A demagnetizing dust collecting device

Abstract

This invention provides a demagnetizing dust collection device, relating to the field of demagnetization technology, to solve the technical problem that vacuuming equipment in battery workshops is unable to effectively remove magnetic impurities. The demagnetizing dust collection device includes a floor brush, a dust cover, a nozzle, a vacuum cleaner body, and a first magnetic unit located on top of the floor brush. The floor brush and the vacuum cleaner body are connected via a suction pipe. The dust cover is located at the bottom of the floor brush and is foldable, with its edges designed to conform to the floor and / or wall to form a sealed space. The nozzle is located on the floor brush and faces into the sealed space, and is used to spray air into the sealed space. The first magnetic unit includes a housing and a magnetic block housed within the housing. The housing is attached to the top of the floor brush, and one end of the housing is hinged to the floor brush. The first magnetic unit is used to attract magnetic particles entering the floor brush. This demagnetizing dust collection device can effectively remove magnetic impurities in battery workshops.

Description

Technical Field

[0001] This utility model relates to the field of demagnetization technology, and in particular to a demagnetizing dust collection device. Background Technology

[0002] During the production of positive and negative electrode materials for batteries, the introduction of magnetic metal particles into the battery materials poses a significant safety risk after the batteries are processed. Therefore, it is necessary to demagnetize the production environment during the production of positive and negative electrode materials for batteries.

[0003] Current demagnetization operations largely rely on manual inspections, with workers walking around the workshop and using handheld magnetic rods to demagnetize suspicious areas. Since the positive and negative electrode materials of batteries are both powdered, some powder inevitably escapes and falls to the ground during production. Currently, conventional household or industrial vacuum cleaners are used to collect this dust, but some dust in hard-to-reach areas cannot be effectively collected. Furthermore, conventional vacuum cleaners lack demagnetization capabilities, making it difficult to effectively remove magnetic metal particles mixed in with the dust, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a demagnetizing dust collection device to solve the technical problem that dust collection equipment in battery workshops is difficult to effectively remove magnetic impurities.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a demagnetizing dust collection device, including a floor brush, a dust cover, a nozzle, a vacuum cleaner body, and a first magnetic unit disposed on the top of the floor brush. The floor brush and the vacuum cleaner body are connected through a suction tube.

[0007] The dust cover is located at the bottom of the floor brush. The dust cover can be expanded or retracted as the floor brush moves. The edge of the dust cover is used to fit against the ground and / or wall to form a sealed space.

[0008] The nozzle is disposed on the floor brush and faces into the enclosed space, and the nozzle is used to spray air into the enclosed space.

[0009] The first magnetic unit includes a housing and a magnetic block disposed within the housing. The housing is attached to the top of the floor brush, and one end of the housing is hinged to the floor brush. The first magnetic unit is used to attract magnetic particles that enter the floor brush.

[0010] According to at least one embodiment of the present invention, the demagnetizing dust collection device further includes a second magnetic unit, which is used to adsorb magnetic microparticles; a filter is provided inside the main body of the dust collector.

[0011] The second magnetic unit is disposed inside the vacuum cleaner body and is located between the inlet of the vacuum cleaner tube on the vacuum cleaner body and the filter.

[0012] According to at least one embodiment of the present invention, the second magnetic unit includes a plurality of magnetic rods, which are evenly spaced and arranged within the vacuum cleaner body.

[0013] According to at least one embodiment of the present invention, the surface of the magnetic rod has at least one helical groove, which is used to create turbulence for the passing airflow.

[0014] According to at least one embodiment of the present invention, the second magnetic unit includes a magnetic grid structure.

[0015] According to at least one embodiment of the present invention, the material of the second magnetic unit is neodymium iron boron, and the surface magnetic force of the second magnetic unit is greater than the surface magnetic force of the first magnetic unit.

[0016] According to at least one embodiment of the present invention, the dust cover is a foldable cover, the dust cover includes a spring frame and nylon fabric, the nylon fabric being laid on the spring frame;

[0017] Along the direction away from the floor brush, the cross-sectional area of ​​the dust cover gradually increases.

[0018] According to at least one embodiment of the present invention, the nozzle is a Laval nozzle, and the ratio of the diameter of the constriction section to the diameter of the expansion section of the nozzle is 1:(2-3).

[0019] According to at least one embodiment of the present invention, the demagnetizing dust collection device further includes an air compression device, an electromagnetic pulse valve, and a control device, wherein the nozzle is connected to the air compression device through the electromagnetic pulse valve;

[0020] The electromagnetic pulse valve is communicatively connected to the control device.

[0021] According to at least one embodiment of the present invention, the demagnetizing dust collection device further includes an audible and visual alarm device and a magnetic flux sensor disposed in the body of the vacuum cleaner.

[0022] The magnetic flux sensor is used to detect the magnetic field strength of the second magnetic unit, and both the audible and visual alarm device and the magnetic flux sensor are communicatively connected to the control device.

[0023] In one or more technical solutions provided in the exemplary embodiments of this utility model, at least one of the following beneficial effects can be achieved.

[0024] The exemplary embodiment of this utility model of a demagnetizing vacuum cleaner includes a floor brush, a dust cover, a nozzle, a vacuum cleaner body, and a first magnetic unit disposed on the top of the floor brush. The floor brush and the vacuum cleaner body are connected by a suction pipe. The dust cover is a foldable cover disposed at the bottom of the floor brush. The dust cover can be expanded or retracted as the floor brush moves. Its peripheral edge away from the floor brush can fit against the ground or wall to form a closed or semi-closed vacuuming space. At the junction of the wall and the ground where dust is heavily accumulated, the flexible edge of the dust cover can fit tightly against the corner gap. The nozzle can spray air in a directional manner to the dust accumulation area, so that the dust is raised in the sealed space formed by the dust cover, which is convenient for the vacuum cleaner body to efficiently capture and does not generate secondary dust.

[0025] Furthermore, the magnetic field generated by the first magnetic unit magnetizes and attracts magnetic metal particles in the dust. Then, the negative pressure of the vacuum cleaner body draws non-magnetic dust into the collection chamber through the suction pipe, while the magnetic particles are trapped in the floor brush area, preventing magnetic materials from being released back into the workshop with the exhaust air. When the magnetic particles attracted by the first magnetic unit on the floor brush reach a certain amount, the floor brush is moved out of the working area and into the maintenance area. The box is manually flipped from its attached position to the top of the floor brush to a vertical position. The magnetic force acting on the floor brush disappears, and the magnetic particles inside the floor brush automatically fall into the collection container by gravity. Based on this, the demagnetizing dust collection device can remove accumulated dust in the dead corners of the workshop; at the same time, it can achieve efficient separation of magnetic impurities and non-magnetic dust, improving the cleanliness of the battery workshop and thus enhancing the safety of the finished battery products. Attached Figure Description

[0026] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0027] Figure 1 This is a schematic diagram of the structure of a demagnetizing dust collection device according to an embodiment of the present invention;

[0028] Figure 2 This is a structural schematic diagram of a demagnetizing dust collection device according to another embodiment of the present invention.

[0029] Figure label:

[0030] 10. Dust cover;

[0031] 21. Floor brush; 22. Suction hose; 23. Vacuum cleaner body; 24. Filter; 25. Motor; 26. Cover;

[0032] 30. Nozzle;

[0033] 41. Box body; 42. Magnetic block;

[0034] 50. Second magnetic unit. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] Example 1

[0037] Figure 1 This is a structural schematic diagram of a demagnetizing dust collection device according to an embodiment of the present invention. (Reference) Figure 1 As shown, the demagnetizing vacuum cleaner provided in the exemplary embodiment of this utility model includes a floor brush 21, a dust cover 10, a nozzle 30, a vacuum cleaner body 23, and a first magnetic unit disposed on the top of the floor brush 21. The floor brush 21 and the vacuum cleaner body 23 are connected through a vacuum tube 22. The dust cover 10 is disposed at the bottom of the floor brush 21. The dust cover 10 is a foldable cover, and the edge of the dust cover 10 is used to fit against the ground and / or wall to form a sealed space. The nozzle 30 is disposed on the floor brush 21 and faces into the sealed space. The nozzle 30 is used to spray air into the sealed space. The first magnetic unit includes a box 41 and a magnetic block 42 disposed in the box 41. The box 41 is attached to the top outer side of the floor brush, and one end of the box 41 is hinged to the top of the floor brush 21.

[0038] In practical applications, when the floor brush 21 is operating normally in the working area, the housing 41 containing the magnetic block 42 is in a working state that is in contact with the top of the floor brush 21. The housing 41 can be kept in contact with the floor brush 21 by means of a snap fastener. At this time, the magnetic field generated by the magnetic block 42 can effectively attract magnetic particles passing through the inside of the floor brush 21, preventing them from entering the suction pipe with the airflow. When entering the maintenance area and needing to clean the magnetic particles attracted inside the floor brush 21, the operator can rotate the housing 41 around the hinge end to a vertical non-working state, causing the magnetic block 42 to detach from the attraction area. At this time, the collected magnetic particles will automatically fall into the collection container below under the action of gravity.

[0039] Understandably, when the floor brush 21 is cleaning surfaces with less dust, the dust cover 10 remains retracted to reduce resistance. When entering areas with accumulated dust, such as the junction of the floor and wall or crevices, the dust cover 10 unfolds, its outer edge fitting tightly against the floor and wall to form a sealed space. At this time, the nozzle 30 sprays air into the sealed space, lifting the dust in that area. Combined with the negative pressure generated by the vacuum cleaner body 23, the dust is drawn into the suction pipe 22 and filtered by the filter 24 before being discharged, effectively improving cleaning efficiency. Furthermore, the synergistic effect of airflow and negative pressure suction when the dust cover 10 is unfolded significantly enhances the ability to remove stubborn dust from corners and crevices. Simultaneously, due to the increased airflow turbulence within the sealed space, the dust's suspension time is prolonged, allowing the vacuum cleaner body 23's negative pressure system to more effectively capture micro-dust particles, further improving the thoroughness of the cleaning.

[0040] The foldable design between the dust cover 10 and the floor brush 21 allows the vacuuming device to adapt well to different terrains and cleaning environments. Combined with the first magnetic unit located on the top of the floor brush 21, magnetic particles passing through the brush 21 can be effectively adsorbed while removing dust, preventing them from escaping back into the workshop after passing through the filter 24. Based on this, the demagnetizing vacuuming device can prevent magnetic particles from being introduced into the positive and negative electrode powder materials used in battery manufacturing, thereby effectively preventing magnetic impurities from contaminating the battery materials and posing a safety risk to the finished battery.

[0041] Example 2

[0042] Based on Embodiment 1, the demagnetizing dust collection device of this embodiment further includes a second magnetic unit 50 disposed within the floor brush 21. This second magnetic unit has a higher magnetic field strength than the first magnetic unit and is used to capture finer magnetic particles, such as… Figure 2 As shown, Figure 2 This is a structural schematic diagram of a demagnetizing dust collection device according to another embodiment of the present invention.

[0043] In some embodiments, a filter 24 is provided inside the vacuum cleaner body 23, and a second magnetic unit 50 is provided inside the vacuum cleaner body 23 and located between the inlet of the suction pipe 22 on the vacuum cleaner body 23 and the filter 24.

[0044] In practical applications, after the first magnetic unit on the floor brush 21 initially adsorbs larger magnetic impurities, the suction airflow carries the remaining fine magnetic particles into the vacuum cleaner body 23. The second magnetic unit 50 then performs a second, highly efficient capture of these particles before they enter the filter 24. Through the synergistic effect of the two-stage magnetic units, the removal rate of magnetic impurities of different particle sizes is significantly improved, especially for submicron particles, where it has a stronger adsorption capacity. This implementation not only extends the service life of the filter 24 but also further reduces the risk of battery materials being contaminated by magnetic particles, ensuring that the cleanliness of the production environment meets the standards required by the battery manufacturing process.

[0045] It should be noted that, Figure 1 and Figure 2 These are all schematic diagrams, intended to clearly illustrate the various components. In the actual structure, the layout of the components may be adaptively adjusted according to the specific installation space and functional requirements, and the position of the second magnetic unit 50 can also be optimized to enhance adsorption efficiency.

[0046] Understandably, the filter 24 is located inside the vacuum cleaner body 23. A removable cover 26 covers the top of the vacuum cleaner body 23 for easy periodic cleaning of accumulated dust and replacement of the filter 24. A sealing ring is provided between the cover 26 and the vacuum cleaner body 23 to ensure airtightness. The motor 25 is located below the cover 26 to create a negative pressure chamber inside the vacuum cleaner body 23, driving airflow from the floor brush 21 through the suction pipe 22 into the cavity of the vacuum cleaner body 23; the air is further filtered by the filter 24, and then the clean air is discharged. The heat generated by the motor 25 during operation is dissipated through heat dissipation holes on the cover 26 to prevent excessive internal temperature from affecting component performance. The filter 24 adopts a multi-layer composite structure, which can effectively intercept non-magnetic dust and residual particles. Combined with the synergistic effect of two-stage magnetic units, the purification efficiency can be further improved.

[0047] In some embodiments, in the demagnetizing dust collection device of the exemplary embodiment of the present invention, the second magnetic unit 50 includes a plurality of magnetic rods, which are arranged at uniform intervals within the vacuum cleaner body 23; each magnetic rod is distributed in a linear array along the airflow direction to prolong the residence time of magnetic particles in the magnetic field and increase the capture probability.

[0048] For example, each magnetic rod has at least one helical groove on its surface, extending along the axial direction of the rod and surrounding its outer surface. This increases the turbulence effect when airflow passes through, making it easier for magnetic particles to detach from the airflow and enter the magnetic field's influence range. The helical groove design also guides particles along a specific path towards the magnetic pole enrichment region, further improving adsorption efficiency. The magnetic rods are made of high-coercivity rare-earth permanent magnet material, ensuring stable magnetic performance and resistance to demagnetization during long-term operation.

[0049] In other embodiments, the second magnetic unit 50 of the exemplary embodiment of the present invention includes a magnetic grid structure, which is composed of a plurality of intersecting magnetic strips to form a mesh magnetic field distribution, wherein the grid size can be controlled between 1-3 mm to balance airflow passage and magnetic particle interception efficiency.

[0050] In some embodiments, the second magnetic unit 50 is made of neodymium iron boron, and its surface magnetic strength is greater than or equal to 8000 Gauss, ensuring efficient capture of micron-sized magnetic impurities. The magnetic fields at the intersections of the grid structure superimpose, forming localized strong magnetic regions, further enhancing particle adsorption stability and preventing secondary dispersion. Simultaneously, the magnetic grid is detachably installed within the dust collector body for easy cleaning and maintenance, and maintains excellent magnetic properties and flow characteristics even after long-term use, adapting to continuous operation requirements under high dust concentration conditions.

[0051] Example 3

[0052] Based on Embodiment 2, the dust cover 10 and the nozzle 30 are optimized. Specifically, the dust cover 10 includes a spring frame and a nylon cloth, with the nylon cloth laid on the spring frame; the cross-sectional area of ​​the dust cover 10 gradually increases along the direction away from the floor brush 21.

[0053] The dust cover 10 is constructed with three layers of wear-resistant nylon fabric (0.5mm thick, with a PTFE non-stick coating) and an internal 304 stainless steel spring frame, allowing for conformal partial or overall expansion and contraction. The top of the dust cover 10 features a snap-on fastener that matches the edge groove of the floor brush 21. When unfolded, the bottom of the dust cover 10 can conform to the floor / wall (fitting gap ≤2mm), forming a closed suction space. It is understood that the spring frame can be composed of multiple different spring units, allowing each spring unit to autonomously adjust its deformation according to the contact surface shape, enhancing the dust cover 10's adaptability to complex floor contours and ensuring stable sealing during suction.

[0054] In some embodiments, the dust cover 10 has an overall conical structure, with the cross-sectional area gradually increasing along the direction away from the floor brush 21, effectively expanding the negative pressure coverage area and improving dust capture efficiency. The tilt angle of the conical structure is controlled between 15° and 30°, balancing spatial enclosure and airflow guidance effects, and reducing eddy current generation.

[0055] In some embodiments, the nozzle 30 is a Laval nozzle 30, and the ratio of the diameter of the converging section to the diameter of the expanding section of the nozzle 30 is 1:(2-3). This Laval nozzle 30 can achieve a high-speed jet when the airflow passes through it, which significantly enhances the stripping effect on dust particles attached to the ground or wall. The high-speed airflow forms a low-pressure zone at the outlet of the nozzle 30, which induces the surrounding air to flow faster, further improving the efficiency of dust particle lifting and suction.

[0056] For example, there can be multiple nozzles 30, which are evenly distributed around the circumference of the floor brush 21 to ensure that the jet airflow covers every corner of the working area of ​​the floor brush 21. The multiple nozzles 30 can work together to form a circumferential turbulent air curtain, effectively breaking the adhesion between dust particles and the surface and improving cleaning efficiency.

[0057] In some embodiments, the exemplary embodiment of the present invention, the demagnetizing dust collection device, further includes an air compression device, an electromagnetic pulse valve, and a control device. Each nozzle 30 is connected to the air compression device via the electromagnetic pulse valve; the electromagnetic pulse valve is communicatively connected to the control device.

[0058] In practical applications, the control device can control the electromagnetic pulse valve to open periodically according to the preset pulse jet frequency and duration, so that compressed air can drive the Laval nozzle 30 to work intermittently with millisecond-level instantaneous jet, realize high-frequency pulse jet, form air hammer effect, and blow up stubborn dust and particles in crevices on the ground.

[0059] In some embodiments, the demagnetizing dust collection device of the present invention further includes an audible and visual alarm device and a magnetic flux sensor disposed in the main body 23 of the vacuum cleaner. Both the audible and visual alarm device and the magnetic flux sensor are communicatively connected to the control device.

[0060] In actual operation, since the second magnetic unit 50 is located inside the vacuum cleaner body 23, it is difficult to directly observe the accumulation of magnetic particles adsorbed on it. The magnetic flux sensor can monitor the changes in the magnetic field strength of the second magnetic unit 50 in real time. When the adsorption amount reaches a preset threshold, the magnetic field strength decreases, and the control device triggers an audible and visual alarm to prompt the user to clean the adsorbed particles on the second magnetic unit 50. This implementation effectively avoids the decrease in the magnetic attraction ability of the second magnetic unit 50 due to the accumulation of magnetic particles, ensuring that the magnetic attraction function is always in a highly efficient working state.

[0061] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A demagnetizing dust collection device, characterized in that, It includes a floor brush, a dust cover, a nozzle, a vacuum cleaner body, and a first magnetic unit located on top of the floor brush. The floor brush and the vacuum cleaner body are connected through a suction tube. The dust cover is located at the bottom of the floor brush. The dust cover can be expanded or retracted as the floor brush moves. The edge of the dust cover is used to fit against the ground and / or wall to form a sealed space. The nozzle is disposed on the floor brush and faces into the enclosed space, and the nozzle is used to spray air into the enclosed space. The first magnetic unit includes a housing and a magnetic block disposed within the housing. The housing is attached to the top of the floor brush, and one end of the housing is hinged to the floor brush. The first magnetic unit is used to attract magnetic particles that enter the floor brush.

2. The demagnetizing dust collection device according to claim 1, characterized in that, The demagnetizing dust collection device also includes a second magnetic unit, which is used to adsorb magnetic microparticles; a filter is provided inside the main body of the vacuum cleaner. The second magnetic unit is disposed inside the vacuum cleaner body and is located between the inlet of the vacuum cleaner tube on the vacuum cleaner body and the filter.

3. The demagnetizing dust collection device according to claim 2, characterized in that, The second magnetic unit includes a plurality of magnetic rods, which are evenly spaced and arranged within the vacuum cleaner body.

4. The demagnetizing dust collection device according to claim 3, characterized in that, The surface of the magnetic rod has at least one spiral groove, which is used to create turbulence in the passing airflow.

5. The demagnetizing dust collection device according to claim 2, characterized in that, The second magnetic unit includes a magnetic grid structure.

6. The demagnetizing dust collection device according to claim 2, characterized in that, The second magnetic unit is made of neodymium iron boron, and the surface magnetic force of the second magnetic unit is greater than that of the first magnetic unit.

7. The demagnetizing dust collection device according to any one of claims 2-6, characterized in that, The dust cover is a foldable cover, and the dust cover includes a spring frame and nylon fabric, with the nylon fabric laid on the spring frame; Along the direction away from the floor brush, the cross-sectional area of ​​the dust cover gradually increases.

8. The demagnetizing dust collection device according to claim 7, characterized in that, The nozzle is a Laval nozzle, and the ratio of the diameter of the constriction section to the diameter of the expansion section of the nozzle is 1:2-3.

9. The demagnetizing dust collection device according to claim 7, characterized in that, The demagnetizing dust collection device also includes an air compressor, an electromagnetic pulse valve, and a control device, wherein the nozzle is connected to the air compressor via the electromagnetic pulse valve; The electromagnetic pulse valve is communicatively connected to the control device.

10. The demagnetizing dust collection device according to claim 9, characterized in that, The demagnetizing dust collection device also includes an audible and visual alarm device and a magnetic flux sensor installed in the main body of the vacuum cleaner. The magnetic flux sensor is used to detect the magnetic field strength of the second magnetic unit, and both the audible and visual alarm device and the magnetic flux sensor are communicatively connected to the control device.

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