Chemical safety production dust removal device

Abstract

The invention discloses a chemical safety production dust removal device which comprises a connecting pipeline, a filtering pipeline, a dust discharging pipeline and a cloth bag piece, the cloth bag piece comprises an upper disc, a lower disc, a cloth bag sleeve and a spring arranged in the cloth bag sleeve and connected with the lower disc, the device is provided with a cleaning pipeline, the spring is driven to swing to assist in dust falling when high-pressure gas is blown in, and a driving device is arranged at the bottom of the dust discharging pipeline. A motor drives a cam to rotate, a cam guide groove and a connecting rod mechanism are used for driving a transverse pressing block to ascend, a spring is compressed through a jacking lower disc, the cam continues to rotate to enable the transverse pressing block to transversely move to give way, the spring is released downwards at the moment when pressure is relieved, and jacking impact and aftershock are generated to shake off dust. According to the invention, the instantaneous release oscillation of the spring is combined with airflow blowing, so that the problems of dust floating pollution and secondary attachment caused by traditional pure airflow back blowing are effectively avoided, the dust cleaning is more thorough, the dust cleaning force can be flexibly adjusted by adjusting the size of the cam, and the practicability is high.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology, and in particular to a dust removal device for safe chemical production. Background Technology

[0002] Currently, large amounts of dusty waste gas are often generated in many fields such as industrial production, ore processing, and chemical smelting. In order to protect the ecological environment and the health of workers, these dusty gases must be filtered and purified. Among them, bag filters are widely used because of their high dust removal efficiency and strong adaptability.

[0003] The working principle of a bag filter is that when dust-laden gas passes through the filter bag, the dust is intercepted on the outer surface of the filter bag, and the purified gas is discharged from the inside of the filter bag. As the working time increases, more and more dust will be adsorbed on the outer surface of the filter bag, which will increase the operating resistance of the dust collector and reduce the filtration efficiency. Therefore, it is necessary to clean the filter bag regularly.

[0004] Currently, most existing baghouse dust collectors on the market use pulse jet cleaning technology, which relies solely on the impact of a burst of high-pressure gas on the filter bags to cause them to expand and deform, thus shaking off the dust. However, this traditional single-airflow cleaning method has the following obvious drawbacks in practical use: Limited dust removal capacity, which can easily cause blockage: Traditional filter bags are mostly supported by rigid metal frame cages. The filter bags themselves lack the ability to actively vibrate and remove dust. For tightly adsorbed or sticky dust, it is difficult to completely remove it by the impact of high-pressure airflow alone. Over time, this can easily cause blockage of the filter bag micropores, increase the system's exhaust negative pressure resistance, and shorten the service life of the filter bags. The existing dust removal structure is relatively simple and cannot provide high-frequency, instantaneous mechanical vibration to assist in dust removal while the airflow is blowing. This results in a high maintenance frequency and limited work efficiency for the overall dust collector.

[0005] Therefore, how to design a dust removal device that can effectively avoid completely shaking off the dust on the outside of the filter bag through a combination of physical vibration and airflow has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] Therefore, in view of the above problems, the present invention proposes a dust removal device for safe chemical production, which solves the above technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a dust removal device for chemical safety production, comprising a connecting pipe, an air inlet pipe connected to the connecting pipe, a filter pipe detachably disposed on the top surface of the connecting pipe, a dust discharge pipe disposed on the bottom surface of the connecting pipe, a partition disposed on the top surface of the filter pipe, a plurality of filter bags detachably disposed on the top surface of the partition, an air outlet channel disposed in the filter pipe and spaced apart from the filter bags, an air outlet pipe connected to the bottom of the air outlet channel, a sealing cover detachably disposed on the top surface of the connecting pipe, and a cleaning pipe for cleaning the filter bags. The filter bags include an upper plate detachably disposed on the partition, a lower plate spaced below the upper plate, a filter bag sleeve disposed between the upper plate and the lower plate, and a spring disposed inside the filter bag sleeve. The bottom surface of the spring is connected to the lower plate, and the partition has a diaphragm hole with an inner diameter smaller than the diameter of the spring.

[0008] Furthermore, the cleaning pipeline includes multiple air blowing pipes disposed inside the filter pipeline and located above the partition plate. The air blowing pipes are located above the filter bag. An air inlet valve connected to each air blowing pipe is provided on the outside of the filter pipeline. An air distribution pipe is connected to the bottom surface of each air inlet valve.

[0009] Furthermore, the spacing between each of the air outlet pipes is the same, and the air outlet pipes form a horizontal row in front and behind. A horizontal pressure block is attached to the bottom surface of each horizontal row, and a fixing plate is provided on the front and rear sides of the horizontal pressure block. A driving device for driving the fixing plate to move is provided at the bottom of the dust discharge pipe.

[0010] Furthermore, the driving device includes a support frame disposed inside the dust exhaust pipe, a cam rotatably disposed in the middle of the support frame, a motor for driving the cam to rotate, a guide post slidably disposed on one side of the support frame, a guide block disposed on the side of the guide post away from the support frame, a driving block slidably disposed in the guide block, a guide groove disposed inside the cam, a first guide wheel disposed on one side of the guide block and slidably connected to the guide groove, and a first connecting rod rotatably disposed on the support frame. A second connecting rod is rotatably connected to the outside of the driving block, and the other side of the first connecting rod is rotatably connected to the second connecting rod.

[0011] By adopting the aforementioned technical solution, the beneficial effects of the present invention are: This chemical safety dust removal device overcomes the limitations of traditional baghouse dust collectors that rely solely on airflow backflushing. It incorporates springs inside the filter bags and a cam-driven mechanism at the bottom. A motor drives the cam to rotate, causing a drive block to move upwards and compress the spring via a lower plate. The drive block then moves laterally, instantly releasing the compressed spring downwards. The resulting upward impact force from the lower plate powerfully peels away tightly adhered or sticky dust from the outside of the filter bags. Furthermore, the spring, due to inertia, generates multiple high-frequency, weak compression and release vibrations after release, achieving deep and thorough cleaning of the filter bags, significantly improving dust removal efficiency and the air permeability of the bags. To address the shortcomings of existing technologies that rely solely on high-pressure gas impact, which leads to significant dust stirring and contamination of the clean air chamber, and the tendency for dust to re-adhere to the filter bags after airflow ceases, this invention utilizes a mechanical spring to instantly release the impact downwards. This gives the shaken dust an initial downward velocity, allowing it to fall quickly and decisively into the bottom dust extraction pipe for unified collection. This significantly reduces the dust's suspension time within the filter pipe, effectively preventing dust from rising and contaminating the space above the partition and avoiding secondary adsorption. Furthermore, this invention incorporates dedicated cleaning and blowing pipes. During high-pressure gas backflushing, the high-pressure gas blown into the filter bags causes the flexible springs inside the bag sleeves to oscillate and shake irregularly. This synergistic effect of airflow impact and spring oscillation further disrupts the dust's adhesion structure on the outside of the filter bags, facilitating rapid dust detachment and making the cleaning process more efficient. The drive unit at the bottom adopts a matching structure of guide wheel and cam guide groove. In actual production and use, according to different dust characteristics such as specific gravity, viscosity or bag length, the horizontal movement distance and upward compression distance of the horizontal pressure block can be changed by simply changing or adjusting the size of the cam and the included angle of the guide groove, thereby adjusting the impact force and frequency of dust removal, which greatly expands the industrial application range of the dust removal device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural diagram of the filter pipe of the present invention; Figure 3 This is a schematic diagram of the internal structure of the filter pipe of the present invention; Figure 4 This is a partial structural diagram of the driving device of the present invention; Figure 5 This is a top view schematic diagram of the drive device structure of the present invention. Detailed Implementation

[0013] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0014] refer to Figures 1 to 5 This embodiment provides a dust removal device for chemical safety production, including a connecting pipe 1, an air inlet pipe 2 connected to the connecting pipe 1, a filter pipe 3 detachably disposed on the top surface of the connecting pipe 1, a dust discharge pipe 4 disposed on the bottom surface of the connecting pipe 1, a partition 5 disposed on the top surface of the filter pipe 3, a plurality of filter bags 6 detachably disposed on the top surface of the partition 5, an air outlet channel 301 disposed in the filter pipe 3 and spaced apart from the filter bags 6, an air outlet pipe 7 connected to the bottom of the air outlet channel 301, a sealing cover 8 detachably disposed on the top surface of the connecting pipe 1, and a cleaning pipe for cleaning the filter bags 6. The bag component 6 includes an upper plate 601 detachably mounted on a partition 5, a lower plate 602 spaced below the upper plate 601, a bag cover 603 located between the upper plate 601 and the lower plate 602, and a spring 604 located inside the bag cover 603. The bottom surface of the spring 604 is connected to the lower plate 602. The partition 5 has a slit hole 501 with an inner diameter smaller than that of the spring 604.

[0015] In use, external air enters the connecting pipe 1 through the air inlet pipe 2. Since the air outlet pipe 7 is connected to the external purification pipe, the dusty air is affected by the negative pressure of the air outlet pipe 7 and is filtered and purified by the bag component 6. Then, it is discharged from the air outlet pipe 7 through the air outlet channel 301, thus completing the filtration and purification of the dusty air. Since the bag component 6 is composed of a bag cover 603 that wraps the upper plate 601, spring 604 and lower plate 602, after the high-pressure gas air inside the cleaning pipe is blown into the bag component 6, the spring 604 inside the bag cover 603 will swing and shake. The swinging of the spring 604 will help shake off the dust on the outside of the bag cover 603, thus improving the dust removal effect.

[0016] The cleaning pipeline includes multiple air blowing pipes 9 located inside the filter pipeline 3 and above the partition plate 5. The air blowing pipes 9 are located above the cloth bag 6. An air inlet valve 10 connected to each air blowing pipe 9 is provided on the outside of the filter pipeline 3. An air distribution pipe 11 is connected to the bottom surface of each air inlet valve 10.

[0017] The cleaning pipeline is designed so that high-pressure gas is connected to each air inlet valve 10 and air blowing pipe 9 through the air distribution pipe 11. When the bag cover 603 needs to be cleaned, the high-pressure gas in the air inlet valve 10 passage is sprayed out from the air blowing pipe 9 and blown to the outside of the filter pipeline 3. This can shake off the dust adsorbed on the outside of the bag cover 603 from below. In addition, because the bag cover 603 is equipped with a spring 604, the bag cover 603 shakes, which will help shake off the dust on the outside of the bag cover 603.

[0018] The spacing between each of the air outlet pipes 7 is the same, and the air outlet pipes 7 form a horizontal row in front and behind. A horizontal pressure block 12 is attached to the bottom surface of each horizontal row. A fixing plate 13 is provided on the front and rear sides of the horizontal pressure block 12. A driving device for driving the fixing plate 13 to move is provided at the bottom of the dust discharge pipe 4.

[0019] The driving device includes a support frame 201 located inside the dust exhaust pipe 4, a cam 202 rotatably located in the middle of the support frame 201, a motor 203 for driving the cam 202 to rotate, a guide post 204 slidably located on one side of the support frame 201, a guide block 205 located on the side of the guide post 204 away from the support frame 201, a driving block 206 slidably located in the guide block 205, a guide groove 207 located inside the cam 202, a first guide wheel 208 located on one side of the guide block 205 and slidably connected to the guide groove 207, and a first connecting rod 209 rotatably located on the support frame 201. The cam 202 has an included angle 210 of 130 to 140 degrees on its left side. One side of the first connecting rod 209 is slidably connected to the guide groove 207 on the left side of the cam 202. A second connecting rod 211 is rotatably connected to the outside of the driving block 206. The other side of the first connecting rod 209 is rotatably connected to the second connecting rod 211.

[0020] Motor 203 drives cam 202 to rotate. At this time, the first guide wheel 208 contacts the right side of guide groove 207, and the guide block 205 remains stationary. The second guide wheel contacts the left side of guide groove 207. As the left guide groove 207 is guided by the included angle 210, it will drive the first connecting rod 209 to move to the left. The first connecting rod 209, through the second connecting rod 211, will drive the drive block 206 to move horizontally upward. The drive block 206 will drive the fixed plate 13 and the horizontal pressure block 12 to rise, and will then lift the bag cover 603 through the lower plate 602. The spring 604 inside is compressed, and then the cam 202 continues to rotate. At the initial position of the angle 210 between the first guide wheel 208 and the guide groove 207, the guide block 205 will drive the fixed plate 13 to move to the left. The horizontal pressure block 12 on the fixed plate 13 will leave the lower plate 602, and the compression of the spring 604 between the upper plate 601 and the lower plate 602 will be released. The lower plate 602 will instantly generate a top-pressure impact, shaking off the dust from the outside of the bag cover 603. At the same time, the spring 604 inside the bag cover 603 will be affected by inertia and will... Several weak compression and release vibrations are generated to shake off the dust on the outside of the bag cover 603. The fallen dust is collected and discharged through the bottom dust discharge pipe 4. Compared with the existing method of only using gas to impact the bag part 6, which generates a large amount of dust, the dust will float up and pollute the space above the partition 5. Alternatively, air can be blown inside, and after it falls, the dust will re-attach to the outside of the dust collector bag. After the dust removal is completed and the spring 604 is stable, as the cam 202 continues to rotate, the first guide wheel 208 contacts the other half of the guide groove 207 at an angle 210, which will drive the guide block 205 to move to the right to its original position. Then the second guide wheel contacts the guide groove 207 at an angle 210 again, which will cause the drive block 206 to move back to its initial position. The spring 604 will contact the top surface of the drive block 206 again. The displacement path can be seen by referring to the position of the dotted line above the horizontal pressure block 12 and the fixed plate 13 in the figure. In actual use, the horizontal and upward movement distances of the horizontal pressure block 12 and the fixed plate 13 can be changed by adjusting the size of the cam 202, and are not limited to the only distance shown in the figure.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A dust removal device for safe chemical production, characterized in that, It includes a connecting pipe (1), an air inlet pipe (2) connected to the connecting pipe (1), a filter pipe (3) detachably disposed on the top surface of the connecting pipe (1), a dust discharge pipe (4) disposed on the bottom surface of the connecting pipe (1), a partition (5) disposed on the top surface of the filter pipe (3), multiple cloth bag components (6) detachably disposed on the top surface of the partition (5), an air outlet channel (301) disposed in the filter pipe (3) and spaced apart from the cloth bag components (6), an air outlet pipe (7) connected to the bottom of the air outlet channel (301), a sealing cover (8) detachably disposed on the top surface of the connecting pipe (1), and a cleaning pipe for cleaning the dust from the cloth bag components (6); The bag component (6) includes an upper plate (601) detachably mounted on a partition (5), a lower plate (602) spaced below the upper plate (601), a bag cover (603) located between the upper plate (601) and the lower plate (602), and a spring (604) located inside the bag cover (603). The bottom surface of the spring (604) is connected to the lower plate (602), and the partition (5) has a slit (501) with an inner diameter smaller than that of the spring (604).

2. The dust removal device for chemical safety production according to claim 1, characterized in that: The cleaning pipeline includes multiple air blowing pipes (9) located inside the filter pipeline (3) and above the partition (5). The air blowing pipes (9) are located above the cloth bag (6). An air inlet valve (10) connected to each air blowing pipe (9) is provided on the outside of the filter pipeline (3). An air distribution pipe (11) is connected to the bottom surface of each air inlet valve (10).

3. The dust removal device for chemical safety production according to claim 1, characterized in that: The spacing between each of the air outlet pipes (7) is the same, and the air outlet pipes (7) form a horizontal row in front and behind. A horizontal pressure block (12) is attached to the bottom surface of each horizontal row. A fixing plate (13) is provided on the front and back sides of the horizontal pressure block (12). A driving device for driving the fixing plate (13) to move is provided at the bottom of the dust discharge pipe (4).

4. A dust removal device for chemical safety production according to claim 3, characterized in that: The driving device includes a support frame (201) located inside the dust exhaust pipe (4), a cam (202) rotatably located in the middle of the support frame (201), a motor (203) for driving the cam (202) to rotate, a guide post (204) slidably located on one side of the support frame (201), a guide block (205) located on the side of the guide post (204) away from the support frame (201), a driving block (206) slidably located in the guide block (205), a guide groove (207) located inside the cam (202), a first guide wheel (208) located on one side of the guide block (205) and slidably connected to the guide groove (207), and a first connecting rod (209) rotatably located on the support frame (201). A second connecting rod (211) is rotatably connected to the outside of the driving block (206), and the other side of the first connecting rod (209) is rotatably connected to the second connecting rod (211).

5. A dust removal device for chemical safety production according to claim 4, characterized in that: The cam (202) has an included angle (210) of 130~140 degrees on the left side.

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