A top vertical air inlet electric bag composite dust collector

Abstract

The invention discloses a top vertical air inlet electric bag composite dust collector, comprising an anode wire tensioning device (1), an anode tube (2), a cathode wire (3), a cathode hanging device (4), an air inlet pipe (5), a blowing device (6), an upper box (7), a flower plate (8), a filter bag (9), a bag cage (10), a middle box (11), an ash hopper (12), and an air outlet pipe (13). The middle box (11) is placed above the ash hopper (12). The blowing device (6), the upper box (7) and the flower plate (8) are arranged into four standard unit modules. The air inlet pipe (5) is vertically placed in the center of the four unit modules. The air inlet pipe (5) is provided with an anode tube (2) and a cathode wire (3). The four unit modules are placed above the middle box (11). The air outlet pipe (13) is installed on the side of the upper box (7). The invention combines the advantages of an electrostatic precipitator and a bag filter, has uniform airflow distribution, low operating resistance, extends the service life of the filter bag, reduces steel consumption compared to conventional bag filters, and has the characteristics of simplicity, practicality, high efficiency, etc.

Description

Technical Field

[0001] The invention relates to dust removal equipment in the field of industrial environmental protection, and in particular to a top vertical air inlet electric bag composite dust collector. Background Art

[0002] In recent years, bag dust collectors have played an increasingly important role in industrial smoke purification, and the level of their application technology has been greatly improved. They have been widely used in various industries in my country.

[0003] Bag dust collectors have the advantages of high dust removal efficiency, stable outlet emission concentration, and strong adaptability to fluctuating flue gas conditions.

[0004] However, traditional bag dust collectors still have many problems during operation. First, the operating resistance is large and the energy consumption is high. Second, the filter bag has a short service life, usually 2-3 years, and the operation and maintenance costs are high. Third, in order to ensure low outlet emissions, the filtration wind speed is reduced, the equipment size is increased, and the floor space and steel consumption are large. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a top vertical air inlet electric bag composite dust collector, which integrates the advantages and functions of the electric dust collector into the interior of the bag dust collector, combines the advantages of the electric dust collector and the bag dust collector, simplifies the dust collector structure, improves the airflow organization and airflow distribution, prolongs the service life of the filter bags, and reduces the operating resistance and energy consumption.

[0006] The technical solution of the present invention is a top vertical air inlet electric bag composite dust collector, including an electrode wire tensioning device, an anode tube, a cathode wire, a cathode hanging device, an air inlet pipe, a blowing device, an upper box, a flower plate, a filter bag, a bag cage, a middle box, an ash hopper, and an air outlet pipe. The middle box is placed above the ash hopper, and the blowing device, the upper box and the flower plate are arranged into four standard unit modules. The air inlet pipe is vertically placed in the center of the four unit modules; an anode tube and a cathode wire are arranged in the air inlet pipe; the four unit modules are placed above the middle box; the air outlet pipe is installed on the side of the upper box; and the filter bag and the bag cage are hung on the flower plate.

[0007] According to an embodiment of the present invention, four unit modules are placed in a windmill shape, and each upper box body is equipped with a set of spraying devices and a set of flower plates.

[0008] According to an embodiment of the present invention, the top of the cathode wire is fixed by a cathode hanging device, and the bottom of the cathode wire is fixed by a cathode wire tensioning device; the cathode hanging device is fixedly installed on the side of the air inlet pipe.

[0009] According to an embodiment of the present invention, the cathode suspension device is composed of a suspension beam and a drop-out tube.

[0010] According to an embodiment of the present invention, the pole line tensioning device consists of a flexible fixing rope and a fixed steel frame.

[0011] According to an embodiment of the present invention, the anode tube is composed of a plurality of anode tube bundles. The side of the anode tube bundle is provided with flow guide holes, and the size, number and arrangement of the flow guide holes can be adjusted.

[0012] According to an embodiment of the present invention, the cross-section of the anode tube bundle is hexagonal, quadrilateral or circular; the length of the anode tube bundle can be adjusted in combination with the pipeline wind speed and the electric field strength to achieve sufficient charging efficiency.

[0013] According to an embodiment of the present invention, the cathode wire is installed in the center of the anode tube, with a single tube corresponding to a single wire.

[0014] According to an embodiment of the present invention, a high-voltage power supply for charging is installed on the side wall of the air inlet duct, or the high-voltage power supply for charging is supported on the upper box body, and the anode tube and cathode wire are cleaned by top mechanical vibration or ultrasonic cleaning.

[0015] According to an embodiment of the present invention, the pole line tensioning device adopts a suspended frame structure, and a fixed steel frame structure is adopted when the pole line is long or the wind speed is high and the airflow disturbance is large.

[0016] The anode tube, cathode wire, cathode wire tensioning device and cathode hanging device are combined into a charging device to charge the smoke particles entering the air inlet pipe; the particles in the flue gas can flow between the anode tubes to ensure sufficient charging; after the dust is charged, it flows out through the guide holes on the side wall of the anode tube and the lower part of the anode tube and enters the middle box; the charged dust reaches the filter bag and is blocked outside the filter material, and the clean gas passes through the flower plate and enters the upper box, and is finally discharged from the air outlet pipe.

[0017] The beneficial effects of the present invention are as follows.

[0018] (1) Low filtration resistance: This device adds a charging device in the air inlet channel of the bag filter to charge the particulate matter in the flue gas entering the air inlet pipe. After pre-charging, the fine particles form a loose powder cake structure on the surface of the filter bag, which is sponge-like. This powder cake structure can effectively filter the fine particles in the flue gas. At the same time, it has good air permeability and low filtration resistance.

[0019] (2) Extend the service life of the filter bag: The pressure difference on the surface of the filter bag rises slowly, which extends the cleaning cycle of the filter bag and reduces the cleaning frequency. On the other hand, fine particles are difficult to enter the filter material layer due to the blockage of the powder cake, thus increasing the stable operation time of the filter bag and extending the service life of the filter bag.

[0020] (3) Good airflow organization: The structure of this device is simple and compact. Compared with conventional bag dust collectors, the airflow has fewer deflections and does not directly flush the filter bags. The flue gas enters from the central air inlet. Under the action of the guide holes of the anode tube bundle, the airflow radiates out from the side walls and bottom of the anode tube, making the airflow distribution more uniform. The flower plate is divided into several independent modules and distributed around the air inlet in a windmill shape. The amount of flue gas distributed to each unit is relatively uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a top vertical air inlet electric bag composite dust collector.

[0022] Figure 2 This is a standard 4-unit module structure diagram.

[0023] Figure 3 yes Figure 1 AA cross-section diagram.

[0024] Figure 4 yes Figure 1 BB cross-section diagram.

[0025] Figure 5 This is a schematic diagram of the anode tube bundle from the front.

[0026] Figure 6 Schematic diagram of the anode tube bundle from top view.

[0027] In the figure: 1-anode wire tensioning device, 2-anode tube, 3-cathode wire, 4-cathode hanging device, 5-air inlet pipe, 6-blowing device, 7-upper box, 8-flower plate, 9-filter bag, 10-bag cage, 11-middle box, 12-ash hopper, 13-air outlet pipe, 14-dropping pipe, 15-suspension beam, 16-flexible fixing rope, 17-fixed steel frame, 18-anode tube bundle. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figure 1 As shown, a top vertical air inlet electric bag composite dust collector is composed of an anode wire tensioning device 1, an anode tube 2, a cathode wire 3, a cathode hanging device 4, an air inlet pipe 5, a blowing device 6, an upper box body 7, a flower plate 8, a filter bag 9, a bag cage 10, a middle box body 11, an ash hopper 12, and an air outlet pipe 13.

[0030] A middle box body 11 is placed above the ash hopper 12; a flower plate 8, an upper box body 7 and a blowing device 6 are placed above the middle box body 11 in a windmill shape; each set of upper box bodies 7 is equipped with a set of blowing devices 6 and a set of flower plates 8; the blowing devices 6, the upper box body 7 and the flower plates 8 are arranged into four standard unit modules; the air inlet pipe 5 is vertically placed in the center of the four unit modules; the filter bag 9 and the bag cage 10 are vertically installed on the flower plate 8; the anode tube 2 and the cathode wire 3 are installed in the air inlet pipe 5; the top of the cathode wire 3 is fixed by the cathode hanging device 4, and the bottom of the cathode wire 3 is fixed by the cathode wire tensioning device 1; the cathode hanging device 4 is fixedly installed on the side of the air inlet pipe 5; the air outlet pipe 13 is installed on the side of the upper box body 7.

[0031] like Figure 2 As shown, the top of the cathode line 3 is fixed by a cathode hanging device 4 , and the cathode hanging device 4 is composed of a hanging beam 15 and a drop tube 14 .

[0032] like Figure 3 As shown, the bottom of the cathode wire 3 is fixed by a pole wire tensioning device 1, which is composed of a flexible fixing rope 16 and a fixed steel frame 17 to prevent the pole wire from swinging.

[0033] like Figure 4 As shown, the anode tube 2 is composed of a plurality of anode tube bundles 18, and the cross-section of the anode tube bundle 18 is hexagonal, quadrilateral and circular; the side of the anode tube bundle 18 is provided with guide holes, and the size and arrangement of the guide holes can be adjusted; on the one hand, the airflow entering the air inlet pipe 5 is allowed to flow between the tube bundles to improve the charging effect; on the other hand, most of the airflow carries the charged dust and flows out from the outermost tube bundle side wall, and the rest flows out from the bottom of the tube bundle.

[0034] The invention has a compact structure, combines the advantages of an electrostatic precipitator and a bag dust collector, has high dust removal efficiency, uniform airflow distribution, low operating resistance, extends the service life of the filter bags, reduces operating energy consumption and equipment floor space, and has lower steel consumption than conventional bag dust collectors. It has the characteristics of simplicity, practicality, and high efficiency.

[0035] The above detailed description of the implementation scheme in conjunction with the accompanying drawings is only a preferred implementation scheme of the present invention. However, the present invention is not limited to the specific details in the above scheme. Any modification or substitution made within the concept and principle of the present invention is within the protection scope of the present invention.

Claims

1. A top vertical air inlet electric bag composite dust collector, comprising an anode wire tensioning device (1), an anode tube (2), a cathode wire (3), a cathode hanging device (4), an air inlet pipe (5), a blowing device (6), an upper box (7), a flower plate (8), a filter bag (9), a bag cage (10), a middle box (11), an ash hopper (12), and an air outlet pipe (13), wherein the middle box (11) is placed above the ash hopper (12), and the characteristics are as follows: The spray device (6), the upper box body (7) and the flower plate (8) are arranged into four standard unit modules, and the air inlet pipe (5) is vertically placed in the center of the four unit modules; the air inlet pipe (5) is provided with an anode tube (2) and a cathode wire (3); the four unit modules are placed above the middle box body (11); the air outlet pipe (13) is installed on the side of the upper box body (7); the flower plate (8) is hung with a filter bag (9) and a bag cage (10); the anode tube (2) is composed of an anode tube bundle (18), and the side of the anode tube bundle (18) is provided with a guide hole; the cathode suspension device (4) is composed of a suspension beam (15) and a drop line pipe (14); the pole line tensioning device (1) is composed of a flexible fixing rope (16) and a fixed steel frame (17).

2. The top vertical air inlet electric bag composite dust collector according to claim 1 is characterized in that The four unit modules are arranged in a windmill shape, and each set of upper box body (7) is equipped with a set of spraying device (6) and a set of flower plate (8).

3. The top vertical air inlet electric bag composite dust collector according to claim 1 is characterized in that The top of the cathode wire (3) is fixed by a cathode hanging device (4), and the bottom of the cathode wire (3) is fixed by a cathode wire tensioning device (1); the cathode hanging device (4) is fixedly mounted on the side of the air inlet pipe (5).

4. The top vertical air inlet electric bag composite dust collector according to claim 1 is characterized in that The cross-section of the anode tube bundle (18) is hexagonal, quadrilateral or circular.

5. The top vertical air inlet electric bag composite dust collector according to claim 1 is characterized in that The cathode wire (3) is installed in the center of the anode tube (2), with a single tube and a single wire.

6. The top vertical air inlet electric bag composite dust collector according to claim 1 is characterized in that A high-voltage power source for charging is installed on the side wall of the air inlet pipe (5), or the high-voltage power source for charging is supported on the upper box body, and the anode tube (2) and the cathode wire (3) are cleaned by top mechanical vibration or sonic cleaning.

7. The top vertical air inlet electric bag composite dust collector according to claim 1 is characterized in that The wire tensioning device (1) adopts a suspended frame structure. When the pole line is long or the wind speed is high and the airflow disturbance is large, a fixed steel frame (17) structure is adopted.

Images