Wrinkle type bag-type dust collector structure

Abstract

The utility model discloses a pleated bag-type dust collector structure, which relates to the technical field of bag-type dust collectors and comprises a middle box body, an upper box body is arranged at the top of the middle box body, an ash hopper is arranged at the bottom of the middle box body and communicated with the middle box body, an air inlet pipe is arranged on one side of the ash hopper, and an air outlet pipe is arranged on the other side of the ash hopper. A tubesheet is arranged at the top of the middle box body, a plurality of mounting holes distributed at equal intervals are formed in the surface of the tubesheet, and bag-type dust removers are arranged on the inner walls of the mounting holes; the bag-type dust collector comprises a bag fixing frame and a filter bag, the bag fixing frame is sleeved with the filter bag, the surface of the filter bag is of a corrugated structure, and a dust cleaning mechanism is arranged in the upper box body and used for cleaning dust of the bag-type dust collector. According to the wrinkle type filter bag, the density, the depth and the width of the wrinkles can be adjusted according to different working condition requirements, so that the dust removal effect is met, and the dust removal efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a pleated bag filter structure. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When the dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle down due to gravity and fall into the ash hopper. The gas containing finer dust particles is purified as it passes through the filter media, as the dust is trapped.

[0003] A search revealed Chinese Patent Publication No. CN221618866U, which discloses a baghouse dust collector, including a frame and an outer shell assembly, as well as an air inlet, a power component, a dust filter assembly, and a dust shaking component. The air inlet is fixedly installed on the outer wall of the outer shell assembly, the power component is installed inside the air inlet, the dust filter assembly is rotatably installed inside the outer shell assembly, the power component and the dust filter assembly are connected and can drive the dust filter assembly to rotate, and the dust shaking component is fixedly installed inside the outer shell assembly. The outer shell assembly includes a housing and a support ring, the housing is fixedly installed on the top of the frame, and the support ring is fixedly installed on the inner wall of the housing. The dust filter assembly includes a rotating plate and several filter bags.

[0004] Existing technologies similar to the baghouse dust collectors mentioned above use flat-plate bags. Flat-plate bags have a small filtration area, resulting in low dust removal efficiency, and therefore have room for improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pleated bag filter structure. Its advantage lies in the fact that the density, depth, and width of the pleats in the pleated filter bag can be adjusted according to different operating conditions to meet dust removal requirements, significantly improving dust removal efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pleated bag filter structure includes a middle box, an upper box at the top of the middle box, a dust hopper at the bottom of the middle box, the dust hopper being connected to the middle box, an air inlet pipe on one side of the dust hopper, a tube sheet at the top of the middle box, and a plurality of equally spaced mounting holes on the surface of the tube sheet, with bag filters installed on the inner wall of the mounting holes.

[0008] The bag filter includes a bag holder and a filter bag. The filter bag is fitted onto the bag holder and has a pleated surface. The upper housing is equipped with a cleaning mechanism for cleaning the bag filter.

[0009] The above technical solution works as follows: Dust-laden gas enters the middle chamber through the inlet duct and ash hopper. Filter bags are installed inside the middle chamber. After filtration by the filter bags, dust is trapped on the outside of the filter bags, and the purified gas enters the filter bags and is then discharged through the upper chamber. The pleated filter bags are formed by creating a series of uniform pleats on the surface of the bag. Compared to flat ordinary filter bags, the filtration area of ​​pleated filter bags is nearly twice that of ordinary filter bags of the same size. At the same time, the density, depth, and width of the pleats in pleated filter bags can be adjusted according to different working conditions to meet the dust removal requirements, significantly improving the dust removal efficiency.

[0010] The present invention is further configured such that the dust removal mechanism includes an air chamber, and a plurality of equally spaced blow pipes are provided at the bottom of the air chamber, with the blow nozzles of the blow pipes facing the center of the filter bag.

[0011] The present invention is further configured such that an air inlet is provided at the top of the air bag, and an electromagnetic pulse valve is provided on the inner wall of the air inlet.

[0012] The present invention is further configured such that an exhaust fan is provided on one side of the upper housing, the input end of the exhaust fan is connected to the upper housing, and the output end of the exhaust fan is provided with a smoke exhaust pipe.

[0013] The present invention is further configured such that guide blocks are provided on both sides of the bottom inner wall of the middle box, and the top of the guide blocks has an arc surface structure.

[0014] The present invention is further configured such that the top inner wall of the middle box is provided with a number of equally spaced partitions, and the partitions are arranged alternately with the bag filter.

[0015] The present invention is further configured such that the upper box is divided into three compartments, and each of the three compartments is provided with an inspection door on its surface.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The structure of this pleated baghouse dust collector involves dust-laden gas entering the middle chamber through the inlet pipe and ash hopper. Filter bags are installed inside the middle chamber. After filtration by the filter bags, dust is trapped on the outside of the bags, and the purified gas enters the filter bags again before being discharged through the upper chamber. The pleated filter bags are formed by a series of uniform pleats on their surface. Compared to flat ordinary filter bags, the filtration area of ​​the pleated filter bags is nearly twice that of ordinary filter bags of the same size. Furthermore, the density, depth, and width of the pleats can be adjusted according to different operating conditions to meet dust removal requirements, significantly improving dust removal efficiency.

[0018] 2. The structure of this pleated bag filter allows the electromagnetic pulse valve to be opened according to the set program during dust removal. Compressed gas passes through the electromagnetic pulse valve in a very short time and is induced by the nozzle on the blowpipe to enter the filter bag with several times the amount of air injected, forming an air wave. This causes the filter bag to expand rapidly from the bag opening to the bottom and vibrate violently, resulting in a strong dust removal effect and shaking off the dust on the filter bag. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a pleated bag dust collector proposed in this utility model.

[0020] Figure 2 This is a cross-sectional structural diagram of a pleated bag filter structure proposed in this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the filter bag of a pleated baghouse dust collector proposed in this utility model.

[0022] In the diagram: 1. Ash hopper; 2. Middle chamber; 3. Upper chamber; 4. Tube plate; 6. Filter bag; 7. Air inlet pipe; 8. Guide block; 9. Air tank; 12. Pulse jet pipe; 13. Electromagnetic pulse valve. Detailed Implementation

[0023] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0024] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0025] Reference Figure 1-3A pleated bag filter structure includes a middle box 2, an upper box 3 at the top of the middle box 2, a dust hopper 1 at the bottom of the middle box 2, the dust hopper 1 being connected to the middle box 2, an air inlet pipe 7 on one side of the dust hopper 1, a tube sheet 4 at the top of the middle box 2, and a number of equally spaced mounting holes on the surface of the tube sheet 4, with bag filters installed on the inner wall of the mounting holes.

[0026] The bag filter includes a bag holder and filter bags 6. The filter bags 6 are fitted onto the bag holder and have a pleated surface. The upper housing 3 has a cleaning mechanism inside, which is used to clean the bag filter.

[0027] In this embodiment, the dust removal mechanism includes an air tank 9. Several equally spaced blowpipes 12 are arranged at the bottom of the air tank 9, with the nozzles of the blowpipes 12 facing the center of the filter bag 6. An air inlet is provided at the top of the air tank 9, and an electromagnetic pulse valve 13 is installed on the inner wall of the air inlet. During dust removal, the electromagnetic pulse valve 13 is opened according to a preset program. Compressed gas passes through the electromagnetic pulse valve 13 in a very short time, inducing several times the volume of air to enter the filter bag 6 through the nozzles on the blowpipes 12, forming an air wave. This causes the filter bag 6 to expand rapidly and vibrate from the opening to the bottom, resulting in a strong dust removal effect and shaking off the dust on the filter bag 6.

[0028] Furthermore, an exhaust fan is installed on the top of the upper housing 3. The input end of the exhaust fan is connected to the upper housing 3, and the output end of the exhaust fan is equipped with a smoke exhaust pipe. The exhaust fan can accelerate the airflow inside the upper housing 3 and improve the dust removal efficiency.

[0029] Both sides of the bottom inner wall of the middle box 2 are provided with guide blocks 8. The top of the guide blocks 8 has an arc-shaped structure. The guide blocks 8 can easily guide the falling dust into the ash hopper 1, avoiding the accumulation of dust in the middle box 2. The top inner wall of the middle box 2 is provided with several equally spaced baffles. The baffles are staggered with the bag dust collectors. The baffles can easily separate each bag dust collector, reducing the impact of the blown filter bag 6 on the normally operating filter bag 6, so as to ensure high dust removal efficiency.

[0030] It is worth mentioning that the upper housing is divided into three compartments, and each of the three compartments is equipped with an inspection door. When the pleated bag filter is working, offline cleaning is performed on a per-compartment basis, which reduces the loss of the entire equipment's filtration area during a single cleaning and ensures that the filtration area meets the design requirements and meets emission standards.

[0031] Working principle: During use, dust-laden gas enters the middle chamber 2 through the inlet pipe 7 and the ash hopper 1. Filter bags 6 are installed inside the middle chamber 2. After filtration by the filter bags 6, the dust is trapped on the outside of the filter bags 6. The purified gas enters the filter bags 6 and is then discharged through the upper chamber 3. The pleated filter bags 6 form a series of uniform pleats on the surface of the bag. Compared with ordinary flat filter bags, the filtration area of ​​the pleated filter bags 6 is nearly twice that of ordinary filter bags of the same size. At the same time, the density, depth and width of the pleats of the pleated filter bags 6 can be adjusted according to different working conditions to meet the dust removal effect, significantly improving the dust removal efficiency.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pleated bag filter structure, comprising a middle box (2), an upper box (3) provided at the top of the middle box (2), a dust hopper (1) provided at the bottom of the middle box (2), the dust hopper (1) being connected to the middle box (2), and an air inlet pipe (7) provided on one side of the dust hopper (1), characterized in that, The top of the middle box (2) is provided with a tube sheet (4), and the surface of the tube sheet (4) is provided with a number of equally spaced mounting holes, and the inner wall of the mounting holes is provided with a bag filter. The bag filter includes a bag fixing frame and a filter bag (6). The filter bag (6) is fitted onto the bag fixing frame. The surface of the filter bag (6) has a pleated structure. The upper housing (3) is equipped with a dust removal mechanism, which is used to clean the bag filter.

2. The pleated bag filter structure according to claim 1, characterized in that, The dust removal mechanism includes an air tank (9), and a number of equally spaced blow pipes (12) are provided at the bottom of the air tank (9), with the blow nozzles of the blow pipes (12) facing the center of the filter bag (6).

3. The pleated bag filter structure according to claim 2, characterized in that, The top of the air bag (9) is provided with an air inlet, and the inner wall of the air inlet is provided with an electromagnetic pulse valve (13).

4. The pleated bag filter structure according to claim 1, characterized in that, An exhaust fan is provided on one side of the upper housing (3), the input end of the exhaust fan is connected to the upper housing (3), and the output end of the exhaust fan is provided with a smoke exhaust pipe.

5. The structure of a pleated bag filter according to claim 1, characterized in that, Both sides of the bottom inner wall of the middle box (2) are provided with flow guide blocks (8), and the top of the flow guide block (8) is an arc surface structure.

6. The pleated bag filter structure according to claim 1, characterized in that, The top inner wall of the middle box (2) is provided with several partitions that are evenly distributed, and the partitions are arranged alternately with the bag filter.

7. The pleated bag filter structure according to claim 1, characterized in that, The upper box (3) is divided into three compartments, and each of the three compartments has an inspection door on its surface.

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