On-line deashing cloth bag type dust removal system

Abstract

A pressure reducing device is arranged on the left side of a coal falling pipe, a backflow pressure reducing device is communicated with a material guide groove, a dust remover is arranged at the front end of the material guide groove, a wall-mounted anti-explosion electric cabinet is electrically connected with an axial flow fan, a dust collection liftable sealing soft curtain is arranged on the front end of the material guide groove, and a material guide groove support is arranged below the material guide groove. And the axial flow fan is arranged at the tail end of the guide chute. Compared with the prior art, the utility model has the advantages of simple and compact structure and reasonable arrangement. The size is small and the operation cost is low. On-line ash removal is achieved, and secondary conveying and cleaning are avoided. And the filter cartridge is long in service life and stable and reliable in operation. Flying dust at the tail reversing roller is sucked into the material guide groove through the axial flow fan, dust falling treatment is conducted through the dust removal equipment at the front end of the material guide groove, and a dust remover is omitted.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to an online dust cleaning bag type dust removal system. Background Art

[0002] With the continuous upgrading and transformation of mining, metallurgy, electricity, and chemical equipment, belt conveyors came into being. In the process of transporting materials, due to the reversing of transportation, the landing point of the belt conveyor has a height difference, which causes the impact of materials to generate dust. With the progress of human civilization, higher requirements are put forward for the production environment. Especially in recent years, the emission standards have been improved. Dust removal technology was born in the 19th century, including sedimentation chamber, cyclone dust removal, bag dust removal, and electric dust removal. On this basis, various forms of dust collectors, multi-tube, electric dust collector, water film dust collector, etc. have been derived.

[0003] The original dust removal system uses a centralized bag dust removal system, which has its drawbacks. The main problem is that the dust collection pipe is easy to be blocked. Due to the accumulation of dust in the dust collection pipe, it is easy to accumulate at the elbow, and the pipe will be blocked over time. In addition, the dust collection efficiency will be affected because some dust collection pipes are arranged too long. To address this problem, we directly arrange the dust collector on the guide trough, so that the dust-containing gas can be directly filtered to avoid accumulation and blockage. Utility Model Content

[0004] The purpose of the utility model is to solve the dust generated by the drop caused by reversing when conveying materials on a belt conveyor and the dust generated by the material sticking to the reversing roller at the tail of the belt conveyor. In view of the dust at the drop point, a reasonable material guide trough is made according to the actual situation on site, so that the dust generated by the impact cannot overflow the material guide trough, and the reasonable size and geometric shape are designed according to the dust concentration on site. In order to further reduce the gas pressure in the material guide trough, a pressure relief device and a reflux device are installed on the material guide trough. A micro-power cloth or dust collector is installed at the outlet of the material guide trough, and a dust collection device is installed at the reversing filter cartridge at the tail of the machine to suck the dust-containing gas into the material guide trough, so that there is no dust overflow and dust in the environment, and the working environment is hygienic.

[0005] Bag dust collector is an efficient and environmentally friendly equipment for treating air pollutants. It is an important equipment for purifying fine particles and ultra-low emissions. The bag dust collector is the most widely used environmental protection equipment among various dust removal equipment. Whether the bag dust collector is well designed and manufactured, and whether it is properly used and maintained, directly affects the dust removal effect of the dust removal project.

[0006] The utility model provides an online dust cleaning bag type dust removal system, which is characterized in that: the online dust cleaning bag type dust removal system comprises: a pressure reducing device 1, a coal drop pipe 2, a reflux pressure reducing device 3, a material guide chute 4, a dust collector 5, a wall-mounted explosion-proof electric control box 6, a dust suction lifting and sealing soft curtain 7, a material guide chute support 8, and an axial flow fan 9;

[0007] Among them: the pressure reducing device 1 is arranged on the left side of the coal dropping pipe 2, the pressure reducing device 1 is arranged on the upper cover plate of the material guide trough 4 and is connected with the material guide trough, the reflux pressure reducing device 3 is connected with the material guide trough 4, the dust collector 5 is arranged at the front end of the material guide trough 4, the wall-mounted explosion-proof electric control box 6 is electrically connected with the axial flow fan 9, the dust suction liftable sealed soft curtain 7 is arranged on the front end of the material guide trough 4, the material guide trough support 8 is arranged below the material guide trough 4, and the axial flow fan 9 is arranged at the tail end of the material guide trough 4.

[0008] Dust-absorbing and elevating sealing soft curtains 7 are installed at both ends of the guide trough 4 to effectively suppress the spillage of dust. The PLC automatic spraying control device is adopted to realize automatic detection and automatic spraying operation of the dust collector.

[0009] The dust-laden gas forms a circulating flow in the reflux pipe, which reduces the velocity of the dust-laden gas and causes the dust particles to settle into the guide trough under the action of gravity.

[0010] The structure of the reflux pressure reducing device 3 is that the lower part is in a cover shape and the upper part is in a bent cylindrical structure.

[0011] A coal conveying belt is arranged in the guide trough 4, and the back side of the belt is covered with a granular structure.

[0012] The dust collector 5 is provided with a plurality of filter cartridges or filter bags. When the dust-laden gas passes through the filter cartridges or filter bags, the dust is retained on the surface of the filter cartridges or filter bags, and the purified gas is discharged through the fan.

[0013] When the dust on the filter cartridge or filter bag surface increases and the running resistance value or time control reaches the preset value, the spray control system sends a signal, and the pulse spray system controlled by the PLC automatically sprays the filter cartridge or filter bag. Under the strong force of compressed air, the dust attached to the filter cartridge or filter bag falls off and falls directly onto the belt. The automatic spray cycle can be adjusted according to the dust concentration and operating requirements, so that the filter cartridge or filter bag can always maintain good filtering performance.

[0014] The dust collector 5 is provided with a plurality of filter cartridges or filter bags. When the dust-laden gas passes through the filter cartridges or filter bags, the dust is retained on the surface of the filter cartridges or filter bags, and the purified gas is discharged through the fan.

[0015] When the dust on the filter cartridge or filter bag surface increases and the running resistance value or time control reaches the preset value, the spray control system sends a signal, and the pulse spray system controlled by the PLC automatically sprays the filter cartridge or filter bag. Under the strong force of compressed air, the dust attached to the filter cartridge or filter bag falls off and falls directly onto the belt. The automatic spray cycle can be adjusted according to the dust concentration and operating requirements, so that the filter cartridge or filter bag can always maintain good filtering performance.

[0016] During the coal conveying process, there is a height difference between the front belt and the rear belt head and tail, which will generate dust. The online cleaning bag dust removal system is used to reduce the dust.

[0017] The particles covered on the back of the belt are rolled and pressed at the reversing roller at the tail of the machine, repeatedly generating dust here. The axial flow fan 9 is provided at the tail roller of the guide trough 4 to suck the dust at the tail of the machine into the guide trough 4.

[0018] The dust-containing gas is sucked into the guide trough, which directly reduces the dust concentration of the ambient gas. In the past, to deal with such problems, either a dust collector was added outside the tail of the machine, or a dry fog spray system was added. Both methods would increase the equipment cost and the cost of daily operation and maintenance. However, we have added an axial flow fan and a dust suction duct here, and directly arranged the dust suction port at the dust point of the reversing filter cartridge field, directly sucking the dust-containing gas into the guide trough, and using the dust collector at the front end of the guide trough to process the dust-containing gas, which directly reduces the equipment cost and the cost of daily operation and maintenance.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The structure is simple and compact, and the layout is reasonable. The volume is small and the operation cost is low. The dust is cleaned online to avoid secondary conveying and cleaning. The filtering area is large, the dust removal efficiency is high, the filter cartridge has a long service life, and the operation is stable and reliable. The dust at the reversing drum at the tail of the machine is sucked into the guide trough by the axial flow fan, and the dust removal equipment at the front end of the guide trough is used for dust reduction treatment, which saves a dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described in detail below with reference to the accompanying drawings and implementation modes:

[0022] Figure 1 This is a schematic diagram of an online dust cleaning bag type dust removal system;

[0023] Figure 2 This is a schematic diagram of direction A. DETAILED DESCRIPTION

[0024] The present invention will be further explained below in conjunction with a specific implementation scheme, but the present invention is not limited thereto. The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the restrictive conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship, or adjustment of size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0025] Example 1

[0026] The present embodiment provides an online dust cleaning bag type dust removal system, characterized in that: the online dust cleaning bag type dust removal system comprises: a pressure reducing device 1, a coal drop pipe 2, a reflux pressure reducing device 3, a material guide chute 4, a dust collector 5, a wall-mounted explosion-proof electric control box 6, a dust suction liftable sealed soft curtain 7, a material guide chute support 8, and an axial flow fan 9;

[0027] Among them: the pressure reducing device 1 is arranged on the left side of the coal dropping pipe 2, the pressure reducing device 1 is arranged on the upper cover plate of the material guide trough 4 and is connected with the material guide trough, the reflux pressure reducing device 3 is connected with the material guide trough 4, the dust collector 5 is arranged at the front end of the material guide trough 4, the wall-mounted explosion-proof electric control box 6 is electrically connected with the axial flow fan 9, the dust suction liftable sealed soft curtain 7 is arranged on the front end of the material guide trough 4, the material guide trough support 8 is arranged below the material guide trough 4, and the axial flow fan 9 is arranged at the tail end of the material guide trough 4.

[0028] Dust-absorbing and elevating sealing soft curtains 7 are installed at both ends of the guide trough 4 to effectively suppress the spillage of dust. The PLC automatic spraying control device is adopted to realize automatic detection and automatic spraying operation of the dust collector.

[0029] The dust-laden gas forms a circulating flow in the reflux pipe, which reduces the velocity of the dust-laden gas and causes the dust particles to settle into the guide trough under the action of gravity.

[0030] The structure of the reflux pressure reducing device 3 is that the lower part is in a cover shape and the upper part is in a bent cylindrical structure.

[0031] A coal conveying belt is arranged in the guide trough 4, and the back side of the belt is covered with a granular structure.

[0032] During the coal conveying process, there is a height difference between the front belt and the rear belt head and tail, which will generate dust. The online cleaning bag dust removal system is used to reduce the dust.

[0033] The particles covered on the back of the belt are rolled and pressed at the reversing roller at the tail of the machine, repeatedly generating dust here. The axial flow fan 9 is provided at the tail roller of the guide trough 4 to suck the dust at the tail of the machine into the guide trough 4.

[0034] The dust-containing gas is sucked into the guide trough, which directly reduces the dust concentration of the ambient gas. In the past, to deal with such problems, either a dust collector was added outside the tail of the machine, or a dry fog spray system was added. Both methods would increase the equipment cost and the cost of daily operation and maintenance. However, we have added an axial flow fan and a dust suction duct here, and directly arranged the dust suction port at the dust point of the reversing filter cartridge field, directly sucking the dust-containing gas into the guide trough, and using the dust collector at the front end of the guide trough to process the dust-containing gas, which directly reduces the equipment cost and the cost of daily operation and maintenance.

[0035] Example 2

[0036] The present embodiment provides an online dust cleaning bag type dust removal system, characterized in that: the online dust cleaning bag type dust removal system comprises: a pressure reducing device 1, a coal drop pipe 2, a reflux pressure reducing device 3, a material guide chute 4, a dust collector 5, a wall-mounted explosion-proof electric control box 6, a dust suction liftable sealed soft curtain 7, a material guide chute support 8, and an axial flow fan 9;

[0037] Among them: the pressure reducing device 1 is arranged on the left side of the coal dropping pipe 2, the reflux pressure reducing device 3 is connected with the material guide chute 4, the dust collector 5 is arranged at the front end of the material guide chute 4, the wall-mounted explosion-proof electric control box 6 is electrically connected with the axial flow fan 9, the dust suction liftable sealed soft curtain 7 is arranged on the front end of the material guide chute 4, the material guide chute support 8 is arranged below the material guide chute 4, and the axial flow fan 9 is arranged at the tail end of the material guide chute 4.

[0038] Dust-absorbing and elevating sealing soft curtains 7 are installed at both ends of the guide trough 4 to effectively suppress the spillage of dust. The PLC automatic spraying control device is adopted to realize automatic detection and automatic spraying operation of the dust collector.

[0039] The structure of the reflux pressure reducing device 3 is that the lower part is in a cover shape and the upper part is in a bent cylindrical structure.

[0040] A coal conveying belt is arranged in the guide trough 4, and the back side of the belt is covered with a granular structure.

[0041] The dust collector 5 is provided with a plurality of filter cartridges or filter bags. When the dust-laden gas passes through the filter cartridges or filter bags, the dust is trapped on the surface of the filter cartridges or filter bags, and the purified gas is discharged through the fan.

[0042] When the dust on the filter cartridge or filter bag surface increases and the running resistance value or time control reaches the preset value, the spray control system sends a signal, and the pulse spray system controlled by the PLC automatically sprays the filter cartridge or filter bag. Under the strong force of compressed air, the dust attached to the filter cartridge or filter bag falls off and falls directly onto the belt. The automatic spray cycle can be adjusted according to the dust concentration and operating requirements, so that the filter cartridge or filter bag can always maintain good filtering performance.

[0043] During the coal conveying process, there is a height difference between the front belt and the rear belt head and tail, which will generate dust. The online cleaning bag dust removal system is used to reduce the dust.

[0044] The particles covered on the back of the belt are rolled and pressed at the reversing roller at the tail of the machine, repeatedly generating dust here. The axial flow fan 9 is provided at the tail roller of the guide trough 4 to suck the dust at the tail of the machine into the guide trough 4.

[0045] The dust-containing gas is sucked into the guide trough, which directly reduces the dust concentration of the ambient gas. In the past, to deal with such problems, either a dust collector was added outside the tail of the machine, or a dry fog spray system was added. Both methods would increase the equipment cost and the cost of daily operation and maintenance. However, we have added an axial flow fan and a dust suction duct here, and directly arranged the dust suction port at the dust point of the reversing filter cartridge field, directly sucking the dust-containing gas into the guide trough, and using the dust collector at the front end of the guide trough to process the dust-containing gas, which directly reduces the equipment cost and the cost of daily operation and maintenance.

[0046] Matters not covered in this utility model are known technologies.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online dust cleaning bag type dust removal system, characterized in that: The online dust cleaning bag-type dust removal system comprises: a pressure reducing device (1), a coal drop pipe (2), a reflux pressure reducing device (3), a material guide chute (4), a dust collector (5), a wall-mounted explosion-proof electric control box (6), a dust suction liftable sealed soft curtain (7), a material guide chute support (8), and an axial flow fan (9); Wherein: the pressure reducing device (1) is arranged on the cover plate on the material guide trough (4) and is connected to the material guide trough, the reflux pressure reducing device (3) is connected to the material guide trough (4), the dust collector (5) is arranged at the front end of the material guide trough (4), the wall-mounted explosion-proof electric control box (6) is electrically connected to the axial flow fan (9), the dust suction liftable sealed soft curtain (7) is arranged above the front end of the material guide trough (4), a material guide trough support (8) is arranged below the material guide trough (4), and the axial flow fan (9) is arranged at the rear end of the material guide trough (4).

2. The online dust cleaning bag type dust removal system according to claim 1 is characterized in that: The structure of the reflux pressure reducing device (3) is that the lower part is hood-shaped and the upper part is a bent cylindrical structure; the dust-containing gas forms a circulating flow in the reflux pipe, which reduces the flow rate of the dust-containing gas, causing the dust particles to settle into the guide trough under the action of gravity.

3. The online dust cleaning bag type dust removal system according to claim 1 is characterized in that: A coal conveying belt is arranged in the guide trough (4), and the back side of the belt is covered with a granular structure.

4. The online dust cleaning bag type dust removal system according to claim 1 is characterized in that: The dust collector (5) is provided with a plurality of filter cartridges or filter bags. When the dust-containing gas passes through the filter cartridges or filter bags, the dust is retained on the surface of the filter cartridges or filter bags, and the purified gas is discharged through the fan.

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