Powder automatic circulating demagnetization equipment and system

Abstract

The utility model provides a kind of powder automatic circulation demagnetization equipment and system. Due to the setting of cleaning magnet bar, and the cleaning magnet bar permanent magnet segment has magnetism and is located in the blanking pipe, therefore, in the process of powder conveying downward, part of powder with magnetism is adsorbed by cleaning magnet bar, so that powder can be demagnetized, the setting of multilayer cleaning assembly can increase the demagnetization effect of powder. Cleaning magnet bar moves relative to cleaning ring, and the permanent magnet segment of cleaning magnet bar moves from blanking pipe to waste pipe. When cleaning magnet bar continues to move left, the permanent magnet segment moves relative to cleaning ring. Cleaning ring limits and blocks the powder on the permanent magnet segment from moving with cleaning magnet bar, until the non-magnetic segment on the right side of cleaning magnet bar enters the waste pipe, the powder is no longer adsorbed by cleaning magnet bar, so as to fall downward, and then discharge from waste outlet, so the demagnetization efficiency and quality of powder can be quickly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon nanotube powder production equipment, and in particular to an automatic circulating demagnetizing equipment and system for powder. Background Technology

[0002] Carbon nanotube powder, as a high-performance nanomaterial, is widely used in new energy, composite materials, electronic devices, and other fields. Due to its special electrical, thermal, and mechanical properties, the purity requirements for the powder are extremely high, especially the content of magnetic impurities, which must be strictly controlled below 1 ppm; otherwise, it may affect the electrical performance of the product or cause downstream applications to fail.

[0003] Currently, demagnetization of carbon nanotube powder mainly relies on permanent magnet separators or electromagnetic demagnetizing equipment. Traditional permanent magnet separators use a fixed magnetic rod structure; as the powder flows through, the magnetic material is adsorbed onto the surface of the magnetic rod. However, this requires manual periodic shutdowns for cleaning, which is not only inefficient but also prone to secondary pollution during the cleaning process. While electromagnetic demagnetizing equipment can automatically demagnetize and remove impurities, it is expensive, energy-intensive, and has limited adsorption effect on ultrafine powders (such as carbon nanotubes), making it difficult to meet high purity requirements.

[0004] While existing automatic demagnetizing devices can achieve online cleaning of magnetic rods, the following problems still exist when processing multi-layered powders:

[0005] Incomplete cleaning – some magnetic impurities may remain on the surface of the magnetic rod, leading to secondary mixing with the powder;

[0006] Low waste removal efficiency – Insufficient precision in the matching between the cleaning mechanism and the magnetic rod affects the waste removal effect;

[0007] Unstable demagnetization effect – when multiple layers of powder flow through, some areas have insufficient magnetic coverage, resulting in local magnetic impurities remaining.

[0008] Therefore, there is an urgent need for a high-efficiency, automated demagnetizing device that can continuously adsorb and clean magnetic impurities during the transport of carbon nanotube powder, ensuring that the content of magnetic materials remains stable below 1 ppm, while improving demagnetizing efficiency and automation to meet the quality requirements of high-end nanomaterials. Utility Model Content

[0009] In view of the above problems, this utility model is proposed to provide an automatic circulating demagnetizing device for powder that overcomes or at least partially solves the above problems, and can solve the problem of low demagnetizing efficiency of carbon nanotube powder, thereby improving the demagnetizing efficiency and effect of carbon nanotube powder.

[0010] Specifically, this utility model provides an automatic circulating demagnetizing device for powder, which includes:

[0011] The feeding pipe is vertically arranged, with the upper end being the feeding port and the lower end being the feeding port;

[0012] Waste pipe, which is vertically fixed to the left side of the feed pipe, with a waste discharge port at the lower end;

[0013] Multiple cleaning components are evenly distributed vertically on the feed pipe and the waste pipe. Each cleaning component includes multiple cleaning magnetic rods and multiple cleaning rings. Each cleaning magnetic rod includes two non-magnetic sections and a permanent magnet section located between the two non-magnetic sections. The cleaning magnetic rods are horizontally arranged and slidably inserted into the feed pipe and the waste pipe from left to right, with the permanent magnet section located inside the feed pipe. The multiple cleaning magnetic rods are evenly distributed in the front-back direction. Each cleaning ring is located inside the waste pipe, and each cleaning ring is slidably fitted onto another cleaning ring and located on the far right.

[0014] Multiple drive linkage components, each drive linkage component is connected to multiple cleaning magnetic rods of a group of cleaning components, for driving the multiple cleaning magnetic rods to move synchronously left and right.

[0015] Optionally, the multiple cleaning components are multiple first cleaning groups and multiple second cleaning groups; the multiple first cleaning groups and multiple second cleaning groups are alternately arranged; one of the cleaning magnetic rods of the second cleaning group is located on the center line of two adjacent cleaning magnetic rods of the first cleaning group.

[0016] Optionally, the drive linkage component includes a linkage baffle and a thrust cleaning cylinder;

[0017] The left end of the cleaning magnetic rod is located outside the waste pipe; the linkage baffle is connected to the left end of the multiple cleaning magnetic rods, and is used to drive the multiple cleaning magnetic rods of each cleaning assembly to move synchronously; the thrust cleaning cylinder is fixedly installed on the feed pipe, and the output shaft of the thrust cleaning cylinder is fixedly connected to the linkage baffle.

[0018] Optionally, the first cleaning group has five cleaning magnetic rods; the second cleaning group has four cleaning magnetic rods.

[0019] Optionally, the lower end of the feeding tube is provided with a transparent observation port; the observation port is located above the feeding port.

[0020] This utility model provides an automatic circulating demagnetization system for powder, which includes:

[0021] A pulse dust collector, wherein the pulse dust collector is connected to a negative pressure fan;

[0022] The demagnetizing equipment is any one of the automatic circulating demagnetizing equipment for powder described above; the feed inlet at the upper end of the feed pipe of the demagnetizing equipment is connected to the pulse dust collector;

[0023] The receiving bin is connected to the lower end of the discharge port of the discharge pipe of the demagnetizing equipment.

[0024] Optionally, a windproof feeder is provided between the demagnetizing device and the feeding pipe; an electromagnetic demagnetizer is provided between the demagnetizing device and the receiving hopper.

[0025] Optionally, the automatic powder circulation demagnetization system also includes:

[0026] The feeding pipe is connected at its lower end to the receiving hopper and at its upper end to the pulse dust collector.

[0027] In this automatic powder circulation demagnetizing device, due to the arrangement of the cleaning magnetic rod, and the fact that the permanent magnet section of the cleaning magnetic rod is magnetic and located inside the feed pipe, some of the magnetic powder is attracted by the cleaning magnetic rod during the downward conveying process, thereby demagnetizing the powder. The multi-layer cleaning assembly enhances the demagnetizing effect. Simultaneously, the cleaning ring and the cleaning magnetic rod work in close coordination. When the cleaning magnetic rod moves, the cleaning ring moves to the left with it until it reaches the leftmost side of the waste pipe. As the cleaning magnetic rod continues to move to the left, it moves relative to the cleaning ring, and the permanent magnet section of the cleaning magnetic rod moves from the feed pipe into the waste pipe. When the cleaning magnetic rod continues to move to the left, the permanent magnet section moves relative to the cleaning ring. The cleaning ring restricts the movement of powder on the permanent magnet section along with the cleaning magnetic rod until the non-magnetic section on the right side of the cleaning magnetic rod enters the waste pipe. The powder is no longer attracted by the cleaning magnetic rod and falls downwards, and is then discharged from the waste outlet. Therefore, it can quickly improve the demagnetization efficiency and demagnetization quality of the powder.

[0028] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0029] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0030] Figure 1 This is a schematic structural diagram of an automatic circulating demagnetizing device for powder according to an embodiment of the present invention;

[0031] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0032] Figure 3 This is a schematic side view of an automatic circulating demagnetizing device for powder according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic structural diagram of a cleaning magnetic rod in an automatic powder circulation demagnetizing device according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic structural diagram of an automatic circulating demagnetizing system for powder according to an embodiment of the present invention.

[0035] In the diagram: 100, feeding pipe; 110, observation port; 120, feed inlet; 130, discharge port; 200, waste pipe; 210, waste outlet; 300, cleaning assembly; 310, cleaning magnetic rod; 311, permanent magnet section; 312, non-magnetic section; 320, cleaning ring; 330, first cleaning group; 340, second cleaning group; 400, drive linkage; 410, linkage baffle; 420, thrust cleaning cylinder; 500, pulse dust collector; 510, negative pressure fan; 600, receiving hopper; 700, windproof feeder; 800, electromagnetic demagnetizer; 900, feeding pipe. Detailed Implementation

[0036] The following reference Figures 1 to 5 This invention describes an automatic circulating demagnetizing device and system for powder according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0037] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Figure 1 This is a schematic structural diagram of an automatic circulating demagnetizing equipment for powder, such as... Figure 1 As shown, and with reference Figures 2 to 5 This utility model provides an automatic circulating demagnetizing device for powder, which includes a feeding pipe 100, a waste pipe 200, multiple cleaning components 300, and multiple drive linkage components 400. The feeding pipe 100 is vertically arranged, with a feed inlet 120 at the upper end and a discharge outlet 130 at the lower end. The waste pipe 200 is vertically arranged and fixed to the left side of the feeding pipe 100, with a waste discharge outlet 210 at the lower end.

[0041] Multiple self-cleaning components 300 are evenly distributed vertically on the feed pipe 100 and the waste pipe 200. Each component includes multiple cleaning magnetic rods 310 and multiple cleaning rings 320. Each cleaning magnetic rod 310 includes two non-magnetic sections 312 and a permanent magnet section 311 located between the two non-magnetic sections 312. The cleaning magnetic rods 310 are horizontally positioned and slidably inserted into the feed pipe 100 and waste pipe 200 from left to right, with the permanent magnet section 311 located inside the feed pipe 100. The multiple cleaning magnetic rods 310 are evenly distributed in the front-to-back direction. Each cleaning ring 320 is located inside the waste pipe 200, with each cleaning ring 320 slidably fitted onto another cleaning ring 320 and located on the far right.

[0042] Each drive linkage 400 component is connected to multiple cleaning magnetic rods 310 of a set of cleaning components 300, and is used to drive the multiple cleaning magnetic rods 310 to move synchronously left and right.

[0043] Specifically, the powder is conveyed vertically downwards from the feed inlet 120 under the influence of gravity along the discharge pipe 100. Due to the presence of the cleaning magnetic rod 310, and the fact that the permanent magnet section 311 of the cleaning magnetic rod 310 is magnetic and located inside the discharge pipe 100, some of the magnetic powder is attracted by the cleaning magnetic rod 310 during the downward conveying process, thereby demagnetizing the powder. The multi-layer cleaning assembly 300 further enhances the demagnetization effect on the powder.

[0044] Furthermore, the cleaning ring 320 and the cleaning magnetic rod 310 work closely together. When the cleaning magnetic rod 310 moves, the cleaning ring 320 moves to the left along with it until it is at the leftmost side of the waste pipe 200. The cleaning magnetic rod 310 continues to move to the left, moving relative to the cleaning ring 320. Simultaneously, the permanent magnet section 311 of the cleaning magnetic rod 310 moves from the feed pipe 100 into the waste pipe 200. As the cleaning magnetic rod 310 continues to move to the left, the permanent magnet section 311 moves relative to the cleaning ring 320. The cleaning ring 320 restricts and blocks the powder on the permanent magnet section 311 from moving with the cleaning magnetic rod 310 until the non-magnetic section 312 on the right side of the cleaning magnetic rod 310 enters the waste pipe 200. The powder is no longer attracted by the cleaning magnetic rod 310 and falls downwards, eventually being discharged from the waste outlet 210. Therefore, this rapidly improves the demagnetization efficiency and quality of the powder.

[0045] Furthermore, the two non-magnetic sections 312 of the cleaning magnetic rod 310 are located on the left and right sides of the permanent magnet section 311, respectively. In the initial state, the non-magnetic section 312 on the left is located inside the waste pipe 200. This arrangement ensures that the magnetic powder cleaned above the cleaning magnetic rod 310 will not be attracted by the cleaning magnetic rod 310 when it falls downwards. The non-magnetic section 312 on the right is located on the right side of the feed pipe 100.

[0046] Furthermore, the diameter of the hole through which the cleaning magnetic rod 310 passes between the feed pipe 100 and the waste pipe 200 is larger than that of the cleaning magnetic rod 310, so that the powder on the permanent magnet section 311 will not be scraped off by the hole when the cleaning magnetic rod 310 moves to the left.

[0047] During operation, the powder to be demagnetized enters the feed pipe 100 through the feed hole. The powder flows downwards from the cleaning magnetic rod 310 through the permanent magnet section 311, where it is attracted to the magnetic material. When too much powder is attracted to the permanent magnet section 311 of the cleaning magnetic rod 310 of a certain cleaning component 300, the corresponding linkage component is activated. This linkage component drives multiple cleaning magnetic rods 310 of the cleaning component 300 to move synchronously to the left, and the cleaning ring 320 moves to the left along with the cleaning magnetic rods 310 until the cleaning ring 320 is at the leftmost side of the waste pipe 200. The cleaning magnetic rod 310 continues to move to the left. At this time, the cleaning magnetic rod 310 moves relative to the cleaning ring 320. At the same time, the permanent magnet section 311 of the cleaning magnetic rod 310 moves from the feed pipe 100 into the waste pipe 200. When the cleaning magnetic rod 310 continues to move to the left, the permanent magnet section 311 moves relative to the cleaning ring 320. The cleaning ring 320 restricts and blocks the powder on the permanent magnet section 311 from moving with the cleaning magnetic rod 310 until the non-magnetic section 312 on the right side of the cleaning magnetic rod 310 enters the waste pipe 200. The powder is no longer attracted by the cleaning magnetic rod 310 and falls downwards, and is then discharged from the waste outlet 210.

[0048] Subsequently, the linkage component drives the cleaning magnetic rod 310 to reset to the right. The movement of the cleaning magnetic rod 310 to the right drives the cleaning ring 320 to the right side of the waste pipe 200 until the cleaning magnetic rod 310 moves to the initial position.

[0049] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the multiple cleaning components 300 are multiple first cleaning groups 330 and multiple second cleaning groups 340. The multiple first cleaning groups 330 and multiple second cleaning groups 340 are arranged alternately, and one cleaning magnetic rod 310 of the second cleaning group 340 is located on the center line of two adjacent cleaning magnetic rods 310 of the first cleaning group 330.

[0050] Specifically, the cleaning magnetic rods 310 of the first cleaning group 330 and the second cleaning group 340 are arranged alternately, which can increase the basic probability of the cleaning magnetic rods 310 contacting the powder and prevent the powder from falling directly into the discharge port 130 through the gap between the two cleaning magnetic rods 310, thereby improving the adsorption effect of the cleaning magnetic rods 310 on the powder and improving the demagnetization efficiency.

[0051] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the drive linkage 400 assembly includes a linkage baffle 410 and a thrust cleaning cylinder 420. The left end of the cleaning magnetic rod 310 is located outside the waste pipe 200. The linkage baffle 410 is connected to the left end of multiple cleaning magnetic rods 310, which is used to drive the multiple cleaning magnetic rods 310 of each cleaning assembly 300 to move synchronously. The thrust cleaning cylinder 420 is fixedly mounted on the discharge pipe 100, and the output shaft of the thrust cleaning cylinder 420 is fixedly connected to the linkage baffle 410.

[0052] Specifically, there are two thrust cleaning cylinders 420, located on the front and rear sides of the feed pipe 100 respectively.

[0053] In some embodiments of this utility model, such as Figure 3 As shown, the first cleaning group 330 has five cleaning magnetic rods 310, and the second cleaning group 340 has four cleaning magnetic rods 310. Specifically, the cleaning assembly 300 has fifteen groups.

[0054] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, a transparent observation port 110 is provided at the lower end of the feeding pipe 100, and the observation port 110 is located above the feeding port 130. Specifically, the observation port 110 is used to observe the state of the powder, so as to intuitively and quickly detect and obtain powder information.

[0055] This utility model provides an automatic circulating demagnetization system for powder, such as... Figure 5 As shown, the automatic powder circulation demagnetization system includes a pulse dust collector 500, a demagnetizing device, and a receiving hopper 600.

[0056] The pulse dust collector 500 is connected to a negative pressure fan 510, and the demagnetizing device is any of the automatic powder circulation demagnetizing devices described in the above embodiments. The upper inlet 120 of the discharge pipe 100 of the demagnetizing device is connected to the pulse dust collector 500. The receiving hopper 600 is connected to the lower discharge port 130 of the discharge pipe 100 of the demagnetizing device. Specifically, the pulse dust collector 500 has a feeding hopper, which can perform pulse dust removal on the material, and the negative pressure fan 510 draws the powder into the hopper. Further, the inlet 120 is connected to the feeding hopper.

[0057] In some embodiments of this utility model, such as Figure 5 As shown, a windproof feeder 700 is installed between the demagnetizing equipment and the feeding pipe 100, and an electromagnetic demagnetizer 800 is installed between the demagnetizing equipment and the receiving hopper 600. Specifically, the windproof feeder 700 is used to uniformly feed the powder in the feeding hopper into the feeding pipe 100. The electromagnetic demagnetizer 800 further demagnetizes the powder discharged from the discharge port 130. Therefore, the function of the electromagnetic demagnetizer 800 is to further demagnetize the residual magnetic powder in the powder that has already passed through the demagnetizing equipment, so as to ensure the demagnetization effect of the powder.

[0058] In some embodiments of this utility model, such as Figure 5As shown, the automatic powder circulation demagnetization system also includes a feeding pipe 900, the lower end of which is connected to the receiving hopper 600, and the upper end of which is connected to the pulse dust collector 500. The feeding pipe 900 connects the receiving hopper 600 and the feed hopper of the pulse dust collector 500, thereby enabling the powder to undergo circulation demagnetization treatment.

[0059] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A powder automatic circulation demagnetization apparatus characterized by comprising: include: The feeding pipe is vertically arranged, with the upper end being the feeding port and the lower end being the feeding port; Waste pipe, which is vertically fixed to the left side of the feed pipe, with a waste discharge port at the lower end; Multiple cleaning components are evenly distributed vertically on the feed pipe and the waste pipe. Each cleaning component includes multiple cleaning magnetic rods and multiple cleaning rings. Each cleaning magnetic rod includes two non-magnetic sections and a permanent magnet section located between the two non-magnetic sections. The cleaning magnetic rods are horizontally arranged and slidably inserted into the feed pipe and the waste pipe from left to right, with the permanent magnet section located inside the feed pipe. The multiple cleaning magnetic rods are evenly distributed in the front-back direction. Each cleaning ring is located inside the waste pipe, and each cleaning ring is slidably fitted onto another cleaning ring and located on the far right. Multiple drive linkage components, each drive linkage component is connected to multiple cleaning magnetic rods of a group of cleaning components, for driving the multiple cleaning magnetic rods to move synchronously left and right.

2. The automatic circulating demagnetizing equipment for powder according to claim 1, characterized in that, The multiple cleaning components are a plurality of first cleaning groups and a plurality of second cleaning groups; the plurality of first cleaning groups and the plurality of second cleaning groups are alternately arranged; one of the cleaning magnetic rods of the second cleaning group is located on the center line of two adjacent cleaning magnetic rods of the first cleaning group.

3. The automatic circulating demagnetizing equipment for powder according to claim 1, characterized in that, The drive linkage component includes a linkage baffle and a thrust cleaning cylinder; The left end of the cleaning magnetic rod is located outside the waste pipe; the linkage baffle is connected to the left end of the multiple cleaning magnetic rods, and is used to drive the multiple cleaning magnetic rods of each cleaning assembly to move synchronously; the thrust cleaning cylinder is fixedly installed on the feed pipe, and the output shaft of the thrust cleaning cylinder is fixedly connected to the linkage baffle.

4. The automatic circulating demagnetizing equipment for powder according to claim 2, characterized in that, The first cleaning group has five cleaning magnetic rods; the second cleaning group has four cleaning magnetic rods.

5. The automatic circulating demagnetizing equipment for powder according to claim 1, characterized in that, The lower end of the feeding tube is provided with a transparent observation port; the observation port is located above the feeding port.

6. A powder automatic circulation demagnetization system characterized by comprising: include: A pulse dust collector, wherein the pulse dust collector is connected to a negative pressure fan; The demagnetizing device is any one of the automatic circulating demagnetizing devices for powder as described in claims 1-5; the feed inlet at the upper end of the feed pipe of the demagnetizing device is connected to the pulse dust collector; The receiving bin is connected to the lower end of the discharge port of the discharge pipe of the demagnetizing equipment.

7. The automatic circulating demagnetization system for powder according to claim 6, characterized in that, A windproof feeder is installed between the demagnetizing equipment and the feeding pipe; an electromagnetic demagnetizer is installed between the demagnetizing equipment and the receiving hopper.

8. The powder automatic circulation demagnetization system according to claim 6, wherein Also includes: The feeding pipe is connected at its lower end to the receiving hopper and at its upper end to the pulse dust collector.

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