CN108620330B - Double-stage rotary combined multi-layer screen - Google Patents
Double-stage rotary combined multi-layer screen Download PDFInfo
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- CN108620330B CN108620330B CN201810722871.2A CN201810722871A CN108620330B CN 108620330 B CN108620330 B CN 108620330B CN 201810722871 A CN201810722871 A CN 201810722871A CN 108620330 B CN108620330 B CN 108620330B
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- screen
- plate
- batching
- upper layer
- guide plate
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- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 239000012535 impurity Substances 0.000 claims description 105
- 239000000463 material Substances 0.000 claims description 80
- 238000007599 discharging Methods 0.000 claims description 64
- 238000012216 screening Methods 0.000 claims description 39
- 238000005192 partition Methods 0.000 claims description 36
- 238000007670 refining Methods 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 206010010904 Convulsion Diseases 0.000 claims description 5
- 230000036461 convulsion Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 description 36
- 230000001105 regulatory effect Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 238000007873 sieving Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4663—Multi-layer screening surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/02—Arrangement of air or material conditioning accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to a double-stage rotary combined type multi-layer sieve, which comprises a rack, a hanging bracket, a sieve body, an air draft feeding system and a power transmission system, wherein the sieve body is arranged on the hanging bracket, the hanging bracket is provided with a hanging rod, the upper end of the hanging rod is hinged with a rack ball, the lower end of the hanging rod is hinged with the hanging rack ball, the power transmission system is arranged at the lower end of the hanging bracket, the power transmission system drives the hanging bracket and the sieve body to do plane rotary motion, the sieve body comprises two sieve boxes, the two sieve boxes have the same structure.
Description
Technical Field
The invention relates to the technical field of grain screening and impurity removing equipment, in particular to a double-stage rotary combined type multilayer screen.
Background
Before the grain is put in storage, the grain contains impurities and dust, and the impurities are put in storage in the grain, so that the grain food can generate heat and mould, and the grain can not flow smoothly when being put out of storage, thereby causing serious loss of the grain. Therefore, the grains must be cleaned before being put in storage, and impurities and part of dust in the grains are screened out. At present, the devices for screening and dedusting grains in the market are various, such as a vibrating screen, a plane rotary screen and the like, but the existing screening and dedusting devices are single in most functions and low in screening efficiency, and cannot meet the screening requirements of large grain depots.
Disclosure of Invention
In summary, in order to overcome the defects of the prior art, the invention provides a double-stage rotary combined multi-layer sieve, which is provided with two sieve boxes, wherein multiple layers of sieve grids which work simultaneously are arranged in each sieve box, grain materials are uniformly fed into different sieve grids to be screened by arranging a uniform batching device so as to remove large-particle impurities and small-particle impurities in grains, meanwhile, an air draft system is arranged to extract light and fine impurities such as dust in grains, so that the purposes of screening, dedusting and impurity removal are achieved, and the screening and impurity removal efficiency is improved by the two sieve boxes and the multiple layers of sieve grids, so that the screening requirement of a large grain depot is met.
In order to solve the technical problems, the invention adopts the following technical scheme:
A dual stage rotary combined multi-deck screen, wherein: including frame, gallows, screen frame, convulsions feed system and power transmission system, the screen frame set up on the gallows, the gallows on be provided with the jib, the jib upper end is articulated with the frame ball, the lower extreme and the gallows ball of jib articulated, power transmission system set up at the gallows lower extreme, power transmission system take gallows and screen frame to do plane gyration motion, the screen frame include two sieve cases, two sieve case structures are the same all include box, baffle, even batcher and discharging ware, the box be both sides open-ended frame structure, its one side sets up even batcher, its opposite side sets up the discharging ware, the box in be provided with a plurality of baffles along its direction of height, a plurality of baffles cut apart the box inner chamber into a plurality of screening chambeies, the screening intracavity be provided with the screening grid group, the screening grid group include from last screening grid and the lower grid that arranges in the screening intracavity, the hole of lower grid is less than the hole of last screening grid, last screening grid and the lower grid and the same frame structure set up the even batcher, the feeding hopper is cut apart the impurity material in the box with the screening chamber, the feeding hopper is cut apart to the big, the impurity is cut apart to the feeding hopper is little, the feeding hopper is cut apart to the big impurity material in the feeding hopper, the feeding hopper is cut apart to the big impurity in the feeding hopper, the feeding hopper is cut apart the big impurity and the feeding hopper is cut into the big, the feeding hopper is cut into the big impurity and the size into the size, and the size is cut into the size with the big, and the size of the size is even size in the size of the feeding hopper.
The even batcher include batching framework, batching baffle, flitch, batching framework upper end opening, the batching framework in be provided with a plurality of batching baffles, a plurality of batching baffles cut apart into a plurality of vertical unloading passageways with batching framework inner chamber, the medial surface of batching framework on be provided with a plurality of batching mouths, the upper end opening of batching framework is passed through unloading passageway intercommunication batching framework, the upper end opening of batching framework communicates the feeder hopper, the batching mouthful in be provided with the flitch, the flitch seal the unloading passageway of batching mouthful below, a plurality of batching mouthful in the screening intracavity of intercommunication respectively, one side of batching framework articulated with the box of screen box, the opposite side of batching framework is pressed tightly with the box of screen box through closing device.
The compressing device comprises a compressing seat fixed between two screen boxes, a compressing screw rod is hinged to the compressing seat, one end of the compressing screw rod is hinged to the compressing seat, a compressing nut is arranged at the other end of the compressing screw rod, the compressing screw rod is arranged between the two screen boxes, and the compressing screw rod is arranged in the compressing plate in a penetrating mode.
The power transmission system comprises a motor, a driving belt wheel, a driven belt wheel, a rotating shaft and a transmission bottom plate, wherein the transmission bottom plate is arranged at the lower end of the hanging frame, the rotating shaft is arranged at the lower end of the transmission bottom plate, the driven belt wheel is arranged on the rotating shaft, the motor is arranged on the hanging frame, the driving belt wheel is arranged on a main shaft of the motor, and the driving belt wheel is connected with the driven belt wheel through a transmission belt.
The air draft feeding system include feed system and air draft system, feed system fix and be provided with the feed inlet on the feed casing on frame top, feed casing, be provided with upper strata stock guide in the feed casing, upper strata stock guide, lower floor stock guide and lower floor's baffle, both ends and the both ends of upper strata stock guide all with feed casing fixed connection, upper strata stock guide and upper strata stock guide constitute the upper strata feed channel that the cross-sectional shape is the funnel shape, all be provided with the clearance between upper strata stock guide and the feed casing roof, lower floor stock guide both ends and lower floor's baffle both ends all with feed casing fixed, lower floor stock guide and lower floor's baffle constitute the cross-sectional shape and be the lower floor feed channel of funnel shape, lower floor stock guide and upper strata stock guide between have the clearance, upper strata feed channel upper end opening correspond the feed inlet, upper end opening of upper strata stock guide's upper end corresponds the upper strata feed channel's two lower floor's feed channel's two feed inlets, two feed hopper's feed inlet's upper end, two feed inlet's feed inlet that the feed hopper is set up respectively.
The utility model provides an exhaust system include air-supply line, lower floor's convulsions passageway, switching-over wind channel, upper exhaust passageway and air-extracting opening, the air-supply line set up in one side of the discharging ware of screen frame, the lower extreme opening intercommunication discharging ware's grain cleaning export, lower floor's convulsions passageway, switching-over wind channel and upper exhaust passageway set up in the feed casing, one side of feed casing is provided with the air-extracting opening, the feed casing in be provided with upper air deflector, upper baffle, lower floor's baffle and lower floor's air deflector, upper air deflector is connected with upper baffle, form upper exhaust passageway between upper air deflector and the roof of feed casing, lower floor's air deflector and lower floor's baffle are connected with lower baffle, upper guide plate and lower floor's baffle between form the switching-over wind channel, upper exhaust passageway link to the mouth on the casing, lower floor's air-extracting passageway link to the inlet that sets up in the frame, lower floor's air-extracting passageway link to each other through the switching-over wind channel.
The beneficial effects of the invention are as follows:
1. The invention is provided with two screen boxes, each screen box is internally provided with a plurality of layers of screen grids which work simultaneously, grain materials are evenly fed into different screen grids for screening by arranging the uniform batching device so as to remove large-particle impurities and small-particle impurities in grains, and meanwhile, an air draft system is arranged to extract light and fine impurities such as dust in grains, thereby achieving the purpose of screening, dedusting and impurity removal.
2. The invention provides a sieve box, which is characterized in that a uniform distributor is arranged on one side of the box body of the sieve box, materials are uniformly distributed through the uniform distributor and are simultaneously conveyed to an upper sieve lattice in a sieving cavity, a sieve body performs plane rotation motion, sieve lattice groups in a plurality of sieving cavities simultaneously perform sieving operation on the materials, wherein the materials are sieved by the upper sieve lattice, small impurities such as clean grains, small particles and dust fall onto a lower sieve lattice from the sieve holes of the upper sieve lattice, the impurities with larger particles enter a large impurity pipe along the upper sieve lattice, the clean grains and the small impurities enter the lower sieve lattice and are sieved by the lower sieve lattice, the clean grains flow out from a grain outlet pipe, the small impurities fall onto a baffle plate and enter the small impurity pipe along the baffle plate to be discharged, and the sieve lattice groups in the plurality of sieving cavities simultaneously perform sieving operation on the grain materials.
3. The uniform distributor of the invention divides the inner cavity of the distributing frame into a plurality of vertical blanking channels through the distributing partition plate, then the distributing opening is arranged on the inner side surface of the distributing frame, the arrangement height of the distributing opening is respectively the same as the arrangement height of the upper screen grids in the plurality of screening cavities, then the blanking plate is arranged at the lower edge of the distributing opening, the blanking channels below the distributing opening are closed by the blanking plate, grains entering from the upper end opening of the distributing frame are fed downwards along the blanking channels, and after being blocked by the blanking plate, the grains flow out along the blanking plate and the distributing opening, and then the grain materials enter the upper screen grids. Through setting up a plurality of batching mouths that correspond respectively with last screening check of screening intracavity, realize carrying out even batching to a plurality of screening chambeies of screening incasement simultaneously, realize the even distribution of grain material at a plurality of screening chambeies, simple structure, powerful, think about ingenious, realize screening chamber simultaneous feed, the batching is even.
4. The lower end pipe orifice of the air inlet pipe is communicated with the lower end of the grain outlet frame body, the upper end of the air inlet pipe is communicated with the exhaust channel arranged in the feeding shell, and the exhaust fan is used for exhausting light and fine impurities and dust in clean grains flowing out of the grain outlet through the exhaust channel and the air inlet pipe, so that the dust removal purpose is achieved, the grain screening machine is multifunctional, and grain materials can be screened, decontaminated, classified and dedusted.
5. The air draft channel comprises an upper air draft channel, a lower air draft channel and a reversing air channel, wherein the air inlet pipe is communicated with the lower air draft channel and the grain cleaning channel, when dust and other light and fine impurities in the extracted grain cleaning flow pass through a lower V-shaped part, the space of the lower V-shaped part is relatively large to the air inlet pipe, the space is increased in the space of the lower V-shaped part, the air flow speed is low, the light and fine impurities in the air flow settle in the space of the lower V-shaped part and are discharged by a lower dust discharge auger, then the air flow enters the reversing air channel for reversing, the space is contracted again, the flow speed is increased, when the air flow passes through grain material flows of the lower feeding channel and the upper feeding channel, dust and light and fine impurities in the grain material flows are taken away, when the air flow passes through the upper V-shaped part, the space is increased again, and the dust and the light and fine impurities in the air flow are settled again and discharged. Thereby realizing secondary air draft dust removal, and the design is novel and the conception is ingenious.
Drawings
FIG. 1 is a schematic diagram of a dual stage rotary combined multi-deck screen;
FIG. 2 is a schematic illustration of a dual stage rotary combined multi-deck screen with the suction feed system removed;
FIG. 3 is a left side schematic view of FIG. 2;
FIG. 4 is a schematic top view of FIG. 2;
FIG. 5 is a schematic view of the structure of a screen box;
FIG. 6 is a schematic view of the structure of the dispenser;
FIG. 7 is a schematic view of the structure of the tap;
FIG. 8 is a schematic diagram of the configuration of an updraft feed system;
FIG. 9 is a schematic structural view of a refining apparatus;
FIG. 10 is a schematic view of a discharge adjustment device;
FIG. 11 is a schematic view of the structure of the air intake adjusting device;
Fig. 12 is a schematic structural view of the exhaust air adjusting device and the intermediate air adjusting device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, a double-stage rotary combined type multi-layer screen comprises a frame 1, a hanging frame 2, a screen 3, an exhaust feeding system and a power transmission system 4, wherein the screen 3 is arranged on the hanging frame 2, a hanging rod is arranged on the hanging frame 2, the upper end of the hanging rod is in ball hinge connection with the frame 1, the lower end of the hanging rod is in ball hinge connection with the hanging frame 2, the power transmission system 4 is arranged at the lower end of the hanging frame 2, the power transmission system 4 drives the hanging frame 2 and the screen 3 to perform plane rotary motion, the power transmission system 4 comprises a motor 41, a driving pulley 42, a driven pulley 43, a rotating shaft 44 and a transmission bottom plate, the transmission bottom plate is arranged at the lower end of the hanging frame 2, the rotating shaft 44 is provided with the driven pulley 43, the motor 41 is arranged on the hanging frame 2, the driving pulley 42 is arranged on a main shaft of the motor 41, and the driving pulley 42 is connected with the driven pulley 43 through a transmission belt. The screen 3 comprises two screen boxes 5, the two screen boxes 5 have the same structure and comprise a box body 51, a partition plate 52, a uniform distributor 6 and a discharger 7, the box body 51 is of a frame body structure with two open sides, one side of the box body is provided with the uniform distributor 6, the other side of the box body is provided with the discharger 7, the box body 51 is internally provided with the two partition plates 52 along the height direction, the two partition plates 52 divide the inner cavity of the box body 51 into three screening cavities 53, the screening cavities 53 are internally provided with screen grid groups, the screen grid groups comprise an upper screen grid 54 and a lower screen grid 55 which are arranged in the screening cavities 53 from top to bottom, the pore space of the lower screen grid 55 is smaller than that of the upper screen grid 54, the upper screen grid 54 and the lower screen grid 55 divide the screening cavities 53 into a large impurity cavity 56, a grain cleaning cavity 57 and a small impurity cavity 58, the box body 51 on be provided with the feeder hopper 59, feeder hopper 59 intercommunication convulsions feed system and even batcher 6, even batcher 6 includes batching framework 61, batching baffle 62, flitch 63 down, batching framework 61 upper end opening, be provided with five batching baffles 62 in the batching framework 61, five batching baffles 62 cut apart into six vertical unloading passageway 64 with batching framework 61 inner chamber, the medial surface of batching framework 61 on be provided with six batching mouths 65, every batching mouths 65 intercommunication unloading passageway 64, six batching mouths 65 divide three-layer arrangement, two batching mouths 65 of the upper strata correspond the screening chamber 53 of the uppermost one of three screening chambers 53, two batching mouths 65 of middle level correspond the screening chamber 53 of middle level, two batching mouths 65 of lower floor correspond the screening chamber 53 of lower floor.
The batching mouth 65 pass through the upper end opening of feed proportioning frame 61, the upper end opening of feed proportioning frame 61 communicates feeder hopper 59, batching mouth 65 in be provided with blanking plate 63, blanking plate 63 seal the unloading passageway 64 below batching mouth 65, one side of batching frame 61 articulated with the box 51 of sieve case 5, the opposite side of batching frame 61 compresses tightly with the box 51 of sieve case 5 through closing device. The compressing device comprises a compressing seat 66 fixed between the two screen boxes 5, a compressing screw 67 is hinged to the compressing seat 66, one end of the compressing screw 67 is hinged to the compressing seat 66, a compressing nut 68 is arranged at the other end of the compressing screw 67, the compressing screw 67 is arranged between the two screen boxes 5, and the compressing screw 67 is arranged in a compressing plate 69 in a penetrating mode. The pressing nuts 68 are tightened, and the uniform distributor 6 on the two screen boxes 5 can be pressed simultaneously by the pressing plates 69.
As shown in fig. 7, the discharger 7 comprises a discharging frame 71, a discharging frame 72, a big impurity pipe 73, a small impurity pipe 74, a big impurity partition 75, a small impurity partition 76 and a discharging plate 77, one side of the discharging frame 71 is hinged with the box 51 of the screen box 5, the other side of the discharging frame 71 is tightly pressed with the screen box 5 through a pressing device, the pressing device and the pressing device on the uniform proportioning device 6 are identical in structure, two small impurity partition 76 are arranged in the discharging frame 71, the two small impurity partition 76 corresponds to the partition 52 in the box 51 of the screen box 5, the two small impurity partition 76 divides the discharging frame 71 into three discharging cavities 78, the discharging cavities 78 are internally provided with the big impurity partition 75 and the discharging plate 77 from top to bottom, the big impurity partition 75 corresponds to the upper sieve lattice 54 in the box 51, the big impurity partition 75 and the discharging plate 77 divide the discharging cavities 78 into big impurity discharging bin 79 and the small impurity bin 710, the two small impurity partition 76 are arranged in the discharging frame 71 and correspond to the partition 72, the two small impurity partition walls 71 are arranged at the two sides of the big impurity partition 71 are communicated with the big impurity partition 713, the big impurity partition 71 is communicated with the small impurity box 72, the big impurity partition 71 is arranged at the two sides of the big impurity partition 71 and the small impurity partition 71 is communicated with the big impurity partition 71, and the big impurity partition 73 is communicated with the small impurity box 72, and the small impurity partition 71 is communicated with the small impurity box 71. The large impurity discharging bin 79, the grain discharging bin 710 and the small impurity discharging bin 711 are respectively provided with a guide plate 716, the guide plates 716 in the large impurity discharging bin 79 incline to the large impurity outlet 712 from one side of the large impurity discharging bin 79, the guide plates 716 in the grain discharging bin 710 incline to the grain outlet 714 from two sides of the grain discharging bin 710, and the guide plates 716 in the small impurity discharging bin 711 incline to the small impurity outlet 713 from one side of the small impurity discharging bin 710.
As shown in fig. 8 and 9, the exhaust feeding system is disposed at the top end of the frame 1 and comprises a feeding system 8 and an exhaust system 9, the feeding system 8 is fixed on a feeding housing 81 at the top end of the frame 1, a feeding port 82 is disposed on the feeding housing 81, an upper layer material guiding plate 83, an upper layer material sliding plate 84, a lower layer material guiding plate 85 and a lower layer baffle 86 are disposed in the feeding housing 81, two ends of the upper layer material sliding plate 84 and two ends of the upper layer material guiding plate 83 are fixedly connected with the feeding housing 81, the upper layer material sliding plate 84 and the upper layer material guiding plate 83 form an upper layer feeding channel 87 with a funnel-shaped section, gaps are disposed between the upper layer material guiding plate 83, the upper layer material sliding plate 84 and a top plate of the feeding housing 81, two ends of the lower layer material guiding plate 85 and two ends of the lower layer baffle 86 are fixed with the feeding housing 81, the lower layer material guiding plate 85 and the lower layer baffle 86 form a lower layer feeding channel 88 with a funnel-shaped section, a gap exists between the lower layer material guide plate 85 and the upper layer material guide plate 84, a gap exists between the lower layer baffle plate 86 and the upper layer material guide plate 83, the upper end opening of the upper layer material feed channel 87 corresponds to the material feed inlet 82, the lower end opening of the upper layer material feed channel 87 corresponds to the upper end opening of the lower layer material feed channel 88, the lower end of the lower layer material feed channel 88 is provided with two material discharge holes, the two material discharge holes are respectively connected with the material feed hoppers 59 on the two screen boxes 5, the upper layer material feed channel 87 is internally provided with a material refining device, the material refining device comprises a material refining rotating shaft 89, a material refining cam 810 and a material refining plate 811, the material refining rotating shaft 89 is arranged on the material feeding shell 81 in a penetrating manner and is in relative rotation connection with the material feeding shell 81, the material refining motor drives the material refining rotating shaft 89 to rotate outside the material feeding shell 81, the part of the refining rotating shaft 89 located in the feeding housing 81 is provided with a refining cam 810, the refining cam 810 is in contact with the bottom surface of a refining plate 811, the upper end of the refining plate 811 is hinged with the feeding housing 81, and the lower end of the refining plate 811 is a free end.
The upper layer feeding channel is internally provided with a material homogenizing device, and the material homogenizing plate 811 continuously swings up and down to play a role in uniform discharging.
As shown in fig. 10, a discharging adjusting device is disposed at a lower opening of the upper feeding channel 87, the discharging adjusting device includes an adjusting shaft 812, an adjusting plate 813, an adjusting rod 814, a lower adjusting screw 815 and an adjusting screw sleeve 816, the adjusting shaft 812 is installed in the feeding housing 81 in a penetrating manner and rotates relative to the feeding housing 81, the adjusting shaft 812 is disposed in the feeding housing 81, the adjusting plate 813 is disposed at a lower opening of the upper feeding channel 87, one end of the adjusting shaft 812 located outside the feeding housing 81 is connected with an adjusting rod 814, one end of the adjusting rod 814 is connected with the adjusting shaft 812, the other end of the adjusting rod 814 is connected with the lower adjusting screw 815, the feeding housing 81 is provided with an upper screw 817, and the upper screw 817 is connected with the lower adjusting screw 815 through the adjusting screw sleeve 816. The size of the lower end opening of the upper layer feeding channel 87 is regulated by the discharging regulating device, the uniform material distribution effect is further improved, and the feeding according to the actual production needs is realized by regulating the size of the lower end opening of the upper layer feeding channel 87.
As shown in fig. 8, the air suction system 9 includes an air inlet pipe 91, a lower layer air suction channel 92, a reversing air channel 93, an upper layer air suction channel 94 and an air suction port 95, the air inlet pipe 91 is arranged on one side of the discharger 7 of the screen body 3, the lower end opening of the air inlet pipe 91 is communicated with the lower end blanking port of the grain cleaning channel of the discharger 7, the lower layer air suction channel 92, the reversing air channel 93 and the upper layer air suction channel 94 are arranged in the feeding shell 81, the air suction port 95 is arranged on one side of the feeding shell 81, an upper layer air guide plate 96, an upper layer baffle 97, a lower layer baffle 98 and a lower layer air guide plate 99 are arranged in the feeding shell 81, the upper layer air guide plate 96 is connected with the upper layer baffle 97, an upper layer air suction channel 94 is formed between the upper layer baffle 96 and the top plate of the feeding shell 81, the lower layer air guide plate 99 is connected with the lower layer baffle 98, a lower layer air suction channel 92 is formed between the upper layer baffle plate 92 and the lower layer baffle plate 96, and the upper layer air suction channel 92 is communicated with the upper layer air suction channel 93, and the upper layer air suction channel 93 is formed between the upper layer baffle 92 and the upper layer baffle plate 93 of the reversing air guide plate 1.
The cross-sectional shapes of the upper air deflector 96 and the lower air deflector 99 are V-shaped, the lower air deflector 99 is connected with the lower material guiding plate 85, a lower dust discharging auger 910 is arranged in the lower air deflector 99, a dust discharging channel is arranged on the side face of the feeding shell 81, the lower air deflector 99 is connected with the dust discharging channel through the lower dust discharging auger 910, an upper dust discharging auger 911 is arranged in the upper air deflector 96, and the upper air deflector 96 is communicated with the dust discharging channel through the upper dust discharging auger 911.
As shown in fig. 12, the upper partition plate 97 is connected with an upper connecting plate 931, the upper connecting plate 931 is arranged obliquely downwards, a connecting air duct 932 is formed between the upper connecting plate 931 and the upper air deflector 96, an intermediate air adjusting device is arranged in the connecting air duct 932, the intermediate air adjusting device comprises an intermediate rotating shaft 933, an air adjusting frame 938, an intermediate adjusting plate 934, an intermediate adjusting rod 935, a connecting rod 936 and an intermediate screw 937, the intermediate rotating shaft 933 is installed in the connecting air duct 932 in a penetrating manner and rotates relative to the connecting air duct 932, the intermediate rotating shaft 933 is provided with an air adjusting frame 938, the air adjusting frame 938 is fan-shaped in section, the intermediate rotating shaft 933 is connected with the intermediate adjusting plate 934, the intermediate adjusting rod 935 is connected with the intermediate adjusting rod 935, the lower end of the intermediate adjusting rod 935 is hinged with the upper end of the connecting rod 936, the lower end of the connecting rod 936 is hinged with the upper end of the intermediate screw 937, and the intermediate screw 937 is installed in the adjusting frame 929 in a penetrating manner. Through middle adjusting device, adjust the size of connecting the wind channel and open, when dust and light thin impurity are more in the grain material, through opening the connecting wind channel, make upper exhaust channel and lower floor's exhaust channel communicate when not passing through the feed channel to take away the whole or part of lower floor's exhaust channel internal air current, place dust and light thin impurity in the air current in the lower floor's exhaust channel and cause secondary pollution to the grain in the feed channel.
As shown in fig. 11, an air inlet adjusting device is disposed in an air inlet pipe 91, the air inlet adjusting device includes an upper partition 912, an upper adjusting shaft 913, an upper adjusting plate 914, an upper adjusting screw 915, an upper adjusting seat 916, a lower adjusting plate 917, an adjusting chute 918, an adjusting push rod 919, a lower adjusting shaft 920 and a lower adjusting jack screw 921, the upper partition 912 is vertically disposed on the upper portion of the air inlet pipe 91, the upper adjusting shaft 913 is disposed in the air inlet pipe 91 under the upper partition 912 in a penetrating manner, the upper adjusting plate 914 is hinged to the upper adjusting shaft 913, the upper adjusting plate 914 is connected with an upper adjusting seat 916, threads in the upper adjusting seat 916 are connected with an upper adjusting screw 915, the upper adjusting screw 915 is connected with the air inlet pipe 91 through a bearing, one end of the upper adjusting screw 915 located outside the air inlet pipe 91 is provided with an upper adjusting hand wheel 922, the lower adjusting chute 918 is vertically disposed in the air inlet pipe 91, the adjusting chute 918 is disposed in the upper end of the lower adjusting plate 917 in a penetrating manner, the upper adjusting shaft is hinged to the lower adjusting hand wheel 921, the upper adjusting screw is connected with the lower adjusting knob 921, the upper adjusting screw is arranged in the upper adjusting screw is connected with the lower adjusting knob 91, and the lower adjusting screw is hinged to the upper end of the upper adjusting knob 921, and the lower adjusting screw is connected with the upper adjusting knob is located at the lower end of the upper adjusting knob through a sliding seat, and the upper end of the upper adjusting knob is positioned opposite to the lower adjusting knob, and the lower adjusting knob is positioned at the lower end of the upper adjusting knob, and the upper adjusting knob is positioned opposite to the lower adjusting knob, and the lower adjusting knob is.
As shown in fig. 12, an exhaust adjusting device is disposed in the exhaust port 95, the exhaust adjusting device includes an air adjusting plate 924, an air adjusting shaft 925, a connecting plate 926, an upper pull rod 927, a middle connecting rod 928, an adjusting frame 929 and a lower screw 930, the adjusting frame 929 is disposed at one side of the frame 1, the air adjusting shaft 925 is installed in the exhaust port 95 in a penetrating manner and can rotate relative to the exhaust port 95, the air adjusting shaft 925 is provided with the air adjusting plate 924 and the connecting plate 926, the connecting plate 926 is connected with the upper portion of the upper pull rod 927, the lower end of the upper pull rod 927 is hinged with the upper end of the middle connecting rod 928, the lower end of the middle connecting rod 928 is hinged with the upper end of the lower screw 930, the lower screw 930 is installed in the adjusting frame 929 in a penetrating manner and is in threaded connection with the adjusting frame 929, and the lower end of the lower screw 930 is provided with the air adjusting plate.
The air inlet pipe 91 and the air suction opening 95 are changed in size of the ventilation section, so that the air quantity is adjusted, and the air inlet adjusting device and the air suction adjusting device are matched with each other, so that the air quantity is adjusted in real time according to the dust and light and fine impurities in the grain materials under the condition that the power of the air suction fan is unchanged.
When in use, the motor 41 is started, and the motor 41 drives the hanging frame 2 to do plane rotation through belt transmission, so as to drive the screen body 3 to do plane rotation. Grain materials enter from a feed port 82, a plurality of feed ports 82 can be arranged at the upper end of a feed shell 81 of the invention, the materials entering from the feed ports 82 enter a lower feed channel 88 along an upper feed channel 87, then flow out from two discharge ports from the lower feed channel 88, enter a feed hopper 59 on two sieve boxes 5 respectively, enter a uniform distributor 6 from the feed hopper 59, then enter upper sieve grids 54 in three sieving chambers 53 from six blanking channels 64 respectively, are screened by the upper sieve grids 54 under the plane back-conveying action of a sieve body 3, small impurities such as clean grains, small particles and dust fall onto the lower sieve grids 55 from the sieve holes of the upper sieve grids 54, the impurities with larger particles enter a large impurity discharging bin 79 in a discharging chamber 78 of a discharger 7 along the upper sieve grids 54, are discharged from the large impurity tube 716, the clean grains and the impurities enter the lower sieve grids 55 are screened by the lower sieve grids 55 respectively, the clean grains enter the lower sieve grids 55 along the lower sieve grids 55, the clean grains enter the discharging chamber 78 of the lower sieve boxes 7, the clean grains and the impurities fall into the small impurity bin 74 from the small impurity boxes 72 along the lower sieve grids 72, the small impurity impurities and the impurities enter the small impurity bin 716 and the small impurity bin 72 in the small impurity discharging chamber 7 along the small impurity boxes 72.
The air inlet pipe 91 is communicated with the grain cleaning outlet 715 at the lower end of the grain discharging frame 72, dust and light impurities in the grain cleaning are pumped away under the action of an exhaust fan, flow upwards along the air inlet pipe 91, and enter the lower air deflector 99 of the lower air suction channel 92 after passing through the holes between the upper partition 97 and the lower partition 98, the cross section of the lower air deflector 99 is V-shaped, the space is increased, the pressure of the air flow is reduced, the flow speed is reduced, the light impurities such as dust in the air flow are settled and discharged by the lower dust discharging auger 910, the air flow continuously flows, part of the dust and light impurities in the grain materials are taken away by the air flow when passing through the grain materials between the upper feed channel 87 and the lower feed channel 88, then part of the dust and light impurities in the grain materials are taken away again when passing through the grain materials between the upper feed channel 87 and the feed inlet 82, the air flow enters the upper air deflector 96, the cross section of the upper air deflector 96 is V-shaped, the space is increased, the pressure of the air flow is reduced again, the pressure of the air flow is reduced, the dust in the air flow is reduced, the dust is discharged by the upper dust discharging auger, and the dust is settled down, and the dust in the upper dust discharging auger is discharged.
An air inlet adjusting device is arranged in the air inlet pipe 91, an upper adjusting screw 915 is rotated by operating an upper adjusting hand wheel 922, and then the upper adjusting seat 916 moves along the upper adjusting screw 915, so that the upper adjusting plate 914 is pushed to swing relative to the upper adjusting rotating shaft 913, the angle of the upper adjusting plate 914 is adjusted, the sectional area of an air inlet channel of the air inlet pipe 91 is controlled, and the running amount is adjusted. The lower adjusting handwheel 923 is operated to rotate the lower adjusting spindle 920 relative to the air inlet pipe 91, so that the adjusting push rod 919 moves up and down relative to the adjusting chute 918, thereby pushing the lower adjusting plate 917 to swing around the hinge shaft of the lower adjusting plate 917 and the upper adjusting plate 914, and adjusting the cross-sectional area of the air inlet channel at the lower part of the air inlet pipe 91 through the lower adjusting plate 917, thereby adjusting the air inlet amount. When in actual use, the air inlet quantity can be adjusted according to the quantity of dust in the grain materials.
The air suction opening 95 is internally provided with an air suction adjusting device, the lower screw 930 is rotated by rotating the air adjusting wheel, the connecting plate 926 is pulled to swing by the middle connecting rod 928 and the upper pull rod 927, the air adjusting rotating shaft 925 is driven to rotate, the air adjusting plate 924 on the air adjusting rotating shaft 925 is driven to rotate, the cross section area of the air suction opening 95 is adjusted by adjusting the angle of the air adjusting plate 924, the purpose of adjusting the air quantity is achieved, when the air adjusting plate 924 is vertically arranged, the air suction opening 95 is sealed, and when the air adjusting plate 924 is horizontally arranged, the air quantity is maximum.
The upper partition plate 97 of the invention is connected with the upper connecting plate 931, the upper connecting plate 931 is arranged obliquely downwards, a connecting air channel 932 is formed between the upper connecting plate 931 and the upper air deflector 96, a middle air regulating device is arranged in the connecting air channel 932, a middle screw rod 937 is rotated through a middle hand wheel, under the action of the middle regulating rod 935 and a connecting rod 936, the middle regulating plate 934 is pulled to rotate, thereby a middle rotating shaft 933 is driven to rotate, a regulating frame 938 is driven to rotate, the regulating frame 938 is fan-shaped, the sealing or opening of the connecting air channel 932 can be realized by changing the angle of the regulating frame 938, when the dust amount in grains is large, the connecting air channel can be opened, air flow can directly enter between the upper partition plate 97 and the feeding shell 81 from the connecting air channel 932 without passing through grain materials, and is extracted from the air suction opening 95.
According to the invention, the discharging adjusting device is arranged at the lower opening of the upper-layer feeding channel 87, and the distance between the adjusting pull rod 814 and the lower adjusting screw 815 is adjusted by rotating the adjusting screw sleeve 816, so that the adjusting plate 813 rotates relative to the adjusting rotating shaft 812, the distance between the adjusting plate 813 and the upper-layer sliding plate 84 is adjusted, and the opening size of the lower opening of the upper-layer feeding channel 87 is adjusted, so that the grain material discharging amount is adjusted.
The upper-layer feeding channel 87 is internally provided with a refining device, and the refining motor drives the refining rotating shaft 89 to rotate, so that the refining cam 810 rotates, the refining plate 811 swings back and forth, and grain materials falling from the upper-layer feeding channel 87 are spread out under the action of the refining plate 811, so that the aim of uniform blanking is fulfilled.
It should be noted that the above-mentioned embodiments illustrate rather than limit the technical solution of the present invention, and that those skilled in the art may substitute equivalents or other modifications made according to the prior art, without departing from the spirit and scope of the technical solution of the present invention, and are included in the scope of the claims.
Claims (6)
1. The utility model provides a doublestage gyration combination formula multilayer sieve which characterized in that: including frame (1), gallows (2), screen frame (3), convulsions feed system and power transmission system (4), screen frame (3) set up on gallows (2), gallows (2) on be provided with the lifter, the lifter upper end is articulated with frame (1) ball, the lower extreme of lifter and gallows (2) ball hinge, power transmission system (4) set up at gallows (2) lower extreme, power transmission system (4) drive gallows (2) and screen frame (3) and do plane gyration motion, screen frame (3) including two screen boxes (5), two screen boxes (5) all include box (51), baffle (52), even distributor (6) and discharger (7) with the same structure of screen box (5), box (51) be the frame structure of both sides opening, its one side sets up even distributor (6), its opposite side set up distributor (7), box (51) in be provided with two baffles (52) along its direction of height, two baffles (52) drive gallows (2) and screen boxes (53) set up in the screen box (53) and screen grid (53) in the screen box (53), the holes of the lower screen lattice (55) are smaller than the holes of the upper screen lattice (54), the upper screen lattice (54) and the lower screen lattice (55) divide the screening cavity (53) into a big impurity cavity (56), a grain cleaning cavity (57) and a small impurity cavity (58), a feeding hopper (59) is arranged on the box body (51), the feeding hopper (59) is communicated with an air draft feeding system and a uniform distributor (6), the air draft feeding system is arranged at the top end of the frame (1), the uniform distributor (6) uniformly distributes materials to the upper screen lattices (54) in the three screening cavities (53), the discharging device (7) respectively outputs the screened big impurities, the screened grain cleaning impurities and the screened small impurities,
The discharger (7) comprises a discharging frame body (71), a discharging frame body (72), a big impurity pipe (73), a small impurity pipe (74), a big impurity baffle (75), a small impurity baffle (76) and a discharging plate (77), one side of the discharging frame body (71) is hinged with a box body (51) of a screen box (5), the other side of the discharging frame body (71) is tightly pressed with the screen box (5) through a pressing device, two small impurity baffles (76) are arranged in the discharging frame body (71), two small impurity baffles (76) correspond to the baffle (52) in the box body (51) of the screen box (5), the discharging frame body (71) is divided into three discharging cavities (78) by the two small impurity baffles (76), the discharging cavities (78) are provided with the big impurity baffle (75) and the discharging plate (77) from top to bottom, the big impurity baffle (75) corresponds to an upper screen grid (54) in the box body (51), the discharging plate (77) corresponds to a lower screen grid (55) in the box body (51), the two small impurity baffles (76) correspond to the big impurity baffle (75) and the discharging cavities (75) are divided into the big impurity baffles (75) and the discharging cavities (73) and the discharging cavities (79) are arranged in the discharging cavities (79) from top to bottom, big miscellaneous baffle (75) on be provided with big miscellaneous export (712), big miscellaneous feed bin (79) are through big miscellaneous export (712) intercommunication big miscellaneous pipe (73), little miscellaneous baffle (76) on be provided with little miscellaneous export (713), little miscellaneous feed bin (711) through little miscellaneous export (713) intercommunication little miscellaneous pipe (74), the outside of ejection of compact framework (71) be provided with out grain framework (72), ejection of compact framework (71) on be provided with out grain mouth (714), out grain mouth (714) intercommunication play grain bin (710) and out grain framework (72), out grain framework (72) lower extreme set up clean grain export (715), all be provided with guide plate (716) in big miscellaneous feed bin (79), in play grain bin (710) and the little miscellaneous feed bin (711), guide plate (716) in big miscellaneous feed bin (79) by one side to big miscellaneous export (712), the slope of grain bin (710) in the guide plate (716) to grain bin (716) in the slope of grain bin (710) is by little miscellaneous feed bin (716).
2. The dual stage rotary combined multi-deck screen of claim 1, wherein: the utility model provides a evenly dosing device (6) include batching framework (61), batching baffle (62), flitch (63) down, batching framework (61) upper end opening, be provided with a plurality of batching baffles (62) in batching framework (61), a plurality of batching baffles (62) cut apart batching framework (61) inner chamber into a plurality of vertical unloading passageway (64), the medial surface of batching framework (61) on be provided with a plurality of batching mouthful (65), the upper end opening of batching framework (61) is passed through unloading passageway (64) intercommunication batching framework (61), the upper end opening of batching framework (61) intercommunication feeder hopper (59), batching mouthful (65) in be provided with flitch (63), flitch (63) seal batching passageway (64) below batching mouthful (65), a plurality of batching mouthful (65) cut apart last screen (54) in the different screening chamber (53), one side of batching framework (61) and box (5) articulated with box (51) of box (5) put through pressing tightly.
3. The dual stage rotary combined multi-deck screen of claim 2, wherein: the compressing device comprises a compressing seat (66) fixed between two screen boxes (5), a compressing screw (67) is hinged to the compressing seat (66), one end of the compressing screw (67) is hinged to the compressing seat (66), a compressing nut (68) is arranged at the other end of the compressing screw (67), the compressing screw (67) is arranged between the two screen boxes (5), and the compressing screw (67) is arranged in a penetrating mode in a compressing plate (69).
4. The dual stage rotary combined multi-deck screen of claim 1, wherein: the power transmission system (4) comprises a motor (41), a driving belt wheel (42), a driven belt wheel (43), a rotating shaft (44) and a transmission bottom plate, wherein the transmission bottom plate is arranged at the lower end of the hanging frame (2), the rotating shaft (44) is provided with the driven belt wheel (43), the motor (41) is arranged on the hanging frame (2), the driving belt wheel (42) is arranged on a main shaft of the motor (41), and the driving belt wheel (42) is connected with the driven belt wheel (43) through a transmission belt.
5. The dual stage rotary combined multi-deck screen of claim 1, wherein: the air draft feeding system comprises a feeding system (8) and an air draft system (9), the feeding system (8) is fixed on a feeding shell (81) at the top end of a frame (1), a feeding inlet (82) is formed in the feeding shell (81), an upper layer material guide plate (83), an upper layer material guide plate (84), a lower layer material guide plate (85) and a lower layer baffle (86) are arranged in the feeding shell (81), two ends of the upper layer material guide plate (84) and two ends of the upper layer material guide plate (83) are fixedly connected with the feeding shell (81), the upper layer material guide plate (84) and the upper layer material guide plate (83) form an upper layer feeding channel (87) with a cross section in a hopper shape, gaps are formed between the upper layer material guide plate (83) and the upper layer material guide plate (84) and the feeding shell (81), two ends of the lower layer material guide plate (85) and two ends of the lower layer baffle (86) are fixed with the feeding shell (81), the lower layer material guide plate (85) and the lower layer material guide plate (86) form the gap between the upper layer material guide plate (84) and the upper layer material guide plate (82) with the upper layer material guide plate (82) in a gap shape, the lower extreme opening of upper feed channel (87) corresponds the upper end opening of lower floor's feed channel (88), the lower extreme of lower floor's feed channel (88) set up two discharge gates, two discharge gates connect feeder hopper (59) on two sieve boxes (5) respectively, upper feed channel (87) in be provided with refining device, the lower extreme department of upper feed channel (87) be provided with ejection of compact adjusting device.
6. The dual stage rotary combined multi-deck screen of claim 5, wherein: the air draft system (9) comprises an air inlet pipe (91), a lower layer air draft channel (92), a reversing air flue (93), an upper layer air draft channel (94) and an air draft opening (95), wherein the air inlet pipe (91) is arranged on one side of a discharger (7) of a screen body (3), a lower end opening of the air inlet pipe (91) is communicated with a grain purifying outlet of the discharger (7), the lower layer air draft channel (92), the reversing air flue (93) and the upper layer air draft channel (94) are arranged in a feeding shell (81), the air draft opening (95) is arranged on one side of the feeding shell (81), an upper layer air draft plate (96), an upper layer partition plate (97), a lower partition plate (98) and a lower layer air draft plate (99) are arranged in the feeding shell (81), the upper layer air draft plate (96) is connected with the upper partition plate (97), an upper layer air draft channel (94) is formed between the upper layer air draft plate (96) and a top plate of the feeding shell (81), the lower layer air draft plate (98) and the lower layer air draft plate (98) are connected with the lower layer air draft plate (99), a reversing air duct (93) is formed between an upper layer material guide plate (83) and a lower layer baffle plate (86) in the feeding shell (81), an upper layer air suction channel (94) is communicated with an air suction opening (95) in the shell, a lower layer air suction channel (92) is communicated with an air inlet pipe (91) arranged on the frame (1), and the lower layer air suction channel (92) is communicated with the upper layer air suction channel (94) through the reversing air duct (93).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810722871.2A CN108620330B (en) | 2018-07-04 | 2018-07-04 | Double-stage rotary combined multi-layer screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810722871.2A CN108620330B (en) | 2018-07-04 | 2018-07-04 | Double-stage rotary combined multi-layer screen |
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| CN108620330B true CN108620330B (en) | 2024-06-11 |
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| CN110404756B (en) * | 2019-08-14 | 2022-06-10 | 郑州兆丰粮油机械有限公司 | Screening classification equipment with high yield and easy maintenance |
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| CN108620330A (en) | 2018-10-09 |
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Country or region after: China Address after: No. 52, Lianhua street, Zhengzhou high tech Zone, Henan Province Applicant after: COFCO RESEARCH & ENGINEERING (ZHENGZHOU) CO.,LTD. Applicant after: COFCO engineering Maosheng equipment (Henan) Co.,Ltd. Address before: No. 153 Nanyang Road, Huiji District, Zhengzhou City, Henan Province, 450000 Applicant before: COFCO RESEARCH & ENGINEERING (ZHENGZHOU) CO.,LTD. Country or region before: China Applicant before: COFCO engineering Maosheng equipment (Henan) Co.,Ltd. |
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