Special carbon powder purification and selection equipment for firework black powder

By designing a multi-layer material separation and adsorption treatment equipment for fireworks black gunpowder carbon powder, combined with wind energy grading, the problems of low material utilization and complex processing procedures in existing resource recycling equipment are solved, and efficient removal of miscellaneous and Graded recycling enhances the value of materials.

CN222428597UActive Publication Date: 2025-02-07CHANGSHA JIAN AGRI TECH DEV CO LTD
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Patent Information

Application Number
CN202421082314.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-17
Publication Date
2025-02-07
Estimated Expiration
2034-05-17

AI Technical Summary

Technical Problem

When existing resource recycling equipment processes materials, it is difficult for them to fully screen out impurities, resulting in low material utilization, complex processing procedures and high cost, which cannot effectively improve the value of materials.

Method used

A special carbon powder purification selection equipment for fireworks black gunpowder is designed, including the first and second loading units, material separation units, adsorption units and sorting units. Through multi-layer material separation and adsorption treatment, combined with wind energy grading, it realizes Efficient material removal and grading recycling.

Benefits of technology

Through the use of this equipment, the impurity content of the materials is significantly reduced, and the materials are distributed and processed at different levels, which improves the utilization rate and value of the recycled materials, breaks the limitations of the existing technology, and has good promotion and application prospects.

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Abstract

The utility model relates to the technical field of detection equipment, and discloses firework black powder special carbon powder purification and selection equipment which is characterized in that a first feeding unit is used for transmitting a to-be-treated object to a first recovery module, and a second feeding unit is used for transmitting a treated object treated by the first recovery module to a second recovery module; the first recycling module used for dehumidification, rust removal and impurity removal comprises a material distribution unit, an adsorption unit and a discharging unit, the top of the material distribution unit is in butt joint with the conveying end of the first recycling module, the bottom of the material distribution unit is in butt joint with the top of the adsorption unit, and a plurality of adsorption cavities capable of adsorbing impurities are formed in the adsorption unit. The second recovery module for light and heavy separation comprises a sorting unit and a recovery unit, the top of the sorting unit is in butt joint with the conveying end of the second feeding unit, and the recovery unit is arranged below the sorting unit; the material distributing device is reasonable in structural arrangement, good in material distributing effect and high in production efficiency.
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Description

Technical Field

[0001] The present application relates to the field of resource recovery equipment, and in particular to a carbon powder purification and selection device for fireworks black powder. Background Art

[0002] Resource recovery, also known as reuse or recycling, refers to the collection of materials that were originally to be discarded, decomposition and re-production into new products, or the collection of used products, cleaning, processing and then selling them. Compared with traditional garbage disposal, recycling can save resources and reduce greenhouse gas emissions. Resource recovery can prevent the waste of resources with potential utilization value and reduce raw material consumption, thereby reducing: energy consumption, air pollution (from garbage incineration) and water pollution (from landfill). In the existing resource recovery equipment, due to the complex material recovery process, the equipment structure and function involved are relatively simple, and the general treatment during the recovery process is relatively simple, and the impurities in the material cannot be fully screened out, and the recycled materials cannot be well graded and utilized, resulting in low utilization of the recovered materials, and the value of the recovered materials is not equal to the cost of the complex processing process, so it cannot be well promoted and applied. In view of the limitations of the prior art, this application proposes a special carbon powder purification and selection equipment for fireworks black powder. Summary of the invention

[0003] The purpose of the present application is to provide a kind of charcoal powder purification and selection equipment specially used for fireworks black powder, so as to improve the defects of resource recovery equipment in the prior art, such as limited application and low utilization value of recovered materials.

[0004] To achieve the above-mentioned purpose, in the first aspect, the present application provides a charcoal powder purification and selection device for fireworks black powder, comprising a base and a first feeding unit, a first recovery module, a second feeding unit and a second recovery module arranged on the base, wherein the first feeding unit is used to transmit the material to be processed to the first recovery module for dehumidification, rust removal and impurity removal, and the second feeding unit is used to transmit the processed material processed by the first recovery module to the second recovery module for light and heavy separation;

[0005] The first recovery module includes a material distribution unit for distributing materials to be processed, an adsorption unit for adsorbing impurities in the materials to be processed, and a material discharge unit. The top of the material distribution unit is connected to the conveying end of the first recovery module, and the bottom of the material distribution unit is connected to the top of the adsorption unit. A plurality of adsorption cavities capable of adsorbing impurities are provided inside the adsorption unit, and the bottom of the adsorption unit is connected to the feeding end of the second loading unit.

[0006] The second recycling module includes a sorting unit for sorting the objects to be processed and a recycling unit for recycling materials. The top of the sorting unit is connected to the conveying end of the second feeding unit, and the recycling unit is arranged below the sorting unit.

[0007] In a possible embodiment, the first loading unit is arranged at an angle, and a first feeding bin for feeding is provided at the lower end of the first loading unit, and a first lowering bin is provided at the upper end of the first loading unit, and the top opening of the first lowering bin is connected to the conveying end of the first loading unit, and the bottom opening of the first lowering bin is connected to the top opening of the dividing unit.

[0008] In a possible embodiment, the second loading unit is arranged at an angle, a second feeding bin is provided at the lower end of the second loading unit, the second feeding bin is docked with the unloading unit, a second unloading bin is provided at the upper end of the second loading unit, a top opening of the second unloading bin is docked with the conveying end of the second loading unit, and a bottom opening of the second unloading bin is docked with the sorting unit.

[0009] In a possible embodiment, a distributor is provided on the top of the distribution unit, and a distribution inlet bin is provided on the top of the distributor for docking with the bottom opening of the first lower bin, and a plurality of distribution outlet bins are provided at the bottom of the distributor, and the bottom of the distribution inlet bin is docked with the lower tops of the plurality of distribution outlet bins, and the bottom of the distribution outlet bin is docked with the top of the adsorption chamber.

[0010] In a possible embodiment, a plurality of adsorption layers are provided in the adsorption unit, a plurality of the adsorption cavities are provided in each of the adsorption layers, the adsorption cavities in adjacent upper and lower layers are butted end to end, the top of the material discharge unit is butted against the adsorption cavity provided at the bottom, and the bottom of the material discharge unit is butted against the top opening of the second feed bin.

[0011] In a possible implementation manner, the plurality of adsorption layers are respectively used to adsorb impurities in the object to be processed, and each of the adsorption layers is detachably disposed in the adsorption unit.

[0012] In a possible implementation, the second recovery module further includes a wind energy unit, and the wind energy unit is disposed on a side of the sorting unit close to the second lower bin, and an air supply end of the wind energy unit is connected to the interior of the sorting unit.

[0013] In a possible implementation manner, the top of the sorting unit is closed, and the sorting unit is configured to be in a funnel shape with a large upper portion and a small lower portion.

[0014] In a possible implementation, a plurality of sorting bins are provided at the bottom of the sorting unit, upper openings of the sorting bins are communicated with the inner cavity of the sorting unit, and the sorting bins are sequentially arranged in the wind supply direction of the wind energy unit.

[0015] In a possible implementation, a plurality of recovery chambers are provided in the recovery unit, and different recovery chambers are respectively connected to the lower openings of the sorting bin, and the lower opening of the sorting bin is connected to the upper opening of the sorting bin, and the recovery chamber is used to receive materials of different levels diverted by the sorting bin.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present application provides a charcoal powder purification and selection equipment specially used for fireworks black powder, wherein a material to be processed is transmitted to a dividing unit through a first feeding unit, and the dividing unit divides the material to be processed into a plurality of areas and enters an adsorption unit, and the adsorption unit adsorbs and removes impurities from the material to be processed, and then the material after impurity removal is transmitted to a sorting unit through a second feeding unit, and the sorting unit performs graded treatment on the material after impurity removal, and finally the material is graded and recovered, and a batch of materials is divided into areas for adsorption treatment through the dividing unit, and small-batch adsorption treatment is conducive to more complete impurity removal of the material, and the impurity content of the material recovered by the impurity removal of the present application is low, and the material can be allocated for treatment according to different levels, and the impurity-removed material that does not meet the standards can also be recycled for a second time, thereby improving the utilization rate of the recycled material, thereby improving the value of the recycled material, and the equipment of the present application breaks the limitations of the prior art and has a good prospect for promotion and application.

[0018] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 A front view of a carbon powder purification and selection device for fireworks black powder provided in an embodiment of the present application is shown;

[0021] Figure 2 Shows Figure 1 A cross-sectional view of a device for purifying and selecting carbon powder specially used for fireworks black powder.

[0022] Description of reference numerals:

[0023] 100, first loading unit; 110, first feeding bin; 120, first unloading bin;

[0024] 200, first recovery module; 210, material distribution unit; 211, material distributor; 212, material distribution inlet bin; 213, material distribution outlet bin; 220, adsorption unit; 221, adsorption chamber; 222, adsorption layer; 230, unloading unit;

[0025] 300, second loading unit; 310, second feeding bin; 320, second unloading bin;

[0026] 400, second recovery module; 410, sorting unit; 411, sorting bin; 420, recovery unit; 421, recovery chamber; 430, wind energy unit. DETAILED DESCRIPTION

[0027] The specific implementation of the embodiment of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present application, and is not used to limit the embodiment of the present application.

[0028] In the embodiments of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments. Example

[0032] See also Figure 1 and Figure 2 This embodiment provides a charcoal powder purification and selection device specially used for fireworks black powder, which can be used for liquefaction of sputum and enrichment treatment after liquefaction.

[0033] The present embodiment provides a special carbon powder purification and selection equipment for fireworks black powder, including a base and a first feeding unit 100, a first recovery module 200, a second feeding unit 300 and a second recovery module 400 arranged on the base. The first feeding unit 100 is used to transmit the material to be processed to the first recovery module 200, and the second feeding unit 300 is used to transmit the processed material processed by the first recovery module 200 to the second recovery module 400; the base can be fixed on the application site, the first feeding unit 100 and the second feeding unit 300 can use belt drive or other alternative methods to transmit materials, the first recovery module 200 can remove impurities in the material by magnetic attraction or other alternative methods, and the second recovery module 400 can be driven by wind energy to grade and separate the materials according to their weight.

[0034] The first recovery module 200 includes a material dividing unit 210 for dividing the material to be treated, an adsorption unit 220 for adsorbing impurities in the material to be treated, and a material unloading unit 230. The top of the material dividing unit 210 is connected to the conveying end of the first recovery module 200, and the bottom of the material dividing unit 210 is connected to the top of the adsorption unit 220. A plurality of adsorption chambers 221 for adsorbing impurities are arranged inside the adsorption unit 220, and the bottom of the adsorption unit 220 is connected to the feeding end of the second loading unit 300. The material dividing unit 210 is made of stainless steel to prevent the material from being adsorbed inside the material dividing unit 210. A batch of materials is divided into partitions for adsorption treatment through the material dividing unit 210. Small batch adsorption treatment is conducive to more complete impurity removal of the material. Different adsorption chambers can respectively perform dehumidification, rust removal and impurity removal on the material.

[0035] The second recycling module 400 includes a sorting unit 410 for sorting the objects to be processed and a recycling unit 420 for recycling the materials. The top of the sorting unit 410 is connected to the conveying end of the second feeding unit 300, and the recycling unit 420 is arranged below the sorting unit 410; the objects to be processed are transmitted to the dividing unit 210 through the first feeding unit 100, and the dividing unit 210 divides the objects to be processed into multiple areas and enters the adsorption unit 220, and the adsorption unit 220 adsorbs and removes impurities on the objects to be processed, and then the materials after impurity removal are transmitted to the sorting unit 410 through the second feeding unit 300, and the sorting unit 410 performs graded treatment on the materials after impurity removal, and finally the materials are graded and recycled. The impurity content of the materials recycled by the impurity removal of this application is low, and the materials can be allocated and processed according to different levels. The impurity-removed materials that do not meet the standards can also be recycled for a second time, thereby improving the utilization rate of the recycled materials, thereby improving the value of the recycled materials. The equipment of this application breaks the limitations of the prior art and has a good prospect for promotion and application.

[0036] In one possible embodiment, the first loading unit 100 is tilted, and a first feeding bin 110 for feeding is provided at the lower end of the first loading unit 100, and a first lowering bin 120 is provided at the upper end of the first loading unit 100. The top opening of the first lowering bin 120 is connected to the conveying end of the first loading unit 100, and the bottom opening of the first lowering bin 120 is connected to the top opening of the dividing unit 210; the first loading unit 100 can transfer materials by belt friction or gear rack transmission, and a material transmission platform is provided on the first loading unit 100. The materials to be processed are fed in an orderly manner from the first feeding bin 110, and under the transmission action of the first loading unit 100, the materials in the first feeding bin 110 are transmitted to the position of the first lowering bin 120.

[0037] In one possible embodiment, the second loading unit 300 is tilted, a second feeding bin 310 is provided at the lower end of the second loading unit 300, the second feeding bin 310 is docked with the unloading unit 230, a second unloading bin 320 is provided at the upper end of the second loading unit 300, the top opening of the second unloading bin 320 is docked with the conveying end of the second loading unit 300, and the bottom opening of the second unloading bin 320 is docked with the sorting unit 410; the second loading unit 300 can transfer materials by belt friction or gear rack transmission, and a material transmission platform is provided on the second loading unit 300, the material after adsorption treatment is output in an orderly manner from the second feeding bin 310, and under the transmission action of the second loading unit 300, the material in the second feeding bin 310 is transmitted to the second unloading bin 320.

[0038] In one possible embodiment, a divider 211 is provided on the top of the dividing unit 210, and a divider inlet bin 212 is provided on the top of the divider 211 for docking with the bottom opening of the first lower bin 120, and a plurality of divider outlet bins 213 are provided at the bottom of the divider 211, and the bottom of the divider inlet bin 212 is docked with the lower tops of the plurality of divider outlet bins 213, and the bottom of the divider outlet bin 213 is docked with the top of the adsorption chamber 221; the sizes of the divider outlet bins 213 are the same, and the number of the divider outlet bins 213 is generally two or four, and the plurality of divider outlet bins 213 are symmetrically or arranged in an array, which is conducive to evenly dividing the processed materials into each adsorption chamber 221, so as to achieve the same level of processing of the materials in each chamber.

[0039] In one possible embodiment, a plurality of adsorption layers 222 are provided in the adsorption unit 220, and a plurality of adsorption chambers 221 are provided in each adsorption layer 222. The adsorption chambers 221 of adjacent upper and lower layers are butted end to end, the top of the unloading unit 230 is butted with the adsorption chamber 221 provided at the bottom, and the bottom of the unloading unit 230 is butted with the top opening of the second feed bin 310; the plurality of adsorption layers 222 can adsorb the material in a graded manner, the upper adsorption layer 222 can perform preliminary processing on the material, and the lower adsorption layer 222 can perform fine processing on the material. The multi-layer adsorption processing can effectively avoid the problem of incomplete processing of impurities in the material, and does not require multiple transmission adsorption processing, which can effectively improve the material adsorption processing efficiency.

[0040] In one possible embodiment, multiple adsorption layers 222 are respectively used to adsorb impurities in the object to be processed, and each adsorption layer 222 is detachably arranged in the adsorption unit 220; a hatch that can be selectively opened or closed can be opened on the side of the adsorption layer 222. After the adsorption layer 222 works for a certain period of time, the hatch can be opened to process the impurities adsorbed in the adsorption layer 222, so as to improve the ability of the adsorption layer 222 to effectively adsorb impurities in the material and improve the maintenance efficiency of the adsorption chamber 221.

[0041] In one possible embodiment, the second recycling module 400 also includes a wind energy unit 430, which is arranged on the side of the second lower material bin 320 close to the sorting unit 410, and the air supply end of the wind energy unit 430 is connected to the interior of the sorting unit 410; the wind energy unit 430 can use a blower or other replaceable functional modules, and the wind energy unit 430 is used to grade and sort the materials. No other new impurities will be added, and no other impacts will be generated on the materials. It has good environmental protection and energy saving properties. The wind energy unit 430 provides wind energy to the materials coming in from the second lower material bin 320 as soon as possible, and can comprehensively sort the processed materials. The sorting fineness can be adjusted by different levels of wind force.

[0042] In one possible embodiment, the top of the sorting unit 410 is closed, and the closed sorting unit 410 can effectively prevent interference from the external environment. The sorting unit 410 is configured to be a funnel with a large upper portion and a small lower portion. The funnel-shaped sorting unit 410 can effectively introduce the wind-classified materials into the recovery unit 420; a plurality of sorting bins 411 are provided at the bottom of the sorting unit 410, and the upper openings of the sorting bins 411 are connected to the inner cavity of the sorting unit 410, and the sorting bins 411 are sequentially arranged on the air supply side of the wind energy unit 430. Upward, the number of sorting bins 411 may depend on the grading level, and multiple sorting bins 411 respectively introduce materials of corresponding levels into the recovery chamber 421, and the sorting bins 411 are arranged in a straight line in the wind supply direction of the wind energy unit 430. The sorting bins 411 close to the wind energy unit 430 collect materials with the highest accuracy, and the sorting bins 411 far away from the wind energy unit 430 collect materials with lower accuracy. The materials corresponding to the sorting bins 411 farthest from the wind energy unit 430 can be returned to the first loading unit 100 through the transmission channel for recycling processing.

[0043] In one possible embodiment, a plurality of recovery chambers 421 are provided in the recovery unit 420, and different recovery chambers 421 are respectively connected to the lower opening of the sorting bin 411, and the lower opening of the sorting bin 411 is connected to the upper opening of the sorting bin 411. The recovery chamber 421 is used to receive materials of different levels diverted by the sorting bin 411. Materials recovered by different recovery chambers 421 can be processed for different purposes. Materials with high precision received by the recovery chamber 421 can be directly used as pure materials, and materials with low precision received by the recovery chamber 421 can be processed for secondary use. The equipment of the present application can also perform multiple sorting processes to achieve higher grading accuracy requirements.

[0044] The above describes in detail the optional implementation methods of the embodiments of the present application in combination with the accompanying drawings. However, the embodiments of the present application are not limited to the specific details in the above implementation methods. Within the technical concept of the embodiments of the present application, various simple modifications can be made to the technical scheme of the embodiments of the present application, and these simple modifications all belong to the protection scope of the embodiments of the present application.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present application will not further describe various possible combinations.

[0046] In addition, the various implementation methods of the embodiments of the present application may be arbitrarily combined, and as long as they do not violate the ideas of the embodiments of the present application, they should also be regarded as the contents disclosed in the embodiments of the present application.

Claims

1. A carbon powder purification and selection equipment for fireworks black powder, characterized in that: It comprises a base and a first loading unit, a first recovery module, a second loading unit and a second recovery module arranged on the base, wherein the first loading unit is used to transmit the object to be processed to the first recovery module for dehumidification, rust removal and impurity removal, and the second loading unit is used to transmit the processed object processed by the first recovery module to the second recovery module for light and heavy separation; The first recovery module includes a material distribution unit for distributing materials to be processed, an adsorption unit for adsorbing impurities in the materials to be processed, and a material discharge unit. The top of the material distribution unit is connected to the conveying end of the first recovery module, and the bottom of the material distribution unit is connected to the top of the adsorption unit. A plurality of adsorption cavities capable of adsorbing impurities are provided inside the adsorption unit, and the bottom of the adsorption unit is connected to the feeding end of the second loading unit. The second recycling module includes a sorting unit for sorting the objects to be processed and a recycling unit for recycling materials. The top of the sorting unit is connected to the conveying end of the second feeding unit, and the recycling unit is arranged below the sorting unit.

2. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 1, characterized in that: The first loading unit is arranged at an angle, and a first feeding bin for feeding is provided at the lower end of the first loading unit, and a first lowering bin is provided at the upper end of the first loading unit. The top opening of the first lowering bin is connected to the conveying end of the first loading unit, and the bottom opening of the first lowering bin is connected to the top opening of the distributing unit.

3. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 2, characterized in that: The second loading unit is arranged at an angle, and a second feeding bin is provided at the lower end of the second loading unit, and the second feeding bin is connected to the unloading unit. A second unloading bin is provided at the upper end of the second loading unit, and the top opening of the second unloading bin is connected to the conveying end of the second loading unit, and the bottom opening of the second unloading bin is connected to the sorting unit.

4. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 3 is characterized in that: A material distributor is provided on the top of the material distributor, and a material distributor inlet bin is provided on the top of the material distributor for docking with the bottom opening of the first lower material bin, and a plurality of material distributor outlet bins are provided at the bottom of the material distributor, and the bottom of the material distributor inlet bin is docked with the lower tops of the plurality of material distributor outlet bins, and the bottom of the material distributor outlet bin is docked with the top of the adsorption chamber.

5. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 4 is characterized in that: The adsorption unit is provided with a plurality of adsorption layers, each of the adsorption layers is provided with a plurality of the adsorption cavities, the adsorption cavities of adjacent upper and lower layers are butted end to end, the top of the unloading unit is butted with the adsorption cavity provided at the bottom, and the bottom of the unloading unit is butted with the top opening of the second feed bin.

6. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 5, characterized in that: The plurality of adsorption layers are respectively used for adsorbing impurities in the object to be processed, and each of the adsorption layers is detachably arranged in the adsorption unit.

7. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 4, characterized in that: The second recovery module also includes a wind energy unit, which is arranged on a side of the sorting unit close to the second lower bin, and an air supply end of the wind energy unit is connected to the interior of the sorting unit.

8. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 7, characterized in that: The top of the sorting unit is closed, and the sorting unit is configured to be in a funnel shape with a large upper portion and a small lower portion.

9. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 8, characterized in that: A plurality of sorting bins are arranged at the bottom of the sorting unit, the upper openings of the sorting bins are communicated with the inner cavity of the sorting unit, and the sorting bins are sequentially arranged in the wind supply direction of the wind energy unit.

10. The equipment for purifying and selecting carbon powder for fireworks black powder according to claim 9, characterized in that: A plurality of recovery chambers are provided in the recovery unit, and different recovery chambers are respectively connected to the lower openings of the sorting bin, and the lower opening of the sorting bin is communicated with the upper opening of the sorting bin. The recovery chambers are used to receive materials of different levels diverted by the sorting bin.