the feed plate 2, and one end of the feed plate 2 where the ears of millet are located is bent upwards to form a baffle;

The threshing mechanism 4 includes a threshing cylinder 401 and a concave plate grid 402, the axis of the threshing cylinder 401 is parallel to the moving direction of the millet in the grain pressing mechanism 3, the concave surface of the concave plate grid 402 is arranged towards the grain pressing mechanism 3, and the concave plate The two ends of grid 402 are fixed on the frame 1, and described threshing cylinder 401 is positioned at the concave side of concave plate grid 402, and there is gap between threshing cylinder 401 and concave plate grid 402, and the ear of millet from One end of the concave plate grid 402 enters the gap, and threshing is carried out under the rolling action of the threshing cylinder 401, which is driven by the power mechanism 7 arranged at the bottom of the frame 1; The tooth section and the nail tooth section, the bow teeth 401-1 are evenly distributed on the bow tooth section, the nail teeth 401-2 are evenly distributed on the nail tooth section, and the tip of the nail tooth 401-2 is bent, and the bending direction is opposite to the rotation direction of the threshing cylinder 401 to avoid damage to the grain by the tip of the tooth; the tooth shape of the bow tooth 401-1 is large and smooth, and the tooth pitch is large, which is for coarse threshing; the tooth shape of the nail tooth 401-2 is thin and the tooth pitch is small, which is For fine threshing, the combination of bow tooth 401-1 and nail tooth 401-2 makes threshing cleaner and reduces the breakage rate of grain;

The screening mechanism 5 includes a first-level shaker screen 502 and a second-level shaker screen 503 arranged up and down and a blower fan 501 between the two shaker screens, the two ends of the first-level shaker screen 502, the two ends of the second-level shaker screen 503 A crankshaft 504 is respectively connected, and the crankshaft 504 is connected with the frame 1;

The described grain pressing mechanism 3 and the screening mechanism 5 are driven by the same set of power unit 8 and transmission mechanism, and the power unit 8 can select an engine or an electric motor, and the transmission mechanism includes a driving pulley 901, a driven pulley, an intermediate shaft 902, a gear The pair 903 and the driving pulley 506 respectively installed on the crankshaft 504 at the end of the primary shaker 502 and the second stage shaker 503, the driving pulley 901 is installed on the output shaft of the engine, and one end of the intermediate shaft 902 is installed on the frame 1 , the other end is connected with the rotating shaft of the conveyor belt 302, the driven pulley is installed on the intermediate shaft 902, and the gear pair 903 is installed on the frame 1, and one gear in the gear pair 903 is connected with the rotating shaft of the pressing grain chain plate 301, and the other A gear is installed on the gear shaft with the pulley provided on the frame 1, the driven pulley is connected to the driving pulley 901 by the first belt, the pulley of the gear shaft is connected by the second belt, and connected by the third belt. The driving pulley 506 on the first-level shaking screen 502 is connected by the fourth belt 505 between the driving pulley 506 of the first-level shaking screen 502 and the driving pulley 506 of the second-level shaking screen 503;

The discharge hopper 6 includes a slant plate 601 and an elbow 602, one end of the elbow 602 is connected to the lower end of the slant plate 601, the other end of the elbow 602 stretches out from the frame 1, and the cross section of the end of the elbow 602 is oblong Shaped, the slant plate 601 is obliquely fixed on the frame 1 through a bracket.

When in use, the millet is placed on the feeding plate 2, and one end of the ear of rice is facing the baffle plate of the feeding plate 2, and the grain pressing chain plate 301 and the conveyor belt 302 are manually pushed to the grain pressing mechanism 3 during operation. Or by the grain pressing plate 303 on the grain pressing chain plate 301, the grain at the front end is inserted between the grain pressing chain plate 301 and the conveyer belt 302, while the stalk of the millet is pressed on the conveyer belt 302 by the grain pressing plate 303, it is also The adjacent grain pressing plate 303 is clamped, and when the millet enters the grain pressing mechanism 3, the ear part enters the gap between the threshing cylinder 401 and the concave plate grid 402, and under the high-speed rotation of the threshing cylinder 401, the threshing cylinder 401 The bow teeth 401-1 and nail teeth 401-2 on the threshing drum 401 are like "combs", passing between the ears of grain, exerting a certain pulling force on the grain, so that the grain is separated from the cob, and at the same time, the bow teeth 401-2 on the threshing cylinder 401 1 and spike 401-2 rotate at high speed to generate inertial force to hit the ear head, causing the grain to generate vibration and inertial force to destroy the connection between the ear and the ear shaft, thereby realizing threshing. The first half of the threshing cylinder 401 adopts bow teeth 401-1, the tooth shape is larger and smoother, and the tooth pitch is larger, which is used for coarse threshing; Perform fine threshing. The cooperative use of the bow tooth 401-1 and the nail tooth 401-2 makes the threshing cleaner and reduces the damage rate of the grain.

The grains and debris that have been removed from the threshing drum 401 fall into the first-stage shaking screen 502 installed below it through the gap on the concave plate grille 402, and the shaking screen is driven to vibrate under the action of the belt drive to remove larger branches and leaves. , stems and other miscellaneous. The grains taken off by the first-level shaker sieve 502 fall into the second-level shaker sieve 503 installed below it, and the shaker sieve is driven to vibrate under the action of the belt drive to remove smaller impurities. The blower blower 501 work that is installed in frame 1 side will blow out the sundry that is clamped in the grain. With the cooperation of the primary and secondary vibrating screens 502, 503 and the fan 501, the grains obtained by threshing are cleaner and contain less impurities. Finally grain can fall into and flow out in the discharge hopper 6 that is installed in frame 1 bottom. The threshed stalks are axially transported along the threshing drum 401 to the rear of the threshing device and flow out under the joint action of the conveyor belt 302 and the pressing grain chain plate 301 .

Claims (7)

1. A semi-feeding threshing device for millet, including a feeding plate (2), a grain pressing mechanism (3), a threshing mechanism (4), a screening mechanism (5) and a hopper (6) arranged on the frame (1) ), the described grain pressing mechanism (3) and the threshing mechanism (4) are arranged side by side, and the grain pressing mechanism (3) is connected with the feeding plate (2), the threshing mechanism (4), the screening mechanism (5) and the discharge hopper (6) Arranged sequentially from top to bottom; the feature is that the grain pressing mechanism (3) includes the upper grain pressing chain plate (301) and the lower conveyor belt (302), the feeding end of the conveyor belt (302) and The feeding plates (2) are connected, and the rotation directions of the conveyor belt (302) and the grain-pressing chain plate (301) are opposite to realize the transportation of millet. The chain plates of the grain-pressing chain plate (301) are arranged at intervals A plurality of L-shaped grain pressing plates (303), one plate surface of the grain pressing plate (303) is vertically installed on the main body of the chain plate, and the other plate faces the opposite direction of the movement of the grain pressing chain plate (301). The grain pressing board (303), the conveyer belt (302) below and the main body of the chain plate enclose a grain pressing space (304), and the millet stalks are clamped by the adjacent grain pressing board (303) while pressing the grain stalks , the power device (8) at the bottom of the frame (1) drives the screening mechanism (5) and the grain pressing mechanism (3) through the transmission mechanism. 2. A semi-feeding threshing device for millet according to claim 1, characterized in that: the width of the feeding plate (2) is greater than the width of the grain pressing mechanism (3), and the feeding plate (2) One end in the width direction has a baffle. 3. The semi-feeding threshing device for millet according to claim 1, characterized in that: the threshing mechanism (4) includes a threshing cylinder (401) and a concave grid (402), and the threshing cylinder (401) is located The concave side of the concave grid (402), and there is a gap between the threshing cylinder (401) and the concave grid (402), and the ears of millet enter the gap from one end of the concave grid (402), Threshing is carried out under the rolling action of the threshing cylinder (401). 4. A semi-feeding threshing device for millet according to claim 3, characterized in that: the threshing cylinder (401) is divided into a bow tooth section and a nail tooth section along the moving direction of the millet, and the bow tooth section is The bow teeth (401-1) are arranged, the nail teeth (401-2) are evenly distributed on the nail tooth segment, and the tip of the nail teeth (401-2) is bent, and the bending direction is opposite to the rotation direction of the threshing cylinder (401), and the threshing cylinder (401) 401) is driven by the power mechanism (7) arranged at the bottom of the frame (1). 5. A semi-feeding threshing device for millet according to claim 1, characterized in that: the screening mechanism (5) includes a first-level vibrating screen (502) and a second-level vibrating screen (503) arranged up and down and The fan (501) located between the two vibrating screens, the two ends of the primary vibrating screen (502) and the two ends of the secondary vibrating screen (503) are respectively connected to the crankshaft (504), the crankshaft (504) and the frame ( 1) connect. 6. A semi-feeding threshing device for millet according to claim 5, characterized in that: the power device (8) is an engine, and the transmission mechanism includes a driving pulley (901) installed on the output shaft of the engine, a driven Belt pulley, intermediate shaft (902), gear pair (903) and driving pulley (506) respectively installed on the crankshaft (504) at the end of the primary shaker screen (502) and the second stage shaker screen (503), the intermediate shaft One end of (902) is installed on the frame (1), the other end is connected to the rotating shaft of the conveyor belt (302), the driven pulley is installed on the intermediate shaft (902), and the gear pair (903) is installed on the frame (1) On the top, one gear in the gear pair (903) is connected to the rotating shaft of the pressing grain chain plate (301), and the other gear is installed on the rotating shaft of the gear with a pulley on the frame (1), and the driven pulley The driving pulley (901) is connected through the first belt, the pulley of the gear shaft is connected through the second belt, and the driving pulley (506) on the first-stage vibrating screen (502) is connected through the third belt. The first-stage vibrating screen (502) ) and the driving pulley (506) of the secondary vibrating screen (503) are connected through a fourth belt (505). 7. A semi-feeding threshing device for millet according to claim 1, characterized in that: the discharge hopper (6) includes a sloping plate (601) and an elbow (602), one end of the elbow (602) and The lower end of the inclined plate (601) is connected, and the other end of the elbow (602) stretches out from the frame (1).