Dust cleaning device of bag-type dust collector

Abstract

The utility model relates to the technical field of dust removal equipment, and particularly discloses a dust removal device of a bag-type dust remover. A support frame is fixed on the inner wall of a box body of the bag-type dust remover; the cage-shaped filter bag support comprises a bottom ring connected to the support frame, a top ring, a plurality of middle rings arranged between the top ring and the bottom ring in parallel and vertical rods, the vertical rods are respectively fixed between the bottom ring and the middle ring at the bottom, between two adjacent middle rings and between the middle ring at the top and the top ring, and sleeve holes are formed in the middle rings; the cage-shaped blowback mechanism comprises a plurality of annular pipes arranged among the bottom ring, the middle rings and the middle rings in parallel, the annular pipes are sleeved with sleeves connected with the vertical rods in a sliding and sleeving mode, a plurality of strip-shaped air outlet holes are formed in the peripheral walls of the annular pipes in the circumferential direction, and vertical pipes matched with the sleeve holes in a sliding and sleeving mode are connected between every two adjacent annular pipes in a sleeving mode; the annular pipe at the bottom is connected to the air outlet end of the air pump through a pipeline; the lifting cylinder is used for driving the cage-shaped blowback mechanism to reciprocate up and down; therefore, dust attached to the outer wall of the filter bag can be efficiently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a dust cleaning device for a bag filter. Background Technique

[0002] A bag filter is a dry dust filtering device, which is suitable for collecting fine, dry and non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt. The dust-containing gas is filtered by the filtering action of the fibrous fabric. When the dust-containing gas enters the bag filter, 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 bag, the dust is retained outside the filter bag, so that the gas is purified.

[0003] After the bag dust removal device is used for a long time, the dust intercepted on the outer wall of the filter bag increases, which will gradually reduce the air permeability of the filter bag, thereby reducing the filtering efficiency of the bag dust removal device. Therefore, after the bag dust removal device is used for a period of time, the filter bag needs to be cleaned. At present, a scraping type dust cleaning device is often used to clean the filter bag. Through the movement of the scraper, the dust attached to the outside of the dust removal bag can be cleaned, so as to ensure the filtering effect of the bag.

[0004] However, the scraping effect of the dust cleaning device on the dust attached to the filter bag is not ideal, and the structure of the dust cleaning device is complex and not easy to apply. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust cleaning device for a bag filter, which is used to solve the problem that it is not easy to efficiently clean the dust attached to the outer wall of the filter bag during the use of the current bag dust removal device.

[0006] To achieve the above object, the present utility model provides the following technical solutions: a dust cleaning device for a bag filter, wherein both ends of the support frame are respectively fixedly connected to the inner wall of the bag filter box body; the cage-shaped filter bag support includes a bottom ring fixedly connected to the support frame, a top ring arranged parallel above the bottom ring, a plurality of middle rings arranged parallel between the bottom ring and the top ring, and a plurality of vertical rods, and the vertical rods are respectively fixed between the bottom ring and the middle ring at the bottom, between two adjacent middle rings, and between the middle ring at the top and the top ring, and the middle ring is provided with a sleeve hole extending vertically; the cage-shaped reverse blowing mechanism includes a plurality of annular tubes arranged parallel between the bottom ring and the middle ring at the bottom, between two adjacent middle rings, and between the middle ring at the top and the top ring, a sleeve is sleeved on the annular tube and is slidably sleeved and matched with the vertical rod, a plurality of strip-shaped air outlet holes are arranged on the outer peripheral wall of the annular tube along the circumferential direction, a vertical tube slidably sleeved and matched with the sleeve hole is sleeved between two adjacent annular tubes, and the annular tube at the bottom is connected to the air outlet end of an air pump through a pipeline; the lifting cylinder is used to drive the cage-shaped reverse blowing mechanism to reciprocate up and down.

[0007] Preferably, the support frame is a rectangular frame structure, and a connecting block is fixedly connected between the outer peripheral wall of the bottom ring and the inner side wall of the support frame.

[0008] Preferably, a fixed sleeve is arranged in the middle of the inner cavity of the bottom ring, a plurality of connecting rods are fixed between the outer peripheral wall of the fixed sleeve and the inner peripheral wall of the bottom ring, and the top end of the piston cylinder of the lifting cylinder is fixedly sleeved in the fixed sleeve.

[0009] Preferably, a cylinder body is arranged below the center of the annular tube at the bottom, a connecting pipe is fixedly arranged between the cylinder body and the annular tube at the bottom along the radial direction, and an air inlet interface is arranged on the side wall of the bottom end of the cylinder body.

[0010] Preferably, the top end of the vertical tube is inserted into the bottom surface of the annular tube above it, and the bottom end of the vertical tube is inserted into the top surface of the annular tube below it.

[0011] Preferably, two groups of the strip-shaped air outlet holes are arranged on the outer peripheral wall of the annular tube along the vertical direction, the strip-shaped air outlet holes in each group are evenly distributed along the circumferential direction, and the upper and lower strip-shaped air outlet holes are arranged staggeredly.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] When the dust cleaning device of the bag filter involved in the present utility model is in use, the cage-shaped backwashing mechanism is driven by a lifting cylinder to reciprocate up and down relative to the cage-shaped filter bag support. The airflow ejected from the strip-shaped air outlet can fully backwash the filter bag, so as to facilitate the efficient cleaning of the dust attached to the outside of the filter bag. In addition, the backwashing range of the strip-shaped air outlet is a ring-shaped thin strip, and its backwashing process will not have a great impact on the normal filter bag dust removal project. Therefore, the dust cleaning operation can be carried out during the normal dust removal operation of the bag filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present utility model;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the cage-shaped filter bag support of the present utility model;

[0016] Figure 3 is a three-dimensional structural schematic diagram of the cage-shaped backwashing mechanism of the present utility model.

[0017] In the figure: 1 - support frame;

[0018] 2 - cage-shaped filter bag support; 2.1 - bottom ring; 2.2 - connecting block; 2.3 - middle ring; 2.3.1 - sleeve hole; 2.4 - top ring; 2.5 - vertical rod; 2.6 - fixed sleeve; 2.7 - connecting rod;

[0019] 3 - cage-shaped backwashing mechanism; 3.1 - annular pipe; 3.1.1 - strip-shaped air outlet; 3.2 - vertical pipe; 3.3 - sleeve; 3.4 - cylinder body; 3.5 - connecting pipe; 3.6 - air inlet interface;

[0020] 4 - lifting cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-3 , the present utility model provides a technical solution: a dust cleaning device for a bag filter, and both ends of the support frame 1 are respectively fixedly connected to the inner walls of the bag filter box body; wherein, the support frame 1 is a rectangular frame structure, and both ends of the support frame 1 are fixed to the inner walls of the bag filter box body by bolts.

[0023] The cage-shaped filter bag support 2 includes a bottom ring 2.1, a top ring 2.4 arranged parallel above the bottom ring 2.1, a plurality of middle rings 2.3 arranged parallel between the bottom ring 2.1 and the top ring 2.4, and a plurality of vertical rods 2.5. The vertical rods 2.5 are respectively fixed between the bottom ring 2.1 and the middle ring 2.3 at the bottom, between two adjacent middle rings 2.3, and between the middle ring 2.3 at the top and the top ring 2.4. A sleeve hole 2.3.1 extending vertically is provided on the middle ring 2.3. Among them, a connecting block 2.2 is fixedly connected between the outer peripheral wall of the bottom ring 2.1 and the inner side wall of the support frame 1. A fixing sleeve 2.6 is provided in the middle of the inner cavity of the bottom ring 2.1, and a plurality of connecting rods 2.7 are fixed between the outer peripheral wall of the fixing sleeve 2.6 and the inner peripheral wall of the bottom ring 2.1. That is, the filter bag fixing sleeve is sleeved outside the cage-shaped filter bag support 2.

[0024] The cage-shaped backwashing mechanism 3 includes a plurality of annular tubes 3.1 arranged parallel between the bottom ring 2.1 and the middle ring 2.3 at the bottom, between two adjacent middle rings 2.3, and between the middle ring 2.3 at the top and the top ring 2.4. A sleeve 3.3 that is slidably sleeved and matched with the vertical rod 2.5 is sleeved on the annular tube 3.1. A plurality of strip-shaped air outlet holes 3.1.1 are provided on the outer peripheral wall of the annular tube 3.1 along the circumferential direction. A vertical tube 3.2 that is slidably sleeved and matched with the sleeve hole 2.3.1 is sleeved between two adjacent annular tubes 3.1. The annular tube 3.1 at the bottom is connected to the air outlet end of the air pump through a pipeline. Among them, a cylinder body 3.4 is provided below the center of the annular tube 3.1 at the bottom. A connecting pipe 3.5 is fixedly arranged radially between the cylinder body 3.4 and the annular tube 3.1 at the bottom. An air inlet interface 3.6 is provided on the side wall at the bottom end of the cylinder body 3.4. The air inlet interface 3.6 is connected to the air outlet end of the air pump through a pipeline. The top end of the vertical tube 3.2 is inserted into the bottom surface of the annular tube 3.1 above it, and the bottom end of the vertical tube 3.2 is inserted into the top surface of the annular tube 3.1 below it.

[0025] The top end of the piston cylinder of the lifting cylinder 4 is fixedly sleeved in the fixing sleeve 2.6, and the top end of the piston rod of the lifting cylinder 4 is fixedly connected to the bottom end of the cylinder body 3.4. That is, the lifting cylinder 4 is used to drive the cage-shaped backwashing mechanism 3 to reciprocate up and down.

[0026] In summary, when the bag filter performs the dust removal operation, dust gradually accumulates and adheres to the outer wall of the filter bag. The telescopic movement of the piston rod of the lifting cylinder 4 will drive the cage-shaped backwashing mechanism 3 to reciprocate up and down relative to the cage-shaped filter bag support 2. That is, the annular tube 3.1 moves up and down between the bottom ring 2.1 and the middle ring 2.3 at the bottom, between two adjacent middle rings 2.3, or between the middle ring 2.3 at the top and the top ring 2.4. During this period, the sleeve 3.3 slides up and down along the vertical rod 2.5, and the vertical tube 3.2 slides up and down along the sleeve hole 2.3.1.

[0027] The air pump supplies high-pressure air into the cylinder body 3.4 through a pipeline via the air inlet interface 3.6. The high-pressure air enters the annular pipe 3.1 at the bottom along the connecting pipe 3.5, and then sequentially enters the annular pipe 3.1 above through the vertical pipe 3.2. The high-pressure air in the annular pipe 3.1 finally jets out from the strip-shaped air holes 3.1.1 to realize the backwashing operation of the filter bag, so as to blow off the dust accumulated on the outer wall of the filter bag and ensure the normal dust removal performance of the filter bag.

[0028] In order to enable the airflow jetted from the strip-shaped air holes 3.1.1 to fully cover the filter bag, two groups of strip-shaped air holes 3.1.1 are arranged vertically on the outer peripheral wall of the annular pipe 3.1. The strip-shaped air holes 3.1.1 in each group are evenly distributed in the circumferential direction, and the upper and lower strip-shaped air holes 3.1.1 are arranged staggeredly.

[0029] It should be noted that in this article, 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 term "comprising", "including" or any other variant thereof is 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 also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Pulse jet fabric filter dust cleaning device, characterized in that, Comprising: A support frame (1), both ends of the support frame (1) are fixedly connected to the inner wall of the bag filter housing; A cage-shaped filter bag support (2), the cage-shaped filter bag support (2) includes a bottom ring (2.1) fixedly connected to the support frame (1), a top ring (2.4) parallel to the upper part of the bottom ring (2.1), a plurality of middle rings (2.3) parallel between the bottom ring (2.1) and the top ring (2.4), and a plurality of vertical rods (2.5). The vertical rods (2.5) are respectively fixed between the bottom ring (2.1) and the bottom middle ring (2.3), between two adjacent middle rings (2.3), and between the top middle ring (2.3) and the top ring (2.4). A sleeve hole (2.3.1) extending vertically is provided on the middle ring (2.3); A cage-shaped backwashing mechanism (3), the cage-shaped backwashing mechanism (3) includes a plurality of annular tubes (3.1) parallel between the bottom ring (2.1) and the bottom middle ring (2.3), between two adjacent middle rings (2.3), and between the top middle ring (2.3) and the top ring (2.4). A sleeve (3.3) slidably sleeved with the vertical rod (2.5) is sleeved on the annular tube (3.1). A plurality of strip-shaped air outlet holes (3.1.1) are provided on the outer peripheral wall of the annular tube (3.1) along the circumferential direction. A vertical tube (3.2) slidably sleeved with the sleeve hole (2.3.1) is sleeved between two adjacent annular tubes (3.1). The bottom annular tube (3.1) is connected to the air outlet end of an air pump through a pipeline; A lifting cylinder (4), the lifting cylinder (4) is used to drive the cage-shaped backwashing mechanism (3) to reciprocate up and down.

2. The dust cleaning device of the bag filter according to claim 1, wherein: The support frame (1) is of a rectangular frame structure, and a connecting block (2.2) is fixedly connected between the outer peripheral wall of the bottom ring (2.1) and the inner side wall of the support frame (1).

3. The bag filter dust cleaning device according to claim 1, characterized in that: A fixed sleeve (2.6) is provided in the middle of the inner cavity of the bottom ring (2.1). A plurality of connecting rods (2.7) are fixed between the outer peripheral wall of the fixed sleeve (2.6) and the inner peripheral wall of the bottom ring (2.1). The top end of the piston cylinder of the lifting cylinder (4) is fixedly sleeved in the fixed sleeve (2.6).

4. The dust cleaning device of the bag filter according to claim 1, wherein: A cylinder body (3.4) is provided below the center of the bottom annular tube (3.1). A connecting pipe (3.5) is fixed between the cylinder body (3.4) and the bottom annular tube (3.1) along the radial direction. An air inlet interface (3.6) is provided on the side wall of the bottom end of the cylinder body (3.4).

5. The dust cleaning device of the bag filter according to claim 1, wherein: The top end of the vertical tube (3.2) is inserted into the bottom surface of the annular tube (3.1) above it, and the bottom end of the vertical tube (3.2) is inserted into the top surface of the annular tube (3.1) below it.

6. The pulse-jet baghouse dust collector cleaning device according to claim 1, wherein: Two groups of the strip-shaped air outlet holes (3.1.1) are provided on the outer peripheral wall of the annular tube (3.1) along the vertical direction. The strip-shaped air outlet holes (3.1.1) in each group are evenly distributed along the circumferential direction, and the upper and lower strip-shaped air outlet holes (3.1.1) are arranged staggeredly.

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