CN212041490U - Portable high-efficient environmental protection grain impurity cleaning device - Google Patents

Abstract

The embodiment of the utility model discloses a movable high-efficiency environment-friendly grain impurity cleaning device, which comprises a cylindrical screen, a vibrating screen and a circulating winnowing system which are arranged from top to bottom in sequence; the cylindrical screen comprises a screen drum, a rotating shaft is arranged in the screen drum, and a packing auger blade is arranged on the rotating shaft; the screen drum is in driving connection with a first rotating motor; the rotating shaft is in driving connection with the second rotating motor; the circulating winnowing system comprises an air suction device, an air blowing device, a filtering device and a dust filtering device, wherein a winnowing channel is arranged between the air suction device and the air blowing device, the air suction device and the air blowing device are connected through the filtering device, and the dust filtering device is connected with the air blowing device through a pressure reducing pipe; therefore, when the grain screening machine is used, the screening drum and the rotating shaft can rotate, so that the flow speed of grains in the screening drum is changed, and the utilization rate of the screening surface is improved; through the decompression pipe and the dust filtering device, dust pollution of the equipment operation environment in use is also avoided.

Description

Portable high-efficient environmental protection grain impurity cleaning device

Technical Field

The utility model relates to a cleaning device especially relates to a portable high-efficient environmental protection grain impurity cleaning device.

Background

In the grain production process, soil, gravels, chaffs and the like with different sizes in grains need to be cleaned, so that impurities in the grains are reduced. At present when screening grain, often need different screening equipment to carry out coarse screening, fine screen and selection by winnowing to grain, but at the in-process of screening through these equipment, the drum sieve that carries out the coarse screening grain piles up in the feed inlet and the first half section department of a sieve section of thick bamboo very easily when using, make the sifter at other positions of a sieve section of thick bamboo be located the vacant state, the problem that the utilization ratio of sifter is not high in the sieve section of thick bamboo has been leaded to like this, there is a large amount of dusts often in the circulation air separation system who carries out the selection by winnowing when using simultaneously, the dust pollution that can cause equipment operation environment in the air of directly discharging. All kinds of impurities in the grains are to be cleaned up, different types of equipment are required to be combined, if single-function equipment is used, the number of the whole operation line equipment is large, the length of the operation line is large, and the occupied area is large, so that the equipment of various different types is required to be combined in actual work, and meanwhile, the equipment is convenient to move and transport, and the size and the weight of the equipment cannot be overlarge.

SUMMERY OF THE UTILITY MODEL

For solving above technical problem, the embodiment of the utility model provides a portable high-efficient environmental protection grain impurity cleaning device can carry out rational utilization through the position to on the removal automobile body to thereby collect the space through carrying out the shale shaker to the grain of drum sieve lower part and handle the fine screen and improve the space utilization in the whole equipment, improved area and removed inconvenient problem greatly, simultaneously, also reduced the pollution degree of exhaust gas to the air behind the wind sieve through gas purification device.

In order to achieve the above purpose, the embodiment of the present invention provides a technical solution that:

the embodiment of the utility model provides a movable high-efficiency environment-friendly grain impurity cleaning device, which comprises a cylindrical screen, a vibrating screen and a circulating winnowing system which are arranged from top to bottom in sequence; the cylindrical screen comprises a screen drum, a rotating shaft is arranged in the screen drum, and a packing auger blade is arranged on the rotating shaft; the screen drum is in driving connection with a first rotating motor; the rotating shaft is in driving connection with the second rotating motor; circulation air classification system is including the device that induced drafts, blast apparatus, filter equipment and dust filter equipment, induced draft the device with set up the selection by winnowing passageway between the blast apparatus, the selection by winnowing passageway is located mouthful below is collected to the grain of shale shaker, induced draft the device with blast apparatus passes through filter equipment connects, dust filter equipment pass through the decompression pipe with blast apparatus connects.

The embodiment of the utility model provides an in, sieve section of thick bamboo slope sets up, the terminal surface of sieve section of thick bamboo high-end department sets up the grain import, the terminal surface of sieve section of thick bamboo low-end department sets up the impurity export, sieve section of thick bamboo high-end department set up in the pivot auger blade.

In the embodiment of the utility model, the vibrating screen comprises a screen plate, a vibrating frame, a supporting spring and a vibrating motor, the screen plate is fixed by the supporting spring, and the vibrating motor is arranged on the back of the screen plate by the vibrating frame; the sieve plate is arranged right below the sieve drum of the cylindrical sieve, and the sieve plate is obliquely arranged; a gravity door is arranged below the discharging position at the lower end of the sieve plate and is positioned above the air separation channel; and a fine impurity collecting device is arranged below the sieve plate.

The embodiment of the utility model provides an in, the shale shaker is still including leading the grain board, it sets up to lead the grain board the screen drum of cylinder sieve with between the sieve of shale shaker, lead the grain board to the sieve slope setting of shale shaker, wherein, the low side of leading the grain board is close to the sieve upper end setting of shale shaker.

The embodiment of the utility model provides an in, dust filter equipment's impurity export sets up first collection device, first collection device includes hopper and row's miscellaneous auger, it is closed ejection of compact structure to arrange miscellaneous auger, just it is located to arrange miscellaneous auger the hopper bottom.

In the embodiment of the utility model, the filtering device is a cyclone dust collector, and the air inlet of the filtering device is connected with the air suction device; a purified gas outlet of the filtering device is provided with a centrifugal fan, and an air outlet of the centrifugal fan is connected with the blowing device; and the impurity outlet of the filtering device is connected with the second collecting device.

In the embodiment of the utility model, the air suction device comprises a plate-type air suction pipeline, the plate-type air suction pipeline is arranged at one side of the air separation channel, and the plate-type air suction pipeline is connected with the filter device through a first air uniform pipeline;

the blowing device comprises a plate-type blowing pipeline, the plate-type blowing pipeline is arranged on the other side of the air separation channel, and the plate-type blowing pipeline is connected with the filtering device through a second air homogenizing pipeline;

the plate-type air suction pipeline is characterized in that an air suction opening of the plate-type air suction pipeline is opposite to an air blowing opening of the plate-type air blowing pipeline, and the caliber of an air suction opening of the air suction device is larger than that of an air blowing opening of the air blowing device.

The embodiment of the utility model provides an in, the lower side edge of last inlet scoop of the device that induced drafts sets up the stock guide, the stock guide by the device that induced drafts to blast apparatus slope.

In the embodiment of the utility model, there are two cylindrical screens, and the two cylindrical screens are arranged side by side; the lower part of each cylindrical screen is provided with the vibrating screen, and the discharge end of the upper screen plate of each vibrating screen is obliquely arranged towards the air separation channel.

In the embodiment of the utility model, the device also comprises a moving vehicle body, wherein the moving vehicle body is provided with a grain screening area and a gas purification area, and the gas purification area is provided with a filtering device and a dust filtering device; the grain screening area is provided with a conveying device, the conveying device is arranged below the winnowing channel, and the cylindrical screen, the vibrating screen, the air suction device and the air blowing device are arranged above the conveying device through a frame of the moving vehicle body.

The embodiment of the utility model provides a movable high-efficiency environment-friendly grain impurity cleaning device, which comprises a cylindrical screen, a vibrating screen and a circulating winnowing system which are arranged from top to bottom in sequence; the cylindrical screen comprises a screen drum, a rotating shaft is arranged in the screen drum, and a packing auger blade is arranged on the rotating shaft; the screen drum is in driving connection with a first rotating motor; the rotating shaft is in driving connection with the second rotating motor; the circulating winnowing system comprises an air suction device, an air blowing device, a filtering device and a dust filtering device, a winnowing channel is arranged between the air suction device and the air blowing device, the winnowing channel is positioned below the vibrating screen, the air suction device and the air blowing device are connected through the filtering device, and the dust filtering device is connected with the air blowing device through a pressure reducing pipe; when the grain screening machine is used, grain is subjected to coarse screening, fine screening and winnowing in sequence through the cylindrical screen, the vibrating screen and the circulating winnowing system, wherein when coarse screening is performed, the screen drum is driven to rotate through the first rotating motor, the rotating shaft is driven to drive the auger blade to rotate through the second rotating motor, then the grain is conveyed into the screen drum, the rotating speeds of the screen drum and the rotating shaft are adjusted according to actual requirements, the flowing speed of the grain in the screen drum is changed, the utilization rate of a screen surface is improved, and meanwhile the problems that the grain is accumulated at the front part of the screen drum and the grain is less in a rear section screen surface are solved; when fine impurity screening is carried out, the sieve plate generates linear vibration displacement through the vibration motor, the vibration rack and the supporting spring, and fine impurities in grains are separated by utilizing a screening principle; during winnowing, the air suction device separates impurities from grains by air suction under the negative pressure effect and by utilizing different characteristics of the specific gravity of the grains and the impurities; the blowing device is used for conveying the waste gas separated by the filtering device to the part to be separated by winnowing, so that the winnowing speed of the winnowing separation position is improved, and the impurity separation efficiency is improved. The filtering device is used for separating and settling impurities in the gas collected by the air suction device; the pressure reducing pipe is used for reducing the pressure in the blowing device, so that the wind speed and the pressure output by the blowing device are stable, and the stability of the winnowing effect is further ensured. The dust filtering device is used for separating the waste gas entering through the decompression pipe. The whole device air current is in inside circulation use, does not export waste gas to the outside simultaneously, and then has avoided the dust pollution of equipment operation environment when using.

Drawings

Fig. 1 is a schematic front view of a structure of a mobile efficient environment-friendly grain impurity cleaning device provided by an embodiment of the present invention;

fig. 2 is a schematic perspective view of a structure of a mobile efficient environment-friendly grain impurity cleaning device provided by the embodiment of the utility model;

fig. 3 is a schematic side view of a structure of a mobile efficient environment-friendly grain impurity cleaning device provided by the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a cylindrical screen according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a vibrating screen according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The embodiment of the utility model provides a movable efficient environment-friendly grain impurity cleaning device, as shown in figures 1, 2, 3, 4 and 5, which comprises a cylindrical sieve, a vibrating sieve and a circulating winnowing system which are sequentially arranged from top to bottom; the cylindrical screen comprises a screen drum 11, a rotating shaft 12 is arranged in the screen drum 11, and an auger blade 13 is arranged on the rotating shaft 12; the screen drum 11 is in driving connection with a first rotating motor 14; the rotating shaft 12 is in driving connection with a second rotating motor 15; circulation air classification system is including induced drafting device, blast apparatus, filter equipment 5 and dust filter equipment 6, induced draft the device with set up selection by winnowing passageway 7 between the blast apparatus, selection by winnowing passageway 7 is located mouthful below is collected to the grain of shale shaker, induced draft the device with blast apparatus passes through filter equipment 5 is connected, dust filter equipment 6 through the decompression pipe with blast apparatus connects. The cylindrical sieve is used for coarse sieving of grains, and comprises a sieve drum 11, wherein the sieve drum 11 can be cylindrical, the sieve drum 11 is obliquely arranged, and openings are respectively arranged on the end surfaces of two ends of the sieve drum 11; an end face opening at the high end of the screen drum 11 is a grain inlet, and an end face opening at the low end of the screen drum 11 is an impurity outlet; the body of the screen drum 11 is composed of a drum frame and a screen installed on the drum frame, the caliber of a screen opening on the screen is slightly larger than the granularity of grains to be screened, and the screen opening is sequentially reduced from a grain inlet to an impurity outlet. The screen drum 11 is also in driving connection with the first rotating motor 14, that is, the screen drum 11 rotates by the action of the first rotating motor 14. One end of the screen drum 11 can be fixed through a large-tooth-number chain wheel structure, so that the screen drum 11 can rotate relative to the chain wheel, and the other end of the screen drum 11 can be connected with the first rotating motor 14 through chain transmission. Like this, when carrying out the screening, grain enters into through the grain import in sieve section of thick bamboo 11 to pass through sieve on the sieve section of thick bamboo 11 screens, wherein, the grain after the screening passes through the sieve screen sieves out, and the particle size can not pass through the impurity of sieve net mouth is then passed through impurity export is discharged.

The rotating shaft 12 is arranged in the screen drum 11, the rotating shaft 12 is arranged along the axial direction of the screen drum 11, and preferably, the rotating shaft 12 is arranged along the central axis of the screen drum 11; the rotary shaft 12 is provided with the auger blade 13. The rotating shaft 12 is in driving connection with the second rotating motor 15, that is, the second rotating motor 15 drives the rotating shaft 12 to rotate and drives the auger blade 13 on the rotating shaft 12 to rotate, wherein the connection mode that the second rotating motor 15 drives the rotating shaft 12 to rotate is common knowledge for those skilled in the art, and therefore, the details are not repeated here.

When the sieve drum is used, when grain to be screened is conveyed to the inside of the sieve drum 11 from the grain inlet of the sieve drum 11, due to the rotation of the sieve drum 11 and the inclined arrangement, the grain can move from the high end to the low end of the sieve drum 11 under the action of gravity of the grain when entering the inside of the sieve drum 11, in the moving process, impurities with granularity larger than the mesh opening of the sieve are left in the sieve drum 11 under the action of the sieve screen on the sieve drum 11, and are finally discharged through the impurity outlet under the action of the rotation of the sieve drum 11 and the material homogenizing blades which are arranged along with the inclined arrangement, and the grain to be screened is screened out through the sieve screen.

The grains after being coarsely screened by the cylindrical screen are finely screened by the vibrating screen, in the embodiment of the utility model, the vibrating screen plate 21, the vibrating frame 23, the supporting spring 24 and the vibrating motor 25 are arranged, the vibrating screen plate 21 is fixed by the supporting spring 24, and the vibrating motor 25 is arranged on the back of the vibrating screen plate 21 by the vibrating frame 23; the sieve plate 21 is arranged right below the cylindrical sieve barrel 11, and the sieve plate 21 is obliquely arranged; a gravity gate 8 is arranged below the discharging position at the lower end of the sieve plate 21, and the gravity gate 8 is positioned above the air separation channel 7; and a fine impurity collecting device is arranged below the sieve plate 21.

The vibrating screen further comprises a grain guide plate 22, the grain guide plate 22 is arranged between the screen cylinder 11 of the cylindrical screen and the screen plate 21 of the vibrating screen, the grain guide plate 22 is obliquely arranged towards the screen plate 21 of the vibrating screen, and the lower end of the grain guide plate 22 is arranged close to the upper end of the screen plate 21 of the vibrating screen.

Here, the vibrating screen includes the screen plate 21, the grain guide plate 22 and the vibrating motor 25, the screen plate 21 is installed on a bracket through the supporting spring 24 and is disposed below the screen plate 21; the sieve 21 sets up in an inclined manner, when grain from sieve section of thick bamboo 11 falls into on the sieve 21, through vibrating motor 25's effect, make sieve 21 vibrate, wherein, the less impurity of granularity passes through sieve 21 falls into to be located sieve 21 below in the fine impurity collection device, and the grain that is not screened then follows sieve 21 rolls down to in the gravity door 8, gravity door 8 is in the use, when grain piles up certain weight, gravity door 8 can open for grain falls into in the selection by winnowing passageway 7, thereby makes things convenient for grain to select by winnowing.

In order to ensure that grains are sufficiently screened on the sieve plate 21, the grain guide plate 22 is arranged above the sieve plate 21, so that the grains are prevented from directly falling to the lower end of the sieve plate 21 when falling from the sieve cylinder 11. Specifically, the material guide plate 33 is disposed above the screen plate 21, and the grain guide plate 22 is disposed to be inclined toward the screen plate 21 of the vibrating screen, wherein the lower end of the grain guide plate 22 is disposed near the upper end of the screen plate 21 of the vibrating screen.

Grain process after the shale shaker carries out the fine screen, enter into selection by winnowing passageway 7 carries out the selection by winnowing, selection by winnowing passageway 7's length can with the length of drum sieve upper screen section of thick bamboo 11 with sieve 21 discharge end length matches on the shale shaker, like this when the screening, can not only effectively utilize the length space of removal automobile body 9 also can improve the efficiency of wind sieve. The winnowing channel 7 is used for carrying out air screening through the air suction device and the air blowing device which are arranged on two sides of the winnowing channel 7.

The embodiment of the utility model provides an in, dust filter equipment 6's impurity export sets up first collection device 61, first collection device 61 includes the hopper and arranges miscellaneous auger, arrange miscellaneous auger and be closed ejection of compact structure, just it is located to arrange miscellaneous auger the hopper bottom.

The filtering device 5 is a cyclone dust collector, and an air inlet of the filtering device 5 is connected with the air suction device; a centrifugal fan 51 is arranged on a purified gas outlet of the filtering device 5, and an air outlet of the centrifugal fan 51 is connected with the blowing device; the impurity outlet of the filtering device 5 is connected with a second collecting device 52, wherein the second collecting device 52 is a closed spiral auger.

The air suction device is used for air-separating impurities from grains by utilizing different characteristics of specific gravity of the grains and the impurities through the negative pressure effect generated by the centrifugal fan 51; the blowing device is used for conveying the waste gas separated by the filtering device 5 to the part to be separated by winnowing, and the winnowing speed of winnowing the grain at the position between the blowing device and the air suction device, namely the position where the grain is to be separated by winnowing, is increased; the filtering device 5 is used for separating and settling impurities in the gas collected by the air suction device; the centrifugal fan 51 may be configured to input the filtered gas in the filtering device 5 into the blowing device, and the decompression tube is configured to reduce the pressure in the blowing device, so that the wind speed and the pressure output from the blowing device are stable, and the stability of the winnowing effect is ensured.

The dust filter device 6 is used to separate the exhaust gas entering through the decompression tube. The gas sucked by the suction device is separated and settled by the filtering device 5, and impurities with smaller particle sizes still exist, and if the gas is directly discharged into the atmosphere or overflows into the atmosphere through a subsequent pipeline, dust pollution is caused. Therefore, on one hand, most of air flow is introduced into the grain sorting opening through the air blowing device, is sucked again through the air suction device and is recycled, and on the other hand, the internal pressure of the whole device is kept stable through pressure relief and flow distribution of the pressure reducing pipe. Specifically, part of the dust-containing gas at the outlet of the blower is treated by a dust filter 6 communicating with the pressure reducing pipe. The amount of the treated dusty gas varies with the thickness of the grain layer and the internal pressure. When the thickness of the grain layer is increased, the pressure of the air outlet of the blowing device is increased, the amount of gas guided to the dust filtering device 6 is increased to carry out filtering, when the thickness of the grain layer is reduced, the pressure of the air outlet of the blowing device is reduced, the amount of gas is reduced to enter the dust filtering device 6 to carry out filtering, and the whole circulating system is enabled to keep stable pressure. More specifically, the dust filter 6 may be a filter type dust collector, a pulse bag type dust collector, or a pulse filter cartridge dust collector. Specifically, gas enters into back in the filtration formula dust remover, process the filtration of pulse bag dust remover, during the dust subsides the hopper, carries out airtight collection through the row miscellaneous auger, and the gas after the filtration directly discharges to the atmosphere in, greatly reduced gas to the influence of environment.

Further, in the embodiment of the present invention, the air suction device includes a plate-type air suction pipe 31, the plate-type air suction pipe 31 is disposed at one side of the air separation channel 7, and the plate-type air suction pipe 31 is connected to the filtering device 5 through a first air-homogenizing pipe 32; the blowing device comprises a plate-type blowing pipeline 41, the plate-type blowing pipeline 41 is arranged on the other side of the air separation channel 7, and the plate-type blowing pipeline 41 is connected with the filtering device 5 through a second air homogenizing pipeline 42; the air suction opening of the plate-type air suction pipeline 31 is opposite to the air blowing opening of the plate-type air blowing pipeline 41, and the caliber of the air suction opening of the air suction device is larger than that of the air blowing opening of the air blowing device.

The lower side edge of an upper air suction opening of the air suction device is provided with a material guide plate 33, and the material guide plate 33 inclines from the air suction device to the air blowing device.

Here, board-like aspiration channel 31 with board-like pipeline 41 that blows all is the cuboid form, like this with the shape matching of selection by winnowing passageway 7 to reduce the device that induced drafts with blast apparatus's area, thereby make full use of space, board-like aspiration channel 31's inlet scoop with board-like pipeline 41 that blows's mouth sets up relatively, just the wind gap bore of board-like aspiration channel 31's inlet scoop is greater than the wind gap bore of board-like pipeline 41 that blows's mouth, has guaranteed like this that the wind that board-like pipeline 41 that blows blew out enters into in the board-like aspiration channel 31. The material guide plate 33 is arranged at the lower side edge of the plate-type air suction pipeline 31, on one hand, the material guide plate 33 can guide the air of the blowing device into the air suction device, and on the other hand, can prevent grains from being blown to other places.

The first air-uniformizing duct 32 and the second air-uniformizing duct 42 are used for controlling the pressure of the gas, wherein the aperture of the first air-uniformizing duct 32 is gradually reduced along the gas flowing direction, and the aperture of the second air-uniformizing duct 42 is gradually increased along the gas flowing direction, in actual use, the first air-uniformizing duct 32 and the second air-uniformizing duct 42 are respectively arranged on the frame of the moving vehicle body 9 and are positioned on two sides of the vibrating screen, so that the space on the moving vehicle body 9 is fully utilized.

Further, in the embodiment of the present invention, there are two cylindrical screens, and the two cylindrical screens are arranged side by side; the vibrating screen is arranged below each cylindrical screen, and the discharge end of the upper screen plate 21 of each vibrating screen is obliquely arranged towards the air separation channel 7.

The device also comprises a movable vehicle body 9, wherein a grain screening area and a gas purification area are arranged on the movable vehicle body 9, and a filtering device 5 and a dust filtering device 6 are arranged on the gas purification area; the grain screening area is provided with a conveying device 91, the conveying device 91 is arranged below the winnowing channel 7, and the cylindrical screen, the vibrating screen, the air suction device and the air blowing device are arranged above the conveying device 91 through a frame of the movable vehicle body 9.

Here, the removal automobile body 9 can be traction type flatbed, and its main part is traction type frame, and fixed runner and directive wheel are installed to traction type frame's bottom, have made things convenient for like this the walking and the turning of removal automobile body 9 still set up hydraulic support system on the traction type frame, and when removal automobile body 9 reachs predetermined station, can make things convenient for like this the fixed of removal automobile body 9 with berth, the last traction tow bar that sets up of traction type frame, wherein, the tow bar can be connected in the directive wheel.

As shown in fig. 1, the grain screening area is located at the rear part (i.e. the left side in the figure) of the moving vehicle body 9, a dust-proof box body may be arranged in the grain screening area, equipment for screening grains is located in the dust-proof box body, the conveying device 91 for guiding grains out is arranged on the vehicle plate of the moving vehicle body 9 at the grain screening area, the conveying device 91 may be a conveying belt, the conveying belt is arranged from the front part to the rear part of the moving vehicle body 9, and a port located at the rear part of the moving vehicle body 9 is a discharge port; the gas purge zone is located in the front portion (i.e., the right side in the drawing) of the moving vehicle body 9.

As shown in fig. 3, a conveying device 91 is arranged on the movable vehicle body 9, the air separation device is arranged above a conveying belt of the conveying device 91, the air suction device is arranged on the left side of the air separation device, the air blowing device is arranged on the right side of the air separation device, and the gravity door 8 is arranged above the air separation device.

The impurity conveying device 81, the material guide plate 33, the vibrating screen and the round screen cylinder 11 are sequentially arranged above the air suction device, and the impurity conveying device 81, the material guide plate 33, the vibrating screen and the round screen cylinder 11 are sequentially arranged above the air blowing device.

The two impurity conveying devices 81 are respectively arranged on the plate-type air suction pipeline 31 and the plate-type air blowing pipeline 41 through the frame. The two vibrating screens form an inverted splayed structure through a frame, and a gap between the two vibrating screens is positioned above the gravity gate 8; the two material guide plates 33 are arranged on the frame to form a splayed structure; one of the vibrating screens and one of the guide plates 33 disposed above it form a "Y" shaped structure. The cylindrical screen is rotatably connected with the frame through a roller structure, and the lower part of the cylindrical screen is positioned in an opening at the upper end of the Y-shaped structure.

The first air-homogenizing pipe 32 on the blowing device is arranged on the left side of the vehicle frame, and the second air-homogenizing pipe 42 on the blowing device is arranged on the right side of the vehicle frame.

As shown in figure 1, the feeding hopper is arranged at the feeding port of the cylindrical screen, and the material separating plate is arranged in the feeding hopper, so that grains can enter the two cylindrical screens respectively. The cyclone dust collector 11 and the cloth bag filter are sequentially arranged from left to right.

In the method, the mode that the two cylinder sieves are arranged side by side is adopted, so that in the using process, under the condition of equal space volume, the screen mesh area of the two small-diameter cylinder screening devices which are arranged in parallel is larger than that of the large-diameter cylinder screening device with the same width, specifically, when two cylinder sieves with the diameter of phi 900 and one cylinder sieve with the diameter of phi 1800 are used for comparison, and when the thickness of a grain layer is 100mm, the screen mesh area of the two small cylinders can be improved by 39%. What make like this the embodiment of the utility model provides an under the less space volume, can realize more efficient screening efficiency.

When the inverted splayed vibrating screens arranged below the two cylindrical screens are used for ensuring that grains can be conveyed in the frame of the moving vehicle body 9, the utilization rate of space is improved through the inclined arrangement of the screen plates 21 of the vibrating screens, and the grain guide plates 22 are arranged between the screen plates 21 of the vibrating screens and the cylindrical screens, so that the screening efficiency of the grains on the screen plates 21 of the vibrating screens is ensured, and the space between the screen plates 21 of the vibrating screens and the cylindrical screens is effectively utilized.

By adopting the plate-type air suction pipeline 31 and the plate-type air blowing pipeline 41, the utilization rate of space is saved while the area of winnowing of grains is ensured. And board-like air suction pipeline 31 and an slope set up between sieve 21 with board-like air blowing pipeline 41 and another slope set up all there is the space available between the sieve 21, consequently will impurity conveyor 81 sets up respectively in this space, thereby it is right impurity after sieve 21 screens is retrieved, improves the utilization ratio to the space.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (10)

1. A movable efficient environment-friendly grain impurity cleaning device is characterized by comprising a cylindrical screen, a vibrating screen and a circulating winnowing system which are sequentially arranged from top to bottom; the cylindrical screen comprises a screen drum (11), a rotating shaft (12) is arranged in the screen drum (11), and a packing auger blade (13) is arranged on the rotating shaft (12); the screen drum (11) is in driving connection with a first rotating motor (14); the rotating shaft (12) is in driving connection with a second rotating motor (15); circulation air classification system is including induced drafting device, blast apparatus, filter equipment (5) and dust filter equipment (6), induced draft the device with set up selection by winnowing passageway (7) between the blast apparatus, selection by winnowing passageway (7) are located mouthful below is collected to the grain of shale shaker, induced draft the device with blast apparatus passes through filter equipment (5) are connected, dust filter equipment (6) pass through the decompression pipe with blast apparatus connects.

2. The movable efficient environment-friendly grain impurity cleaning device according to claim 1, wherein the screen drum (11) is obliquely arranged, the end surface at the high end of the screen drum (11) is provided with a grain inlet, the end surface at the low end of the screen drum (11) is provided with an impurity outlet, and the rotating shaft (12) at the high end of the screen drum (11) is provided with the auger blade (13).

3. The mobile efficient environment-friendly grain impurity cleaning device according to claim 1, wherein the vibrating screen comprises a screen plate (21), a vibrating frame (23), a supporting spring (24) and a vibrating motor (25), the screen plate (21) is fixed through the supporting spring (24), and the vibrating motor (25) is installed on the back surface of the screen plate (21) through the vibrating frame (23); the sieve plate (21) is arranged right below the cylindrical sieve drum (11), and the sieve plate (21) is obliquely arranged; a gravity gate (8) is arranged below the discharging position at the lower end of the sieve plate (21), and the gravity gate (8) is positioned above the air separation channel (7); and an impurity conveying device (81) is arranged below the sieve plate (21).

4. The movable efficient environment-friendly grain impurity cleaning device according to claim 1, wherein the vibrating screen further comprises a grain guide plate (22), the grain guide plate (22) is arranged between the screen cylinder (11) of the cylindrical screen and the screen plate (21) of the vibrating screen, the grain guide plate (22) is obliquely arranged towards the screen plate (21) of the vibrating screen, and the lower end of the grain guide plate (22) is arranged close to the upper end of the screen plate (21) of the vibrating screen.

5. The movable efficient environment-friendly grain impurity cleaning device according to claim 1, wherein an impurity outlet of the dust filtering device (6) is provided with a first collecting device (61), the first collecting device (61) comprises a hopper and an impurity discharging auger, the impurity discharging auger is of a closed discharging structure, and the impurity discharging auger is located at the bottom of the hopper.

6. The mobile efficient environment-friendly grain impurity cleaning device according to claim 1, wherein the filtering device (5) is a cyclone dust collector, and an air inlet of the filtering device (5) is connected with the air suction device; a purified gas outlet of the filtering device (5) is provided with a centrifugal fan (51), and an air outlet of the centrifugal fan (51) is connected with the blowing device; the impurity outlet of the filtering device (5) is connected with a second collecting device (52).

7. The movable efficient environment-friendly grain impurity cleaning device according to claim 1, wherein the air suction device comprises a plate-type air suction pipeline (31), the plate-type air suction pipeline (31) is arranged at one side of the air separation channel (7), and the plate-type air suction pipeline (31) is connected with the filtering device (5) through a first air homogenizing pipeline (32);

the blowing device comprises a plate-type blowing pipeline (41), the plate-type blowing pipeline (41) is arranged on the other side of the air separation channel (7), and the plate-type blowing pipeline (41) is connected with the filtering device (5) through a second air homogenizing pipeline (42);

the air suction opening of the plate-type air suction pipeline (31) is opposite to the air blowing opening of the plate-type air blowing pipeline (41), and the caliber of the air suction opening of the air suction device is larger than that of the air blowing opening of the air blowing device.

8. The movable efficient environment-friendly grain impurity cleaning device according to claim 1, wherein a material guide plate (33) is arranged at the lower side edge of an upper air suction opening of the air suction device, and the material guide plate (33) is inclined from the air suction device to the air blowing device.

9. The mobile efficient environment-friendly grain impurity cleaning device according to claim 1, wherein two cylindrical sieves are arranged side by side; the lower part of each cylindrical screen is provided with the vibrating screen, and the discharge end of the upper screen plate (21) of each vibrating screen is obliquely arranged towards the winnowing channel (7).

10. The movable efficient environment-friendly grain impurity cleaning device according to claim 1, further comprising a movable vehicle body (9), wherein a grain screening area and a gas purification area are arranged on the movable vehicle body (9), and a filtering device (5) and a dust filtering device (6) are arranged on the gas purification area; the grain screening area is provided with a conveying device (91), the conveying device (91) is arranged below the winnowing channel (7), and the cylindrical screen, the vibrating screen, the air suction device and the air blowing device are arranged above the conveying device (91) through a frame of the movable vehicle body (9).

Images