Wet dust removal system for fixed-point unloading area

Abstract

The utility model relates to the field of dust removal, and discloses a fixed-point unloading area wet dust removal system which comprises a trapping cover, a wet dust remover, a fan, a chimney, a closed chamber, an electric roller shutter door, a dry fog dust suppression system, an electric control air valve, a vehicle detector, a visual sensor and a PLC (Programmable Logic Controller) which are connected in sequence, the closed chamber is arranged outside the discharging area in a surrounding mode, the electric roller shutter door is arranged on the closed chamber, a dry fog spray head of the dry fog dust suppression system is arranged in the closed chamber, the electric control air valve is arranged on a ventilation pipeline connecting the collecting cover and the wet dust remover, and the vehicle detector is arranged outside the closed chamber and located below the electric roller shutter door. The visual sensor is arranged outside the closed chamber and located above the electric roller shutter door, the signal input end of the PLC is in communication connection with the vehicle detector and the visual sensor, and the signal output end of the PLC is in electric signal connection with the dry fog dust suppression system and the electric control air valve. The dust concentration at the inlet of the dust removal system can be reduced, and the energy consumption of the dust removal system can also be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal field especially relates to a fixed point unloading area wet dust removal system. BACKGROUND

[0002] In the non-converter slag storage plant of the steel plant, various non-converter slags with different dry and wet degrees are stored, and a large amount of dust is raised in the process of storage and treatment, the dust raising place is not fixed, part of the raw materials also have a certain heat to generate a large amount of steam dust, and the steam dust contains a large amount of returned ore and iron powder and other materials, so that there is obvious steam dust in the warehouse, which affects the plant environment and causes raw material waste. Through the traditional idea of sealing-collection-wet dust removal-discharge, the requirement of ultra-low emission is met, the dust removal system needs large air volume and high cost, and in the process such as converter slag truck transportation, a large amount of instantaneous dust is generated, so that the dust concentration of the inlet of the wet dust removal is too large, the dust removal efficiency and the emission concentration cannot meet the requirement of ultra-low emission.

[0003] Therefore, the application provides a fixed point unloading area wet dust removal system to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the problems that the existing dust removal system needs large capacity and high cost, and a large amount of dust is generated during vehicle unloading, which makes the dust concentration of the inlet of the dust removal system too large, resulting in that the dust removal efficiency and the emission concentration cannot meet the requirement of ultra-low emission. Therefore, the utility model provides a fixed point unloading area wet dust removal system.

[0005] The utility model adopts the technical scheme that:

[0006] A fixed point unloading area wet dust removal system is provided, which comprises a capture cover, a wet dust collector, a fan and a chimney connected in sequence, the capture cover is arranged obliquely above the unloading area, and further comprises an enclosed room, an electric roller shutter door, a dry fog dust suppression system, an electric control air valve, a vehicle detector, a visual sensor and a PLC controller, wherein: the enclosed room is arranged outside the unloading area, the electric roller shutter door is arranged on the enclosed room and serves as a vehicle unloading port, the dry fog spray head of the dry fog dust suppression system is arranged in the enclosed room and is used for dust suppression during vehicle unloading, the electric control air valve is arranged on the ventilation pipeline connecting the capture cover and the wet dust collector, the vehicle detector is arranged outside the enclosed room below the electric roller shutter door and is used for detecting vehicles, the visual sensor is arranged outside the enclosed room above the electric roller shutter door and is used for detecting whether the hopper of the vehicle is lifted, and the signal input end of the PLC controller is connected with the vehicle detector and the visual sensor in communication, and the signal output end of the PLC controller is connected with the dry fog dust suppression system and the electric control air valve in electrical signal.

[0007] In some alternative embodiments, the ventilation pipe is also connected with a spray head through a spray pipe, and a spray pump is arranged on the spray pipe and electrically connected with the PLC controller.

[0008] In some alternative embodiments, the dry fog spray head comprises at least one row of first dry fog spray heads arranged along the width direction of the electric roller shutter door and arranged above the electric roller shutter door, and a plurality of rows of second dry fog spray heads arranged at equal intervals and arranged below the capture cover.

[0009] In some alternative embodiments, the dry fog spray head further comprises a plurality of rows of third dry fog spray heads arranged transversely below the electric roller shutter door.

[0010] In some alternative embodiments, the vehicle detector comprises a detector coil embedded in the floor and a detector box electrically connected with the detector coil and arranged on the closed chamber, and the detector box is in communication connection with the PLC controller.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1、The dry fog spray head of the dry fog dust suppression system is arranged in the closed chamber, so that the dust concentration at the inlet of the dust removal system can be effectively reduced when the vehicle is unloading, thereby ensuring that the dust removal efficiency and the emission concentration meet the ultra-low emission requirement; in addition, the dust removal system can also realize the following functions by using the PLC controller: the electric roller shutter door is opened when the vehicle detector senses the vehicle signal; the dry fog dust suppression system is started, and the electric control air valve and the spray pump are opened when the visual sensor detects the dumping signal of the vehicle hopper; the electric roller shutter door is closed after the vehicle detector detects that the vehicle has driven away after unloading, and the electric control air valve, the spray pump and the dry fog dust suppression system are closed after a set time. This design only opens the electric control butterfly valve of the unloading area when the vehicle is unloading, which is beneficial to ensuring the air volume of each unloading area and reducing the energy consumption of the dust removal system.

[0013] 2、The first, second and third dry fog spray heads are arranged in the above manner, which has good dust suppression effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art, wherein:

[0015] Figure 1 is the planar arrangement drawing of the wet dust removal system of the fixed-point unloading area provided by the utility model;

[0016] Figure 2 is Figure 1 A perspective view of the discharge area provided.

[0017] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0018] Closed room 1, electric roller shutter door 2, capture cover 3, dry fog nozzle 4, first dry fog nozzle 4A, second dry fog nozzle 4B, third dry fog nozzle 4C, wet dust collector 5, fan 6, chimney 7, electric control air valve 8, vehicle detector 9, detector coil 9.1, detector box 9.2, visual sensor 10, nozzle 11, spray pump 12. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application;

[0022] In addition, the terms "first", "second", etc. described in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features referred to or implying the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that a person skilled in the art can realize, when the combination of the technical solutions appears contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope required by the utility model.

[0024] Embodiment: a fixed-point unloading area wet dust removal system, as shown in the accompanying drawings Figure 1 and the accompanying drawings Figure 2 As shown in the accompanying drawings, it comprises a closed room 1, an electric roller shutter door 2, a capture hood 3, a dry fog dust suppression system, a wet dust remover 5, a fan 6, a chimney 7, an electric control air valve 8, a vehicle detector 9, a visual sensor 10 and a PLC controller, wherein:

[0025] The closed room 1 is surrounded outside the unloading area, and is used for isolating the slag and the like in the closed room, preventing the diffusion of dust and steam dust.

[0026] The capture hood 3 is obliquely arranged above the unloading area, the capture hood is connected with the wet dust remover 5 through a ventilation pipeline, the wet dust remover 5, the fan 6 and the chimney 7 are sequentially connected, a negative pressure is generated by the fan, the dust and steam dust in the closed room are extracted to the wet dust remover through the capture hood for dust removal treatment, and the air after the dust removal is discharged by the chimney.

[0027] The electric roller shutter door 2 is arranged on the closed room 1, and is used as a vehicle unloading port.

[0028] The dry fog dust suppression system is arranged in the closed room 1, and is used for dust suppression when the vehicle is unloaded, so that the dust concentration at the inlet of the dust removal system can be effectively reduced when the vehicle is unloaded, thereby ensuring that the dust removal efficiency and the emission concentration meet the ultra-low emission requirement. Preferably, the dry fog nozzle 4 comprises at least one row of a plurality of first dry fog nozzles 4A arranged along the width direction of the electric roller shutter door 2, a plurality of rows of a plurality of second dry fog nozzles 4B arranged at equal intervals and obliquely arranged below the capture hood 3, and a plurality of rows of a plurality of third dry fog nozzles 4C arranged transversely below the electric roller shutter door 2. The first dry fog nozzle is used for forming an atomized water curtain at the electric roller shutter door, and is used as the first dust suppression measure; the second dry fog nozzle sprays fog from the top to the bottom of the unloading area, and is used as the second dust suppression measure; and the third dry fog nozzle sprays fog from both sides of the unloading area, and is used as the third dust suppression measure. The arrangement mode of the dry fog nozzle in the embodiment has good dust suppression effect.

[0029] The electric control air valve 8 is arranged on the ventilation pipeline connecting the capture hood 3 and the wet dust remover 5, and is used as an electrical element for selecting whether the dust removal of the unloading area is selected. Preferably, a nozzle 11 is further connected with a spray pipe in the ventilation pipeline, and a spray pump 12 is further arranged on the spray pipe, so that the spray pump can spray water from the nozzle, and water bath dust collection is realized.

[0030] The vehicle detector 9 is arranged outside the closed room 1 below the electric rolling shutter door 2 and is used for detecting vehicles.

[0031] The visual sensor 10 is arranged outside the closed room 1 above the electric rolling shutter door 2 and is used for processing and analyzing images by using computer vision technology, thereby realizing real-time monitoring of the dumping state of the automobile hopper.

[0032] The signal input end of the PLC controller is in communication connection with the detector box 9.2 of the vehicle detector 9 and the visual sensor, and the signal output end of the PLC controller is in electrical signal connection with the dry fog dust suppression system, the electrically-controlled air valve 8 and the spray pump 12.

[0033] The dust removal system provided by the embodiment can realize the following automatic control by using the PLC controller.

[0034] When the vehicle detector senses the automobile signal, the electric rolling shutter door is opened; when the visual sensor detects the dumping signal of the automobile hopper, the dry fog dust suppression system is started, and the electrically-controlled air valve and the spray pump are opened.

[0035] When the vehicle detector detects that the vehicle has driven away after the dumping is completed, the electric rolling shutter door is closed, and after a set time, the electrically-controlled air valve, the spray pump and the dry fog dust suppression system are closed.

[0036] The above design can realize that the electrically-controlled butterfly valve of the dumping area is opened only when the automobile is dumping, thereby being beneficial to guaranteeing the air volume of each dumping area and reducing the energy consumption of the dust removal system.

[0037] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion by using the utility model specification content or direct or indirect application in other related technical fields is also included in the patent protection range of the utility model.

Claims

1. A wet dust removal system for a fixed-point unloading area, comprising a collection hood, a wet dust collector, a fan, and a chimney connected in sequence, wherein the collection hood is tilted and positioned directly above the unloading area; characterized in that: It also includes an enclosed room, electric rolling shutter door, dry fog dust suppression system, electric air damper, vehicle detector, visual sensor and PLC controller, among which: The closed chamber is arranged outside the unloading area; The electric rolling door is provided on the closed chamber and serves as a vehicle unloading port; The dry mist nozzle of the dry mist dust suppression system is installed in a closed room and is used to suppress dust when vehicles are unloading; The electric-controlled air valve is arranged on the ventilation duct connecting the collection hood and the wet dust collector; The vehicle detector is arranged outside the closed room and below the electric rolling door, and is used to detect vehicles; The visual sensor is located outside the closed room and above the electric rolling door to detect whether the vehicle's hopper is lifted; The signal input end of the PLC controller is communicatively connected to the vehicle detector and the visual sensor, and the signal output end thereof is electrically connected to the dry fog dust suppression system and the electrically controlled air valve.

2. The dust removal system according to claim 1, characterized in that: The ventilation duct is also connected to a nozzle through a spray pipe, and the spray pipe is also provided with a spray pump, and the electrical signal of the spray pump is connected to the PLC controller.

3. The dust removal system according to claim 1, characterized in that: The dry mist nozzles include at least one row of first dry mist nozzles arranged above the electric rolling shutter door along the width direction of the electric rolling shutter door and multiple rows of second dry mist nozzles arranged at equal intervals and obliquely arranged below the collection cover.

4. The dust removal system according to claim 3, characterized in that: The dry mist nozzles also include a plurality of third dry mist nozzles arranged in multiple rows and transversely below the electric rolling door.

5. The dust removal system according to claim 1, characterized in that: The vehicle detector comprises a detector coil buried in the bottom surface and a detector box arranged on the closed chamber and electrically connected to the detector coil. The detector box is communicatively connected to the PLC controller.

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