CN208049621U - A kind of metallic dust filter - Google Patents

Abstract

The utility model discloses a metal dust filter, which comprises a magnetic rod group composed of a plurality of magnetic rods, an annular upper end cover and an annular lower end cover, and the upper end cover and the lower end cover are evenly provided with corresponding Mounting holes, the two ends of the magnetic rods in the magnetic rod group are respectively fixedly installed in the corresponding mounting holes of the upper end cover and the lower end cover; the outer filter cotton is provided on the outer side of the magnetic rod group, and the inner layer of filter cotton. The metal dust filter of the utility model, while the magnetic bar removes the metal dust, the double-layer filter cotton can effectively filter the dust, so that the dust degree of the air entering the production workshop is reduced, and the harm of the workshop dust to the battery is reduced, thus reducing accidents The incidence rate is high, maintaining a good environment in the workshop, and the metal dust filter has a simple structure and is easy to use.

Description

A metal dust filter

technical field

The utility model belongs to the application field of filter technology in production and processing workshops, in particular to a metal dust filter.

Background technique

There are various reasons for battery explosion and fire, but the most common is the explosion caused by dust and metal particles. They all have a common cause of explosion, that is, the internal short circuit caused by dust or metal particles, which then causes the internal intense discharge and energy accumulation of the battery, which leads to the explosion and fire of the battery. The economic loss and personal injury caused by battery explosion and fire are immeasurable. Therefore, during the entire battery production process, the dust level in the workshop must be controlled within a certain range, and the drying air vents in the workshop are an important source of metal dust. If the dust in the drying air vent can be well controlled, the dust level in the battery production workshop can be greatly reduced, and the accident rate in the battery production process can be reduced.

Dust has certain energy like other substances. Due to the small particle size and large surface area of dust, its surface energy also increases. A piece of 1 gram of coal has a surface area of only 5 to 6 c㎡, while 1 gram of coal dust has a surface area of up to 2 ㎡. The mixture of dust and air can form a flammable mixed gas. If it encounters an open flame or a high-temperature object, it is easy to catch fire. The combustion process is completed in an instant, and a large amount of heat energy is released, which makes the combustion gas suddenly rise, and the volume expands violently, forming a very high expansion. pressure. The existing dust removal methods are mainly filter cartridge dust removal and filter bag dust removal. The filter cartridge dust removal has V-shaped wrinkles on the surface of the filter element, so the wrinkles are sharp and easy to wear when the compressed air is repeatedly cleaned. The V-shaped pleats have a small space and will cause dust to easily remain or accumulate in the V-shaped place to block the filter cartridge, increase the filter resistance, reduce the filter area, make the filter element more likely to be damaged, and the relative frequency of replacement will also increase. The frequency and the price of the filter cartridge are higher, so the follow-up maintenance cost of the filter cartridge dust removal will definitely be higher.

Compared with the bag-type dust removal, for different types of gases, the corresponding type of bag should be selected, and the bag needs to be replaced frequently, and the consumption of the bag is relatively large. When collecting dusty gas with high humidity, moisturizing measures should be taken to avoid "sticky bags" due to condensation. Therefore, bag dust removal gas has certain requirements for the humidity of the gas.

In the industry, the filters used by various batteries are uneven, and most of them cannot meet the filtering requirements of metal dust. Metal dust has the characteristics of small particle size (about 100nm~500nm in diameter). In China, such equipment that can remove metal dust also exists, but it has the characteristics of large size (covering an area of about 30 square meters) and high cost, so it cannot be applied on a large scale, and the dust removal efficiency of metal dust is low. Such dust removal equipment also exists in Japan and South Korea. The dust removal efficiency is relatively high, but the cost is expensive.

At present, the workshop cannot effectively filter the metal dust at the air inlet of the drying air, resulting in a high dust level in the workshop, causing many unfavorable factors to the production of batteries, and easily causing a short circuit of the battery.

Utility model content

In order to solve the deficiencies of the prior art, the utility model provides a metal dust filter. While the magnetic rod removes the metal dust, the double-layer filter cotton can effectively filter the dust other than the metal dust, so that it can enter the production workshop Air dustiness is reduced.

The technical effect to be achieved by the utility model is realized through the following schemes:

A metal dust filter, characterized in that:

It includes a magnetic rod group composed of a plurality of magnetic rods, an annular upper end cover and an annular lower end cover. The upper end cover and the lower end cover are evenly provided with corresponding installation holes along their respective annular surfaces. The magnetic rods in the magnetic rod group The two ends are respectively fixedly installed in the corresponding mounting holes of the upper end cover and the lower end cover;

An outer layer of filter cotton is provided on the outside of the magnetic rod group, and an inner layer of filter cotton is provided on the inside.

The magnetic bar is fixedly connected to the upper end cover and the lower end cover with screws through the installation hole, and filter cotton is arranged on the inner and outer sides of the magnetic bar group to filter the dust in the air entering the production workshop. The group adsorbs metal dust in the air, reducing the dustiness of the air entering the production workshop.

Further, the metal dust filter also includes a sealing cover matched with the upper end cover, the sealing cover is engaged with the upper end cover, and a handle is provided on the sealing cover.

The sealing cover seals the annular opening of the upper end cover, so that air enters the production workshop from the surrounding sides of the metal dust filter. The sealing cover is clamped with the upper end cover, and the sealing cover can be taken off when replacing the filter cotton.

Further, the distance between the adjacent magnetic rods is 20mm-45mm.

Further, the magnetic bar is an electromagnet assembly.

Further, the length of the magnetic bar is 100mm-140mm.

The magnetic rod is connected with the power supply, and the magnetic rod is energized, and the magnetic rod is magnetic to absorb the attached metal dust in the air. When the magnetic bar is not powered on, it is not magnetic, but the filter cotton inside and outside the magnetic bar can still filter the dust in the air.

Further, both ends of the magnetic bar are provided with mounting threaded holes for fixed connection with the upper end cover and the lower end cover.

Further, a mounting plate is provided at the lower end of the lower end cover, and mounting holes are provided at four corners of the mounting plate.

Further, the outer layer of filter cotton is a HEPA high-efficiency filter with a filtration accuracy of 0.3 μm.

Further, the inner layer of filter cotton is a high-efficiency fiber filter with a filtration accuracy of 0.5 μm and a grade of 50,000.

The inner filter cotton mainly filters dust larger than 0.5 μm, and the outer filter cotton mainly filters dust smaller than 0.5 μm. Dry air comes in from the lower end cover, passes through the inner filter cotton, the magnetic bar group and the outer filter cotton in sequence, and finally enters the production workshop.

Further, the material of the lower end cover, the upper end cover and the sealing cover is stainless steel.

Stainless steel is not easy to rust, which can reduce the maintenance rate of the metal dust filter and prolong the service life of the metal filter.

The utility model has the following advantages: the metal dust filter of the utility model removes the metal dust with the magnetic rod, and at the same time, the double-layer filter cotton can effectively filter the dust, so that the dust degree of the air entering the production workshop is reduced, and the impact of the workshop dust on the battery is reduced. harm, thereby reducing the incidence of accidents and maintaining a good environment in the workshop, and the metal dust filter has a simple structure and is easy to use.

Description of drawings

Fig. 1 is the structural representation of the utility model metal dust filter;

Fig. 2 is the structural representation of magnetic bar in the utility model;

Fig. 3 is a schematic structural view of the middle and lower end caps of the present invention;

Fig. 4 is the structural representation of upper end cover in the utility model;

Fig. 5 is the structural representation of inner layer filter cotton in the utility model;

Fig. 6 is the structural representation of outer layer filter cotton in the utility model;

Fig. 7 is the structural representation of sealing cover in the utility model;

Description of accompanying drawings: 1, magnetic rod; 2, lower end cover; 3, upper end cover; 4, inner layer filter cotton; 5, outer layer filter cotton; 6, sealing cover; 101, installation threaded hole; 201, mounting plate; 202; the mounting hole on the mounting plate, 203, the mounting hole of the lower end cover; 301, the mounting hole of the upper end cover; 601, the handle.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

In this embodiment, the metal dust filter, as shown in Figure 1, includes a magnetic rod group consisting of a plurality of magnetic rods 1, an annular upper end cover 3 and an annular lower end cover 2, and the upper end cover 3 and the lower end cover 2 are along the Corresponding mounting holes 203 and 301 are uniformly provided on the respective annular surfaces, and the two ends of the magnetic rods in the magnetic rod group are respectively fixedly installed in the corresponding mounting holes 203 and 301 of the upper end cover 3 and the lower end cover 2 .

An outer layer of filter cotton 5 is provided on the outside of the magnetic rod group, and an inner layer of filter cotton 4 is provided on the inside.

In this embodiment, the magnetic bar 1 is fixedly connected with the upper end cover 3 and the lower end cover 2 through the mounting holes, and the inner and outer sides of the magnetic bar group are provided with filter cotton to filter the dust in the air entering the production workshop. Adsorption of metal dust in the air reduces the dustiness of the air entering the production workshop.

The metal dust filter also includes a sealing cover 6 matching the upper end cover, the sealing cover is engaged with the upper end cover 3 , and a handle 601 is provided on the sealing cover. The sealing cover seals the annular opening of the upper end cover, so that the air enters the production workshop from the surrounding sides of the metal dust filter. The sealing cover is clamped with the upper end cover, and the sealing cover can be taken off when replacing the filter cotton.

The distance between adjacent magnetic rods is 20mm-45mm, the magnetic rods are electromagnet components, and the length of the magnetic rods is 100mm-140mm. The magnetic bar is connected with the power supply, and the magnetic bar is electrified, and the magnetic bar is magnetic to absorb the attached metal dust in the air. When the magnetic bar is not powered on, it is not magnetic, but the filter cotton inside and outside the magnetic bar can still filter the dust in the air. As shown in Figure 2, the two ends of the magnetic bar are provided with mounting threaded holes 101 for fixed connection with the upper end cover and the lower end cover.

As shown in Figure 3, a mounting plate 201 is provided at the lower end of the lower end cover, and mounting holes 202 are provided at the four corners of the mounting plate. In this embodiment, the mounting plate is convenient for installing the metal dust filter at the drying tuyere of the production workshop, and the metal dust filter is fixedly connected to the drying tuyere through the mounting hole 202 on the mounting plate 201 with screws.

The outer layer of filter cotton 5 is a HEPA high-efficiency filter screen with a filtration accuracy of 0.3 μm; the inner layer of filter cotton 4 is a high-efficiency fiber filter screen with a filtration accuracy of 0.5 μm and a grade of 50,000. The inner filter cotton 4 mainly filters dust larger than 0.5 μm, and the outer filter cotton mainly filters dust smaller than 0.5 μm. The drying wind comes in from the lower end cover 2, passes through the inner filter cotton 4, the magnetic bar group 1 and the outer filter cotton 5 in turn, and finally enters the production workshop.

The lower end cover 2, the upper end cover 3 and the sealing cover 6 are made of stainless steel. Stainless steel is not easy to rust, which can reduce the maintenance rate of the metal dust filter and prolong the service life of the metal filter.

Working principle: Install the metal dust filter at the mouth of the drying pipe in the production workshop. The wind enters the filter from the annular opening of the metal lower end cover 2. Since the sealing cover 6 seals the annular opening of the upper end cover 3, the wind can only pass through the inner Layer filter cotton 4, magnetic rod group 1 and outer layer filter cotton 5, finally enter the production workshop. The inner layer of filter cotton mainly filters the dust larger than 0.5 μm in the air. One set of magnetic rods is energized to magnetically absorb the metal dust in the air, and the air passes through the outer layer of filter cotton to filter out the dust smaller than 0.5 μm, so as to further purify and enter the production space air. After the metal dust filter was used for a period of time, a large amount of dust was absorbed in the outer layer filter cotton 5 and the inner layer filter cotton 4. At this time, the sealing cover 6 was opened to replace the outer layer filter cotton and the inner layer filter cotton.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and not to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should It is understood that modifications or equivalent replacements can still be made to the technical solutions of the embodiments of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. a kind of metallic dust filter, it is characterised in that：

Include magnetic bar group, annular upper end lid and annular bottom end cover, the upper end cover and the bottom end cover being made of multiple magnetic bars It is uniformly provided with corresponding mounting hole along respective annular surface, the magnetic bar both ends in the magnetic bar group are fixed at respectively In the upper end cover and the corresponding mounting hole of bottom end cover；

Outer filter cotton is equipped on the outside of the magnetic bar group, inside is equipped with internal layer filter cotton.

2. metallic dust filter as described in claim 1, which is characterized in that the metallic dust filter further includes and upper end The sealing cover to match is covered, the sealing cover is clamped with the upper end cover, and the sealing cover is equipped with handle.

3. metallic dust filter as described in claim 1, which is characterized in that the adjacent magnetic bar spacing is 20-45mm.

4. metallic dust filter as described in claim 1, which is characterized in that the magnetic bar is electromagnet assembly.

5. metallic dust filter as described in claim 1, which is characterized in that the length of the magnetic bar is 100-140mm.

6. metallic dust filter as described in claim 1, which is characterized in that the magnetic bar both ends are equipped with installation threaded hole.

7. metallic dust filter as described in claim 1, which is characterized in that the bottom end cover low side is equipped with mounting plate, described Mounting plate four corners are equipped with mounting hole.

8. metallic dust filter as described in claim 1, which is characterized in that the outer filter cotton is HEPA high efficiency filters Net, 0.3 μm of filtering accuracy.

9. metallic dust filter as described in claim 1, which is characterized in that the internal layer filter cotton filters for high-efficiency fiber Net, 0.5 μm, 50,000 grades of filtering accuracy.

10. metallic dust filter as described in claim 1, which is characterized in that bottom end cover, upper end cover and the sealing cover Material be stainless steel.