Corrugated dust removal filter bag and bag filter

Abstract

The present invention provides a corrugated dust removal filter bag and a bag - type dust collector. The corrugated dust removal filter bag includes a bag body, an elastic band, a support framework, a lifting frame, and a driving assembly. The bag body is provided with a plurality of transverse corrugations along the length direction; the elastic band is arranged on the side surface of the bag body and is connected to the transverse corrugations; the support framework is arranged inside the bag body, and both ends are connected to both ends of the bag body to support the bag body; the lifting frame is connected to the middle of the bag body and is adapted to reciprocate along the length direction of the bag body; the power output end of the driving assembly is connected to the lifting frame to drive the lifting frame to reciprocate along the length direction of the bag body; the bag - type dust collector includes the above - mentioned corrugated dust removal filter bag. For the corrugated dust removal filter bag and the bag - type dust collector provided by the present invention, during the dust cleaning operation, first, the driving assembly is used to drive the lifting frame to move, so that the transverse corrugations are unfolded without changing the total length of the bag body, and then reverse blowing dust cleaning is carried out, thereby effectively improving the dust cleaning effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental protection equipment, and particularly relates to a corrugated dust removal filter bag and a bag type dust collector. Background Art

[0002] A bag type dust collector is a dry dust filtering device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the fibrous fabric is used to filter the dust-containing gas. When the dust-containing gas enters the bag type dust collector, dust with large particles and high specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, and the gas is purified.

[0003] In order to further increase the filtering area, corrugated cloth bags are usually used. Corrugated cloth bags are also called corrugated bags, corrugated filter bags or star bags, etc. A corrugated cloth bag is a filter bag with a corrugated filter surface on the filtering surface. The filter material of the corrugated filter bag is folded and sewn, so that the filtering area is increased to 1.5 - 1.8 times the original on the basis of the original traditional circular filter bag.

[0004] The bag type dust collector usually uses the pulse reverse blowing method to clean the filter bag. Due to the complex corrugated structure of the corrugated cloth bag, during the reverse blowing process, it is difficult for the gas to evenly penetrate into each corrugation, resulting in incomplete cleaning of the corrugation of the cloth bag. This will not only cause the residual dust to gradually accumulate in the corrugation, increase the running resistance of the cloth bag, reduce the dust removal efficiency, but also, over time, cause the air permeability of the cloth bag to deteriorate due to excessive dust accumulation, shortening the service life of the cloth bag. Summary of the Invention

[0005] The present invention provides a corrugated dust removal filter bag and a bag type dust collector, aiming to solve the technical problems proposed in the above background art.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] In a first aspect, an embodiment of the present invention provides a corrugated dust removal filter bag, including:

[0008] A bag body, provided with a plurality of transverse corrugations along the length direction;

[0009] An elastic band, arranged on the side surface of the bag body and connected to the transverse corrugations;

[0010] A support skeleton, arranged inside the bag body, with both ends connected to both ends of the bag body, used to support the bag body;

[0011] A lifting frame, connected to the middle part of the bag body, suitable for reciprocating movement along the length direction of the bag body;

[0012] A driving component, the power output end of which is connected to the lifting frame, is used to drive the lifting frame to reciprocate along the length direction of the bag body.

[0013] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, the support framework includes a longitudinal support frame and a plurality of transverse support frames. The longitudinal support frame is arranged in the bag body along the length direction of the bag body; the transverse support frames correspond to the transverse pleats one by one, are used to support the transverse pleats, and the transverse support frames are in sliding cooperation with the longitudinal support frame.

[0014] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, the transverse support frame includes a pleat support ring and a connecting frame. The pleat support ring is arranged inside the transverse pleat and connected to the bag body, and the connecting frame is connected to the pleat support ring and is in sliding cooperation with the longitudinal support frame.

[0015] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, the longitudinal support frame includes a plurality of support rods. The plurality of support rods are arranged at intervals along the circumferential direction of the bag body. The connecting frames arranged at the top and bottom of the bag body are fixedly connected to the support rods, and the other connecting frames are in sliding cooperation with the support rods.

[0016] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, the connecting frame includes a limiting ring and a plurality of connecting rods. The limiting ring is in sliding cooperation with the support rod. The plurality of connecting rods are arranged along the circumferential direction of the limiting ring, one end of which is connected to the limiting ring and the other end is connected to the pleat support ring.

[0017] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, the lifting frame is arranged outside the bag body and is connected to the middle of the bag body.

[0018] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, the driving component includes a screw rod, a guide rod and a motor assembly. The screw rod and the guide rod are both fixedly arranged on the side surface of the bag body and pass through the lifting frame, and are parallel to the axis of the bag body. The lifting frame is in threaded cooperation with the screw rod, and the guide rod is in sliding cooperation with the lifting frame; the motor assembly is fixedly arranged, and the power output end is connected to the screw rod to drive the screw rod to rotate.

[0019] Combined with the first aspect, in a possible implementation manner of the pleated dust removal filter bag provided by the present invention, it further includes a mounting snap ring. The mounting snap ring is arranged at the top of the bag body and is connected to the top of the bag body and the support framework. A card slot is arranged along the circumference on the side surface of the mounting snap ring.

[0020] In a second aspect, an embodiment of the present invention provides a bag - type dust collector, which includes the above - mentioned corrugated dust - filtering bag.

[0021] The beneficial effects of the corrugated dust - filtering bag provided by the present invention are as follows: Compared with the prior art, for the corrugated dust - filtering bag provided by the present invention, multiple transverse corrugations are provided on the bag body, and an elastic band is arranged on the side to connect with the transverse corrugations, so that the transverse corrugations are kept in a semi - unfolded state to achieve the effect of increasing the filtering area; during pulse back - blowing, first, the driving assembly drives the lifting frame to move upward or downward, driving some of the transverse corrugations on the bag body to unfold and some to be compressed, and then performing back - blowing; after that, the driving assembly drives the lifting frame to move in the reverse direction, driving the previously compressed transverse corrugations to unfold and compressing the previously unfolded transverse corrugations, and then performing back - blowing again, and driving the lifting frame to reset, completing the pulse dust cleaning operation of the bag body; that is, for the corrugated dust - filtering bag provided by the present invention, first, the driving assembly drives the lifting frame to move, and without changing the total length of the bag body, the transverse corrugations are unfolded, and then back - blowing and dust cleaning are performed, thereby effectively improving the dust cleaning effect.

[0022] The beneficial effects of the bag - type dust collector provided by the present invention are as follows: Compared with the prior art, for the bag - type dust collector provided by the present invention, when using the above - mentioned corrugated dust - filtering bag, during the dust cleaning operation, first, the driving assembly drives the lifting frame to move, and without changing the total length of the bag body, the transverse corrugations are unfolded, and then back - blowing and dust cleaning are performed, thereby effectively improving the dust cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial structural schematic diagram of the bag - type dust collector provided by an embodiment of the present invention;

[0024] Figure 2 It is a three - dimensional structural schematic diagram of the bag body and the support frame in the corrugated dust - filtering bag provided by an embodiment of the present invention;

[0025] Figure 3 It is a cross - sectional structural schematic diagram of the bag body and the support frame in the corrugated dust - filtering bag provided by an embodiment of the present invention;

[0026] Figure 4 is Figure 3 the enlarged view of part A in

[0027] Figure 5 It is a three - dimensional structural schematic diagram of the support frame in the corrugated dust - filtering bag provided by an embodiment of the present invention;

[0028] Explanation of the reference numerals:

[0029] 10. Bag body; 11. Transverse corrugation; 20. Elastic band; 31. Corrugation support ring; 32. Limit ring;

[0030] 33. Connecting rod; 34. Support rod; 40. Lifting frame; 51. Screw; 52. Guide rod;

[0031] 53. Motor assembly; 60. Mounting snap ring; 70. Ceiling panel. Detailed implementation manners

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present application and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0034] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0035] Unless otherwise specifically stated, the relative arrangements of the components and steps set forth in these embodiments, numerical expressions and values do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0037] For the sake of convenience in description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways, and corresponding interpretations should be made for the spatial relative descriptions used here.

[0038] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present application.

[0039] Please refer to Figures 1 to 5 , and now the pleated dust removal filter bag provided by the present invention will be described. The pleated dust removal filter bag includes a bag body 10, an elastic band 20, a support frame, a lifting frame 40 and a driving assembly. The bag body 10 is provided with a plurality of transverse pleats 11 along the length direction; the elastic band 20 is arranged on the side of the bag body 10 and is connected to the transverse pleats 11; the support frame is arranged inside the bag body 10, and both ends are connected to both ends of the bag body 10 to support the bag body 10, and the top of the support frame is fixedly connected to the flower plate 70 in the dust collector, specifically, it can be snap-connected or bolt-connected; the lifting frame 40 is connected to the middle of the bag body 10 and is adapted to reciprocate along the length direction of the bag body 10; the power output end of the driving assembly is connected to the lifting frame 40 to drive the lifting frame 40 to reciprocate along the length direction of the bag body 10. The flower plate 70 is the mounting plate of the bag body 10, and a plurality of mounting holes are opened thereon, and the bag body 10 extends into the lower side of the flower plate 70 from the mounting holes.

[0040] It should be noted that the elastic band 20 provided on the side of the bag body 10 is connected to the transverse folds 11, so that the transverse folds 11 remain in a semi-expanded state when not under other external forces, so as to achieve the effect of increasing the filtration area; during pulse backwashing, first drive the lifting frame 40 to move upward or downward through the driving component, drive some of the transverse folds 11 on the bag body 10 to expand and some of the transverse folds 11 to be compressed, and then perform backwashing; after that, drive the lifting frame 40 to move in the reverse direction through the driving component, drive the previously compressed transverse folds 11 to expand and compress the previously expanded transverse folds 11, perform backwashing once again, and drive the lifting frame 40 to reset to complete the pulse dust cleaning operation of the bag body 10. In this way, without changing the total length of the bag body 10, the transverse folds 11 of the bag body 10 can be expanded without the need to increase the longitudinal installation space.

[0041] Specifically, first drive the lifting frame 40 to move downward through the driving component, expand the transverse folds 11 above the lifting frame 40, compress the transverse folds 11 below the lifting frame 40, and then perform backwashing. At this time, the transverse folds 11 above the lifting frame 40 are expanded, so the dust cleaning effect of the bag body 10 above the lifting frame 40 can be effectively guaranteed; after that, drive the lifting frame 40 to move upward through the driving component, compress the transverse folds 11 above the lifting frame 40, expand the transverse folds 11 below the lifting frame 40, and perform backwashing again. At this time, the transverse folds 11 below the lifting frame 40 are expanded, so the dust cleaning effect of the bag body 10 below the lifting frame 40 can be effectively guaranteed, thereby improving the overall dust cleaning effect of the bag body 10.

[0042] The elastic band 20 is a cord or strip with elasticity and has enough stretching amount to adapt to the change in the length of the local part of the bag body 10 caused by the expansion of the local transverse folds 11.

[0043] The beneficial effect of the pleated dust filter bag provided by the embodiment of the present invention is that: compared with the prior art, the pleated dust filter bag provided by the embodiment of the present invention first drives the lifting frame 40 to move through the driving component, expands the transverse folds 11 without changing the total length of the bag body 10, and then performs backwashing and dust cleaning, thereby effectively improving the dust cleaning effect.

[0044] As Figure 4 and Figure 5 shown, in a specific implementation manner of the pleated dust filter bag provided by the embodiment of the present invention, the support skeleton includes a longitudinal support frame and a plurality of transverse support frames. The longitudinal support frame is arranged in the bag body 10 along the length direction of the bag body 10; the transverse support frames correspond to the transverse folds 11 one by one and are used to support the transverse folds 11 to prevent the transverse folds 11 from deforming. The transverse support frames are slidably matched with the longitudinal support frame.

[0045] Specifically, as Figure 4 and Figure 5As shown in the figure, in a specific implementation manner of the corrugated dust removal filter bag provided by the embodiment of the present invention, the transverse support frame includes a corrugated support ring 31 and a connecting frame. The corrugated support ring 31 is arranged inside the transverse corrugation 11 and connected to the bag body 10. The connecting frame is connected to the corrugated support ring 31 and is in sliding cooperation with the longitudinal support frame.

[0046] It should be noted that the corrugated support ring 31 is a ring body with a certain rigidity such as a metal ring or a plastic ring, which can effectively support at the large diameter of the transverse corrugation 11 and is connected to the bag body 10 by means of bonding, sewing, etc.

[0047] As Figure 2 and Figure 5 shown in the figure, in a specific implementation manner of the corrugated dust removal filter bag provided by the embodiment of the present invention, the longitudinal support frame includes a plurality of support rods 34. The plurality of support rods 34 are arranged at intervals along the circumferential direction of the bag body 10. The connecting frames arranged at the top and bottom of the bag body 10 are fixedly connected to the support rods 34, and other connecting frames are in sliding cooperation with the support rods 34.

[0048] Specifically, the number of the support rods 34 is two or more. In this embodiment, the number of the support rods 34 is four. The two ends of the support rods 34 are respectively welded or threadedly connected to the connecting frames at the top and bottom of the bag body 10 to achieve the effect of relatively fixed positions.

[0049] As Figure 4 and Figure 5 shown in the figure, in a specific implementation manner of the corrugated dust removal filter bag provided by the embodiment of the present invention, the connecting frame includes a limiting ring 32 and a plurality of connecting rods 33. The limiting ring is in sliding cooperation with the support rod 34. The plurality of connecting rods 33 are arranged along the circumferential direction of the limiting ring 32, one end is connected to the limiting ring 32, and the other end is connected to the corrugated support ring 31.

[0050] It should be noted that the support rod 34 passes through the limiting ring 32 and is in sliding cooperation with the limiting ring 32 to limit the movement direction of the transverse support frame composed of the corrugated support ring 31, the connecting rod 33 and the limiting ring 32, avoiding the distortion and skew of the bag body 10. The two ends of the support rod 34 are respectively welded or threadedly connected to the limiting rings 32 at the top and bottom of the bag body 10.

[0051] As Figure 1 shown in the figure, in a specific implementation manner of the corrugated dust removal filter bag provided by the embodiment of the present invention, the lifting frame 40 is arranged outside the bag body 10 and is connected to the middle of the bag body 10.

[0052] It should be noted that the lifting frame 40 is directly connected to the elastic band 20 and thus indirectly connected to the bag body 10 to avoid damaging the bag body 10 at the connection. Specifically, the lifting frame 40 is fixedly connected to the elastic band 20 by means of bonding, tying with a tie wire, etc., or using bolts for fixing.

[0053] Further, as Figure 1 shown, in a specific implementation manner of the corrugated dust removal filter bag provided in the embodiment of the present invention, the driving assembly includes a screw rod 51, a guide rod 52, and a motor assembly 53. The screw rod 51 and the guide rod 52 are both fixedly arranged on the side of the bag body 10 and pass through the lifting frame 40, being parallel to the axis of the bag body 10. The lifting frame 40 is in threaded cooperation with the screw rod 51, and the guide rod 52 is in sliding cooperation with the lifting frame 40; the motor assembly 53 is fixedly arranged, and the power output end is connected to the screw rod 51 to drive the screw rod 51 to rotate.

[0054] Specifically, the motor assembly 53 is an existing device and consists of a motor and a reducer. The motor assembly 53 and the guide rod 52 are both connected to the flower plate 70 of the dust collector.

[0055] It should be noted that the dust collector is usually divided into several dust removal units, and the several dust removal units perform alternate dust cleaning. Each dust removal unit includes several bag bodies 10, and the lifting frame 40 is connected to all the bag bodies 10 in one dust removal unit to reduce the number of motor assemblies 53.

[0056] Further, as Figure 1 and Figure 4 shown, in a specific implementation manner of the corrugated dust removal filter bag provided in the embodiment of the present invention, it further includes an installation snap ring 60. The installation snap ring 60 is arranged at the top of the bag body 10 and is connected to the top of the bag body 10 and the support skeleton. A card slot is arranged along the circumference on the side of the installation snap ring 60.

[0057] Specifically, the installation snap ring 60 is a rubber snap ring, which can be bent and placed into the installation hole on the flower plate 70 in the dust collector, and the flower plate 70 is stuck in the card slot to complete the fixation.

[0058] In addition, the installation snap ring 60 can also be made of rigid materials such as hard plastic and metal. At this time, the installation snap ring 60 can be fixed by bolts.

[0059] Based on the same inventive concept, the embodiment of the present invention provides a bag - type dust collector, including the above - mentioned corrugated dust removal filter bag.

[0060] The beneficial effect of the bag - type dust collector provided in the embodiment of the present invention is: compared with the prior art, the bag - type dust collector provided in the embodiment of the present invention uses the above - mentioned corrugated dust removal filter bag. During the dust cleaning operation, first, the driving assembly drives the lifting frame 40 to move, and without changing the total length of the bag body 10, the transverse wrinkles 11 are unfolded, and then reverse blowing dust cleaning is carried out, thereby effectively improving the dust cleaning effect. The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pleated dust removal filter bag, characterized in that, Comprising: A bag body, provided with a plurality of transverse wrinkles along the length direction; An elastic band, arranged on the side of the bag body and connected to the transverse wrinkles; A support framework, arranged inside the bag body, with both ends connected to both ends of the bag body for supporting the bag body; A lifting frame, arranged outside the bag body and connected to the middle of the bag body, suitable for reciprocating movement along the length direction of the bag body; A driving assembly, with the power output end connected to the lifting frame for driving the lifting frame to be suitable for reciprocating movement along the length direction of the bag body; Wherein, the driving assembly drives the lifting frame to move, and unfolds the transverse wrinkles without changing the total length of the bag body; The transverse wrinkles remain in a semi-unfolded state when not subjected to other external forces; during pulse backwashing, the driving assembly drives the lifting frame to move upward or downward, driving some of the transverse wrinkles on the bag body to unfold and some of the transverse wrinkles to be compressed, and then performing backwashing.

2. The pleated dust removal filter bag according to claim 1, characterized in that, The support framework includes a longitudinal support frame and a plurality of transverse support frames. The longitudinal support frame is arranged inside the bag body along the length direction of the bag body; the transverse support frames correspond to the transverse wrinkles one by one for supporting the transverse wrinkles, and the transverse support frames are slidably matched with the longitudinal support frame.

3. The pleated dust removal filter bag according to claim 2, wherein, The transverse support frame includes a wrinkle support ring and a connecting frame. The wrinkle support ring is arranged inside the transverse wrinkle and connected to the bag body, and the connecting frame is connected to the wrinkle support ring and is slidably matched with the longitudinal support frame.

4. The pleated dust removal filter bag according to claim 3, wherein The longitudinal support frame includes a plurality of support rods. The plurality of support rods are arranged at intervals along the circumferential direction of the bag body. The connecting frames arranged at the top and bottom of the bag body are fixedly connected to the support rods, and the other connecting frames are slidably matched with the support rods.

5. The pleated dust removal filter bag according to claim 4, wherein The connecting frame includes a limiting ring and a plurality of connecting rods. The limiting ring is slidably matched with the support rod. The plurality of connecting rods are arranged along the circumferential direction of the limiting ring, with one end connected to the limiting ring and the other end connected to the wrinkle support ring.

6. The pleated dust removal filter bag according to claim 1, characterized in that, The driving assembly includes a screw rod, a guide rod and a motor assembly. The screw rod and the guide rod are both fixedly arranged on the side of the bag body and pass through the lifting frame, parallel to the axis of the bag body. The lifting frame is in threaded cooperation with the screw rod, and the guide rod is in sliding cooperation with the lifting frame; the motor assembly is fixedly arranged, and the power output end is connected to the screw rod for driving the screw rod to rotate.

7. The pleated dust removal filter bag according to claim 2, characterized in that, It further includes a mounting snap ring. The mounting snap ring is arranged on the top of the bag body and is connected to the top of the bag body and the support framework. A card slot is arranged along the circumference on the side of the mounting snap ring.

8. A bag filter, characterized in that, Comprising the pleated dust filter bag according to any one of claims 1-7.

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