Atomized bio-dust suppressant spray dust reduction system

Abstract

The utility model discloses a kind of atomization biological dust suppressant spray dust reduction systems, including dust removal cabinet, wind transport mechanism, multistage cyclone atomization mechanism, intelligent monitoring control module, biological dust suppressant adaptation unit and sewage discharge system.Wind transport mechanism is formed by the wind fan and air supply mechanism of coaxial arrangement, directional airflow is formed.Multistage cyclone atomization mechanism contains at least three groups of adjacent equal phase angle distribution cyclone atomization disc, and super fine mist drop is generated by high-speed rotation and high-pressure atomization.Intelligent monitoring control module is formed closed loop control by sensor and calculating mechanism, and real-time adjustment operating parameter.Biological dust suppressant adaptation unit ensures dust suppressant stable supply and activity maintenance.The utility model is through the cooperation of multistage cyclone atomization and intelligent control, realizes the efficient atomization of biological dust suppressant and the efficient capture to respirable dust, with the advantages of high dust reduction efficiency, high dust suppressant utilization rate, operation intelligentization, applicable to mine, building and other dust control occasions.

Description

Technical Field

[0001] This utility model relates to the field of industrial dust control technology, specifically to a spray and a spray dust suppression system, and in particular to a spray dust suppression system using atomized biological dust suppressant suitable for high-dust working environments such as mines and construction sites. Background Technology

[0002] Mine dust is a general term for solid particles generated during coal production. It is widely present in various stages of mining, coal storage, transportation systems, and tunnel excavation, continuously releasing large amounts of dust into the underground air. This dust has multiple negative impacts on safe production, personnel health, and the mining environment.

[0003] Currently, the main methods for controlling this type of dust are dry dust collection and wet dust collection. Among them, wet dust collection technology is more widely used in practice because of its relatively simple system structure, high safety and reliability, and good adaptability to complex mining conditions.

[0004] Wet dust suppression typically uses atomizing nozzles to spray water for dust reduction. However, in practical applications, existing atomizing nozzles have been found to have significant shortcomings. For example, in high-concentration dust environments such as underground coal mines, problems commonly exist, including low atomization efficiency of biological dust suppressants, weak droplet transport targeting, and insufficient intelligent system control capabilities. This not only results in low utilization of dust suppressants and waste of water resources but also makes it difficult to achieve the expected overall dust suppression effect. Utility Model Content

[0005] In view of the problems and shortcomings of the existing technology, this utility model provides a misting biological dust suppressant spray dust reduction system.

[0006] The technical solution of this utility model is as follows: A dust suppression system using atomized biological dust suppressant includes a cylindrical dust collection box with openings at both ends. Inside the dust collection box, there is a rotatable rotating shaft along the airflow direction. An induced draft fan is located upstream of the rotating shaft, and an expelling fan is located downstream of the rotating shaft.

[0007] Multiple sets of swirling atomizing discs are fixedly installed on the rotating shaft. The swirling atomizing discs are frame structures with an annular frame and multiple spray beams that extend radially and are evenly distributed circumferentially. The spray beams are provided with several atomizing holes or atomizing nozzles.

[0008] The atomizing holes or atomizing nozzle channels on two adjacent swirl atomizing discs are arranged at an equal phase angle and staggered from each other; the rotating shaft is provided with an axial dust suppressant channel, which is connected to the biological dust suppressant adapter unit through a rotary sealing joint; The biological dust suppressant adapter unit includes a corrosion-resistant storage tank and a plunger pump.

[0009] The dust collector is also equipped with a control unit, the output of which is connected to the control terminals of the induced draft fan, the blower fan, and the plunger pump.

[0010] The atomizing holes or atomizing nozzle channels on two adjacent swirl atomizing discs are staggered by a phase angle of 20°-40°.

[0011] The biological dust suppressant adapter unit also includes a temperature sensor and a pH sensor installed inside the corrosion-resistant storage tank, which are connected in communication with the control unit.

[0012] The dust collection chamber is also equipped with an air flow meter, a pressure sensor, and a dust concentration sensor; the air flow meter, pressure sensor, dust concentration sensor, temperature sensor, and pH sensor are all connected to the control unit.

[0013] The swirling atomizing discs are arranged in three groups, with equal spacing along the rotation axis.

[0014] The spray beam consists of four pieces, which are evenly arranged in an array along the circumference of the ring frame.

[0015] The atomizing holes or atomizing nozzle channels on the spray beam of the swirling atomizing disc are arranged in a linear array.

[0016] The dust collector housing has a gradually expanding flare pipe connected to its air outlet.

[0017] The bottom of the dust collector box is provided with an inclined water collection slope, and the lowest point is connected to a drainage trough with a drain valve.

[0018] The beneficial effects of this utility model are: This invention achieves precise control over the atomization, transport, and action of biological dust suppressants by constructing an integrated collaborative technology system encompassing "pneumatic transport, multi-stage swirling atomization, intelligent monitoring and control, and adaptation of biological dust suppressants." The pneumatic transport mechanism, with coaxially arranged upstream and downstream fans forming a directional and stable airflow field, ensures the forced intake of dust-laden air and the effective discharge of purified air. A filter screen pre-removes large particles, while the flared pipe effectively reduces kinetic energy loss at the air outlet, improving transport efficiency. The multi-stage swirling atomization mechanism is the core innovation of the system. At least three stages of swirling atomizing discs with adjacent atomizing holes distributed at a 30° phase angle, combined with a high-pressure atomizing nozzle and a dust suppressant channel within the rotating shaft, allow the biological dust suppressant to undergo multiple shearing, collision, and swirling fragmentation processes under high-speed rotation, ultimately producing ultrafine droplets with small particle size and uniform distribution. This multi-stage, phase-shifting atomization method greatly increases the specific surface area and spatial coverage uniformity of droplets, significantly improving the collision probability and adhesion efficiency between droplets and fine dust particles, thereby achieving efficient agglomeration and settling of dust, especially respirable dust.

[0019] The intelligent monitoring and control module integrates an airflow meter, pressure sensor, and dust concentration sensor to capture real-time airflow dynamics parameters and dust load changes within the system, uploading the data to the control unit. Based on a built-in algorithm model, the control unit performs closed-loop control of the upstream induced draft fan, downstream forced draft fan speed, and plunger pump flow rate, achieving dynamic matching and adaptive adjustment of the dust suppressant injection volume and airflow conditions. This not only ensures optimal dust suppression under varying dust concentrations but also effectively avoids excessive use and waste of dust suppressant, demonstrating innovative precision control and energy conservation.

[0020] The system is specifically designed to maintain the activity and ensure the efficient application of biological dust suppressants. The corrosion-resistant storage tank, plunger pump, and dust suppressant channel within the biological dust suppressant adapter unit ensure stable dust suppressant delivery and meet corrosion protection requirements. Specifically, temperature and pH sensors installed within the corrosion-resistant storage tank monitor the physicochemical state of the dust suppressant storage environment in real time, ensuring the stability of the active ingredients in the biological dust suppressant and providing a fundamental guarantee for the continuous and efficient operation of the system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment; The components represented by the reference numerals in the diagram are: 1. Filter screen; 2. Exhaust fan; 3. Cyclone atomizing disc; 4. Flow sensor; 5. Pressure sensor; 7. Control unit; 8. Drainage tank; 9. Flared pipe; 10. Blower; 11. Dust suppressant channel; 12. Corrosion-resistant storage tank; 13. Plunger pump; 14. Temperature sensor; 15. pH sensor; 16. Dust concentration sensor; 17. Dust collection box. Detailed Implementation

[0022] The technical means adopted to achieve the intended purpose of this utility model will be further described below with reference to the accompanying drawings of the embodiments of this utility model.

[0023] Example See Figure 1 The dust suppression system of this invention, which uses atomized biological dust suppressant, has a main structure of a cylindrical dust collection box 17 open at both ends. Inside the dust collection box 17, a rotating shaft is installed along the airflow direction. An induced draft fan 2 is located upstream of the shaft, and a blower 10 is located downstream. The induced draft fan 2 is located at the left air inlet of the dust collection box 17, and a removable filter screen 1 is installed at the air inlet of the dust collection box 17 to filter out larger particulate impurities when dusty air enters the system, protecting internal components and reducing the load on subsequent processing. The blower 10 is located at the right air outlet of the dust collection box 17, and a gradually expanding flare pipe 9 is connected to the air outlet of the dust collection box, which allows the purified airflow to diffuse smoothly and with low resistance into the external environment.

[0024] Multiple sets of swirling atomizing discs 3 are fixedly installed on the rotating shaft. These three sets of atomizing discs are evenly arranged along the axial direction at a certain distance. The swirling atomizing discs 3 are frame structures with an annular frame and spray beams. Multiple spray beams are provided, extending radially along the annular frame, and the multiple spray beams are evenly distributed along the circumference of the annular frame. Preferably, three sets of swirling atomizing discs are evenly spaced, and four spray beams are arranged in an array along the circumference of the annular frame. Several atomizing holes (or installed atomizing nozzle channels) are linearly arrayed on the spray beams.

[0025] The key feature of this application is that the atomizing holes or atomizing nozzle channels on two adjacent swirl atomizing discs 3 are not aligned, but are staggered by a phase angle of 20°-40° (preferably 30°). A dust suppressant channel 11 is machined axially inside the rotating shaft. One end of this channel is connected to the dust suppressant channel 11 from the biological dust suppressant adapter unit via a rotary sealing joint, and the other end is connected to the atomizing holes or atomizing nozzles on the spray beams of each swirl atomizing disc via a distribution channel, for conveying the biological dust suppressant.

[0026] The biological dust suppressant adaptation unit mainly includes a corrosion-resistant storage tank 12, which is fixedly installed outside the dust collector housing 17. The outlet of the corrosion-resistant storage tank 12 is connected to a plunger pump 13 via a pipe. The outlet of the plunger pump 13 is then connected to the dust suppressant channel 11 within the rotating shaft via the aforementioned dust suppressant channel 11, forming a dust suppressant supply path. To monitor the activity preservation conditions of the dust suppressant in real time, a temperature sensor 14 and a pH sensor 15 are installed inside the corrosion-resistant storage tank 12. The biological dust suppressant used in the system adaptation is a biological dust suppressant purified from Bacillus subtilis fermentation broth.

[0027] The intelligent monitoring and control module is responsible for the system's operation monitoring and intelligent adjustment. Inside the dust collector housing 17, there is an airflow meter 4 (for monitoring airflow), a pressure sensor 5 (for monitoring internal system pressure), a dust concentration sensor 16 (for monitoring dust concentration before and after purification), and a control unit 7. The aforementioned airflow meter 4, pressure sensor 5, dust concentration sensor 16, temperature sensor 14, and pH sensor 15 are all connected to the control unit 7 via signal lines. The output control terminal of the control unit 7 is connected to the motor drivers of the upstream induced draft fan 2 and the downstream blower fan 10, as well as the controller of the plunger pump 13, forming a closed-loop control circuit.

[0028] At the bottom of the dust collection box 17, there is an inclined water collection slope, and at the lowest point, there is a drainage trough 8. A drain valve is installed at the bottom of the drainage trough 8 to collect and periodically discharge liquid waste such as condensate and sludge generated during system operation.

[0029] The system operates as follows: After startup, the upstream induced draft fan 2 and the downstream blower 10 work synchronously, forming a directional airflow from left to right within the dust collection chamber 17. Dust-laden air is initially filtered by the filter screen 1 and then drawn into the chamber. Simultaneously, the plunger pump 13 pumps the biological dust suppressant from the corrosion-resistant storage tank 12 through the dust suppressant channel 11 into the dust suppressant channel 11 within the rotating shaft, and delivers it to the atomizing holes or nozzles on each swirl atomizing disc 3. The rotating shaft drives the swirl atomizing disc 3 to rotate at high speed. Under centrifugal force, the biological dust suppressant is ejected from the atomizing holes or nozzles and subjected to shearing by the high-speed airflow and the impact and rotation of the atomizing disc structure. Because adjacent atomizing discs are arranged with a staggered phase angle, the droplets' trajectory and breakup process are disturbed at different angles each time they pass through a single atomizing disc. Through multi-stage, multi-angle coordinated breakup, an ultrafine droplet cluster with extremely small particle size and a very narrow distribution is ultimately formed. These ultrafine droplets with high specific surface area mix thoroughly and uniformly with dust particles in the dust-laden airflow. Through mechanisms such as collision, interception, and diffusion, the dust particles are wetted, adhered, and agglomerated, resulting in a rapid increase in particle size and weight. The agglomerates settle under gravity or continue to move downstream with the airflow to further agglomerate before finally settling.

[0030] The purified air is drawn out of the system through the flared pipe 9 by the blower 10. Throughout the process, the airflow meter 4, pressure sensor 5, and dust concentration sensor 16 monitor the system's operating status in real time, while the temperature sensor 14 and pH sensor 15 monitor the dust suppressant status. All signals are transmitted to the control unit 7. The control unit 7 adjusts the pump speed and fan speed based on preset optimization algorithms, such as dust concentration feedback, and dynamically adjusts the flow rate of the plunger pump 13 and the speed of the upstream induced draft fan 2 and the downstream blower 10. This achieves precise matching between the dust suppressant supply and the dust load and airflow conditions, ensuring efficient dust suppression while maximizing the conservation of dust suppressant and energy consumption. The settled liquid and solid mixture collects in the bottom drainage tank 8 and is periodically discharged through the drain valve.

[0031] This utility model effectively solves the key technical bottlenecks of traditional atomizing dust suppression equipment, such as poor atomization uniformity, low level of intelligence, and low utilization rate of dust suppressant, through multi-unit structural innovation and systematic integration. It achieves simultaneous improvement in dust suppression efficiency, dust suppression durability, and operational economy, and has outstanding practical value and promotion prospects in the field of high-risk dust pollution control in mining, construction, and other fields.

Claims

1. A dust suppression system using atomized biological dust suppressant, comprising a cylindrical dust collection box (17) open at both ends, characterized in that, The dust collector box (17) has a rotatable rotating shaft inside along the airflow direction. An induced draft fan (2) is provided upstream of the rotating shaft, and an expelling fan (10) is provided downstream. Multiple sets of swirling atomizing discs (3) are fixedly installed on the rotating shaft. The swirling atomizing discs (3) are frame structures with an annular frame and multiple spray beams that extend radially and are evenly distributed circumferentially. Several atomizing holes or atomizing nozzles are provided on the spray beams. The atomizing holes or atomizing nozzle channels on two adjacent swirl atomizing discs (3) are staggered at equal phase angles; the rotating shaft is provided with an axial dust suppressant channel (11), which is connected to the biological dust suppressant adapter unit through a rotary sealing joint; The biological dust suppressant adapter unit includes a corrosion-resistant storage tank (12) and a plunger pump (13); The dust collector housing (17) is also equipped with a control unit (7), the output end of which is connected to the control end of the induced draft fan (2), the blower (10) and the plunger pump (13).

2. The system according to claim 1, characterized in that, The atomizing holes or atomizing nozzle channels on two adjacent swirling atomizing discs (3) are staggered by a phase angle of 20°-40°.

3. The system according to claim 1, characterized in that, The biological dust suppressant adapter unit also includes a temperature sensor (14) and a pH sensor (15) installed in the corrosion-resistant storage tank (12), which are connected in communication with the control unit.

4. The system according to any one of claims 1-3, characterized in that, The dust removal box (17) is also equipped with an air flow meter (4), a pressure sensor (5) and a dust concentration sensor (16); the air flow meter (4), pressure sensor (5), dust concentration sensor (16), temperature sensor (14) and pH sensor (15) are all connected to the control unit (7).

5. The system according to claim 1 or 2, characterized in that, The swirling atomizing disk (3) is provided in three sets, which are arranged at equal intervals along the axis of rotation.

6. The system according to claim 1, characterized in that, The spray beam consists of four pieces, which are evenly arranged in an array along the circumference of the ring frame.

7. The system according to claim 1, characterized in that, The atomizing holes or atomizing nozzle channels on the spray beam of the swirling atomizing disc (3) are arranged in a linear array.

8. The system according to claim 1, characterized in that, The dust collector housing (17) is connected to a gradually expanding flare pipe (9) at its air outlet.

9. The system according to claim 1, characterized in that, The bottom of the dust collector box (17) is provided with an inclined water collection slope, and the lowest point is connected to a drainage trough (8) with a drain valve.

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