Wrinkle type dust removal filter bag and cloth bag type dust remover

Abstract

The invention provides a fold type dust removal filter bag and a cloth bag type deduster, the fold type dust removal filter bag comprises a bag body, an elastic belt, a support skeleton, a lifting frame and a driving assembly, and the bag body is provided with a plurality of transverse folds along the length direction; the elastic band is arranged on the side surface of the bag body and connected with the transverse folds; the supporting framework is arranged in the bag body, and two ends of the supporting framework are connected with two ends of the bag body for supporting the bag body; the lifting frame is connected with the middle of the bag body and suitable for reciprocating in the length direction of the bag body. The power output end of the driving assembly is connected with the lifting frame and used for driving the lifting frame to reciprocate in the length direction of the bag body. The cloth bag type dust collector comprises the fold type dust collection filter bag. According to the wrinkle type dust removal filter bag and the cloth bag type dust remover provided by the invention, when the dust removal operation is carried out, the lifting frame is firstly driven to move through the driving assembly, the transverse folds are unfolded under the condition that the total length of the bag body is not changed, and then back flushing dust removal is carried out, so that the dust removal effect is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a pleated dust filter bag and a bag-type dust collector. Background Art

[0002] The bag filter is a dry dust filter. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter the dust-containing gas. When the dust-containing gas enters the bag filter, the large particles and heavy dust settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0003] In order to further increase the filtration area, pleated bags are usually used. Pleated bags are also called pleated bags, pleated filter bags or star bags. Pleated bags are filter bags with pleated filter surfaces. The filter material of the pleated filter bag is folded and sewn, which increases the filtration area of ​​the original traditional round filter bag to 1.5-1.8 times the original.

[0004] Bag-type dust collectors usually use pulse back-blowing to clean the filter bags. Due to the complex pleated structure of the pleated bags, it is difficult for the gas to penetrate evenly into each pleat during the back-blowing process, resulting in incomplete cleaning of the pleats of the bags. This will not only cause the residual dust to gradually accumulate in the pleats, increase the running resistance of the bags, and reduce the dust removal efficiency, but also, over time, the air permeability of the bags will deteriorate due to excessive dust accumulation, shortening the service life of the bags. Summary of the invention The present invention provides a pleated dust filter bag and a bag-type dust collector, aiming to solve the technical problems raised in the above background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: In a first aspect, an embodiment of the present invention provides a pleated dust filter bag, comprising: The bag body is provided with a plurality of transverse folds along the length direction; An elastic band, arranged on the side of the bag body and connected to the transverse folds; A supporting frame is arranged in the bag body, with two ends connected to two ends of the bag body, and is used to support the bag body; A lifting frame connected to the middle of the bag body and adapted to reciprocate along the length direction of the bag body; A driving component, whose power output end is connected to the lifting frame, is used to drive the lifting frame to move back and forth along the length direction of the bag body.

[0006] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, the support skeleton includes a longitudinal support frame and a plurality of transverse support frames, and the longitudinal support frame is arranged in the bag body along the length direction of the bag body; the transverse support frame corresponds one-to-one to the transverse folds and is used to support the transverse folds, and the transverse support frame slides with the longitudinal support frame.

[0007] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, the transverse support frame includes a pleated support ring and a connecting frame, the pleated support ring is arranged on the inner side of the transverse pleats and connected to the bag body, the connecting frame is connected to the pleated support ring and slidably cooperates with the longitudinal support frame.

[0008] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, the longitudinal support frame includes a plurality of support rods, and the plurality of support rods are arranged at intervals along the circumference 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.

[0009] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, the connecting frame includes a limiting ring and a plurality of connecting rods, the limiting ring slidingly cooperates with the support rod, and the plurality of connecting rods are arranged along the circumference of the limiting ring, one end of which is connected to the limiting ring, and the other end of which is connected to the pleated support ring.

[0010] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, the lifting frame is arranged on the outside of the bag body and connected to the middle part of the bag body.

[0011] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, the driving assembly includes a screw, a guide rod and a motor assembly, the screw and the guide rod are both fixed to the side of the bag body and pass through the lifting frame, parallel to the axis of the bag body, the lifting frame is threadedly matched with the screw, and the guide rod is slidingly matched with the lifting frame; the motor assembly is fixedly arranged, and the power output end is connected to the screw to drive the screw to rotate.

[0012] In combination with the first aspect, in a possible implementation of the pleated dust filter bag provided by the present invention, it also includes an installation snap ring, which is arranged on the top of the bag body and connected to the top of the bag body and the supporting frame, and a snap groove is arranged along the side of the installation snap ring.

[0013] In a second aspect, an embodiment of the present invention provides a bag-type dust collector, comprising the above-mentioned pleated dust filter bag.

[0014] The beneficial effects of the pleated dust filter bag provided by the present invention are as follows: compared with the prior art, the pleated dust filter bag provided by the present invention has a bag body provided with a plurality of transverse pleats, and elastic bands are arranged on the sides to connect the transverse pleats, so that the transverse pleats are kept in a semi-expanded state, so as to achieve the effect of increasing the filtering area; during pulse backblowing, the driving component is first used to drive the lifting frame to move upward or downward, driving some of the transverse pleats on the bag body to expand and some of the transverse pleats to compress, and then backblowing is performed; thereafter, the driving component is used to drive the lifting frame to move in the opposite direction, driving the previously compressed transverse pleats to expand and compress the previously expanded transverse pleats, and then backblowing is performed again, and the lifting frame is driven to reset, thereby completing the pulse cleaning operation of the bag body; that is, the pleated dust filter bag provided by the present invention firstly drives the lifting frame to move by the driving component, and without changing the total length of the bag body, the transverse pleats are expanded, and then backblowing cleaning is performed, thereby effectively improving the cleaning effect.

[0015] The beneficial effect of the bag-type dust collector provided by the present invention is: compared with the prior art, the bag-type dust collector provided by the present invention uses the above-mentioned pleated dust filter bag. When performing cleaning operations, the lifting frame is first driven to move by the driving component, and the transverse pleats are unfolded without changing the total length of the bag body, and then back-blowing cleaning is performed, thereby effectively improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a partial structure of a bag-type dust collector provided in an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a bag body and a supporting frame in a pleated dust filter bag provided in an embodiment of the present invention; Figure 3 A schematic cross-sectional view of a bag body and a supporting frame in a pleated dust filter bag provided in an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of part A in FIG. Figure 5 A schematic diagram of the three-dimensional structure of a support frame in a pleated dust filter bag provided in an embodiment of the present invention; Description of reference numerals: 10. Bag body; 11. Horizontal folds; 20. Elastic band; 31. Pleated support ring; 32. Limiting ring; 33. Connecting rod; 34. Support rod; 40. Lifting frame; 51. Screw rod; 52. Guide rod; 53. Motor assembly; 60. Mounting retaining ring; 70. Flower plate. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that the terms used herein are only for describing specific embodiments 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0021] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0024] Please also read Figures 1 to 5 , the pleated dust filter bag provided by the present invention is now described. The pleated dust filter bag comprises 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 provided on the side of the bag body 10 and connected to the transverse pleats 11; the support frame is provided in the bag body 10, and its two ends are connected to the two ends of the bag body 10, so as 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, which can be specifically connected by a snap connection or a bolt connection; the lifting frame 40 is connected to the middle part of the bag body 10, and is suitable for reciprocating movement along the length direction of the bag body 10; the power output end of the driving assembly is connected to the lifting frame 40, and is used 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 provided on it, and the bag body 10 extends from the mounting holes into the lower side of the flower plate 70.

[0025] 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 subject to other external forces, so as to achieve the effect of increasing the filtering area; during pulse backwashing, the lifting frame 40 is first driven upward or downward by the driving component, driving part of the transverse folds 11 on the bag body 10 to expand and part of the transverse folds 11 to compress, and then backwashing is performed; thereafter, the lifting frame 40 is driven to move in the opposite direction by the driving component, driving the previously compressed transverse folds 11 to expand and compress the previously expanded transverse folds 11, and then backwashing is performed again, and the lifting frame 40 is driven to reset, completing the pulse cleaning operation of the bag body 10. In this way, the transverse folds 11 of the bag body 10 can be expanded without changing the total length of the bag body 10, and there is no need to increase the longitudinal installation space.

[0026] Specifically, the lifting frame 40 is first driven downward by the driving component to expand the transverse folds 11 above the lifting frame 40 and compress the transverse folds 11 below the lifting frame 40, and then backblowing is performed. 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; thereafter, the lifting frame 40 is driven upward by the driving component to compress the transverse folds 11 above the lifting frame 40 and expand the transverse folds 11 below the lifting frame 40, and then backblowing is performed 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 dust cleaning effect of the bag body 10 as a whole.

[0027] The elastic band 20 is an elastic rope or belt, and has sufficient expansion and contraction to adapt to the change in the local length of the bag body 10 when the local transverse folds 11 are unfolded.

[0028] The beneficial effect of the pleated dust filter bag provided by the embodiment of the present invention is: 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, and unfolds the transverse pleats 11 without changing the total length of the bag body 10, and then back-blowing for cleaning, thereby effectively improving the cleaning effect.

[0029] like Figure 4 and Figure 5 As shown, in a specific implementation of the pleated dust filter bag provided in an embodiment of the present invention, the support skeleton includes a longitudinal support frame and a plurality of transverse support frames, and 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 one-to-one to the transverse folds 11, and are used to support the transverse folds 11 to prevent the transverse folds 11 from deforming, and the transverse support frames slide in cooperation with the longitudinal support frames.

[0030] Specifically, Figure 4 and Figure 5As shown, in a specific implementation of the pleated dust filter bag provided in an embodiment of the present invention, the transverse support frame includes a pleated support ring 31 and a connecting frame, the pleated support ring 31 is arranged on the inner side of the transverse pleats 11 and connected to the bag body 10, the connecting frame is connected to the pleated support ring 31, and slides with the longitudinal support frame.

[0031] It should be noted that the pleat support ring 31 is a ring body with a certain rigidity such as a metal ring or a plastic ring, which can effectively support the large diameter of the transverse pleats 11 and is connected to the bag body 10 by bonding, sewing, etc.

[0032] like Figure 2 and Figure 5 As shown, in a specific implementation of the pleated dust filter bag provided in an embodiment of the present invention, the longitudinal support frame includes a plurality of support rods 34, and the plurality of support rods 34 are arranged at intervals along the circumference 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 the other connecting frames are slidably matched with the support rods 34.

[0033] Specifically, the number of support rods 34 is two or more. In the present embodiment, the number of support rods 34 is four. Both 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 a relatively fixed position.

[0034] like Figure 4 and Figure 5 As shown, in a specific implementation of the pleated dust filter bag provided in an embodiment of the present invention, the connecting frame includes a limiting ring 32 and a plurality of connecting rods 33, the limiting ring is slidably matched with the support rod 34, and the plurality of connecting rods 33 are circumferentially arranged along the limiting ring 32, one end of which is connected to the limiting ring 32, and the other end of which is connected to the pleated support ring 31.

[0035] It should be noted that the support rod 34 passes through the limiting ring 32 and slides with the limiting ring 32 to limit the movement direction of the transverse support frame composed of the pleat support ring 31, the connecting rod 33 and the limiting ring 32 to prevent the bag body 10 from twisting or skewing, and 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.

[0036] like Figure 1 As shown, in a specific implementation of the pleated dust filter bag provided in an embodiment of the present invention, the lifting frame 40 is arranged on the outside of the bag body 10 and connected to the middle part of the bag body 10.

[0037] It should be noted that the lifting frame 40 is directly connected to the elastic band 20, and then indirectly connected to the bag body 10, so as to avoid damaging the bag body 10 at the connection. Specifically, the lifting frame 40 and the elastic band 20 are fixedly connected together by bonding, binding with wire or the like, or fixing with bolts.

[0038] Further, such as Figure 1 As shown, in a specific implementation manner of the pleated dust filter bag provided in an embodiment of the present invention, the driving assembly includes a screw 51, a guide rod 52 and a motor assembly 53. The screw 51 and the guide rod 52 are both fixedly mounted on the side of the bag body 10 and pass through the lifting frame 40, parallel to the axis of the bag body 10, the lifting frame 40 is threadedly matched with the screw 51, and the guide rod 52 is slidingly matched with the lifting frame 40; the motor assembly 53 is fixedly arranged, and the power output end is connected to the screw 51, so as to drive the screw 51 to rotate.

[0039] Specifically, the motor assembly 53 is an existing device, which is composed 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.

[0040] It should be noted that the dust collector is usually divided into several dust removal units, and the dust removal units are cleaned alternately. Each dust removal unit includes several bag bodies 10, and the lifting frame 40 is connected to all the bag bodies 10 in a dust removal unit to reduce the number of motor components 53.

[0041] Further, such as Figure 1 and Figure 4 As shown, in a specific implementation of the pleated dust filter bag provided in an embodiment of the present invention, it also includes an installation snap ring 60, which is arranged on the top of the bag body 10, connected to the top of the bag body 10 and the supporting frame, and a snap groove is arranged along the side of the installation snap ring 60.

[0042] Specifically, the mounting clamp 60 is a rubber clamp, which can be bent and placed into the mounting hole on the flower plate 70 in the dust collector, and the flower plate 70 is clamped in the clamping groove to complete the fixation.

[0043] In addition, the mounting clamp ring 60 may also be made of a rigid material such as hard plastic, metal, etc. In this case, the mounting clamp ring 60 may be fixed by bolts.

[0044] Based on the same inventive concept, an embodiment of the present invention provides a bag-type dust collector, including the above-mentioned pleated dust filter bag.

[0045] The bag-type dust collector provided by the embodiment of the present invention has the following beneficial effects: compared with the prior art, the bag-type dust collector provided by the embodiment of the present invention uses the above-mentioned pleated dust filter bag. When performing dust cleaning operations, the lifting frame 40 is first driven to move by the driving assembly, and the transverse pleats 11 are unfolded without changing the total length of the bag body 10, and then back-blowing is performed for dust cleaning, thereby effectively improving the dust cleaning effect. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pleated dust filter bag, characterized in that: include: The bag body is provided with a plurality of transverse folds along the length direction; An elastic band, arranged on the side of the bag body and connected to the transverse folds; A supporting frame is arranged in the bag body, with two ends connected to two ends of the bag body, and is used to support the bag body; A lifting frame connected to the middle of the bag body and adapted to reciprocate along the length direction of the bag body; A driving component, whose power output end is connected to the lifting frame, is used to drive the lifting frame to move back and forth along the length direction of the bag body.

2. The pleated dust filter bag according to claim 1, characterized in that: The support frame includes a longitudinal support frame and a plurality of transverse support frames, wherein the longitudinal support frame is arranged inside the bag body along the length direction of the bag body; the transverse support frames correspond one-to-one with the transverse folds and are used to support the transverse folds, and the transverse support frames are slidably matched with the longitudinal support frames.

3. The pleated dust filter bag according to claim 2, characterized in that: The transverse support frame includes a pleat support ring and a connecting frame. The pleat support ring is arranged on the inner side of the transverse pleats and connected to the bag body. The connecting frame is connected to the pleat support ring and slidably cooperates with the longitudinal support frame.

4. The pleated dust filter bag according to claim 3, characterized in that: The longitudinal support frame includes a plurality of support rods, which are arranged at intervals along the circumference 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 filter bag according to claim 4, characterized in that: 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 circumference of the limiting ring, one end of which is connected to the limiting ring and the other end of which is connected to the pleated support ring.

6. The pleated dust filter bag according to claim 1, characterized in that: The lifting frame is arranged outside the bag body and connected to the middle part of the bag body.

7. The pleated dust filter bag according to claim 6, characterized in that: The driving assembly includes a screw, a guide rod and a motor assembly. The screw and the guide rod are fixedly mounted on the side of the bag body and pass through the lifting frame, and are parallel to the axis of the bag body. The lifting frame is threadedly matched with the screw, and the guide rod is slidingly matched with the lifting frame. The motor assembly is fixedly arranged, and the power output end is connected to the screw to drive the screw to rotate.

8. The pleated dust filter bag according to claim 2, characterized in that: It also includes a mounting snap ring, which is arranged on the top of the bag body and connected to the top of the bag body and the supporting frame, and a snap groove is arranged around the side surface of the mounting snap ring.

9. A bag-type dust collector, characterized in that: It comprises a pleated dust filter bag as described in any one of claims 1 to 8.

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