Efficient self-cleaning pulse dust collector

Abstract

The invention relates to an efficient self-cleaning type pulse dust collector, and belongs to the field of dust collectors, the efficient self-cleaning type pulse dust collector comprises a box body, a filter bag and a back flushing mechanism, a partition plate is fixedly arranged in the box body, one side of the partition plate is a filter chamber, the other side of the partition plate is an air purification chamber, the partition plate is provided with filter holes, the filter bag is installed on the partition plate and located in the filter chamber, and the back flushing mechanism is arranged on the filter bag. The back flushing mechanism is used for conveying airflow flowing to one side of the filtering chamber from the interior of the filtering bag to the filtering bag, the filtering bag is cylindrical and is coaxial with the filtering hole, the back flushing mechanism comprises an air source, an air conveying pipe, an air homogenizing body and a control assembly, and the air homogenizing body is located on the inner side of the filtering bag and slides relative to the partition plate; gas spraying holes are formed in the side, facing the inner side wall of the filter bag, of the gas homogenizing body, the gas source conveys gas flow into the gas homogenizing body through the gas conveying pipe, and the control assembly is used for controlling movement of the gas homogenizing body. The efficient back-blowing self-cleaning dedusting device has the efficient back-blowing self-cleaning dedusting effect.

Description

Technical Field

[0001] This application relates to the field of dust collectors, and particularly to an efficient self-cleaning pulse dust collector. Background Art

[0002] A pulse dust collector is a dust collector improved on the basis of a bag dust collector that can perform self-cleaning through pulse backblowing. It includes a box body, filter bags, and a backblowing pipe. The interior of the box body is divided into a filtering chamber and a clean gas chamber. The filter bags are located at the passage between the filtering chamber and the clean gas chamber.

[0003] Dusty gas enters the box body. Fine dust enters the filtering chamber with the airflow. After being filtered by the filter bags, a dust layer adheres to the outer wall of the filter bags. The purified gas enters the clean gas chamber and is discharged through the fan outlet. As the filtering time increases, more and more dust accumulates on the filter bags, increasing the resistance of the filter bags. This can gradually reduce the processing air volume, and it is necessary to perform backblowing and ash removal on the filter bags irregularly.

[0004] In related technologies, the backblowing pipe is located in the clean gas chamber and can jet backblowing pulse airflow towards the filter bags, causing the dust layer adhering to the surface of the filter bags to fall off, and the filter bags restore their filtering ability.

[0005] Conventional backblowing pipes and filter bags are coaxial, that is, the nozzle of the backblowing pipe is directly opposite the bottom of the filter bags. Therefore, during self-cleaning, the cleaning effect of the end of the filter bag far from the clean gas chamber is better than or faster than that of the end close to the clean gas chamber, resulting in uneven self-cleaning effect or low cleaning efficiency. Summary of the Invention

[0006] In order to improve the above problems, this application provides an efficient self-cleaning pulse dust collector.

[0007] The efficient self-cleaning pulse dust collector provided by this application adopts the following technical solutions: An efficient self-cleaning pulse dust collector includes a box body, filter bags, and a backblowing mechanism. A partition is fixedly arranged inside the box body. One side of the partition is a filtering chamber, and the other side is a clean gas chamber. Filter holes are formed on the partition. The filter bags are installed on the partition and located in the filtering chamber. The backblowing mechanism is used to convey airflow flowing towards the filtering chamber side from the inside of the filter bags to the filter bags. The filter bags are cylindrical and coaxial with the filter holes. The backblowing mechanism includes a gas source, an air delivery pipe, a gas equalizing body, and a control component. The gas equalizing body is located inside the filter bags and slides relative to the partition. The side of the gas equalizing body facing the inner wall of the filter bags is provided with air jet holes. The gas source conveys airflow into the gas equalizing body through the air delivery pipe. The control component is used to control the movement of the gas equalizing body.

[0008] By adopting the above technical solution, the uniform gas moves inside the filter bag. During the movement, the air injection holes on it sweep across most of the inner wall area of the filter bag, so that the cleaning rate of each part of the filter bag reaches uniformity and is improved.

[0009] Preferably, the moving direction of the uniform gas relative to the partition plate is parallel to the axis of the filter bag. The uniform gas is in an annular tube shape and coaxial with the filter bag. The air delivery pipe is communicated with the inner cavity of the uniform gas. The air injection holes are located on the outer edge side wall of the uniform gas. There are multiple air injection holes and they are arranged in a circumferential array around the uniform gas.

[0010] Preferably, on the side of the partition plate facing the filter chamber and inside the filter bag, there is a support frame. The support frame includes support columns and a support plate. The length direction of the support columns is perpendicular to the partition plate. One end of the support column is connected to the partition plate, and the other end is fixedly connected to the support plate. The support plate abuts against the inner bottom wall of the filter bag, and the edge of the support plate contacts the inner side wall of the filter bag.

[0011] By adopting the above technical solution, with the internal support of the support frame, the filter bag can maintain a certain form stability relative to the partition plate.

[0012] Preferably, there are multiple support columns. The multiple support columns are arranged in an annular array around the axis of the filter hole. A connecting frame is fixedly connected to the inner edge of the uniform gas. The connecting frame includes a central body and multiple rigid connecting rods. The central body is located among all the support columns. One end of the rigid connecting rod is connected to the central body, and the other end is connected to the uniform gas. The rigid connecting rod passes through the gap between two adjacent support columns.

[0013] By adopting the above technical solution, the multiple support columns imprison the central body, and the central body cannot move horizontally. The central body is then connected to the uniform gas through the rigid connecting rods, thereby improving the coaxiality of the uniform gas relative to the central body, that is, improving the coaxiality of the uniform gas relative to the filter bag.

[0014] Preferably, the outer edge of the uniform gas applies a pressing force to the inner wall of the filter bag.

[0015] By adopting the above technical solution, wherever the uniform gas reaches, the filter bag is deformed by the abutting force from the uniform gas. The specific deformation form is that the outside of the filter bag expands, and the dust attached here is more likely to break away from the filter bag.

[0016] Preferably, a plurality of air distribution collar rings are sleeved on the uniform gas. The number of the air distribution collar rings is the same as that of the air injection holes and they correspond to each other one by one. The air injection holes are located inside the air distribution collar rings. A number of air distribution holes are opened on the air distribution collar rings. The air distribution collar rings abut against the inner side wall of the filter bag.

[0017] By adopting the above technical solution, the air uniforming ring is in direct contact with the inner wall of the filter bag, and the air uniforming holes allow air to pass through. At the same time, the air uniforming ring forms a convex structure on the air uniforming gas, which has abutment effect on the inner wall of the filter bag wherever it reaches.

[0018] Preferably, two of the gas equalizing frames and the connecting frame are provided, the two gas equalizing frames are arranged along the axial direction of the filter cartridge, and the gas equalizing rings on the two gas equalizing frames are alternately arranged along the circumference of the filter bag.

[0019] By adopting the above technical solution, when two uniform gas flows sweep the same area, the uniform gas collars on the two uniform gas flows have a more comprehensive overall contact area with the inner wall of the filter bag.

[0020] Preferably, a connecting spring is connected between the central bodies of the two support frames, and the expansion and contraction direction of the connecting spring is parallel to the sliding direction of the gas.

[0021] By adopting the above technical solution, the connecting spring makes the connection distance between the two gas-distributing connecting frames not fixed, and adaptively feedback changes according to the change of the friction force between each and the filter bag, thereby reducing the friction damage of the gas-distributing connecting frames to the filter bag.

[0022] Preferably, the control component includes a control motor, a control gear and a control push-pull rod, the control motor is connected to the box, the control gear is coaxially connected to the output shaft of the control motor, the control push-pull rod is fixedly connected with a control rack, the control rack and the control gear are meshed, a clearance hole is coaxially opened on the center body relatively close to the partition, the control push-pull rod passes through the clearance hole, the end of the control push-pull rod is fixedly connected with a push-pull block, the push-pull block is located between the two center bodies, and the width of the push-pull block is greater than the width of the clearance hole.

[0023] By adopting the above technical solution, the control motor drives the push-pull rod to move through the gear pair, and the push-pull block at the end of the push-pull rod controls one of the connecting frames to move by means of thrust or tension. This connecting frame then controls the movement of another connecting frame through the connecting spring, thereby achieving overall control.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of uniform gas, the uniform gas moves in the filter bag. During the movement, the jet holes on it sweep over most of the inner wall of the filter bag, so the rate of uniform cleaning of all parts of the filter bag is increased; 2. The outer edge of the uniform gas is used to apply abutment force to the inner wall of the filter bag. Wherever the uniform gas reaches, the filter bag is deformed by the abutment force from the uniform gas. The specific deformation form is that the outside of the filter bag expands, and the dust attached here is easier to detach from the filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic cross-sectional view showing the overall structure of the high-efficiency self-cleaning pulse dust collector in the embodiment of the present application.

[0026] Figure 2 It is a schematic diagram showing the structure when the gas is evenly distributed inside the filter bag in the embodiment of the present application.

[0027] Figure 3 It is a schematic diagram showing the structure of the support frame, connection frame and control component in the embodiment of the present application.

[0028] Figure 4 It is Figure 1 The partial enlarged view of part A in

[0029] Explanation of reference numerals: 1, box body; 11, partition board; 12, filtering hole; 13, filtering chamber; 14, clean gas chamber; 2, filter bag; 3, support frame; 31, support column; 32, support plate; 4, back blowing mechanism; 41, gas equalizing member; 411, air injection hole; 412, air equalizing sleeve ring; 4113, air equalizing hole; 42, connection frame; 421, central body; 422, rigid connecting rod; 423, relief hole; 424, connecting spring; 43, air delivery pipe; 44, control component; 441, control motor; 442, control gear; 443, control push-pull rod; 444, control rack; 445, push-pull block. Detailed implementation manners

[0030] The following further elaborates on the present application in conjunction with the attached Figures 1-4 for a more detailed description.

[0031] The embodiment of the present application discloses a high-efficiency self-cleaning pulse dust collector. As shown in Figure 1 and 2 , it includes a box body 1, a filter bag 2 and a back blowing mechanism 4. A partition board 11 is fixedly arranged inside the box body 1. The partition board 11 is horizontally arranged. The lower side of the partition board 11 is a filtering chamber 13, and the upper side is a clean gas chamber 14. A plurality of filtering holes 12 are opened on the partition board 11. The bag mouth end of the filter bag 2 is installed on the side of the partition board 11 facing the filtering chamber 13, that is, the filter bag 2 is located in the filtering chamber 13. The filter bag 2 is cylindrical and coaxial with a single filtering hole 12. The gas to be filtered enters the box body 1 from the filtering chamber 13, successively passes through the filter bag 2 and the filtering holes 12 to enter the clean gas chamber 14, and finally is discharged from the box body 1. During this process, the dust in the gas is intercepted by the filter bag 2 and adsorbed on the filter bag 2. The back blowing mechanism 4 is used to convey a pulsed air flow flowing towards the filtering chamber 13 side from the inside of the filter bag 2 to the filter bag 2. The impact of the air flow causes the dust attached to the filter bag 2 to break away from it, realizing the self-cleaning of the filter bag 2.

[0032] As shown in Figure 1 , 2As shown in FIGS. 2 and 3, a support frame 3 is provided inside the filter bag 2 on the side of the partition plate 11 facing the filtration chamber 13. The support frame 3 is located inside the filter bag 2 and includes support columns 31 and a support plate 32. The length direction of the support columns 31 is perpendicular to the partition plate 11. One end of the support column 31 is fixedly connected to the pore wall of the filtration hole 12 through an iron rod, and the other end is fixedly connected to the support plate 32. The support plate 32 is a circular plate, which abuts against the inner bottom wall of the filter bag 2, and the edge of the support plate 32 contacts the inner side wall of the filter bag 2. With the internal support of the support frame 3, the filter bag 2 can maintain a certain form stability relative to the partition plate 11. There are four support columns 31 inside a single filter bag 2, and the four support columns 31 are arranged in a circular array around the axis of the filtration hole 12.

[0033] As Figure 1 , 2 As shown in FIGS. 2 and 3, the backwashing mechanism 4 includes a gas source, a gas transmission pipe 43, a gas distributor 41 and a control component 44. The gas distributor 41 is located inside the filter bag 2 and slides relative to the partition plate 11, and the moving direction is parallel to the axis of the filter bag 2. The control component 44 is used to control the movement of the gas distributor 41. The gas distributor 41 is provided with jet holes 411 on the side facing the inner side wall of the filter bag 2. The gas distributor 41 is in an annular tube shape and is coaxial with the filter bag 2. The gas transmission pipe 43 is a flexible pipe, one end of which is communicated with the inner cavity of the gas distributor 41, and the other end passes through the filtration hole 12 and is communicated with the gas source (not shown in the figure). The jet holes 411 are located on the outer edge side wall of the gas distributor 41, that is, each jet hole 411 is directly opposite to the inner wall of the filter bag 2. A connecting frame 42 is fixedly connected to the inner edge of the gas distributor 41. The connecting frame 42 includes a central body 421 and four rigid connecting rods 422. The central body 421 is located between the four support columns 31, and an iron ring through which the support columns 31 pass is also fixedly connected to the central body 421. The four rigid connecting rods 422 are arranged in an array around the central body 421. One end of the rigid connecting rod 422 is connected to the central body 421, and the other end is connected to the gas distributor 41. A single rigid connecting rod 422 passes through the gap between two adjacent support columns 31, so that the central body 421 is always located at the central position of the gas distributor 41.

[0034] As Figure 2 and 4As shown, during the movement of the uniform gas 41 in the filter bag 2, the outer edge of the uniform gas 41 applies abutment force to the inner wall of the filter bag 2 to deform the filter bag 2. A plurality of uniform gas rings 412 are sleeved on the uniform gas 41. The number of the uniform gas rings 412 is consistent with the number of the jet holes 411 and the two correspond one to one, that is, a single jet hole 411 is located in a uniform gas ring 412. A plurality of uniform gas holes 4113 are provided on the uniform gas ring 412. When the jet holes 411 eject airflow, the airflow can pass through the uniform gas holes 4113 and blow toward the filter bag 2. In a natural state, the inner diameter of the filter bag 2 is consistent with the outer diameter of the uniform gas 41. Therefore, the side of the uniform gas ring 412 that is away from the axis of the uniform gas 41 will generate abutment force on the inner wall of the filter bag 2 to deform the filter bag 2. The specific deformation form is: the outer part of the filter bag 2 where the force is applied expands, and the dust attached here is easier to detach from the filter bag 2, thereby improving the effect of back-blowing dust removal.

[0035] like Figure 2 , 3 As shown in Figures 4 and 5, when the uniform gas 41 moves, the uniform gas ring 412 is subjected to friction and can rotate on the uniform gas 41. Two uniform gas 41 and two connecting frames 42 are provided, and the two uniform gas 41 are arranged along the axial direction of the filter cartridge. The uniform gas rings 412 on the two uniform gas 41 are arranged alternately along the circumference of the filter bag 2. When the two uniform gas 41 sweep the same area, the uniform gas rings 412 on the two uniform gas 41 have a more comprehensive overall contact area with the inner wall of the filter bag 2. A connecting spring 424 is connected between the central bodies 421 of the two support frames 3, and the expansion and contraction direction of the connecting spring 424 is parallel to the sliding direction of the uniform gas 41. The control assembly 44 includes a control motor 441, a control gear 442 and a control push-pull rod 443. The control motor 441 is located in the clean air chamber 14 and connected to the box body 1. The control gear 442 is coaxially connected to the output shaft of the control motor 441. A control rack 444 is integrally formed on the control push-pull rod 443. The control rack 444 is meshed with the control gear 442. The rotation of the control gear 442 can drive the control push-pull rod 443 to move. The control push-pull rod 443 is located between the four support columns 31, and the length direction and the movement direction are parallel to the length direction of the support columns 31. A clearance hole 423 is coaxially opened on the central body 421 relatively close to the partition 11. The control push-pull rod 443 passes through the clearance hole 423. The end of the control push-pull rod 443 is fixedly connected with a push-pull block 445. The push-pull block 445 is located between the two central bodies 421. The width of the push-pull block 445 is greater than the width of the clearance hole 423. In the process of controlling the movement of the push-pull rod 443, the push-pull block 445 can apply a thrust to the lower center body 421, or apply a pulling force to the upper center body 421, thereby driving one of the connecting frames 42 to move, and one of the connecting frames 42 then applies a pulling force to the other connecting frame 42 through the connecting spring 424 to move it, ultimately achieving the purpose of driving the two gas bodies 41 to move in the same direction.

[0036] The implementation principle of a high-efficiency self-cleaning pulse dust collector in the embodiment of the present application is: When back-blowing dust removal is performed, the gas source delivers high-pressure airflow to the uniform gas 41, and the gas is ejected through the jet hole 411 and passes through the uniform gas hole 4113 to act on the filter bag 2, and the dust attached to the filter bag 2 is blown away from the filter bag 2 under the action of the airflow. At the same time, the control component 44 drives the two uniform gas 41 to move repeatedly, during which the uniform gas rings 412 on the uniform gas 41 abut against various locations on the inner wall of the filter bag 2, and the filter bag 2 is deformed at the locations where it is moved, making it easier for the dust attached to fall off.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency self-cleaning pulse dust collector, comprising a housing (1), a filter bag (2) and a back-blowing mechanism (4), wherein a partition (11) is fixedly arranged in the housing (1), one side of the partition (11) is a filter chamber (13), and the other side is a clean air chamber (14), the partition (11) is provided with a filter hole (12), the filter bag (2) is mounted on the partition (11) and is located in the filter chamber (13), the back-blowing mechanism (4) is used to transport an airflow from the filter bag (2) to the filter bag (2) toward one side of the filter chamber (13), and is characterized in that: The filter bag (2) is cylindrical and coaxial with the filter hole (12). The back-blowing mechanism (4) comprises an air source, an air supply pipe (43), a uniform gas (41) and a control component (44). The uniform gas (41) is located inside the filter bag (2) and slides relative to the partition (11). A jet hole (411) is provided on one side of the inner wall of the filter bag (2). The air source delivers air flow into the uniform gas (41) through the air supply pipe (43). The control component (44) is used to control the movement of the uniform gas (41).

2. A high-efficiency self-cleaning pulse dust collector according to claim 1, characterized in that: The moving direction of the uniform gas (41) relative to the partition (11) is parallel to the axis of the filter bag (2); the uniform gas (41) is in the shape of an annular tube and is coaxial with the filter bag (2); the gas delivery pipe (43) is in communication with the inner cavity of the uniform gas (41); the jet holes (411) are located on the outer edge side wall of the uniform gas (41); a plurality of the jet holes (411) are provided and are arranged in a circumferential array around the uniform gas (41).

3. A high-efficiency self-cleaning pulse dust collector according to claim 2, characterized in that: A support frame (3) is provided on one side of the partition (11) facing the filter chamber (13) and located inside the filter bag (2); the support frame (3) comprises a support column (31) and a support plate (32); the length direction of the support column (31) is perpendicular to the partition (11); one end of the support column (31) is connected to the partition (11), and the other end is fixedly connected to the support plate (32); the support plate (32) abuts against the inner bottom wall of the filter bag (2), and the edge of the support plate (32) contacts the inner side wall of the filter bag (2).

4. The high-efficiency self-cleaning pulse dust collector according to claim 3 is characterized in that: A plurality of support columns (31) are provided, and the plurality of support columns (31) are arranged in a circular array around the axis of the filter hole (12); the inner edge of the uniform gas (41) is fixedly connected to a connecting frame (42); the connecting frame (42) comprises a central body (421) and a plurality of rigid connecting rods (422); the central body (421) is located between all the support columns (31); one end of the rigid connecting rod (422) is connected to the central body (421), and the other end is connected to the uniform gas (41); the rigid connecting rod (422) passes through the gap between two adjacent support columns (31).

5. A high-efficiency self-cleaning pulse dust collector according to any one of claims 2 to 4, characterized in that: The outer edge of the uniform gas (41) exerts abutting force on the inner wall of the filter bag (2).

6. A high-efficiency self-cleaning pulse dust collector according to claim 5, characterized in that: The gas equalizing ring (41) is sleeved with a plurality of gas equalizing rings (412), the number of the gas equalizing rings (412) is consistent with the number of the gas injection holes (411), and the two correspond one to one, the gas injection holes (411) are located inside the gas equalizing ring (412), a plurality of gas equalizing holes (4113) are opened on the gas equalizing ring (412), and the gas equalizing ring (412) is in contact with the inner wall of the filter bag (2).

7. A high-efficiency self-cleaning pulse dust collector according to claim 6, characterized in that: The gas leveling devices (41) and the connecting frame (42) are each provided with two gas leveling devices (41), the two gas leveling devices (41) are arranged along the axial direction of the filter cartridge, and the gas leveling rings (412) on the two gas leveling devices (41) are arranged alternately along the circumference of the filter bag (2).

8. The high-efficiency self-cleaning pulse dust collector according to claim 7 is characterized in that: A connecting spring (424) is connected between the central bodies (421) of the two support frames (3), and the expansion and contraction direction of the connecting spring (424) is parallel to the sliding direction of the equalizing gas (41).

9. The high-efficiency self-cleaning pulse dust collector according to claim 7 is characterized in that: The control assembly (44) comprises a control motor (441), a control gear (442) and a control push-pull rod (443); the control motor (441) is connected to the housing (1); the control gear (442) is coaxially connected to the output shaft of the control motor (441); a control rack (444) is fixedly connected to the control push-pull rod (443); the control rack (444) and the control gear (442) are meshed; a clearance hole (423) is coaxially opened on the center body (421) relatively close to the partition (11); the control push-pull rod (443) passes through the clearance hole (423); a push-pull block (445) is fixedly connected to the end of the control push-pull rod (443); the push-pull block (445) is located between the two center bodies (421); and the width of the push-pull block (445) is greater than the width of the clearance hole (423).

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