KR-102964097-B1 - Process-Linked Multi-Stage Dust Collection System for a Powder Drying Apparatus

KR102964097B1KR 102964097 B1KR102964097 B1KR 102964097B1KR-102964097-B1

Abstract

The objective of the present invention, proposed to solve the aforementioned problems, is to provide a dust collection system for a powder drying device capable of discharging dust generated from powder fed into the powder drying device to the outside. To this end, the process-linked multi-stage dust collection system for a powder drying device according to the present invention comprises: a cyclone having a cyclone inlet for feeding powder on one side of the upper portion of the side, an opening portion for discharging dust contained in the powder on the upper portion of the side, and a cyclone outlet for discharging powder on the lower portion of the side; an upper hopper including an upper hopper inlet connected to the cyclone outlet and an upper hopper outlet for discharging powder fed through the upper hopper inlet; a powder drying device for drying powder transmitted from the upper hopper; a cooling device for cooling powder transmitted from the powder drying device; a discharge hopper for holding powder transmitted from the cooling device; and a dust collection hopper for holding dust transmitted through the opening portion. A bag filter fan connected to the dust collection hopper and providing a suction force to suck in the dust through the dust collection hopper to the opening; and a discharge ton bag containing dust discharged from the dust collection hopper, wherein when the powder is fed into the cyclone inlet, a suction force is generated by the bag filter fan, and the dust contained in the powder is discharged into the discharge ton bag through the opening and the dust collection hopper.

Inventors

박근실

Assignees

주식회사 우리이엠아이

Dates

Publication Date: 20260513
Application Date: 20260227

Claims (6)

A cyclone having a cyclone inlet for introducing powder on one side of the upper portion, an opening for discharging dust contained in the powder on the upper portion, and a cyclone outlet for discharging powder on the lower portion; An upper hopper comprising an upper hopper inlet connected to the cyclone discharge port to receive powder discharged from the cyclone, and an upper hopper discharge port for discharging powder received through the upper hopper inlet; A powder drying device for drying powder transmitted from the upper hopper above; A cooling device for cooling powder transmitted from the above-mentioned powder drying device; A discharge hopper for holding powder transferred from the above cooling device; A dust collection hopper for collecting dust discharged through the opening of the above-mentioned cyclone; A bag filter fan connected to the dust collection hopper and providing a suction force to suck in the dust through the dust collection hopper to the opening; and It includes a discharge ton bag for holding dust discharged from the dust collection hopper, and When the powder is fed into the cyclone inlet, if suction force is generated by the bag filter fan, the dust contained in the powder is discharged into the discharge ton bag through the opening and the dust collection hopper. In at least one of the processes in which the powder is fed through the cyclone inlet, the powder falls and is transported through the upper hopper, and the powder is fed immediately before or during feeding into the powder drying device, the bag filter fan is selectively driven in response to the process section where dust is generated. A process-linked multi-stage dust collection system for a powder drying device, characterized in that the dust is configured to be discharged through the dust collection hopper before the dust is introduced into the interior of the powder drying device.
In paragraph 1, The upper hopper mentioned above is, An upper hopper inlet connected to the above-mentioned cyclone discharge port for introducing powder; An upper hopper discharge port for discharging powder to the above-mentioned powder drying device; An upper hopper body supporting the upper hopper inlet and the upper hopper outlet; and It includes a first butterfly valve provided on the upper surface of the upper hopper body and connected to the dust collection hopper, At the time when dust is generated during the process in which the powder is fed into the upper hopper body through the upper hopper inlet or falls and is transported within the upper hopper body, the first butterfly valve is opened by the operation of the bag filter fan, A process-linked multi-stage dust collection system for a powder drying device, characterized in that the dust contained in the powder is configured to be discharged into the discharge ton bag through the first butterfly valve and the dust collection hopper.
In paragraph 1, The above powder drying device is, Powder container for holding powder; An input port provided at the top of the powder container and connected to the upper hopper discharge port; A discharge port provided at the bottom of the powder container and connected to the cooling device; and It includes a second butterfly valve provided on the upper surface of the powder container and connected to the dust collection hopper, At the time when dust is generated immediately before or during the process of introducing the powder into the powder container, the second butterfly valve is opened by the operation of the bag filter fan, A process-linked multi-stage dust collection system for a powder drying device, characterized in that the dust contained in the powder is configured to be discharged to the discharge ton bag through the second butterfly valve and the dust collection hopper before the dust is introduced into the interior of the powder container.
In paragraph 1, A process-linked multi-stage dust collection system for a powder drying device, further comprising a first air knocker that applies impact to the upper hopper at preset intervals to prevent dust from accumulating inside the upper hopper.
In paragraph 1, A process-linked multi-stage dust collection system for a powder drying device, further comprising a second air knocker that applies impact to the dust collection hopper at preset intervals to prevent dust from accumulating inside the dust collection hopper.
In paragraph 3, The above powder drying device is, A valve disc positioned corresponding to the discharge port to open and close the discharge port; A cylinder that moves the above valve disc up and down or horizontally in the direction of the discharge port; An expansion seal mounted on the above-mentioned outlet or the above-mentioned valve disc, which expands or contracts by air; An air injection unit for supplying air to the above expansion seal; A vacuum ejector for discharging air from the expansion seal; and A process-linked multi-stage dust collection system for a powder drying device, further comprising a control unit that controls the operation of the cylinder, the air injection unit, and the vacuum ejector.

Description

Process-Linked Multi-Stage Dust Collection System for a Powder Drying Apparatus The present invention relates to a system for collecting fine particles generated when drying powder. Powder drying devices are used to dry powders required for the production of secondary batteries. The powder fed into the powder drying device is dried in the device and then discharged to the outside through the outlet. In this case, very fine particles (hereinafter simply referred to as dust) may be generated from the powder introduced into the powder drying device, and such dust may be adsorbed (or deposited) at various locations inside the powder drying device, and accordingly, various problems may occur. For example, when lithium hydroxide is introduced into a powder drying device that dries powders such as lithium hydroxide, dust adsorbed inside the main body constituting the powder drying device can reduce the drying efficiency of the powder and degrade the performance of the powder drying device itself. Furthermore, dust adsorbed onto the nozzles of the powder drying device can cause nozzle clogging, and significant time, labor, and costs are required for repairs and maintenance to resolve these defects. FIG. 1 is an exemplary diagram showing the configurations of a process-linked multi-stage dust collection system for a powder drying device according to the present invention. FIGS. 2 and FIGS. 3 are exemplary diagrams illustrating the operation of a process-linked multi-stage dust collection system for a powder drying device according to the present invention. FIG. 4 is an exemplary diagram showing an upper hopper, a cyclone, a powder drying device, and a dust collection hopper constituting a process-linked multi-stage dust collection system for a powder drying device according to the present invention. FIG. 5 is an exemplary diagram showing the structure of a cyclone applied to a process-linked multi-stage dust collection system for a powder drying device according to the present invention. FIG. 6 is an exemplary diagram showing the configurations of a powder drying device applied to a process-linked multi-stage dust collection system for a powder drying device according to the present invention. FIG. 7 is an exemplary diagram showing the structure of an expansion seal of a powder drying device illustrated in FIG. 6. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. FIG. 1 is an exemplary diagram showing the configurations of a process-linked multi-stage dust collection system for a powder drying device according to the present invention, FIG. 2 and FIG. 3 are exemplary diagrams for explaining the operation of a process-linked multi-stage dust collection system for a powder drying device according to the present invention, FIG. 4 is an exemplary diagram showing an upper hopper, a cyclone, a powder drying device, and a dust collection hopper constituting a process-linked multi-stage dust collection system for a powder drying device according to the present invention, and FIG. 5 is an exemplary diagram showing the structure of a cyclone applied to a process-linked multi-stage dust collection system for a powder drying device according to the present invention. The powder drying device (100) applied to the process-linked multi-stage dust collection system for the powder drying device according to the present invention (hereinafter simply referred to as the dust collection system) may be, for example, a KETTLE-type dryer that dries the positive electrode material among the positive electrode material and negative electrode material that are components of a secondary battery, a KETTLE-type dryer that dries the precursor used in the manufacture of the positive electrode material, an industrial dryer for evaporating moisture from a moisture-containing product used in chemistry, bio, pharmaceutical, etc. and discharging only powder, an industrial mixer used in chemistry, bio, pharmaceutical, etc. for mixing, grinding, or coating two or more types of powders. As shown in FIG. 1, the dust collection system according to the present invention includes a powder drying device (100), an upper hopper (200), a cyclone (210), a dust collection hopper (300), an input ton bag (400), an input hopper (500), a first transporter (600), a cooler (700), a second transporter (800), and a discharge hopper (900). First, the input ton bag (400) contains powder to be input into the powder drying device (100). Next, an input hopper (500) is provided at the bottom of the input ton bag (400). The powder contained in the input ton bag (400) is dropped into the input hopper (500). Next, the first transporter (600) is provided at the bottom of the input hopper (500). The powder contained in the input hopper (500) is dropped into the first transporter (600). Next, an upper hopper (200) equipped with a cyclone (210) is provided at the top of the first transporter. The powder introduced int