A device for extracting powder

Abstract

The utility model relates to a device of drawing powder material, including container, suction material pipeline, first air inlet pipe, the first air inlet pipe sets up on the lateral wall of suction material pipeline, still include sliding block, gasbag, the gasbag is located the outside of sliding block, the sliding block moves up and down along suction material pipeline, the gasbag tightens the inside wall of container after inflation. The traditional powder material drawing device has solved the problems of poor sealing, easy to block, low efficiency and difficult to meet the production demand.

Description

Technical Field

[0001] This utility model relates to the field of powder extraction, and in particular to a device for extracting powder. Background Technology

[0002] In existing technologies, powder extraction and transfer are crucial steps in the production process of food processing, pharmaceutical manufacturing, and chemical production. Their sealing performance, operational flexibility, and extraction efficiency directly impact the production environment, product quality, and overall production efficiency. However, traditional powder extraction devices suffer from numerous significant problems in practical applications, making it difficult to meet the demands of modern production.

[0003] Application document publication (announcement) number: CN220448629U, discloses a powder extraction and storage bin, including a bin, a connecting cylinder, and an extraction assembly. The bin is used to store powder. The connecting cylinder is disposed inside the bin and spaced apart from the bottom of the bin. The connecting cylinder has a cavity with its opening facing downwards. The gap between the connecting cylinder and the bottom of the bin forms an inlet for the powder in the bin to enter the cavity. The extraction assembly includes an extraction pipe and a vacuum pump. One end of the extraction pipe extends into the cavity, and the other end is connected to the vacuum pump to extract the powder from the cavity. The connecting cylinder is vertically movably installed inside the bin, allowing the size of the inlet to be adjustable. This invention eliminates the need for frequent adjustments to the position of the extraction pipe, enabling continuous powder extraction. It is simple to operate, convenient to use, and improves extraction efficiency.

[0004] However, the extraction device lacks a direct seal between itself and the container. Most devices employ a rigid structure in contact with the container opening, or rely solely on a simple sealing ring for sealing. This fails to accommodate variations in the inner wall dimensions of containers of different sizes, easily leading to gaps. When extracting powder, the high-speed airflow carries the powder, and tiny particles escape through these gaps, causing dust pollution in the production environment. This not only harms the health of operators but also results in powder waste and affects product purity. Furthermore, the rigid sealing structure is prone to failure with slight vibrations or displacements, requiring frequent shutdowns for maintenance and seal replacement, severely reducing production continuity.

[0005] Meanwhile, its single suction channel easily creates localized negative pressure near the suction port, causing powder agglomeration and blockage of the pipe. Furthermore, the lack of effective auxiliary airflow guidance hinders powder flow within the container, making it difficult to draw powder into the pipe in certain areas, requiring repeated operations to complete the extraction and prolonging the operation time. In addition, when the powder has high moisture content, it easily adheres to the inner wall of the container, a problem that traditional devices cannot effectively solve, further reducing extraction efficiency and cleanliness. Utility Model Content

[0006] This application provides a device for extracting powder, which solves the problems of poor sealing, easy clogging, low efficiency, and difficulty in meeting production needs in the traditional powder extraction device of the prior art.

[0007] The technical solutions adopted in the embodiments of this application are as follows.

[0008] An apparatus for extracting powder includes a container, a suction pipe, and a first air inlet pipe; the first air inlet pipe is disposed on the side wall of the suction pipe; it also includes a slider and an air bladder; the air bladder is located outside the slider; the slider moves up and down along the suction pipe; the air bladder inflates and tightens the inner side wall of the container.

[0009] As a further improvement to the above technical solution: The slider is provided with a bearing and a connecting sleeve; two sets of bearings are arranged in an upper and lower array; the connecting sleeve is sleeved on the bearing; the airbag is provided on the connecting sleeve.

[0010] The suction end of the suction pipe is equipped with a dust collection hood; the outlet end of the first air inlet pipe is located above the dust collection hood; the outlet end of the first air inlet pipe faces the side wall of the container.

[0011] The end face of the suction pipe extends out of the suction pipe; the side wall of the suction pipe is provided with a suction port; the suction port corresponds to the dust collection hood.

[0012] A second air inlet pipe is provided on the side wall of the suction pipe; the air outlet of the second air inlet pipe is flush with the bottom of the suction pipe; the second air inlet pipe is located on the inner side wall of the suction pipe.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This device employs an airbag-type sealing structure. By inflating the airbag on the outside of the slider, it adheres tightly to the inner wall of the container, forming a reliable annular seal. This sealing method can adapt to minor deviations in the container's inner diameter, maintaining a stable seal even if the container is out of round or the device experiences slight vibrations during operation. Compared to traditional rigid contact or simple sealing rings, this device avoids gaps, preventing high-speed airflow from carrying dust out and reducing dust pollution and material waste in the production environment. Simultaneously, the flexible contact avoids damage to the container's inner wall, reducing maintenance costs and making it suitable for fields with stringent cleanliness requirements, such as food and pharmaceutical industries.

[0014] 2. The device employs a multi-airflow system with a main suction channel, lateral guide channels, and a bottom agitation channel. The dust collection hood expands the effective range of the main suction port, preventing powder agglomeration and pipe blockage caused by single-point strong suction. The first air inlet pipe blows air onto the side wall of the container, creating a circulating airflow to prevent powder from adhering to the wall and depositing; the second air inlet pipe is flush with the bottom of the suction pipe, agitating the powder deposited at the bottom and breaking up bridging. The coordinated multi-channel airflow, combined with the optimized structure of the suction pipe and dust collection hood, significantly improves powder flow performance and suction efficiency, eliminating dead zones, making it particularly suitable for handling damp or sticky powders.

[0015] 3. The slider, via bearings and a connecting sleeve structure, can move freely up and down along the suction pipe, enabling rapid adjustment of the sealing position and suction height to adapt to different container depths and material levels. The rapid inflation / deflation design of the airbag allows for quick installation and disassembly. One unit can be adjusted to accommodate various container sizes, reducing equipment investment and replacement frequency. The simplified operation process lowers the skill requirements for operators, improves production line changeover efficiency and adaptability, and meets the needs of multi-variety, multi-batch production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the powder extraction device in this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the powder extraction device of this utility model, in which the suction pipe is located at the bottom.

[0018] Figure 3 This is a schematic diagram of the structure of the powder extraction device of this utility model, in which the suction pipe is located at the top.

[0019] In the diagram: 1. First air inlet pipe; 2. Bearing; 3. Connecting sleeve; 4. Dust collection hood; 5. Dust suction pipe; 6. Airbag; 7. Sliding block; 8. Suction pipe; 9. Container; 10. Second air inlet pipe; 11. Residual material at the bottom; 12. Dust suction port. Detailed Implementation

[0020] This application provides a device for extracting powder, which solves the problems of poor sealing, easy clogging, low efficiency, and difficulty in meeting production needs in the traditional powder extraction device of the prior art.

[0021] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] Main structure: The container is a stainless steel cylindrical container; the suction pipe is a stainless steel pipe, with one end extending into the container and the other end connected to a vacuum pump; the first air inlet pipe is welded to the side wall of the suction pipe, and the air outlet is located inside the container and facing the side wall of the container.

[0023] Sealing adjustment system: The slider is a ring-shaped metal part with two sets of bearings installed in an upper and lower array. The connecting sleeve is sleeved on the outside of the bearing, and a rubber air bladder is bonded to the outer wall of the connecting sleeve. The slider can slide up and down along the suction pipe, and the inner wall of the container is tightened by the inflation of the air bladder to achieve sealing.

[0024] Optimized suction structure: A conical dust collection hood is fixed to the suction end (inner end of the container) of the suction pipe; a suction pipe extends from the end face of the suction pipe, and multiple suction ports are evenly opened on the side wall of the suction pipe, with the suction ports corresponding to the inner side of the dust collection hood; a second air inlet pipe is welded to the inner side wall of the suction pipe, and its air outlet pipe is flush with the bottom of the suction pipe and faces the inside of the suction pipe.

[0025] Adjust the slider to a suitable height below the container opening (ensuring that the airbag can completely cover the sealed area below the container opening after inflation); set appropriate airflow pressures for the first and second air inlets; maintain a stable negative pressure after the vacuum pump is started to ensure that the wheat flour is extracted at a uniform speed.

[0026] The operator places the suction pipe, along with the slider, dust collection hood, and suction pipe, into the container and adjusts the slider to the preset height. Compressed air is then injected into the airbag through the inflation device until the airbag is tightly attached to the inner wall of the container. The inflation valve is then closed, at which point a seal is formed between the container opening and the suction pipe, creating a seamless seal.

[0027] Start the extraction system: Turn on the vacuum pump to create negative pressure in the suction pipe, and at the same time open the valves of the first and second air inlets to introduce compressed air.

[0028] Lateral airflow to prevent powder from adhering to the wall: The first air inlet pipe blows airflow out to the side wall of the container. The airflow flows down along the container wall, blowing off the wheat flour adhering to the wall surface. At the same time, a circulating airflow is formed, which drives the wheat flour in the container to gather towards the dust collection hood, preventing the powder from depositing on the side wall.

[0029] The airflow from the second air intake pipe is flush with the bottom of the suction pipe, directly acting on the wheat flour deposited at the bottom of the container. It disturbs any clumps or bridging of the powder, loosening it so that it enters the suction pipe through the suction port and then flows into the material suction pipe.

[0030] The dust collection hood expands the suction range, and together with the multiple suction ports on the suction pipe, it achieves full coverage extraction of wheat flour at different heights and in different areas within the container, avoiding the "dead corners" of residue caused by traditional single suction ports. Throughout the entire extraction process, no dust leaks from the container opening.

[0031] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A device for extracting powder, comprising a container (9), a suction pipe (8), and a first air inlet pipe (1); the first air inlet pipe (1) is disposed on the side wall of the suction pipe (8); characterized in that, It also includes a slider (7) and an airbag (6); the airbag (6) is located outside the slider (7); the slider (7) moves up and down along the suction pipe (8); the airbag (6) inflates and tightens the inner wall of the container (9).

2. The apparatus for extracting powder as described in claim 1, characterized in that, The slider (7) is provided with a bearing (2) and a connecting sleeve (3); two sets of bearings (2) are arranged in an upper and lower array; the connecting sleeve (3) is sleeved on the bearing (2); the airbag (6) is arranged on the connecting sleeve (3).

3. The apparatus for extracting powder as described in claim 2, characterized in that, The suction end of the suction pipe (8) is provided with a dust collection hood (4); the outlet end of the first air inlet pipe (1) is located above the dust collection hood (4); the outlet end of the first air inlet pipe (1) faces the side wall of the container (9).

4. The apparatus for extracting powder as described in claim 3, characterized in that, The end face of the suction pipe (8) extends out of the suction pipe (5); the side wall of the suction pipe (5) is provided with a suction port (12); the suction port (12) corresponds to the dust collection hood (4).

5. The apparatus for extracting powder as described in claim 4, characterized in that, A second air inlet pipe (10) is provided on the side wall of the suction pipe (8); the air outlet of the second air inlet pipe (10) is flush with the bottom of the dust suction pipe (5); the second air inlet pipe (10) is located on the inner side wall of the suction pipe (8).

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