CN211963412U - Bag type dust collector - Google Patents

Abstract

The utility model relates to the technical field of dust removal equipment, in particular to a bag type dust collector. It includes an inlet, a dust removal chamber, an air source, a dust removal device, an air outlet, and an outlet. The inlet is communicated with the dedusting chamber, and the outlet is communicated with the air outlet. The dedusting device includes a bag cage, a filter bag and a dust scraping device; the bag cage is covered outside There is a layer of filter bag, and the filter bag filters the dust-containing gas entering the air outlet from the dust chamber; the dust scraping device includes a wind driving device and a dust scraping part, and the dust scraping part is arranged outside the dust accumulation of the filter bag. On the surface of the filter bag, the dust scraping component is arranged on the wind driving device, and the wind driving device is driven to rotate by the wind source, and then the dust scraping component is driven to rotate and scrape the dust on the surface of the filter bag. The dust scraping component arranged on the outer surface of the filter bag rotates and scrapes the dust on the outer surface of the filter bag, and directly contacts the outer surface of the filter bag, which can effectively clean the dust on the outer surface of the filter bag and achieve an efficient dust removal effect. .

Description

A bag filter

technical field

The utility model relates to the technical field of dust removal equipment, in particular to a bag type dust collector.

Background technique

In metallurgy, mining, chemical industry, cement and other industries, the dust-laden gas will be generated. The dust-containing gas will pollute the atmosphere greatly, so it is very necessary to remove the dust-containing gas. In these industries, the bag filter is a commonly used dust removal equipment. The working principle of the bag filter is to introduce the dust-containing gas into the filter and make it pass through the filter bag set in the filter, and the dust particles are intercepted and retained. On the surface of the filter bag, a dust layer is formed, and the filtered clean air passes through the filter bag and then exits the dust collector. After the bag filter runs for a period of time, the dust layer accumulated on the dust-facing surface of the bag filter bag becomes thicker and thicker, which increases the resistance loss of the filter and will seriously affect the dust removal efficiency of the filter. Therefore, the bag filter needs to be cleaned regularly after a period of operation.

Common cleaning methods include pulse jet cleaning and manual cleaning. The pulse jet cleaning method is to blow high-pressure air into the filter bag at a high speed for a short period of time to generate backflushing gas in the opposite direction to the filter gas, so that pulse expansion and vibration are generated in the filter bag, thereby shaking off the dust. However, the frequent use of pulse backflushing and high wind speed make the fiber gap of the filter bag frequently stressed, thereby increasing the damage and replacement speed of the filter bag, and the dust removal effect is not ideal, and the operating environment is seriously polluted. The manual cleaning method is not only expensive, but also has a certain impact on the health of the cleaning staff. Therefore, it is necessary to design a bag filter with high efficiency to solve the above problems.

Utility model content

The problem to be solved by the utility model is to provide a bag-type dust collector in view of the above-mentioned deficiencies in the prior art, so as to solve the technical problem that the existing bag-type dust collector cannot efficiently clean the dust in the dust-cleaning process.

To achieve the above object, the utility model adopts the following technical scheme:

A bag filter includes an inlet, a dust chamber, an air source, a dust removal device, an air outlet and an outlet. The inlet is communicated with the dedusting chamber, and the outlet is communicated with the air outlet. The dedusting device includes a bag cage, a filter bag and an ash scraping device. ; The outside of the bag cage is covered with a layer of filter bags, and the filter bags filter the dust-laden gas entering the air outlet chamber from the dust removal chamber;

The dust scraping device includes a wind driving device and a dust scraping component, the dust scraping component is arranged on the outer surface of the filter bag where the dust is accumulated, the dust scraping component is arranged on the wind driving device, and the wind driving device is driven by the wind source. Rotate, and then drive the dust scraping component to rotate and scrape the dust on the surface of the filter bag.

By adopting the above technical scheme, the dust-laden air enters the dust-removing chamber from the inlet, and the dust-removing device filters the dust-laden air in the dust-removing chamber, and the filtered air enters the air outlet chamber and is discharged through the outlet. The dust removal device includes a bag cage and a filter bag. The bag cage supports the flexible filter bag, that is, the outside of the bag cage is covered with a layer of filter bags, and the filter bags filter the dust-laden air. After the dust removal device runs for a period of time, dust will accumulate on the outer surface of the filter bag, and then the filter bag will be cleaned by the dust scraping device. The dust scraping device includes a wind driving device and a dust scraping part. , the wind source drives the wind drive device to rotate, and then drives the dust scraper to rotate. Since the dust scraper is arranged on the outer surface of the filter bag, when the wind drive device drives the dust scraper to rotate, the dust scraper can rub the outer surface of the filter bag. The accumulated dust is scraped, and the dust will fall off, thereby achieving the effect of cleaning the dust removal device.

To sum up, the beneficial technical effect of the present utility model is that: the dust scraping member arranged on the outer surface of the filter bag rotates and scrapes the dust on the outer surface of the filter bag, and directly contacts the outer surface of the filter bag, which can effectively prevent and remove dust from the filter bag. The outer surface of the filter bag is cleaned to achieve efficient cleaning effect.

Description of drawings

FIG. 1 is a schematic diagram of the structure of the bag filter of the present invention.

Figure 2 is a schematic structural diagram of the dust removal device of the present invention.

FIG. 3 is a schematic diagram of the structure of the bag cage of the present invention.

FIG. 4 is a schematic structural diagram of the filter bag of the present invention.

FIG. 5 is a schematic structural diagram of the ash scraper of the present invention.

FIG. 6 is a schematic structural diagram of the wind driving device of the present invention.

7 is a schematic structural diagram of the ventilation channel of the present invention.

In the figure, inlet 100, dust hopper 200, dust chamber 300, partition 310, dust removal device 400, bag cage 410, filter bag 420, wind drive device 430, fan blade 431, bearing 432, inner ring 4321, outer ring 4322 , scraper 440 , air outlet 500 , outlet 600 , ventilation channel 700 , air outlet 710 , and air compressor 800 .

Detailed ways

In order to make the technical means, creative features, achievement goals and functions realized by the present utility model clearer and easier to understand, the present utility model is further elaborated below in conjunction with the accompanying drawings and specific embodiments:

Referring to FIG. 1 , the dust-laden gas enters the dust chamber 300 through the inlet 100 , the dust-laden gas is filtered by the dedusting device 400 , and the filtered clean air enters the outlet chamber 500 and is discharged through the outlet 600 . The bottom end is also provided with a dust collecting bucket 200 to collect the dust in the dust removal chamber 300 and the dust dropped when the dust removal device 400 is cleaned.

2, the bag cage 410 supports the filter bag 420, and the dust-laden air is filtered by the filter bag 420. After the dust collector runs for a period of time, the outer surface of the filter bag 420 accumulates dust, which needs to pass through the dust scraping device. The dust accumulated in the filter bag 420 is cleaned, and the dust scraping device includes a wind driving device 430 and a dust scraping component. The dust scraping component is arranged on the outer surface of the filter bag 420 where the dust is accumulated, and is connected with the wind driving device 430. Drive the wind driving device 430, and then drive the dust scraping member on the wind driving device 430 to rotate. When the dust scraping member arranged on the outer surface of the filter bag 420 rotates, the dust scraping member will be on the filter bag 420 supported by the bag cage 410. The surface generates a scraping force to scrape off the dust on the outer surface of the filter bag 420 , thereby cleaning the accumulated dust on the filter bag 420 . The dust on the filter bag 420 is physically cleaned by using the wind to drive the dust scraper to rotate, and the direct contact between the dust scraper and the surface of the filter bag 420 can greatly improve the cleaning ability of the dust on the filter bag 420 surface.

3 to 5 together, the bag cage 410 is a rigid cage-like structure that supports the filter bag 420, that is, the outer surface of the bag cage 410 is covered with a layer of filter bags 420, as shown in FIG. 1, the dust chamber 300 and The air outlet chamber 500 is separated by the partition plate 310, the partition plate 310 is provided with an opening, and the filter bag 420 supported by the bag cage 410 extends into the dust chamber 300 and is fixed on the partition plate 310 to filter the dust chamber 300. . The wind-driven device 430 is connected to the wind-driven device 430 at the edge of the above-mentioned opening facing the dust chamber 300 . The ash scraper 440, when the ash scraper 440 rotates under the action of the wind driving device 430, can ensure that the outer surface of the filter bag 420 is cleaned in all directions. Separating the bag cage 410 from the filter bag 420 makes it more convenient to replace the filter bag 420 without adjusting or moving the ash scraping device.

6 together, the specific structure of the wind driving device 430 includes a bearing 432 and a fan blade 431, the inner ring 4321 of the bearing 432 is fixedly connected to the opening edge of the above-mentioned partition 310, and the outer ring 4322 is fixedly connected with the fan blade 431, and The inner ring 4321 protrudes from the end face of the outer ring 4322 by one end of the partition plate, that is, in terms of the height of the end faces of the inner ring 4321 and the outer ring 4322, the height of the inner ring 4321 is higher than that of the outer ring 4322. 4321 does not move, and the fan blade 431 is driven by the wind source to drive the outer ring 4322 of the bearing 432 to rotate. Since the inner ring 4321 of the bearing 432 is higher, it can also avoid the contact between the outer ring 4322 and the partition 310 and affect the rotation of the outer ring 4322. It is understandable It is also possible to set a sleeve at the opening edge of the above-mentioned partition plate 310 , and sleeve the inner ring 4321 of the bearing 432 on the sleeve to realize the installation of the wind driving device 430 . The rotating outer ring 4322 is fixedly connected to the dust scraping member, thereby driving the rotation of the dust scraping member. The specific dust scraping member is disposed at the end of the outer ring 4322 facing away from the partition 310 . The wind drive device is formed by connecting the fan blades on the outer surface of the outer ring 4322 of the known bearing 432 structure, which is easy to implement in the production process, can save design and manufacturing costs during production, and can also achieve a good wind drive effect. At the same time, by using wind power, it is easier to realize that one power source can drive multiple parts to be driven (dust scrapers) at the same time; in addition, the structure is more compact, which is not suitable for dust collectors with a tank structure that cannot install complex transmission parts. It is especially important that the compressed air can be conveyed by pipes such as hoses, which is conducive to flexible laying and can well adapt to the internal volume of the dust collector.

Referring to FIG. 7 together, at least four dust removal devices 400 are arranged in two rows in a staggered manner, and a ventilation channel 700 communicated with the air source is provided between the two rows of dust removal devices 400, so that the two rows of dust removal devices 400 are ventilated. The ventilation passages 700 are separated, and air outlets 710 corresponding to the same number and position as the dust removal devices 400 are provided on the corresponding sides of the dust removal device 400 on the ventilation passage 700 . As shown in FIG. 7 , a curved “S”-shaped ventilation channel 700 is provided in the middle of the two dust removal devices 400 , and air outlets 710 corresponding to the dust removal device 400 are provided on both sides of the ventilation channel 700 . The ventilation channel 700 is connected to the air The compressors 800 are connected, and the air compressor 800 supplies air to the ventilation passage 700 , and then outputs air to the corresponding dust removal device 400 through the air outlet 710 to drive the wind driving device 430 on the dust removal device 400 . Through the ventilation channel 700 with the air outlet 710, one air source can provide driving force to the wind devices on multiple dust removal devices 400 at the same time, and there is no need to set up multiple air sources, which saves cost, has a simple structure, and is easy to manufacture and maintain. At the same time, the staggered arrangement of the dust removal devices 400 can also reduce the influence of the airflow generated when rotating with each other.

It can be understood that the above structure of the scraper 440 can use other structures, such as "J" shape, according to actual needs under the condition of ensuring that the outer surface of the filter bag 420 can be cleaned in all directions during rotation.

Further, the above-mentioned scraper 440 is preferably made of thin and light materials under the condition of ensuring rigidity.

Further, the surface of the scraper plate 440 in contact with the filter bag 420 can be made of a relatively flexible material, such as rubber, to prevent the filter bag 420 from being scratched.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not 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 The technical solutions are modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a bag collector, includes entry (100), clean room (300), wind regime, dust collector (400), goes out air chamber (500) and export (600), and entry (100) and clean room (300) intercommunication, export (600) and go out air chamber (500) intercommunication, its characterized in that: the dust removal device (400) comprises a bag cage (410), a filter bag (420) and an ash scraping device; a layer of filter bag (420) covers the bag cage (410), and the filter bag (420) filters the dust-containing gas entering the gas outlet chamber (500) from the dust removing chamber (300);

scrape grey device and include wind-force drive arrangement (430) and scrape grey part, should scrape grey part and locate filter bag (420) accumulate the surface that has the dust, scrape on grey part locates wind-force drive arrangement (430), through wind source drives wind-force drive arrangement (430) and rotates, and then the drive is scraped grey part and is being rotatory, is scraped the ash on the surface of filter bag (420) deposition.

2. A bag house as defined in claim 1, wherein: the dust removal chamber (300) and the air outlet chamber (500) are separated by a partition plate (310), the bag cage (410) and the filter bag (420) extend into the dust removal chamber (300) through an opening in the partition plate (310), and the wind power driving device (430) is arranged at the edge of one end of the opening facing the dust removal chamber (300);

the wind power driving device (430) comprises a bearing (432) and fan blades (431), the fan blades (431) are fixedly connected with the outer surface of an outer ring (4322) of the bearing (432), the outer ring (4322) faces away from one end of the partition plate (310) and is fixedly connected with the ash scraping component, and the end face of an inner ring (4321) of the bearing (432) extends out of the end face of the outer ring (4322) and is fixedly arranged at the opening edge of the partition plate (310).

3. A bag house as defined in claim 2, wherein: the number of the dust removing devices (400) is at least four, and the dust removing devices are arranged in two rows in a staggered mode.

4. A bag house as defined in claim 3, wherein: the dust removal device is characterized by further comprising a ventilation channel (700) communicated with the air source, the ventilation channel (700) is arranged between the dust removal devices (400) which are arranged in two rows in a staggered mode to separate the two rows of dust removal devices (400), and air outlets (710) which are consistent in number and correspond in position to the dust removal devices (400) are arranged on the corresponding side faces, facing the dust removal devices (400), of the ventilation channel (700).

5. A bag house as defined in claim 4, wherein: the air source is an air compressor (800), and the air outlet (710) faces to the tangential direction of the rotating circumference of the fan blade (431).

6. A bag house as defined in claim 2, wherein: the ash scraping component is an ash scraping plate (440), the ash scraping plate (440) is provided with a groove matched with a filter bag (420) supported by the bag cage (410), the groove is approximately U-shaped, and the notch end of the groove is fixedly connected to one end, back to the partition plate, of the outer ring (4322).

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