Novel micro-power dust falling and material guiding device and using method

Abstract

The invention discloses a novel micro-power dust falling and material guiding device and a using method, and belongs to the technical field of material conveying equipment. The device comprises a material guide groove, material falling bins, a backflow mechanism and a micro-power dust remover, a head sealing mechanism is arranged at one end of the material guide groove, the multiple material falling bins are fixedly installed at the top of the material guide groove, outlets of the material falling bins communicate with the material guide groove, and the micro-power dust remover communicates with the material guide groove. The right side of each blanking bin is communicated with the guide chute through a backflow mechanism, the micro-power dust remover is fixedly mounted at the tail part of the guide chute, and an air inlet of the micro-power dust remover is communicated with the guide chute. According to the micro-power dust falling and material guiding device, the unique dust falling chamber and backflow pipe mode is adopted, the dust remover box body is directly arranged on the material guiding groove, the requirements for dust falling and pressure relief are completely met, micro-power is truly achieved, no workload is increased, the device is free of maintenance management and low in operation cost, and energy and manpower can be saved through micro-power dust removal.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying equipment, and in particular to a novel micro-power dust reduction and material guiding device and a use method thereof. Background Art

[0002] Belt conveyors are commonly used in thermal power plants to transport coal. In the existing conveying system, there are dust collectors and other equipment, which have the disadvantages of large floor space, high water and power consumption, high maintenance costs, and large labor workload. In addition, due to the sealing and dust removal effect of bag dust collectors, a large amount of dust is generated at the transfer station, causing serious pollution to the working environment and endangering human health. At the same time, if the accumulated dust is not cleaned up in time, it is very easy to cause spontaneous combustion of the accumulated dust and cause a fire. Therefore, dust pollution control in the coal transportation system of power plants is particularly important. Summary of the invention

[0003] In order to solve the above technical problems, a new type of micro-power dust reduction and material guiding device and its use method are provided. This technical solution solves the problem proposed in the above background technology that the coal conveyor belt will generate dust during the coal conveying process, affecting the workshop environment and the health of workers.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is: a new type of micro-powered dust reduction and material guiding device is provided, including a material guiding trough, a material dropping bin, a reflux mechanism and a micro-powered dust collector, a head sealing mechanism is provided at one end of the material guiding trough, a plurality of the material dropping bins are fixedly installed on the top of the material guiding trough, the outlet of the material dropping bin is connected to the material guiding trough, the right side of each of the material dropping bins is connected to the material guiding trough through a reflux mechanism, the micro-powered dust collector is fixedly installed at the tail of the material guiding trough, and the air inlet of the micro-powered dust collector is connected to the material guiding trough.

[0005] Preferably, the head sealing mechanism includes a sealing cover, a first sealing plate and a second sealing plate, the sealing cover is fixedly mounted on the material guide groove, one end of the first sealing plate is fixedly connected to the inner side of the sealing cover, and the other end is sealingly connected to the material guide groove, one end of the second sealing plate is fixedly connected to the bottom of the sealing cover, and the other end is sealingly connected to the material guide groove, and the material of the first sealing plate and the second sealing plate is rubber.

[0006] Preferably, the material guide trough adopts a fully enclosed structure, including a base frame, rollers, a conveyor belt, a bottom support plate, an anti-overflow assembly and an upper closed cover. The rollers are installed on the base frame and are rollingly connected to the conveyor belt. The top of the bottom support plate is fixedly and sealingly connected to the upper closed cover. The bottom support plate is fixedly connected to the base frame through legs. A slide plate is provided on the legs. Both sides of the conveyor belt are respectively supported in the middle of the slide plate and the anti-overflow assembly, and the anti-overflow assembly is fixedly connected to the inner wall of the bottom support plate.

[0007] Preferably, the inner wall of the upper closed cover is provided with a dustproof soft curtain, and the dustproof soft curtain is fixed in the material guide trough in a staggered arrangement, and the bottom of the dustproof soft curtain is flush with the outlet height of the drop bin.

[0008] Preferably, a rubber plate is provided on the anti-overflow component, an anti-overflow plate is provided at the bottom of the rubber plate, the bottom surface of the anti-overflow plate abuts against the conveyor belt, and the material of the anti-overflow plate is an ultra-high molecular polyethylene plate.

[0009] Preferably, the overlapping width of the transverse cross-sectional length of the rubber plate and the conveyor belt is 150 mm, and the length of the anti-overflow plate matches the length of the conveyor belt.

[0010] Preferably, the reflux mechanism includes a reflux pipe and a dust reduction chamber, one end of the reflux pipe is connected to one side of the outlet of the material drop bin, the other side of the reflux pipe is connected to the inlet of the dust reduction chamber, the outlet of the dust reduction chamber is connected to the material guide trough, and a plurality of dust reduction plates are arranged in the dust reduction chamber.

[0011] Preferably, the micro-powered dust collector comprises a box body, a cloth bag, a blowing system and an explosion-proof centrifugal fan. The inner wall of the box body is provided with a middle partition. The cloth bag is fixedly connected to the middle partition through a skeleton. The blowing system and the explosion-proof centrifugal fan are respectively fixedly mounted on both sides of the box body. The explosion-proof centrifugal fan is connected to the top of the box body. The blowing system passes through the top of the box body and is fixed on the inner wall of the box body. The bottom of the box body is connected to the material guide trough.

[0012] Preferably, the spraying system adopts a pulse structure, and an electromagnetic pulse valve is provided on the spraying system.

[0013] Preferably, a method for using a novel micro-power dust reduction and material guiding device comprises the following steps: S1: Coal powder dropping: the coal in the dropping bin is dropped into the fully enclosed guide trough through the dropping port. The dropping port of the dropping bin is as close as possible to the top of the belt in the guide trough. At the same time, the head of the guide trough is sealed with a double-layer rubber plate to prevent dust from overflowing from the guide trough. S2: Coal conveying: The coal in the guide trough is conveyed outward by the belt conveyor. The ultra-high molecular polyethylene slide plates and anti-overflow pressure plates on both sides of the belt reduce the friction between the side belts and play a sealing role. The anti-overflow component prevents coal powder from entering between the belt and the slide plate, and protects the impact damage of falling materials on the belt, thus enhancing the stability of the equipment; S3: Coal dust pressure relief and dust reduction; In order to prevent dust from overflowing, a return pipe is introduced from the dust reduction chamber on the fully enclosed material guide trough to the material drop bin. Due to the effect of positive and negative pressure, the airflow between the material guide trough, the return pipe and the material drop bin forms a circulation effect, which resolves most of the impact pressure during material drop, effectively disturbs the flow, expands the volume and reduces the pressure. At the same time, the dust-proof soft curtain on the guide trough gradually reduces its speed, closes, filters, reduces the wind speed and balances the air pressure inside the cavity, so as to achieve the dust reduction requirements and truly achieve micro-power; S4: Micro-powered mist eliminator dust reduction output; a micro-powered pulse bag dust collector is added near the outlet of the guide trough in the coal conveying section, that is, the dust collector box is directly placed on the guide trough. When the dust outlet exceeds the standard, the dust collector is turned on. At this time, the dust collector plays the role of dust removal and pressure relief, and the dust on the bag is back-blown by the pulse valve and falls back onto the belt for output. No workload is added, and full automation of dust removal and dust reduction is achieved. After the dust reduction treatment of the new micro-powered dust reduction and guide device, the dust content in the air of the output coal is less than 2~8mg / m³.

[0014] Therefore, compared with the prior art, the present invention has the following beneficial effects: (1) The novel micro-powered dust reduction and material guiding device of the present invention completely encloses a section of the belt and the material drop bin, replacing the original old-style material guiding trough and dust collector, which can effectively prevent dust from overflowing on both sides of the belt and the machine head. At the same time, staggered dust-proof soft curtains are arranged on the inner wall of the upper closed cover in the material guiding trough. After the dust reduction treatment of the novel micro-powered dust reduction and material guiding device, the dust content in the air is less than 2~8mg / m³.

[0015] (2) The micro-power dust reduction and material guiding device provided by the present invention first adopts a fully enclosed form to prevent dust from overflowing, and then leads a return pipe to the material drop bin on the dust reduction chamber on the material guide trough. Due to the effect of positive and negative pressure, the airflow between the material guide trough, the return pipe and the material drop bin forms a circulation effect, which resolves most of the impact pressure during material drop. Due to the use of a unique dust reduction chamber and return pipe, the dust reduction requirements are fully met, so the spray device is cancelled, and micro-power is truly achieved, ensuring the "original flavor" of the coal quality.

[0016] (3) The present invention utilizes the original transmission system space to install the equipment, which has no impact on the operation and maintenance of the original system, and the one-time investment and operating costs are the lowest compared to other dust removal equipment. The use of wear-resistant ultra-high molecular skateboards reduces friction and plays a sealing role, which not only prolongs the service life of the guide trough transmission system but also solves the problem of belt jumping and deviation. The unique sealing structure minimizes the impact damage of falling materials on the transport belt, greatly prolonging the service life of the belt.

[0017] (4) The present invention adds a micro-power pulse bag dust collector near the outlet of the guide chute in the coal conveying section, that is, the dust collector box is directly placed on the guide chute. When the dust outlet exceeds the standard, the dust collector is turned on. At this time, the dust collector plays the role of dust removal and pressure relief, and the dust on the bag falls back onto the belt conveyor after backblowing. No workload is increased, and the dust removal and dust reduction are fully automated.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A magnified image of point A; Figure 3 is a cross-sectional view of the material guide trough in the present invention; Figure 4 It is the front view of the micro-power dust collector in the present invention.

[0020] Reference numerals: 1. Head sealing mechanism; 11. Sealing cover; 12. First sealing plate; 13. Second sealing plate; 2. Dropping bin; 3. Backflow mechanism; 31. Backflow pipe; 32. Dust reduction chamber; 4. Material guide trough; 41. Base frame; 42. Roller; 43. Leg; 44. Slide plate; 45. Conveyor belt; 46. Bottom support plate; 47. Anti-overflow assembly; 4701. Rubber plate; 4702. Anti-overflow pressure plate; 48. Dust-proof soft curtain; 49. Upper closure cover; 5. Micro-power dust collector; 51. Box; 52. Cloth bag; 53. Frame; 54. Middle partition; 55. Spraying system; 56. Electromagnetic pulse valve; 57. Explosion-proof centrifugal fan. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Example See also Figure 1-Figure 2The present invention provides a novel micro-power dust reduction and material guiding device, including a material guiding trough 4, a material dropping bin 2, a reflux mechanism 3 and a micro-power dust collector 5. A head sealing mechanism 1 is arranged at one end of the material guiding trough 4, wherein the head sealing mechanism 1 includes a sealing cover 11, a first sealing plate 12 and a second sealing plate 13. The sealing cover 11 is fixedly mounted on the material guiding trough 4, one end of the first sealing plate 12 is fixedly connected to the inner side of the sealing cover 11, and the other end is sealed to the material guiding trough 4, one end of the second sealing plate 13 is fixedly connected to the bottom of the sealing cover 11, and the other end is sealed to the material guiding trough 4, and the material of the first sealing plate 12 and the second sealing plate 13 is rubber. The sealing of the head sealing mechanism 1 adopts a rubber sealing plate sealing, and can adopt a two-layer or three-layer sealing according to the impact size of the falling material, so as to effectively prevent dust from overflowing. The present embodiment is a two-layer sealing, which can effectively block dust and is convenient for maintenance and has a long service life. Several material bins 2 are fixedly installed on the top of the material guide trough 4. The outlet of the material bin 2 is connected to the material guide trough 4. The right side of each material bin 2 is connected to the material guide trough 4 through a reflux mechanism 3. The reflux mechanism 3 includes a reflux pipe 31 and a dust reduction chamber 32. One end of the reflux pipe 31 is connected to one side of the outlet of the material bin 2, and the other side of the reflux pipe 31 is connected to the entrance of the dust reduction chamber 32. The outlet of the dust reduction chamber 32 is connected to the material guide trough 4. Several dust reduction plates are arranged in the dust reduction chamber 32. The micro-powered dust collector 5 is fixedly installed at the tail of the material guide trough 4, and the air inlet of the micro-powered dust collector 5 is connected to the material guide trough 4. The material guide trough 4 adopts a fully enclosed structure. The arrow direction at B in the figure is the coal transmission direction of the material guide trough 4, and at the same time, the angle θ between the transmission plane of the material guide trough 4 and the horizontal direction is ensured to be 4°. Its micro-power dust reduction and material guiding device first adopts a fully enclosed form to prevent dust from overflowing, and leads a return pipe 31 to the material bin 2 on the dust reduction chamber 32 on the material guide trough 4. Due to the effect of positive and negative pressure, the airflow between the material guide trough 4, the return pipe 31, and the material bin 2 forms a circulation effect, which resolves most of the impact pressure during material dropping. Due to the use of a unique dust reduction chamber 32 and a return pipe 31, the dust reduction requirements are fully met, so the spray device is cancelled, truly achieving micro-power and ensuring the "original flavor" of the coal quality.

[0024] See also Figure 3As shown, the guide chute 4 includes a base frame 41, rollers 42, a conveyor belt 45, a bottom support plate 46, an anti-overflow component 47 and an upper closed cover 49. The rollers 42 are mounted on the base frame 41 and are rollingly connected to the conveyor belt 45. The top of the bottom support plate 46 is fixedly and sealedly connected to the upper closed cover 49. The bottom support plate 46 is fixedly connected to the base frame 41 through the legs 43. The legs 43 are provided with a slide plate 44. The two sides of the conveyor belt 45 are respectively supported in the middle of the slide plate 44 and the anti-overflow component 47, and the anti-overflow component 47 is fixedly connected to the inner wall of the bottom support plate 46. A dustproof soft curtain 48 is provided on the inner wall of the upper closed cover 49. The dustproof soft curtain 48 is fixed in the guide chute 4 in a staggered arrangement. The bottom of the dustproof soft curtain 48 is flush with the outlet height of the drop bin 2. A rubber plate 4701 is provided on the anti-overflow component 47, and an anti-overflow plate 4702 is provided at the bottom of the rubber plate 4701. The bottom surface of the anti-overflow plate 4702 abuts against the conveyor belt 45, and the material of the anti-overflow plate 4702 is an ultra-high molecular polyethylene plate. The cross-sectional length of the rubber plate 4701 and the overlapping width of the conveyor belt 45 are ensured to be 150 mm, and the length of the anti-overflow plate 4702 matches the length of the conveyor belt 45. By adopting the wear-resistant ultra-high molecular skateboard 44, the service life of the guide trough 4 transmission system is extended and the belt jumping and deviation are solved. The unique sealing structure minimizes the impact damage of the falling material on the transport belt, greatly extending the service life of the belt.

[0025] See also Figure 4 As shown, the micro-power dust collector 5 includes a box body 51, a bag 52, a blowing system 55 and an explosion-proof centrifugal fan 57. The inner wall of the box body 51 is provided with a middle partition 54. The bag 52 is fixedly connected to the middle partition 54 through a frame 53. The blowing system 55 and the explosion-proof centrifugal fan 57 are respectively fixedly installed on both sides of the box body 51. The explosion-proof centrifugal fan 57 is connected to the top of the box body 51. The blowing system 55 passes through the top of the box body 51 and is fixed on the inner wall of the box body 51. The bottom of the box body 51 is connected to the guide trough 4. The blowing system 55 adopts a pulse structure, and an electromagnetic pulse valve 56 is provided on the blowing system 55. By adding a micro-power pulse bag dust collector 52 near the outlet of the guide chute 4 in the coal conveying section, that is, the dust collector box 51 is directly placed on the guide chute 4, and the dust collector is turned on when the dust outlet exceeds the standard, the dust collector plays a role in dust removal and pressure relief, and the dust on the bag 52 falls back onto the belt conveyor after backblowing, without increasing any workload, and achieving full automation of dust removal and dust reduction.

[0026] Therefore, the present invention adopts a novel micro-power dust reduction and material guiding device and use method of the above-mentioned structure, by adopting a unique dust reduction chamber and reflux pipe method, and placing the dust collector box directly on the material guide trough, it can fully meet the requirements of dust reduction and pressure relief, truly achieve micro-power, and does not increase any workload. The device is maintenance-free and has low operating costs. Micro-power dust removal can save energy and manpower.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A new type of micro-power dust reduction and material guiding device, characterized in that: It includes a material guide trough, a material drop bin, a reflux mechanism and a micro-powered dust collector. A head sealing mechanism is provided at one end of the material guide trough. Several material drop bins are fixedly installed on the top of the material guide trough. The outlets of the material drop bins are connected to the material guide trough. The right side of each material drop bin is connected to the material guide trough through a reflux mechanism. The micro-powered dust collector is fixedly installed at the tail of the material guide trough. The air inlet of the micro-powered dust collector is connected to the material guide trough.

2. A novel micro-power dust reduction and material guiding device according to claim 1, characterized in that: The head sealing mechanism includes a sealing cover, a first sealing plate and a second sealing plate. The sealing cover is fixedly mounted on the material guide groove. One end of the first sealing plate is fixedly connected to the inner side of the sealing cover, and the other end is sealingly connected to the material guide groove. One end of the second sealing plate is fixedly connected to the bottom of the sealing cover, and the other end is sealingly connected to the material guide groove. The first sealing plate and the second sealing plate are made of rubber.

3. A novel micro-power dust reduction and material guiding device according to claim 1, characterized in that: The material guide trough adopts a fully enclosed structure, including a base frame, rollers, a conveyor belt, a bottom support plate, an anti-overflow component and an upper closed cover. The rollers are installed on the base frame and are rollingly connected to the conveyor belt. The top of the bottom support plate is fixedly and sealingly connected to the upper closed cover. The bottom support plate is fixedly connected to the base frame through legs. A slide plate is provided on the legs. Both sides of the conveyor belt are respectively supported in the middle of the slide plate and the anti-overflow component, and the anti-overflow component is fixedly connected to the inner wall of the bottom support plate.

4. A novel micro-power dust reduction and material guiding device according to claim 3, characterized in that: The inner wall of the upper closed cover is provided with a dustproof soft curtain, and the dustproof soft curtain is fixed in the material guide trough in a staggered arrangement, and the bottom of the dustproof soft curtain is flush with the outlet height of the drop bin.

5. A novel micro-power dust reduction and material guiding device according to claim 3, characterized in that: A rubber plate is arranged on the anti-overflow component, an anti-overflow plate is arranged at the bottom of the rubber plate, the bottom surface of the anti-overflow plate abuts against the conveyor belt, and the material of the anti-overflow plate is an ultra-high molecular polyethylene plate.

6. A novel micro-power dust reduction and material guiding device according to claim 5, characterized in that: The overlapping width of the transverse cross-sectional length of the rubber plate and the conveyor belt is 150 mm, and the length of the anti-overflow plate matches the length of the conveyor belt.

7. A novel micro-power dust reduction and material guiding device according to claim 1, characterized in that: The reflux mechanism includes a reflux pipe and a dust reduction chamber, one end of the reflux pipe is connected to one side of the outlet of the material drop bin, the other side of the reflux pipe is connected to the inlet of the dust reduction chamber, the outlet of the dust reduction chamber is connected to the material guide trough, and a plurality of dust reduction plates are arranged in the dust reduction chamber.

8. The novel micro-power dust reduction and material guiding device according to claim 1 is characterized in that: The micro-powered dust collector comprises a box body, a cloth bag, a blowing system and an explosion-proof centrifugal fan. The inner wall of the box body is provided with a middle partition. The cloth bag is fixedly connected to the middle partition through a skeleton. The blowing system and the explosion-proof centrifugal fan are respectively fixedly mounted on both sides of the box body. The explosion-proof centrifugal fan is communicated with the top of the box body. The blowing system passes through the top of the box body and is fixed on the inner wall of the box body. The bottom of the box body is communicated with the material guide trough.

9. A novel micro-power dust reduction and material guiding device according to claim 8, characterized in that: The spraying system adopts a pulse structure and is provided with an electromagnetic pulse valve.

10. A method for using a novel micro-power dust reduction and material guiding device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Coal powder dropping: the coal in the dropping bin is dropped into the fully enclosed guide trough through the dropping port. The dropping port of the dropping bin is as close as possible to the top of the belt in the guide trough. At the same time, the head of the guide trough is sealed with a double-layer rubber plate to prevent dust from overflowing from the guide trough. S2: Coal conveying: The coal in the guide trough is conveyed outward by the belt conveyor. The ultra-high molecular polyethylene slide plates and anti-overflow pressure plates on both sides of the belt reduce the friction between the side belts and play a sealing role. The anti-overflow component prevents coal powder from entering between the belt and the slide plate, and protects the impact damage of falling materials on the belt, thus enhancing the stability of the equipment; S3: Coal dust pressure relief and dust reduction; In order to prevent dust from overflowing, a return pipe is introduced from the dust reduction chamber on the fully enclosed material guide trough to the material drop bin. Due to the effect of positive and negative pressure, the airflow between the material guide trough, the return pipe and the material drop bin forms a circulation effect, which resolves most of the impact pressure during material drop, effectively disturbs the flow, expands the volume and reduces the pressure. At the same time, the dust-proof soft curtain on the guide trough gradually reduces its speed, closes, filters, reduces the wind speed and balances the air pressure inside the cavity, so as to achieve the dust reduction requirements and truly achieve micro-power; S4: Micro-powered mist eliminator dust reduction output; a micro-powered pulse bag dust collector is added near the outlet of the guide trough in the coal conveying section, that is, the dust collector box is directly placed on the guide trough. When the dust outlet exceeds the standard, the dust collector is turned on. At this time, the dust collector plays the role of dust removal and pressure relief, and the dust on the bag is back-blown by the pulse valve and falls back onto the belt for output. No workload is added, and full automation of dust removal and dust reduction is achieved. After the dust reduction treatment of the new micro-powered dust reduction and guide device, the dust content in the air of the output coal is less than 2~8mg / m³.

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