A cyperus oleifera harvester

Abstract

The invention discloses a cyperus chinensis harvester, which comprises a walking chassis, and a mesh belt conveyor, a chute, a double-layer screen cage and a conveyor are arranged on the walking chassis behind a rotary tillage harrow, and the double-layer screen cage comprises a rotating shaft, an inner screen cage, an outer screen cage and a front screen cage. Advantages: 1. The cyperus chinensis plant is pushed by a pushing plate, and a pulley is arranged to support the first transmission belt of the mesh belt conveyor, so as to enhance the bearing capacity of the whole machine, reduce the running resistance of the whole machine and reduce the cost; 2. A front screen cage is added at the feeding end of the double-layer screen cage, the internal space of the front screen cage is large, and most of the impurities can be screened out through the front screen cage, which can effectively enhance the screening effect and achieve good screening effect; 3. The rotating shaft and the supporting wheel cooperate to bear the weight of the screen cage, which can effectively reduce the rotation resistance and reduce the energy consumption; 4. Brushes and fixed brushes are arranged above and below the mesh, respectively, and inner and outer roller brushes are also arranged, so as to achieve good comprehensive dredging effect.

Description

Technical field:

[0001] The invention relates to agricultural machinery, in particular to a cyperus oleifera harvester. Background technology:

[0002] Cyperus oleiferus is a high-quality and high-yield oil crop introduced from Africa. It can be planted on beaches, hillsides, hills, and forests in all parts of my country. It is drought-resistant and water-resistant, and saves labor and fertilizer. Cyperus oleiferus mainly harvests underground nuclear rhizomes. The double-cage Cyperus oleiferus harvester disclosed in Patent No. CN201010575281.5 includes a rotary tillage harrow, a conveyor belt, and a screen cage. The cyperus oleiferus plants dug up by the rotary tillage harrow are directly sent to the screen cage for screening via the conveyor belt. Among them, the screen-type conveyor belt generally includes two transmission rollers, and the two sides of the two transmission rollers are driven by a chain. A mesh is fixed between the two chains, which is generally a fixed mesh. The screen cage is a double-layer screen cage. This harvester has the following problems: 1. The weight of the screened material on the screen-type conveyor belt is large, and the running resistance of the whole machine is large. 1. High energy consumption; the fruit carries a large amount of soil and is heavy, which makes it easy for landslides to occur on the screen, resulting in low conveying capacity of the screen conveyor belt and poor screening effect; 2. The space between the inner and outer screen cages is small, so the feeding speed cannot be too fast. If the material is added too quickly, the inner and outer screen cages will be full of soil and cyperus juncea, so that the soil has no time to be screened by the outer screen cage and is discharged together with the cyperus juncea, resulting in poor screening effect; 3. The weight of the screen cage is all borne by the rotating shaft, and the motor directly drives the rotating shaft to rotate, and drives the screen cage to rotate through the rotating shaft. The motor has large resistance to operation, high energy consumption, and the rotating shaft is easy to deform, affecting the service life of the equipment; 4. The soil carried by the fruit is relatively humid, and the mesh of the screen conveyor belt and the screen cage is easily blocked, affecting the screening effect. Summary of the invention:

[0003] The object of the present invention is to provide a cyperus oleifera harvester which is easy to use.

[0004] The present invention is implemented by the following technical scheme: a cyperus oleifera harvester, comprising a walking chassis, a front and rear fixed depth wheel and a rotary tillage harrow are arranged at the bottom of the front end of the walking chassis, a mesh belt conveyor, a chute, a double-layer screen cage and a conveyor are arranged on the walking chassis behind the rotary tillage harrow, a shovel plate arranged upwardly and tiltedly arranged between the feed end of the mesh belt conveyor arranged upwardly and the lower rear end of the rotary tillage harrow, the discharge end of the mesh belt conveyor is placed at the feed end of the chute, the discharge end of the chute is placed in the front screen cage of the double-layer screen cage, the feed hopper of the conveyor is placed below the material discharge port of the double-layer screen cage; at the top of the front end of the walking chassis A material storage box is provided, and the discharging end of the conveyor is placed above the material storage box; a frame is fixed on the walking chassis, and the double-layer screen cage includes an inclined rotating shaft, an inner screen cage, an outer screen cage and a front screen cage, the rotating shaft is rotatably arranged on the frame, and the inner screen cage and the outer screen cage arranged inside and outside are provided on the outer fixed sleeve of the rotating shaft; the front screen cage is provided on the outer sleeve of the rotating shaft at the front end of the outer screen cage, the rear end of the front screen cage is fixedly docked with the front end of the outer screen cage, and a trumpet-shaped connecting tube is connected between the inner wall of the front screen cage and the front end of the inner screen cage; a driving mechanism transmission-connected with the front screen cage or the outer screen cage is fixed on the frame.

[0005] Furthermore, an annular baffle is fixedly connected between the rear end of the outer screen cage and the rear end of the inner screen cage, and a material discharge port is opened in a circumferential direction on the side wall adjacent to the baffle at the rear end of the outer screen cage; scrapers fixed along the axial direction of the rotating shaft are fixed on the inner and outer sides of the material discharge port, and the scraper outside the material discharge port is movably placed in the feed hopper of the conveyor.

[0006] Furthermore, a plurality of rows of rake nails arranged along the axial direction are fixed on the inner wall of the outer screen cage.

[0007] Furthermore, the driving mechanism includes a motor or a gearbox, and the output shaft of the motor or the gearbox passes through a transmission mechanism; the transmission mechanism includes a second driven gear ring fixed to the outside of the front screen cage or the outer screen cage, and a second driving gear fixed on the output shaft, and the second driving gear is meshed with the second driven gear ring for transmission.

[0008] Furthermore, a plurality of pairs of supporting wheels are fixed on the frame below the front screen cage and the outer screen cage, and the axes of the supporting wheels are arranged parallel to the axis of the rotating shaft.

[0009] Furthermore, guide vanes are fixed on the inner wall of the front screen cage.

[0010] Furthermore, an outer roller brush is fixed outside the outer sieve cage and the front sieve cage, both ends of the roller brush shaft of the outer roller brush are rotatably connected to the frame respectively, and the bristles of the outer roller brush are in sliding contact with the outer sieve cage and the front sieve cage.

[0011] Furthermore, an inner roller brush is rotatably provided inside the inner screen cage, and both ends of a roller brush shaft of the inner roller brush are rotatably connected to the frame respectively, and bristles of the inner roller brush are in sliding contact with the inner screen cage.

[0012] Furthermore, a first driving gear ring is fixed to the front end of the front screen cage, the rear end of the inner screen cage or the rear end of the outer screen cage, and a first driven gear meshing with the first driving gear ring is fixed to the roller brush shaft.

[0013] Furthermore, the mesh belt conveyor includes a boosting mechanism, a clamping mechanism and a screen-type conveying mechanism which are arranged on the frame in parallel from top to bottom, the top of the shovel plate is flush with the top of the clamping mechanism, the pushing plate of the boosting mechanism is movably arranged above the screen-type conveying mechanism, and the top of the screen of the screen-type conveying mechanism is in sliding contact with the clamping mechanism; a number of rollers which are in rolling contact with the first transmission belt of the screen-type conveying mechanism are rotatably provided on the frame on both sides of the screen-type conveying mechanism; the transmission roller of the screen-type conveying mechanism and the transmission shaft of the boosting mechanism are transmitted through gear meshing.

[0014] Furthermore, a guard eave is fixed on the frame between the upper and lower belts of the first conveyor belt, and the guard eave is placed above the roller of the lower layer.

[0015] Furthermore, a plurality of fixed brushes arranged perpendicularly to the transmission direction of the screen-type conveying mechanism are fixed on the frame below the screen-type conveying mechanism, and the bristles of the fixed brushes are in sliding contact with the lower screen of the screen-type conveying mechanism.

[0016] Furthermore, the clamping mechanism includes pressure strips that are fixedly connected in a criss-cross pattern.

[0017] Furthermore, the screen-type conveying mechanism includes two transmission rollers rotatably arranged on the frame, the first conveyor belts are respectively sleeved between the two ends of the two transmission rollers, and a screen is fixed between the two first conveyor belts; the screen includes a plurality of fixed shafts evenly fixed between the two first conveyor belts, and a movably arranged mesh is provided between each two adjacent fixed shafts, the front end of the mesh is hinged to the corresponding previous fixed shaft, and the rear end of the mesh is movably overlapped on the corresponding subsequent fixed shaft.

[0018] Furthermore, the boosting mechanism includes two transmission shafts, and second transmission belts are respectively sleeved between the two ends of the two transmission shafts, and a number of boosting components are fixed between the two second transmission belts; the boosting component includes a fixed rod, and the two ends of the fixed rod are fixedly connected to the corresponding second transmission belts, and the pushing plate is fixed at the front end of the fixed rod; a brush is fixed at the rear end of the fixed rod, and the brush is in sliding contact with the mesh, and pulleys are rotatably provided at the bottom ends of the fixed rods on both sides of the pushing plate.

[0019] Furthermore, a first fan is fixed on the walking chassis, and an air outlet of the first fan is oriented between the material discharge port of the double-layer screen cage and the feed hopper of the conveyor.

[0020] Furthermore, a second fan is fixed on the walking chassis at the front end of the double-layer screen cage, and an air outlet of the second fan is directed toward the interior of the double-layer screen cage and toward the discharge end of the double-layer screen cage.

[0021] The advantages of the present invention are as follows: 1. The pushing plate is used to push the cyperus juncea plant, so that the cyperus juncea plant and the mesh sheet move relative to each other, thereby enhancing the separation effect, improving the clean recovery rate of cyperus juncea, and increasing the profit; and a pulley is provided to support the first transmission belt of the mesh belt conveyor, thereby enhancing the bearing capacity of the whole machine, reducing the running resistance of the whole machine, and reducing the cost; 2. A front screen cage is added at the feeding end of the double-layer screen cage, and the raw materials enter the front screen cage. The internal space of the front screen cage is large, and most of the impurities can be screened out through the front screen cage, which can effectively enhance the screening effect and achieve good screening effect; 3. The rotating shaft and the supporting wheel cooperate to bear the weight of the screen cage, thereby preventing the screen cage from being overweight. The problem of deformation of the rotating shaft caused by the concentration of all the water is eliminated, which prolongs the service life of the equipment. The gear transmission is used to directly drive the screen cage to rotate instead of driving the rotating shaft to rotate, which can effectively reduce the rotation resistance and reduce energy consumption. 4. Brushes and fixed brushes are respectively arranged above and below the mesh, and inner and outer roller brushes are also arranged, which have a good comprehensive dredging effect, prevent blockage, and ensure the screening effect. 5. The whole machine is small in size, easy to manufacture, and low in cost. The unique mesh belt conveyor cooperates with the double-layer sorting screen cage, the first fan, the second fan, etc. to realize multiple screening of cyperus juncea, which can effectively improve the recovery rate of cyperus juncea and improve economic benefits. Description of the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0023] Figure 2 It is a structural diagram of a mesh belt conveyor.

[0024] Figure 3 for Figure 2 A partial enlarged view of .

[0025] Figure 4 A schematic diagram of the booster assembly.

[0026] Figure 5 for Figure 4 AA section view.

[0027] Figure 6 It is a partial schematic diagram of the movable screen-type conveying mechanism.

[0028] Figure 7 It is a schematic diagram of the structure of a multi-layer sorting screen cage.

[0029] Figure 8 for Figure 7 BB cross-sectional view.

[0030] Walking chassis 1, fixed depth wheel 2, rotary tiller 3, mesh belt conveyor 4, booster mechanism 4.2, clamping mechanism 4.3, screen conveyor mechanism 4.4, push plate 4.5, first conveyor belt 4.6, roller 4.7, transmission roller 4.8, transmission shaft 4.9, fixed brush 4.10, fixed shaft 4.11, mesh 4.12, second conveyor belt 4.13, booster assembly 4.14, fixed rod 4.15, brush 4.16, pulley 4.17, eaves 4.18, hinged ring 4.19, elbow 4.20, chute 5, double-layer screen cage 6, front screen cage 6.1 , rotating shaft 6.2, inner screen cage 6.3, outer screen cage 6.4, connecting tube 6.5, gearbox 6.6, baffle 6.7, material discharge port 6.8, rake nail 6.9, second driven gear ring 6.10, output shaft 6.11, second driving gear 6.12, support wheel 6.13, guide blade 6.14, outer roller brush 6.15, roller brush shaft 6.16, inner roller brush 6.17, first driving gear ring 6.18, first driven gear 6.19, scraper 6.20, conveyor 7, shovel board 8, storage box 9, first fan 10, second fan 11, frame 12. Specific implementation method:

[0031] like Figures 1 to 8 As shown, a cyperus rotundus harvester comprises a traveling chassis 1, a fixed depth wheel 2 and a rotary tillage harrow 3 are arranged at the front and rear bottom of the traveling chassis 1, a mesh belt conveyor 4, a chute 5, a double-layer screen cage 6 and a conveyor 7 are arranged on the traveling chassis 1 behind the rotary tillage harrow 3, a shovel board 8 arranged upwardly and tiltedly arranged between the feeding end of the mesh belt conveyor 4 arranged upwardly and the lower part of the rear end of the rotary tillage harrow 3, and the rotary tillage harrow 3 digs up the cyperus rotundus plants and cyperus rotundus and sends them to the top of the mesh belt conveyor 4 through the shovel board 8;

[0032] A frame 12 is fixed on the walking chassis 1.

[0033] The mesh belt conveyor 4 comprises a frame 12 and a booster mechanism 4.2, a pressing mechanism 4.3 and a screen-type conveying mechanism 4.4 which are arranged parallel to each other from top to bottom on the frame 12.

[0034] The boost mechanism 4.2 includes two transmission shafts 4.9, between the two ends of the two transmission shafts 4.9 are respectively sleeved with second transmission belts 4.13, and between the two second transmission belts 4.13 are fixed a plurality of boost assemblies 4.14, the boost assemblies 4.14 include fixed rods 4.15, both ends of the fixed rods 4.15 are fixedly connected with the corresponding second transmission belts 4.13, a push plate 4.5 is fixed at the front end of the fixed rods 4.15, and the push plate 4.5 of the boost mechanism 4.2 is movably arranged above the screen-type conveying mechanism 4.4; a brush 4.16 is fixed at the rear end of the fixed rods 4.15, and the brush 4.16 is in sliding contact with the mesh 4.12, The booster assembly 4.14 moves toward the discharge end of the sieve conveying mechanism 4.4 driven by the second conveyor belt 4.13. During the movement, the plants on the sieve are pushed by the push plate 4.5, thereby enhancing the screening effect and ensuring the transportation capacity of the sieve conveying mechanism 4.4. At the same time, the sieve can be dredged by the brush 4.16 to prevent the soil from clogging the mesh and ensure the screening effect. The bottom ends of the fixed rods 4.15 on both sides of the push plate 4.5 are rotatably provided with pulleys 4.17, which roll along the first conveyor belt 4.6 or the sieve to play a supporting role, preventing the push plate 4.5 from directly contacting the sieve to send hard friction, thereby ensuring the normal operation of the equipment.

[0035] The sieve-type conveying mechanism 4.4 comprises two transmission rollers 4.8 rotatably arranged on a frame 12, a first conveyor belt 4.6 is respectively sleeved between the two ends of the two transmission rollers 4.8, and a sieve is fixed between the two first conveyor belts 4.6; the sieve comprises a plurality of fixed shafts 4.11 evenly fixed between the two first conveyor belts 4.6, a movably arranged mesh 4.12 is arranged between each two adjacent fixed shafts 4.11, the front end of the mesh 4.12 is hinged to the corresponding previous fixed shaft 4.11, and the rear end of the mesh 4.12 is movably overlapped on the corresponding next fixed shaft 4.11; the transmission roller 4.8 drives the first conveyor belt 4.6 to rotate, and the mesh 4.12 between the upper first conveyor belts 4.6 is moved. The rear end of the mesh 4.2 is just overlapped on the rear fixed shaft 4.11, and the meshes 4.12 of the upper layer are connected end to end in sequence through the fixed shaft 4.11 to form a screen to screen the root crops; a plurality of hinged rings 4.19 are fixed to the front end of the mesh 4.12, and the hinged rings 4.19 are sleeved on the corresponding front fixed shaft 4.11; a downwardly bent elbow 4.20 is fixed to the rear end of the mesh 4.12, and the curvature of the elbow 4.20 is the same as that of the fixed shaft 4.11, and the elbow 4.20 is overlapped on the corresponding rear fixed shaft 4.11; the elbow 4.20 is just buckled on the corresponding fixed shaft 4.11, reducing the risk of the movable end of the mesh 4.12 turning outward, extending the service life, and ensuring the screening effect;

[0036] A plurality of rollers 4.7 rolling in contact with the first conveyor belt 4.6 of the sieve-type conveyor mechanism 4.4 are rotatably arranged on the frames 12 on both sides of the sieve-type conveyor mechanism 4.4; the rollers 4.7 can support the first conveyor belt 4.6, decompose the pressure of the screened material on the first conveyor belt 4.6, and ensure the normal operation of the first conveyor belt 4.6, thereby reducing the failure rate; a retaining eave 4.18 is fixed on the frame 12 between the upper and lower belts of the first conveyor belt 4.6, and the retaining eave 4.18 is placed above the lower roller 4.7, and the retaining eave 4.18 can prevent the cyperus oleifera and soil blocks from entering the bearing of the support wheel 6.13, thereby ensuring the normal operation of the support wheel 6.13;

[0037] A plurality of fixed brushes 4.10 are fixed on the frame 12 below the sieve conveying mechanism 4.4 and are arranged perpendicularly to the conveying direction of the sieve conveying mechanism 4.4. The bristles of the fixed brushes 4.10 are in sliding contact with the lower sieve of the sieve conveying mechanism 4.4. When the mesh sheets 4.12 of the lower layer pass through the fixed brushes 4.10, the mesh sheets 4.12 are in sliding contact with the bristles of the fixed brushes 4.10 under the drive of the first conveyor belt 4.6, so as to further dredge the mesh.

[0038] The top of the shovel plate 8 is flush with the top of the clamping mechanism 4.3, and the clamping mechanism 4.3 includes crisscross fixedly connected pressure strips, through the clamping mechanism 4.3; the top of the screen of the screen conveying mechanism 4.4 is in sliding contact with the clamping mechanism 4.3; the mesh 4.12 can be pressed against the fixed shaft 4.11 by the crisscrossed pressure strips to ensure the flatness of the upper screen, and at the same time, the movable part of the rear end of the mesh 4.12 is separated from the push plate 4.5 of the booster mechanism 4.2 to prevent the push plate 4.5 from turning the rear end of the mesh 4.12 outward to bend the mesh 4.12, further ensuring the flatness of the mesh 4.12 and ensuring the normal operation of the equipment;

[0039] The transmission roller 4.8 of the sieve-type conveying mechanism 4.4 and the transmission shaft 4.9 of the boosting mechanism 4.2 are driven by gear meshing. A differential case is fixed at the front end of the frame 12. The input shaft of the differential case is connected to the power shaft of the tractor. The output shaft of the differential case is connected to any one of the transmission rollers 4.8 or the transmission shaft 4.9 through a gearbox. The transmission roller 4.8 and the transmission shaft 4.9 are driven by gear meshing, so that the first conveyor belt 4.6 and the second conveyor belt 4.13 can rotate in the opposite direction, and then the boosting component 4.14 pushes the plants on the top of the sieve of the conveying section to the discharge end, so that the fruits fall through the mesh 4.12; at the same time, the plants are pushed by the pushing plate 4.5, so that relative friction occurs between the plants and the sieve, thereby enhancing the separation effect;

[0040] The discharging end of the mesh belt conveyor 4 is placed at the feeding end of the chute 5, and the discharging end of the chute 5 is placed in the front screen cage 6.1 of the double-layer screen cage 6, and the material output from the discharging end of the mesh belt conveyor 4 is sent into the front screen cage 6.1 through the chute 5;

[0041] The double-layer screen cage 6 comprises an inclined rotating shaft 6.2, an inner screen cage 6.3, an outer screen cage 6.4 and a front screen cage 6.1. The rotating shaft 6.2 is rotatably provided on the frame 12, and the inner screen cage 6.3 and the outer screen cage 6.4 are provided with an inner and outer fixed sleeve on the outer side of the rotating shaft 6.2; a plurality of pairs of supporting wheels 6.13 are fixed on the frame 12 below the front screen cage 6.1 and the outer screen cage 6.4, and the axis of the supporting wheel 6.13 is arranged parallel to the axis of the rotating shaft 6.2; the supporting wheel 6.13 is a groove wheel, and a track matching the groove wheel is arranged on the outer wall of the outer screen cage 6.4, and the groove wheel rolls along the track, and the supporting wheel 6.13 and the rotating shaft 6.2 together support the inner and outer screen cages and the front screen cage;

[0042] A front screen cage 6.1 is sleeved on the outside of the rotating shaft 6.2 at the front end of the outer screen cage 6.4, and the rear end of the front screen cage 6.1 is fixedly docked with the front end of the outer screen cage 6.4. A trumpet-shaped connecting tube 6.5 is connected between the inner wall of the front screen cage 6.1 and the front end of the inner screen cage 6.3. The connecting tube 6.5 is configured in a trumpet shape to facilitate the transition of the material in the front screen cage 6.1 to the inner screen cage 6.3. A driving mechanism connected to the front screen cage 6.1 or the outer screen cage 6.4 is fixed on the frame 12, and the driving mechanism includes a motor or a gearbox 6.6, and the motor or the gearbox 6.6 The output shaft 6.11 is connected to the front screen cage 6.1 or the outer screen cage 6.4 through a transmission mechanism; the transmission mechanism includes a second driven gear ring 6.10 fixed to the outside of the front screen cage 6.1 or the outer screen cage 6.4, and a second driving gear 6.12 fixed to the output shaft 6.11, and the second driving gear 6.12 is meshed with the second driven gear ring 6.10 for transmission; in this embodiment, a gearbox 6.6 is independently arranged on the frame 12, and the second driven gear ring 6.10 is arranged on the outside of the front screen cage 6.1; the raw material is fed into the interior of the front screen cage 6.1, and the gearbox 6.6 drives the front screen cage 6.1 and the inner and outer screen cages to rotate as a whole to screen the raw materials through the second driving gear 6.12 and the second driven gear ring 6.10. Most of the smaller impurities mixed in the raw materials are screened out by the front screen cage 6.1, and the large impurities and materials enter the inner screen cage 6.3 through the connecting tube 6.5 and are discharged from the rear end of the inner screen cage 6.3. The large impurities are trapped in the inner screen cage 6.3, and the materials and smaller impurities enter the outer screen cage 6.4. The remaining smaller materials are further screened out by the outer screen cage 6.4; at the rear end of the outer screen cage 6.4 and the inner screen cage 6.6, the outer screen cage 6.4 is connected to the inner screen cage 6.6. .3, a circular baffle 6.7 is fixedly connected between the rear ends of the outer sieve cage 6.4 and the baffle 6.7, a material discharge port 6.8 is opened in the circumferential direction on the side wall adjacent to the baffle 6.7 at the rear end of the outer sieve cage 6.4, and the material trapped in the outer sieve cage 6.4 is finally discharged through the material discharge port 6.8; a scraper 6.20 fixed along the rotating shaft 6.2 is fixed on the inner and outer sides of the material discharge port 6.8, and the scraper 6.20 on the outer side of the material discharge port 6.8 is movably placed in the feed hopper of the conveyor 7, and the corresponding material below can be smoothed by the scraper 6.20 to prevent the material from piling up and affecting the screening of the sieve cage;

[0043] A guide blade 6.14 is fixed on the inner wall of the front screen cage 6.1, which may be a plurality of guide plates arranged obliquely relative to the axis of the front screen cage 6.1, or a spiral blade as shown in this embodiment. The guide blade 6.14 rotates together with the front screen cage 6.1 to further guide the material in the front screen cage 6.1 into the inner screen cage 6.3;

[0044] A plurality of rows of rake nails 6.9 arranged axially are fixed to the inner wall of the outer screen cage 6.4. The rake nails 6.9 can stir and dredge the materials between the inner and outer screen cages. At the same time, when harvesting root and tuber fruits, the soil blocks will hit the rake nails 6.9 and break when falling under the action of their own weight, thereby enhancing the screening effect.

[0045] An outer roller brush 6.15 is fixed to the outside of the outer sieve cage 6.4 and the front sieve cage 6.1, and the two ends of the roller brush shaft 6.16 of the outer roller brush 6.15 are respectively connected to the frame 12 for rotation, and the bristles of the outer roller brush 6.15 are in sliding contact with the outer sieve cage 6.4 and the front sieve cage 6.1; an inner roller brush 6.17 is rotatably arranged inside the inner sieve cage 6.3, and the two ends of the roller brush shaft 6.16 of the inner roller brush 6.17 are respectively connected to the frame 12 for rotation, and the bristles of the inner roller brush 6.17 are in sliding contact with the inner sieve cage 6.3; during the rotation of the front sieve cage 6.1 and the inner and outer sieve cages, the outer roller brush 6.15 or the inner roller brush corresponding to the outer roller brush 6.15 or the inner roller brush 6.17 sliding contact, the bristles of the inner and outer roller brushes can dredge the meshes of the front screen cage 6.1 and the inner and outer screen cages to prevent blockage; a first active gear ring 6.18 is fixed to the front end of the front screen cage 6.1, the rear end of the inner screen cage 6.3 or the rear end of the outer screen cage 6.4, and a first driven gear 6.19 meshing with the first active gear ring 6.18 is fixed to the roller brush shaft 6.16; the front screen cage 6.1 drives the inner roller brush 6.17 and the roller brush shaft 6.16 to rotate through the first active gear ring 6.18 and the first driven gear 6.19, further enhancing the dredging effect of the bristles on the screen cage;

[0046] A second fan 11 is fixed on the walking chassis 1 at the front end of the double-layer screen cage 6. The air outlet of the second fan 11 is directed toward the inside of the double-layer screen cage 6 and toward the discharge end of the double-layer screen cage 6. During the process of the screen cage driving the material to rotate and screen, the second fan 11 can blow the impurities inside the screen cage to the discharge end to enhance the separation effect.

[0047] The feed hopper of the conveyor 7 is placed below the material discharge port 6.8 of the double-layer screen cage 6, a storage box 9 is arranged at the top of the front end of the walking chassis 1, and the discharge end of the conveyor 7 is placed above the storage box 9; the cyperus rotten beans discharged from the material discharge port 6.8 enter the conveyor 7, and are sent to the storage box 9 for collection through the conveyor 7; a first fan 10 is fixed on the walking chassis 1, and the air outlet of the first fan 10 faces between the material discharge port 6.8 of the double-layer screen cage 6 and the feed hopper of the conveyor 7, and the first fan 10 can further separate the impurities in the cyperus rotten beans discharged from the material discharge port 6.8, thereby reducing the impurity content of the cyperus rotten beans;

[0048] Working principle: First, install a distribution box on the walking chassis 1, connect the input shaft of the distribution box to the power shaft of the tractor, and connect the output shaft of the distribution box to the rotary harrow 3, the transmission roller 4.8 and the gearbox 6.6 through a chain and a transmission shaft. The power of the tractor is transmitted to the distribution box, which drives the rotary harrow 3, the mesh belt conveyor 4 and the double-layer screen cage 6 to operate;

[0049] During the movement of the tractor-driven walking chassis 1, the rotary tillage harrow 3 digs up the sedge beans and sedge bean plants with their roots and sends them to the top of the screen-type conveying mechanism 4.4 of the mesh belt conveyor 4 through the shovel plate 8; the mesh 4.12 is driven by the first conveyor belt 4.6 to lift the sedge bean plants and sedge beans to the discharge end. During the lifting process, the soil blocks leak through the mesh on the mesh 4.12, and the sedge bean plants are transported to the discharge end along the upper mesh 4.12 by the push plate 4.5 of the booster mechanism 4.2. When transported to the discharge end, the mesh 4.12 flips downward to unload all the sedge bean plants and sedge beans above it into the inside of the chute 5, and falls into the inside of the front screen cage 6.1 through the chute 5;

[0050] In the process of the guide blade 6.14 rotating to push the material inside the front screen cage 6.1 to the discharge port, most of the impurities fall through the front screen cage 6.1; the cyperus rotundus plants and cyperus rotundus beans enter the inner screen cage 6.3 through the connecting tube 6.5, and finally, the cyperus rotundus plants are discharged through the discharge end of the inner screen cage 6.3; the cyperus rotundus beans and the remaining impurities enter the outer screen cage 6.4, and the remaining impurities are further screened out through the outer screen cage 6.4, and the cyperus rotundus beans enter the feed hopper of the conveyor 7 through the material discharge port 6.8, and are sent to the storage box 9 through the conveyor 7 for collection;

[0051] In the above process, the first fan 10 and the second fan 11 work simultaneously. The first fan 10 can further separate the impurities in the oil beans discharged from the material outlet 6.8; the second fan 11 can directly blow out the fine impurities in the inner screen cage 6.3 from its discharge end.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cyperus oleifera harvester, comprising a walking chassis, wherein the front bottom of the walking chassis is provided with a fixed depth wheel and a rotary tillage harrow arranged in front and rear, characterized in that: A mesh belt conveyor, a chute, a double-layer screen cage and a conveyor are arranged on the walking chassis behind the rotary tillage harrow. A shovel plate arranged upwardly and tiltedly arranged is arranged between the upwardly inclined feeding end of the mesh belt conveyor and the lower rear end of the rotary tillage harrow. The discharging end of the mesh belt conveyor is placed at the feeding end of the chute, and the discharging end of the chute is placed in the front screen cage of the double-layer screen cage. The feeding hopper of the conveyor is placed below the material discharging port of the double-layer screen cage. A storage box is arranged at the front top of the walking chassis, and the discharging end of the conveyor is placed above the storage box. A frame is fixed on the walking chassis, and the double-layer screen cage includes an inclined rotating shaft, an inner screen cage, an outer screen cage and a front screen cage. The rotating shaft is rotatably arranged on the frame, and the inner screen cage and the outer screen cage arranged inside and outside are fixedly sleeved on the outside of the rotating shaft; the front screen cage is sleeved on the outside of the rotating shaft at the front end of the outer screen cage, the rear end of the front screen cage is fixedly docked with the front end of the outer screen cage, and a trumpet-shaped connecting tube is connected between the inner wall of the front screen cage and the front end of the inner screen cage; a driving mechanism connected with the front screen cage or the outer screen cage is fixed on the frame; An annular baffle is fixedly connected between the rear end of the outer screen cage and the rear end of the inner screen cage, and a material discharge port is opened along the circumferential direction on the side wall adjacent to the baffle at the rear end of the outer screen cage; scrapers fixed along the axial direction of the rotating shaft are fixed on the inner and outer sides of the material discharge port, and the scraper outside the material discharge port is movably placed in the feed hopper of the conveyor; A plurality of rows of rake nails arranged along the axial direction are fixed on the inner wall of the outer screen cage; The driving mechanism includes a motor or a gearbox, and the output shaft of the motor or the gearbox passes through a transmission mechanism; the transmission mechanism includes a second driven gear ring fixed to the front screen cage or the outside of the outer screen cage, and a second driving gear fixed to the output shaft, and the second driving gear is meshed with the second driven gear ring for transmission; A plurality of pairs of support wheels are fixed on the frame below the front screen cage and the outer screen cage, and the axes of the support wheels are arranged parallel to the axis of the rotating shaft; A guide vane is fixed on the inner wall of the front screen cage; An outer roller brush is fixed outside the outer sieve cage and the front sieve cage, and both ends of the roller brush shaft of the outer roller brush are rotatably connected to the frame respectively, and the bristles of the outer roller brush are in sliding contact with the outer sieve cage and the front sieve cage; An inner roller brush is rotatably arranged inside the inner screen cage, two ends of a roller brush shaft of the inner roller brush are respectively rotatably connected to the frame, and bristles of the inner roller brush are in sliding contact with the inner screen cage.

2. The cyperus oleifera harvester according to claim 1, characterized in that: A first driving gear ring is fixed at the front end of the front screen cage, the rear end of the inner screen cage or the rear end of the outer screen cage, and a first driven gear meshing with the first driving gear ring is fixed on the roller brush shaft.

3. The cyperus oleifera harvester according to claim 1, characterized in that: The mesh belt conveyor includes a boosting mechanism, a clamping mechanism and a screen-type conveying mechanism which are arranged on the frame in parallel from top to bottom. The top of the scraper plate is flush with the top of the clamping mechanism. The pushing plate of the boosting mechanism is movably arranged above the screen-type conveying mechanism. The top of the screen of the screen-type conveying mechanism is in sliding contact with the clamping mechanism. A number of rollers which are in rolling contact with the first transmission belt of the screen-type conveying mechanism are rotatably provided on the frame on both sides of the screen-type conveying mechanism. The transmission roller of the screen-type conveying mechanism and the transmission shaft of the boosting mechanism are transmitted through gear meshing.

4. The cyperus oleifera harvester according to claim 3, characterized in that: A guard eave is fixed on the frame between the upper and lower belts of the first conveyor belt, and the guard eave is placed above the rollers of the lower layer.

5. The cyperus oleifera harvester according to claim 3, characterized in that: A plurality of fixed brushes arranged perpendicularly to the transmission direction of the screen-type conveying mechanism are fixed on the frame below the screen-type conveying mechanism, and the bristles of the fixed brushes are in sliding contact with the lower screen of the screen-type conveying mechanism.

6. The cyperus oleifera harvester according to claim 3, characterized in that: The clamping mechanism comprises clamping strips which are fixedly connected in a crisscross pattern.

7. The cyperus oleifera harvester according to claim 3, characterized in that: The screen-type conveying mechanism includes two transmission rollers rotatably arranged on the frame, the first transmission belts are respectively sleeved between the two ends of the two transmission rollers, and a screen is fixed between the two first transmission belts; the screen includes a plurality of fixed shafts evenly fixed between the two first transmission belts, a movably arranged mesh is provided between each two adjacent fixed shafts, the front end of the mesh is hinged to the corresponding previous fixed shaft, and the rear end of the mesh is movably overlapped on the corresponding next fixed shaft.

8. The cyperus oleifera harvester according to claim 7, characterized in that: The boosting mechanism includes two transmission shafts, and second transmission belts are respectively sleeved between the two ends of the two transmission shafts, and a plurality of boosting components are fixed between the two second transmission belts; the boosting component includes a fixed rod, and the two ends of the fixed rod are fixedly connected to the corresponding second transmission belts, and the pushing plate is fixed to the front end of the fixed rod; a brush is fixed to the rear end of the fixed rod, and the brush is in sliding contact with the mesh, and pulleys are rotatably provided at the bottom ends of the fixed rods on both sides of the pushing plate.

9. The cyperus oleifera harvester according to claim 1, characterized in that: A first fan is fixed on the walking chassis, and an air outlet of the first fan faces between the material discharge port of the double-layer screen cage and the feed hopper of the conveyor.

10. The cyperus oleifera harvester according to claim 1, characterized in that: A second fan is fixed on the walking chassis at the front end of the double-layer screen cage, and an air outlet of the second fan is directed toward the interior of the double-layer screen cage and toward the discharge end of the double-layer screen cage.

Images