Negative-pressure fiber foreign matter removing device

Abstract

The utility model discloses a fiber foreign matter negative pressure removing device which comprises a negative pressure adsorption ring, a three-way connecting hose and a filtering device, the negative pressure adsorption ring is arranged inside an inlet of a feeding bin of a pneumatic conveyor, a plurality of air inlet holes are formed in the inner wall of the negative pressure adsorption ring, and outlet pipes are arranged on the two sides of the negative pressure adsorption ring respectively. The two outlet pipes are connected with two pipe openings of the three-way connecting hose respectively, the last pipe opening of the three-way connecting hose is connected with an inlet of the filtering device, and an outlet of the filtering device is communicated with a pneumatic conveying pipeline of the pneumatic conveyor through a ball valve. The novel pneumatic conveyor has the advantages that the original negative pressure pneumatic conveying capacity of the pneumatic conveyor is utilized, the negative pressure adsorption ring is arranged in the feeding bin, dust and fine limiting foreign matter generated when raw materials are fed can be removed, filtered and cleaned, the working environment is prevented from being polluted, the content of fiber foreign matter in the raw materials is reduced, and the product quality is improved.

Description

Technical field:

[0001] The utility model relates to the field of foreign matter removal, in particular to a negative pressure device for removing fiber foreign matter. Background technology:

[0002] In the production process of lithium-ion battery negative electrode materials, the raw material is carbon powder, which is fed into the system through a pneumatic conveyor, such as Figure 1 As shown, the pneumatic conveyor mainly includes a feeding bin 1, a conical storage bin 2 at the bottom of the feeding bin 1, and an acceleration chamber 3 at the bottom of the conical storage bin 2 for negative pressure air delivery. The acceleration chamber 3 also includes a pneumatic conveying pipe 3.1, one end of which is connected to the induced draft fan through a negative pressure pipe 3.2. The raw materials are first fed from the feeding bin 1 to the conical storage bin 2 through the bottom opening of the ton bag (also called container bag), and then pneumatically conveyed away by the acceleration chamber 3.

[0003] When the raw materials enter the feeding bin 1, dust is generated, which pollutes the working environment. At the same time, there are also tiny fiber foreign matter in the raw materials. The more fiber foreign matter is mixed into the raw materials, the more it affects the quality of the product. Utility model content:

[0004] The purpose of the utility model is to provide a negative pressure removal device for fiber foreign matter.

[0005] The utility model is implemented by the following technical solutions:

[0006] A negative pressure removal device for fiber foreign matter, comprising a negative pressure adsorption ring, a three-way connecting hose, and a filter device, wherein the negative pressure adsorption ring is arranged inside the inlet of a feeding bin of a pneumatic conveyor, the inner wall of the negative pressure adsorption ring is provided with a plurality of upwardly oblique air inlet holes along annular intervals, and outlet pipes are respectively connected on opposite sides of the negative pressure adsorption ring, the two outlet pipes pass through the side walls of the feeding bin and are respectively connected to the two pipe ends of the three-way connecting hose, the last pipe end of the three-way connecting hose is connected to the inlet of the filter device, and the outlet of the filter device is connected to the pneumatic conveying pipeline of the pneumatic conveyor through a ball valve;

[0007] The filtering device includes a cylinder with a closed bottom end, an upper cover is fixed to the top of the cylinder by a clamp, an inlet is provided on the cylinder, a connecting pipe is provided in the cylinder, an air inlet is provided at the top of the connecting pipe, and a filter screen is covered at the top of the connecting pipe, the bottom end of the connecting pipe passes through the bottom end of the cylinder, and the bottom end of the connecting pipe is the outlet of the filtering device.

[0008] Preferably, the angle between the axis of the air inlet hole and the horizontal plane is 45 degrees, and the axis lines of the multiple air inlet holes converge at a point above the negative pressure adsorption ring.

[0009] Advantages of this utility model: This utility model utilizes the original negative pressure pneumatic conveying capacity of the pneumatic conveyor and sets a negative pressure adsorption ring in the feeding bin, which can remove dust and small limiting foreign matter when the raw materials are fed, and filter and clean them to avoid polluting the working environment, reduce the content of fiber foreign matter in the raw materials, and improve the quality of the product. Description of the drawings:

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0011] Figure 1 This is a schematic diagram of the overall structure of the utility model on the pneumatic conveyor structure;

[0012] Figure 2 It is a schematic diagram of the front view of the negative pressure adsorption ring structure;

[0013] Figure 3 This is a schematic diagram of the negative pressure adsorption ring structure inside the feeding bin;

[0014] Figure 4 It is a schematic diagram of the structure of the filtering device.

[0015] In the figure: feeding silo 1, conical storage silo 2, acceleration chamber 3, pneumatic conveying pipe 3.1, negative pressure pipe 3.2, negative pressure adsorption ring 4, air inlet 4.1, outlet pipe 4.2, three-way connecting hose 5, filter device 6, cylinder 6.1, clamp 6.2, upper cover 6.3, connecting pipe 6.4, air inlet 6.5, filter screen 6.6, ball valve 7. Specific implementation method:

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, a negative pressure removal device for fiber foreign matter includes a negative pressure adsorption ring 4, a three-way connecting hose 5, and a filter device 6. The negative pressure adsorption ring 4 is arranged inside the inlet of the feeding bin 1 of the pneumatic conveyor. The inner wall of the negative pressure adsorption ring 4 is provided with a plurality of oblique upward air inlet holes 4.1 along annular intervals. The axis of the air inlet hole 4.1 is at an angle of 45 degrees to the horizontal plane, and the axis of the plurality of air inlet holes 4.1 converges at a point above the negative pressure adsorption ring 4. The opposite sides of the negative pressure adsorption ring 4 are respectively connected with outlet pipes 4.2. The two outlet pipes 4.2 pass through the side wall of the feeding bin 1 and are respectively connected to the two pipe ends of the three-way connecting hose 5. The last pipe end of the three-way connecting hose 5 is connected to the inlet of the filter device 6. The outlet of the filter device 6 is connected to the pneumatic conveying pipe 3.1 of the pneumatic conveyor through a ball valve 7.

[0018] Because of the negative pressure in the pneumatic conveying pipe 3.1, suction is generated in the negative pressure adsorption ring 4, the three-way connecting hose 5, and the filter device 6 in sequence. When the raw materials pass through the feeding bin 1, the raised dust and light-weight fine fiber foreign matter are sucked in from the air inlet 4.1, pass through the outlet pipe 4.2 of the negative pressure adsorption ring 4 and enter the three-way connecting hose 5. The multiple annular air inlet holes 4.1 arranged obliquely on the upper side ensure that more dust and fiber foreign matter are sucked away, thereby improving the removal rate. The dust and fiber foreign matter enter the filter device 6 through the three-way connecting hose 5 and are filtered out. The ball valve 7 can control the magnitude of the negative pressure wind speed.

[0019] The filter device 6 includes a cylinder 6.1 with a closed bottom end, and an upper cover 6.3 is clamped and fixed to the top of the cylinder 6.1 by a clamp 6.2. An inlet is provided on the cylinder 6.1, and a connecting pipe 6.4 is provided in the cylinder 6.1. An air inlet 6.5 is provided at the top of the connecting pipe 6.4, and a filter screen 6.6 is covered at the top of the connecting pipe 6.4. The bottom end of the connecting pipe 6.4 passes through the bottom end of the cylinder 6.1, and the bottom end of the connecting pipe 6.4 is the outlet of the filter device 6.

[0020] Dust and limited foreign matter are inside the cylinder 6.1 of the filter device 6, and enter the connecting pipe 6.4 from the air inlet 6.5 along the wind force. However, the wind is sent through, while the dust and limited foreign matter are blocked by the filter screen 6.6, which is preferably 300 mesh. After a certain period of time, the dust and limited foreign matter accumulate in the cylinder 6.1 and need to be cleaned. At this time, unlock the clamp 6.2, open the upper cover 6.3, clean the inside of the cylinder 6.1, and replace the filter screen 6.6.

[0021] Working principle: When the present invention is in use, due to the negative pressure in the pneumatic conveying pipe 3.1, suction is generated in the negative pressure adsorption ring 4, the three-way connecting hose 5, and the filter device 6 in sequence. When the raw materials pass through the feeding bin 1, dust and light-weight fine fiber foreign matter are sucked in from the air inlet 4.1, pass through the three-way connecting hose 5 and enter the filter device 6. The dust and limited foreign matter are blocked and filtered out by the filter mesh 6.6 of the filter device 6.

[0022] This new model utilizes the original negative pressure pneumatic conveying capacity of the pneumatic conveyor and sets a negative pressure adsorption ring 4 in the feeding bin 1, which can remove dust and fine limiting foreign matter when the raw materials are fed, and filter and clean them to avoid polluting the working environment, reduce the content of fiber foreign matter in the raw materials, and improve the quality of the product.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fiber foreign body negative pressure removal device, characterized in that: It includes a negative pressure adsorption ring, a three-way connecting hose, and a filtering device. The negative pressure adsorption ring is arranged inside the inlet of the feeding bin of the pneumatic conveyor. The inner wall of the negative pressure adsorption ring is provided with a plurality of upward oblique air inlet holes along the annular interval. The opposite sides of the negative pressure adsorption ring are respectively connected with outlet pipes. The two outlet pipes pass through the side walls of the feeding bin and are respectively connected to the two pipe ends of the three-way connecting hose. The last pipe end of the three-way connecting hose is connected to the inlet of the filtering device. The outlet of the filtering device is connected to the pneumatic conveying pipeline of the pneumatic conveyor through a ball valve. The filtering device includes a cylinder with a closed bottom end, an upper cover is fixed to the top of the cylinder by a clamp, an inlet is provided on the cylinder, a connecting pipe is provided in the cylinder, an air inlet is provided at the top of the connecting pipe, and a filter screen is covered at the top of the connecting pipe, the bottom end of the connecting pipe passes through the bottom end of the cylinder, and the bottom end of the connecting pipe is the outlet of the filtering device.

2. The negative pressure removal device for fiber foreign matter according to claim 1, characterized in that: The included angle between the axis of the air inlet hole and the horizontal plane is 45 degrees, and the axis of the plurality of air inlet holes converges at a point above the negative pressure adsorption ring.

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