LU505307B1 - Mechanical ventilation and dust removal device for strip coal yard and dust removal method thereof - Google Patents

Mechanical ventilation and dust removal device for strip coal yard and dust removal method thereof Download PDF

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Publication number
LU505307B1
LU505307B1 LU505307A LU505307A LU505307B1 LU 505307 B1 LU505307 B1 LU 505307B1 LU 505307 A LU505307 A LU 505307A LU 505307 A LU505307 A LU 505307A LU 505307 B1 LU505307 B1 LU 505307B1
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LU
Luxembourg
Prior art keywords
coal yard
dust removal
coal
dust
blower
Prior art date
Application number
LU505307A
Other languages
German (de)
Inventor
Junwen Feng
Bo Shao
Kai Jing
Sheng Zhong
Fulong Yi
Lijun Jiang
Yu Li
Likai Wang
Yu Yan
Original Assignee
Huaneng Dalian Co Generation Co Ltd
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Priority to LU505307A priority Critical patent/LU505307B1/en
Application granted granted Critical
Publication of LU505307B1 publication Critical patent/LU505307B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • F24F3/167—Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

A mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof are provided according to the present application. Coal piles are provided on two sides of a bucket wheel unit. Multiple coal yard sprinklers are provided at one side of the coal piles to perform dust reduction for the whole coal plant. A roof ventilator is provided at a middle of a coal yard frame, and multiple blower units are provided on the roof ventilator. Multiple coal yard ceilings are provided on two sides of the roof ventilator and two side of the coal yard frame. Multiple lower ventilation panels are provided at lower ends of the multiple coal yard ceilings. Two mechanical ventilation modes including an upper inlet and a lower outlet and a lower inlet and an upper outlet are formed by the roof ventilator and the multiple lower ventilation panels cooperating with each other. With the mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof, the internal environment of the coal yard can be changed in the process of usage, and the quality concentration of the dust and the airflow organization can be improved, so as to reduce the dust concentration inside the strip coal yard, reduce the content of harmful gas inside the coal yard, and meet the occupational hygiene requirements for the internal environment of the coal yard.

Description

MECHANICAL VENTILATION AND DUST REMOVAL DEVICE FOR STRIP
COAL YARD AND DUST REMOVAL METHOD THEREOF
FIELD
[0001] The present application relates to the technical field of coal storage equipment, and in particular relates to a mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof.
BACKGROUND
[0002] A closed coal yard is applied in most of newly built coal-fired power plants in China.
A conventional open coal yard and semi-open coal yard have been transformed to be closed due to environmental protection pressure. In the closed coal yard, a strip coal yard is more suitable for the actual production than a round coal yard and a silo. A closed strip coal yard is of a steel frame structure in which a roof is configured as a steel roof frame and a color steel plate is provided on an outer side of the steel roof frame for closure. The storage of coal is not affected by climatic conditions, and the prevention of dust can be realized, which is conducive to the protection of the surrounding environment. However, in the internal environment of the strip coal yard, and there is a possibility of the accumulation of the dust concentration and the harmful gases (CO and CH4). The conventional strip coal yards generally adopt a natural ventilation mode, in which a ventilation loop is formed between a ventilation panel between a top of a retaining wall and a grid frame, and a windshield on a roof or a ventilation panel at a roof ventilator.
[0003] However, conventional natural ventilation methods have the following problems:
[0004] 1. A dust concentration inside a strip coal yard often exceeds a standard, and water spraying or micro-mist dust suppression facilities are usually used to ensure the concentration inside the coal yard to not exceed the standard. The amount of water spraying is uncontrollable, resulting in higher water content in the coal, which increases a failure rate of subsequent apparatuses along a coal flow, and affects the input rate of a subsequent dust suppression apparatus.
[0005] 2. In the current stage, in order to satisfy the unit coal requirements, the coal yard has a long storage cycle and the coal is stored for a long time period. The coal yard operates in an operating principle that "the coal firstly inputted 1s firstly outputted". Although the coal pile storage time period in the coal yard can be effectively controlled, but the internal temperature for coal storage of the closed coal yard is difficult to control. The phenomenon of smoldering and smoking often occurs, affecting the health of operation and maintenance staffs and increasing occupational hazards.
SUMMARY
[0006] With regard to the above problems, a mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof are provided according to the present application, in order to solve the technical problems proposed in the above conventional technology in which a dust concentration inside the coal yard is high, ventilation is poor, lots of harmful gases exist, as well as a single ventilation mode is used, only improving monitoring means and the use of spraying water dust suppression and cooling means cannot solve the problem of improving the ventilation environment inside the strip coal yard and the occupational hazards.
[0007] To realize the above object, the following technical solutions are provided according to the present application. A mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof is provided. The mechanical ventilation and dust removal device includes a bucket wheel unit, where coal piles are provided on two sides of the bucket wheel unit, multiple coal yard sprinklers are provided at one side of the coal piles to perform dust reduction for the whole coal plant by the multiple coal yard sprinklers, a coal yard frame is provided above the multiple coal piles, a roof ventilator is provided at a middle of the coal yard frame, and multiple blower units are provided on the roof ventilator, multiple coal yard ceilings are provided on two sides of the roof ventilator and two side of the coal yard frame, multiple lower ventilation panels are provided at lower ends of the multiple coal yard ceilings, two mechanical ventilation mode including an upper inlet and a lower outlet and a lower inlet and an upper outlet are formed by the roof ventilator and the multiple lower ventilation panels cooperating with each other.
[0008] In an embodiment, in an operating period of the bucket wheel unit, the blower unit, provided at a position corresponding to an operating position of the bucket wheel unit, is activated to suck in air from the outside, to form a ventilation mode including the upper inlet and the lower outlet, suppress dust from entering into a reclaiming hopper area of the bucket wheel unit, and prevent the dust from spreading to an upper space.
[0009] In an embodiment, in the ventilation mode including the upper inlet and the lower outlet, a rotational speed of the corresponding blower unit is adjusted based on a dust suppression effect to achieve the dust suppression effect, a frequency of using the coal yard sprinklers 1s reduced to reduce an amount of water spraying, reducing the number of plugging of subsequent apparatuses including a coal feeder, a coal hopper, a belt, and a bucket wheel machine along a coal flow, reducing the hot air output, thereby improving a combustion efficiency of a boiler.
[0010] In an embodiment, in a case of a long period of unconsumed coal storage in the coal yard, a dust concentration exceeds a standard, and a harmful gas concentration is not capable of conforming to an occupational hygiene requirement for a long time period, the blower unit at a corresponding position is activated to draw out the air from the inside to form the ventilation mode including the lower inlet and the upper outlet, and the blower unit is in a low speed suction speed to rapidly reduce a gas concentration inside the strip coal yard.
[0011] In an embodiment, the roof ventilator includes a blower mounting base plate, multiple the multiple blower units are arranged at a middle of the blower mounting base plate, and multiple the blower units near two ends of the blower mounting base plate are configured as blowers with low power 120W, multiple the blower units arranged between two ends and the middle of the blower mounting base plate are configured as blowers with medium power 250W, and a blower unit at the middle of the blower mounting base plate is configured as a blower with high power 320W.
[0012] In an embodiment, the blower unit includes a blower body, the blower body is arranged at the middle of the blower mounting base plate, a thermoplastic ring is provided at a top surface of the blower body, a dust suppression block is provided at a middle of the thermoplastic ring, and a mushroom cap is provided at an upper end of the thermoplastic ring.
[0013] In an embodiment, the thermoplastic ring includes a top fixing ring, multiple thermoplastic plates are provided under a bottom surface of the top fixing ring, and lower ends of the multiple thermoplastic plates are provided at a top surface of the blower body.
[0014] In an embodiment, the dust suppression block includes a dust suppression support frame, and multiple S-shaped dust suppression plates are provided inside the dust suppression support frame.
[0015] In an embodiment, the multiple S-shaped dust suppression plates are stacked at intervals.
[0016] In an embodiment, the lower ventilation panel includes a ventilation outer frame, and a ventilation mesh is provided at a middle of the ventilation outer frame.
[0017] Compared to the conventional technology, the present application has the following advantageous effects.
[0018] With the mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof, the internal environment of the coal yard can be changed in the process of usage, and the quality concentration of the dust and the airflow organization can be improved, so as to reduce the dust concentration inside the strip coal yard, reduce the content of harmful gas inside the coal yard, and meet the occupational hygiene requirements for the internal environment of the coal yard.
[0019] 1. Mechanical ventilation blowers are provided to change the internal airflow organization environment of the coal yard by provision of a row of (five) bi-directional exhaust, infinitely variable axial blowers on the roof, using different start-up modes in different situations, so as to reduce the diffusion speed of the dust and the concentration level in the space, control the frequency of the usage of water spraying for dust suppression, effectively avoiding the caking of a coal bunker, and effectively preventing a belt from deflecting and skidding, preventing a belt joint from pushing up, and improving the utilization rate of the equipment.
[0020] 2. The S-shaped ring dust suppression plates and the mushroom cap are provided at a blower outlet. By provision of a row of axial blowers on the top of the strip coal yard, taking into account the impact of rain and snow, the mushroom cap is provided to ensure the safe operation of the equipment. The S-shaped dust suppression plates and a sinter plate of 100 um are provided between the mushroom cap and the blower outlet to perform dust reduction.
When the bucket wheel machine and a coal pusher are not operating in the coal yard, self dust-removal is performed on the S-shaped dust suppression plates and the sinter plate based on a characteristic of the blower itself being capable of a low rotational speed and bi- directional rotation.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is a schematic view of an external structure of the present application;
[0022] FIG. 2 1s a front cross-section schematic view of an internal structure of the present application;
[0023] FIG. 3 is an exploded schematic view of the internal structure of the present application; 5 [0024] FIG. 4 is a schematic structural view of a roof ventilator of the present application;
[0025] FIG. S 1s a schematic structural view of a blower unit of the present application in an open state;
[0026] FIG. 6 is a schematic structural view of a thermoplastic ring of the present application;
[0027] FIG. 7 is a schematic structural view of a dust suppression block of the present application; and
[0028] FIG. 8 is a schematic structural view of a lower ventilation panel of the present application.
[0029] Reference numerals in the figures are as follows: 1, bucket wheel unit; 2, coal pile; 3, coal yard sprinkler; 4, coal yard frame; 41, coal yard roof; 5, roof ventilator; 51, blower unit; 511, blower body; 512, thermoplastic ring; 5121, top fixing ring; 5122, thermoplastic plate; 513, dust suppression block; 5131, dust suppression support frame; 5132, S-shaped dust suppression plate; 514, mushroom cap; 52, blower mounting base plate; 6, lower ventilation panel; 61, ventilation outer frame; 62, ventilation mesh.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] In order to facilitate the understanding of the present application, the present application will be described in full details with reference to the relevant drawings, several embodiments of the present application are shown in the attached drawings. However, the present application can be implemented in different forms, not limited to the embodiments described in the specification. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.
[0031] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on another element or there may be an intermediate element, when an element is considered to be "connected" to the other element, it can be directly connected to the other element or there may be an intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field of the present application. Terms are used herein in the description of the present application merely to describe particular embodiments and are not aimed to limit the present application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.
[0033] In an embodiment, with focus reference to FIGS. 1 to 3, a mechanical ventilation dust removal device for a strip coal yard and a dust removal method thereof are provided. The mechanical ventilation dust removal device for a strip coal yard includes a bucket wheel unit 1. Coal piles 2 are provided on two sides of the bucket wheel unit 1, multiple coal yard sprinklers 3 are provided at one side of the coal piles 2 to perform dust reduction for the whole coal plant by the multiple coal yard sprinklers 3. A coal yard frame 4 is provided above the multiple coal piles 2, a roof ventilator 5 is provided at a middle of the coal yard frame 4, and multiple blower units 51 are provided on the roof ventilator 5. Multiple coal yard ceilings 41 are provided on two sides of the roof ventilator 5 and two side of the coal yard frame 4.
Multiple lower ventilation panels 6 are provided at lower ends of the multiple coal yard ceilings 41. Two mechanical ventilation modes including an upper inlet and a lower outlet and a lower inlet and an upper outlet are formed by the roof ventilator 5 and the multiple lower ventilation panels 6 cooperating with each other. The research shows that an average wind speed and local wind speed in the coal plant under the condition of ventilation mode including the lower inlet and the upper outlet are greater than those of ventilation mode including the upper inlet and the lower outlet. However, the strong roll-absorbing and diffusion-promoting effect of the ventilation mode including the upper inlet and the lower outlet accelerates the diffusion speed and the pollution concentration of the dust of the coal piles. The airflow organization of the ventilation system including the upper inlet and the lower outlet inhibits the tendency of the dust of the coal piles to spread into an upper space and controls the dust pollution mainly in the area near the coal pile.
[0034] In an embodiment, in an operating period of the bucket wheel unit 1, the blower unit 51, provided at a position corresponding to an operating position of the bucket wheel unit 1, is activated to suck in air from the outside, to form a ventilation mode including the upper inlet and the lower outlet, suppress dust from entering into a reclaiming hopper area of the bucket wheel unit 1, and prevent the dust from spreading to an upper space. In the ventilation mode including the upper inlet and the lower outlet, a rotational speed of the corresponding blower unit 51 is adjusted based on a dust suppression effect to achieve the dust suppression effect, a frequency of using the coal yard sprinklers 3 is reduced to reduce an amount of water spraying, reducing the number of plugging of subsequent apparatuses including a coal feeder, a coal hopper, a belt, and a bucket wheel machine along a coal flow, reducing a hot air output, thereby improving a combustion efficiency of a boiler.
[0035] In an embodiment, in a case of a long period of unconsumed coal storage in the coal yard, a dust concentration exceeds a standard, and a harmful gas concentration is not capable of conforming to an occupational hygiene requirement for a long time period, the blower unit 51 at a corresponding position is activated to draw out the air from the inside to form the ventilation mode including the lower inlet and the upper outlet. The blower unit 51 is in a low speed suction speed to rapidly reduce a gas concentration inside the strip coal yard.
[0036] In an embodiment, with focus reference to FIG. 4, the roof ventilator 5 includes a blower mounting base plate 52, the multiple blower units 51 are arranged at a middle of the blower mounting base plate 52, and multiple the blower units 51 near two ends of the blower mounting base plate 52 are configured as blowers with low power 120W, multiple the blower units 51 arranged between two ends and the middle of the blower mounting base plate 52 are configured as blowers with medium power 250W. A blower unit 51 at the middle of the blower mounting base plate 52 is configured as a blower with high power 320W. In this design, different power blowers are selected based on the relationship between the blower unit 51 and the distance between the two sides and the surrounding coal yard frame 4, and the most remote side is configured as a blower with low power due to the working environment near the coal yard frame 4 of the two blower units 51 closest to the two sides, and then the blower units 51 near the middle are configured as blowers with high power, and the most intermediate blower unit 51 is configured as a blower with ultra-high power.
[0037] In an embodiment, with focus reference to FIG. 5, the blower unit 51 includes a blower body 511, the blower body 511 is arranged at the middle of the blower mounting base plate 52, a thermoplastic ring 512 is provided at a top surface of the blower body 511, a dust suppression block 513 is provided at a middle of the thermoplastic ring 512, and a mushroom cap 514 is provided at an upper end of the thermoplastic ring 512. This design takes into account the impact of rain and snow weather, snow and rain water are prevented from entering into the internal coal yard in rain and snow weather through the mushroom cap 514, to ensure that the stored coal will not infringed by rain and snow. The risk of dust spillage is reduced through the thermoplastic ring 512, and the possibility of dust spillage is further reduced through the dust suppression block 513, to reduce the amount of dust content of the exhaust air, so that the exhaust gas meets the environmental requirements.
[0038] In an embodiment, with focus reference to FIG. 6, the thermoplastic ring 512 includes a top fixing ring 5121, multiple thermoplastic plates 5122 are provided under a bottom surface of the top fixing ring 5121, and lower ends of the multiple thermoplastic plates 5122 are provided at a top surface of the blower body 511.
[0039] In an embodiment, with focus reference to FIG. 7, the dust suppression block 513 includes a dust suppression support frame 5131, and multiple S-shaped dust suppression plates 5132 are provided inside the dust suppression support frame 5131. The multiple S- shaped dust suppression plates 5132 are stacked at intervals.
[0040] In an embodiment, with focus reference to FIG. 8, the lower ventilation panel 6 includes a ventilation outer frame 61, and a ventilation mesh 62 is provided at a middle of the ventilation outer frame 61.
[0041] Principle of operation is described as follows. Firstly, in order to ensure the normal operating of the coal yard, the bucket wheel unit 1 is provided in the coal yard. In order to ensure the requirement of dust removal, multiple coal yard sprinklers 3 are provided. The roof ventilator 5 and the multiple lower ventilation panels 6 cooperate with each other to form the two mechanical ventilating modes including the upper inlet and the lower outlet and the lower inlet and the upper outlet. In an operating period of the bucket wheel unit 1, the blower unit 51, provided at a position corresponding to an operating position of the bucket wheel unit 1, is activated to suck in air from the outside, to form a ventilation mode including the upper inlet and the lower outlet, suppress dust from entering into a reclaiming hopper area of the bucket wheel unit 1, and prevent the dust from spreading to an upper space. In the ventilation mode including the upper inlet and the lower outlet, a rotational speed of the corresponding blower unit 51 is adjusted based on a dust suppression effect to achieve the dust suppression effect, a frequency of using the coal yard sprinklers 3 is reduced to reduce an amount of water spraying, reducing the number of plugging of subsequent apparatuses including a coal feeder, a coal hopper, a belt, and a bucket wheel machine along a coal flow, reducing a hot air output, thereby improving a combustion efficiency of a boiler. In a case of a long period of unconsumed coal storage in the coal yard, a dust concentration exceeds a standard, and a harmful gas concentration is not capable of conforming to an occupational hygiene requirement for a long time period, the blower unit 51 at a corresponding position 1s activated to draw out the air from the inside to form the ventilation mode including the lower inlet and the upper outlet. The blower unit 51 is in a low speed suction speed to rapidly reduce a gas concentration inside the strip coal yard. By adding the mushroom cap 514, snow and rainwater are prevented from entering the inside of the coal yard in rainy or snowy weather, ensuring that the stored coal is not infringed by rain or snow. The risk of dust spillage is reduced through the thermoplastic ring 512, and the possibility of dust spillage is further reduced through the dust suppression block 513, to reduce the amount of dust content of the exhaust air, so that the exhaust gas meets the environmental requirements.
[0042] The present application is exemplarily described hereinafter in combination with the accompanying drawings. Apparently, the specific implementation of the present application is not limited by the above methods. As long as the non-substantive improvement of the method concept and technical solution of the present application is adopted, or the idea and technical solution of the present application are directly applied to other occasions without improvement, it falls within the scope of protection of the present application.

Claims (10)

1. A mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof, comprising: a bucket wheel unit (1), wherein coal piles (2) are provided on two sides of the bucket wheel unit (1), multiple coal yard sprinklers (3) are provided at one side of the coal piles (2) to perform dust reduction for the whole coal plant by the multiple coal yard sprinklers (3), a coal yard frame (4) is provided above the multiple coal piles (2), a roof ventilator (5) is provided at a middle of the coal yard frame (4), and a plurality of blower units (51) are provided on the roof ventilator (5), and a plurality of coal yard ceilings (41) are provided on two sides of the roof ventilator (5) and two side of the coal yard frame (4), a plurality of lower ventilation panels (6) are provided at lower ends of the plurality of coal yard ceilings (41), and two mechanical ventilation modes comprising an upper inlet and a lower outlet and a lower inlet and an upper outlet are formed by the roof ventilator (5) and the multiple lower ventilation panels (6) cooperating with each other.
2. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 1, wherein in an operating period of the bucket wheel unit (1), the blower unit (51), provided at a position corresponding to an operating position of the bucket wheel unit (1), is activated to suck in air from the outside, to form the ventilation mode comprising the upper inlet and the lower outlet, suppress dust from entering into a reclaiming hopper area of the bucket wheel unit (1), and prevent the dust from spreading to an upper space.
3. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 2, wherein in the ventilation mode comprising the upper inlet and the lower outlet, a rotational speed of the blower unit (51) is adjusted based on a dust suppression effect to achieve the dust suppression effect, a frequency of using the coal yard sprinklers (3) is reduced to reduce an amount of water spraying, reducing the number of plugging of subsequent apparatuses comprising a coal feeder, a coal hopper, a belt, and a bucket wheel machine along a coal flow, reducing a hot air output, thereby improving a combustion efficiency of a boiler.
4. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 1, wherein in a case of a long period of unconsumed coal storage in the coal yard, a dust concentration exceeds a standard, and a harmful gas concentration is not capable of conforming to an occupational hygiene requirement for a long time period, the blower unit (51) at a corresponding position 1s activated to draw out the air from the inside to form the ventilation mode comprising the lower inlet and the upper outlet, and the blower unit (51) is in a low speed suction speed to rapidly reduce a gas concentration inside the strip coal yard.
5. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 1, wherein the roof ventilator (5) comprises a blower mounting base plate (52), the plurality of blower units (51) are arranged at a middle of the blower mounting base plate (52), and a plurality of the blower units (51) near two ends of the blower mounting base plate (52) are configured as blowers with low-power 120W, a plurality of the blower units (51) arranged between two ends and the middle of the blower mounting base plate (52) are configured as blowers with medium power 250W, and a blower unit (51) at the middle of the blower mounting base plate (52) is configured as a blower with high power 320W.
6. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 5, wherein the blower unit (51) comprises a blower body (511), the blower body (511) is arranged at the middle of the blower mounting base plate (52), a thermoplastic ring (512) is provided at a top surface of the blower body (511), a dust suppression block (512) is provided at a middle of the thermoplastic ring (512), and a mushroom cap (514) is provided at an upper end of the thermoplastic ring (512).
7. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 6, wherein the thermoplastic ring (512) comprises a top fixing ring (5121), a plurality of thermoplastic plates (5122) are provided under a bottom surface of the top fixing ring (5121), and lower ends of the plurality of thermoplastic plates (5122) are provided at a top surface of the blower body (511).
8. The mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 6, wherein the dust suppression block (513) comprises a dust suppression support frame (5131), and a plurality of S-shaped dust suppression plates (5132) are provided inside the dust suppression support frame (5131).
9. The mechanically ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 5, wherein the plurality of S-shaped dust suppression plates (5132) are stacked at intervals.
10. À mechanical ventilation and dust removal device for a strip coal yard and a dust removal method thereof according to claim 1, wherein the lower ventilation panel (6) comprises a ventilation outer frame (61), and a ventilation mesh (62) 1s provided at a middle of the ventilation outer frame (61).
LU505307A 2023-10-17 2023-10-17 Mechanical ventilation and dust removal device for strip coal yard and dust removal method thereof LU505307B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
LU505307A LU505307B1 (en) 2023-10-17 2023-10-17 Mechanical ventilation and dust removal device for strip coal yard and dust removal method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU505307A LU505307B1 (en) 2023-10-17 2023-10-17 Mechanical ventilation and dust removal device for strip coal yard and dust removal method thereof

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LU505307B1 true LU505307B1 (en) 2024-04-17

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LU505307A LU505307B1 (en) 2023-10-17 2023-10-17 Mechanical ventilation and dust removal device for strip coal yard and dust removal method thereof

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Effective date: 20240417