Forced intervention type dust removal device for bag-type dust remover

Abstract

The forced intervention type dust removal device comprises a sealing ring, a first annular channel is arranged in the sealing ring, a second annular channel is arranged on the inner side of the first annular channel, a plurality of groups of stabilizing rings are connected to the lower portion of the sealing ring through a supporting pipe, the stabilizing rings are arranged at intervals, and a plurality of groups of air nozzles are arranged on the side walls of the stabilizing rings. And the adjacent air taps are respectively communicated with the first ring channel and the second ring channel. The air nozzles on the stabilizing ring can stably support the cloth bag, and when one air nozzle sucks air, the adjacent air nozzles blow air, so that the cloth bag vibrates at high frequency in a small range, dust on the cloth bag can be peeled off, the vibration amplitude of the cloth bag can be reduced, the damage probability of the cloth bag is reduced, and the service life of the cloth bag is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust collectors, and specifically refers to a forced intervention type dust removal device for a bag filter. Background Art

[0002] A bag filter is a dust removal device for treating dust. After long-term operation, it needs to be cleaned to extend the service life of the dust collector. Four dust removal methods are commonly used for bag filters: physical cleaning, acoustic cleaning, pulse cleaning, and reverse air cleaning.

[0003] Among them, the advantages of pulse cleaning are relatively prominent. It can clean the dust while working, and its dust removal effect is better. In pulse cleaning, compressed air is introduced into the venturi tube, inducing the surrounding air to be sprayed into the bag in a very short time, causing the bag to produce pulsed expansion vibration and, under the action of the reverse air flow, peeling off the dust on the bag. However, this dust removal method also has relatively large disadvantages. Since it uses high-pressure compressed air, when the bag expands and contracts at high frequency, the damage to the dust removal bag is relatively serious. Therefore, when using this method for cleaning, it is necessary to limit its use to bags that are thick, wear-resistant, and have strong tensile strength. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a forced intervention type dust removal device for a bag filter, which solves at least part of the above problems.

[0005] The technical solution adopted by the present invention is as follows: A forced intervention type dust removal device for a bag filter proposed by the present invention includes a fixed frame, and alternating vibration mechanisms are arrayed on the fixed frame. The spacing of the alternating vibration mechanisms is the same as the spacing of the bags of the bag filter, so as to insert all the alternating vibration mechanisms into the bags at one time.

[0006] Further, a plurality of longitudinal air pipes are provided on the fixed frame. A first cavity is provided on the longitudinal air pipe. A second cavity is provided on one side of the first cavity. A first transverse air pipe and a second transverse air pipe are respectively provided on the longitudinal air pipe. The first transverse air pipe is communicated with the first cavity, and the second transverse air pipe is communicated with the second cavity.

[0007] Further, a first interface is provided on the first transverse air pipe, and a second interface is provided on the second transverse air pipe. The first interface and the second interface are communicated with the air source for alternating suction and exhaust.

[0008] Further, the alternating vibration mechanism includes a sealing ring. The sealing ring is provided on the fixed frame. A first annular channel is provided inside the sealing ring. A second annular channel is provided inside the first annular channel. A third interface and a fourth interface are respectively provided on the upper wall of the sealing ring. The lower end of the third interface is communicated with the first annular channel, and the lower end of the fourth interface is communicated with the second annular channel; Further, the upper end of the third interface communicates with the first cavity, and the upper end of the fourth interface communicates with the second cavity.

[0009] Further, the alternating vibrator further includes a plurality of sets of stabilizing rings arranged at intervals. The stabilizing rings are connected below the sealing ring through support pipes. Being arranged at intervals in the vertical direction can provide a certain supporting effect on the inner wall of the cloth bag at different heights.

[0010] Further, in order to apply the alternately changing air flow in the first annular channel and the second annular channel to the cloth bag to cause the cloth bag to generate high-frequency vibration, a plurality of sets of air nozzles are provided on the side wall of the stabilizing ring, and adjacent air nozzles communicate with the first annular channel and the second annular channel respectively.

[0011] Further, a plurality of sets of first working holes are provided in the first annular channel, and a plurality of sets of second working holes are provided in the second annular channel. The first working holes and the second working holes are arranged at intervals. A lower restraint ring is provided on the lower wall of the sealing ring, and a plurality of sets of second positioning holes are provided on the lower restraint ring. Adjacent second positioning holes communicate with the first working holes and the second working holes respectively; Further, a plurality of sets of first positioning holes are provided on the stabilizing ring, and the first positioning holes communicate with the air nozzles. The support pipe connects the first positioning holes in the uppermost stabilizing ring with the second positioning holes, and the support pipe connects the first positioning holes on the vertically adjacent stabilizing rings.

[0012] Further, the first positioning holes and the second positioning holes are circumferentially arrayed in the circumferential direction, the first working holes and the second working holes are also circumferentially arrayed in the circumferential direction, and the air nozzles are circumferentially arrayed in the circumferential direction.

[0013] Further, a sealing gasket is provided on the lower wall of the sealing ring, and the sealing gasket is in sealing fit with the upper end opening of the cloth bag to prevent the dust peeled off by the vibration inside the cloth bag from rising.

[0014] Further, in order to be applicable to cloth bag dust removal with different pipe diameters, a plurality of sets of extension pipes are provided on the side wall of the stabilizing ring, the air nozzles are slidably sleeved on the extension pipes, a flange is provided at the end of the air nozzles, and a spring is provided between the flange and the side wall of the stabilizing ring.

[0015] The beneficial effects obtained by the present invention are as follows: The stabilizing rings are spaced apart in the vertical direction of the cloth bag, and the uniformly and spaced air nozzles on the stabilizing rings can provide stable support for the cloth bag. When one air nozzle inhales, the adjacent air nozzle blows air. The inhaling air nozzle adsorbs and fixes the cloth bag, and the blowing air nozzle expands the cloth bag, so that the cloth bag vibrates at a high frequency in a small range, which can not only peel off the dust on the cloth bag, but also reduce the vibration amplitude of the cloth bag, reduce the probability of damage to the cloth bag, and improve the service life of the cloth bag. Brief Description of the Drawings

[0016] Figure 1Schematic structural diagram of a forced intervention dust removal device for a bag filter in an embodiment of the present invention; Figure 2 Partial cross-sectional view of the fixed frame; Figure 3 Schematic structural diagram of the alternating vibration mechanism; Figure 4 Cross-sectional view of the stabilizing ring; Figure 5 Cross-sectional view of the sealing ring.

[0017] Wherein, 1. Fixed frame, 2. Alternating vibration mechanism, 3. Vertical air pipe, 4. First horizontal air pipe, 5. Second horizontal air pipe, 6. First interface, 7. Second interface, 8. Sealing ring, 9. Support pipe, 10. Stabilizing ring, 11. Third interface, 12. Fourth interface, 13. Sealing gasket, 14. First positioning hole, 15. Extension pipe, 16. Air nozzle, 17. Flange, 18. Spring, 19. First annular channel, 20. Second annular channel, 21. First working hole, 22. Second working hole, 23. Lower binding ring, 24. Second positioning hole, 25. First cavity, 26. Second cavity.

[0018] The attached drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the attached drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0021] As Figure 1 shown, a forced intervention dust removal device for a bag filter proposed in an embodiment of the present invention includes a fixed frame 1, on which an alternating vibration mechanism 2 is arrayed and distributed. The alternating vibration mechanism 2 is used for vibrating and dust removing the bag. The spacing of the alternating vibration mechanism 2 is the same as the bag spacing of the bag filter, so as to insert all the alternating vibration mechanisms 2 into the bag at one time.

[0022] As Figure 2 shown, multiple groups of longitudinal air pipes 3 are provided on the fixing frame 1. A first cavity 25 is provided on the longitudinal air pipe 3. A second cavity 26 is provided on one side of the first cavity 25. The alternating vibration mechanism 2 is communicated with both the first cavity 25 and the second cavity 26. A first transverse air pipe 4 and a second transverse air pipe 5 are respectively provided on the longitudinal air pipe 3. The first transverse air pipe 4 is communicated with the first cavity 25, and the second transverse air pipe 5 is communicated with the second cavity 26.

[0023] A first interface 6 is provided on the first transverse air pipe 4, and a second interface 7 is provided on the second transverse air pipe 5. The first interface 6 and the second interface 7 are communicated with the air source for alternating suction and inflation. That is, when positive pressure is formed by inflating in the first interface 6, negative pressure is formed by suction in the second interface 7. When positive pressure is formed by inflating in the second interface 7, negative pressure is formed by suction in the first interface 6. Under the action of the first cavity 25 and the second cavity 26, in cooperation with the first interface 6 and the second interface 7, an air flow for alternating suction of gas will also be formed in the alternating vibration mechanism 2. The positive pressure air flow in the alternating vibration mechanism 2 can blow air into the cloth bag, causing the local expansion of the cloth bag. The negative pressure air flow in the alternating vibration mechanism 2 can fix the cloth bag, preventing the cloth bag from expanding too much. The two kinds of gases make the surface of the cloth bag fluctuate frequently and alternately, so as to form the effect of vibration dust removal. At the same time, it can protect the cloth bag and prevent the cloth bag from being damaged due to excessive deformation.

[0024] As Figure 3 and Figure 5 shown, the alternating vibration mechanism 2 includes a sealing ring 8. The sealing ring 8 is provided on the fixing frame 1. A first annular channel 19 is provided inside the sealing ring 8. A second annular channel 20 is provided inside the first annular channel 19. Third interfaces 11 and fourth interfaces 12 are respectively provided on the upper wall of the sealing ring 8. The lower end of the third interface 11 is communicated with the first annular channel 19, and the lower end of the fourth interface 12 is communicated with the second annular channel 20; Combining Figure 2 shown, the upper end of the third interface 11 is communicated with the first cavity 25, and the upper end of the fourth interface 12 is communicated with the second cavity 26, so that the first annular channel 19 and the second annular channel 20 are alternately sucked and blown.

[0025] As Figure 1 shown, the alternating vibration mechanism further includes multiple groups of stabilizing rings 10 arranged at intervals. The stabilizing rings 10 are connected below the sealing ring 8 through support pipes 9. That is, the stabilizing rings 10 are arranged at intervals in the vertical direction to adapt to the arrangement direction of the cloth bags in the bag filter. Arranging at intervals in the vertical direction can provide a certain supporting effect on the inner wall of the cloth bag at different heights.

[0026] As Figure 4As shown in the figure, in order to apply the alternating airflow in the first annular channel 19 and the second annular channel 20 to the cloth bag, so as to cause the cloth bag to generate high-frequency vibration, multiple groups of air nozzles 16 are provided on the side wall of the stabilizing ring 10, and adjacent air nozzles 16 are respectively communicated with the first annular channel 19 and the second annular channel 20.

[0027] Combined with Figure 5 As shown in the figure, multiple groups of first working holes 21 are provided in the first annular channel 19, multiple groups of second working holes 22 are provided in the second annular channel 20, the first working holes 21 and the second working holes 22 are arranged at intervals, a lower restraint ring 23 is provided on the lower wall of the sealing ring 8, and multiple groups of second positioning holes 24 are provided on the lower restraint ring 23. Adjacent second positioning holes 24 are respectively communicated with the first working holes 21 and the second working holes 22.

[0028] Multiple groups of first positioning holes 14 are provided on the stabilizing ring 10. The first positioning holes 14 are communicated with the air nozzles 16. The support tube 9 communicates the first positioning holes 14 in the uppermost stabilizing ring 10 with the second positioning holes 24, and the support tube 9 communicates the first positioning holes 14 on the adjacent upper and lower stabilizing rings 10. Under the action of the first working holes 21, the second working holes 22, the support tube 9, the first positioning holes 14 and the second positioning holes 24, airflows with different directions will alternately appear in adjacent air nozzles 16. One group of airflows enters the air nozzles 16 through the first working holes 21, the support tube 9, the second positioning holes 24 and the first positioning holes 14, and the other group of airflows enters the air nozzles 16 through the second working holes 22, the support tube 9, the second positioning holes 24 and the first positioning holes 14. The two groups of airflows have opposite directions and respectively generate positive pressure airflows and negative pressure airflows with different directions, so as to apply forces with different directions to the positions on the inner wall of the cloth bag that are close to each other, causing the cloth bag to vibrate while reducing the amplitude of local parts of the cloth bag and protecting the cloth bag.

[0029] In order to make the vibration of the cloth bag more stable, make the amplitudes at each place uniform, and avoid the situation of large local fluctuations and small local fluctuations, the first positioning holes 14 and the second positioning holes 24 are arranged in a circumferential array in the circumferential direction, the first working holes 21 and the second working holes 22 are also arranged in a circumferential array in the circumferential direction, and the air nozzles 16 are arranged in a circumferential array in the circumferential direction.

[0030] A sealing gasket 13 is provided on the lower wall of the sealing ring 8. The sealing gasket 13 is in sealing cooperation with the upper end opening of the cloth bag to prevent the dust peeled off by the internal vibration of the cloth bag from rising.

[0031] In order to be applicable to cloth bag dust removal with different pipe diameters, such as Figure 4As shown in the figure, multiple groups of extension tubes 15 are provided on the side wall of the stabilizing ring 10. The air nozzle 16 is slidably sleeved on the extension tube 15. A flange 17 is provided at the end of the air nozzle 16. A spring 18 is provided between the flange 17 and the side wall of the stabilizing ring 10. The spring 18 always pushes the air nozzle 16 outwards, so that the air nozzle 16 always fits against the inner wall of the cloth bag, so that the air flow can better act on the surface of the cloth bag. When the diameter of the cloth bag is small, the inner wall of the cloth bag will compress the air nozzle 16 to overcome the resistance of the spring 18, causing the air nozzle 16 to contract inwards.

[0032] The specific working principle is as follows: Place the fixing frame 1 at the upper end of the bag filter, insert the alternating vibration mechanism 2 into the cloth bags in turn, connect the first interface 6 and the second interface 7 to the air source. The air source can alternately inject compressed gas or suck out gas into the first interface 6 and the second interface 7 according to the set frequency. The air flow forms two channels, passing through the first horizontal air pipe 4, the first cavity 25, the first interface 6, and the second horizontal air pipe 5, the second cavity 26, the second interface 7 respectively, and finally entering the first annular channel 19 and the second annular channel 20 respectively. When positive pressure gas enters the first interface 6 and gas is sucked out from the second interface 7, positive pressure gas is filled in the first annular channel 19, and negative pressure exists in the second annular channel 20, sucking out gas outwards. When gas is sucked out from the first interface 6 and positive pressure gas enters the second interface 7, negative pressure exists in the first annular channel 19, and positive pressure gas is filled in the second annular channel 20.

[0033] The air flow in the first annular channel 19 passes through the first working hole 21, the second positioning hole 24 and the support pipe 9 and enters the first positioning hole 14. The air flow in the second annular channel 20 passes through the second working hole 22, the second positioning hole 24 and the support pipe 9 and enters the adjacent first positioning hole 14, so that the air flow directions between any adjacent first positioning holes 14 on the stabilizing ring 10 are opposite. The air flow in the first positioning hole 14 will be transmitted into the air nozzle 16, and the air flow will finally act on the inner wall of the cloth bag.

[0034] In some embodiments, the air flow directly enters the air nozzle 16 from the first positioning hole 14. The air nozzle 16 blows the cloth bag in the circumferential direction, causing the cloth bag to expand. The adjacent air nozzles 16 will provide an adsorption force to pull the cloth bag towards the center of the inner circle, so that the inner wall of the cloth bag bulges outwards uniformly in the circumferential direction, and the positions between the bulges will sink inwards. As the air flow direction in the air nozzle 16 changes, the bulges and depressions on the cloth bag will change in the opposite direction, the bulges will sink, and the depressions will bulge, causing the cloth bag to form a stable wave in the circumferential direction, thereby peeling off the dust on the cloth bag.

[0035] In some embodiments, when the model of the cloth bag changes, the inner wall size of the cloth bag changes. The air nozzle 16 is configured to be slidable on the extension tube 15. The air nozzle 16 will move telescopically under the action of the spring 18, so that the working radius of the air nozzle 16 changes.

[0036] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0037] The above description of the present invention and its embodiments is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the spirit of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A forced intervention type dust removal device for a bag dust collector, including a fixed frame (1), characterized in that, Further comprising: A sealing ring (8), which is arranged on the fixed frame (1) and seals the upper port of the cloth bag. A first annular channel (19) is arranged inside the sealing ring (8), and a second annular channel (20) is arranged inside the first annular channel (19). The first annular channel (19) and the second annular channel (20) are configured to alternately suck air and blow air into the annular channels from the outside; Multiple groups of stabilizing rings (10), which are coaxially arranged below the sealing ring (8) through a support pipe (9). The stabilizing rings (10) are inserted into the cloth bag and fit against its inner wall. The stabilizing rings (10) are arranged at intervals in the vertical direction. Multiple groups of air nozzles (16) are arranged on the side walls of the stabilizing rings (10). Adjacent air nozzles (16) are respectively communicated with the first annular channel (19) and the second annular channel (20).

2. The forced intrusion type dust removal device for a bag filter according to claim 1, characterized in that: Multiple groups of extension pipes (15) are arranged on the side walls of the stabilizing rings (10). The air nozzles (16) are slidably sleeved on the extension pipes (15). A flange (17) is arranged at the end of the air nozzles (16). A spring (18) is arranged between the flange (17) and the side wall of the stabilizing rings (10).

3. The forced intrusion type dust removal device for a bag filter according to claim 2, wherein: Multiple groups of first working holes (21) are arranged in the first annular channel (19), and multiple groups of second working holes (22) are arranged in the second annular channel (20). The first working holes (21) and the second working holes (22) are arranged at intervals. A lower binding ring (23) is arranged on the lower wall of the sealing ring (8). Multiple groups of second positioning holes (24) are arranged on the lower binding ring (23). Adjacent second positioning holes (24) are respectively communicated with the first working holes (21) and the second working holes (22).

4. The forced intervention type dust removal device for a bag filter according to claim 3, characterized in that: Multiple groups of first positioning holes (14) are arranged on the stabilizing rings (10). The first positioning holes (14) are communicated with the air nozzles (16). The support pipe (9) communicates the first positioning holes (14) and the second positioning holes (24), and the support pipe (9) communicates the first positioning holes (14) on the vertically adjacent stabilizing rings (10).

5. The forced intervention type dust removal device for a bag filter according to claim 1, characterized in that: A third interface (11) and a fourth interface (12) are respectively arranged on the upper wall of the sealing ring (8). The third interface (11) is communicated with the first annular channel (19), and the fourth interface (12) is communicated with the second annular channel (20).

6. The forced intervention type dust removal device for a bag filter according to claim 5, characterized in that: Multiple groups of longitudinal air pipes (3) are arranged on the fixed frame (1). A first cavity (25) is arranged on the longitudinal air pipes (3). A second cavity (26) is arranged on one side of the first cavity (25). The third interface (11) is communicated with the first cavity (25), and the fourth interface (12) is communicated with the second cavity (26).

7. The forced intervention type dust removal device for a bag filter according to claim 6, characterized in that: A first transverse air pipe (4) and a second transverse air pipe (5) are respectively arranged on the longitudinal air pipes (3). The first transverse air pipe (4) is communicated with the first cavity (25), and the second transverse air pipe (5) is communicated with the second cavity (26).

8. The forced intrusion type dust removal device for a bag filter according to claim 7, characterized in that: A first interface (6) is arranged on the first transverse air pipe (4), and a second interface (7) is arranged on the second transverse air pipe (5). The first interface (6) and the second interface (7) are communicated with a gas source for alternately sucking and blowing air.

9. The forced intrusion type dust removal device for a bag filter according to claim 1, characterized in that: A sealing gasket (13) is arranged on the lower wall of the sealing ring (8).

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