Winnowing separation bin and hay feed cleaning system

Abstract

The invention relates to the technical field of agricultural separation equipment, in particular to a winnowing separation bin and a hay feed cleaning system.The winnowing separation bin is provided with an obliquely-arranged side wall, so that airflow entering the bin is decelerated firstly and then accelerated, and large materials and materials with the small wind area are different from thin film materials in wind area and inertia, so that the hay feed is separated from the large materials. The large materials and the materials with the small wind area are collected at the discharging opening in the bin bottom, the film materials are discharged through the air outlet, separation of the film materials and straw is completed, the separation efficiency is improved, and the content of mulching films in smashed straw feed is reduced when the device is applied to the field of feed separation. According to the hay feed cleaning system, light materials separated by the winnowing separation bin are fed into the feeding device or the light material treatment device to be further treated and collected, the stability of the separation effect can be improved, waste of the materials is avoided, meanwhile, mulching films are purified to reach the recycling standard, waste is turned into wealth, and two purposes are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural separation equipment, and particularly relates to a pneumatic separation bin and a hay feed cleaning system. Background Art

[0002] After the harvest of crops, the remaining parts are mostly disposed of by returning straw to the field or burning. In fact, the remaining parts of crops can be reused. Taking sunflowers as an example, the sunflower heads and sunflower straws are rich in nutrients. The sunflower heads contain 7% - 9% crude protein, 6.5% - 10.5% crude fat, and 2.4% - 3% pectin. The sunflower straws also have relatively high nutritional value. They are all high-quality raw materials for animal feed, especially suitable for feeding herbivorous animals. The existing feeding methods mainly include: 1 Feeding with green feed; 2 Mixing cooked green feed with other feeds for feeding; 3 After drying and crushing, form feed by mixing with other feeds for feeding.

[0003] 4 Feeding directly after drying and crushing (hay feed), etc.

[0004] Drying and crushing the sunflower heads and sunflower straws to make dry feed is an effective utilization method. However, in the process of collecting the harvested sunflower heads and sunflower straws, it is inevitable for general farmers to mix in other attachments, soil and stones, plastic films, etc. Due to centralized stacking, if these mixed impurities cannot be well separated during the processing, it will seriously affect the recycling and reuse of sunflower heads and sunflower straws. The situation of other crops is generally the same.

[0005] Among the impurities contained in the feed, plastic films have a great impact on the health of ruminant livestock because they affect the rumination process. Therefore, special attention should be paid to removing them when making hay feed. One existing removal method is to manually pick them out when harvesting straws manually, and the removal efficiency is low.

[0006] At the same time, due to the development of modern agriculture, the usage amount of plastic films in the process of crop planting is increasing, and the usage area is becoming wider and wider. However, the development of plastic film recycling, sorting, and cleaning technologies has been lagging behind the development speed of plastic film usage. Every year, a large amount of crop straws that could have been used as feed are unable to be utilized because they are mixed with plastic films, and are forced to be abandoned in the fields, unable to be processed, seriously polluting the environment and damaging arable land.

[0007] Therefore, it is necessary to develop and design a separation device that can not only improve the efficiency of removing plastic films from straws, reduce the content of plastic films in the crushed hay straw feed, so that the straws can be effectively utilized, but also quickly remove the impurities in the plastic films, making the recycling and utilization of plastic films a reality, and promoting the development of agricultural modernization. Summary of the Invention

[0008] An embodiment of the present invention provides a pneumatic separation bin and a hay feed cleaning system, which are used to solve the problem of low operation efficiency in separating films from bulk materials in the prior art.

[0009] In a first aspect, an embodiment of the present invention provides a pneumatic separation bin, comprising: A hopper-shaped bin body, the bin body is provided with an air inlet, a discharge port and an air outlet; The bin body includes a first side wall and a second side wall that is inclined downward toward the inside of the bin body. The air inlet is provided on one side of the second side wall, the discharge port is arranged at the lowest position of the bin body, and the air outlet is provided on one side of the first side wall; When the airflow carrying materials enters the bin body from the air inlet, the heavy materials slide down along the inner wall of the second side wall and gather at the discharge port, and the airflow carries the light materials and escapes from the air outlet, thereby realizing the separation of heavy and light materials.

[0010] In a possible implementation manner, the bin body further includes a third side wall, the lower edge of the third side wall is fixedly connected to the upper edge of the first side wall, and the upper end of the third side wall is inclined outward from the bin body; The air outlet is arranged on the third side wall.

[0011] In a possible implementation manner, the pneumatic separation bin further includes: a spoiler; The spoiler extends into the bin body, and the plate surface of the spoiler faces the air inlet; When the airflow entering from the air inlet flows through the spoiler, the spoiler hinders the flow of the airflow, so that the flow path of the airflow is bent to accelerate the separation of heavy and light materials.

[0012] In a possible implementation manner, the pneumatic separation bin further includes: an adjusting device, the adjusting device is hinged to the upper surface of the bin body; The spoiler is slidably connected to the adjusting device, an opening is provided on the upper surface of the bin body, and the spoiler extends into the bin body through the opening on the upper surface of the bin body.

[0013] In a second aspect, an embodiment of the present invention provides a hay feed cleaning system, the hay feed cleaning system includes: a separation device, an air lock, a cyclone and a feeding device, or, the hay feed cleaning system includes: a separation device, an air lock, a cyclone, a feeding device and a light material processing device; The separation device includes a first fan and the pneumatic separation bin as described in the first aspect or any possible implementation manner of the first aspect; The air outlet of the first fan is communicated with the air inlet of the air separation bin body, and the air outlet of the air separation bin body is communicated with the inlet of the cyclone; or, the air inlet of the first fan is communicated with the air outlet of the air separation bin body, and the air outlet of the first fan is communicated with the inlet of the cyclone; The feed inlet of the airtight feeder is communicated with the discharge outlet of the bin body; The discharge outlet of the cyclone extends above the light material processing device or above one side of the feeding device close to the feeding side, and the air inlet of the first fan or the air inlet of the air separation bin extends above the side of the feeding device far from the feeding side; When the first fan is started, a negative pressure is generated at the air inlet of the first fan, so as to send the materials sucked by the feeding device into the interior of the air separation bin body. The heavy materials collected at the discharge outlet of the air separation bin body are discharged through the airtight feeder, and the light materials discharged from the discharge outlet of the cyclone are sent to the light material processing device or the feeding device.

[0014] In a possible implementation manner, the feeding device includes: a first feeding screen; The discharge outlet of the cyclone extends above one side of the first feeding screen close to the feeding side, and the air inlet of the first fan or the air inlet of the air separation bin extends above the side of the first feeding screen far from the feeding side.

[0015] In a possible implementation manner, the hay feed cleaning system further includes: a second fan, and the air inlet of the second fan extends above the first feeding screen; The air inlet of the second fan is closer to the feeding side of the first feeding screen than the air inlet of the first fan or the air inlet of the air separation bin, and a net or a blocking device is provided at the air outlet of the second fan; When the air flow containing the film blown out from the air outlet of the second fan flows through the blocking device, the film is collected by the blocking device.

[0016] In a possible implementation manner, the feeding device includes: a first feeding screen; the light material processing device includes: a second feeding screen; The discharge outlet of the cyclone extends above the second feeding screen, and the air inlet of the first fan or the air inlet of the air separation bin extends above the side of the first feeding screen far from the feeding side.

[0017] In a possible implementation manner, the hay feed cleaning system further includes: a second fan, the air inlet of the second fan extends above the second feeding screen, and a net or a blocking device is provided at the air outlet of the second fan; When the airflow containing the film blown out from the air outlet of the second fan flows through the blocking device, the film is collected by the blocking device.

[0018] In a possible implementation manner, the hay feed cleaning system further includes: a collecting device, which is arranged below the discharge port of the airtight feeder and the transmission end of the second feeding sieve.

[0019] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows: The embodiments of the present invention disclose a pneumatic separation bin, which is provided with an inclined wall. After the airflow carrying the materials enters the bin, it first decelerates and then accelerates. By using the differences in the windward area and inertia between large materials and materials with a smaller windward area and film-like materials, the large materials and materials with a smaller windward area are collected at the discharge port at the bottom of the bin and discharged, and the film-like materials are discharged from the air outlet, completing the separation and cleaning of straw and film materials, improving the separation efficiency. When applied to the field of straw feed separation, the content of plastic film in the crushed dry straw feed is reduced. At the same time, because the wind suction force is used to lift the materials, large-density sundries that are heavier than straw and affect the feed quality or even harm the health of livestock, such as soil stones, small iron blocks, iron wires, iron nails, etc., are left on the feeding device and discharged. In this way, very clean straw feed can be obtained. At the same time, the content of sundries in the plastic film discharged from the air outlet of the pneumatic separation bin is greatly reduced.

[0020] The cleaning system of the embodiments of the present invention sends the plastic film and individual small and light materials separated by the pneumatic separation bin into the feeding sieve or feeding trough again to screen out small straw sundries and dust, etc. At the same time, the second fan is used to suck and collect the plastic film to a fixed place, and relatively clean plastic film can be obtained, and the quality meets the standards for the recycling and utilization of agricultural residual films. The recycling rate of agricultural residual films can be greatly improved.

[0021] In this way, two recycled products, high-quality feed and clean plastic film, can be produced in a set of production processes, greatly improving agricultural benefits, avoiding waste of straw resources and improving the recycling rate of agricultural residual films, and can effectively promote the smooth development of modern agriculture.

[0022] The hay feed cleaning system of the embodiments of the present invention sends the light materials separated by the pneumatic separation bin into the pneumatic separation bin again for collection, which can improve the stability and reliability of the separation effect, and can obtain excellent and clean straw feed and renewable agricultural residual films, and can also avoid waste of materials. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is the schematic diagram of the first hay feed cleaning system provided by the embodiment of the present invention; Figure 2 is the schematic diagram of the second hay feed cleaning system provided by the embodiment of the present invention; Figure 3 is the schematic diagram of the third hay feed cleaning system provided by the embodiment of the present invention; Figure 4 is the schematic diagram of the fourth hay feed cleaning system provided by the embodiment of the present invention; Figure 5 is the physical external view of the air separation bin provided by the embodiment of the present invention; Figure 6 is the front view of the physical object of the hay feed cleaning system provided by the embodiment of the present invention; Figure 7 is the rear view of the physical object of the hay feed cleaning system provided by the embodiment of the present invention; Figure 8 is the hay feed with plastic film produced by other equipment provided by the embodiment of the present invention; Figure 9 is the hay feed produced by the equipment of the present invention provided by the embodiment of the present invention.

[0025] In the figure: The first side wall 101; The second side wall 102; The third side wall 103; The spoiler 201; The adjusting device 202; The first fan 301; The air lock 401; The cyclone 501; The first feeding screen 602; The second feeding screen 601; The second fan 701; The blocking device 702; The collecting device 801. Embodiment

[0026] In the following description, specific details such as specific system structures and technologies are proposed for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will be described in detail through specific embodiments in conjunction with the accompanying drawings.

[0028] The following will describe in detail the embodiments of the present invention. This example is implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0029] A first aspect of an embodiment of the present invention provides a pneumatic separation bin, including: A hopper-shaped bin body, the bin body is provided with an air inlet, a discharge port, and an air outlet; The bin body includes a first side wall 101 and a second side wall 102 that is inclined downward toward the inside of the bin body. The air inlet is provided on one side of the second side wall 102, the discharge port is arranged at the lowest position of the bin body, and the air outlet is provided on one side of the first side wall 101; When the airflow carrying materials enters the bin body from the air inlet, the heavy materials slide down along the inner wall of the second side wall 102 and gather at the discharge port, and the airflow carries the light materials and escapes from the air outlet, thereby realizing the separation of heavy and light materials.

[0030] Exemplarily, as Figures 1-4 shown, the main body of the pneumatic separation bin in the figure: the bin body is a hopper-shaped cavity with a trapezoidal or triangular longitudinal section, which is wider at the top and narrower at the bottom, and is provided with three ports, namely an air inlet, a discharge port, and an air outlet. Among them, both the air inlet and the air outlet are close to the upper part of the separation bin. The side wall on one side of the air inlet forms a certain angle with the vertical direction, and the lower end of this side wall inclines toward the inner space of the cavity. The side wall on the side of the air outlet is vertically arranged, and the discharge port is located at the lowest position of the cavity.

[0031] When using the pneumatic separation bin, the airflow carrying materials is sent in from the air inlet. After the airflow enters the bin, since the cross-sectional area of the flow gradually increases and then flows out from the air outlet, its flow velocity experiences a process of changing from fast to slow and then from slow to fast.

[0032] Part of the large pieces of materials slide down along the pipeline and the inclined wall, and the other part moves forward and freely falls, and finally gathers at the discharge port.

[0033] Film materials and individual small pieces of materials fall less due to the larger ratio of the windward surface to gravity and small inertia. When they are close to the side of the air outlet and do not touch the vertical wall, the air flow speed suddenly accelerates, forming a lifting force, and are discharged from the air outlet.

[0034] After the above process, film materials and individual small pieces of materials are discharged from the air outlet, and large pieces of materials and most of the small pieces of materials are collected at the discharge port. When applied to the separation of dry feed crushed from sunflower discs or sunflower stalks, the sunflower disc blocks or sunflower stalk segments are collected at the discharge port due to their large size, and individual small broken particles and mixed film are discharged from the air outlet, thereby achieving feed purification and removing the film.

[0035] The implementation mode of the present invention is provided with an inclined wall so that the airflow entering the bin is first decelerated and then accelerated. By utilizing the difference in wind receiving area and inertia between heavy materials and film materials, the straw materials are collected at the discharge port at the bottom of the bin, and the film materials are discharged from the air outlet to complete the separation of the film materials, thereby improving the separation efficiency. When applied to the field of straw feed separation, the content of ground film in the crushed straw feed is reduced. At the same time, since the system device uses wind power to lift the material, other debris such as stones, dirt, lumps, iron blocks, iron wires, nails, etc. that affect the quality of the feed and even the health of the livestock are left on the feeding device and discharged, and clean straw feed can be obtained. For the same reason, after the above-mentioned sorting process, the debris in the ground film such as residual roots, dust and stones are also more thoroughly cleaned.

[0036] In a possible implementation, the warehouse body further includes a third side wall 103, the lower edge of the third side wall 103 is fixedly connected to the upper edge of the first side wall 101, and the upper end of the third side wall 103 is inclined toward the outside of the warehouse body; The air outlet is disposed on the third side wall 103 .

[0037] In a possible implementation, the wind separation bin further includes: a spoiler 201; The spoiler 201 extends toward the interior of the chamber, and the plate surface of the spoiler 201 faces the air inlet; When the airflow entering from the air inlet flows through the spoiler 201, the spoiler 201 blocks the flow of the airflow, so that the flow path of the airflow is bent to accelerate the separation of light and heavy materials.

[0038] In a possible implementation, the wind separation bin further includes: an adjustment device 202, the adjustment device 202 being hinged to the upper surface of the bin body; The spoiler 201 is slidably connected to the adjusting device 202. An opening is provided on the upper surface of the bin body, and the spoiler 201 extends into the interior of the bin body through the opening on the upper surface of the bin body.

[0039] Exemplarily, as shown in FIG. 2, in some application scenarios, a spoiler 201 is provided on one side close to the air inlet. After the airflow carrying the material enters the interior of the bin body, in addition to experiencing the processes of changing from fast to slow and from slow to fast, the flow path of the airflow undergoes an obvious bend.

[0040] A part of the large pieces of material slides down along the inclined wall, and another part moves forward. After colliding with the spoiler 201, it accelerates downward and is thus collected at the discharge port.

[0041] Due to the large windward area and small inertia of the film, after collision, a lifting effect is generated due to the curved path of the airflow, and it gradually flows towards the air outlet. Finally, it is discharged from the air outlet.

[0042] As Figure 2 shown, in some application scenarios, an inclined wall that inclines outward from the bin is provided above the vertical wall. Due to the existence of this inclined wall, the rate of change from slow to fast of the airflow is smaller than that in the case of a pure vertical wall. In other words, there is a process when it becomes faster, which is beneficial for the film to generate a relatively lasting thrust.

[0043] On the other hand, while the film is moving forward, it is also falling. When the film falls on the inclined wall above the vertical wall, due to the pushing action of the airflow, it is more likely to be pushed towards the air outlet.

[0044] In other scenarios, during actual use, individual small pieces of material may also escape from the air separation bin along with the airflow, resulting in waste of resources. For this reason, the spoiler 201 is slidably arranged on the adjusting device 202. One end of the adjusting device 202 is hinged to the upper surface of the bin body. The lower end of the spoiler 201 extends into the bin through the narrow slit provided in the bin towards the position away from the air inlet. When it is necessary to adjust the function of the spoiler 201, the extended length of the spoiler 201 can be adjusted, and the hinged angle of the adjusting device 202 can also be adjusted. Thus, the effect of reducing the escape rate of small pieces of material in the material can be achieved. After adjusting the position, the spoiler 201 and the adjusting device 202 can be fixed at the predetermined position through locking measures.

[0045] For example, when there are more small pieces of material in the material discharged from the air outlet, at this time, the length extending into the bin should be increased or the angle between the spoiler 201 and the top plate of the bin in the air inlet direction should be decreased to improve the separation effect.

[0046] Second aspect, an embodiment of the present invention provides a hay feed cleaning system, the hay feed cleaning system comprising: a separation device, an air lock 401, a cyclone 501, and a feeding device; or, the hay feed cleaning system comprising: a separation device, an air lock 401, a cyclone 501, a feeding device, and a light material processing device; The separation device includes a first fan 301 and an air separation bin as described in the first aspect or any possible implementation manner of the first aspect; The air outlet of the first fan 301 is communicated with the air inlet of the air separation bin body, and the air outlet of the air separation bin body is communicated with the inlet of the cyclone 501; or, the air inlet of the first fan 301 is communicated with the air outlet of the air separation bin body, and the air outlet of the first fan 301 is communicated with the inlet of the cyclone 501; The feed inlet of the air lock 401 is communicated with the discharge port of the bin body; The discharge port of the cyclone 501 extends above the light material processing device or above one side of the feeding device close to the feeding side, and the air inlet of the first fan 301 or the air inlet of the air separation bin extends above one side of the feeding device away from the feeding side; When the first fan 301 is started, a negative pressure is generated at the air inlet of the first fan 301, so as to suck the materials from the feeding device into the interior of the air separation bin body. The heavy materials collected at the discharge port of the air separation bin body are discharged through the air lock 401, and the light materials discharged from the discharge port of the cyclone 501 are sent to the light material processing device or the feeding device.

[0047] Exemplarily, the separation effect of the air separation bin has a certain degree of uncertainty, thus affecting the separation effect. For example, individual small straw materials escape from the air outlet of the separation bin due to the influence of their postures, positions or speeds when entering the bin, resulting in material waste.

[0048] Therefore, when applying the air separation bin in the embodiment of the present invention, the materials discharged from the air outlet are sent back to the feeding channel again.

[0049] To achieve the above effects, there are two feasible ways for the system in the embodiment of the present invention, which are to communicate the air inlet of the fan with the air outlet of the air separation bin and to communicate the air outlet of the fan with the air inlet of the air separation bin respectively.

[0050] Among them, Figure 3 The former way is shown, Figure 4 The latter way is shown.

[0051] An airtight feeder 401 is provided at the discharge port of the air separation bin. The collected materials are collected by the airtight feeder 401 and finally discharged as target materials to the collection device 801, which can be a cloth bag, a sieve, a conveyor belt, or the like.

[0052] For the former method, the air outlet of the fan is connected to the cyclone 501. The film and individual small pieces of materials entrained by the air flow are discharged through the lower end of the cyclone 501, while the relatively clean air flow is discharged through the air outlet above the cyclone 501.

[0053] For the latter method, the air outlet of the air separation bin is connected to the cyclone 501. The film and individual small pieces of materials entrained by the air flow are discharged through the lower end of the cyclone 501, while the relatively clean air flow is discharged through the air outlet above the cyclone 501.

[0054] Below the lower end of the cyclone 501 is a feeding device. The materials discharged from the lower end of the cyclone 501 are pushed forward together with the original materials on the feeding device and sent to the rear end of the feeding device. The feeding device can be a conveyor belt, a conveyor sieve, or a trough.

[0055] A suction pipe is provided at the end of the feeding device. The materials are sucked by the air flow generated by the fan and sent into the interior of the air separation bin.

[0056] Through the above-mentioned repeated process, the small broken particles escaping with the plastic film can be recollected. This not only solves the problem of unclean separated plastic film but also avoids waste of resources.

[0057] The system according to the embodiment of the present invention sends the materials separated by the air separation bin back into the interior of the air separation bin for separation and collection again, which can improve the stability of the separation effect, avoid waste of materials, and enhance the separation effect.

[0058] In a possible implementation manner, the feeding device includes: a first feeding sieve 602; The discharge port of the cyclone 501 extends above one side of the first feeding sieve 602 close to the feeding side, and the air inlet of the first fan 301 or the air inlet of the air separation bin extends above one side of the first feeding sieve 602 far from the feeding side.

[0059] In a possible implementation manner, the hay feed cleaning system further includes: a second fan 701, and the air inlet of the second fan 701 extends above the first feeding sieve 602; The air inlet of the second fan 701 is closer to the feeding side of the first feeding sieve 602 than the air inlet of the first fan 301 or the air inlet of the air separation bin, and a net or a blocking device 702 is provided at the air outlet of the second fan 701; When the airflow containing the film blown out from the air outlet of the second fan 701 flows through the blocking device 702, the film is collected by the blocking device 702.

[0060] In a possible implementation manner, the feeding device includes: a first feeding sieve 602; the light material processing device includes: a second feeding sieve 601; The discharge port of the cyclone 501 extends above the second feeding sieve 601, and the air inlet of the first fan 301 or the air inlet of the air separation bin extends above one side of the first feeding sieve 602 away from the feeding side.

[0061] In a possible implementation manner, the hay feed cleaning system further includes: a second fan 701, the air inlet of the second fan 701 extends above the second feeding sieve 601, and a net or a blocking device 702 is provided at the air outlet of the second fan 701; When the airflow containing the film blown out from the air outlet of the second fan 701 flows through the blocking device 702, the film is collected by the blocking device 702.

[0062] In a possible implementation manner, the hay feed cleaning system further includes: a collecting device 801, and the collecting device 801 is arranged below the discharge port of the air lock 401 and the transmission end of the second feeding sieve 601.

[0063] Exemplarily, the preferred form of the feeding device is a conveyor belt or a feeding sieve. When using a feeding sieve, it can screen out sand and debris in some materials during transmission.

[0064] Such as Figure 1 , in some application scenarios, only one feeding device is provided. The film-like materials discharged from the cyclone 501 are discharged onto the conveying device and fall on top of the incoming materials. After running for a period of time, the number of accumulated films increases. At this time, the accumulated films can be sorted out and removed.

[0065] In order to clean the film in time, in Figure 1 the system with only one feeding device shown, a second fan 701 is provided, which forms the form shown in Figure 2 . The second fan 701 is arranged at the front end of the air suction port of the first fan 301 and is specifically used to suck film-like materials to prevent the accumulation of film-like materials. In order to better suck the film, the discharge port of the cyclone 501 can be made as close as possible to the air suction port of the second fan 701. Usually, a net or a blocking device 702 is provided at the air outlet of the second fan 701. The blocking device 702 can be, for example, a dust removal cloth bag, a net box, a baling machine, etc.

[0066] Such as Figure 3 and4 As shown, in some scenarios, there is a lightweight material handling device: a second feeding sieve 601. Among them, the second feeding sieve 601 is relatively short and is arranged above the first feeding sieve 602 and closer to the feeding side of the first feeding sieve 602 with respect to the air inlet of the first blower 301 or the air inlet of the air separation bin. The sieve holes of the second feeding sieve 601 are larger than those of the first feeding sieve 602. The film in the material discharged from below the cyclone 501 is intercepted by the second feeding sieve 601, while some small fragments fall onto the first feeding sieve 602 through the sieve holes, are conveyed to the rear end, and finally are sent back into the air separation bin for collection. In some other scenarios, the conveying end of the second feeding sieve 601 is arranged above the collection device 801 arranged below the airtight feeder 401. By setting the second feeding sieve 601 in this way, the film can be collected at the rear end of the second feeding sieve 601, while the recyclable straw fragments fall onto the first feeding sieve 602 or the collection device 801 for further collection and utilization.

[0067] When the second feeding sieve 601 is provided, the film materials can be collected, improving the separation efficiency of the air separation bin.

[0068] In some application scenarios, the system is also provided with a second blower 701. The air inlet of the second blower 701 extends above or to the end of the second feeding sieve 601. A net or a blocking device 702 is provided at the air outlet of the second blower 701. The blocking device 702 can be, for example, a dust removal cloth bag, a net box, a baler, etc.

[0069] When the second blower 701 is provided, the film-like materials can be collected, which can not only prevent the film from entering the air separation bin again and causing interference but also prevent the film from floating around, and can greatly improve the production efficiency. At the same time, since the plastic film collected by the second blower 701 is further purified, the originally unusable plastic film waste becomes a renewable resource.

[0070] Figure 5 It is a physical external view of the air separation bin provided by the invention implementation manner.

[0071] Figure 6 It is a front view of the physical object of the hay feed cleaning system provided by the invention implementation manner.

[0072] Figure 7 It is a rear view of the physical object of the hay feed cleaning system provided by the invention implementation manner.

[0073] Figure 8 It is the hay feed with plastic film produced by using other equipment provided by the invention implementation manner.

[0074] Figure 9 It is the hay feed produced by the equipment of the invention provided by the invention implementation manner.

[0075] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A pneumatic separation bin, characterized in that, Including: A hopper-shaped bin body, the bin body is provided with an air inlet, a discharge port and an air outlet; The bin body includes a first side wall (101) and a second side wall (102) with a lower end inclined towards the inside of the bin body. The air inlet is arranged on one side of the second side wall (102), the discharge port is arranged at the lowest position of the bin body, and the air outlet is arranged on one side of the first side wall (101); When the airflow carrying materials enters the bin body from the air inlet, the heavy materials slide down along the inner wall of the second side wall (102) and gather at the discharge port, and the airflow carries the light materials to escape from the air outlet, thereby realizing the separation of heavy and light materials.

2. The air separation bin according to claim 1, wherein, The bin body further includes a third side wall (103), the lower edge of the third side wall (103) is fixedly connected to the upper edge of the first side wall (101), and the upper end of the third side wall (103) is inclined towards the outside of the bin body; The air outlet is arranged on the third side wall (103).

3. The air separation bin according to claim 1, characterized in that, The air separation bin further includes: a spoiler (201); The spoiler (201) extends towards the inside of the bin body, and the plate surface of the spoiler (201) faces the air inlet; When the airflow entering from the air inlet flows through the spoiler (201), the spoiler (201) hinders the flow of the airflow, so that the flow path of the airflow is bent to accelerate the separation of heavy and light materials.

4. The air separation bin according to any one of claims 1 to 3, characterized in that, The air separation bin further includes: an adjusting device (202), and the adjusting device (202) is hinged to the upper surface of the bin body; The spoiler (201) is slidably connected to the adjusting device (202), an opening is provided on the upper surface of the bin body, and the spoiler (201) extends into the bin body through the opening on the upper surface of the bin body.

5. A hay feed cleaning system, characterized in that, The hay and forage cleaning system includes: a separation device, an air lock (401), a cyclone (501) and a feeding device, or, the hay and forage cleaning system includes: a separation device, an air lock (401), a cyclone (501), a feeding device and a light material processing device; The separation device includes a first fan (301) and the air separation bin according to any one of claims 1-4; The air outlet of the first fan (301) is communicated with the air inlet of the bin body of the air separation bin, and the air outlet of the bin body of the air separation bin is communicated with the inlet of the cyclone (501), or, the air inlet of the first fan (301) is communicated with the air outlet of the bin body of the air separation bin, and the outlet of the first fan (301) is communicated with the inlet of the cyclone (501); The feed inlet of the air lock (401) is communicated with the discharge port of the bin body; The discharge port of the cyclone (501) extends above the light material processing device or above one side of the feeding device close to the feeding side, and the air inlet of the first fan (301) or the air inlet of the air separation bin extends above one side of the feeding device far from the feeding side; When the first fan (301) is started, a negative pressure is generated at the air inlet of the first fan (301), so as to send the materials sucked from the feeding device into the interior of the air separation bin body. The heavy materials collected at the discharge port of the air separation bin body are discharged through the airtight feeder (401), and the light materials discharged from the discharge port of the cyclone (501) are sent to the light material treatment device or the feeding device.

6. The hay feed cleaning system according to claim 5, wherein The feeding device includes: a first feeding screen (602); The discharge port of the cyclone (501) extends above one side of the first feeding screen (602) close to the feeding side, and the air inlet of the first fan (301) or the air inlet of the air separation bin extends above one side of the first feeding screen (602) far from the feeding side.

7. The hay feed cleaning system according to claim 6, characterized in that, The hay feed cleaning system further includes: a second fan (701), and the air inlet of the second fan (701) extends above the first feeding screen (602); The air inlet of the second fan (701) is closer to the feeding side of the first feeding screen (602) than the air inlet of the first fan (301) or the air inlet of the air separation bin, and a net or a blocking device (702) is provided at the air outlet of the second fan (701); When the airflow containing the film blown out from the air outlet of the second fan (701) flows through the blocking device (702), the film is collected by the blocking device (702).

8. The hay feed cleaning system according to claim 5, wherein The feeding device includes: a first feeding screen (602); the light material treatment device includes: a second feeding screen (601); The discharge port of the cyclone (501) extends above the second feeding screen (601), and the air inlet of the first fan (301) or the air inlet of the air separation bin extends above one side of the first feeding screen (602) far from the feeding side.

9. The hay feed cleaning system according to claim 8, wherein The hay feed cleaning system further includes: a second fan (701), the air inlet of the second fan (701) extends above the second feeding screen (601), and a net or a blocking device (702) is provided at the air outlet of the second fan (701); When the airflow containing the film blown out from the air outlet of the second fan (701) flows through the blocking device (702), the film is collected by the blocking device (702).

10. The hay feed cleaning system according to claim 8, wherein, The hay feed cleaning system further includes: a collecting device (801), and the collecting device (801) is arranged below the discharge port of the airtight feeder (401) and the conveying end of the second feeding screen (601).

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