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CN-121972067-A - Full-automatic preparation and self-adaptive spraying system and method for vehicle-mounted dust suppressant

CN121972067ACN 121972067 ACN121972067 ACN 121972067ACN-121972067-A

Abstract

The invention discloses a full-automatic preparation and self-adaptive spraying system and method for a vehicle-mounted dust suppressant, and belongs to the technical field of environmental protection. The invention realizes mild dissolution by integrating three modules of automatic preparation, anti-precipitation circulation and environment perception control, negative pressure material suction of a venturi jet device, crushing of aggregates by an online high-shear emulsion pump and tubular static mixer, forms rotational flow by utilizing jet stirring network pipes in a tank to prevent precipitation, and finally dynamically adjusts spraying concentration and flow by a main control PLC unit according to real-time environment data, thereby effectively solving the technical problems of high manual feeding strength, uneven agglomeration and dissolution of high polymer materials, failure of static precipitation of liquid medicine, lack of environment feedback in the spraying process and the like in the traditional dust suppression operation, realizing convenient ground feeding, quick dissolution at a minute level, long-acting uniform and stable liquid medicine and accurate spraying as required, and greatly reducing the consumption of the medicine and water resources while obviously improving dust suppression efficiency.

Inventors

  • LI GANG
  • HAN JIAWANG
  • XU XIUPING
  • JIANG BOYANG
  • YANG YING

Assignees

  • 中钢集团马鞍山矿山研究总院股份有限公司

Dates

Publication Date
20260505
Application Date
20260205

Claims (8)

  1. 1. The vehicle-mounted dust suppressant full-automatic preparation and self-adaptive spraying system comprises a carrier vehicle chassis (100), and is characterized in that a clear water tank (200), a liquid storage tank body (300), a power pump group (400) and an automatic pipeline system (900) are arranged on the carrier vehicle chassis (100), and the system is further integrated with an automatic preparation module (500), an anti-precipitation circulation module (600) and an environment perception and self-adaptive control module (700); The automatic preparation module (500) comprises a low-level receiving hopper (501), a venturi jet device (502), an online high-shear emulsifying pump (503) and a tubular static mixer (505) which are communicated in sequence and used for realizing negative pressure suction, shearing crushing and dissolution of dust suppressant; The anti-sedimentation circulation module comprises a jet stirring net pipe (602) arranged at the bottom end inside the liquid storage tank body (300) and a circulation pump (601) connected with the jet stirring net pipe, and is used for forming rotational flow in the tank body; The environment sensing and self-adaptive control module (700) comprises a main control PLC unit (702), an environment monitoring sensor group (701) and a variable frequency metering pump (801), wherein the main control PLC unit (702) is used for cooperatively adjusting the operation parameters of the power pump group (400) and the variable frequency metering pump (801) according to the data acquired by the environment monitoring sensor group (701) and carrying out double self-adaptive control on the spraying flow and the medicament preparation concentration.
  2. 2. The fully automatic vehicle-mounted dust suppressant preparation and self-adaptive spraying system according to claim 1, wherein a main flow inlet of the venturi jet device (502) is connected with a high-pressure water outlet end of the power pump group (400), and a suction inlet of the venturi jet device is communicated with the low-level receiving hopper (501) through a suction hose (504); The venturi ejector (502) is internally provided with a contraction section (502 a), a throat (502 b), a diffusion section (502 c) and an annular wetting cavity (502 d) positioned behind the throat (502 b) for prewetting the sucked material; The online high-shear emulsification pump (503) is arranged at the downstream of the Venturi ejector (502), at least one stage of shearing unit (503 a) consisting of a high-speed rotor and a fixed stator is arranged in the online high-shear emulsification pump, and the rotor rotating speed is optimized to be 2000-2800 r/min; The tubular static mixer (505) is connected in series with the downstream of the high-shear emulsification pump (503), and a mixing channel is formed by staggered spiral blades (505 a) in the tubular static mixer, so that the dissolution time of 30-60 s is provided.
  3. 3. The full-automatic vehicle-mounted dust suppressant preparation and self-adaptive spraying system according to claim 1, wherein the jet stirring net pipe consists of a central main pipe and a plurality of branch pipes, and a plurality of jet nozzles are arranged on each branch pipe at equal intervals and are used for forming rotational flow in a liquid storage tank body (300); the circulating pump (601) is connected with a liquid level switch arranged on the side wall of the liquid storage tank body (300) in a signal mode, and the circulating pump (601) is configured to be in a pulse intermittent working mode and stops for 5min after working for 30 s.
  4. 4. The full-automatic preparation and self-adaptive spraying system of the vehicle-mounted dust suppressant is characterized in that an environment monitoring sensor group (701) is arranged at the front end of a vehicle head and comprises a laser dust sensor (701 a), an anemoscope (701 b) and a temperature and humidity sensor (701 c), an expert algorithm module and a PID (proportion integration differentiation) adjusting module are integrated in a main control PLC unit (702) and are used for calculating a target liquid medicine concentration value according to environment data and adjusting a variable-frequency metering pump (801) and a power pump group (400) in real time through a PID algorithm, and an online concentration monitor (703 a) and a flowmeter (703 c) are further arranged in an automatic pipeline system (900) and are used for feeding back a system state.
  5. 5. A vehicle-mounted dust suppressant full-automatic preparation and self-adaptive spraying method, which is realized based on the vehicle-mounted dust suppressant full-automatic preparation and self-adaptive spraying system according to any one of claims 1-4, and is characterized by comprising the following steps: Step one, automatic preparation, namely sucking dust suppressant raw materials from a low-level receiving hopper (501) by utilizing high-speed fluid vacuum negative pressure generated by a power pump set (400) through a Venturi ejector (502), and flowing through an online high-shear emulsification pump (503) for shearing and crushing and a tubular static mixer (505) for mild dissolution; Step two, anti-sedimentation maintenance, namely forming rotational flow in the liquid storage tank body (300) through a circulating pump (601) and a jet stirring net pipe (602), and maintaining the liquid medicine to be uniformly suspended in a pulse intermittent mode; and thirdly, self-adaptive spraying, namely collecting environmental data in real time through an environmental monitoring sensor group (701), and dynamically controlling spraying concentration and flow by a main control PLC unit (702) based on an expert algorithm module and a PID regulating module.
  6. 6. The full-automatic preparation and self-adaptive spraying method of the vehicle-mounted dust suppressant is characterized in that in the automatic preparation step, an annular wetting cavity (502 d) of a venturi jet device (502) pre-wets inhaled dry powder, the rotor speed of an online high-shear emulsification pump (503) is kept at 2000-2800 r/min to reduce the molecular chain shear degradation rate, and a tubular static mixer (505) provides residence time of 30-60 s through a spiral blade (505 a) to ensure that the dust suppressant solubility is more than 99.5%.
  7. 7. The method for fully automatically preparing and self-adaptively spraying a vehicle-mounted dust suppressant according to claim 5, wherein in the anti-sedimentation maintaining step, the circulating pump (601) is operated in an intermittent mode of stopping for 5 minutes after every 30 seconds of operation under the monitoring of the liquid level switch, so as to reduce energy consumption and foam generation, and meanwhile, the jet nozzle sprays liquid medicine to form a rotational flow penetrating through the tank body.
  8. 8. The full-automatic preparation and self-adaptive spraying method of the vehicle-mounted dust suppressant is characterized in that in the self-adaptive spraying step, an expert algorithm module calculates a target liquid medicine concentration value according to data fed back by a laser dust sensor (701 a) and a wind speed and direction instrument (701 b), a PID (proportion integration differentiation) adjusting module compares the target concentration with actual concentration fed back by an online concentration monitor (703 a), a correction signal is generated through a PID algorithm, and the agent adding proportion of a variable-frequency metering pump (801) and the spraying flow of a power pump unit (400) are dynamically adjusted to realize closed-loop cooperative control of a whole system.

Description

Full-automatic preparation and self-adaptive spraying system and method for vehicle-mounted dust suppressant Technical Field The invention relates to the technical field of dust emission control, in particular to a full-automatic preparation and self-adaptive spraying system and method for a vehicle-mounted dust suppressant. Background The traditional dust suppression operation mainly depends on a sprinkler, and the prior art has obvious defects in three aspects of efficient preparation of dust suppressant, maintenance of solution stability and intelligent spraying control, so that the problems are urgently solved through innovative technology. In terms of dust suppressant formulation, existing approaches are generally inefficient and difficult to accommodate with high viscosity materials. The existing preparation modes mainly comprise off-site pre-preparation and simple on-board mixing. The preparation process is complicated, the logistics and time cost is increased, and the high polymer (such as polyacrylamide, sodium carboxymethyl cellulose and the like) is difficult to process by simple mixing on the vehicle. In the prior art, although there is an attempt of a vehicle-mounted mixing device, for example, chinese patent CN102658049a discloses a powder liquid dispensing device mounted on a chassis of a spray vehicle, and powder water mixing is achieved by a high-low speed mechanical stirrer. However, the technology mainly relies on traditional mechanical blade stirring, and for high-viscosity and indissolvable polymer materials, agglomerates wrapping dry powder are extremely easy to form in limited vehicle-mounted space and time, so that effective components are wasted and even a pipeline is blocked, and the maintenance cost and failure rate of equipment are increased due to a complex mechanical transmission structure. Another significant drawback is the solution stability problem. Dust suppressant solutions (especially complex solutions) tend to delaminate or precipitate when left alone. If one operation is not completed, the residual solution tends to fail due to sedimentation before the next use. Most of the existing vehicle-mounted storage tank designs are static storage and lack an active dynamic anti-sedimentation mechanism. Although some industrial stirring stations adopt a circulating anti-precipitation technology, the circulating anti-precipitation technology is not effectively integrated in a mobile sprinkler, so that the problem of continuous front-back concentration unevenness in dust suppression operation is caused, and the stable performance of the dust suppressant is limited. The coarseness of the spray pattern further amplifies the deficiencies of the conventional technique. The traditional operation depends on the experience of a driver, and cannot be accurately regulated and controlled according to environmental parameters. Although some intelligent attempts have been made in the market, for example, chinese patent CN208711305U proposes an automatic spraying device that uses a dust concentration sensor to control the opening of a high-pressure pump and a valve, such prior art techniques generally only achieve "threshold-based on-off control" or simple pressure regulation, and lack the ability to dynamically adjust the key variable of dust suppressant solution concentration. In other words, the prior art fails to realize full-chain closed-loop control of environment sensing, instant preparation, concentration adjustment and precise spraying, and cannot rapidly increase the concentration of the medicament in the case of dust burst, and cannot reduce the concentration in a low-dust environment to save cost. Disclosure of Invention The invention aims to provide a full-automatic preparation and self-adaptive spraying system and method for a vehicle-mounted dust suppressant, which are characterized in that three modules of automatic preparation, anti-sedimentation circulation and environmental perception control are integrated, the venturi jet device is used for absorbing materials under negative pressure, an online high-shear emulsion pump is used for smashing aggregates and a tubular static mixer to realize mild dissolution, jet stirring network pipes in a tank are utilized for forming three-dimensional rotational flow to prevent sedimentation, and finally a main control PLC unit is used for dynamically adjusting spraying concentration and flow according to real-time environmental data, so that the technical problems of high manual feeding strength, uneven agglomeration and dissolution of high polymer materials, invalid standing and sedimentation of liquid medicine, lack of environmental feedback in the spraying process and the like in the traditional dust suppression operation are effectively solved, the ground convenient feeding, the minute-level quick dissolution, the long-acting uniform and stable liquid medicine and the accurate spraying as required are realized, the dust suppression eff