CN209189260U - A kind of multiple coil cereal cleaning device - Google Patents

Abstract

The utility model discloses a multi-stage spiral grain cleaning device, which comprises from top to bottom: a feeding device, a large cleaning layer, a medium cleaning layer and a small cleaning layer; the cleaning layer includes: a box body, It is a square box with openings on the top and bottom, and the bottom of the box is provided with transverse wooden strips to divide the opening at the bottom of the box into a screening outlet and an impurity outlet; a plurality of sieves, which are semi-cylindrical screens, the The section of the sieve is semicircular, the sieve is detachably fixed in the box, and the sieve is located above the screening outlet; a plurality of parallel conveying augers are rotatably supported on the Inside the box, the conveying auger is arranged coaxially with the sieve, and the length direction of the conveying auger is perpendicular to the length direction of the horizontal bar; The screening area in the moving direction of the screen surface increases the processing capacity.

Description

A multi-stage spiral grain cleaning device

technical field

The utility model relates to the field of grain cleaning and sorting, in particular to a multi-stage spiral grain cleaning device.

Background technique

When the impurities in the grain are put into storage, due to the phenomenon of automatic grading, they accumulate in a certain part of the grain pile, forming an obvious impurity area. The organic impurities in the impurity area have high water content, strong hygroscopicity, large amount of bacteria, high respiration intensity, and poor storage stability. In addition, fine impurities can reduce the porosity of the grain pile, making it difficult for the heat and humidity in the grain pile to dissipate, which is also an unsafe factor for grain storage. These impurities have buried hidden dangers for the safe storage of grain to a large extent; they have also increased the volume and storage costs of the granary. Therefore, the impurity content should be reduced as much as possible before storage to ensure the stability of grain storage. The cleaning equipment in grain machinery is classified according to its function, mainly including winnowing, screening, gravity sorting and other equipment. Different equipment has different performance and characteristics, and each has its own shortcomings. In the prior art, grain cleaning is mainly based on a vibrating cleaning machine, which consists of a frame, a feeding system installed on the frame and connected in sequence, a vibrating screen and a wind separation and dust removal system. Materials with various impurities are fed into the The impurity is discharged from the impurity outlet, the clean grain is output from the discharge port, and the dust and other impurities are discharged from the slag outlet of the winnowing dust removal system and passed through the dust removal device. collect. Many products of grain cleaning equipment currently on the market have relatively single functions, and seldom satisfy large processing capacity, high-efficiency environmental protection cleaning, high-efficiency dust removal and high-efficiency recovery at the same time.

Utility model content

The utility model adopts the principle of auger conveying, and the sieve surface used for sieving is a semicircular sieve surface, which increases the sieving area in the moving direction of the sieve surface, thereby increasing the processing capacity.

The technical scheme provided by the utility model is:

A multi-stage spiral grain cleaning device, including from top to bottom: a feeding device, a cleaning layer for large impurities, a cleaning layer for medium impurities and a cleaning layer for small impurities; the cleaning layer includes:

A box body, which is a square box body with openings on the top and bottom, and the bottom of the box body is provided with transverse wooden strips to separate the opening at the bottom of the box body into a screening outlet and an impurity outlet;

A plurality of sieves, which are semi-cylindrical screens, the cross-section of the sieves is semicircular, the sieves are detachably fixed in the box, and the sieves are located above the screening outlet;

A plurality of conveying augers arranged in parallel can be rotatably supported in the box, the conveying augers are coaxially arranged with the sieve, and the length direction of the conveying augers is perpendicular to the length direction of the horizontal bar ;

Wherein, the sieve mesh diameters of the large impurity cleaning layer and the middle impurity cleaning layer are larger than the grain diameter, the sieve mesh diameters of the small impurity cleaning layer are smaller than the grain diameter, and the bottom of the small impurity cleaning layer is also A grain outlet is included, which is arranged between the screening outlet and the impurity outlet.

Preferably, one end of the conveying auger protrudes from the box, and has a driving gear, and the driving gear can drive the conveying auger to rotate.

Preferably, it also includes a chain, which is sheathed on the driving gear and can drive the driving gear to rotate.

Preferably, a baffle is also included, which is arranged on the top of the box and above the impurity outlet.

Preferably, the feeding device includes:

granary;

A granary storage bin, which is arranged at the bottom of the granary storage bin, has a perspective window on one side of the granary storage bin, and the granary storage bin is connected to the large miscellaneous cleaning layer;

Six impellers for grain discharge, which are rotatably supported at the bottom of the grain storage bin;

The buffer plate is obliquely arranged below the grain-intake bin and below the six grain-discharging impellers.

Preferably, it also includes a dust remover, which is arranged on one side of the large-scale cleaning layer and communicates with the top of the large-scale cleaning layer.

Preferably, it also includes a bottom frame, which is arranged at the bottom of the small impurity cleaning layer.

Preferably, the large trash cleaning layer and the medium trash cleaning layer have maintenance doors.

Beneficial effects described in the utility model

The utility model adopts the conveying principle of the auger, and the material particles entering the sieve move forward along the axial direction of the auger under the action of the auger, and the sieve surface used for screening is a semicircular sieve surface. The surface is arc-shaped along the direction of material movement. Under the same projected area, the effective screening area is the area after the semicircular sieve is unfolded, which increases the screening area in the direction of movement of the sieve surface, which is comparable to the traditional sieve. Ratio, increasing the cleaning area, thereby increasing the processing capacity.

The sieves of traditional screening machines are generally installed at an incline. The sieve sheet of the utility model is installed horizontally. During the sieving process, the material moves horizontally with the conveying auger, which increases the effective projected area of the sieve hole, thereby increasing the screening efficiency.

The six grain row impellers are used to feed the material under the hopper, and there is a buffer plate under the six grain row impellers. The material enters the storage bin first, and then enters the screen surface continuously and evenly under the action of the six grain row impellers to increase the screening area and avoid Due to discontinuous and uneven feeding, the screening process is discontinuous, which reduces the screening efficiency. In addition, uneven feeding will cause uneven stress on the screen surface and reduce the service life of the equipment.

There are three layers of cleaning screens, and the outlet is divided into grain outlet, small impurity outlet, large and medium impurity mixed outlet and dust outlet. Among them, the grain export can be directly connected to the conveying equipment, which reduces other manual links, reduces labor force and saves costs. The dust outlet is equipped with dust removal equipment, and the gas containing light impurities and dust is sucked into the dust collector through negative pressure, and the dust and light impurities are separated by the dust collector.

Description of drawings

Fig. 1 is a schematic structural view of the multi-stage spiral grain cleaning device described in the present invention.

Fig. 2 is a schematic diagram of the internal structure of the multi-stage spiral grain cleaning device described in the present invention.

Fig. 3 is a top view of the multi-stage spiral grain cleaning device of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the impurity cleaning layer described in the present invention.

Fig. 5 is a left view of the impurity cleaning layer described in the present invention.

Fig. 6 is a schematic structural view of the auger described in the present invention.

Fig. 7 is a schematic structural view of the feed port described in the present invention.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

As shown in Figure 1, the multi-stage spiral grain cleaning device provided by the utility model includes: a cleaning screen bottom bracket 1, a small impurity outlet 2, a small impurity cleaning layer 3, a medium impurity cleaning layer 4, and a large impurity cleaning layer 5. Material inlet 6, ladder 7, air duct 8, grain outlet 9, mixed impurity outlet 10, dust collector 11, cleaning layer drive motor 12 and grain discharge six impeller drive motor 13.

As shown in Figures 2 and 3, wherein, the bottom support 1 of the cleaning screen is placed on the ground, the small miscellaneous cleaning layer 3 is arranged above the bottom support 1 of the cleaning screen, and the middle miscellaneous cleaning layer 4 is located above the small miscellaneous cleaning layer 3 , the large miscellaneous cleaning layer 5 is located above the middle miscellaneous cleaning layer 4, and the top of the large miscellaneous cleaning layer 5 has a feed inlet 6, the small miscellaneous cleaning layer 3, the middle miscellaneous cleaning layer 4, and the large miscellaneous cleaning layer 5 are connected to each other.

The small miscellaneous cleaning floor 3 and the middle miscellaneous cleaning floor 4 are respectively equipped with a small miscellaneous cleaning floor door 310 and a medium miscellaneous cleaning floor door 410, which are used for staff to enter the equipment for internal inspection and maintenance. Small miscellaneous cleaning layer 3, medium miscellaneous cleaning layer 4, and large miscellaneous cleaning layer 5 are respectively equipped with small miscellaneous cleaning sieve 320, middle miscellaneous cleaning sieve 420, and large miscellaneous cleaning sieve 510, which are used to clean up different impurities; Baffle plate 330 and baffle plate 430 are respectively installed on the discharge ends of the miscellaneous cleaning layer 3 and the medium miscellaneous cleaning layer 4, which are used to block the material that jumps up during the screening process, so as to avoid entering the impurity channel and flowing out from the mixed impurity outlet 10 to cause grain loss. False screening. The inside of the air duct 8 is equipped with an arc-shaped deflector 820 to prevent serious backflow of the internal fluid and reduce the dust removal efficiency.

The three cleaning layers are equipped with a cleaning layer driving motor 12, which drives the conveyor auger 440 to rotate through the chain 1220, and the driving motor is connected to the frequency converter to adjust the speed according to the actual situation; each chain is equipped with a shield 1210 to reduce dust adhesion and increase chain speed. life. The top of the cleaning screen is equipped with a six-impeller drive motor 13 for grain discharge, which drives the six impellers for grain discharge 620 to rotate through the sprocket mechanism, and evenly discharges the materials in the hopper storage bin 640 to the screen surface, and the motor speed is controlled by a frequency converter. A door 810 is installed on the top of the air duct for accessing the interior of the equipment for inspection and maintenance.

As shown in Figures 4-6, the large miscellaneous cleaning layer 5 and the middle miscellaneous cleaning layer 4 have the same structure, including: a box body, which is a square box body with openings on the top and bottom, and the bottom of the box body is provided with transverse wooden strips to separate the box body. The bottom opening is divided into screening outlet and impurity outlet;

A plurality of conveying augers 440 arranged in parallel, the two ends of the conveying augers 440 are connected on the bearing housing 1230 through bearings, and the medium cleaning screen 420 and the conveying augers 440 are installed coaxially. Baffles 450 are installed on both sides of the cleaning layer and the feeding end face, which are used to guide the falling grain into the sieve 420 . The sieve sheet 420 is supported by the sieve sheet vertical support 460, and the vertical support is fixed on the horizontal support 470. Before work, the sieve sheet of the corresponding size of the sieve hole can be selected according to the grain size of the sieved grain, and the sieve sheet is connected by bolts for easy disassembly.

A plurality of sieves 420, which are semi-cylindrical screens with a semicircular cross-section, are detachably fixed in the box, and the sieves are located above the screening outlet; the conveying auger 440 and the sieve 420 are coaxially arranged , the length direction of the conveying auger is perpendicular to the length direction of the transverse bar.

Fig. 7 is the feeding part, the grain in the storage bin 640 is discharged into the large miscellaneous cleaning layer 5 by the six impellers 620, and a buffer plate 610 is provided under the six impellers for stabilizing the grain discharge speed of the six impellers , to make it evenly discharge grain. A glass see-through window 630 is installed below the feeding port for observing abnormal conditions in the storage bin 640 . A material level sensor 650 is also installed in the storage bin, and when the grain is lower than the material level sensor, an alarm is started to avoid losses caused by equipment idling.

Working principle and process: The cleaning sieve uses the principle of screw conveying and solid bulk material separation to realize impurity screening during the process of grain being transported by the auger. During work, the miscellaneous grain is transported to the storage bin 640 of the feeding part 6 by a belt conveyor or a bucket elevator for storage. Start each cleaning layer drive motor, and after it stabilizes, open the six impeller drive motor 13 for grain discharge, and the grain in the storage bin 640 enters the large miscellaneous cleaning layer 5 along the buffer plate 610 under the action of the six impellers 620, and cannot pass through the large miscellaneous The large impurities in the sieve 510 are brought to the impurity channel by the conveying auger and discharged from the mixed impurity outlet 10 . Particles passing through the large miscellaneous sieve 510 enter the medium-sized impurities cleaning layer 4. The function of the medium-sized impurities cleaning layer is to remove medium-sized impurities. 10 discharge. Particles passing through the medium miscellaneous sieve 420 enter the small miscellaneous cleaning layer 3, and the conveying auger pushes the grain particles into the grain outlet 9, and the discharged clean grain is transported away by the conveying equipment of the grain outlet, while the grain separated by the small miscellaneous sieve 320 Small impurities enter the small impurity outlet 2 and are discharged out of the impurity collection bag outside the machine. A material level sensor 650 is also housed in the storage bin, and when the grain is lower than the material level sensor, an alarm is started, and the equipment is turned off in time to avoid losses caused by equipment idling. When the grain cleaned by the spiral cleaning machine meets the requirements of the national standard, the grain can be stored or used for other purposes

Taking corn as an example, after three-stage screening, the screening efficiency of impurities reaches 99%.

The utility model adopts the conveying principle of the auger, and the material particles entering the sieve move forward along the axial direction of the auger under the action of the auger, and the sieve surface used for screening is a semicircular sieve surface. The surface is arc-shaped along the direction of material movement. Under the same projected area, the effective screening area is the area after the semicircular sieve is unfolded, which increases the screening area in the direction of movement of the sieve surface, which is comparable to the traditional sieve. Ratio, increasing the cleaning area, thereby increasing the processing capacity.

The sieves of traditional screening machines are generally installed at an incline. The sieve sheet of the utility model is installed horizontally. During the sieving process, the material moves horizontally with the conveying auger, which increases the effective projected area of the sieve hole, thereby increasing the screening efficiency.

The six grain row impellers are used to feed the material under the hopper, and there is a buffer plate under the six grain row impellers. The material enters the storage bin first, and then enters the screen surface continuously and evenly under the action of the six grain row impellers to increase the screening area and avoid Due to discontinuous and uneven feeding, the screening process is discontinuous, which reduces the screening efficiency. In addition, uneven feeding will cause uneven stress on the screen surface and reduce the service life of the equipment.

There are three layers of cleaning screens, and the outlet is divided into grain outlet, small impurity outlet, large and medium impurity mixed outlet and dust outlet. Among them, the grain export can be directly connected to the conveying equipment, which reduces other manual links, reduces labor force and saves costs. The dust outlet is equipped with dust removal equipment, and the gas containing light impurities and dust is sucked into the dust collector through negative pressure, and the dust and light impurities are separated by the dust collector.

Traditional cleaning sieves are generally equipped with a vibration source, and the working process is accompanied by the vibration of the vibration source. The noise is relatively large, and it is easy to cause equipment resonance, which not only reduces the life of the equipment, but also affects the health of the operator. The utility model adopts the spiral conveying mode of the conveying auger to propel the material, and the noise is relatively small in the working process. The grain feeding storage bin is equipped with a material level sensor to monitor the change of the material level in real time. When the grain surface is lower than the material level sensor, an alarm will be issued in time.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the description and the implementation, and it can be applied to various fields suitable for the present utility model. For those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (8)

1. A multi-stage spiral grain cleaning device is characterized in that it comprises successively from top to bottom: feeding device, large miscellaneous cleaning layer, middle miscellaneous cleaning layer and small miscellaneous cleaning layer; said cleaning layer includes: A box body, which is a square box body with openings on the top and bottom, and the bottom of the box body is provided with transverse wooden strips to separate the opening at the bottom of the box body into a screening outlet and an impurity outlet; A plurality of sieves, which are semi-cylindrical screens, the cross-section of the sieves is semicircular, the sieves are detachably fixed in the box, and the sieves are located above the screening outlet; A plurality of conveying augers arranged in parallel can be rotatably supported in the box, the conveying augers are coaxially arranged with the sieve, and the length direction of the conveying augers is perpendicular to the length direction of the horizontal bar ; Wherein, the sieve mesh diameters of the large miscellaneous cleaning layer and the middle miscellaneous cleaning layer are larger than the grain diameter, the sieve mesh diameters of the small miscellaneous cleaning layer are smaller than the grain diameter, and the bottom of the small miscellaneous cleaning layer is also A grain outlet is included, which is arranged between the screening outlet and the impurity outlet. 2. The multi-stage spiral grain cleaning device according to claim 1, wherein one end of the conveying auger protrudes from the box body, and has a driving gear, and the driving gear can drive the conveying auger to rotate . 3. The multi-stage spiral grain cleaning device according to claim 2, further comprising a chain, which is sheathed on the driving gear and can drive the driving gear to rotate. 4. The multi-stage spiral grain cleaning device according to claim 2 or 3, characterized in that it further comprises a baffle, which is arranged on the top of the box and above the impurity outlet. 5. multistage spiral grain cleaning device according to claim 4, is characterized in that, described feeding device comprises: granary; A granary storage bin, which is arranged at the bottom of the granary storage bin, has a perspective window on one side of the granary storage bin, and the granary storage bin is connected to the large miscellaneous cleaning layer; Six impellers for grain discharge, which are rotatably supported at the bottom of the grain storage bin; The buffer plate is obliquely arranged below the grain-intake bin and below the six grain-discharging impellers. 6. The multi-stage spiral grain cleaning device according to any one of claims 1-3, 5, characterized in that, it also includes a dust collector, which is arranged on one side of the large miscellaneous cleaning layer and communicates with the large Miscellaneous cleanup layer on top. 7. The multi-stage spiral grain cleaning device according to claim 6, further comprising a bottom frame, which is arranged at the bottom of the small impurity cleaning layer. 8. The multi-stage spiral grain cleaning device according to claim 1, characterized in that, the large trash cleaning layer and the medium trash cleaning layer have maintenance doors.