Filtering device for industrial dust remover

Abstract

The utility model discloses a filtering device for an industrial dust remover, which comprises a filtering box, a plurality of filtering cylinders which are vertically arranged on the filtering box and are connected with the top of the filtering box, an air inlet which is arranged at the bottom of the filtering box and is used for air with dust to enter, and an air outlet which is arranged at the top of the filtering box and is used for discharging clean air after the dust is filtered, and the lower space between the adjacent filter cartridges is larger than the upper space. According to the application, the layout of a plurality of filter bags or filter cartridges with the same length, which are originally vertically mounted in the box body of the dust remover, is improved, so that the airflow space for airflow to enter the bottoms of the filter bags or the filter cartridges is increased, the airflow speed is increased in stages from original sudden increase, and the highest airflow speed at the bottoms of the filter cartridges or the filter bags is greatly reduced. The frequent bottom abrasion of the filter cartridge or the filter bag is reduced, and the overall service life of the filter cartridge of the filter bag is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, in particular to a filtering device for an industrial dust collector. Background Art

[0002] The country continuously improves the environmental protection emission requirements in all walks of life. High-dust-emission enterprises such as steel, cement, power plants, and mines are constantly installing and renovating industrial dust collectors, and at the same time, the requirements for meeting the emission standards are gradually becoming stricter. In the prior art, when dirty air with dust passes through a filtering device for filtration, the filtering device generally has a number of columnar filter bags or columnar filter cartridges arranged at equal heights with a predetermined distance therebetween. When the air with dust passes through the filtering device to remove dust, the dust flows upward from the bottom of the filtering device for filtration.

[0003] In the process of implementing the prior art, the inventor found that:

[0004] During the operation of an industrial dust collector, the wear of the filter bag or filter cartridge is the main cause of its failure. And more than 90% of the wear failures occur at the bottom thereof. The main reason for the failure at the bottom is that when the air with dust passes through the existing filtering device, it first enters between the filter cartridges. During this process, the cross-sectional area of the air flow with dust decreases sharply by 35 - 45%. Based on Bernoulli's principle, the air flow velocity of the air with dust will increase sharply to between 50 - 80%. It can be seen that when the air with dust enters between the filter cartridges, the speed at the bottom is the fastest. And because the air with dust has the fastest speed when passing through the bottom of the filter cartridge, it is easy to cause the impact force of the dust particles to accelerate the impact on the bottom of the filter cartridge, so the bottom of the filter cartridge is easily worn.

[0005] Based on the above problems, the present application provides a technical solution for reducing the wear of the bottom of the filter cartridge and extending the service life of the filtering device, so as to solve the problem that the dust flow velocity at the bottom of the filter cartridge in the prior art is the fastest, resulting in the impact force of the dust particles accelerating the impact on the bottom of the filter cartridge, and causing the bottom of the filter cartridge to be easily worn. Summary of the Utility Model

[0006] The purpose of this part is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of the present application, to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the present utility model.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: A filtering device for an industrial dust collector, comprising a filtering box, a plurality of filter cartridges vertically installed in the filtering box and connected to the top of the filtering box, an air inlet installed at the bottom of the filtering box for the entry of air with dust, and an exhaust port installed at the top of the filtering box for the discharge of clean gas after filtering the dust.

[0008] The lower part space between adjacent filter cartridges among the plurality of filter cartridges is larger than the upper part space.

[0009] As a preferred embodiment of the filter cartridge device for dust removal according to the present utility model, the plurality of filter cartridges are a plurality of columnar filter cartridges, and the heights between the plurality of columnar filter cartridges are different and randomly arranged.

[0010] As a preferred embodiment of the filter cartridge device for dust removal according to the present utility model, the plurality of filter cartridges are a plurality of columnar filter cartridges, and the heights between the plurality of columnar filter cartridges are arranged in an equal-proportion increasing manner or in a combination of equal-proportion increasing and equal-proportion decreasing.

[0011] As a preferred embodiment of the filter cartridge device for dust removal according to the present utility model, the plurality of filter cartridges are first conical filter cartridges, and the ratio of the cross-sectional area of the first conical filter cartridge at the end close to the top of the filtering box to the cross-sectional area of the first conical filter cartridge at the end close to the bottom of the filtering box is 1.5:1 - 2.5:1.

[0012] As a preferred embodiment of the filter cartridge device for dust removal according to the present utility model, the plurality of filter cartridges are combined filter cartridges, and the combined filter cartridges include a first columnar filter cartridge close to the bottom of the filtering box and a second conical filter cartridge close to the top of the filtering box connected to the first columnar filter cartridge, and the cross-sectional area of the second conical filter cartridge at the end where it is connected to the first columnar filter cartridge is smaller than the cross-sectional area of the second conical filter cartridge at the end where it is connected to the top of the filtering box.

[0013] As a preferred embodiment of the filter cartridge device for dust removal according to the present utility model, a plurality of columnar filter bags are further installed in the filtering box, and the lower part space between adjacent filter cartridges and columnar filter bags among the plurality of filter cartridges and the plurality of columnar filter bags is larger than the upper part space;

[0014] The heights between the plurality of filter cartridges and the plurality of columnar filter bags are different and randomly arranged.

[0015] As a preferred embodiment of the filter cartridge device for dust removal according to the present utility model, the plurality of filter cartridges and the plurality of columnar filter bags are arranged in an equal-proportion increasing manner or in a combination of equal-proportion increasing and equal-proportion decreasing.

[0016] Advantages of the utility model:

[0017] The filtering device for industrial dust collectors provided by the present utility model is based on Bernoulli's principle. By changing the length and shape between the filter cartridges or filter bags in the filter box, the space at the lower part between the filter cartridges in the filter box is made larger than that at the upper part, thereby increasing the air flow space at the lower part between the filter cartridges in the filter box. The change in the length of the filter cartridges or filter bags can be that adjacent filter cartridges or filter bags are arranged in a proportional increasing manner, or a combination of proportional increasing and proportional decreasing, or randomly arranged with different heights. The change in the shape of the filter cartridges or filter bags can be changing the columnar filter cartridges or filter bags into conical filter cartridges or conical filter bags. By improving the layout of a number of filter bags or filter cartridges with the same length originally vertically installed in the dust collector box body, the air flow space for the air to enter the bottom of the filter bags or filter cartridges is increased, and the air flow speed changes from a sudden increase originally to a graded increase, greatly reducing the highest air flow speed at the bottom of the filter bags and filter cartridges. The highest flow speed of the dust at the bottom is also greatly reduced. The flow speed of the dust at the bottom is the highest speed in the whole box body. This can reduce the original frequent bottom wear and extend the service life of the filter cartridges and filter bags. Similarly, it can be imagined that the space at the lower part is larger than that at the upper part, and the filtering area at the upper part is larger than that at the lower part, which can drive more dust to be filtered from the upper half of the filter cartridges, further reducing the frequent bottom wear of the filter bags or filter cartridges and greatly extending the overall service life of the filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0019] Figure 1 The first schematic diagram of a filtering device for industrial dust collectors provided by the present utility model;

[0020] Figure 2 The second schematic diagram of a filtering device for industrial dust collectors provided by the present utility model;

[0021] Figure 3 The third schematic diagram of a filtering device for industrial dust collectors provided by the present utility model;

[0022] Figure 4 The fourth schematic diagram of a filtering device for industrial dust collectors provided by the present utility model;

[0023] Figure 5 The fifth schematic diagram of a filtering device for industrial dust collectors provided by the present utility model;

[0024] Figure 6 The sixth schematic diagram of a filtering device for an industrial dust collector provided by the present utility model;

[0025] Figure 7 The seventh schematic diagram of a filtering device for an industrial dust collector provided by the present utility model;

[0026] Figure 8 The eighth schematic diagram of a filtering device for an industrial dust collector provided by the present utility model;

[0027] Figure 9 The ninth schematic diagram of a filtering device for an industrial dust collector provided by the present utility model;

[0028] The markings of the components in the attached drawings are as follows:

[0029] Filtering device for industrial dust collector - 100; Filter box - 1; Filter cartridge - 2; Columnar filter cartridge - 21; First conical filter cartridge - 22; Combined filter cartridge - 23; First columnar filter cartridge - 231; Second conical filter cartridge - 232; Filter bag - 3; Columnar filter bag - 31. Detailed implementation manners

[0030] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model is made in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Specifically, the filtering device 100 for an industrial dust collector provided in this application is mainly used in high - dust - emission enterprises such as steel, cement, power plants, and mines. Among them, in the filtering device 100 for an industrial dust collector, in addition to including a filter box 1 and a number of filter cartridges 2 installed in the filter box 1, an air inlet (not shown in the figure) and an air outlet (not shown in the figure) of the filter box 1, it also includes other components installed in the filter box 1 for realizing the dust removal of the filter cartridge device. For example, a dust discharge valve connected to the filter box 1, a spraying combination installed in the filter box 1, etc. And this application mainly aims at the problem that the bottoms of a number of filter cartridges 2 or a number of filter bags 3 installed in the filter box 1 are prone to wear, and improves its structure to solve the problems of this application. Since it does not involve the improvement of other parts in the filter box 1, it will not be elaborated one by one.

[0032] A filtering device 100 for an industrial dust collector provided by the present application includes a filtering box 1, a plurality of filter cartridges 2 vertically installed in the filtering box 1 and connected to the top of the filtering box 1, an air inlet installed at the bottom of the filtering box 1 for dust to enter, and an exhaust port installed at the top of the filtering box 1 for discharging clean gas after filtering dust. The lower space between adjacent filter cartridges among the plurality of filter cartridges 2 is larger than the upper space between adjacent filter cartridges.

[0033] Specifically, since the air with dust has the fastest speed when passing through the bottom of the filter cartridge, it is easy to cause the impact force of dust particles to accelerate the impact on the bottom of the filter cartridge, resulting in easy wear of the bottom of the filter cartridge. Furthermore, when the filtering device is far from reaching its service life, the filter cartridges or filter bags 3 at the bottom of the filtering box 1 have been worn and leaked, losing the function of filtering dust, resulting in the scrapping of the entire filtering device, affecting dust removal, and causing the emission of dust to exceed the standard.

[0034] Regarding the above problems, based on Bernoulli's principle (the principle that the flow velocity decreases when the cross-sectional area increases, and the flow velocity increases when the cross-sectional area decreases, and the kinetic energy of different cross-sections remains unchanged), the inventor has improved the height or shape of the filter cartridges or filter bags 3 in the filtering box 1, so that the lower space between adjacent filter cartridges among the plurality of filter cartridges 2 is larger than the upper space between adjacent filter cartridges, so that when the air with dust entering the filtering box 1 enters between the filter cartridges, the air flow space increases. It can be understood that the increase in the air flow space changes the original sharp increase in the air flow velocity to a gradual increase, thereby reducing the maximum velocity at the bottom of the filter cartridge, and thus greatly reducing the impact at the bottom.

[0035] However, on this basis, the inventor further improves the arrangement and combination of the filter cartridges in the filtering box 1, so that the air flow velocity changes from the original sudden increase or the increase after the improvement of the above filter cartridges to a hierarchical increase, thereby greatly reducing the dust impact on the bottom of the filter cartridges 2. Similarly, it can be imagined that the lower space is larger than the upper space, making the filtering area in the upper part larger than that in the lower part, and combining with the hierarchical reduction of the dust flow velocity, it can drive more dust to be filtered from the upper half of the filter cartridge, which can further reduce the frequent bottom wear of the filter bag or filter cartridge and greatly extend the overall life of the filtering box.

[0036] Specifically, referring to Figures 1 to 3 , the plurality of filter cartridges 2 are a plurality of columnar filter cartridges 21, and the plurality of columnar filter cartridges 21 are arranged in an equal-proportion increasing height or a combination of equal-proportion increasing height and equal-proportion decreasing height.

[0037] Specifically, the heights of the columnar filter cartridges 21 in the filter box 1 are different, that is, the lower space between adjacent filter cartridges among several filter cartridges 2 is larger than the upper space between adjacent filter cartridges, so that the air circulation space in the lower part of the filter box 1 is increased, that is, the sharp increase in the air flow velocity compared with the original is changed to a gradual increase, thereby reducing the impact on the bottom of the filter cartridge. It can be understood that the several columnar filter cartridges can be randomly arranged with different heights.

[0038] On this basis, it can also be an equal-proportion increase arrangement for columnar filter cartridges 21 with different heights, such as Figure 1 shown. The first increase in the flow velocity is formed between the longest columnar filter cartridge 21 and the shortest columnar filter cartridge 21 until the last increase in the flow velocity is formed between the shortest columnar filter cartridge 21 and its adjacent columnar filter cartridge 21. When the air flow velocity of the air with dust passes through, the air flow velocity will increase in stages, thereby further reducing the highest flow velocity of the dust and reducing the impact of the dust on the bottom of the columnar filter cartridge 21.

[0039] Figure 2 and Figure 3 show an equal-proportion increase and equal-proportion decrease combined arrangement of the columnar filter cartridges 21. This arrangement method is also to reduce the impact of the dust on the bottom of the filter cartridge, resulting in wear on the bottom of the filter cartridge.

[0040] Referring to Figure 4 the several filter cartridges 2 are first conical filter cartridges 22, and the ratio of the cross-sectional area of the first conical filter cartridge 22 near the top end of the filter box 1 to the cross-sectional area of the first conical filter cartridge 22 near the bottom end of the filter box 1 is 1.5:1 - 2.5:1.

[0041] Specifically, several filter cartridges 2 are set as first conical filter cartridges 22, so that the upper space between the first conical filter cartridges 22 and the first conical filter cartridges 22 is reduced, and the lower space is increased, so that the air circulation space in the lower part of the filter box 1 is increased, that is, the sharp increase in the air flow velocity compared with the original will be relatively reduced, thereby reducing the impact on the bottom of the first conical filter cartridge 22.

[0042] On this basis, the first conical filter cartridge can also be Figures 1 to 3 in the equal-proportion increase arrangement, equal-proportion increase and equal-proportion decrease combined arrangement or the first conical filter cartridges have different heights and are randomly arranged in

[0043] Referring toFigure 5 Among them, the several filter cartridges 2 are combined filter cartridges 23. The combined filter cartridge 23 includes a first columnar filter cartridge 231 near the bottom of the filter box 1 and a second conical filter cartridge 232 connected to the first columnar filter cartridge 231 and near the top of the filter box 1. The cross-sectional area of the second conical filter cartridge 232 at the end where it is connected to the first columnar filter cartridge 231 is smaller than the cross-sectional area of the second conical filter cartridge 232 at the end where it is connected to the top of the filter box 1.

[0044] Specifically, it is set that the several filter cartridges 2 are combined filter cartridges 23. The combined filter cartridges 23 can also reduce the space in the upper part and increase the space in the lower part between the combined filter cartridges 23 and the combined filter cartridges 23, so that the dirty air flow space in the lower part of the filter box 1 is increased, that is, the sharp increase in the air flow speed compared with the original is changed to a gradual increase, thereby reducing the impact on the bottom of the filter cartridge.

[0045] On this basis, the combined filter cartridge 23 can also be Figures 1 to 3 arranged in an equal-proportion increasing arrangement or a combination arrangement of equal-proportion increasing and equal-proportion decreasing as in

[0046] It should be noted that the above improvement of the filter cartridge 2 can also be used for the improvement of the filter bag 3, thereby reducing the wear caused by the impact of the air with dust on the bottom of the filter bag 3.

[0047] Refer to Figures 6 to 9 In the filter box 1, several columnar filter bags 31 are also installed. The space in the lower part between the adjacent filter cartridges 2 and columnar filter bags 31 is larger than the space in the upper part; the several filter cartridges 2 and the several columnar filter bags 31 are arranged in an equal-proportion increasing arrangement or a combination of equal-proportion increasing and equal-proportion decreasing. Of course, the several filter cartridges 2 and the several columnar filter bags 31 can also be randomly arranged with different heights.

[0048] Specifically, the space in the lower part between the adjacent filter cartridges 2 and columnar filter bags 31 is larger than the space in the upper part, which can be specifically manifested as: such as Figures 6 to 8 the combination between the columnar filter cartridge 21 and the columnar filter bag 31; such as Figure 9, the combination of the first conical filter cartridge 22 and the columnar filter bag 31. Of course, it can also be the combination between the combined filter cartridge 23 and the columnar filter bag 31. That is to say, it can be understood that in this application, the filter cartridge and the filter bag can also be applied simultaneously, as long as the combination between the filter cartridge and the filter bag satisfies that the lower part space is larger than the upper part space, the sharp increase in the air flow velocity compared with the original can be changed into a gradual increase, thereby reducing the impact on the bottom of the filter cartridge.

[0049] On this basis, the several filter cartridges 2 and the several columnar filter bags 31 are arranged in equal proportion for height increase, or arranged in a combination of equal proportion for height increase and equal proportion for height decrease, or randomly arranged with different heights. When the air flow velocity of the air with dust passes through, the air flow velocity will increase in stages, thereby reducing the maximum flow velocity of the dust and reducing the impact of the dust on the bottom of the filter cartridge.

[0050] It can be seen that in this application, it can be only the improvement made to the filter cartridge group composed of filter cartridges, or it can also be the improvement applied to the filter bag group composed of filter bags. Of course, it can also be the improvement of the filter cartridge and filter bag group combined by the filter cartridge and the filter bag.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A filtering device for an industrial dust collector, comprising a filter box, a plurality of filter cartridges vertically mounted on the filter box and connected to the top of the filter box, an air inlet mounted on the bottom of the filter box for the entry of air with dust, and an exhaust port mounted on the top of the filter box for the discharge of clean air after filtering dust, characterized in that: The lower space between adjacent filter cartridges in the plurality of filter cartridges is larger than the upper space.

2. The filtering device according to claim 1, characterized in that The plurality of filter cartridges are a plurality of columnar filter cartridges, and the plurality of columnar filter cartridges have different heights and are randomly arranged.

3. The filtering device according to claim 1, characterized in that The plurality of filter cartridges are a plurality of columnar filter cartridges, and the heights of the plurality of columnar filter cartridges are arranged in an equal-proportionally increasing manner or in a combination of an equal-proportionally increasing manner and an equal-proportionally decreasing manner.

4. The filtering device according to claim 1, characterized in that: The plurality of filter cartridges are first conical filter cartridges, and the ratio of the cross-sectional area of ​​the first conical filter cartridge close to the top of the filter box to the cross-sectional area of ​​the first conical filter cartridge close to the bottom of the filter box is 1.5:1-2.5:

1.

5. The filtering device according to claim 1, characterized in that: The plurality of filter cartridges are combined filter cartridges, which include a first columnar filter cartridge near the bottom of the filter box, and a second conical filter cartridge connected to the first columnar filter cartridge and near the top of the filter box, wherein the cross-sectional area of ​​the second conical filter cartridge at the end where the second conical filter cartridge is connected to the first columnar filter cartridge is smaller than the cross-sectional area of ​​the end where the second conical filter cartridge is connected to the top of the filter box.

6. The filtering device according to any one of claims 2, 3, 4 and 5, characterized in that: A plurality of columnar filter bags are also installed in the filter box, and the lower space between the adjacent filter cartridges and the columnar filter bags is larger than the upper space; The plurality of filter cartridges and the plurality of columnar filter bags have different heights and are randomly arranged.

7. The filtering device according to claim 6, characterized in that The plurality of filter cartridges and the plurality of columnar filter bags may be arranged in an equal proportion with increasing height or in a combination of equal proportion with increasing height and decreasing height.

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