CN114669478A

CN114669478A - Wind screen roller combination formula seed cleaning device

Info

Publication number: CN114669478A
Application number: CN202210357295.2A
Authority: CN
Inventors: 王升升; 卢梦晴; 刘星弈; 王园珂; 寇新园; 周浩; 解晓琳
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-28
Anticipated expiration: 2042-04-02
Also published as: CN114669478B

Abstract

The invention relates to a wind screen roller combined seed cleaning device. The automatic impurity-absorbing cleaning machine comprises a frame, a feeding port, a vibration cleaning sieve, an impurity-absorbing fan and an acceleration roller cleaning room, wherein a first impurity-absorbing port corresponding to the vibration cleaning sieve downwards is arranged at the bottom of a shell of the impurity-absorbing fan, a first negative-pressure suction area is formed above a sieve surface of the vibration cleaning sieve, the acceleration roller cleaning room is arranged below the vibration cleaning sieve, a second impurity-absorbing port is relatively arranged on the side wall of the cleaning room of the acceleration roller cleaning room, a second negative-pressure suction area which sucks towards the lateral direction is formed inside the acceleration roller cleaning room, and when the automatic impurity-absorbing cleaning machine is used, most impurities separated by the vibration cleaning sieve are sucked by the first negative-pressure suction area, the acceleration roller accelerates seeds and few impurities which penetrate through a cleaning sieve pore to fall, and impurities in the cleaning room are sucked by the second negative-pressure suction area. The wind screen roller combined seed cleaning device provided by the invention is integrated, so that the cleaning efficiency and the cleaning effect are improved while the size of the cleaning device is reduced.

Description

Wind screen roller combination formula seed cleaning device

Technical Field

The invention relates to the field of agricultural machinery equipment for seed cleaning, in particular to a wind screen roller combined type seed cleaning device.

Background

With the development of agricultural mechanization, in order to realize the cleaning of seeds, a traditional air screen type cleaning system is generally adopted, but for light and foreign matters such as inner membranes, broken hulls and stem chips mixed in the seeds, which are bonded on the seeds, the cleaning system is difficult to realize effective separation and cleaning, so that the impurity content of the cleaned seeds is high, and the cleaning requirement cannot be met.

In order to solve the problem, the prior cleaning system is additionally provided with a bonded sundry separating mechanism in the cleaning process to separate seeds and bonded sundries, for example, the prior cleaning system disclosed in the Chinese patent with the application publication number of CN109013339A comprises a primary cleaning device and a secondary cleaning device, wherein the primary cleaning device comprises a vibration cleaning sieve, a tail sieve and a second fan, the vibration cleaning sieve primarily separates and filters the seeds and the sundries by vibration, the primarily filtered seeds are conveyed to the tail sieve by a chute, the tail sieve filters the seeds again, the filtered seeds fall into the secondary cleaning device below the tail sieve, the second fan primarily separates the fallen seeds by winnowing and blows out light sundries, the secondary cleaning device comprises a kneading acceleration separating area and a first fan, the kneading acceleration separating area utilizes a roller to knead and accelerate the seeds so as to separate the seeds and the bonded sundries, the first fan blows out the sundries to clean the seeds.

However, the cleaning device is complex, occupies a large volume, has high grain loss rate in the screening process of small-particle seeds, and is difficult to collect screened impurities which are easy to mix with the seeds again, so that the cleaning efficiency is still low.

Disclosure of Invention

The invention aims to provide a wind screen roller combined type seed cleaning device, which is used for solving the problems of low cleaning efficiency and large occupied volume of the existing seed cleaning device.

In order to realize the purpose, the air screen roller combined seed cleaning device adopts the following technical scheme: the impurity suction device comprises a rack, a feeding port, a vibrating cleaning sieve, an impurity suction fan and an accelerating roller cleaning chamber, wherein the accelerating roller cleaning chamber comprises a cleaning box and a plurality of accelerating rollers, a feeding port is formed in the top of the cleaning box, the accelerating rollers are horizontally arranged below the feeding port, the impurity suction fan comprises a shell, a first impurity suction port facing the sieve surface of the vibrating cleaning sieve is formed in the bottom of the shell, the first impurity suction port forms a first negative pressure suction area on the sieve surface of the vibrating cleaning sieve, and the feeding port is arranged below the vibrating cleaning sieve and upwards corresponds to the first impurity suction port; a second impurity suction port is arranged on the side wall of the cleaning box and is positioned below the accelerating rollers so as to form a second negative pressure suction area which sucks towards the lateral direction in the cleaning box;

when the seed cleaning box is used, the first negative pressure suction area is used for sucking sundries separated by the vibration cleaning sieve, the accelerating roller is used for separating seeds and residual sundries which penetrate through sieve pores of the vibration cleaning sieve and fall, the falling speed of the seeds and the sundries is accelerated, and the second negative pressure suction area is used for sucking the sundries in the cleaning box.

The beneficial effects are that: the impurity suction fan, the vibration cleaning sieve and the acceleration roller cleaning chamber are sequentially arranged from top to bottom, a first impurity suction port of the impurity suction fan forms a first negative pressure suction area on the vibration cleaning sieve, the effect of slowing down the falling speed of seeds and impurities can be achieved while the impurities screened out on the vibration cleaning sieve are sucked, the detention time of the seeds and the impurities at the vibration cleaning sieve is prolonged to a certain extent, and the cleaning effect of the vibration cleaning sieve on the seeds is improved; in addition, due to the difference of density, size and aerodynamic characteristics between the seeds and the sundries, the deceleration effect of negative pressure suction on the sundries is more obvious, the acceleration effect of the acceleration roller is more obvious, the two effects are accumulated, the separation and layering effects of the seeds and the sundries are greatly improved, and the cleaning effect is further improved to the maximum extent; and the impurity suction fan, the vibration cleaning sieve and the acceleration roller cleaning chamber are sequentially arranged from top to bottom, so that the falling process of seeds and impurities is ingeniously utilized, the conveying device is saved, and the occupied volume of the device is reduced.

Preferably, the housing of the impurity suction fan is provided with an auxiliary impurity suction channel, and the auxiliary impurity suction channel is communicated with the second impurity suction port to provide suction negative pressure for the second impurity suction port.

The beneficial effects are that: the impurity suction fan is used for providing suction negative pressure for the vibration cleaning sieve and the acceleration roller cleaning chamber at the same time, so that impurities cleaned by the cleaning device are discharged from an impurity outlet of the same impurity suction fan, and the cleaned impurities are convenient to collect; meanwhile, the design of one machine with two purposes reduces the fan arrangement required by the cleaning device, and reduces the whole volume of the cleaning device.

Furthermore, two second impurity suction ports are arranged on the opposite side walls of the cleaning box respectively.

The beneficial effects are that: two second gettering mouths set up respectively on the relative lateral wall of cleaning the case, can realize cleaning the even, high-efficient suction of debris in the case, improve cleaning efficiency.

Furthermore, the axis direction of the accelerating rollers is defined to be the front-back direction, the arrangement direction of the accelerating rollers is the left-right direction, and the two second impurity suction ports are oppositely arranged on the side walls of the cleaning boxes on the left side and the right side of the accelerating rollers, so that stable negative pressure airflow is provided for the cleaning boxes, and the seeds and impurities are better separated.

The beneficial effects are that: the second impurity suction ports are arranged on the side walls of the cleaning boxes on two sides of the accelerating roller in the arrangement direction, so that interference between the second impurity suction ports and the auxiliary impurity suction channels and the transmission structure of the accelerating roller can be avoided, and the structure is more reasonable.

Preferably, the bottom of the shell of the impurity suction fan is provided with an air inlet, the air inlet comprises a main impurity suction area and an auxiliary impurity suction area, the main impurity suction area forms a first impurity suction port, the auxiliary impurity suction area is communicated with a second impurity suction port through an auxiliary impurity suction channel, the auxiliary impurity suction channel comprises an upper cylinder body and a lower cylinder body which are mutually communicated, the lower end of the upper cylinder body is fixedly connected with the upper end of the lower cylinder body, the axial direction of the accelerating rollers is defined as the front-back direction, the arrangement direction of the accelerating rollers is the left-right direction, the upper cylinder body extends towards the direction far away from the impurity suction fan from the left-right direction from top to bottom, and the lower cylinder body extends towards the direction close to the cleaning box from the left-right direction from top to bottom, so that a bending structure is formed in the middle of the auxiliary impurity suction channel to avoid the vibration cleaning sieve.

The beneficial effects are that: the upper barrel and the lower barrel of the auxiliary impurity absorbing channel are inclined and extended, and a bending structure is formed in the middle of the auxiliary impurity absorbing channel, so that the cleaning effect is guaranteed, the interference of the vibration cleaning sieve is avoided, and the size of the device is effectively reduced.

Furthermore, a movable air door is arranged in the air inlet, the movable air door separates the air inlet to form a main impurity suction area and an auxiliary impurity suction area, and the movable air door can be freely adjusted to change the ventilation volume of the first impurity suction port and the second impurity suction port.

The beneficial effects are that: the movable air door capable of being freely adjusted is arranged in the air inlet of the impurity suction fan, and the impurity suction ports are separated to form a main impurity suction area and an auxiliary impurity suction area, so that an operator can adjust the movable air door according to actual conditions, suction negative pressure at the two impurity suction ports is reasonably distributed, energy waste and seed loss are reduced, and cleaning efficiency is improved.

Preferably, the feeding port and the impurity suction fan are horizontally arranged above the vibration cleaning sieve along the front-back direction, the feeding port is located at the front side of the impurity suction fan, the main impurity suction area and the auxiliary impurity suction area are arranged in an air inlet of the impurity suction fan along the front-back direction, guide plates are arranged on the front side and the back side of the bottom of a shell of the impurity suction fan respectively, the guide plates on the front side are arranged in a forward inclined mode, the guide plates on the back side are arranged in a backward inclined mode to form flaring structures in the front-back direction, and the first negative pressure suction area covers the whole vibration cleaning sieve.

The beneficial effects are that: through the setting of the flaring structure of guide plate, enlarged the suction scope in the first negative pressure suction district that first suction mouth formed, guaranteed that first negative pressure suction district can cover whole vibration cleaning sieve, avoid setting up of feed inlet to influence the cleaning of gettering fan to feed inlet below seed, guaranteed to clean the effect.

Preferably, the structure of the auxiliary impurity suction channel communicated with the second impurity suction port is a flaring structure, and the radial sectional area of the flaring structure is gradually increased towards the interior of the cleaning box so as to enlarge the coverage area of the second negative pressure suction area.

The beneficial effects are that: through setting up the structure of second gettering mouth department into the flaring structure, increased the suction scope in second negative pressure suction district, guaranteed that the second is inhaled the miscellaneous mouthful and to the comprehensive, even, high-efficient suction of debris in the roller cleaning room with higher speed, improved cleaning efficiency and cleaning effect.

Preferably, the impurity outlet of the impurity suction fan faces to the direction away from the feeding port.

The beneficial effects are that: the impurity outlet direction of the impurity outlet deviates from the feeding opening, so that impurities discharged from the impurity outlet are prevented from being mixed into the feeding opening to pollute seeds, and the cleaning effect is ensured.

Preferably, the seed cleaning and sorting device further comprises a seed collecting box and a sundries box, wherein a seed outlet is formed in the bottom of the accelerating roller cleaning and sorting chamber, the seed collecting box is movably arranged below the seed outlet and used for collecting cleaned seeds, and the sundries box is arranged at a sundries outlet of the impurity suction fan and used for collecting cleaned sundries.

The beneficial effects are that: the seed collecting box is arranged to collect the cleaned seeds, so that the influence on the normal operation of the cleaning box of the cleaning chamber of the accelerating roller caused by excessive seed accumulation in the cleaning box of the cleaning chamber of the accelerating roller is prevented, and the cleaned seeds are prevented from being polluted again by sundries; set up the debris that the debris case was collected and was cleaned out, be convenient for retrieve remaining seed in the debris, reduce the attrition rate of seed, avoid debris to mix once more with the seed simultaneously and cause the pollution, guarantee to clean efficiency.

Drawings

FIG. 1 is a schematic perspective view of the wind screen roller combination type seed cleaning device of the present invention;

FIG. 2 is a schematic perspective view of a gettering fan of the present invention;

FIG. 3 is a schematic view of the construction of an accelerating roller of the present invention;

fig. 4 is a schematic view of the working state of the acceleration roller cleaning chamber of the present invention.

In the figure: 1. a gettering fan; 2. a frame; 3. a secondary gettering channel; 4. a glove box; 5. a seed collecting box; 6. an acceleration roller cleaning chamber; 7. a motor; 8. a transmission belt; 9. vibrating and screening; 10. a feed inlet; 11. a sundry outlet; 12. an impeller; 13. a baffle; 14. a second impurity suction port; 15. a first impurity suction port; 16. a housing; 17. a roller; 18. a main acceleration roller shaft; 19. a transmission gear; 20. sundries; 21. seeds; 22. a guide plate; 23. a movable air door; 24. a cleaning box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …," or the like, does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The invention relates to a specific embodiment of a wind screen roller combined type seed cleaning device, which comprises the following steps: as shown in fig. 1, the combined type seed 21 cleaning device with the wind screen roller mainly comprises a frame 2 and a feeding port 10 installed on the frame 2, a gettering fan 1, a vibration cleaning screen 9, an acceleration roller cleaning chamber 6, a seed collecting box 5 and a sundries box 4, wherein the feeding port 10 and the gettering fan 1 are horizontally installed on the upper portion of the frame 2 in parallel, the motor 7 drives the gettering fan 1 to work through a driving belt 8, the vibration cleaning screen 9 is arranged in the middle of the frame 2 and corresponds to the lower portion of the feeding port 10 and the gettering fan 1, the acceleration roller cleaning chamber 6 is correspondingly arranged below the vibration cleaning screen 9, and the seed collecting box 5 and the sundries box 4 are arranged at the bottom of the frame 2.

In order to more intuitively express the embodiment of the present invention, description is made with reference to fig. 2 to 4.

As shown in fig. 3 and 4, the accelerating roller cleaning chamber 6 comprises a cleaning box 24 and a plurality of accelerating rollers horizontally arranged in parallel, a feeding port is arranged at the top of the cleaning box 24 and used for receiving seeds 21 cleaned by the vibrating cleaning sieve 9 and impurities 20 not cleaned, the accelerating rollers comprise rollers 17, accelerating roller shafts and transmission gears 19, the rollers 17 of the accelerating rollers are horizontally arranged below the feeding port, the end parts of the accelerating rollers are respectively provided with the transmission gears 19, the accelerating rollers are mutually meshed and driven through the transmission gears 19, the accelerating roller shaft of the accelerating roller at the most edge is the main accelerating roller shaft 18, one end of the main accelerating roller shaft 18 is provided with a belt wheel which is in transmission connection with a corresponding driving device, the driving device drives the main accelerating roller shaft 18 to rotate, and then drives the rollers 17 of the accelerating rollers to rotate through the transmission gears 19, wherein the roller 17 of adjacent accelerating rollers are opposite in direction, a guide plate 22 is also arranged between the feeding port and the rollers 17, so as to guide the seeds 21 falling from the feed inlet and the impurities 20 which are not cleaned to fall between the rollers 17 which rotate relatively, and ensure that the seeds 21 and the impurities 20 are separated and accelerated by the accelerating rollers.

Further, the axial direction of the accelerating rollers is defined as the front-back direction, the arrangement direction of the accelerating rollers is the left-right direction, two second impurity suction ports 14 are arranged on the side wall of the cleaning box 24 below the rollers 17 of the accelerating rollers, the two second impurity suction ports 14 are oppositely arranged on the left side wall and the right side wall of the cleaning box 24 so as to uniformly suck impurities 20 in the cleaning box 24 from two sides of the cleaning box, and the structure at the second impurity suction ports 14 is a flaring structure with the radial sectional area gradually increasing towards the interior of the cleaning box 24 so as to enlarge the suction range of the second impurity suction ports 14 and enable the second impurity suction ports to effectively suck the impurities 20 in the cleaning box 24.

The specific structure of the impurity-absorbing blower 1 of the embodiment is shown in fig. 2, the impurity-absorbing blower 1 includes a housing 16, an impeller 12, an air inlet, an impurity outlet 11 and an auxiliary impurity-absorbing passage 3, the impeller 12 is disposed in an inner cavity of the housing 16, the impeller provides negative pressure suction force for the impurity-absorbing blower 1 by rotating, the air inlet is disposed at the bottom of the housing 16, a movable air door 23 capable of being freely adjusted is disposed in the air inlet, the movable air door 23 separates the air inlet into a main impurity-absorbing region and an auxiliary impurity-absorbing region which are disposed in front and back, the ventilation volume of the main impurity-absorbing region and the auxiliary impurity-absorbing region can be changed by adjusting the movable air door 23, the impurity outlet 11 is disposed at the top of the impurity-absorbing blower 1, and faces away from the direction of the feed inlet 10, so as to prevent impurities discharged from the impurity outlet 11 from being mixed into the seeds 21 again.

The main impurity absorbing area forms a first impurity absorbing opening 15, the first impurity absorbing opening 15 faces downwards to correspond to the vibrating cleaning sieve 9, a continuous and stable first negative pressure suction area is formed on the sieve surface of the vibrating cleaning sieve 9, and impurities 20 (including all short stalks, fruit pod shells, light impurity residues and the like) in the seeds 21 are discharged through three ways: most of the impurities are screened out by the vibration sorting screen 9, sucked into the impurity suction fan 1 through the first impurity suction port 15 and discharged through the impurity outlet 11 of the impurity suction fan 1; a small part of the impurities 20 with larger particles and heavier particles are discharged through the screen tail under the vibration action of the vibration sorting screen 9; the remaining unpurified impurities 20 fall into the cleaning chamber 6 of the accelerating roller along with the seeds 21, the seeds 21 and the remaining impurities 20 are separated and cleaned in the cleaning box 24, and are discharged from the impurity outlet 11 of the impurity suction fan 1 through the second impurity suction port 14, and finally all the impurities 20 discharged from the impurity outlet 11 and the sieve tail fall into the impurity box 4 below; the auxiliary impurity suction area is respectively communicated with two second impurity suction ports 14 on the left side and the right side of the cleaning box 24 through two auxiliary impurity suction channels 3, the upper ends of the two auxiliary impurity suction channels 3 are fixedly connected with a shell 16 of the impurity suction fan 1, the auxiliary impurity suction channels are specifically connected to the rear portion of the air inlet (namely the auxiliary impurity suction area), the lower ends of the auxiliary impurity suction channels 3 are fixedly connected with the cleaning box 24, the impurity suction fan 1 is enabled to provide suction negative pressure for the second impurity suction ports 14 through the auxiliary impurity suction channels 3, and a second negative pressure suction area which sucks towards the lateral direction is formed inside the cleaning box 24. The auxiliary impurity suction channel 3 comprises an upper cylinder body and a lower cylinder body which are communicated with each other, the lower end of the upper cylinder body is fixedly connected with the upper end of the lower cylinder body, the upper cylinder body is extended towards the direction away from the impurity suction fan 1 in the left-right direction from top to bottom, the lower cylinder body is extended towards the direction close to the cleaning box 24 in the left-right direction from top to bottom, so that a bending structure is formed in the middle of the auxiliary impurity suction channel 3, the bending structure can avoid the vibration cleaning sieve 9, and the integration setting of the device is facilitated.

Both sides all are provided with guide plate 13 around lieing in the air intake on casing 16, the guide plate 13 top-down of front side slopes to set up forward, the guide plate 13 top-down of rear side slopes to set up backward, flaring structure on the fore-and-aft direction has been formed at casing 16 bottom, in order to enlarge the coverage in first negative pressure suction district, reserve sufficient space for the setting in feed inlet 10 and the vice miscellaneous region of inhaling, make the negative pressure suction district can effectively aspirate the screen surface of whole vibration cleaning sieve 9, avoid all the other structural arrangements to influence the suction effect of inhaling miscellaneous fan 1.

In addition, the bottom of roller cleaning room 6 is equipped with out the mouth with higher speed, and seed collecting box 5 corresponds the setting in out the mouth below for collect the seed 21 after cleaning, debris case 4 corresponds the setting in the play miscellaneous mouthful 11 below of gettering fan 1, and is located the sieve tail one end of vibration cleaning sieve 9, is used for collecting the debris of cleaning out, separates debris and clean seed 21 and deposits, in order to avoid its mixed influence to clean efficiency and cleaning effect.

The use process of the wind screen roller combined seed cleaning device of the above embodiment is explained by referring to fig. 1, when cleaning seeds 21, the seeds 21 to be cleaned are poured in from the feeding opening 10, the seeds 21 and the impurities are layered and filtered by the reciprocating vibration of the vibrating cleaning screen 9, most of the impurities (including short stalks, pod shells, light impurities and the like) are pumped out to the impurity box 4 from the first impurity suction opening 15 by matching with the suction effect of the first negative pressure suction area, a small part of the impurities with larger particles and heavier impurities are filtered by the screen surface of the vibrating cleaning screen 9 and are conveyed to the impurity box 4 at the screen tail under the vibration effect, the screened seeds 21 and the remained impurities 20 which are not cleaned fall to the feeding opening of the accelerating roller chamber 6 through the screen holes, the accelerating roller chamber 6 is used for separating the seeds 21 from the remained impurities 20, the seeds 21 are separated from the impurities 20 adhered to the seeds 21 by the accelerating roller, because the size characteristic and the aerodynamic characteristic difference of seed 21 and debris 20, the resistance that debris received is bigger in the whereabouts process, the falling speed is slower, the negative pressure suction of first debris suction opening 15 also can produce more obvious deceleration effect to debris, and the frictional force that roller and seed 21 produced with higher speed is bigger, the effect accumulation to the more obvious three of the acceleration effect of seed, separation and the layering effect of seed 21 with debris 20 have been promoted greatly, finally, remaining debris 20 is taken out to the debris case 4 from second debris suction opening 14 in, clean seed 21 falls into the seed collection box 5 of cleaning box 24 lower part, accomplish whole cleaning process.

According to the air screen roller combined seed cleaning device, the impurity suction fan 1, the vibration cleaning screen 9 and the acceleration roller cleaning chamber 6 are integrated together, so that the suction effect of the impurity suction fan 1, the vibration screening effect of the vibration cleaning screen 9 and the separation acceleration effect of the acceleration roller are mutually promoted, the overall size of the device is reduced, the cleaning efficiency and the cleaning effect are improved, and the cleaning performance and the practicability of the cleaning device are greatly improved.

Of course, the wind screen roller combined seed cleaning device of the invention is not limited to the above-described embodiments, and this document also provides several other embodiments of the wind screen roller combined seed cleaning device based on the design concept of the invention, specifically as follows:

in other embodiments of the wind screen roller combined seed cleaning device, the difference from the above embodiments is that: the gettering fan can also be arranged at other positions on the frame, for example, the gettering fan is arranged at the side surface of the vibration cleaning sieve, the first gettering port is still correspondingly arranged above the vibration cleaning sieve, and the main gettering area of the gettering fan is communicated with the first gettering port through the gettering passage to provide suction negative pressure for the first negative pressure suction area.

In other embodiments of the wind screen roller combined seed cleaning device, the difference from the above embodiments is that: the second impurity suction port can be only arranged, correspondingly, the second impurity suction port can also be arranged on the front side wall or the rear side wall of the cleaning box.

In other embodiments of the wind screen roller combined seed cleaning device, the difference from the above embodiments is that: the air inlets of the impurity suction fan can be arranged in a plurality of air inlets and can also be arranged at other positions of the shell, for example, the two air inlets are arranged on the side surface of the shell, a movable air door is not needed to be arranged, one air inlet forms a main impurity suction area, the other air inlet forms an auxiliary impurity suction area, and the two air inlets are respectively communicated with the first impurity suction port and the second impurity suction port.

In other embodiments of the wind screen roller combined seed cleaning device, the difference from the above embodiments is that: the shell of the impurity suction fan can be communicated with the auxiliary impurity suction area and the second impurity suction port through a hose passage without arranging an auxiliary impurity suction passage, so that suction negative pressure is provided for the second impurity suction port.

In other embodiments of the wind screen roller combined seed cleaning device, the difference from the above embodiments is that: the structure of the first impurity absorbing opening and the second impurity absorbing opening is not a flaring structure but a conventional straight opening structure, and the auxiliary impurity absorbing channel is not provided with a bending structure but is a long straight pipeline or a curved pipeline.

In other embodiments of the wind screen roller combined seed cleaning device, the difference from the above embodiments is that: the cleaning device can also directly collect the cleaned seeds by utilizing the cleaning box without arranging the seed collecting box and the impurity box, and increase the distance between the seed outlet of the cleaning box and the impurity outlet of the impurity suction fan, so that impurities are directly discharged from the impurity outlet.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. The utility model provides a box-like seed cleaning plant of wind screen roller, includes frame (2), feeding mouth (10), vibration cleaning sieve (9) and roller cleaning room (6) with higher speed, roller cleaning room (6) are including cleaning box (24) and a plurality of roller with higher speed, and cleaning box (24) top is equipped with the feed inlet, roller horizontal arrangement is in the feed inlet below with higher speed, its characterized in that:

the impurity suction fan comprises a shell (16), a first impurity suction port (15) facing the screen surface of the vibrating cleaning screen (9) is formed in the bottom of the shell (16), a first negative pressure suction area is formed on the screen surface of the vibrating cleaning screen (9) by the first impurity suction port (15), and the feed port is arranged below the vibrating cleaning screen (9) and upwards arranged corresponding to the first impurity suction port (15); a second impurity suction port (14) is formed in the side wall of the cleaning box (24), and the second impurity suction port (14) is positioned below the accelerating rollers so as to form a second negative pressure suction area which sucks towards the side direction in the cleaning box (24);

when the seed cleaning device is used, the first negative pressure suction area is used for sucking sundries (20) separated by the vibrating cleaning sieve (9), the accelerating roller is used for separating seeds (21) and residual sundries (20) which penetrate through the sieve pores of the vibrating cleaning sieve (9) and accelerating the falling speed of the seeds (21) and the sundries (20), and the second negative pressure suction area is used for sucking the sundries (20) in the cleaning box (24).

2. The wind screen roller combination type seed cleaning device according to claim 1, characterized in that: an auxiliary impurity suction channel (3) is arranged on a shell (16) of the impurity suction fan (1), and the auxiliary impurity suction channel (3) is communicated with the second impurity suction port (14) to provide suction negative pressure for the second impurity suction port (14).

3. The wind screen roller combination type seed cleaning device according to claim 1 or 2, characterized in that: the number of the second impurity suction ports (14) is two, and the second impurity suction ports (14) are respectively arranged on the opposite side walls of the cleaning box (24).

4. The wind screen roller combination type seed cleaning device according to claim 3, characterized in that: the axial direction of the accelerating rollers is defined as the front-back direction, the arrangement direction of the accelerating rollers is the left-right direction, and the two second impurity suction ports (14) are oppositely arranged on the side walls of the cleaning boxes (24) at the left side and the right side of the accelerating rollers, so that stable negative pressure airflow is provided for the cleaning boxes (24) to better realize the separation of seeds (21) and impurities (20).

5. The wind screen roller combination type seed cleaning device according to claim 2, characterized in that: an air inlet is arranged at the bottom of a shell (16) of the impurity suction fan (1), the air inlet comprises a main impurity suction area and an auxiliary impurity suction area, the primary impurity-absorbing area forms the first impurity-absorbing opening (15), the secondary impurity-absorbing area is communicated with the second impurity-absorbing opening (14) through the secondary impurity-absorbing channel (3), the auxiliary impurity absorbing channel (3) comprises an upper cylinder body and a lower cylinder body which are communicated with each other, the lower end of the upper cylinder body is fixedly connected with the upper end of the lower cylinder body, the axial direction of the accelerating rollers is defined as the front-back direction, the arrangement direction of the accelerating rollers is the left-right direction, the upper cylinder body extends from top to bottom in the left-right direction towards the direction far away from the impurity absorbing fan (1), the lower cylinder body extends from top to bottom in the left-right direction towards the direction close to the cleaning box (24), thereby forming a bending structure in the middle of the secondary impurity suction channel (3) to avoid the vibrating cleaning screen (9).

6. The wind screen roller combination type seed cleaning device according to claim 5, characterized in that: the air inlet is internally provided with a movable air door (23), the movable air door (23) separates the air inlet to form a main impurity suction area and an auxiliary impurity suction area, and the movable air door (23) can be freely adjusted to change the ventilation volume of the first impurity suction port (15) and the second impurity suction port (14).

7. The wind screen roller combination type seed cleaning device according to claim 5, characterized in that: feeding mouth (10) with gettering fan (1) is in along fore-and-aft direction horizontal arrangement vibration cleaning sieve (9) top, feeding mouth (10) are located the front side of gettering fan (1), main gettering region is in with vice gettering region arrange along the fore-and-aft direction in the air inlet of gettering fan (1), both sides are provided with guide plate (13) respectively around the casing (16) bottom of gettering fan (1), and guide plate (13) top-down slope setting forward of front side to form the ascending flaring structure of fore-and-aft direction, make first negative pressure suction district covers the top of whole vibration cleaning sieve (9).

8. The wind screen roller combination type seed cleaning device according to claim 2, characterized in that: the auxiliary impurity suction channel (3) is communicated with the structure at the second impurity suction port (14) and is of a flaring structure, and the radial sectional area of the flaring structure gradually increases towards the interior of the cleaning box (24) so as to enlarge the coverage area of the second negative pressure suction area.

9. The wind screen roller combination type seed cleaning device according to claim 1, characterized in that: the impurity outlet (11) of the impurity absorbing fan (1) faces the direction deviating from the feeding port (10).

10. The wind screen roller combination type seed cleaning device according to claim 1, characterized in that: still including seed collection box (5) and glove compartment (4), the bottom of roller cleaning room (6) is provided with out the kind of a mouth with higher speed, seed collection box (5) set up the below of going out the kind of a mouth for collect seed (21) after cleaning, glove compartment (4) set up the play miscellaneous mouthful (11) department of gettering fan (1) for collect debris (20) of cleaning out.