Tower type bag type dust collector

Abstract

The utility model discloses a tower type bag type dust collector which comprises a machine shell, a support and an inlet flue are arranged below the machine shell, an air flow uniform distribution chamber is arranged in the middle of the machine shell, a plurality of filter bag dust collection areas are arranged in the machine shell around the air flow uniform distribution chamber, and dust hoppers are arranged below the filter bag dust collection areas. A plurality of groups of airflow uniform distribution devices are arranged in the airflow uniform distribution chamber, the airflow uniform distribution chamber is communicated with the plurality of filter bag dust removal areas through the plurality of groups of airflow uniform distribution devices, filter bag assemblies are arranged in the plurality of filter bag dust removal areas, and each filter bag assembly comprises a tubesheet, a positioning frame and a plurality of filter bags; an air purification chamber is formed in the area, located on the periphery of the pattern plate, in the machine shell, and an air collection chamber is formed in the area, located above the airflow uniform distribution chamber and the multiple filter bag dust removal areas, in the machine shell; an ash removal system is arranged on the air purification chamber and is used for removing accumulated ash on the filter bag; the plurality of filter bag dust removal areas define a tower shape, the occupied area is small, the structure is compact, the filter bags can fill the space of the dust remover more compactly, and the adaptability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial smoke control, and particularly relates to a tower bag dust collector. Background Art

[0002] With the rapid development of the economy and the improvement of people's living standards, people's demands for environmental conditions are getting higher and higher. Air pollution is the main source of environmental pollution. In order to adapt to the requirements of environmental protection work under the new situation and improve air quality, higher requirements are put forward for the performance and reliability of environmental protection equipment. At present, there are three main types of dust collectors used for industrial smoke treatment: electrostatic precipitator, bag dust collector and electric bag composite dust collector. Bag dust collectors are not affected by dust characteristics, have the advantages of high efficiency in capturing full-size particles, high capture efficiency, long-term stable low emissions, and simple structure, and have been widely promoted and used.

[0003] For example, the bag filter with the publication number CN205007753U, the bag filter described in the patent is a typical structure in the prior art, which is mainly composed of a bracket, an upper box, a middle box, and an ash hopper. The filter bag and the flower plate are arranged inside the middle box, the flower plate is arranged horizontally, and the filter bag is vertically suspended in the flower plate hole. The dust-containing flue gas enters the bag filter from the air inlet on the left side of the middle box, and the dust is captured by the filter bag and deposited on the outer surface of the filter bag. The flue gas filtered by the filter bag is discharged from the air outlet on the right side of the middle box. The dust on the outer surface of the filter bag is pulse-sprayed on the filter bag by the cleaning system and falls into the ash hopper. When the filter bag is filtering, it is a "downward air inlet, upward air outlet" filtering method. The flue gas first enters the bottom of the filter bag area, then enters the filter bag upward for filtration, and then is discharged upward from the flower plate opening above.

[0004] However, when the bag filter of the bag dust collector with publication number CN205007753U is filtering, it adopts the filtering method of "wind inlet from below and air outlet from above". The smoke first enters the bottom of the filter bag area, and then enters the filter bag upward for filtration. When the filter bag is cleaned, the dust falls downward into the ash hopper. The airflow direction is opposite to the falling direction of the dust, which will produce secondary dust and reduce the cleaning effect. Utility Model Content

[0005] The utility model provides a tower bag dust collector, aiming to solve the problems that the existing bag dust collector has low smoke processing capacity, is prone to secondary dust generation when cleaning filter bags, and has poor dust cleaning effect.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A tower bag dust collector comprises: a casing, a bracket and an inlet flue are arranged below the casing, an airflow distribution chamber is arranged in the middle of the casing, the inlet flue is connected with the airflow distribution chamber, a plurality of filter bag dust removal areas are arranged around the airflow distribution chamber in the casing, a ash hopper is arranged below each filter bag dust removal area, a plurality of groups of airflow distribution devices are arranged in the airflow distribution chamber, the airflow distribution chamber is connected with a plurality of filter bag dust removal areas through a plurality of groups of airflow distribution devices, and a plurality of groups of airflow distribution devices correspond to a plurality of filter bag dust removal areas one by one respectively; a plurality of filter bag dust removal areas are each provided with a filter bag assembly, the filter bag assembly comprises: a flower plate, a positioning frame and a plurality of filter bags, the positioning frame is vertically arranged in the casing and close to the airflow distribution chamber, the flower plate is vertically arranged in the casing and close to the airflow distribution chamber, And it is parallel to the positioning frame, the positioning frame is provided with a number of through holes for air flow, the filter bag is open at one end and closed at the other end, the closed end of the filter bag is detachably connected to the positioning frame, the open end of the filter bag cooperates with the flower plate, the flower plate is provided with a number of through holes that cooperate with the open end of the filter bag, the open end of the filter bag is installed in the through holes of the flower plate, and several filter bags are horizontally and parallelly arranged; the area located outside the flower plate in the casing forms a clean air chamber, the area located above the airflow uniform distribution chamber and several filter bag dust removal areas in the casing forms an air collecting chamber, and sealing plates are provided above the dust removal areas of several filter bags, an outlet flue is provided above the casing, and the outlet flue is connected to the air collecting chamber; a dust cleaning system is provided on the clean air chamber, and the dust cleaning system is used to remove accumulated dust on the filter bags.

[0008] Furthermore, the cleaning system includes: an air storage tank, an air box, a pulse valve, a blow pipe and a control system. The air storage tank, the air box, the pulse valve and the blow pipe are connected in sequence. The control system is used to control the operation of the pulse valve. The air storage tank, the air box and the pulse valve are arranged on the outside of the clean air chamber. An external platform for installing or repairing the air box and the pulse valve is provided on the outside of the clean air chamber. A plurality of blow pipes are provided inside the clean air chamber. The blow pipes correspond to the filter bags in the filter bag assembly. A plurality of horizontally arranged internal platforms are provided inside the clean air chamber. The internal platforms are used to install or repair the filter bag assembly and the blow pipes.

[0009] Furthermore, at least one ash falling partition plate 1 and at least one ash falling partition plate 2 are arranged in the filter bag assembly, the angle between the ash falling partition plate 1 and the horizontal direction is 60°-80°, the lower end of the ash falling partition plate 1 is provided with an ash falling partition plate 2, the ash falling partition plate 2 is vertically arranged and forms an ash falling channel with the side wall of the casing, and the ash falling partition plate 1 is used to layer a plurality of filter bags.

[0010] Furthermore, the airflow distribution device is composed of a plurality of uniformly distributed guide plates, which are parallel to each other and arranged at equal intervals. The uniformly distributed guide plates are bent plates with an angle of 70°-90°. The angle of the bent plates is downward and the angle between the blades on the air inlet side of the bent plates and the horizontal direction is 50°-70°. Several groups of airflow distribution devices are arranged with a large lower opening and a small upper opening.

[0011] Furthermore, the closed end of the filter bag is connected to the positioning frame by means of bolts, hooks or clamps.

[0012] Compared with the prior art, the utility model has the following technical effects:

[0013] 1. In the tower bag dust collector described in the utility model, the filter bags in the filter bag assembly are fixed at both ends horizontally, and the filter bag assemblies are arranged in rows from bottom to top, which improves the positioning accuracy between the filter bags and avoids collision, wear and damage between the filter bags.

[0014] 2. The tower bag dust collector described in the utility model is composed of a plurality of filter bag dust removal areas, and the plurality of filter bag dust removal areas are surrounded in a tower shape. The large unit occupies a small area and has a compact structure. The filter bags can fill the dust collector space more compactly and have strong adaptability. It can adapt to unit systems with different sizes of flue gas volumes. When the filter bags are short and the number is large, the floor space does not increase, thereby reducing the floor space and cost of the dust collector and having excellent economy.

[0015] 3. The tower bag dust collector described in the utility model sets an airflow distribution chamber on the side of the filter bag dust removal area. When the smoke passes through the filter bag, the airflow enters and exits from the side, the airflow is uniform, and the airflow direction is perpendicular to the dust falling direction, which can reduce secondary dust and achieve better dust cleaning effect. At the same time, each filter bag dust removal area is arranged in layers along the height direction, and dust falling partitions are set between each layer of filter bag areas. Each layer of filter bag areas is independent of each other and is not affected by the upper filter bag area, which optimizes the load capacity of the upper and lower filter bags, effectively prolongs the service life of the filter bag, and improves the performance of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a tower bag dust collector described in the utility model;

[0017] Figure 2 yes Figure 1 AA view;

[0018] Figure 3 yes Figure 2 BB view;

[0019] Figure 4 yes Figure 2 CC view;

[0020] Figure 5 It is another structural schematic diagram of a tower bag dust collector described in the utility model;

[0021] Figure 6 yes Figure 5 DD view.

[0022] In the figure: 1. Inlet flue; 2. Bracket; 3. Ash hopper; 4. Casing; 5. Filter bag assembly; 6. Flower plate; 7. Positioning frame; 8. Clean air chamber; 9. Air collecting chamber; 10. Outlet flue; 11. Ash cleaning system; 12. External platform; 13. Air flow distribution chamber; 14. Air flow distribution device; 15. Internal platform; 16. Sealing plate; 17. Ash falling partition 1; 18. Ash falling partition 2. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the application and with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, a tower bag dust collector comprises: a casing 4, a bracket 2 and an inlet flue 1 are arranged below the casing 4, an airflow distribution chamber 13 is arranged in the middle of the casing 4, the inlet flue 1 is connected with the airflow distribution chamber 13, a plurality of filter bag dust removal areas are arranged around the airflow distribution chamber 13 in the casing 4, a ash hopper 3 is arranged below each filter bag dust removal area, a plurality of groups of airflow distribution devices 14 are arranged in the airflow distribution chamber 13, the airflow distribution chamber 13 is connected with a plurality of filter bag dust removal areas through a plurality of groups of airflow distribution devices 14, and a plurality of groups of airflow distribution devices 14 correspond to a plurality of filter bag dust removal areas one by one; a plurality of filter bag dust removal areas are each provided with a filter bag assembly 5, the filter bag assembly 5 comprises: a flower plate 6, a positioning frame 7 and a plurality of filter bags, the positioning frame 7 is vertically arranged in the casing 4 and close to the airflow distribution chamber 13, the flower plate The plate 6 is vertically arranged in the casing 4 and parallel to the positioning frame 7. The positioning frame 7 is provided with a plurality of through holes for airflow to pass through. The filter bag is open at one end and closed at the other end. The closed end of the filter bag is detachably connected to the positioning frame 7. The open end of the filter bag cooperates with the flower plate 6. The flower plate 6 is provided with a plurality of through holes that cooperate with the open end of the filter bag. The open end of the filter bag is installed in the through hole of the flower plate 6; the area located outside the flower plate 6 in the casing 4 forms a clean air chamber 8, and the area located above the airflow uniform distribution chamber 13 and the dust removal areas of the plurality of filter bags in the casing 4 forms an air collecting chamber 9. Sealing plates 16 are provided above the dust removal areas of the plurality of filter bags. An outlet flue 10 is provided above the casing 4, and the outlet flue 10 is connected to the air collecting chamber 9; a dust cleaning system 11 is provided on the clean air chamber 8, and the dust cleaning system 11 is used to remove dust accumulated on the filter bags.

[0025] like Figure 1-3As shown, the cleaning system 11 includes: an air storage tank, an air box, a pulse valve, a blow pipe and a control system. The air storage tank, the air box, the pulse valve and the blow pipe are connected in sequence. The control system is used to control the operation of the pulse valve. The air storage tank, the air box and the pulse valve are arranged on the outside of the clean air chamber 8. The outside of the clean air chamber 8 is provided with an external platform 12 for installing or repairing the air box and the pulse valve. A plurality of blow pipes are arranged inside the clean air chamber 8. The blow pipes correspond to the filter bags in the filter bag assembly 5. The clean air chamber 8 is provided with a plurality of horizontally arranged internal platforms 15. The internal platforms 15 are used to install or repair the filter bag assembly 5 and the blow pipe.

[0026] like Figure 1-4 As shown, at least one ash falling partition 17 and at least one ash falling partition 2 18 are arranged in the filter bag assembly 5. The angle between the ash falling partition 17 and the horizontal direction is 60°-80°. The lower end of the ash falling partition 17 is provided with an ash falling partition 2 18. The ash falling partition 2 18 is vertically arranged and forms an ash falling channel with the side wall of the casing 4. The ash falling partition 17 is used to layer a plurality of filter bags.

[0027] like Figure 1-3 As shown, the airflow distribution device 14 is composed of a plurality of uniformly distributed guide plates, which are parallel to each other and arranged at equal intervals. The uniformly distributed guide plates are bent plates with an angle of 70°-90°, the angle of the bent plates is downward, and the angle between the blades on the air inlet side of the bent plates and the horizontal direction is 50°-70°. Several groups of airflow distribution devices 14 are arranged in a manner with a large lower opening and a small upper opening.

[0028] like Figure 1 As shown, the closed end of the filter bag is connected to the positioning frame 7 by means of bolts, hooks or clamps.

[0029] In a specific embodiment of the present invention, Figure 1-3As shown, the casing 4 is the main structure of the tower bag filter, which is composed of plates and beams and is arranged on the bracket 2. Filter bag dust removal areas A, B, C, and D are arranged inside the casing 4, and ash hoppers 3 are arranged at the lower parts of the filter bag dust removal areas A, B, C, and D, respectively, and an airflow distribution chamber 13 is arranged in the middle of the filter bag dust removal areas A, B, C, and D. In the airflow distribution chamber 13, airflow distribution devices 14 are also arranged in the direction of each filter bag dust removal area A, B, C, and D, respectively. The airflow distribution device 14 is composed of uniformly distributed guide plates inclined toward the corresponding filter bag dust removal areas. Along the height direction of the dust collector, the lower opening is large and the upper opening is gradually reduced to match the trend of the flue gas volume gradually decreasing when the flue gas flows from bottom to top, and at the same time, the flue gas can enter the guide bending plate more smoothly. The uniform distribution guide plate is composed of a plurality of bent plates bent at 70° to 90° and arranged in parallel at a certain interval along the height direction. The opening of the bent plate faces downward, and the blades on the air inlet side of the bent plate are 50° to 70° with the horizontal direction. The dust-laden flue gas enters the air flow uniform distribution chamber 13 upward from the inlet flue 1, diffuses and buffers in the air flow uniform distribution chamber 13, and then is rectified and uniformly distributed by the air flow uniform distribution device 14, and then evenly enters the corresponding filter bag dust removal areas A, B, C, and D. The air flow uniform distribution chamber 13 is arranged above the inlet flue 1 and is connected to the inlet flue 1, so that the dust-laden flue gas first enters the air flow uniform distribution chamber 13;

[0030] A filter bag assembly 5 is arranged in each filter bag dust removal area A, B, C, and D. The filter bags in the filter bag assembly 5 are fixedly arranged at both ends horizontally, the open end of the filter bag is fixed in the vent hole of the flower plate 6, and the closed end at the rear is fixed on the positioning frame 7. The filter bag is arranged horizontally and fixedly positioned at both ends, which improves the positioning accuracy of the filter bag and avoids mutual collision between the filter bags. In order to reduce dust accumulation on the upper part of the filter bag, the filter bag adopts an elliptical bag or a flat bag. The flower plate 6 is arranged vertically and is a perforated plate made of a flat plate, and is provided with vent holes that match the open end of the filter bag. The positioning frame 7 is also arranged vertically and is in a grid shape, so that smoke can pass through without obstruction. The closed end of the rear end of the filter bag is detachably connected to the positioning frame 7, which can be achieved by bolts, hooks, clamps, etc., and the positioning connection is reliable and the disassembly and assembly are simple and convenient.

[0031] like Figure 1-3As shown, after the dust-containing flue gas is filtered by the filter bag, the clean flue gas flows out from the open end of the filter bag into the clean air chamber 8, then enters the air collecting chamber 9 upward, and is finally discharged through the outlet flue 10, thereby completing the purification process. The clean air chamber 8 is arranged on the side of the dust removal area of ​​the filter bag, and the air collecting chamber 9 and the outlet flue 10 are arranged above the dust removal area of ​​the filter bag. A sealing plate 16 is arranged between the dust removal area of ​​the filter bag and the air collecting chamber 9 to separate the original flue gas and the clean flue gas. In order to remove the dust accumulated on the outer surface of the filter bag, a cleaning system 11 is provided. The cleaning system 11 includes an air storage tank, an air box, a pulse valve, a blowpipe, and a control system. The air box is arranged on the outside of the clean air chamber 8, and is arranged vertically along the height direction of the clean air chamber 8; the blowpipe is arranged on the side of the filter bag opening inside the clean air chamber 8, and is arranged horizontally along the height direction of the clean air chamber 8, and is connected to the air box. As shown Figure 3 As shown, in order to facilitate the installation or maintenance of the filter bag assembly 5 and the blow pipe, an internal platform 15 is provided in the clean air chamber 8, and the internal platform 15 is provided in multiple layers according to the arrangement height of the filter bag assembly 5, and the height of each layer is convenient for the installation or maintenance of the filter bag assembly 5 and the blow pipe. Similarly, an external platform 12 is provided outside the clean air chamber 8 to facilitate the installation or maintenance of the air box and the pulse valve.

[0032] In a specific embodiment of the present invention, the filter bag dust removal areas include four areas A, B, C, and D, and the multiple filter bag dust removal areas are arranged in a tower shape. In the filter bag dust removal area, the filter bags are fixed at both ends horizontally, and the filter bag assemblies are arranged in rows from bottom to top. The number of filter bags arranged in the horizontal row direction is determined by the cleaning capacity of the cleaning system 11 and the length of the filter bags, and the number of filter bags arranged in the vertical height column direction is determined by the total number of filter bags required by the bag dust collector, the number of divided dust removal areas, and the number of single-row sprays of the pulse valve, to ensure that the filtering wind speed of the filter bags meets the relevant requirements. Figure 4As shown, in order to reduce the impact of the ash falling from the upper filter bag on the lower filter bag and reduce the secondary adsorption by the lower filter bag, each filter bag dust removal area is arranged in layers along the height direction, and an ash falling partition 17 and an ash falling partition 2 18 are arranged between each layer of filter bag areas. The horizontal slope of the ash falling partition 17 is greater than 60° and greater than the repose angle of the ash falling. The number of layers of the ash falling partition 17 is determined according to the arrangement height of the filter bag. Generally, the height of the uppermost filter bag and the lowermost filter bag in the height column direction of each layer of filter bag area is not more than 10 meters. The ash falling partition 2 is arranged between the filter bag area and the wall plate of the housing 4, and forms an ash lowering channel with the wall plate of the housing 4, so that the ash falling from the upper filter bag area can fall into the ash hopper through the ash lowering channel without being secondary adsorbed by the lower filter bag area. When the upper filter bag area is pulse-jet-cleaned, the ash falling from the upper filter bag falls into the ash-falling partition plate 2 17, then flows to the side, and then falls into the ash-falling partition plate 2 18 and the casing wall plate to form an ash-falling channel, and finally falls into the ash hopper. The ash falling from the bottom filter bag area falls directly into the ash hopper. When the pulse-jet-cleaning control is performed, it is set to start from the upper filter bag and spray-clean the ash row by row downwards to avoid multiple secondary adsorptions of the lower filter bag in a short period of time, thereby reducing the load of the lower filter bag.

[0033] like Figure 5 , Figure 6 As shown, another embodiment of the tower bag dust collector is shown. In order to facilitate the arrangement of the inlet flue 1, the second embodiment consists of three filter bag dust removal areas A, B, and C. An inlet flue 1 is arranged on one side of the dust removal area at the same plane height as the ash hopper. The rest of the structure is the same as the above embodiment.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A tower bag dust collector, characterized in that: include: A casing (4) is provided with a bracket (2) and an inlet flue (1) below the casing (4), an airflow distribution chamber (13) is provided in the middle of the casing (4), the inlet flue (1) is communicated with the airflow distribution chamber (13), a plurality of filter bag dust removal areas are provided around the airflow distribution chamber (13) in the casing (4), a ash hopper (3) is provided below each filter bag dust removal area, a plurality of groups of airflow distribution devices (14) are provided in the airflow distribution chamber (13), and the airflow distribution chamber ( 13) is connected to a plurality of filter bag dust removal areas through a plurality of groups of airflow distribution devices (14), and the plurality of groups of airflow distribution devices (14) correspond to the plurality of filter bag dust removal areas one by one; a filter bag assembly (5) is arranged in each of the plurality of filter bag dust removal areas, and the filter bag assembly (5) comprises: a flower plate (6), a positioning frame (7) and a plurality of filter bags, the positioning frame (7) is vertically arranged in the housing (4) and close to the airflow distribution chamber (13), the flower plate (6) is vertically arranged in the housing (4) ) and is parallel to the positioning frame (7), the positioning frame (7) is provided with a plurality of through holes for airflow to pass through, the filter bag is open at one end and closed at the other end, the closed end of the filter bag is detachably connected to the positioning frame (7), the open end of the filter bag is matched with the flower plate (6), the flower plate (6) is provided with a plurality of through holes matched with the open end of the filter bag, the open end of the filter bag is installed in the through hole of the flower plate (6), and the plurality of filter bags are arranged horizontally and in parallel; the casing (4) The area located outside the flower plate (6) forms a clean air chamber (8), and the area located above the air flow distribution chamber (13) and a plurality of filter bag dust removal areas in the casing (4) forms an air collecting chamber (9). A sealing plate (16) is provided above the plurality of filter bag dust removal areas. An outlet flue (10) is provided above the casing (4), and the outlet flue (10) is connected to the air collecting chamber (9). A dust cleaning system (11) is provided on the clean air chamber (8), and the dust cleaning system (11) is used to remove dust accumulated on the filter bags.

2. A tower bag dust collector according to claim 1, characterized in that: The dust cleaning system (11) comprises: an air storage tank, an air box, a pulse valve, a blow pipe and a control system. The air storage tank, the air box, the pulse valve and the blow pipe are connected in sequence. The control system is used to control the operation of the pulse valve. The air storage tank, the air box and the pulse valve are arranged on the outside of the clean air chamber (8). An external platform (12) for installing or repairing the air box and the pulse valve is arranged on the outside of the clean air chamber (8). A plurality of blow pipes are arranged inside the clean air chamber (8). The blow pipes correspond to the filter bags in the filter bag assembly (5). A plurality of layers of horizontally arranged internal platforms (15) are arranged inside the clean air chamber (8). The internal platforms (15) are used to install or repair the filter bag assembly (5) and the blow pipe.

3. A tower bag dust collector according to claim 1, characterized in that: At least one ash falling partition plate 1 (17) and at least one ash falling partition plate 2 (18) are arranged in the filter bag assembly (5); the angle between the ash falling partition plate 1 (17) and the horizontal direction is 60°-80°; the lower end of the ash falling partition plate 1 (17) is provided with an ash falling partition plate 2 (18); the ash falling partition plate 2 (18) is vertically arranged and forms an ash falling channel with the side wall of the casing (4); the ash falling partition plate 1 (17) is used to layer a plurality of filter bags.

4. A tower bag dust collector according to claim 1, characterized in that: The airflow distribution device (14) is composed of a plurality of uniformly distributed guide plates, which are parallel to each other and arranged at equal intervals. The uniformly distributed guide plates are bent plates with an angle of 70°-90°, the angle of the bent plates is downward, and the angle between the blades on the air inlet side of the bent plates and the horizontal direction is 50°-70°. The plurality of groups of airflow distribution devices (14) are arranged in a manner of having a large lower opening and a small upper opening.

5. A tower bag dust collector according to claim 1, characterized in that: The closed end of the filter bag is connected to the positioning frame (7) by means of bolts, hooks or clamps.

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