Three-stage dust collection system special for alternative fuel

Abstract

The utility model discloses a special three-stage dust collection system for alternative fuel, which belongs to the technical field of light floater collection and comprises a first-stage cyclone, a second-stage screen dust collector, a third-stage low-pressure pulse bag-type dust collector and a fan. Large-particle-size dust gas is filtered through first-stage cyclone dust removal, dust filtered in the first-stage cyclone dust removal is discharged through a shaftless reamer, and dust filtered in second-stage screen dust removal is discharged through a second-stage screen dust removal system and a spiral conveyor. The dust-containing gas subjected to secondary filtration is guided into the third-stage low-pressure pulse bag-type dust collector, the amount of dust needing to be removed by the third-stage low-pressure pulse bag-type dust collector is reduced, in addition, a plurality of filter bags are arranged on the third-stage low-pressure pulse bag-type dust collector, and the dust-containing gas is subjected to dust removal by utilizing the filter bags; and after dust removal, the blowing system is used for treating dust on the filter bag, so that the device has relatively good practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to light floating object collection technical field, specifically, it relates to a special three-stage dust collection system for alternative fuel. BACKGROUND

[0002] Alternative fuel is the form fuel made from industrial, agricultural and other waste through various processes, which replaces traditional energy by reducing the water content of waste garbage and increasing the heat value of products, and at the same time reduces the emission of pollutants to realize the transformation of waste into treasure. From the energy structure, alternative fuel, as a renewable energy with broad prospects, is made from solid waste, has similar combustion efficiency to fossil fuels, but has low carbon emissions, and is generally used in existing thermal power plants, thermal power plants, cement kilns for RDF / SRF coupled power generation, blending power generation, mixed combustion power generation and cement kiln co-processing to save costs for enterprises and contribute to environmental protection. When using alternative fuel, the dust-containing gas generated needs to be treated before being discharged. The existing dust removal unit mostly uses bag type dust removal. In order to ensure the effect of dust removal, a pulse blowing device for removing the filter bag is provided on the unit, but the existing pulse cleaning and filtration are carried out at the same time, which can cause the phenomenon of secondary adsorption of dust. Therefore, we propose a special three-stage dust collection system for alternative fuel, which is mainly suitable for collecting various light floating objects such as cotton dust, chemical fiber dust, plastic dust, waste paper dust, household garbage dust and wood dust generated during crushing or transportation. The system filters and collects fibers and dust in the airflow flowing through the system, purifies the air, and achieves the purpose of reuse or discharge. SUMMARY

[0003] In view of the problems mentioned in the above background art, the purpose of the present utility model is to provide a special three-stage dust collection system for alternative fuel.

[0004] To solve the above problems, the utility model adopts the following technical scheme:

[0005] A special three-stage dust collection system for alternative fuel, comprising a first-stage cyclone, a second-stage screen dust removal, a third-stage low-pressure pulse bag dust collector and a fan, the inlet of the first-stage cyclone is connected with each dust collection point through a pipeline, the outlet of the first-stage cyclone is connected with the inlet of the second-stage screen dust removal, the waste gas outlet of the second-stage screen dust removal is connected with the inlet of the third-stage low-pressure pulse bag dust collector, and the outlet of the third-stage low-pressure pulse bag dust collector is connected with the input end of the fan.

[0006] As a preferred scheme of the utility model, the first-stage cyclone comprises a cyclone volute, an outer cylinder, an inner cylinder, an axleless reamer, the inlet of the cyclone volute is connected with the dust collection point, and the inner cylinder discharges the dust separated from the dust-containing gas through the axleless reamer.

[0007] As a preferred scheme of the utility model, the second stage screen dust removal includes a shell, a screen driving system, a screen dust removal system and a screw conveyor, dust-containing gas enters the inner screen driving system of the shell after the first stage cyclone, and the screen dust removal system separates and discharges the dust attached to the screen driving system through the screw conveyor.

[0008] As a preferred scheme of the utility model, the third stage low pressure pulse cloth bag dust collector includes a box body and a spraying system, a plurality of filter bags are arranged in the box body, dust-containing gas enters the box body after the third stage low pressure pulse cloth bag dust collector, and the spraying system separates and discharges the dust attached to the filter bags through the screw conveyor.

[0009] As a preferred scheme of the utility model, the top inlet of the shell and the top outlet of the inner cylinder are connected through a pipeline.

[0010] As a preferred scheme of the utility model, the inlet of the box body and the side outlet of the shell are connected through a pipeline.

[0011] The utility model has the advantages of:

[0012] In the utility model, the dust-containing gas is filtered twice through the first stage cyclone and the second stage screen dust removal, the dust filtered in the first stage cyclone is discharged through the shaftless reamer, the dust filtered in the second stage screen dust removal is discharged through the screen dust removal system and the screw conveyor, and the dust-containing gas filtered twice is introduced into the third stage low pressure pulse cloth bag dust collector, so that the dust removal amount of the third stage low pressure pulse cloth bag dust collector is reduced, a plurality of filter bags are arranged on the third stage low pressure pulse cloth bag dust collector, the dust-containing gas is removed through the filter bags, the dust on the filter bags is treated through the spraying system after dust removal, the defect that the dust is adsorbed twice when the ash removal and filtration are simultaneously performed in the ordinary bag type dust removal spraying pulse is overcome, and the utility model has good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic view of the utility model;

[0014] Figure 2 It is the overhead schematic view of the utility model;

[0015] Figure 3 It is the front schematic view of the utility model;

[0016] Figure 4 It is the side schematic view of the utility model;

[0017] Figure 5 It is the structure schematic view of the first stage cyclone of the utility model;

[0018] Figure 6 It is the structure schematic view of the second level screen mesh dust removal of the utility model;

[0019] Figure 7 It is the structure schematic view of the screen mesh driving system of the utility model;

[0020] Figure 8 It is the side schematic view of the second level screen mesh dust removal of the utility model;

[0021] Figure 9 It is the structure schematic view of the screen mesh dust removal system of the utility model;

[0022] Figure 10 It is the structure schematic view of the third level low pressure pulse cloth bag dust collector of the utility model.

[0023] Mark explanation in drawing:

[0024] 1, first level cyclone; 2, second level screen mesh dust removal; 3, third level low pressure pulse cloth bag dust collector; 4, fan; 5, cyclone volute; 6, outer cylinder; 7, inner cylinder; 8, shaftless reamer; 9, shell; 10, screen mesh driving system; 11, screen mesh dust removal system; 12, screw conveyor; 13, box; 14, injection system. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it is to explain, unless another explicit provision and limitation, the term "installation", "set with", "sleeve set / interface", "connection" and the like, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0028] Embodiment:

[0029] Please refer to Figures 1-10 , a kind of special three-stage dust collection system of alternative fuel, including first stage cyclone 1, second stage screen dust removal 2, third stage low pressure pulse cloth bag dust collector 3 and fan 4, the inlet of first stage cyclone 1 is connected by pipeline and each dust collection point, the outlet of first stage cyclone 1 and the inlet of second stage screen dust removal 2 are connected, the exhaust gas outlet of second stage screen dust removal 2 and the inlet of third stage low pressure pulse cloth bag dust collector 3 are connected, the outlet of third stage low pressure pulse cloth bag dust collector 3 and the input end of fan 4 are connected.

[0030] Specifically, please refer to Figure 1 And Figure 5 , first stage cyclone 1 includes cyclone volute 5, outer cylinder 6, inner cylinder 7, shaftless reamer 8, the inlet of cyclone volute 5 is connected with dust collection point, and the dust separated by inner cylinder 7 from dust-containing gas is discharged outside by shaftless reamer 8.

[0031] In the embodiment, the lower part of outer cylinder 6 is provided with a cone, and the shaftless reamer 8 is arranged at the lower part of the cone, so that the dust in the outer cylinder 6 can be discharged conveniently, and in addition, a frame is arranged on the outer side of the outer cylinder 6 for supporting the outer cylinder 6.

[0032] Specifically, please refer to Figure 1 、 Figure 6 、 Figure 7 、 Figure 8 And Figure 9 , second stage screen dust removal 2 includes shell 9, screen driving system 10, screen dust removal system 11 and screw conveyor 12, after the dust-containing gas passes through first stage cyclone 1, it enters the inner screen driving system 10 of shell 9, and the dust attached to the screen driving system 10 is separated and cleaned by the screen dust removal system 11 and discharged outside by the screw conveyor 12.

[0033] In the embodiment, the screen driving system 10 comprises a rotating roller, a filter screen belt and a driving motor, the rotating roller is used to support the filter screen belt, the filter screen belt is used to filter dust, the driving motor is used to drive the filter screen belt to rotate, and the position of the filter screen belt for filtering gas is changed, the screen dust removal system 11 comprises a driving motor and a cleaning roller, the driving motor is used to drive the cleaning roller to rotate, so that the dust on the filter screen belt is cleaned, the dust cleaned is discharged by the screw conveyor 12, the inner part of the shell 9 is provided with a flow guide plate and an inner sealing plate, which are used to guide the dust-containing gas to enter from the upper part and to be discharged from the side to enter the third-stage low-pressure pulse bag-type dust collector 3 through a horn.

[0034] Specifically, please refer to Figure 1 and Figure 10 , the third-stage low-pressure pulse bag-type dust collector 3 comprises a box body 13 and a blowing system 14, a plurality of filter bags are arranged in the box body 13, after the dust-containing gas passes through the third-stage low-pressure pulse bag-type dust collector 3, the dust adhered to the filter bags is separated and cleaned by the blowing system 14 through the screw conveyor and is discharged.

[0035] In the embodiment, the filter bag is used to filter the dust-containing gas for the third time.

[0036] Specifically, please refer to Figure 1 、 Figure 5 and Figure 6 , the top inlet of the shell 9 and the top outlet of the inner cylinder 7 are connected by a pipeline.

[0037] In the embodiment, the dust-containing gas in the inner cylinder 7 is guided into the shell 9 by the pipeline to be filtered for the second time.

[0038] Specifically, please refer to Figure 1 、 Figure 6 and Figure 10 , the inlet of the box body 13 and the side outlet of the shell 9 are connected by a pipeline.

[0039] In the embodiment, the dust-containing gas in the shell 9 is guided into the box body 13 by the pipeline to be filtered for the third time.

[0040] Working principle: when using, first start the fan 4 to draw air from the box 13, use the pipeline, shell 9, cyclone 5, outer cylinder 6, inner cylinder 7 to make the inlet of cyclone 5 to suck the dust-containing gas at the dust collection point into the first stage cyclone 1, use the first stage cyclone 1 to filter the dust in the dust-containing gas for the first time, in addition, the first stage cyclone 1 is provided with an unshafted conveyor at the bottom, after the large block of fiber and impurities in the mixed dust-containing air filtered by the first stage cyclone 1 are separated and collected, they are conveyed out through the unshafted reamer 8, then the dust-containing gas is guided into the shell 9 from the top air outlet of the inner cylinder 7, is introduced from the upper part in the shell 9 through the guide plate and inner sealing plate, is introduced into the third stage low pressure pulse bag type dust collector 3 through the horn, at the same time, the dust in the dust-containing gas is filtered for the second time through the filter screen in the screen driving system 10, the dust on the filter screen is cleaned down through the screen dust removal system 11, the dust separated and cleaned is discharged through the screw conveyor 12, then the dust-containing gas enters the third stage low pressure pulse bag type dust collector 3, the dust-containing gas is filtered for the third time through the filter bag, the dust-containing air is fine filtered to reach the discharge standard in the third stage low pressure pulse bag type dust collector 3, finally, the qualified gas is discharged through the fan 4, that is,

[0041] The dust removal unit overcomes the defects that the dust removal and the blowing pulse cleaning are simultaneously performed to cause the secondary dust adsorption phenomenon of the ordinary bag type dust removal, and the three-stage dust collection system special for the alternative fuel is mainly suitable for collecting various light floating matters, such as cotton dust, chemical fiber dust, plastic dust, waste paper dust, domestic waste dust, wood dust and the like, filters and collects the fiber and dust in the air flow passing through the unit, purifies the air, so as to achieve the purpose of reuse or discharge.

[0042] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A three-stage dust collection system for alternative fuels, characterized by: It includes first stage cyclone (1), second stage screen dust removal (2), third stage low pressure pulse cloth bag dust collector (3) and fan (4), the inlet of first stage cyclone (1) is connected through pipeline and each dust collection point, the outlet of first stage cyclone (1) is connected with the inlet of second stage screen dust removal (2), the exhaust gas outlet of second stage screen dust removal (2) is connected with the inlet of third stage low pressure pulse cloth bag dust collector (3), the outlet of third stage low pressure pulse cloth bag dust collector (3) is connected with the input end of fan (4); The first stage cyclone (1) includes cyclone volute (5), outer cylinder (6), inner cylinder (7), shaftless reamer (8), the inlet of cyclone volute (5) is connected with dust collection point, the inner cylinder (7) is connected with dust removal point, and the dust separated from dust-containing gas is discharged through shaftless reamer (8); The second stage screen dust removal (2) includes shell (9), screen driving system (10), screen dust removal system (11) and screw conveyor (12), dust-containing gas enters the inner screen driving system (10) of shell (9) after the first stage cyclone (1), and the screen dust removal system (11) separates and discharges the dust attached to the screen driving system (10) through the screw conveyor (12); The third stage low pressure pulse cloth bag dust collector (3) includes box (13) and blowing system (14), a plurality of filter bags are arranged in the box (13), dust-containing gas enters the box (13) after the third stage low pressure pulse cloth bag dust collector (3), and the blowing system (14) separates and discharges the dust attached to the filter bag through the screw conveyor.

2. A three-stage dust collection system for alternative fuels as claimed in claim 1, wherein: The top inlet of shell (9) is connected with the top outlet of inner cylinder (7) through pipeline.

3. A three-stage dust collection system for alternative fuel applications as claimed in claim 1 wherein: The inlet of box (13) is connected with the side outlet of shell (9) through pipeline.

Images