CN201618621U

CN201618621U - Cyclone centrifugal dust collection device

Info

Publication number: CN201618621U
Application number: CN2010201470957U
Authority: CN
Inventors: 徐建华; 黄俊强; 朱宁; 张时英; 郑伟新
Original assignee: Liyang Zhengchang Drying Equipment Co Ltd
Current assignee: Liyang Zhengchang Drying Equipment Co Ltd
Priority date: 2010-03-07
Filing date: 2010-03-07
Publication date: 2010-11-03
Anticipated expiration: 2020-03-07

Abstract

The utility model provides a cyclone centrifugal dust collection device belonging to the field of air purification equipment. The dust collection device mainly comprise a gas intake pipe, a flow guide plate, a gas storage tank, a support, an impeller, a motor, a tapered cylinder, a volute casing, an exhaust pipe, a cyclone dust collector, a circulated gas pipe and a control valve, wherein the gas storage tank is a cylindrical drum, the gas intake pipe is communicated with the lower end of the cylindrical drum, the flow guide plate is arranged on the inner wall of the cylindrical drum, the support is arranged at the upper end of the cylindrical drum, the motor is mounted on the support, the impeller is arranged on the shaft of the motor, the upper end of the gas storage tank is communicated with the tapered cylinder, the upper end of the tapered cylinder is communicated with the volute casing, the upper side of the volute casing is communicated with the exhaust pipe, the lateral outlet of the volute casing is connected with the gas inlet of the cyclone dust collector, the gas outlet of the cyclone dust collector is connected with the circulated gas pipe, the other end of the circulated gas pipe is connected with the gas intake pipe, and the control valve is arranged inside the circulated gas pipe. The structure makes full use of the rotational flow velocity of the fan impeller to collect the dust inside the volute casing and then deliver the dust to the cyclone dust collector for dust removal, thereby increasing the dust removal efficiency. The cyclone centrifugal dust collection device is patricianly applied to removal of the dust from the high-flow gas.

Description

Whirlwind centrifugal dust-removing device

Affiliated technical field

The utility model relates to a kind of air cleaning unit, and a kind of more precisely whirlwind centrifugal dust-removing device belongs to the fluid machinery technical field.

Background technology

In the drying system of grain industry, the dryer discharge tail gas contains more impurity, dust and earth, all is directly to be emitted in the atmosphere in the past usually, stirs up a cloud of dust thereby make in the air, and dust is all over the sky, severe contamination environment.Environmental Safety more seems particularly important in modern industrial production, and this situation must be carried out dust removal process.The method of dedusting is a lot: the expansion chamber dedusting, though simple in structure, its occupation of land is bigger, invests morely, and also exists secondary pollution problem; Bag-type dusting though efficiency of dust collection is higher, needs often to change cloth bag, wastes bigger; Electrostatic precipitation though there is not noise, also exists the emission problem of dust, and the expense costliness; The most frequently used cyclone dust removal at present, though it is simple in structure, expense is not high yet, efficient is not low yet, but it is applicable to the occasion that the contamination gas flow is less, and the flow of the tail gas of dryer, generally all bigger, so just force the volume of cyclone dust collectors to increase thereupon, expense also increases thereupon.

Summary of the invention

In order to overcome the deficiency of above-mentioned various dust collection methods, the utility model provide a kind of simple in structure, efficiency of dust collection is high, expense is low, is applicable to the whirlwind centrifugal dust-removing device of the dryer tails dedusting of big flow again.

The technical scheme that the utility model adopted is such: whirlwind centrifugal dust-removing device mainly is made up of air inlet pipe, deflector, expansion box, support, impeller, motor, conically shaped, volute, blast pipe, cyclone dust collectors, circulation airduct and control valve.Expansion box is a cylindrical tube, the lower end is connecting air inlet pipe, its cylinder inboard wall is provided with deflector, its upper end is provided with support, motor cabinet drops on the support, impeller is installed on the motor shaft, the upper end of expansion box communicates with conical shell, the upper end of conical shell communicates with volute, top and the blast pipe of volute communicates, the side of volute joins along the outlet of tangent to periphery direction and the air inlet of cyclone dust collectors, and the gas outlet of cyclone dust collectors and circulation airduct join, and the other end and the air inlet pipe of circulation airduct are joined, in the circulation airduct, control valve is set, be used to regulate the wind speed of cyclone dust collectors gas outlet, excessive to prevent wind speed, and take the laying dust in the taper dust hopper of cyclone dust collectors out of cyclone dust collectors.

Above-mentioned volute and conically shaped, motor, impeller, expansion box should be coaxial lines, and its bore diameter of outer ring should be than the big 10～30cm of internal diameter of conically shaped upper end, and external diameter of ring should be used for control of dust less than the internal diameter 6～12cm of conically shaped upper end in it.The direction of rotation of impeller should be consistent with the direction of rotation in the cyclone.

Above-mentioned deflector has 3～6, all becomes 35 °～40 ° angle with horizontal plane, is distributed on the inwall of expansion box cylindrical shell, and the direction of its water conservancy diversion should be consistent with the direction of rotation of impeller.

The course of work of whirlwind centrifugal dust-removing device is such: the tail gas of dryer enters expansion box from air inlet pipe through deflector, the rotation of driven by motor impeller, thereby drive tail gas is pressed the water conservancy diversion direction and do rotation at a high speed in expansion box, impurity in the tail gas, dust is because action of centrifugal force is got rid of the inwall to conically shaped, impurity, dust is under the promotion of whirlwind, move along the conically shaped inwall is bottom-up, in the assorted groove of the collection that enters volute, just send into cyclone dust collectors then by whirlwind, carry out the dedusting second time, the tail gas of tail gas behind first time centrifugal dust-removing is just in large quantities by emission by exhaust pipe; Tail gas after the cyclone dust collectors dedusting is for the second time sent into air inlet pipe again through the circulation airduct, for avoiding cyclone dust collectors gas outlet wind speed excessive, causes taking the laying dust in the taper dust hopper of cyclone dust collectors out of cyclone dust collectors, so control valve is set in circulation pipe; Dust is discharged by airlock in the taper dust hopper of last cyclone dust collectors.

Hence one can see that: whirlwind centrifugal dust-removing apparatus structure is simple, reaches the purpose that purifies air through twice dedusting, is particularly useful for the dedusting of the dryer tail gas of big flow.Because of entering the tail gas that cyclone dust collectors carry out dedusting for the second time, only be the seldom part of former dryer tail gas in the dedusting first time remains in the volute groove dirt tail gas arranged, other most tail gas was discharged by blast pipe behind the centrifugal dust-removing through the first time, so, the volume of cyclone dust collectors does not just need to increase, increase investment cost and also just be out of use not only economy but also practicality.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

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

Fig. 2 is the vertical view of Fig. 1.

Among the figure: 1, air inlet pipe, 2, deflector, 3. expansion box, 4, support, 5, impeller, 6, motor, 7, conically shaped, 8, volute, 9, blast pipe, 10, cyclone dust collectors, 11, the circulation airduct, 12, control valve.

The specific embodiment

As Fig. 1, shown in Figure 2, whirlwind centrifugal dust-removing device mainly is made up of air inlet pipe 1, deflector 2, expansion box 3, support 4, impeller 5, motor 6, conically shaped 7, volute 8, blast pipe 9, cyclone dust collectors 10, circulation airduct 11 and control valve 12.They all are connected air inlet pipe 1, expansion box 3, conically shaped 7, volute 8, blast pipe 9 and volute 8, cyclone dust collectors 10, circulation airduct 11, air inlet pipe with screw nut with ring flange to each other; 3 deflectors 2 become with horizontal plane on the uniform inwall that is welded on expansion box 3 in 37 ° of angles, support 4 is welded on the upper end of expansion box 3, motor 6 usefulness screws, fixed by nut are on support 4, and impeller 5 is installed on the axle of motor 6, and a control valve 12 is installed in circulation airduct 11.

Claims

1. whirlwind centrifugal dust-removing device, it is characterized in that: it mainly is made up of air inlet pipe, deflector, expansion box, support, impeller, motor, conically shaped, volute, blast pipe, cyclone dust collectors, circulation airduct and control valve; Expansion box is a cylindrical tube, and its inwall is provided with deflector, and the cylindrical shell lower end connects air inlet pipe, and the upper end is provided with support, and communicates with conically shaped, and motor cabinet drops on the support; Impeller is installed in motor shaft, the upper end of conically shaped communicates with volute, top and the blast pipe of volute communicates, the side of volute joins along the outlet of tangent to periphery direction and the air inlet of cyclone dust collectors, the gas outlet of cyclone dust collectors and circulation airduct join, the other end and the air inlet pipe of circulation airduct are joined, and in the circulation airduct control valve are set.

2. whirlwind centrifugal dust-removing device according to claim 1, it is characterized in that: volute and conically shaped, motor, impeller, expansion box should be coaxial lines, its bore diameter of outer ring should be than the big 10～30cm of internal diameter of conically shaped upper end, external diameter of ring should be less than the internal diameter 6～12cm of conical shell upper end in it, and the direction of rotation of impeller should be consistent with the direction of rotation in the cyclone dust collectors.

3. whirlwind centrifugal dust-removing device according to claim 1 is characterized in that: deflector has 3～6, all becomes 35 °～40 ° angle with horizontal plane, is distributed on the inwall of expansion box, and the direction of its water conservancy diversion should be consistent with the direction of rotation of impeller.