Circulating air feeding and sorting system

Abstract

The utility model discloses a circulating air feeding and sorting system, and belongs to the field of material sorting. According to the technical scheme, the device comprises a feeding pipeline, one end of the feeding pipeline is communicated with a first material distributing cavity, the lower end of the first material distributing cavity is communicated with a first material collecting opening, the upper end of the first material distributing cavity is communicated with a second material distributing cavity through a third pipeline, a circulating fan is arranged in the third pipeline, and an air outlet of the circulating fan faces the second material distributing cavity; the lower end of the second material distributing cavity communicates with a second material collecting opening, and the lower end of the second material distributing cavity communicates with the lower end of the first material distributing cavity through a circulating pipeline. By arranging the circulating pipeline, adhesion between mixed powdery materials is avoided, meanwhile, the proportion and the feeding quantity of the mixed powdery materials do not need to be controlled in the circulating separation and collection process, and the problem that the screening effect is greatly affected due to the fact that only quantitative light particle materials can be adsorbed through an adsorption roller is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of material sorting, in particular to a circulating air feeding material sorting system. Background Art

[0002] Resource utilization and recycling start with sorting. Common types of sorting include screening, heavy medium separation, magnetic separation, flotation, electrostatic separation, air separation, color sorting, etc. Among them, air separation technology, as a traditional sorting method, has been widely used in various solid waste treatment and resource recovery fields. The basic principle of air separation is to use air power to separate light materials and heavy materials under the action of airflow.

[0003] The existing sorting of powdered materials of different densities usually adopts a vibrating air separation device as disclosed in the patent document with application number 201822072750.6. After vibration screening, small particles are discharged from the powder particle outlet; large particles enter the light and heavy material stratification section, which is arranged in steps, and the light material is placed on the upper part of the material layer through the height difference and positive pressure airflow; then it enters the separation stage, and under the guidance of the positive pressure airflow and the negative pressure airflow, the light material moves to the upper left. At this time, the adsorption roller will generate a strong negative pressure airflow, so that the light material is adsorbed on the adsorption roller and rotates toward the light material outlet with the adsorption roller. When the light material runs to the wind shield ring, the negative pressure airflow disappears, and the light material falls and is discharged from the light material outlet; the heavy material has a larger bulk density and is less affected by the airflow, so it falls directly and is discharged from the heavy material outlet; thereby achieving the separation of powdered particles, light material and heavy material.

[0004] However, in the actual separation process, the staff cannot control the ratio of light particulate materials to heavy particulate materials in the mixed materials. If there are too many light particulate materials, the light particulate materials cannot be adsorbed anymore after being fully adsorbed on the adsorption drum. The remaining light particulate materials are mixed with the heavy particulate materials and enter the collection area of the heavy materials, which affects the sorting effect. Utility Model Content

[0005] The utility model addresses the problems in the prior art and provides a circulating air feeding and sorting system capable of large-scale screening, thereby solving the problem in the prior art that when large quantities of powdered materials are air-sorted, the adsorption roller can only adsorb a certain amount of lightweight granular materials, which has a significant impact on the screening effect.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A circulating air feeding and sorting system comprises a feeding pipe, one end of which is connected to a first material distribution chamber, the lower end of the first material distribution chamber is connected to a first material collection port, the upper end of the first material distribution chamber is connected to a second material distribution chamber through a third pipe, a circulating fan is provided in the third pipe, the air outlet of the circulating fan is directed toward the second material distribution chamber, the lower end of the second material distribution chamber is connected to the second material collection port, and the lower end of the second material distribution chamber is connected to the lower end of the first material distribution chamber through a circulating pipe. Through the provided circulation pipe, air and powdery materials with lower density can be circulated through the first distribution chamber-third pipe-second distribution chamber-circulation pipe under the action of the circulation fan. During the circulation process, a part of the powdery materials with lower density will always fall into the second collection port for collection, while the powdery materials with heavier density will directly fall into the first collection port for collection because they cannot enter the third pipe. During the operation, the circulating wind will impact the mixed materials just transported to the first distribution chamber through the feeding pipe, avoiding the adhesion between the mixed powdery materials. At the same time, there is no need to control the proportion of the mixed powdery materials and the amount of feeding in the process of circulation, separation and collection, avoiding the problem of using the adsorption roller to only adsorb a certain amount of light particulate materials, which has a greater impact on the screening effect.

[0008] Preferably, the circulation duct is tilted upward on the side adjacent to the first material distribution chamber, and the height of the connection between the circulation duct and the first material distribution chamber is lower than the height of the connection between the feed duct and the first material distribution chamber. By tilting the circulation duct upward, the collision contact between the circulating air in the first material distribution chamber and the mixed material conveyed by the feed duct is increased, further improving the sorting efficiency.

[0009] Preferably, the horizontal wind direction at the connection between the circulation duct and the first material distribution chamber is opposite to the horizontal wind direction at the connection between the feed duct and the first material distribution chamber. By arranging the connection between the circulation duct and the first material distribution chamber and the connection between the feed duct and the first material distribution chamber on opposite sides, the convection effect between the circulating air and the air transporting the material from the conveying duct when entering the first material distribution chamber can be improved, thereby further breaking up the mixed material.

[0010] Preferably, the first distribution cavity and the first collection port are connected through a first pipe, the second distribution cavity and the second collection port are connected through a second pipe, a first guide plate is provided between the first pipe and the first distribution cavity, and a second guide plate is provided between the second pipe and the second distribution cavity.

[0011] Preferably, the first guide plate and the second guide plate are both arranged to be tilted downward. By arranging the tilted guide plates, accumulation of materials in the first and second material distribution chambers can be avoided.

[0012] Preferably, one end of the circulation pipeline is connected to the first pipeline below the first guide plate, and the other end of the circulation pipeline is connected to the second material distribution cavity above the second guide plate.

[0013] Preferably, the circulating fan is a frequency-adjustable fan. By using a frequency-adjustable circulating fan, it is possible to easily change the circulating wind force for different mixed materials.

[0014] It can be seen from the above technical solutions that the advantages of the present invention are as follows: through the provided circulation pipe, air and powdered materials with lower density can be circulated through the first distribution chamber-third pipe-second distribution chamber-circulation pipe under the action of the circulation fan. During the circulation process, a portion of powdered materials with lower density will always fall into the second collection port for collection, while powdered materials with heavier density will directly fall into the first collection port for collection because they cannot enter the third pipe. During operation, the circulating wind will impact the mixed materials just transported to the first distribution chamber by the feeding pipe, thus avoiding adhesion between the mixed powdered materials. At the same time, there is no need to control the proportion of the mixed powdered materials and the amount of materials put in during the circulation, separation and collection process, thus avoiding the problem of using an adsorption roller that can only adsorb a certain amount of light particulate materials, which has a greater impact on the screening effect. By setting the circulation pipe to be tilted upward, the collision and contact of the circulating wind with the mixed materials transported by the feeding pipe in the first distribution chamber can be increased, further improving the sorting efficiency. By locating the connections between the circulation duct and the first distribution chamber and the feed duct and the first distribution chamber on opposite sides, the convection effect between the circulating air and the air transporting the material from the delivery duct upon entering the first distribution chamber is enhanced, further breaking up the mixed material. The provision of inclined guide plates prevents accumulation of material within the first and second distribution chambers. Using a frequency-adjustable circulation fan facilitates the adjustment of the circulating air force for different mixed materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of an embodiment of a specific implementation of the utility model.

[0017] Description of main reference numerals

[0018] In the figure: 1. Feeding pipe; 2. First material distribution chamber; 3. First material collection port; 4. Third pipe; 5. Second material distribution chamber; 6. Circulation fan; 7. Second material collection port; 8. Circulation pipe; 9. First guide plate; 10. Second guide plate; 11. First pipe; 12. Second pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0020] Example:

[0021] like Figure 1 As shown, a circulating air feeding and sorting system comprises a feeding pipe 1, one end of the feeding pipe 1 is connected with the first feeding chamber 2, the lower end of the first feeding chamber 2 is connected with a first collecting port 3, the upper end of the first feeding chamber 2 is connected with the second feeding chamber 5 through a third pipe 4, a circulating fan 6 is arranged in the third pipe 4, the air outlet of the circulating fan 6 faces the second feeding chamber 5, the lower end of the second feeding chamber 5 is connected with a second collecting port 7, the lower end of the second feeding chamber 5 is connected with the lower end of the first feeding chamber 2 through a circulating pipe 8, so that, through the provided circulating pipe 8, air and powdery materials with lower density can be passed through the first feeding chamber 2-the second feeding chamber 5 under the action of the circulating fan 6. The three pipes 4 - the second distribution chamber 5 - the circulation pipe 8 circulate, and during the circulation process, a part of the powdery materials with lower density always falls into the second collection port 7 for collection, while the powdery materials with heavier density cannot enter the third pipe 4 and will directly fall into the first collection port 3 for collection. During the operation, the circulating wind will impact the mixed materials just transported to the first distribution chamber 2 in the feeding pipe 1, avoiding the adhesion between the mixed powdery materials. At the same time, there is no need to control the proportion of the mixed powdery materials and the amount of feeding in the process of circulation, separation and collection, avoiding the problem of using the adsorption roller to only adsorb a certain amount of light granular materials, which has a greater impact on the screening effect.

[0022] In this embodiment, the circulation pipe 8 is arranged to be inclined upward on one side close to the first distribution chamber 2, and the height of the connection between the circulation pipe 8 and the first distribution chamber 2 is lower than the height of the connection between the feeding pipe 1 and the first distribution chamber 2. In this way, by arranging the circulation pipe 8 to be inclined upward, the collision contact between the circulating air in the first distribution chamber 2 and the mixed material transported by the feeding pipe 1 can be increased, thereby further improving the sorting efficiency.

[0023] In this embodiment, the wind direction in the horizontal direction at the connection between the circulation pipe 8 and the first distribution chamber 2 is opposite to the wind direction in the horizontal direction at the connection between the feeding pipe 1 and the first distribution chamber 2. By setting the connection between the circulation pipe 8 and the first distribution chamber 2 and the connection between the feeding pipe 1 and the first distribution chamber 2 on opposite sides, the convection effect between the circulating air and the wind transporting the material from the conveying pipe when entering the first distribution chamber 2 can be improved, and the mixed material can be further broken up.

[0024] In this embodiment, the first distribution chamber 2 and the first collection port 3 are connected through a first pipe 11, and the second distribution chamber 5 and the second collection port 7 are connected through a second pipe 12. A first guide plate 9 is provided between the first pipe 11 and the first distribution chamber 2, and a second guide plate 10 is provided between the second pipe 12 and the second distribution chamber 5.

[0025] In this embodiment, the first guide plate 9 and the second guide plate 10 are both arranged to be tilted downward. By arranging the tilted guide plates, accumulation of materials in the first distribution chamber 2 and the second distribution chamber 5 can be avoided.

[0026] In this embodiment, one end of the circulation pipe 8 is communicated with the first pipe 11 below the first guide plate 9 , and the other end of the circulation pipe 8 is communicated with the second material distribution chamber 5 above the second guide plate 10 .

[0027] In this embodiment, the circulating fan 6 is a frequency-adjustable fan. With this configuration, by using the frequency-adjustable circulating fan 6, it is possible to easily change the circulating wind force for different mixed materials.

[0028] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circulating air feeding and sorting system, comprising a feeding pipe (1), characterized in that: One end of the feeding pipe (1) is connected to the first material distribution chamber (2), the lower end of the first material distribution chamber (2) is connected to the first material collection port (3), the upper end of the first material distribution chamber (2) is connected to the second material distribution chamber (5) through the third pipe (4), a circulating fan (6) is provided in the third pipe (4), the air outlet of the circulating fan (6) faces the second material distribution chamber (5), the lower end of the second material distribution chamber (5) is connected to the second material collection port (7), and the lower end of the second material distribution chamber (5) is connected to the lower end of the first material distribution chamber (2) through the circulating pipe (8).

2. The circulating air feeding and sorting system according to claim 1 is characterized in that: The circulation pipe (8) is arranged to be inclined upward on one side close to the first distribution chamber (2), and the height of the connection between the circulation pipe (8) and the first distribution chamber (2) is lower than the height of the connection between the feeding pipe (1) and the first distribution chamber (2).

3. The circulating air feeding and sorting system according to claim 2 is characterized in that: The wind direction at the connection point between the circulation pipe (8) and the first material distribution chamber (2) in the horizontal direction is opposite to the wind direction at the connection point between the feeding pipe (1) and the first material distribution chamber (2) in the horizontal direction.

4. The circulating air feeding and sorting system according to claim 1 is characterized in that: The first material distribution chamber (2) and the first material collection port (3) are communicated through a first pipe (11), and the second material distribution chamber (5) and the second material collection port (7) are communicated through a second pipe (12). A first guide plate (9) is provided between the first pipe (11) and the first material distribution chamber (2), and a second guide plate (10) is provided between the second pipe (12) and the second material distribution chamber (5).

5. The circulating air feeding and sorting system according to claim 4 is characterized in that: The first guide plate (9) and the second guide plate (10) are both arranged to be tilted downward.

6. The circulating air feeding and sorting system according to claim 5, characterized in that: One end of the circulation pipe (8) is connected to the first pipe (11) below the first guide plate (9), and the other end of the circulation pipe (8) is connected to the second material distribution chamber (5) above the second guide plate (10).

7. The circulating air feeding and sorting system according to claim 1 is characterized in that: The circulating fan (6) is a frequency-adjustable fan.

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