Low-resistance dust removal cage skeleton easy to clean dust and filter unit

Abstract

The utility model discloses a low-resistance easy deashing type dust removal cage skeleton, which belongs to the technical field of filter cartridges, and comprises a skeleton, a fixed part, a support structure, a fixed seat and a venturi tube, the fixed part and the fixed seat are respectively and fixedly arranged at two ends of the skeleton, the support structure is assembled at the outer end of the fixed part, and the venturi tube is fixedly arranged on the support structure. According to the low-resistance dust removal filter unit easy to clean dust, the running resistance of equipment is remarkably reduced, energy conservation and consumption reduction are achieved, filtered clean air can pass through the support structure through the design of the support structure, the circulation area is effectively enlarged, and the dust removal effect is improved. Meanwhile, the overall operation resistance of dust removal work is reduced, then the energy consumption of a fan can be reduced, in addition, through the design of the support structure and the Venturi tube, airflow distribution can be more uniform in the dust removal work, the local dust removal dead angle and the excessive dust removal phenomenon are avoided, the dust removal efficiency is optimized, and the service life of a filter bag is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter cartridge technical field, especially provide a low resistance easy ash removal formula dust cage bone and filter unit. BACKGROUND

[0002] Pulse jet dust collector is one of the most widely used equipment in modern industrial flue gas purification, and its core component is a filter unit composed of a dust filter bag and a cage bone supporting it. In the ash removal process, high-pressure pulse gas is introduced into the Venturi tube through the blowing pipe, which induces secondary airflow, amplifies air volume, and blows the airflow uniformly into the filter bag, so that the filter bag is inflated and shaken, thereby shaking off the dust layer attached to its surface.

[0003] At present, in the common dust removal filter unit, the Venturi tube is generally directly installed at the end of the cage bone, forming a whole with the cage bone. However, this Venturi tube cage bone structure has the following inherent defects and limitations:

[0004] (1) High airflow resistance and high running energy consumption. The throat passage of the traditional structure Venturi tube is the only path for pulse airflow to enter the filter bag, and the flow passage area is relatively fixed and limited. When filtering high-concentration and viscous dust, the dust layer formed on the surface of the filter bag is thick, which can cause the overall resistance of the system to increase. In order to maintain the system running at a reasonable resistance, the ash removal frequency needs to be increased or the blowing pressure needs to be improved, which directly increases the consumption of compressed air and the energy consumption of the dust removal fan, and the long-term operation cost is high.

[0005] (2) Uneven ash removal efficiency, with "local over-ash removal" and "ash removal dead angle". Since the Venturi tube is located in the cage bone, the airflow induced by it is concentrated and sprayed downward from the center of the cage bone, which can cause the upper part of the filter bag to have too strong ash removal force, while the middle and lower parts and the areas far from the center have insufficient ash removal force. This uneven ash removal can cause dust accumulation in the local area of the filter bag, increase the residual resistance, and accelerate the wear of the other part of the area due to excessive ash removal, thereby shortening the overall service life of the filter bag.

[0006] (3) Inconvenient maintenance and replacement. When a part of the Venturi tube or the cage bone is damaged, the entire filter unit usually needs to be disassembled and replaced, which increases the complexity of maintenance and the cost of spare parts.

[0007] Therefore, it is necessary to design a low-resistance easy-ash-removal dust cage bone and filter unit. INVENTION CONTENTS

[0008] To solve the above problems, the utility model provides a low-resistance easy-ash-removal dust cage bone and filter unit.

[0009] To achieve the above object, the utility model adopts the technical scheme of a low-resistance easy-to-clean dust removal cage bone, which comprises a framework, fixing pieces, a support structure, fixing bases and a Venturi tube.

[0010] Further, the framework comprises connecting ribs and a circular ring, a plurality of the connecting ribs are welded to the outer wall of the circular ring, and the two ends of the connecting ribs are respectively welded with the fixing pieces and the fixing bases.

[0011] Further, the support structure comprises an annular outer framework, connecting rods, support rods and support rings, the annular outer framework is assembled on the fixing piece, one end of the connecting rods and the support rods is fixedly installed on the inner wall of the annular outer framework, the other end of the connecting rod is fixedly installed with the support ring, the middle part of the support rod is fixedly installed on the support ring, and the other end of the support rod is fixedly installed on the one end of the large pipe diameter of the Venturi tube.

[0012] Further, the outer wall of the annular outer framework is provided with a mounting hole, and a bolt is screwed in the mounting hole, and the annular outer framework is sleeved on the fixing piece through the bolt.

[0013] A low-resistance easy-to-clean dust removal filter unit comprises a low-resistance easy-to-clean dust removal cage bone and a filter bag, the outer side of the framework is sleeved with the filter bag, and the open end of the filter bag is fixedly installed in the fixing piece.

[0014] The utility model has the advantages of reducing the equipment operation resistance, realizing energy saving and consumption reduction, enabling the filtered clean air to pass through the support structure, effectively expanding the flow area, reducing the overall operation resistance of the dust removal work, and further reducing the fan energy consumption.

[0015] The utility model reduces the equipment operation resistance, realizes energy saving and consumption reduction, enables the filtered clean air to pass through the support structure, effectively expands the flow area, reduces the overall operation resistance of the dust removal work, and further reduces the fan energy consumption.

[0016] The utility model enables the filtered clean air to pass through the support structure, effectively expands the flow area, reduces the overall operation resistance of the dust removal work, and further reduces the fan energy consumption.

[0017] The support structure and the cage bone of the utility model adopt modular design, are convenient to install and disassemble and replace, enable the maintenance operation to be more flexible and convenient, and reduce the maintenance cost. DRAWINGS

[0018] Figure 1It is a three-dimensional schematic view of the embodiment one of the utility model.

[0019] Figure 2 It is a three-dimensional schematic view of the embodiment two of the utility model.

[0020] The reference signs include:

[0021] 1, skeleton, 11, connecting rib, 12, circular ring, 2, fixing part, 3, support structure, 31, annular outer skeleton, 311, mounting hole, 32, connecting rod, 33, support rod, 34, support ring, 4, fixed seat, 5, venturi tube, 6, filter bag. Specific implementation

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Embodiment one

[0024] Refer to Figure 1 A low-resistance easy-to-clean dust removal cage bone, comprising a skeleton 1, a fixing part 2, a support structure 3, a fixed seat 4 and a venturi tube 5, the fixing part 2 and the fixed seat 4 are fixedly installed at both ends of the skeleton 1 respectively, the outer end of the fixing part 2 is assembled with the support structure 3, and the venturi tube 5 is fixedly installed on the support structure 3, the support structure 3 adopts a hollow design, and the small pipe diameter one end of the venturi tube 5 is located inside the fixing part 2.

[0025] Compared with the design that the traditional venturi tube is directly installed at the end of the cage bone, the support structure 3 can be installed independently at the outer side of the end of the skeleton 1, so that the venturi tube 5 is not located entirely in the skeleton 1, and the support structure 3 adopts a hollow design, so that the gas can pass through.

[0026] The position of the venturi tube 5 is limited, so that the small pipe diameter one end is located inside the fixing part 2, i.e. at the end of the skeleton 1. In the dust cleaning work, the high-pressure pulse airflow is guided into the inside of the skeleton 1 through the venturi tube 5, the high-pressure high-speed airflow generates negative pressure, the external air enters the skeleton through the support structure 3 to form uniform blowback airflow, and the dust cleaning work is completed comprehensively and effectively. Since the venturi tube 5 is arranged at the end of the skeleton 1, sufficient airflow can be provided to any position of the filter bag 6 to complete the dust cleaning work.

[0027] Specifically, the skeleton 1 comprises connecting ribs 11 and a circular ring 12, a plurality of connecting ribs 11 are welded to the outer wall of the circular ring 12, and the two ends of the connecting rib 11 are welded with the fixing piece 2 and the fixing seat 4 respectively.

[0028] The circular ring 12 is provided with a plurality of connecting ribs 11, which cooperate with the connecting ribs 11 to increase the strength of the skeleton 1.

[0029] Specifically, the support structure 3 comprises an annular outer skeleton 31, a connecting rod 32, a supporting rod 33 and a supporting ring 34, the annular outer skeleton 31 is assembled on the fixing piece 2, one end of the connecting rod 32 and the supporting rod 33 is fixedly installed on the inner wall of the annular outer skeleton 31, the other end of the connecting rod 32 is fixedly installed with the supporting ring 34, the middle part of the supporting rod 33 is fixedly installed on the supporting ring 34, and the other end of the supporting rod 33 is fixedly installed on one end of the large pipe diameter of the Venturi tube 5.

[0030] The connecting rod 32 fixes the Venturi tube 5, the supporting rod 33 and the supporting ring 34 increase the strength of the connecting rod 32, ensure the stability of the Venturi tube 5, and through the design of the rod and the ring, the gas circulation is not affected, and the resistance in the filtering work is reduced.

[0031] Specifically, the outer wall of the annular outer skeleton 31 is provided with a mounting hole 311, and a bolt is screwed in the mounting hole 311, and the annular outer skeleton 31 is sleeved on the fixing piece 2 through the bolt.

[0032] The fixing piece 2 can also be provided with a threaded hole, so as to realize the fixation of the support structure 3 on the fixing piece 2, and facilitate disassembly and replacement.

[0033] The internal structure of the skeleton 1 and the support structure 3 is mainly connected by resistance welding.

[0034] Example two

[0035] Reference Figure 2 A low-resistance and easy-to-clean dust removal filter unit, comprising a low-resistance and easy-to-clean dust removal cage of example one, further comprising a filter bag 6, the outer side of the skeleton 1 is sleeved with the filter bag 6, and the open end of the filter bag 6 is fixedly installed in the fixing piece 2.

[0036] The filter bag 6 can be mechanically clamped and fixed by bolts or screws, and in addition, elastic expansion rings can also be used for installation and fixation.

[0037] When the low-resistance and easy-to-clean dust removal filter unit is used for filtering, dust-containing gas flows from the outside of the filter bag 6 to the inside of the filter bag 6 under the negative pressure generated by the fan, and finally is discharged from the clean gas chamber after passing through the support structure 3 and the venturi 5. The design of the support structure 3 allows the gas to not flow out of the venturi 5 completely, but to flow out of the support structure 3 partially, thereby solving the problem that the filter bags around the venturi are difficult to clean in the traditional design, effectively expanding the flow area, reducing the equipment operation resistance, reducing the energy consumption of the fan, and achieving energy saving and consumption reduction.

[0038] When the filter bag 6 is cleaned, the high-pressure pulse airflow flows into the skeleton 1 from the venturi 5 and sprays towards the filter bag 6, thereby achieving cleaning. After the high-pressure pulse airflow enters the venturi 5, the airflow is gradually accelerated in the tapered section, and a negative pressure zone is formed around the small-diameter end of the venturi 5, which induces a large amount of airflow to flow into the support structure 3 and mix with the high-pressure pulse airflow to form a strong and uniform back-blowing airflow, thereby uniformly cleaning the filter bag 6. Through the hollow support structure 3, the effective and uniform cleaning of the full length of the filter bag 6 can be achieved with a small amount of compressed air, thereby avoiding the problems of local over-cleaning and cleaning dead angles.

[0039] The above is only a preferred embodiment of the present application, and for those skilled in the art, many changes can be made in the specific implementation and application range according to the idea of the present application, as long as these changes do not deviate from the concept of the present application, and all belong to the protection scope of the present application.

Claims

1. A low resistance and easy dust cleaning type dust cage skeleton, characterized in that: The utility model relates to a kind of venturi tubes, including skeleton, fixing piece, support structure, fixed seat and venturi tube, the fixing piece and fixed seat are respectively fixedly installed in the both ends of skeleton, the outer end of fixing piece is equipped with support structure, and venturi tube is fixedly installed on support structure, the support structure uses openwork design, and the small pipe diameter one end of venturi tube is located inside fixing piece.

2. A low resistance and easy cleaning dust cage according to claim 1, characterized in that: The skeleton includes connecting rib and circular ring, and a plurality of connecting ribs are welded to the outer wall of the circular ring, with the fixing piece and the fixed seat being welded to the two ends of the connecting rib respectively.

3. A low resistance and easy cleaning dust cage according to claim 1, characterized in that: The support structure includes annular outer skeleton, connecting rod, support rod and support ring, the annular outer skeleton is assembled on the fixing piece, one end of the connecting rod and the support rod is fixedly installed on the inner wall of the annular outer skeleton, the other end of the connecting rod is fixedly installed with the support ring, the middle part of the support rod is fixedly installed on the support ring, and the other end of the support rod is fixedly installed on the large pipe diameter one end of the venturi tube.

4. A low resistance and easy to clean dust cage according to claim 3, characterized in that: The outer wall of the annular outer skeleton is provided with a mounting hole, and a bolt is screwed in the mounting hole, and the annular outer skeleton is sleeved on the fixing piece through the bolt.

5. A low resistance, easy-to-clean dust filtration unit comprising a low resistance, easy-to-clean dust cage according to any one of claims 1 to 4, characterized in that: It also includes a filter bag, the outer side of the skeleton is sleeved with a filter bag, and the open end of the filter bag is fixedly installed in the fixing piece.

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