Ingredient conveying equipment combining negative pressure conveying and positive pressure conveying

Abstract

The utility model provides negative pressure conveying and positive pressure conveying combined ingredient conveying equipment, which belongs to the technical field of ingredient conveying equipment, and comprises a plurality of bins, the discharge ends of the bins are connected with batching scales, the discharge ends of the batching scales are connected with a first negative pressure pipeline, one end of the first negative pressure pipeline is connected with a suction hopper, and the other end of the first negative pressure pipeline is connected with a second negative pressure pipeline. A vacuum connecting port of the suction hopper is connected with a negative pressure system used for forming a negative pressure environment, the discharging end of the suction hopper is connected with a temporary storage hopper, the discharging end of the temporary storage hopper is connected with a feeder, and a vacuum connecting port of the feeder is connected with a positive pressure system used for forming a positive pressure environment. The discharge end of the feeder is connected with a plurality of stirrers, and the discharge ends of the stirrers are connected with a finished product scale. The ingredient conveying equipment is high in conveying efficiency, free of residues and relatively concentrated in pipeline.

Description

Technical Field

[0001] This utility model relates to the technical field of batching and conveying equipment, specifically to a batching and conveying equipment that combines negative pressure conveying and positive pressure conveying. Background Technology

[0002] In the plastics industry, most companies do not have centralized material supply systems. Some companies with automatic material supply systems fall into two categories: (1) The entire conveying process uses negative pressure conveying. First, a multi-component (4-6 kinds) batching station is used to complete the batching, and then negative pressure suction is used for conveying. This method has limited conveying distance, low conveying efficiency when conveying over long distances, and requires manual pipeline conversion; (2) The entire conveying process uses positive pressure conveying. Feeders are installed at the bottom of multiple batching scales (usually more than 8), and each feeder is connected to a positive pressure pipeline. During conveying, multiple batching scales are used to complete the weighing and measurement, and then positive pressure suction is used for conveying. This method of multi-point conveying causes serious air pressure leakage, reduces conveying pressure, leads to poor material conveying, is time-consuming, inefficient, and easily causes residue to form in the feeders and positive pressure pipelines. Therefore, we propose a batching and conveying equipment that combines negative pressure conveying and positive pressure conveying. Utility Model Content

[0003] The purpose of this invention is to provide a batching and conveying equipment that combines negative pressure conveying and positive pressure conveying, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a batching and conveying device that combines negative pressure conveying and positive pressure conveying, including several hoppers. The discharge end of each hopper is connected to a batching scale, and the discharge end of the batching scale is connected to a first negative pressure pipeline. One end of the first negative pressure pipeline is connected to a suction hopper, and the vacuum connection port of the suction hopper is connected to a negative pressure system for creating a negative pressure environment. The discharge end of the suction hopper is connected to a temporary storage hopper, and the discharge end of the temporary storage hopper is connected to a feeder. The vacuum connection port of the feeder is connected to a positive pressure system for creating a positive pressure environment. The discharge end of the feeder is connected to several mixers, and the discharge end of the mixers is connected to a finished product scale.

[0006] Furthermore, the negative pressure system includes a negative pressure fan, the air inlet of which is connected to a third negative pressure pipeline, the end of which, away from the negative pressure fan, is connected to a dust collector, the air inlet of which is connected to a second negative pressure pipeline, and the end of which, away from the dust collector, is connected to the vacuum connection port of the suction hopper.

[0007] Furthermore, the positive pressure system includes a positive pressure fan, the outlet of which is connected to the vacuum port of the feeder.

[0008] Furthermore, a branch valve for material reversal is provided between the feeder and each mixer.

[0009] Furthermore, the volume of the suction hopper is the same as the volume of the temporary storage hopper.

[0010] Compared with the prior art, the technical effects of this utility model are as follows:

[0011] In this invention, the batching and conveying equipment divides the entire conveying process into two independent parts: a batching part and a conveying part. The batching part is from the batching scale to the temporary storage hopper, with a short pipeline and a negative pressure conveying method, resulting in no residue during conveying. The conveying part is from the temporary storage hopper to the mixer, using a positive pressure conveying method, which can convey materials over long distances, has a large conveying capacity, high conveying efficiency, and a low material speed, making it less prone to stringing. The materials are batched centrally under negative pressure, and then the batched materials are dispersedly conveyed to the mixer using single-point positive pressure conveying. The entire conveying process is highly efficient, leaves no residue, and has a relatively centralized pipeline. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the material feeding and conveying equipment according to an embodiment of the present utility model.

[0013] In the diagram: 1. Silo, 2. Batching scale, 3. First negative pressure pipeline, 4. Second negative pressure pipeline, 5. Third negative pressure pipeline, 6. Suction hopper, 7. Negative pressure system, 71. Negative pressure fan, 72. Dust collector, 8. Temporary storage hopper, 9. Feeder, 10. Positive pressure system, 101. Positive pressure fan, 11. Mixer, 12. Finished product scale, 13. Diverter valve, 14. Material receiving port, 15. Extruder, 16. Positive pressure conveying pipeline. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1This embodiment provides a batching and conveying device combining negative pressure conveying and positive pressure conveying, including several hoppers 1, each containing different types of materials. The discharge end of the hopper 1 is connected to the inlet end of the batching scale 2, which is used to weigh and measure the materials with a measurement accuracy of less than 0.5%. The discharge end of the batching scale 2 is connected to the material receiving port 14 of the first negative pressure pipeline 3, which is also connected to the inlet end of the suction hopper 6. The vacuum connection port of the suction hopper 6 is connected to a negative pressure system 7, which is used to create a negative pressure environment. The discharge end of the suction hopper 6 is connected to the inlet end of a temporary storage hopper 8, which is used to temporarily store the batched materials.

[0016] Specifically, the negative pressure system 7 includes a negative pressure fan 71, which uses an existing fan and will not be described in detail here. The negative pressure fan 71 can quickly discharge the air in the negative pressure pipelines (i.e., the first negative pressure pipeline 3, the second negative pressure pipeline 4, and the third negative pressure pipeline 5), making the air pressure in the pipeline lower than the outside air pressure, thus creating a negative pressure environment. The air inlet of the negative pressure fan 71 is connected to the third negative pressure pipeline 5, and the end of the third negative pressure pipeline 5 away from the negative pressure fan 71 is connected to the air outlet of the dust collector 72. The main function of the dust collector 72 is to remove dust, debris, and other small particles generated during material conveying, ensuring a clean and safe production environment. The air inlet of the dust collector 72 is connected to the second negative pressure pipeline 4, and the end of the second negative pressure pipeline 4 away from the dust collector 72 is connected to the vacuum connection port of the suction hopper 6.

[0017] Specifically, during operation, the negative pressure fan 71 creates a negative pressure environment in the negative pressure pipeline. Materials from multiple silos 1 enter their respective batching scales 2. The batching scales 2 weigh the materials. After weighing, all materials enter the first negative pressure pipeline 3 through the material receiving port 14. Then, all materials enter the suction hopper 6 through the first negative pressure pipeline 3 to complete the batching. The batched materials enter the temporary storage hopper 8 for short-term storage.

[0018] Specifically, the discharge end of the temporary storage hopper 8 is connected to the feed end of the feeder 9. The vacuum connection port (i.e., the air inlet end of the feeder 9) is connected to a positive pressure system 10, which is used to create a positive pressure environment. The discharge end (i.e., the air outlet end of the feeder 9) is connected to a positive pressure conveying pipeline 16. The end of the positive pressure conveying pipeline 16 away from the feeder 9 is connected to several mixers 11. A diversion valve 13 is provided between the feeder 9 and each mixer 11. The diversion valve 13 is used to redirect the material, allowing the material to be conveyed to the corresponding mixer 11. The discharge end of the mixer 11 is connected to the feed end of the finished product scale 12. The discharge end of the finished product scale 12 is connected to an extruder 15 or other equipment, selected according to actual processing needs. In this embodiment, the discharge end of the finished product scale 12 is connected to the extruder 15. The mixers 11 are used to mix the materials. The finished product scale 12 is used to weigh the mixed materials to ensure that the output finished product meets the predetermined requirements. The extruder 15 is used to process the output finished material into a specific shape.

[0019] Specifically, the positive pressure system 10 includes a positive pressure blower 101, which uses an existing blower and will not be described in detail here. The positive pressure blower 101 can draw in external air to form a high-pressure airflow, which is then sent into the positive pressure conveying pipeline 16, making the air pressure inside the pipeline higher than the external air pressure, thus creating a positive pressure environment. The outlet of the positive pressure blower 101 is connected to the vacuum connection port of the feeder 9. During operation, the positive pressure blower 101 draws in external air to form a high-pressure airflow, which enters the feeder 9 and the positive pressure conveying pipeline 16, creating a positive pressure environment. The material in the temporary storage hopper 8 enters the feeder 9, and the high-pressure airflow carries the material in the feeder 9, allowing the material to be conveyed through the positive pressure conveying pipeline 16 to the mixer 11.

[0020] Specifically, in this embodiment, the volume of the suction hopper 6 is the same as the volume of the temporary storage hopper 8, so as to improve the overall efficiency. That is, in the process of material conveying, the following process can be achieved: the temporary storage hopper 8 temporarily stores a tray of material, the suction hopper 6 dispenses a tray of material, and the positive pressure conveying pipeline 16 conveys a tray of material.

[0021] Specifically, this batching and conveying equipment breaks down the entire conveying process into two independent parts: batching and conveying. The batching part runs from the batching scale 2 to the temporary storage hopper 8, with a short pipeline and a negative pressure conveying method, resulting in no residue during conveying. The conveying part runs from the temporary storage hopper 8 to the mixer 11, using a positive pressure conveying method, which allows for long-distance conveying, large conveying capacity, high conveying efficiency, and lower material speed, making it less prone to stringing. The material is batched centrally under negative pressure, and then the batched material is conveyed to the mixer 11 in a decentralized manner using single-point positive pressure conveying. The entire conveying process is highly efficient, leaves no residue, and has a relatively centralized pipeline.

[0022] Specifically, the working principle of this utility model is as follows: the negative pressure fan 71 creates a negative pressure environment in the negative pressure pipeline, and the positive pressure fan 101 creates a positive pressure environment in the positive pressure conveying pipeline 16. Materials from multiple silos 1 enter their respective batching scales 2, which weigh the materials. The weighed materials then enter the suction hopper 6 through the first negative pressure pipeline 3 to complete the batching process. The batched materials are then discharged into the temporary storage hopper 8 for short-term storage. The materials in the temporary storage hopper 8 enter the feeder 9, and then enter each mixer 11 through the positive pressure conveying pipeline 16. After mixing, the materials are weighed by the finished product scale 12, and the output finished materials are processed into specific shapes by the extruder 15.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A batching and conveying equipment combining negative pressure conveying and positive pressure conveying, characterized in that, It includes several silos (1), the discharge end of the silos (1) is connected to a batching scale (2), the discharge end of the batching scale (2) is connected to a first negative pressure pipeline (3), one end of the first negative pressure pipeline (3) is connected to a suction hopper (6), the vacuum connection port of the suction hopper (6) is connected to a negative pressure system (7) for forming a negative pressure environment, the discharge end of the suction hopper (6) is connected to a temporary storage hopper (8), the discharge end of the temporary storage hopper (8) is connected to a feeder (9), the vacuum connection port of the feeder (9) is connected to a positive pressure system (10) for forming a positive pressure environment, the discharge end of the feeder (9) is connected to several mixers (11), and the discharge end of the mixers (11) is connected to a finished product scale (12).

2. The batching and conveying equipment combining negative pressure conveying and positive pressure conveying according to claim 1, characterized in that, The negative pressure system (7) includes a negative pressure fan (71), the air inlet of the negative pressure fan (71) is connected to a third negative pressure pipeline (5), the end of the third negative pressure pipeline (5) away from the negative pressure fan (71) is connected to a dust collector (72), the air inlet of the dust collector (72) is connected to a second negative pressure pipeline (4), and the end of the second negative pressure pipeline (4) away from the dust collector (72) is connected to the vacuum connection port of the suction hopper (6).

3. The batching and conveying equipment combining negative pressure conveying and positive pressure conveying according to claim 1, characterized in that, The positive pressure system (10) includes a positive pressure fan (101), the outlet of which is connected to the vacuum port of the feeder (9).

4. The batching and conveying equipment combining negative pressure conveying and positive pressure conveying according to claim 1, characterized in that, A branch valve (13) for material reversal is provided between the feeder (9) and each mixer (11).

5. The batching and conveying equipment combining negative pressure conveying and positive pressure conveying according to claim 1, characterized in that, The volume of the suction hopper (6) is the same as that of the temporary storage hopper (8).

Images