A grain cleaning machine

Abstract

The present invention relates to the technical field of grain cleaning machine mechanical equipment, and proposes a grain cleaning machine, including a machine body, a grain inlet box, the grain inlet box is arranged on the machine body, a screen box, the screen box is arranged next to the grain inlet box, has a screen box inlet, a large miscellaneous grain outlet, a main grain outlet and a small miscellaneous grain outlet, the grain inlet box leads to the screen box inlet, an air screen, the air screen is located on one side of the screen box, has an air screen grain inlet, an air screen grain air outlet and a miscellaneous dust outlet, a specific gravity table, the specific gravity table is located below the air screen, has a specific gravity inlet, a final grain outlet and a light miscellaneous grain outlet, wherein the air screen grain air outlet is connected to the specific gravity inlet. Through the above technical scheme, the technical problems of high energy consumption of grain cleaning equipment, high equipment structure, long size and unreasonable structural design in the related technology are solved.

Description

Technical Field

[0001] The invention relates to the technical field of grain cleaning machine mechanical equipment, and in particular to a grain cleaning machine with a reasonable structure. Background Art

[0002] Grain cleaning machine, also known as grain cleaning machine, is a kind of grain screening machine. It relies on the equipment fan and built-in vibrating screen to classify, screen and remove impurities from grain and other economic crops. It is suitable for cleaning and screening economic crops such as corn, wheat, peanuts, soybeans, rice, millet, cotton seeds, camellia seeds, etc. According to different structural compositions and production capacities, grain cleaning machines can be divided into small grain cleaning machines and large grain cleaning machines. Small grain cleaning machines are composed of a frame, a drive motor, a fan, a grain throwing machine and a vibrating screen body. The production capacity is several tons per hour. Compared with other grain machines, it has the characteristics of small size, simple operation, convenient movement and long service life. It is deeply loved by small processing enterprises and small and medium-sized farmers. Large grain cleaning machines are composed of a fuselage, a transport wheel, a transmission part, a main fan, an air suction duct, a dust removal device, a specific gravity screen, a screen box, and a special inlet and outlet. The production capacity can reach tens of tons per hour. Compared with other grain machines, it has the characteristics of high output, high impurity removal rate and no pollution. It is suitable for large and medium-sized flour mills and large feed mills. In the prior art, the grain cleaning machine has the following problems:

[0003] 1. Poor environmental protection, dust from the gravity table. The wind on the gravity table is mostly discharged directly into the atmosphere, resulting in dust. Or, in order to avoid dust, a dust hood is added, but the dust hood needs a dust collector (such as a bag dust collector, etc.) to collect the wind blown up by the gravity table. This avoids dust but increases additional equipment investment and energy consumption.

[0004] 2. The high structure and long size of the equipment lead to increased transportation costs and large space occupation. The unreasonable structural design leads to large size and large space occupation of equipment with the same processing capacity, and poor structural optimization. Summary of the invention

[0005] The present invention provides a grain cleaning machine, which solves the above-mentioned technical problems in the related technology.

[0006] The technical solution of the present invention is as follows:

[0007] A grain cleaning machine comprises a machine body,

[0008] A grain inlet box, wherein the grain inlet box is arranged on the machine body,

[0009] The screen box is arranged beside the grain inlet box, and has a screen box inlet, a large miscellaneous grain outlet, a main grain outlet and a small miscellaneous grain outlet. The grain inlet box leads to the screen box inlet.

[0010] The wind screen is located on one side of the screen box and has a wind screen grain inlet, a wind screen grain air outlet and a dust outlet.

[0011] The specific gravity platform is located below the wind screen, and has a specific gravity inlet, a final grain outlet and a light grain outlet, wherein the wind screen grain air outlet is connected to the specific gravity inlet.

[0012] As a further technical solution, the specific gravity platform also has a specific gravity box cover, the specific gravity inlet, the final grain outlet and the light grain outlet are all arranged on the specific gravity box cover, and the specific gravity box cover also has an air outlet hood port, and the air outlet hood port leads to the atmosphere; wherein, the specific gravity platform also includes a filter material member, and the filter material member is arranged at the air outlet hood port;

[0013] Also includes

[0014] The impurity conveying vibration trough has an impurity inlet and an impurity outlet, the small impurity outlet and the light grain outlet lead to the impurity inlet,

[0015] A blower, the blower is located below the specific gravity table, and the wind is directed into the specific gravity box cover,

[0016] A dust removal mechanism is arranged on the machine body and is communicated with the dust outlet.

[0017] As a further technical solution, the grain entry box includes

[0018] A bucket body is arranged on the machine body and has a bucket outlet at the bottom.

[0019] A material distribution trough is located below the hopper outlet, and the bottom of the material distribution trough has a first slope and a second slope, the first slope is connected to the second slope and the connected end is higher than the distant end, wherein the slope widths of the first slope and the second slope gradually narrow from top to bottom.

[0020] As a further technical solution, the material distribution trough also has a fence.

[0021] The enclosure is provided on one side and the bottom of the first slope.

[0022] The enclosure is provided on one side and the bottom of the second slope.

[0023] The other side of the first slope and the other side of the second slope lead to the screen box inlet.

[0024] The grain inlet box also includes a middle baffle and two inclined sill plates. The middle baffle is arranged on one side of the connection between the first slope body and the second slope body close to the screen box entrance. One of the two inclined sill plates is located between the first slope body and the screen box entrance, and the other is located between the second slope body and the screen box entrance.

[0025] As a further technical solution, the middle baffle can be adjusted in height, and the inclined sill plate is hinged at one end close to the middle baffle, and the height of the end away from the middle baffle is adjustable.

[0026] As a further technical solution, the screen box comprises

[0027] A screen box body, wherein the screen box body is hingedly arranged on the machine body,

[0028] an elastic member, the elastic member being arranged on the machine body and carrying the screen box body,

[0029] A vibration source is arranged on the screen box.

[0030] a first screen and a second screen, wherein the first screen and the second screen are both slidably arranged in the screen box body, and the interior of the screen box body is divided into an upper space, a middle space and a lower space, the screen box inlet leads to the upper space, and the material in the upper space leads to the large miscellaneous material outlet, the screen box inlet and the large miscellaneous material outlet are respectively located on both sides of the upper space, the material in the middle space leads to the main grain outlet, and the bottom of the lower space is inclined and inclined so that the material leads to the small miscellaneous material outlet,

[0031] a transverse large miscellaneous channel, wherein the transverse large miscellaneous channel is located at one side of the upper space, and the large miscellaneous outlet leads to the transverse large miscellaneous channel,

[0032] A vertical large miscellaneous channel is located at one side of the machine body, and the transverse large miscellaneous channel is arranged to be inclined downward and leads to the vertical large miscellaneous channel in an inclined downward manner.

[0033] As a further technical solution, the inner wall of the screen box has a guide groove, and both ends of the first screen and both ends of the second screen have inclined guide bars.

[0034] The screen box further comprises an inclined guide rail, which is arranged in the guide groove, on which the inclined guide bar is slidably arranged, and the inclined guide rail presses the inclined guide bar tightly in the guide groove.

[0035] As a further technical solution,

[0036] The inclined guide bar is slidably arranged on the inclined guide rail along the length direction of the guide groove, and the inclined guide rail is slidably arranged along the depth direction of the guide groove.

[0037] The screen box further comprises a compression spring, one end of which acts on the inclined guide rail and the other end of which acts on the screen box body, so as to provide the inclined guide rail with a force for pressing the inclined guide bar in the guide groove.

[0038] The first screen and the second screen both have a handle, and the screen box further comprises a spreading piece, which is arranged at one end of the inclined guide bar away from the handle, and the spreading piece has a spreading inclined surface, and after the handle is pulled, the spreading inclined surface pushes the inclined guide rail to achieve compression of the compression spring, so that the inclined guide rail cancels the compression of the inclined guide bar,

[0039] The expanded inclined surface is higher in the middle and lower at both ends.

[0040] As a further technical solution, the wind screen includes a wind screen channel, the cross-sectional area of ​​the wind screen channel gradually narrows from top to bottom, the wind screen grain inlet is located on one side of the wind screen channel, the wind screen grain air outlet is located at the bottom of the wind screen channel, and the dust outlet is located at the top of the wind screen channel.

[0041] The dust removal mechanism is two cyclone dust collectors connected in parallel, and the two cyclone dust collectors share a fan.

[0042] As a further technical solution, the bottom of the lower space and the upper part of the specific gravity box cover share a box body, so that the upper part of the specific gravity box cover is inclined, and the filter material is located on one side of the wind screen channel.

[0043] The specific gravity table also includes a vibration table, which is located in the specific gravity box cover and has ventilation holes distributed on the vibration table.

[0044] The blower has an air guide plate at its air outlet, and the air guide plate faces the air screen grain air outlet so that the air sent out by the blower partially flows into the air screen grain air outlet after passing through the ventilation hole, and partially is filtered by the filter material and then sent out from the air outlet hood.

[0045] The screen box also includes a vertical small debris channel, and the small debris outlet leads to the vertical small debris channel.

[0046] The specific gravity table further includes a vertical final grain channel and a vertical light grain channel. The final grain outlet leads to the vertical final grain channel, and the light grain outlet leads to the vertical light grain channel.

[0047] The impurity conveying vibration trough has a plurality of trough bodies, each of which has the impurity inlet and the impurity outlet, and the vertical small impurity channel and the vertical light impurity grain channel lead to the impurity inlets of different trough bodies.

[0048] The working principle and beneficial effects of the present invention are:

[0049] In this embodiment, the specific gravity table is designed to have a hood-shaped space, and has a specific gravity inlet, a final grain outlet and a light grain outlet. A wind screen is also designed above the specific gravity table, which is designed to direct the wind in the specific gravity table from the specific gravity inlet to the wind screen grain inlet of the wind screen. This design, on the one hand, satisfies the requirement that the grain passing through the wind screen can fall into the specific gravity table, and on the other hand, it can also realize that a part of the collected wind in the specific gravity table is aggregated to the specific gravity inlet, and then enters the wind screen upward to provide the wind screen with the wind force required for wind screening. The rear-end wind force in the specific gravity table that would originally be discharged into the atmosphere is well reused as a resource, which on the one hand reduces air pollution, and on the other hand reduces energy consumption, and has a high batch-scale production value. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0052] Figure 2 for Figure 1 AA cross-sectional structure diagram;

[0053] Figure 3 for Figure 2 Middle B is a schematic diagram of a partially enlarged structure;

[0054] Figure 4 It is a schematic diagram of the external structure of the present invention;

[0055] Figure 5 This is a structural schematic diagram of the grain feeding box in the present invention;

[0056] Figure 6 It is a schematic diagram of the structure of the propping member in the present invention;

[0057] In the figure: machine body (1), grain inlet box (2), bucket body (2-1), bucket outlet (2-2), material distribution trough (2-3), first slope body (2-4), second slope body (2-5), enclosure (2-6), middle baffle plate (2-7), inclined sill plate (2-8), screen box (3), screen box inlet (3-1), large miscellaneous outlet (3-2), main grain outlet (3-3), small miscellaneous outlet (3-4), screen box body (3-5 ), elastic member (3-6), vibration source (3-7), first screen (3-8), second screen (3-9), upper space (3-10), middle space (3-11), lower space (3-12), transverse large miscellaneous channel (3-13), vertical large miscellaneous channel (3-14), guide groove (3-15), inclined guide bar (3-16), inclined guide rail (3-17), compression spring (3-18), handle (3 -19), a support member (3-20), a support inclined plane (3-21), a vertical small miscellaneous passage (3-22), an air screen (4), an air screen grain inlet (4-1), an air screen grain air outlet (4-2), a miscellaneous dust outlet (4-3), an air screen passage (4-4), a specific gravity table (5), a specific gravity inlet (5-1), a final grain outlet (5-2), a light miscellaneous grain outlet (5-3), a specific gravity box cover (5-4), an air outlet cover (5-6), a -5), an air outlet hood (5-5), a filter material member (5-6), a vibration table (5-7), a ventilation hole (5-8), a vertical final grain channel (5-9), a vertical light grain channel (5-10), an impurity conveying vibration trough (6), an impurity inlet (6-1), an impurity outlet (6-2), a trough body (6-3), a blower (7), an air guide plate (7-1), a dust removal mechanism (8), and a cyclone dust collector (8-1). DETAILED DESCRIPTION

[0058] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] like Figure 1 to Figure 6 As shown, this embodiment provides a grain cleaning machine, including a machine body 1,

[0060] A grain inlet box 2 is provided on the machine body 1.

[0061] The screen box 3 is arranged beside the grain inlet box 2, and has a screen box inlet 3-1, a large impurity outlet 3-2, a main grain outlet 3-3 and a small impurity outlet 3-4. The grain inlet box 2 leads to the screen box inlet 3-1.

[0062] The wind screen 4 is located on one side of the screen box 3 and has a wind screen grain inlet 4-1, a wind screen grain air outlet 4-2 and a dust outlet 4-3.

[0063] The specific gravity platform 5 is located below the wind screen 4 and has a specific gravity inlet 5-1, a final grain outlet 5-2 and a light grain outlet 5-3, wherein the wind screen grain air outlet 4-2 is connected to the specific gravity inlet 5-1.

[0064] In this embodiment, considering that in the prior art, the grain cleaner has poor environmental protection and the dust problem of the gravity table is serious, the wind from the gravity table is often directly discharged into the air pollution environment. Even if there is a dust collector for dust removal, there are still problems of excessive equipment investment and energy consumption. After improvement, the gravity table 5 in this embodiment is designed to have a hood-shaped space, and has a gravity inlet 5-1, a final grain outlet 5-2 and a light grain outlet 5-3. A wind screen 4 is also designed above the gravity table 5, which is designed to pass the wind in the gravity table 5 from the gravity inlet 5-1 to the wind screen grain inlet 4-1 of the wind screen 4. This design, on the one hand, satisfies the requirement that the grain passing through the wind screen 4 can fall into the gravity table 5, and on the other hand, it can also realize that a part of the collected wind in the gravity table 5 is aggregated to the gravity inlet 5-1, and then enters the wind screen 4 upward, providing the wind screen 4 with the wind force required for wind screening, and well reuses the rear end wind force in the gravity table 5 that would originally be discharged into the atmosphere, on the one hand reduces air pollution, and on the other hand reduces energy consumption, and has a high batch scale production value.

[0065] When the grain cleaner in this embodiment is in use, the raw grain is first sent into the screen box inlet 3-1 of the screen box 3. The screen box 3 can be a two-layer screen, and the upper screen hole is larger than the lower screen hole. After screening by the screen box 3, larger particles of impurities are sent out from the upper large miscellaneous outlet 3-2, the screened staple grain is sent out from the middle staple grain outlet 3-3, and smaller particles of impurities are sent out from the lower small miscellaneous outlet 3-4. The staple grain is then sent to the air screen 4, and the air screen 4 sucks away the light skin, hair, whiskers, and dust for subsequent collection. The remaining staple grain falls into the specific gravity inlet 5-1 of the specific gravity table 5 from the air screen grain inlet 4-1. After being processed by the specific gravity table 5, the finally selected grain is sent out from the final grain outlet 5-2 obliquely below, and relatively light impurities such as moldy grain, insect-eaten grain, shells, stems, etc. are separated and sent out from the light miscellaneous grain outlet 5-3 obliquely above.

[0066] Furthermore, the specific gravity platform 5 also has a specific gravity box cover 5-4, the specific gravity inlet 5-1, the final grain outlet 5-2 and the light grain outlet 5-3 are all arranged on the specific gravity box cover 5-4, and the specific gravity box cover 5-4 also has an air outlet hood 5-5, and the air outlet hood 5-5 leads to the atmosphere; wherein, the specific gravity platform 5 also includes a filter material member 5-6, and the filter material member 5-6 is arranged at the air outlet hood 5-5;

[0067] The impurity conveying vibration trough 6 is provided with an impurity inlet 6-1 and an impurity outlet 6-2, and a small impurity outlet 3-4 and a light grain outlet 5-3 lead to the impurity inlet 6-1.

[0068] Blower 7, blower 7 is located below the specific gravity table 5, and the wind is directed to the specific gravity box cover 5-4,

[0069] The dust removal mechanism 8 is arranged on the machine body 1 and is connected with the dust outlet 4-3.

[0070] In the present embodiment, an impurity conveying vibration trough 6 is designed, through which the impurity conveying vibration trough 6 receives the impurities of smaller particles sent out from the small impurity outlet 3-4, and receives the relatively light impurities sent out from the light grain outlet 5-3. Considering that the impurities discharged from the specific gravity table 5 are widely distributed, the small impurity outlet 3-4 and the light grain outlet 5-3 need to be designed as wider long strips, so as to achieve the simultaneous delivery of more impurities, and the small impurity outlet 3-4 and the light grain outlet 5-3 are received by the long impurity conveying vibration trough 6. On the one hand, it can avoid the occurrence of piled materials in the impurity conveying vibration trough 6, and on the other hand, the discharging process is smooth and orderly, with the advantages of high delivery efficiency, and more convenient to receive sacks.

[0071] In this embodiment, the specific gravity table 5 requires the blower 7 to provide blowing air. Based on the fact that the wind screen 4 is for suction and the specific gravity table 5 is for blowing air, the ingenious design of this embodiment is to use the wind screen 4 of the equipment itself to suck away the dust generated by the specific gravity table 5. At the same time, the specific gravity table 5 is specially designed to have a specific gravity box cover 5-4. The specific gravity box cover 5-4 can collect the blowing air in the specific gravity table 5 and send it to the wind screen grain inlet 4-1 of the wind screen 4, thereby increasing the wind force for the wind screen 4, and well ensuring the stability of wind force utilization, thereby avoiding the wind force dispersion and not being able to be sent to the wind screen grain inlet 4-1 of the wind screen 4.

[0072] In addition, the density box cover 5-4 is designed to have an air outlet hood 5-5, and a filter material 5-6 is installed at the air outlet hood 5-5. The filter material 5-6 is a filter layer to play a filtering role. By using the filter material 5-6, the problem that the air suction volume of the wind screen 4 is small and the blowing volume of the density table 5 is large, and the two are not matched, can be well solved. At the same time, it is ensured that the blowing air discharged by the density table 5 is filtered to avoid the problem of dust. Because a large part of the wind force is separated by the wind screen 4, the required filtering can be met by using the filter material 5-6 as a filter layer. Compared with the separate bag dust removal filter for filtering the air outlet of the density table 5 in the prior art, the equipment structure is greatly simplified, the bag dust removal equipment is omitted, and a better effect can be achieved.

[0073] Among them, with respect to the filter material piece 5-6, it can also be designed that the filter material piece 5-6 has a frame, and a vibration motor is installed on the frame for automatically cleaning impurities or dust attached to the filter material.

[0074] In this embodiment, the specific gravity table 5 vibrates reciprocatingly, and the wind force of the blower 7 below acts on the grain layer on the specific gravity table 5, causing the grain to be suspended. After suspension, the light grains float up and the heavy grains sink. The reciprocating vibration of the specific gravity table 5 causes the lower layer of materials to crawl upward and to the right. Since the surface of the specific gravity table 5 is inclined, the light materials on its surface will slide down, and finally the grains are separated according to their weight, and all things lighter than grains, such as moldy grains, insect-eaten grains, shells, stems, leaves, etc., can be separated.

[0075] In this embodiment, the dust removal mechanism 8 can be installed at the dust outlet 4-3 of the wind screen 4 to collect the dust sent out of the wind screen 4. The entire device only needs this single dust removal mechanism 8, because the bag dust removal device is omitted at the specific gravity table 5 and replaced by the filter material 5-6, so the device structure is greatly simplified. The dust removal mechanism 8 can be designed as a cyclone dust removal method to meet the required dust removal and avoid dust discharge to pollute the surrounding environment. Because the structure is simplified, it also solves the problem of high transportation cost and large space occupied by the large size of the grain cleaner in the prior art.

[0076] Furthermore, the grain inlet box 2 includes a bucket body 2-1, which is arranged on the machine body 1 and has a bucket outlet 2-2 at the bottom.

[0077] The material distribution trough 2-3 is located below the bucket outlet 2-2, and the bottom of the material distribution trough 2-3 has a first slope 2-4 and a second slope 2-5, the first slope 2-4 is connected to the second slope 2-5 and the connected ends of the two are higher than the distant ends, wherein the slope widths of the first slope 2-4 and the second slope 2-5 gradually narrow from top to bottom.

[0078] In this embodiment, considering that the grain cleaning machine in the prior art is relatively large in size, especially in the horizontal space, which makes the occupied area relatively large, it is necessary to reduce the volume of more structures in the horizontal direction to reduce the occupied area. For the grain inlet box, if you want to achieve a better grain dispersing effect, the grain inlet box 2 needs a certain height. How to reduce the height of the grain inlet box and ensure the grain dispersing effect is a problem that needs to be solved. In order to save the height of the grain inlet box 2 and ensure the grain dispersing effect, the grain inlet box 2 is specially designed to evenly disperse the raw materials fed in. Among them, the screen box inlet 3-1 of the screen box 3 is a wider width, so the grain inlet box 2 is required to disperse the raw grain into a wider width. The raw grain sent is first received by the bucket body 2-1, on the one hand to avoid grain leakage, on the other hand, the raw grain falling from a certain height can also be buffered by the bucket body structure to avoid collision when falling and causing damage to the raw grain; the grain will then be sent to the distribution trough 2-3 for dispersion. On the other hand, this structure greatly reduces the height of the grain inlet box 2, and achieves better grain dispersing in a direction close to the horizontal. The bottom of the specific material distribution trough 2-3 is set as the first slope 2-4 and the second slope 2-5, forming a high slope with low sides in the middle, and the raw grain overflows from one side of the high slope and flows into the screen box 3 instead of flowing in through the bottom of the high slope. The advantage is that the middle connecting part of the first slope 2-4 and the second slope 2-5 serves as the highest point of the high slope, which can disperse the raw grain falling from the bucket outlet 2-2 of the bucket body 2-1. As the raw materials continue to increase, the uniformity of the falling materials can also be guaranteed.

[0079] Among them, the structure in which the slope width of the first slope 2-4 and the second slope 2-5 gradually narrows from top to bottom can enable the raw materials to always partially fall into the screen box inlet 3-1 when sliding down the first slope 2-4 and the second slope 2-5, avoiding the problem that the raw materials cannot fall evenly into the screen box inlet 3-1 because the grain becomes less and less as they fall down the slope.

[0080] Furthermore, the feed trough 2-3 also has a fence 2-6.

[0081] A fence 2-6 is provided on one side and the bottom of the first slope 2-4.

[0082] The second slope 2-5 is provided with enclosures 2-6 on one side and at the bottom.

[0083] The other side of the first slope 2-4 and the other side of the second slope 2-5 lead to the screen box inlet 3-1.

[0084] The grain inlet box 2 also includes a middle baffle 2-7 and two inclined sill plates 2-8. The middle baffle 2-7 is arranged on one side of the connection between the first slope body 2-4 and the second slope body 2-5, close to the screen box inlet 3-1. One of the two inclined sill plates 2-8 is located between the first slope body 2-4 and the screen box inlet 3-1, and the other is located between the second slope body 2-5 and the screen box inlet 3-1.

[0085] In this embodiment, the other side of the first slope 2-4 and the other side of the second slope 2-5 are designed to lead to the screen box entrance 3-1 together. The raw materials will enter the screen box 3 from the other side of the first slope 2-4 and the second slope 2-5, that is, near the screen box entrance 3-1. The structure of dropping materials from one side of the high slope rather than the bottom of the high slope well ensures the uniformity of bulk materials. Even if the box entrance 3-1 is very wide, the thickness of the raw grain can be guaranteed to be uniform in width, so that the final production capacity is greatly improved. Compared with the single-mouth single-point, double-mouth double-point dropping and bulk plate dropping methods of the dropping hopper in the prior art, the problem of reduced production capacity due to unreasonable bulk area is avoided; compared with the bulk plate dropping method, the height space is greatly reduced, a compact design is achieved, and transportation costs are saved; compared with the vibration plate dropping and double-mouth double-point dropping methods in the prior art, it also has the advantages of occupying less space and not requiring additional power supply for the vibration motor.

[0086] In this embodiment, in order to further improve the uniformity of grain falling from the material distribution trough 2-3, a middle baffle 2-7 and two inclined sill plates 2-8 are designed. The middle baffle 2-7 and the two inclined sill plates 2-8 are both located near the screen box inlet 3-1 of the first slope 2-4 and the second slope 2-5, and the middle baffle 2-7 is in the middle position, and the two inclined sill plates 2-8 are located on both sides of the middle baffle 2-7. During operation, the material falling from the bucket 2-1 will first be sent to the middle baffle 2-7. At the beginning, the grain is the most, so the middle baffle 2-7 needs to be designed to have a higher height to avoid excessive grain overflowing from the middle baffle 2-7 at the beginning, and then the inclined sill plates 2-8 on both sides of the middle baffle 2-7 are used to block and overflow the material, so that the grain can be accurately dispersed when it is sent to the screen box 3 with a wider width, and this material-leveling method also has the structural advantage of small height space occupation.

[0087] Furthermore, the middle baffle 2-7 is adjustable in height, and the inclined sill plate 2-8 is hinged at one end close to the middle baffle 2-7, and the height of the end away from the middle baffle 2-7 is adjustable.

[0088] In this embodiment, in order to ensure that different types of grains can be dropped well, the middle baffle 2-7 is designed to be adjustable in height, which can be achieved by means of an oblong hole with a locking screw or other methods. By adjusting the middle baffle 2-7, the purpose of uniform dropping of different types of grains can be achieved, and one end of the middle baffle 2-7 is hinged, and the height of the end away from the middle baffle 2-7 is adjustable. After the height is adjusted, it is locked by a bolt. The inclined threshold plate 2-8 can also be designed to adjust the angle. The adjustable threshold plate can adjust the overflow of grain, which is suitable for more scenarios, especially different types of grains can ensure uniform dropping of grains. Further, the screen box 3 can include

[0089] Screen box 3-5, screen box 3-5 is hingedly arranged on the machine body 1,

[0090] The elastic member 3-6 is arranged on the machine body 1 and supports the screen box 3-5.

[0091] The vibration source 3-7 is arranged on the screen box 3-5.

[0092] The first screen 3-8 and the second screen 3-9 are both slidably arranged in the screen box 3-5, and the interior of the screen box 3-5 is divided into an upper space 3-10, a middle space 3-11 and a lower space 3-12. The screen box inlet 3-1 leads to the upper space 3-10, and the material in the upper space 3-10 leads to the large impurity outlet 3-2. The screen box inlet 3-1 and the large impurity outlet 3-2 are respectively located on both sides of the upper space 3-10, and the material in the middle space 3-11 leads to the main grain outlet 3-3. The bottom of the lower space 3-12 is inclined and inclined so that the material leads to the small impurity outlet 3-4.

[0093] The transverse large miscellaneous channel 3-13 is located at one side of the upper space 3-10, and the large miscellaneous outlet 3-2 leads to the transverse large miscellaneous channel 3-13.

[0094] The vertical large miscellaneous channel 3-14 is located at one side of the machine body 1, and the transverse large miscellaneous channel 3-13 is arranged to be inclined downward and leads to the vertical large miscellaneous channel 3-14.

[0095] In this embodiment, considering that the screen is mostly replaced by taking it out upwards, or pulling it out in front or behind the grain discharge direction, in order to leave space for the screen frame to be smoothly pulled out, the space above, in front of, and behind the screen box cannot be designed with other components, making the equipment structure loose and not compact, and the transportation cost is also high. After improvement, the design is that when the screen is replaced, it is pulled out from both sides perpendicular to the grain discharge box direction, and the space above, in front of, and behind the screen box can be freely used, realizing an overall compact device and reducing transportation costs.

[0096] In this embodiment, in order to realize the separation of raw grain into large impurities, staple food and small impurities, the screen box 3-5 is designed to be hinged on the machine body 1, and the end is supported by the elastic member 3-6, and the screen box 3-5 is driven to vibrate by the vibration source 3-7, and the vibration source 3-7 can be a vibration motor, which can provide the power of vibration. The mesh size of the first screen 3-8 is larger than the mesh size of the second screen 3-9, and the interior of the screen box 3-5 is divided into an upper space 3-10, a middle space 3-11 and a lower space 3-12. Finally, the material in the middle space 3-11 leads to the staple food outlet 3-3 to deliver the staple food, and the bottom of the lower space 3-12 is inclined and inclined to allow the material to lead to the small impurity outlet 3-4, and the small impurity outlet 3-4 can deliver smaller impurities, and the large impurity outlet 3-2 leads to the horizontal large impurity channel 3-13, and then enters the vertical large impurity channel 3-14 to deliver larger impurities, and the staple food is delivered from the staple food outlet 3-3 of the middle space.

[0097] Furthermore, the inner wall of the screen box body 3-5 has a guide groove 3-15, both ends of the first screen 3-8 and both ends of the second screen 3-9 have inclined guide bars 3-16, and the screen box 3 also includes an inclined guide rail 3-17, the inclined guide rail 3-17 is arranged in the guide groove 3-15, the inclined guide bar 3-16 is slidably arranged on the inclined guide rail 3-17, and the inclined guide rail 3-17 presses the inclined guide bar 3-16 in the guide groove 3-15.

[0098] In this embodiment, in order to achieve more convenient maintenance and replacement of the first screen 3-8 and the second screen 3-9, the first screen 3-8 and the second screen 3-9 are designed to slide in the guide groove 3-15 through the inclined guide bars 3-16 thereon to achieve sliding and pulling out, and the inclined guide bars 3-16 are supported by the inclined guide rails 3-17, and both sides are supported to form an inverted trapezoidal structure. The trapezoid is wedge-shaped, and the wedge-shaped track can achieve better self-locking and clamping. The inclined guide rails 3-17 press the inclined guide bars 3-16 in the guide groove 3-15, thereby ensuring that the first screen 3-8 and the second screen 3-9 will not shake relative to the screen box 3-5 during the vibration process, but will stably vibrate together with the screen box 3-5.

[0099] Further, the inclined guide bar 3-16 is slidably arranged on the inclined guide rail 3-17 along the length direction of the guide groove 3-15, and the inclined guide rail 3-17 is slidably arranged along the depth direction of the guide groove 3-15.

[0100] The screen box 3 also includes a compression spring 3-18, one end of the compression spring 3-18 acts on the inclined guide rail 3-17, and the other end acts on the screen box body 3-5, providing the inclined guide rail 3-17 with a force to press the inclined guide bar 3-16 in the guide groove 3-15.

[0101] The first screen 3-8 and the second screen 3-9 both have a handle 3-19, and the screen box 3 also includes a stretching piece 3-20, which is arranged at an end of the inclined guide bar 3-16 away from the handle 3-19, and the stretching piece 3-20 has an expanding slope 3-21. After pulling the handle 3-19, the expanding slope 3-21 pushes the inclined guide rail 3-17 to compress the clamping spring 3-18, so that the inclined guide rail 3-17 cancels the clamping of the inclined guide bar 3-16, wherein the expanding slope 3-21 is higher in the middle and lower at both ends.

[0102] In this embodiment, the inclined guide rail 3-17 is also a movable component, which is slidably arranged along the depth direction of the guide groove 3-15. The inclined guide rail 3-17 is pressed by the compression spring 3-18, thereby supporting the inclined guide bars 3-16 of the first screen 3-8 and the second screen 3-9. The force is converted in direction through the inclined surface, so that the first screen 3-8 and the second screen 3-9 are pressed upward in the guide groove 3-15 to be locked. The inclined surface can also provide a sufficiently large pressure as a locking force, thereby avoiding unnecessary shaking.

[0103] In order to make it easy to pull the first screen 3-8 and the second screen 3-9 out of the guide groove 3-15, a handle 3-19 is provided on it, and a propping piece 3-20 is provided at the other end. When the first screen 3-8 and the second screen 3-9 are installed in the locking position in the guide groove 3-15, the propping piece 3-20 is located outside the guide groove 3-15, and the propping inclined surface 3-21 is high in the middle and low at both ends to form a wedge-shaped structure at both ends. When the handle 3-19 is pulled to pull the first screen 3-8 and the second screen 3-9 to move outward, , the opening member 3-20 will open the inclined guide rail 3-17 which is the movable part. At this time, the inclined guide bar 3-16 will move down together with the first screen 3-8 and the second screen 3-9 to cancel the contact with the guide groove 3-15 at the end. At this time, the resistance of the handle 3-19 pulling the first screen 3-8 and the second screen 3-9 out of the guide groove 3-15 will be reduced, thereby achieving pulling them out. The simple structure ensures the convenience of pulling out, and also ensures the stability of the first screen 3-8 and the second screen 3-9 when they are locked in the guide groove 3-15.

[0104] Furthermore, the wind screen 4 includes a wind screen channel 4-4, the cross-sectional area of ​​the wind screen channel 4-4 gradually narrows from top to bottom, the wind screen grain inlet 4-1 is located on one side of the wind screen channel 4-4, the wind screen grain air outlet 4-2 is located at the bottom of the wind screen channel 4-4, the dust outlet 4-3 is located at the top of the wind screen channel 4-4, and the dust removal mechanism 8 is two parallel cyclone dust collectors 8-1, and the two cyclone dust collectors 8-1 share one fan.

[0105] In this embodiment, the wind screen channel 4-4 is designed to have a gradually narrowing cross-sectional area from top to bottom, which can ensure that the wind speed in the wind screen channel 4-4 gradually slows down, thereby ensuring that the food can fall by gravity, and at the same time, the lighter dust and rods can be sucked away. The lighter dust and rods are then sent to the subsequently connected dust removal mechanism 8 through the channel for collection. The dust removal mechanism 8 can be designed as two parallel cyclone dust collectors 8-1, sharing one fan. The wind from the two cyclone dust collectors is gathered into one fan for inhalation and discharge, thereby reducing the size of the equipment while ensuring suction, thereby achieving the purpose of preventing debris and dust from flying into the external environment.

[0106] Furthermore, the bottom of the lower space 3-12 shares a box body with the upper part of the specific gravity box cover 5-4, so that the upper part of the specific gravity box cover 5-4 is inclined, and the filter material 5-6 is located on one side of the wind screen channel 4-4.

[0107] The specific gravity table 5 also includes a vibration table 5-7, which is located in the specific gravity box cover 5-4. Ventilation holes 5-8 are distributed on the vibration table 5-7.

[0108] The air outlet of the blower 7 is provided with an air guide plate 7-1, which faces the air screen grain air outlet 4-2 so that the air sent out by the blower 7 passes through the ventilation hole 5-8 and then partially flows into the air screen grain air outlet 4-2, and partially is filtered by the filter material 5-6 and then sent out from the air outlet hood 5-5.

[0109] The screen box 3 also includes a vertical small debris channel 3-22, and the small debris outlet 3-4 leads to the vertical small debris channel 3-22.

[0110] The specific gravity platform 5 also includes a vertical final grain channel 5-9 and a vertical light grain channel 5-10. The final grain outlet 5-2 leads to the vertical final grain channel 5-9, and the light grain outlet 5-3 leads to the vertical light grain channel 5-10.

[0111] The impurity conveying vibration trough 6 has a plurality of trough bodies 6-3, each of which has an impurity inlet 6-1 and an impurity outlet 6-2, and a vertical small impurity channel 3-22 and a vertical light impurity channel 5-10 lead to the impurity inlets 6-1 of different trough bodies 6-3.

[0112] In this embodiment, the bottom of the lower space 3-12 and the upper part of the specific gravity box cover 5-4 share a box body, which can save space and simplify the structure on the one hand, and the upper part of the specific gravity box cover 5-4 is inclined to have two functions, one is to realize that the wind force sent to the specific gravity table 5 by the blower 7 is collected to the wind screen channel 4-4, providing suitable wind force for the wind screen to perform wind screening, and on the other hand, it can also be used as the screen bottom of the screen box 3 as a receiving hopper to realize that the small impurity outlet 3-4 sends out small particles of impurities, and then slides into the impurity inlet 6-1 of the impurity conveying vibration trough 6. The ingenious structure improves the integration of the equipment well, and the structure is simple, the overall height is reduced, and the space is fully utilized.

[0113] In this embodiment, the vertical small impurity channel 3-22 is connected to the small impurity outlet 3-4 to send out the small impurities received, the vertical final grain channel 5-9 is connected to the final grain outlet 5-2 to send out the final grain that has been screened, and the vertical light grain channel 5-10 is connected to the light grain outlet 5-3 to send out the relatively light impurities received. Among them, the conveying vibration trough 6 has a plurality of trough bodies 6-3, which respectively send out the impurities collected by the vertical small impurity channel 3-22 and the vertical light grain channel 5-10 to avoid mixing.

[0114] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grain cleaning machine, characterized in that: include Body (1), a grain inlet box (2), wherein the grain inlet box (2) is arranged on the machine body (1), A screen box (3) is arranged beside the grain inlet box (2), and has a screen box inlet (3-1), a large impurity outlet (3-2), a main grain outlet (3-3) and a small impurity outlet (3-4); the grain inlet box (2) leads to the screen box inlet (3-1). an air screen (4), the air screen (4) being located on one side of the screen box (3) and having an air screen grain inlet (4-1), an air screen grain air outlet (4-2) and a dust outlet (4-3), A specific gravity platform (5), the specific gravity platform (5) being located below the wind screen (4), and having a specific gravity inlet (5-1), a final grain outlet (5-2) and a light grain outlet (5-3), wherein the wind screen grain air outlet (4-2) is in communication with the specific gravity inlet (5-1); The specific gravity platform (5) further comprises a specific gravity box cover (5-4); the specific gravity inlet (5-1), the final grain outlet (5-2) and the light grain outlet (5-3) are all arranged on the specific gravity box cover (5-4); the specific gravity box cover (5-4) further comprises an air outlet hood (5-5); the air outlet hood (5-5) leads to the atmosphere; the specific gravity platform (5) further comprises a filter material element (5-6); the filter material element (5-6) is arranged at the air outlet hood (5-5); It also includes a blower (7), wherein the blower (7) is located below the specific gravity platform (5), and wind power is directed into the specific gravity box cover (5-4); The grain inlet box (2) comprises a material distribution trough (2-3), and the bottom of the material distribution trough (2-3) has a first slope (2-4) and a second slope (2-5). The grain inlet box (2) further comprises a middle baffle (2-7) and two inclined sill plates (2-8), wherein the middle baffle plate (2-7) is arranged on a side of a connection between the first slope body (2-4) and the second slope body (2-5) close to the screen box inlet (3-1), and one of the two inclined sill plates (2-8) is located between the first slope body (2-4) and the screen box inlet (3-1), and the other is located between the second slope body (2-5) and the screen box inlet (3-1). The middle baffle (2-7) can be adjusted in height.

2. A grain cleaning machine according to claim 1, characterized in that: Also includes An impurity conveying vibration trough (6), the impurity conveying vibration trough (6) having an impurity inlet (6-1) and an impurity outlet (6-2), the small impurity outlet (3-4) and the light grain outlet (5-3) leading to the impurity inlet (6-1), A dust removal mechanism (8), wherein the dust removal mechanism (8) is arranged on the machine body (1) and is connected to the dust outlet (4-3).

3. A grain cleaning machine according to claim 1, characterized in that: The grain inlet box (2) comprises a bucket body (2-1), the bucket body (2-1) is arranged on the machine body (1), and has a bucket outlet (2-2) at the bottom, and the material distribution trough (2-3) is located below the bucket outlet (2-2); the first slope body (2-4) is connected to the second slope body (2-5), and the connected end of the two is higher than the separated ends, wherein the slope widths of the first slope body (2-4) and the second slope body (2-5) are gradually narrowed from top to bottom.

4. A grain cleaning machine according to claim 3, characterized in that: The material distribution trough (2-3) further comprises a fence (2-6). The enclosure (2-6) is provided on one side and the bottom of the first slope (2-4). The enclosure (2-6) is provided on one side and the bottom of the second slope (2-5). The other side of the first slope (2-4) and the other side of the second slope (2-5) both lead to the screen box inlet (3-1).

5. A grain cleaning machine according to claim 4, characterized in that: The inclined sill plate (2-8) is hingedly arranged at one end close to the middle baffle plate (2-7), and the height of the end away from the middle baffle plate (2-7) is adjustable.

6. A grain cleaning machine according to claim 2, characterized in that: The screen box (3) comprises A screen box (3-5), wherein the screen box (3-5) is hingedly arranged on the machine body (1), an elastic member (3-6), wherein the elastic member (3-6) is arranged on the machine body (1) and supports the screen box body (3-5), A vibration source (3-7) is arranged on the screen box (3-5), A first screen (3-8) and a second screen (3-9), wherein the first screen (3-8) and the second screen (3-9) are both slidably arranged in the screen box (3-5), and the interior of the screen box (3-5) is divided into an upper space (3-10), a middle space (3-11), and a lower space (3-12); the screen box inlet (3-1) leads to the upper space (3-10), and materials in the upper space (3-10) lead to the large impurity outlet (3-2); the screen box inlet (3-1) and the large impurity outlet (3-2) are respectively located on both sides of the upper space (3-10), and materials in the middle space (3-11) lead to the main grain outlet (3-3); the bottom of the lower space (3-12) is inclined and inclined so that the materials lead to the small impurity outlet (3-4); a transverse large miscellaneous channel (3-13), wherein the transverse large miscellaneous channel (3-13) is located on one side of the upper space (3-10), and the large miscellaneous outlet (3-2) leads to the transverse large miscellaneous channel (3-13), A vertical large impurity channel (3-14), the vertical large impurity channel (3-14) is located on one side of the machine body (1), and the transverse large impurity channel (3-13) is arranged to be inclined downward and leads to the vertical large impurity channel (3-14) in an inclined downward manner.

7. A grain cleaning machine according to claim 6, characterized in that: The inner wall of the screen box (3-5) has a guide groove (3-15), and both ends of the first screen (3-8) and both ends of the second screen (3-9) have inclined guide bars (3-16). The screen box (3) further comprises an inclined guide rail (3-17), wherein the inclined guide rail (3-17) is arranged in the guide groove (3-15), the inclined guide bar (3-16) is slidably arranged on the inclined guide rail (3-17), and the inclined guide rail (3-17) presses the inclined guide bar (3-16) in the guide groove (3-15).

8. A grain cleaning machine according to claim 7, characterized in that: The inclined guide bar (3-16) is slidably arranged on the inclined guide rail (3-17) along the length direction of the guide groove (3-15), and the inclined guide rail (3-17) is slidably arranged along the depth direction of the guide groove (3-15). The screen box (3) further comprises a compression spring (3-18), one end of the compression spring (3-18) acting on the inclined guide rail (3-17) and the other end acting on the screen box body (3-5), providing the inclined guide rail (3-17) with a force for pressing the inclined guide bar (3-16) in the guide groove (3-15). The first screen (3-8) and the second screen (3-9) both have a handle (3-19). The screen box (3) further comprises a spreading piece (3-20). The spreading piece (3-20) is arranged at an end of the inclined guide bar (3-16) away from the handle (3-19). The spreading piece (3-20) has a spreading inclined surface (3-21). When the handle (3-19) is pulled, the spreading inclined surface (3-21) pushes the inclined guide rail (3-17) to achieve compression of the compression spring (3-18), so that the inclined guide rail (3-17) stops pressing the inclined guide bar (3-16). The expansion inclined surface (3-21) is high in the middle and low at both ends.

9. A grain cleaning machine according to claim 6, characterized in that: The wind screen (4) comprises a wind screen channel (4-4), the cross-sectional area of ​​the wind screen channel (4-4) gradually narrows from top to bottom, the wind screen grain inlet (4-1) is located at one side of the wind screen channel (4-4), the wind screen grain air outlet (4-2) is located at the bottom of the wind screen channel (4-4), and the dust outlet (4-3) is located at the top of the wind screen channel (4-4). The dust removal mechanism (8) is two cyclone dust collectors (8-1) connected in parallel, and the two cyclone dust collectors (8-1) share a fan.

10. A grain cleaning machine according to claim 9, characterized in that: The bottom of the lower space (3-12) and the upper part of the specific gravity box cover (5-4) share a box body, so that the upper inner part of the specific gravity box cover (5-4) is inclined, and the filter material element (5-6) is located on one side of the wind screen channel (4-4). The specific gravity table (5) further comprises a vibration table (5-7), wherein the vibration table (5-7) is located inside the specific gravity box cover (5-4), and ventilation holes (5-8) are distributed on the vibration table (5-7). The blower (7) has an air guide plate (7-1) at its air outlet, the air guide plate (7-1) facing the grain screen air outlet (4-2) so that the air sent out by the blower (7) passes through the ventilation hole (5-8) and then partially flows into the grain screen air outlet (4-2), and partially is filtered by the filter material element (5-6) and then sent out from the air outlet hood (5-5). The screen box (3) further comprises a vertical small debris channel (3-22), and the small debris outlet (3-4) leads to the vertical small debris channel (3-22). The specific gravity table (5) further comprises a vertical final grain passage (5-9) and a vertical light grain passage (5-10), the final grain outlet (5-2) leads to the vertical final grain passage (5-9), and the light grain outlet (5-3) leads to the vertical light grain passage (5-10). The impurity conveying vibration trough (6) has a plurality of trough bodies (6-3), each of the trough bodies (6-3) has the impurity inlet (6-1) and the impurity outlet (6-2), and the vertical small impurity channel (3-22) and the vertical light impurity grain channel (5-10) lead to the impurity inlets (6-1) of different trough bodies (6-3).

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