CN2541056Y - High efficiency centrifugal duster with filter net - Google Patents

Abstract

A high-efficiency centrifugal dust collector with a filter screen, which is to install a filter screen cylinder at the lower end of the exhaust pipe of the existing centrifugal dust collector, and add a loading and unloading door, an electric dust brushing mechanism, a dust collecting bucket and a small dust particle outlet pipe and so on. The dust removal efficiency of this kind of dust collector is greatly improved due to the addition of filter screens, and the utility model with two or more filter screens whose apertures are successively reduced is used in series, and its dust removal effect can meet the dust removal requirements of most production and living fields at present. . It has the advantages of high dust removal efficiency, simple structure, low cost price, small space occupation, energy saving, wide application, convenient installation and maintenance, and low operating cost. If used as a separator, it can separate two There are more than one granular products of different sizes, which has practical value and significance in the production of many industries.

Description

High-efficiency centrifugal dust collector with filter

The utility model relates to a high-efficiency centrifugal dust collector with a filter screen, which can be widely used in various industries such as petrochemical industry, machinery, power generation, metallurgy, mining, food, grain, cement, etc. to remove dust in dusty air. Separation of small granular or powdery finished or semi-finished products in the air containing materials in some industrial enterprises that produce small granular or powdery products. The utility model that is used for separation occasion should be called centrifugal separator. In order to make the statement simple and clear, the following is mainly explained from the perspective of dust removal.

The centrifugal dust collector is a machine that uses the centrifugal force of the rotating airflow to blow the solid particles in the dusty air onto the wall of a cylindrical or conical container, so that the solid particles slide down the wall to achieve the purpose of dust removal. The centrifugal dust collector has the advantages of simple structure, low cost, wide application range, and convenient maintenance. It has been the most widely used dust removal equipment at home and abroad for many years, and plays a pivotal role in industrial production and environmental protection. However, the efficiency of the existing centrifugal dust collector can reach more than 95% when dealing with dust above 40 microns, but its efficiency can only reach about 40% when dealing with dust below 5 microns, which has long been unable to meet the rapid industrial development and continuous improvement. environmental protection requirements. In addition, there are mainly two types of dry dust removal equipment at home and abroad: bag filter and electrostatic precipitator. Although these two kinds of dust collectors have high dust removal efficiency (up to 99.8%), they have complex structures and occupy an area. Large area, expensive, high operating costs and complex maintenance and other disadvantages, so the scope of its application is greatly limited.

The purpose of this utility model is to provide a high-efficiency centrifugal dust collector with a filter screen that can meet the dust removal requirements of most current production and living fields, has a simple structure, is convenient to use and maintain, and is low in cost.

The purpose of this utility model is to realize by installing the filter screen tube at the lower end of the exhaust pipe of the existing centrifugal dust collector, and adding an electric dust brushing device, a loading and unloading door, a dust collecting bucket and a small dust particle outlet pipe.

Because the utility model is equipped with a filter screen cylinder at the lower end of the exhaust pipe, except for larger and heavier dust particles that can be removed by the centrifugal principle, the dust particles larger than the filter screen aperture are blocked outside the filter screen and removed, slightly smaller than the filter screen. The larger and heavier dust particles whose pore size can just pass through the filter holes are deposited in the dust collecting hopper at the lower part of the filter cylinder due to gravity, and are removed through the small dust particle outlet pipe. Since the dust removal principle of the utility model has been changed from purely relying on centrifugal force to mainly relying on filter screen for dust removal, the dust removal efficiency, especially the dust removal efficiency for fine dust particles, only depends on the size of the selected filter screen aperture, which has been designed. There is no need to consider the influence of air velocity, eddy current, turbulent flow and other factors, so the geometric size of the whole dust collector can be greatly reduced compared with the existing centrifugal dust collector, which can reduce the consumption of raw materials, reduce the occupied space, and reduce the manufacturing cost. Because the utility model adds a filter screen, the dust removal efficiency of the machine is greatly improved. Analyzing from the structural principle, if the filter screen is selected small enough, the dust removal efficiency of the utility model can also reach the same level as the bag filter and the electrostatic precipitator, but in practical application, because a single filter screen of the utility model The area is limited, the untreated dusty air has a large dust content, and the filter blockage rate is high, which will increase the pressure loss, reduce the working efficiency, and even make the machine unable to work continuously. Therefore, the dust removal efficiency of a single unit of the utility model is higher than that of the existing Although the centrifugal dust collector has been greatly improved, there is still a considerable gap compared with the bag filter and the electrostatic precipitator. In order to further improve the dust removal efficiency, more than two sets of the utility model whose apertures of the filter screens are gradually reduced can be connected in series. In use, its dedusting efficiency is sufficient to meet the dedusting needs of most production and living areas with low requirements, and in the occasions with high dedusting requirements, the utility model can be used as a first-stage deduster by using a single or multiple dedusters in series. However, using a bag filter or electrostatic precipitator with greatly reduced specifications as a secondary dust collector can also reduce the floor area, reduce investment, and reduce operating costs, and it also has quite significant economic benefits. In addition, if the utility model with single or more than two filter screens whose pore diameters are successively reduced is used as a separator, two or more can be separated in one circulation process due to the different particle sizes of the separated materials inside and outside the filter screen and the different filter screen pore diameters. It is of practical value and important significance in the production of many industries to produce materials with different particle sizes.

The work of the utility model to remove the accumulated dust on the filter screen is completed by the electric dust brushing device. The brush on the electric dust brushing device driven by the motor rotates around the filter cylinder continuously to sweep away the accumulated dust, so that the dust collector can work effectively without interruption. The electric dust brushing device adopted by the utility model is much simpler than the blowback pulse dust cleaning structure of the bag filter. And though the electrostatic precipitator does not have corresponding cleaning mechanism, the structure of its complete machine is much more complicated than the utility model. Therefore, compared with the bag filter and the electrostatic precipitator, the utility model has the advantages of simple structure, low equipment price and operating cost, small space occupation, energy saving, wide application range and convenient installation and maintenance.

Below in conjunction with accompanying drawing and embodiment do further explanation

Accompanying drawing 1 is the overall structural representation of the utility model.

In the figure: 1 exhaust pipe, 2 air inlet pipe, 3 cylinder body, 4 loading and unloading door, 5 filter screen cylinder, 6 ash collecting bucket, 7 hollow shaft, 8 electric dust brushing device, 9 small dust particle outlet pipe, 10 plug plate

Accompanying drawing 2 is the structural schematic diagram of the utility model electric dust brushing device.

In the figure: 1 barrel, 2 brushes, 3 ash collecting hoppers, 4 brush racks, 5 large bevel gears, 6 small bevel gears, 7 transmission shafts, 8 reducers, 9 gear boxes, 10 hollow shafts, 11 small dust pellet outlet tube

As shown in Figure 1: the cylinder body (3) of the utility model is made up of a section of conical cylinder in the middle of a cylindrical cylinder at both ends, and an arc-shaped loading and unloading door (4) is installed on the cylinder body (3). There is an air inlet pipe (2) with a rectangular cross-section in the tangential direction of the large cylinder on the upper part of the cylinder (3), and there is a cylindrical exhaust pipe (1) in the center of the upper end surface sealing plate of the large cylinder on the upper part of the cylinder (3). A cylindrical filter cylinder (5) is installed at the lower end of the exhaust pipe (1), and an electric dust brushing device (8) is installed at the lower part of the filter cylinder (5), and a small cylinder at the lower end of the cylinder body (3) is installed. The insert plate (10), the lower end of the filter cylinder (5) is fixed on the upper end of the conical ash collecting hopper (6), and the lower end of the ash collecting hopper (6) is inserted into the hollow shaft (7) of the gear box of the electric dust brushing device (8) The upper end of the shaft hole, and the cylindrical small dust particle outlet pipe (9) is then connected to the lower end of the hollow shaft (7).

As shown in Figure 2: the electric dust brushing mechanism of the present utility model comprises a square box-shaped gear casing (9) fixed on the central position of the lower part of the cylinder body (1). A small bevel gear (6) connected to the reducer (8) outside the cylindrical body (1) and a large bevel gear (5) that is sleeved on the hollow shaft (10) and meshes with the small bevel gear (6). The doorframe-shaped brush frame (4) is fixed on the upper end surface of the large bevel gear (5) passing through the gear box (9), and the strip-shaped hair brush (2) is fixed on the brush frame (4). The upper end of the hollow hole of the hollow shaft (10) is connected to the dust collecting hopper (3), and the lower end is connected to the small dust particle outlet pipe (11), so that it can simultaneously support the large bevel gear (5) and provide a discharge channel for small dust particles double function. The work of the electric dust brushing mechanism is completed by the rotation of the transmission shaft (7), the small bevel gear (6), the large bevel gear (5), the brush frame (4) and the brush (2) by the reducer (8) in turn .

As shown in Figure 1: when the utility model is working, the dusty air enters the cylinder (3) from the air inlet pipe (2), and the larger and heavier dust contained in the air will fall along the cylinder wall due to centrifugal force, and the remaining particle diameter Dust particles larger than the aperture of the filter screen are blocked out of the filter screen, and dust particles smaller than the aperture of the filter screen pass through the filter screen, and some of the larger and heavier dust particles fall to the dust collector at the lower end of the filter cylinder (5) due to gravity. bucket (6) and falls down through the small dust outlet pipe (9), and the rest of the smaller and lighter dust is discharged from the exhaust pipe (1) with the air or enters the utility model with a smaller filter screen aperture, and can also enter Further dust removal in bag filter or electrostatic precipitator. At the same time, the brush on the electric dust brushing device (8) powered by the electric reducer is constantly rotating, brushing away the dust adhered to the filter screen cylinder (5), preventing the filter screen from clogging, and ensuring the dust removal of the utility model. Continuously work normally. The function of the inserting plate (10) located at the lower end of the cylinder (3) is to ensure that the lower opening of the cylinder (3) and the small dust particle outlet pipe (9) only allows dust to be discharged outwards, and does not allow air to enter the cylinder ( 3), if necessary, it can be replaced by a sealed container or a wind shelter with the same function. The loading and unloading door (4) is used for installing and maintaining the equipment, disassembling and disassembling the filter screen cylinder (5), dust collection bucket (6), electric dust brushing device (8) and small dust particle outlet pipe (9) in the cylinder body (3). ) and so on.

When the utility model is used as a separator and needs to collect materials according to particle size classification, it should be shown in Figure 2, so that the small dust particle outlet pipe passes out of the cylinder and the outlet is arranged outside the cylinder to collect small particle materials. Otherwise, as shown in Figure 1, the dust inside and outside the filter cylinder can be collected together.

Claims (3)

1, a kind of efficient centrifugal deduster with filter screen, it is connect the cylindric cylindrical shell of a bit of conically shaped and small cylindrical tube by a bottom, one is installed in tangential direction cross section, cylindrical shell top is rectangular blast pipe, a cylindric exhaust duct and a composition such as plate that is installed in the little cylinder in cylindrical shell lower end that is installed in cylindrical shell upper surface middle position, it is characterized in that on cylindrical shell, being equipped with the circular arc handling door, in the exhaust duct lower end circle tube leaching net tube is installed, screen tube is fixed on conical flue-dust retainer upper end, the powered brush apparatus for ash has been installed in the screen tube below, insert in the hollow shaft upper end hole of powered brush apparatus for ash gear-box the lower end of flue-dust retainer, and the little grit outlet of pipe shape then is installed under the electronic brush dust organization gear case hollow shaft outside the stomidium.

2, the efficient centrifugal deduster of band filter screen according to claim 1, it is characterized in that screen tube covers on the cylindrical metal framework with screen cloth makes, the material aperture of screen cloth should be according to being cleared up dust character, content, granular size, and the temperature of medium, humidity, the factors such as requirement of acid-base value and dust removing effects are determined.

3, the efficient centrifugal deduster of band filter screen according to claim 1, it is characterized in that, the structure of powered brush apparatus for ash is as follows: a square box shape gear housing that is fixed on cylindrical shell lower central position, the large bevel gear that has a cone pinion that links to each other by the power transmission shaft reductor outer and one to be enclosed within on the hollow shaft in the casing and mesh with cone pinion with being installed in cylindrical shell, the brush board frame of doorframe shape is fixed on large bevel gear through on the upper surface beyond the gear housing, the strip hairbrush then is fixed on the brush board frame, and upper end, the hole of hollow shaft hollow links to each other with flue-dust retainer, and the lower end links to each other with little grit outlet.

Images