CN201618490U - A low-resistance and high-efficiency electric bag combined dust collector - Google Patents

Abstract

The utility model discloses a low-resistance and high-efficiency electric bag combined dust collector. The upper part inside the shell of the bag dust removal unit is a clean air chamber, and the lower part is a dust removal chamber. In the interior of the dust removal chamber, there are several filter bags on both sides of the dust removal chamber, the middle of which is the flue gas inlet channel, and the upper part of the bag dust removal unit is a gas outlet smoke box, and the connection between the gas outlet smoke box and the clean air chamber is through a pipe. It is connected with each other, and also includes a longitudinal air equalizing plate and a horizontal air equalizing plate. Both the longitudinal air equalizing plate and the horizontal air equalizing plate are porous plates with a number of ventilation holes on the flat plate. The longitudinal air equalizing plates are respectively arranged in the dust removal room and located The front sides of several filter bags on both sides of the interior and the horizontal air equalizing plates are respectively arranged on both sides of the flue gas inlet channel in the middle of the dust removal chamber. The dust collector can control the flue gas flow direction and flow velocity in the bag dust removal unit, so as to balance the load of each filter bag in the bag dust removal unit.

Description

A low-resistance and high-efficiency electric bag combined dust collector

technical field

The utility model relates to a low-resistance and high-efficiency electric bag combined dust collector, which comprises an electrostatic dust removal unit and a cloth bag dust removal unit.

Background technique

The existing low-resistance and high-efficiency electrostatic bag combined dust collector includes an electrostatic dust removal unit and a bag dust removal unit, and the electrostatic dust removal unit and the bag dust removal unit are connected in series as a whole. The electrostatic precipitator unit includes an air intake smoke box, which is arranged on the front face of the electrostatic precipitator unit. The upper part of the shell of the bag dust removal unit is a clean air chamber, and the lower part is a dust removal chamber. The blowing pipe and nozzle of the blowing device are located inside the clean air chamber, and there are several filter bags inside the dust removal chamber. The upper part of the bag dust removal unit shell is provided with an outlet smoke box, and the outlet smoke box and the clean air chamber are connected through a connecting pipe, and the lower part of the bag dust removal unit shell is provided with an ash hopper. When the low-resistance and high-efficiency electric bag combined dust collector is working, the dust-laden gas first enters it from the intake smoke box of the electrostatic precipitator unit. , is collected by the dust collecting electrode, the flue gas after electrostatic precipitating directly enters the bag dust removal unit, the clean gas filtered by the filter bag enters the clean gas chamber, and the clean gas entering the clean gas chamber enters the outlet flue gas through the connecting pipe out of the box. Since the flue gas after dust removal by the electrostatic precipitator unit directly enters the bag dust removal unit, the air flow direction and flow velocity of the flue gas cannot be controlled, resulting in uneven loads on the filter bags in the bag dust removal unit, thereby affecting the dust removal efficiency.

Utility model content

The technical problem to be solved by the utility model is to provide a low-resistance and high-efficiency electric bag combined dust collector, which can control the direction and flow rate of the flue gas flow in the bag dust removal unit, so that the load of each filter bag in the bag dust removal unit is balanced, Thereby improving the dust removal efficiency.

In order to solve the above technical problems, the utility model provides a low-resistance and high-efficiency electric bag combined dust collector, which includes an electrostatic dust removal unit and a bag dust removal unit. The electrostatic dust removal unit and the bag dust removal unit are connected in series as a whole. The smoke box is arranged on the front end of the electrostatic precipitator unit. The upper part of the shell of the bag dust removal unit is a clean air chamber, and the lower part is a dust removal chamber. The blowing pipe and nozzle of the blowing device are located inside the clean air chamber. There are several filter bags on both sides of the dust removal chamber, the middle of which is the flue gas inlet channel, and the outlet smoke box is installed above the bag dust removal unit shell. The lower part of the unit shell is provided with an ash hopper, and also contains a longitudinal air equalization plate and a horizontal air equalization plate. In the dust removal chamber and on the front side of several filter bags on both sides of the interior, the horizontal air equalizing plates are respectively arranged on both sides of the smoke inlet passage in the middle of the dust removal chamber.

The clean air chamber in the upper part of the bag dust removal unit shell is divided into at least two or more units, and each unit is connected to the outlet smoke box through its own connecting pipe, and the top of each unit is provided with a ventilation port. Off-line devices are respectively arranged above the vents. The off-line devices include a cylinder, a cylinder support and a valve plate. The cylinder support is set on the connecting pipe, the cylinder is set on the cylinder support, and the valve plate is set on the piston rod of the cylinder. The piston rod is located directly above the vent.

The smoke outlet cross-section of the outlet smoke box has a gradually increasing structural shape to keep the flow velocity of the smoke in all places inside the box consistent.

Since there are longitudinal air equalizing plates on the front sides of several filter bags on both sides of the dust removal chamber of the bag dust removal unit, and horizontal air equalizing plates are respectively installed on both sides of the middle flue gas inlet channel inside the dust removal chamber, after electrostatic dust removal When the dust-laden flue gas enters the bag filter unit, a small amount of dust-laden flue gas passes through the filter bag from the bottom of the filter bag and enters the clean air chamber, while a large amount of dust-laden flue gas passes through the longitudinal air equalizing plate and the horizontal air equalizing plate The ventilation holes of the filter bag enter into the clean air chamber through the filter bag horizontally. When the flue gas passes through the ventilation holes of the longitudinal air equalizing plate and the horizontal air equalizing plate, the air flow direction and velocity of the flue gas are controlled, so that each bag dust removal unit The load of the filter bag is balanced, thus improving the dust removal efficiency. Since the clean air chamber in the upper part of the bag dust removal unit shell is divided into at least two or more units, each unit is connected to the exhaust smoke box through its own connecting pipe, and the top of each unit is provided with a vent, and the top of the vent is provided There is an off-line device. On the one hand, when the filter bag located under a certain unit in the clean air room needs to be overhauled, the off-line device located in the unit can be conveniently closed so that the unit is not connected to the exhaust smoke box, so that the filter bag can be repaired. On the other hand, when the off-line device is closed so that the unit is not connected to the outlet smoke box, the nozzle of the blowing device located in the unit can be opened to clean the filter bag under the unit without affecting the clean air. Operation of filter bags under other units of the air chamber. Since the smoke outlet cross-section of the outlet smoke box is a gradually increasing structural shape, the flow velocity of the flue gas is kept consistent everywhere in it, which can reduce the resistance caused by the disturbance caused by the uneven flow velocity and flow, so it can not only save energy and reduce energy consumption. Consumption, but also help to improve dust removal efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

In the figure 1. Electrostatic precipitator unit, 2. Intake smoke box, 3. Ash hopper, 4. Bag dust removal unit, 5. Filter bag, 6. Shell, 7. Longitudinal air equalizing plate, 8. Dust removal chamber, 9. Clean air chamber, 10. Nozzle, 11. Valve plate, 12. Piston rod, 13. Connecting pipe, 14. Injection device, 15. Outlet smoke box, 16. Air outlet, 17. Cylinder, 18. Horizontal air equalizing plate , 19. Over flue gas channel, 20. Cylinder support.

Detailed ways

In Fig. 1 and Fig. 2, a low-resistance high-efficiency electric bag combined dust collector includes an electrostatic dust removal unit 1 and a bag dust removal unit 4, and the electrostatic dust removal unit 1 and the bag dust removal unit 4 are connected in series as a whole. The electrostatic precipitator unit 1 includes an air intake smoke box 2 which is arranged on the front end face of the electrostatic precipitator unit 1 . The upper part inside the housing 6 of the bag dust removal unit 4 is a clean air chamber 9 , and the lower part thereof is a dust removal chamber 8 . The blowing pipe and the nozzle 10 of the blowing device 14 are located inside the clean air chamber 9 . Both sides of the inside of the dust removal chamber 8 are respectively provided with a number of filter bags 5 , with a flue gas inlet channel 19 in the middle. A gas outlet smoke box 15 is arranged above the housing 6 of the bag dust removal unit 4 , and the gas outlet smoke box 15 and the clean air chamber 9 are connected through a connecting pipe 13 . The lower part of the casing 6 of the bag dust removal unit 4 is provided with an ash hopper 3 . The dust remover also contains a longitudinal air equalizing plate 7 and a transverse air equalizing plate 18 . Both the longitudinal air equalizing plate 7 and the transverse air equalizing plate 18 are perforated plates provided with several ventilation holes on the flat plate. In this embodiment, the longitudinal air equalizing plate 7 and the transverse air equalizing plate 18 are two plates respectively, and the two longitudinal air equalizing plates 7 are respectively arranged in the dust removal chamber 8 and located on the sides of the several filter bags 5 provided on both sides thereof. The front side and two transverse air equalizing plates 18 are respectively arranged on both sides of the smoke inlet passage 19 in the middle of the dust removal chamber 8 . In order to facilitate maintenance or dust removal, the clean air chamber 9 in the upper part of the housing 6 of the bag dust removal unit 4 is divided into at least two or more units. In this embodiment, it is divided into six units, and each unit passes through its own connecting pipe It is connected with the gas outlet smoke box 15, and the top of each unit is provided with vents respectively, and an off-line device is respectively provided above each vent, and the off-line device includes a cylinder 17, a cylinder support 20 and a valve plate 11, and the cylinder support 20 is arranged on On the connecting pipe 13, the cylinder 17 is arranged on the cylinder support 20, and the valve plate 11 is arranged on the piston rod 12 of the cylinder 17, and the piston rod 12 is located directly above the air vent. In order to keep the flow velocity of the flue gas in the outlet smoke box 15 consistent, and to reduce the resistance caused by the disturbance caused by the uneven flow velocity, the smoke outlet section of the outlet smoke box 15 has a gradually increasing structural shape, which can not only save energy Reduce consumption, and help to improve dust removal efficiency. When working, the dust-laden flue gas first enters the air intake box 2 from the front end of the electrostatic precipitator unit 1, and after being charged, the dust particles of the dust-laden flue gas tend to the dust-collecting electrode under the action of the electric field force and are captured by the dust-collecting electrode When the flue gas after electrostatic dust removal enters the bag dust removal unit 4, except for a small amount of dusty flue gas passing through the filter bag 5 from the bottom of the filter bag 5 and entering the clean air chamber 9, a large amount of dusty flue gas passes through The ventilation holes of the longitudinal air equalizing plate 7 and the horizontal air equalizing plate 18 enter the clean air chamber 9 through the filter bag 5 horizontally. The airflow direction and flow velocity are controlled, so that the load of each filter bag 5 of the bag dust removal unit 4 is balanced, thereby improving the dust removal efficiency. Enter the clean gas of each unit in the clean air chamber 9. At this time, the valve plate 11 of the off-line device is away from the vent, passes through the vent on the top of each unit, enters the gas outlet smoke box 15, and is discharged through the gas outlet 16. When the filter bag 5 located under a certain unit in the clean air chamber needs to be overhauled, the off-line device located in the unit can be closed so that the unit is not communicated with the exhaust smoke box 15, so that the filter bag 5 can be overhauled. When the off-line device in a certain unit of the clean air chamber 9 is closed, the nozzle 10 of the blowing device located in the unit is opened, and the filter bag 5 under the unit can be cleaned without affecting the clean air chamber 9 Work on filter bags below other units.

Claims (3)

1. high-efficiency low-resistance assembled electric bag dust collector, it contains electrostatic precipitation unit and bag-type dust unit, electrostatic precipitation unit and bag-type dust unit strings are connected as a whole, the electrostatic precipitation unit contains the air inlet smoke box, this smoke box is arranged on the front end face of electrostatic precipitation unit, the top of bag-type dust unit housing inside is air-purifying chamber, its underpart is a dirt pocket, the inside that the winding-up pipe of blowing device and nozzle are positioned at air-purifying chamber, the inner both sides of dirt pocket are respectively equipped with some filter bags, it is middle for advancing exhaust gases passes, the top of bag-type dust unit housing is provided with the smoke box of giving vent to anger, give vent to anger and link by connecting pipe between smoke box and the air-purifying chamber, the bottom of bag-type dust unit housing is provided with ash bucket, it is characterized in that: also contain vertical homogenating plate and horizontal homogenating plate, vertically homogenating plate and horizontal homogenating plate all are the porous plate that flat board is provided with some air vents, and vertical homogenating plate is separately positioned in the described dirt pocket and is positioned at the front side of its some filter bags in inner both sides, laterally homogenating plate is separately positioned on the middle both sides of advancing exhaust gases passes of described dirt pocket.

2. a kind of high-efficiency low-resistance assembled electric bag dust collector according to claim 1, it is characterized in that: the air-purifying chamber of described bag-type dust unit housings internal upper part is divided into the unit more than two at least, each unit connecting pipe by separately respectively is connected with the described smoke box of giving vent to anger, the top of each unit is respectively equipped with ventilating opening, the top of each ventilating opening is respectively equipped with off-line equipment, off-line equipment comprises cylinder, cylinder saddle and valve plate, cylinder saddle is arranged on the connecting pipe, cylinder is arranged on the cylinder saddle, valve plate is arranged on the piston rod of cylinder, this piston rod be positioned at ventilating opening directly over.

3. a kind of high-efficiency low-resistance assembled electric bag dust collector according to claim 1 is characterized in that: the smoke cross section of the described smoke box of giving vent to anger for the planform that increases gradually make flue gas within it everywhere flow velocity be consistent.

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