Rolling brush type portable seed and catkin separating device and method and application in poplar seeds

Abstract

A rolling brush type portable seed and flocculus separating device comprises a seed and flocculus separating bin, a collecting bin, a centrifugal fan and a collecting bag. An air inlet of the seed-flocculate separation bin is connected with a suction nozzle; a seed outlet of the seed-flocculate separation bin is connected with a seed inlet of the collection bin; an air outlet of the seed-flocculate separation bin is connected with an air suction port of the centrifugal fan through an air pipe; an air blowing port of the centrifugal fan is connected with an air inlet of a three-way valve; two air outlets of the three-way valve are respectively connected with an air inlet of a collecting bag through a flocculus discharging pipeline and connected with a circulating port of a seed and flocculus separating bin through a circulating pipeline; the seed and flocculus separation bin comprises a separation bin shell and two parallel brush rollers mounted in a cavity of the separation bin shell; an air inlet and an air outlet of the seed-flocculate separation bin are respectively formed in the middle positions of the front side and the rear side of the separation bin shell; the axes of the air inlet and the air outlet are vertical to the axis of the roller; a rectangular seed outlet is formed in the bottom surface of the separation bin shell; the collecting bin is detachably connected to the lower part of the seed and flocculus separating bin; and the brush roll is formed by connecting comb teeth outside a roller.

Description

Technical Field

[0001] The technical solution belongs to the technical field of forestry equipment, specifically to a portable device and a seed-flocculation separation method applicable to poplar seeds. Background Art

[0002] Poplar seeds are small seeds that are 2.7 mm long, 1.1 mm wide, and about 0.4 mm thick. Common varieties include Populus euphratica, Populus nigra, etc. As for poplar fluff, it is hairy and fuzzy, and is differentiated from the outer cells of the seed coat. Each fluff has a seed, weighing about 0.1 mg. For the collection of poplar seeds, the fruits collected from the poplar are dried and exploded to obtain a mixture of poplar fluff wrapped in poplar seeds. The poplar fluff and seeds must be completely separated to obtain the poplar seeds.

[0003] At present, the seed-flocculation separation of poplar seeds is mostly done manually.

[0004] Due to the close combination of poplar seeds and fluff, and the small size of seeds, it is difficult to separate the seeds from the fluff, and the efficiency is low. At the same time, because the fluff is light and easily blown by the wind, it is difficult to collect the separated fluff, and it also has a certain irritating effect on the operator's mouth and nose. In addition, the fluff is extremely flammable. If it is not handled properly, it will not only pollute the environment, but also bring fire hazards. Summary of the invention

[0005] In order to solve the problem of separating the seed fluff of tiny seeds with fluff such as poplar seeds, this technical solution proposes a roller brush type portable seed fluff separation device, which uses the roller brush to imitate the movement of human hands, is equipped with an air circulation device and a nylon seed fluff collection bag, which improves the efficiency of seed fluff separation, solves the problem of fluff flying around after seed fluff separation, and protects the environment. Specifically:

[0006] A roller-brush type portable seed-flocculation separation device, comprising a seed-flocculation separation chamber, a collection chamber, a centrifugal fan and a collection bag;

[0007] The air inlet of the seed-flocculation separation bin is connected to the suction nozzle; the seed outlet of the seed-flocculation separation bin is connected to the seed inlet of the collection bin; the air outlet of the seed-flocculation separation bin is connected to the air intake of the centrifugal fan through the air duct; the air outlet of the centrifugal fan is connected to the air inlet of the controllable three-way valve, and the two air outlets of the three-way valve are respectively connected to the air inlet of the collection bag through the fluff discharge pipe and the circulation port of the seed-flocculation separation bin through the circulation pipe; the air inlet of the seed-flocculation separation bin sucks in the seed-flocculation separation bin, and the seed-flocculation is separated into seeds and fluff by the seed-flocculation separation bin, and the seeds enter the collection bin, and the fluff passes through the air outlet of the centrifugal fan and the air inlet of the three-way valve in turn with the wind, and then enters the collection bag or returns to the seed-flocculation separation bin through the circulation port controlled by the three-way valve;

[0008] The seed-flocculation separation bin comprises a separation bin shell and two parallel brush rollers installed in the cavity of the separation bin shell; the air inlet and air outlet of the seed-flocculation separation bin are respectively opened in the middle of the front and rear sides of the separation bin shell, and the axes of the air inlet and air outlet are perpendicular to the axis of the roller; a rectangular seed outlet is opened on the bottom surface of the separation bin shell;

[0009] The top of the collecting bin is provided with a seed inlet corresponding to the seed outlet; the collecting bin is detachably connected to the bottom of the seed-flocculation separation bin;

[0010] The two brush rollers are driven by a driving device to rotate in opposite directions; the brush roller is composed of comb teeth connected to the outside of a roller; the comb teeth have multiple rows along the axial direction of the roller, and each row of comb teeth has multiple comb teeth with uniform intervals; the comb teeth in each row are evenly distributed around the axis of the roller; the axis of each comb tooth vertically passes through the axis of the roller.

[0011] The front end of the nozzle is duckbill shaped.

[0012] The outer contours of the two brush rollers after installation correspond to the shape of the inner contour of the cavity of the separation bin shell, and the spacing between the outer contour and the inner contour ranges from 3 to 8 mm.

[0013] A diamond-shaped hole brush plate is detachably connected below the seed inlet of the collection bin, and a seed collection frame is detachably connected below the diamond-shaped hole brush plate, and sieve holes are distributed on the bottom surface of the seed collection frame; the bottom of the seed collection frame is the bottom of the collection bin;

[0014] For diamond hole brush plate: the diagonal length of the diamond hole ranges from (4 to 6 mm) × (2 to 4 mm), the interval between adjacent diamond holes in front and back ranges from 4 to 6 mm, and the interval between adjacent diamond holes in left and right ranges from 2 to 4 mm;

[0015] For the seed collecting frame: a handle is connected to the outside of the seed collecting frame, the diameter of the sieve holes is 1 to 1.5 mm, and the interval between adjacent sieve holes is 1 to 2 mm.

[0016] The driving device is a DC motor; the output shaft of the DC motor is connected to a synchronous belt transmission device (such as a belt transmission mechanism); one end of the brush roller is connected to the synchronous belt transmission device through a transmission shaft, and the other end of the brush roller is connected to a quick-release end cover; a through hole for connecting the transmission shaft of the brush roller is opened on one side of the cavity of the separation bin shell, and a quick-release hole matching the quick-release end cover is opened on the other side of the cavity of the separation bin shell; two DC motors are located outside the cavity of the separation bin shell, and the DC motors and the synchronous belt transmission device are both on the same side of the brush roller, and the separation bin shell is detachably connected to the separation bin shell to seal the DC motor, the synchronous belt transmission device and the transmission shaft of the brush roller;

[0017] The detachable connection structure between the collecting bin and the seed-flocculation separation bin is as follows: a pair of slide grooves are installed on the bottom surface of the seed-flocculation separation bin shell as collecting bin positioning slide grooves, and the seed outlet is between the pair of slide grooves; a pair of convex ridges are installed on the top surface of the collecting bin, and the seed inlet is between the pair of convex ridges; when the collecting bin is connected to the flocculation separation bin, the convex ridges are in the corresponding slide grooves.

[0018] For the brush roll: each comb tooth is composed of a cluster of bristles with a diameter of 0.2 mm, and the bristles are made of elastic material (such as elastic rubber or plastic); the height of the comb teeth ranges from 10 to 15 mm; the minimum distance between the top of the comb teeth on one roller and the surface of the other roller ranges from 15 to 25 mm; the speed range of the brush roll is 500 to 800 rpm;

[0019] For the seed-flocculation separation chamber: there is a row of shell comb teeth on the inner edges of the two opposite sides of the seed outlet, and the two rows of shell comb teeth are facing each other; the height range of the shell comb teeth is 6 to 10 mm;

[0020] For the collection bin: there are two sets of parallel comb teeth in the seed inlet as the collection bin comb teeth; each set of comb teeth has two rows in pairs, and each row of comb teeth has multiple teeth with uniform spacing; the height range of the collection bin comb teeth is 8 to 12 mm;

[0021] The comb teeth of the brush roller, the comb teeth of the seed-flocculation separation chamber and the comb teeth of the collection chamber are arranged in parallel.

[0022] When the collecting bin is connected to the floc separation bin, the projections of the two brush rollers are respectively between two rows of comb teeth of the same group of the collecting bin; and each comb tooth of the collecting bin is obliquely upward toward the corresponding brush roller.

[0023] Reference Fig.17 Since the comb teeth of the brush roller 309 are made of elastic material, when brushing the comb teeth 30111 of the shell and the comb teeth 132 of the collection bin, there will be a staggered rolling brushing effect, and there will also be a staggered rolling brushing effect between the two brush rollers 309.

[0024] The battery pack of the centrifugal fan is connected to the lower part of the outside of the collecting bag and forms an integrated structure with the collecting bag; a shoulder strap is connected to the collecting bag, and the switchable opening of the collecting bag is at the top of the collecting bag; a fluff inlet for connecting to a fluff discharge duct is opened on the lower side of the collecting bag; the fluff discharge duct is a hose; the air duct is a hard pipe; the centrifugal fan is directly connected to the three-way valve; a fan handle is connected to the centrifugal fan body, and the switch button of the centrifugal fan is installed on the fan handle.

[0025] The seed-flocculation separation device is suitable for the seed-flocculation separation of poplar seeds, and then: the distance between the outer contour of the two brush rollers after installation and the inner contour of the cavity of the separation bin shell is 5mm; the diagonal length of the diamond holes is 4mm×2mm, the interval between the adjacent diamond holes in the front and rear is 6mm, and the interval between the adjacent diamond holes in the left and right is 4mm; the diameter of the sieve holes at the bottom of the seed collecting frame is 1mm, and the interval between adjacent sieve holes is 2mm; the height of the comb teeth of the brush roller is 12mm; the distance between the top of the comb teeth on one roller and the surface of the other roller is 18mm; the rotation speed of the brush roller is 600 rpm; the height of the comb teeth of the shell is 8mm, and the height of the comb teeth of the collecting bin is 10mm.

[0026] The seed-flocculation separation method using the roller-brush type portable seed-flocculation separation device comprises the following steps: a device preparation stage and an operation stage; the operation stage comprises the following steps:

[0027] S1) Action 1:

[0028] Turn on the fan switch button, the centrifugal fan starts to work, and an appropriate amount of seed-flocculation combination is sucked into the cavity of the seed-flocculation separation bin from the suction nozzle, and the suction nozzle is lifted;

[0029] S2) Action 2:

[0030] The two DC motors drive the brush rollers to rotate, and the seed-flocculation combination passes through the roller brushes between the two brush rollers, as well as the roller brushes between the brush rollers and the comb teeth of the housing and the comb teeth of the collection bin, so that some seeds are separated;

[0031] S3) Action 3:

[0032] Due to the effect of gravity and the obstruction of the diamond-shaped hole brush plate in the collection bin, the separated seeds and small impurities smaller than seeds fall into the collection bin below; the seed-flocculation combination that is not completely separated and large impurities larger than seeds remain in the seed-flocculation separation bin;

[0033] The seeds fall into the seed collection frame, and small impurities pass through the sieve holes at the bottom of the seed collection frame and fall into the impurity collection bin below;

[0034] S4) Action 4:

[0035] The seed-flocculation combination and large impurities that are not completely separated are sucked into the centrifugal fan; at this time, the three-way valve is placed in the state where the circulation pipeline is open and the flocculus discharge pipeline is closed, and the seed-flocculation combination and large impurities are discharged from the blowing port of the centrifugal fan, and enter the seed-flocculation separation chamber again through the circulation pipeline and the seed-flocculation circulation port;

[0036] S5) Action 5:

[0037] After repeating actions 2 to 4, the seeds in the seed collection frame have not increased significantly; at this time, the three-way valve is placed in a state where the circulation pipeline is closed and the fluff discharge pipeline is opened; the separated fluff enters the collection bag from the fluff discharge pipeline interface through the blowing port of the centrifugal fan;

[0038] S6) End state:

[0039] After a batch of seed-flocculation separation is completed, the seed-flocculation separation device is turned off; the collection bag is opened, and the collected poplar fluff is transferred to the collection bag; the seed collection frame is pulled out, and the seeds are put into the collection bottle; the collection bin is removed, and the impurities in the impurity collection bin are cleaned.

[0040] During the preparation stage, the operator carries the collection bag on his back, holds the fan handle with one hand and the lifting handle of the hard air duct with the other hand, and aims the suction nozzle of the device at the seed-flocculation combination; sets the three-way valve to the state in which the circulation pipe is open and the flocculant discharge pipe is closed, and turns on the main power switch at the battery pack.

[0041] The principles and beneficial effects of the present invention are explained.

[0042] 1) The front suction nozzle of the device adopts a duckbill-shaped structure to form a narrow tube effect, which can effectively enhance the suction force at the suction port and better suck in the seed-flocculation combination.

[0043] 2) The seed-flocculation separation bin of the device adopts a double-brush roller design and is designed with comb teeth at the bottom. When rolling and brushing, it cooperates with the arc-shaped comb teeth (collection bin comb teeth) on the top of the collection bin. The rolling and brushing action between them can effectively separate the seed-flocculation.

[0044] Take poplar seed fluff as an example:

[0045] The center distance between the two brush rollers is 30mm; the height of the comb teeth of the brush roller is 12mm; the distance between the top of the comb teeth on one roller and the surface of the other roller is 18mm; that is, the staggered length of the comb teeth on the two brush rollers is 6mm; the comb teeth are evenly distributed in 10 groups at 360°, and the interval between adjacent teeth of each group of comb teeth in the axial direction is 5mm.

[0046] Since poplar seed fluff is easily entangled, this structural design can ensure the efficiency of the roller brush while minimizing the phenomenon of the brush roller being stuck due to the entanglement of seed fluff.

[0047] The double brush rollers rotate in opposite directions, which can increase the contact frequency between the two brush rollers and improve the separation effect.

[0048] Because it is a handheld device and takes the requirement of lightweight into consideration, and if there are multiple brush rollers, after the poplar fluff enters at the front end, most of the poplar fluff will be directly sucked away by the fan after being brushed by the first two brush rollers, and very little poplar fluff will be brushed by the subsequent brush rollers, so a structure with multiple brush rollers is not adopted.

[0049] 3) This device uses a centrifugal fan to achieve a circulating roller brush for the seed-flocculation combination, solving the problem that a single roller brush cannot separate completely and increasing the number of brush rollers will sacrifice portability, making the seed-flocculation separation more complete. A three-way valve is used to control the switching between the circulation port and the discharge port when the seed-flocculation leaves the fan, thereby improving convenience.

[0050] 4) The collection bin of the device adopts a three-layer structure, which can effectively separate the separated fruits, seeds, seed coats and other dust, making it easy to clean and collect the three. In addition, the diamond-shaped hole brush plate and the seed collection frame are installed in a pull-out manner, which is convenient for disassembly and assembly when cleaning the collection bin and collecting seeds.

[0051] 5) The duckbill suction nozzle and centrifugal fan connecting pipe of the device are both locked when assembled, which is convenient for disassembly and storage of the device.

[0052] 6) The brush roller of the device is installed by means of a quick-release end cover. During continuous operation, multiple pairs of brush rollers can be prepared and the brush rollers covered with poplar fluff can be quickly replaced, thereby improving the convenience of continuous operation.

[0053] 7) The seed fluff collection bag of the device adopts a backpack structure, and a handle is designed on the centrifugal fan and the fan connecting pipe respectively, which is more in line with the design of ergonomics and makes it more convenient and labor-saving for the operator to use.

[0054] 8) The device is designed to place the battery pack under the seed fluff collection bag and carry it on the operator's back, which improves convenience; the large-capacity battery pack can provide a longer battery life and is free from the constraints of wired work, which improves convenience when working outdoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0056] Figure 2 This is a structural diagram of a floc separation bin.

[0057] Figure 3 This is a structural diagram of a floc separation bin ( Figure 2 the opposite side of the viewing angle),

[0058] Figure 4 This is a structural diagram of a floc separation bin ( Figure 2 Remove the separation compartment cover from the viewing angle);

[0059] Figure 5 This is a schematic diagram of the structure of the floc separation chamber shell (with Figure 3 Same viewing angle),

[0060] Figure 6 This is a schematic diagram of the structure of the floc separation chamber shell (with Figure 5 the opposite side of the viewing angle),

[0061] Figure 7 This is a schematic diagram of the structure of the floc separation chamber shell (from an upward perspective).

[0062] Figure 8 This is a structural diagram of the floc separation chamber shell ( Figure 6 Left side of the viewing angle);

[0063] Fig. 9 This is a structural diagram of the brush roller in the floc separation chamber.

[0064] Fig.10 This is a schematic diagram of the assembly structure of the brush roller in the floc separation chamber (exploded diagram);

[0065] Fig.11 This is a schematic diagram of the collection bin structure.

[0066] Fig.12 This is a schematic diagram of the collection bin structure ( Fig.12 the opposite side of the viewing angle),

[0067] Fig.13 This is a schematic diagram of the assembly structure of the collection bin (exploded diagram, with Fig.12 same side of the viewing angle);

[0068] Fig.14 This is a schematic diagram of the structure of the poplar fluff collection bag.

[0069] Fig.15 This is a schematic diagram of the structure of the poplar fluff collection package ( Fig.14 the opposite side of the viewing angle);

[0070] Fig.16 It is a schematic diagram of the connection assembly structure of the locking button;

[0071] Fig.17 This is a schematic diagram of the interior of the floc separation chamber;

[0072] Figure 1 to Figure 17 Middle: duckbill-shaped suction nozzle 1, locking button 2, seed-flocculation separation chamber 3, centrifugal fan connecting pipe 4, centrifugal fan 5, fan switch button 6, fan handle 7, (poplar fluff) collection bag 8, battery pack 9, fluff discharge pipe 10, three-way valve 11, circulation pipe 12, collection chamber 13, lifting handle 14;

[0073] Separation bin shell 301, separation bin cover 302, M2.5 self-tapping screws 303, quick-release end cover 304, DC motor 305, small synchronous pulley 306, synchronous belt 307, large synchronous pulley 308, brush roller 309, brush roller drive shaft 310, nozzle connection port 30101, motor cavity 30102, locking button slot 30103, fan connection port 30104, seeding and flocculation circulation port 30105, quick-release hole 30106, brush roller drive shaft hole 30107, bin cover mounting hole 30108, cable channel 30109, collection bin positioning slide slot 30110, housing comb teeth 30111, cable hole 30112;

[0074] Diamond hole brush plate 131, collection bin comb teeth 132, impurity collection bin 133, seed collection frame 134;

[0075] Poplar fluff collection bag cover 801, poplar fluff collection bag body 802, poplar fluff collection bag shoulder strap 803, and fluff discharge pipe interface 804;

[0076] Main power switch 901, battery 902.

[0077] FIG18( a ) is a streamline diagram of the centrifugal fan when it is working;

[0078] Figure 18(b) is a diagram showing the trajectory of seeds being sucked in from the air intake of the fan;

[0079] Figure 18(c) is a diagram showing the trajectory of seeds being discharged from the air outlet of the fan;

[0080] Figure 18(d) is a diagram showing the overall movement trajectory of the seeds in the centrifugal fan. DETAILED DESCRIPTION

[0081] The present invention is further described with reference to the accompanying drawings and specific implementation modes.

[0082] Overview.

[0083] refer to Figure 1 The roller brush type portable seed and fluff separation device of the present invention comprises: a duckbill-shaped suction nozzle 1, a seed and fluff separation chamber 3, a collection chamber 13, a seed collection frame 134, a centrifugal fan 5, a fan handle 7, a three-way valve 11, a (poplar fluff) collection bag 8, a battery pack 9 and a plurality of connecting pipes, etc.

[0084] Further references Figure 2 to Figure 8 as well as Fig.17 The seed-flocculation separation bin has a front interface connected to a duckbill-shaped suction nozzle through a connection button, and a rear interface connected to a pipe of a centrifugal fan suction port through the same connection button;

[0085] A DC motor 305 is respectively arranged in the two motor cavities 30102 on one side of the seed-flocculation separation bin, and a wiring channel is arranged between the two motor cavities to facilitate wiring between the two motors; one end of the motor electrode sheet is placed at the bottom of the motor cavity and connected to the wire, and the wire is led out from the rear end of the seed-flocculation separation bin through the internal wiring hole 30112; a synchronous belt transmission device is installed on the motor head to transmit the torque to the transmission shaft of the brush roller 309; the synchronous belt transmission device includes two synchronous pulleys, one large and one small, and a synchronous belt 307, the small pulley (i.e., the small synchronous pulley 306) is fixed on the motor head, and the large pulley (i.e., the large synchronous pulley 308) is fixed on the brush roller transmission shaft 310, which can reduce the rotation speed while increasing the torque; the brush roller transmission shaft is installed in the through hole on one side of the separation bin; one end of the brush roller is fixed on the transmission shaft, and the other end is fixed to the through hole on the other side of the seed-flocculation separation bin through a quick-release end cover 304;

[0086] The seed fluff separation bin is equipped with a motor on one side and a bin cover (i.e., separation bin cover 302) which is installed through self-tapping screws (such as M2.5 self-tapping screws 303) and countersunk holes so that each component is enclosed in the bin body.

[0087] Further references Figure 11-12 , the collecting bin 13 is used to collect and screen out the completely separated seeds; the collecting bin includes three layers, and the whole is fixed to the bottom of the seed-flocculation separation bin through a chute (i.e., the collecting bin positioning chute 30110);

[0088] The first layer of the collecting bin is used to isolate oversized impurities and incompletely separated seed flocs, and a brush plate 131 with diamond-shaped holes is installed through a chute structure;

[0089] The second layer is used for collecting seeds, and a seed collecting frame 134 is installed through a chute structure;

[0090] The third layer is used to collect seed coat dust, etc.

[0091] The centrifugal fan 5 has a front air intake pipe connected to the seed-flocculation separation bin via a connecting button, and a handle (i.e., a lifting handle 14) is provided on the connecting pipe in front of the air intake, which faces upward during installation for easy holding; the fan air outlet is placed at the bottom, and a three-way valve 11 is installed at the air outlet; a fan handle 7 is installed at the motor housing at the rear end of the fan, with the bottom of the handle facing upward, and a fan switch button 6 is installed on the handle.

[0092] The three-way valve 11 has an inlet connected to the air blowing port of the fan and two outlets, one of which is connected to the seed-flocculation circulation port 30105 above the seed-flocculation separation bin through a circulation pipe 12, and the other is connected to the side interface of the collection bag 8 (i.e., the floc discharge pipe interface 804) through the floc discharge pipe 10.

[0093] refer to Fig.14 and Fig.15The collecting bag 8 is provided with a zipper at the upper opening, which is opened when cleaning the seed fluff; two straps (i.e., poplar fluff collecting bag straps 803) are provided in front of the collecting bag to facilitate the operator to carry the collecting bag on his back.

[0094] The battery pack 9, which contains batteries 902, is located below the collection pack as a whole and is connected to the collection pack. A main power switch 901 is arranged on one side of the battery pack; the battery pack outputs current to the centrifugal fan and two motors through the wiring channel 30109 inside the device.

[0095] The following is a description of the application of the separation device in separating poplar seeds.

[0096] 1. Seed and flocculation separation device

[0097] A roller-brush portable seed-fluff separation device for poplar seeds comprises a duckbill-shaped suction nozzle 1, a seed-fluff separation bin 3, a collection bin 13, a centrifugal fan 5, a three-way valve 11, a poplar-fluff collection bag 8, a battery pack 9 and a plurality of connecting pipes.

[0098] The duckbill suction nozzle 1 has a duckbill shape at its front end; the seed-fluff separation bin 3 is internally equipped with two sets of DC motors 305 and synchronous belt transmission devices, and is equipped with two brush rollers 309 using a quick-release end cover 304; the collection bin 13 is internally equipped with a diamond-shaped hole brush plate 131 and a seed collection frame 134 through a slide groove structure, and is divided into three layers; the centrifugal fan 5 is equipped with a fan handle 7 at the rear end, and its air intake port is connected to the seed-fluff separation bin 3, and the air blowing port is equipped with a three-way valve 11, one end of which is connected to the seed-fluff separation bin 3, and the other end is connected to the poplar fluff collection bag 8; the battery pack 9 is placed below the poplar fluff collection bag 8 and combined with the collection bag.

[0099] Seed-flocculation separation bin 3: Two DC motors and two sets of synchronous belt transmission devices are built in to drive the brush roller to perform rolling brush movement; a built-in wiring channel 30109 is provided to allow the power lines of the two DC motors to be led out at the rear end of the seed-flocculation separation bin; a separation bin cover 302 is provided and is installed on the seed-flocculation separation bin housing 301 using three M2.5 self-tapping screws 303.

[0100] Brush roller 309: one end is connected to the synchronous belt transmission device through the brush roller transmission shaft 310, and the other end uses a quick-release end cover 304 and is installed on the (seedling) separation bin shell 301.

[0101] The (seedling) separation bin shell 301: the front end is a duckbill-shaped suction nozzle interface (i.e., the suction nozzle connection port 30101), the rear end is a fan interface (i.e., the fan connection port 30104), the lower side is provided with a collection bin positioning slide groove 30110 of the collection bin, and two rows of comb teeth (i.e., the shell comb teeth 30111) are designed at the lower opening; a series of cavities are arranged on the right side for installing a DC motor and a synchronous belt transmission device, and a wiring channel is designed in the cavity so that the wiring of the two motors is led out from the rear end fan interface, three 2.5mm circular holes (i.e., bin cover mounting holes 30108) inside the cavity are used to cooperate with the self-tapping screws of the bin cover, and two 25mm large holes (i.e., the brush roller drive shaft holes 30107) are used to install the drive shaft of the brush roller; there are two quick-release holes 30106 on the left side that cooperate with the quick-release end cover 304 of the brush roller; a seeding floc circulation port 30105 for circulating seeding flocs is opened on the top.

[0102] refer to Fig.16 The front interface of the seed-flocculation separation bin 3 is connected to the duckbill suction nozzle 1 through a connecting button (i.e., locking button 2) / locking button slot 30103 structure, and the rear interface is connected to the pipe of the centrifugal fan suction port through the same connecting button.

[0103] refer to Figure 11 to Figure 13 , Collection bin: used to collect and screen out completely separated seeds. The collection bin is fixed to the bottom of the seed-flocculation separation bin through a chute;

[0104] The top opening is designed with arc-shaped comb teeth, and the interior is divided into three layers in total. The first layer is equipped with a diamond-shaped hole brush plate through a slide groove, the second layer has a slide groove on the opposite side to install the seed collection frame, and the third layer is the bottom of the collection bin.

[0105] The distance between the outer contour of the two brush rolls after installation and the inner contour of the cavity of the separation chamber shell is 5mm;

[0106] The height of the comb teeth of the roller is 12mm; the distance between the top of the comb teeth on one roller and the surface of the other roller is 18mm; the height of the comb teeth of the shell is 8mm, and the height of the comb teeth of the collection bin is 10mm.

[0107] Diamond hole brush plate: The diagonal length of the diamond hole is 4mm×2mm, the vertical spacing between holes is 6mm, and the horizontal spacing is 4mm;

[0108] Seed collection frame: There is a handle on the outside of the frame, and holes with a diameter of 1mm are designed at the bottom of the frame, with 2mm intervals between the holes in the top, bottom, left and right directions;

[0109] The brush roll speed is 600 rpm;

[0110] Centrifugal fan: The front end is the air intake port, the lower end is the air outlet, and the rear end is the outer side of the motor that drives the blades. It is equipped with a lifting handle, and the fan switch button is arranged in the middle of the handle.

[0111] The centrifugal fan has a front air inlet pipe connected to the seed-flocculation separation bin via a connection button (with Fig.16 The principle of the connection structure shown is the same), a handle is provided on the connecting pipe in front of the air inlet, and the handle faces upward during installation; the fan air outlet is placed at the bottom, and a three-way valve is installed at the air outlet; the fan handle is installed on the motor housing at the rear end of the fan, and the bottom of the handle is installed upward.

[0112] refer to Fig.14 and Fig.15 , Poplar fluff collection bag: Made of nylon material, the poplar fluff will not escape while being ventilated; the front end is designed with a shoulder strap, the upper end has a zippered cover, and the side has a poplar fluff inlet; the lower end is connected to the battery pack, and the battery pack is equipped with a main power switch. The upper opening of the collection bag is equipped with a zipper, which is opened when cleaning the poplar fluff; the front of the collection bag is equipped with two shoulder straps, which is convenient for the operator to carry the collection bag on the back;

[0113] The battery pack is located below the seed fluff collection pack and is connected to the seed fluff collection pack. A main power switch is arranged on one side of the battery pack.

[0114] 2. Seed and floc separation method

[0115] The following is an application of the device in a poplar seed fluff separation process to explain the working principle of the device:

[0116] Initial state:

[0117] The operator puts the poplar fluff collection bag 8 on his back, holds the fan handle 7 with one hand, holds the lifting handle 14 of the centrifugal fan connecting pipe 4 with the other hand, aims the duckbill suction nozzle 1 of the device at the seed-flocculation combination, opens the three-way valve 11 in the circulation pipe 12, closes the fluff discharge pipe 10, and turns on the main power switch 901 at the battery pack 9;

[0118] Action 1:

[0119] Press the fan switch button 6, the centrifugal fan 5 starts to work, and after a proper amount of seed-flocculation combination is sucked from the duckbill suction nozzle 1, lift the suction nozzle;

[0120] Action 2:

[0121] The DC motor 305 rotates, driving the brush roller 309 to rotate through the synchronous pulley, and the seed-flocculation combination sucked in is separated from some seeds in the seed-flocculation separation chamber 3 by the roller brush between the two brush rollers, and the roller brush between the brush roller 309 and the comb teeth 30111 of the lower shell and the comb teeth 132 of the collection chamber;

[0122] Action 3:

[0123] Due to the effect of gravity and the obstruction of the diamond-shaped hole brush plate 131 in the collecting bin 13, the separated seeds and smaller impurities fall into the collecting bin 13 below, and the seed-flocculation combination that is not completely separated, and the fruit shells that are larger than the seeds, etc. remain in the seed-flocculation separation bin 3; the seeds fall into the seed collecting frame 134, and the seed coats, dust, etc. that are smaller than the seeds pass through the sieve holes at the bottom of the seed collecting frame 134 and fall into the impurity collecting bin 133 below;

[0124] Action 4:

[0125] The seed-flocculation combination that has not been completely separated, and the fruit shells that are larger than seeds, etc., are sucked into the centrifugal fan 5 through the fan suction port. At this time, the three-way valve 11 is placed in the circulation pipe 12 to open, and the fluff discharge pipe 10 is closed. The seed-flocculation combination is discharged from the fan blowing port, passes through the circulation pipe 12, and enters the seed-flocculation separation chamber 3 again from the seed-flocculation circulation port 30105;

[0126] Action 5:

[0127] These seed-flocculation combinations will repeat actions 2 to 4. After a period of circulation, the seeds in the seed collection frame 134 will no longer increase significantly. At this time, the three-way valve 11 is placed in a state where the circulation pipe 12 is closed and the fluff discharge pipe 10 is opened. The remaining poplar fluff will pass through the centrifugal fan 5 through the blowing port and the fluff discharge pipe 10, and enter the poplar fluff collection bag 8 from the fluff discharge pipe interface 804.

[0128] End Status:

[0129] After a batch of seed-flocculation separation work is completed, turn off the main power switch 901; open the poplar fluff collection bag cover 801 on the top of the poplar fluff collection bag 8, and transfer the collected poplar fluff to the collection bag; draw out the seed collection frame 134 in the collection bin 13, and put the seeds into the collection bottle; remove the collection bin 13, and clean the impurities in the impurity collection bin 133.

[0130] 3. Experiment

[0131] Combine the following Figure 18(a) to Figure 18(d) , the working principle and effect of the centrifugal fan are explained in combination with the fluid simulation software Fluent:

[0132] FIG18( a ) is a streamline diagram of a centrifugal fan when it is in operation, obtained by fluid simulation using Fluent; it reflects the trajectory of the airflow entering from the air inlet and exiting from the air outlet during the operation of the centrifugal fan, indicating that the centrifugal fan can cause the seed flocs to move along this trajectory.

[0133] Due to the lack of elastic modulus and model parameters of poplar seeds and seed flocs, spherical particles are used instead of seeds when using Fluent's discrete phase simulation, and only the density and dynamic and static friction coefficients of the currently measured poplar seeds are used for calculation to obtain the approximate particle motion trajectory to verify the feasibility of using a centrifugal fan to transport seeds.

[0134] The seed calculation parameters are as follows

[0135]

[0136] The fan calculation parameters are as follows

[0137]

[0138] Figure 18(b) is a diagram showing the trajectory of seeds being sucked in from the air intake of the fan;

[0139] Figure 18(c) is a diagram showing the trajectory of seeds being discharged from the air outlet of the fan;

[0140] Figure 18(d) is a diagram showing the overall movement trajectory of the seeds in the centrifugal fan.

[0141] Figure 18(b) to Figure 18(c) The three figures reflect the whole process of seeds being sucked in from the air inlet, driven by the air flow in the centrifugal fan, reaching the air outlet and being discharged, which shows that it is efficient and feasible to use a centrifugal fan to circulate seeds.

[0142] After the seeds enter the centrifugal fan, the blades and centrifugal force cause the seeds to be dispersed. After circulating into the separation chamber, better separation effect can be achieved.

Claims

1. A portable roller brush seed-flocculation separation device, characterized in that It includes a seed-flocculation separation chamber, a collection chamber, a centrifugal fan and a collection bag; The air inlet of the seed-flocculation separation bin is connected to the suction nozzle; the seed outlet of the seed-flocculation separation bin is connected to the seed inlet of the collection bin; the air outlet of the seed-flocculation separation bin is connected to the air intake of the centrifugal fan through the air duct; the air outlet of the centrifugal fan is connected to the air inlet of the controllable three-way valve, and the two air outlets of the three-way valve are respectively connected to the air inlet of the collection bag through the fluff discharge pipe and the circulation port of the seed-flocculation separation bin through the circulation pipe; the air inlet of the seed-flocculation separation bin sucks in the seed-flocculation separation bin, and the seed-flocculation is separated into seeds and fluff by the seed-flocculation separation bin, and the seeds enter the collection bin, and the fluff passes through the air outlet of the centrifugal fan and the air inlet of the three-way valve in turn with the wind, and then enters the collection bag or returns to the seed-flocculation separation bin through the circulation port controlled by the three-way valve; The seed-flocculation separation bin comprises a separation bin shell and two parallel brush rollers installed in the cavity of the separation bin shell; the air inlet and air outlet of the seed-flocculation separation bin are respectively opened in the middle of the front and rear sides of the separation bin shell, and the axes of the air inlet and air outlet are perpendicular to the axis of the roller; a rectangular seed outlet is opened on the bottom surface of the separation bin shell; The top of the collecting bin is provided with a seed inlet corresponding to the seed outlet; the collecting bin is detachably connected to the bottom of the seed-flocculation separation bin; The two brush rollers are driven by a driving device to rotate in opposite directions; the brush roller is composed of comb teeth connected to the outside of a roller; the comb teeth have multiple rows along the axial direction of the roller, and each row of comb teeth has multiple comb teeth with uniform intervals; the comb teeth in each row are evenly distributed around the axis of the roller; the axis of each comb tooth vertically passes through the axis of the roller.

2. The seed-flocculation separation device according to claim 1 is characterized in that The front end of the nozzle is duckbill shaped.

3. The seed-flocculation separation device according to claim 1 is characterized in that The outer contours of the two brush rollers after installation correspond to the shape of the inner contour of the cavity of the separation bin shell, and the spacing between the outer contour and the inner contour ranges from 3 to 8 mm.

4. The seed-flocculation separation device according to claim 1 is characterized in that A diamond-shaped hole brush plate is detachably connected below the seed inlet of the collection bin, and a seed collection frame is detachably connected below the diamond-shaped hole brush plate, and sieve holes are distributed on the bottom surface of the seed collection frame; the bottom of the seed collection frame is the bottom of the collection bin; For diamond hole brush plate: the diagonal length of the diamond hole ranges from (4 to 6 mm) × (2 to 4 mm), the interval between adjacent diamond holes in front and back ranges from 4 to 6 mm, and the interval between adjacent diamond holes in left and right ranges from 2 to 4 mm; For the seed collecting frame: a handle is connected to the outside of the seed collecting frame, the diameter of the sieve holes is 1 to 1.5 mm, and the interval between adjacent sieve holes is 1 to 2 mm.

5. The seed-flocculation separation device according to claim 1 is characterized in that The driving device is a DC motor; the output shaft of the DC motor is connected to the synchronous belt transmission device; one end of the brush roller is connected to the synchronous belt transmission device through a transmission shaft, and the other end of the brush roller is connected to a quick-release end cover; a through hole for connecting the transmission shaft of the brush roller is opened on one side of the cavity of the separation bin shell, and a quick-release hole matching the quick-release end cover is opened on the other side of the cavity of the separation bin shell; the two DC motors are located outside the cavity of the separation bin shell, and the DC motors and the synchronous belt transmission device are both on the same side of the brush roller, and the separation bin shell is detachably connected to the separation bin shell to seal the DC motor, the synchronous belt transmission device and the transmission shaft of the brush roller; The detachable connection structure between the collecting bin and the seed-flocculation separation bin is as follows: a pair of slide grooves are installed on the bottom surface of the seed-flocculation separation bin shell as collecting bin positioning slide grooves, and the seed outlet is between the pair of slide grooves; a pair of convex ridges are installed on the top surface of the collecting bin, and the seed inlet is between the pair of convex ridges; when the collecting bin is connected to the flocculation separation bin, the convex ridges are in the corresponding slide grooves.

6. The seed-flocculation separation device according to claim 1 is characterized in that for the brush roll: each comb tooth is composed of a plurality of bristles with a diameter of 0.2 mm, and the bristles are made of elastic material; the height of the comb teeth ranges from 10 to 15 mm; the minimum distance between the top of the comb teeth on one roller and the surface of the other roller ranges from 15 to 25 mm; the speed range of the brush roll is 500 to 800 rpm; For the seed-flocculation separation chamber: there is a row of shell comb teeth on the inner edges of the two opposite sides of the seed outlet, and the two rows of shell comb teeth are facing each other; the height range of the shell comb teeth is 6 to 10 mm; For the collection bin: there are two sets of parallel comb teeth in the seed inlet as the collection bin comb teeth; each set of comb teeth has two rows in pairs, and each row of comb teeth has multiple teeth with uniform spacing; the height range of the collection bin comb teeth is 8 to 12 mm; The comb teeth of the brush roller, the comb teeth of the seed-flocculation separation chamber and the comb teeth of the collection chamber are arranged in parallel. When the collecting bin is connected to the floc separation bin, the projections of the two brush rollers are respectively between two rows of comb teeth of the same group of the collecting bin; and each comb tooth of the collecting bin is obliquely upward toward the corresponding brush roller.

7. The seed-flocculation separation device according to claim 1 is characterized in that The battery pack of the centrifugal fan is connected to the outside and bottom of the collection pack and forms an integrated structure with the collection pack; The collecting bag is connected with a shoulder strap, and the opening of the collecting bag that can be opened and closed is at the top of the collecting bag; the lower part of the side of the collecting bag is provided with a fluff inlet for connecting to a fluff discharge pipe; The flocculent discharge pipe is a hose; The air duct is a rigid tube; The centrifugal fan is directly connected to the three-way valve; a fan handle is connected to the centrifugal fan body, and a switch button of the centrifugal fan is installed on the fan handle.

8. The seed-flocculation separation device according to claim 1, characterized in that The seed-flocculation separation device is suitable for separating the seed-flocculation of poplar seeds; The distance between the outer contour of the two brush rolls after installation and the inner contour of the cavity of the separation chamber shell is 5mm; The diagonal length of the diamond holes is 4mm×2mm, the interval between adjacent diamond holes in front and back is 6mm, and the interval between adjacent diamond holes in left and right is 4mm; The diameter of the sieve holes at the bottom of the seed collection frame is 1mm, and the interval between adjacent sieve holes is 2mm; The height of the brush teeth is 12 mm; the distance between the top of the teeth on one roller and the surface of the other roller is 18 mm; the speed of the brush is 600 rpm; The height of the shell comb teeth is 8mm, and the height of the collection bin comb teeth is 10mm.

9. A seed-flocculation separation method using the roller-brush-type portable seed-flocculation separation device, comprising the following steps: The device preparation stage is characterized by also including an operation stage, and the steps of the operation stage include: S1) Action 1: Turn on the fan switch button, the centrifugal fan starts to work, and an appropriate amount of seed-flocculation combination is sucked into the cavity of the seed-flocculation separation bin from the suction nozzle, and the suction nozzle is lifted; S2) Action 2: The two DC motors drive the brush rollers to rotate, and the seed-flocculation combination passes through the roller brushes between the two brush rollers, as well as the roller brushes between the brush rollers and the comb teeth of the housing and the comb teeth of the collection bin, so that some seeds are separated; S3) Action 3: Due to the effect of gravity and the obstruction of the diamond-shaped hole brush plate in the collection bin, the separated seeds and small impurities smaller than seeds fall into the collection bin below; the seed-flocculation combination that is not completely separated and large impurities larger than seeds remain in the seed-flocculation separation bin; The seeds fall into the seed collection frame, and small impurities pass through the sieve holes at the bottom of the seed collection frame and fall into the impurity collection bin below; S4) Action 4: The seed-flocculation combination and large impurities that are not completely separated are sucked into the centrifugal fan; at this time, the three-way valve is placed in the state where the circulation pipeline is open and the flocculus discharge pipeline is closed, and the seed-flocculation combination and large impurities are discharged from the blowing port of the centrifugal fan, and enter the seed-flocculation separation chamber again through the circulation pipeline and the seed-flocculation circulation port; S5) Action 5: After repeating actions 2 to 4, the seeds in the seed collection frame have not increased significantly; at this time, the three-way valve is placed in a state where the circulation pipeline is closed and the fluff discharge pipeline is opened; the separated fluff enters the collection bag from the fluff discharge pipeline interface through the blowing port of the centrifugal fan; S6) End state: After a batch of seed-flocculation separation is completed, the seed-flocculation separation device is turned off; the collection bag is opened, and the collected poplar fluff is transferred to the collection bag; the seed collection frame is pulled out, and the seeds are put into the collection bottle; the collection bin is removed, and the impurities in the impurity collection bin are cleaned.

10. The seed-flocculation separation method according to claim 9, characterized in that During the preparation stage, the operator carries the collection bag on his back, holds the fan handle with one hand and the lifting handle of the hard air duct with the other hand, and aims the suction nozzle of the device at the seed-flocculation combination; sets the three-way valve to the state in which the circulation pipe is open and the flocculant discharge pipe is closed, and turns on the main power switch at the battery pack.

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