A device for reducing dust by throwing ore in kaolin industry

Abstract

The utility model discloses a kind of ore throwing dust falling device for kaolin industry.The device of the utility model includes: ore throwing bucket and ore throwing shed are integrally arranged, ore throwing shed is placed on ore throwing bucket, the top of ore throwing shed is closed, the front side of ore throwing shed is open for vehicle import and export and hangs flexible dustproof door curtain, rear side and left and right side are closed;Ring pipe is placed in the top of ore throwing shed, water mist sprayer is placed on ring pipe and is set downward, high-pressure water pump is connected with ring pipe by main water pipe;Pulse type cloth bag dust collector is placed in the right side of ore throwing shed, the suction port of pulse type cloth bag dust collector is communicated with ore throwing shed, dust collecting hopper is placed below the material drop opening of pulse type cloth bag dust collector, the opening below dust collecting hopper is communicated with ore throwing shed;Negative pressure dust collection fan is connected with pulse type cloth bag dust collector by negative pressure suction pipe.The utility model can capture dust from source and directly recycle dust, while reducing floor area, investment cost and operating energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of dust control, specifically to a dust suppression device for ore feeding in the kaolin industry. Background Technology

[0002] In the kaolin ore feeding process, there is a significant drop (usually 3-5 meters) when the material is unloaded from the transport equipment into the feeding hopper, causing kaolin dust to spread rapidly and form high-concentration dust pollution. Traditional solutions often use independent bag filters or spray towers, which have the following drawbacks: they require separate dust collection rooms and duct systems, resulting in large space occupation; the purchase and installation costs of large dust collection equipment are high, leading to high investment costs; they require continuous operation of high-power fans, resulting in high energy consumption; the collected dust requires additional treatment, increasing transportation costs, and secondary pollution cannot be avoided. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a dust suppression device for the kaolin industry, which can capture dust at the source and directly recycle the dust, while reducing the footprint, investment cost and operating energy consumption.

[0004] To achieve the above objectives, the present invention proposes the following technical solution: A dust suppression device for ore feeding in the kaolin industry includes an integrated ore shed structure and a two-stage dust suppression system; the integrated ore shed structure includes an integrally set ore feeding hopper and ore feeding shed, the ore feeding shed is placed on the ore feeding hopper, the top of the ore feeding shed is closed, the front opening of the ore feeding shed is an entrance and exit for vehicles and a flexible dust-blocking curtain is hung thereon, and the rear and left and right sides are closed.

[0005] The dual-stage dust suppression system includes an atomizing spray unit and a negative pressure dust removal unit. The atomizing spray unit includes a high-pressure water pump, a main water pipe, a ring pipe, and water mist nozzles. The ring pipe is located at the top of the ore feeding shed, and the water mist nozzles are placed on the ring pipe and facing downwards. The high-pressure water pump is connected to the ring pipe through the main water pipe. The negative pressure dust removal unit includes a pulse-jet bag filter, a dust collection hopper, a negative pressure suction pipe, and a negative pressure dust collection fan. The pulse-jet bag filter is located on the right side of the ore feeding shed, and its absorption port is connected to the inside of the ore feeding shed. The dust collection hopper is located below the discharge port of the pulse-jet bag filter, and its lower opening is connected to the ore feeding shed. The negative pressure dust collection fan is connected to the pulse-jet bag filter through the negative pressure suction pipe.

[0006] Preferably, the spray angle of the water mist nozzle is 90~120° and the atomized particle size is 50~100μm.

[0007] Preferably, the water mist nozzles are divided into two groups, front and rear. The front group of water mist nozzles is tilted at 45° toward the front vehicle entrance and exit of the ore-feeding shed, while the rear group of water mist nozzles is set vertically downward to form a three-dimensional water mist barrier.

[0008] Preferably, the dustproof curtain is made of transparent PVC material, with a segmented design, each segment being 0.8~1.0m wide and extending to 10~15cm above the ground.

[0009] Preferably, it also includes a vibrating motor, which is installed on the outer wall of the ash hopper to prevent dust bridging.

[0010] Preferably, the system further includes an intelligent control system, which comprises a position detection sensor, a material level sensor, and a PLC controller. The position detection sensor is located at the front of the ore feeding shed and is used to detect the vehicle's entry and exit status. The material level sensor is located inside the ore feeding hopper and is used to monitor the material level height. The input terminal of the PLC controller is connected to the material level sensor and the position detection sensor. The output terminal of the PLC controller is connected to the high-pressure water pump and the negative pressure dust collection fan, respectively. The PLC controller controls the spraying duration of the high-pressure water pump and the start / stop and negative pressure adjustment of the negative pressure dust collection fan based on the sensor signal feedback.

[0011] Preferably, the PLC controller controls the start and stop of the high-pressure water pump through a relay, and controls the start, stop and speed of the negative pressure dust collection fan through a frequency converter.

[0012] Preferably, the position detection sensor is a through-beam infrared sensor group, including a transmitter and a receiver, which are installed on both sides of the vehicle entrance and exit of the mining shed at a height of 1~1.2m, and are used to block the light beam and generate a trigger signal when the vehicle enters.

[0013] When the ore-carrying vehicle enters the vehicle entrance / exit of the ore-feeding shed, the infrared beam emitted by the transmitter is blocked by the vehicle. Consequently, the receiver cannot receive the infrared beam and sends a vehicle entry signal to the PLC controller, initiating ore feeding. The PLC controller then sends a start signal to the high-pressure water pump, initiating atomized spraying to form a water mist curtain that settles large dust particles. After the spraying ends, the negative pressure dust collection fan is activated, and the pulse-jet bag filter collects residual dust, which falls into the ash hopper through the discharge port. Once a certain amount of dust accumulates in the ash hopper, it is directly collected into the ore-feeding shed. After ore feeding is completed and the ore-carrying vehicle leaves the vehicle entrance / exit, the infrared beam emitted by the transmitter is received by the receiver, and the PLC controller receives the ore feeding completion signal. At this point, dust collection continues, and the negative pressure dust collection fan is shut down after a delay.

[0014] The pulse-type bag filter and the through-beam infrared sensor group mentioned above are existing technologies.

[0015] Specifically, the vehicle enters the front of the ore feeding shed to feed ore, and at the same time, the atomizing spray unit is activated to form water mist, causing most of the dust to fall into the ore feeding hopper; after the water mist falls, the negative pressure dust removal unit is turned on to collect the remaining dust. The dust enters the ash collection hopper and accumulates to a certain amount before falling directly into the ore feeding hopper, thus achieving dust capture at the source and direct recycling of the dust.

[0016] The beneficial effects of this utility model are as follows: This utility model forms an integrated mining shed structure by placing the ore feeding shed on the ore feeding hopper, thereby reducing the floor space and investment costs.

[0017] This invention employs a two-stage dust suppression system, using a method of spraying followed by dust removal, to capture dust at the source and directly recycle it, thereby effectively reducing the dust removal area, the size of the dust collector, and investment and operating costs.

[0018] By adopting the above solution, this utility model can capture dust at the source and directly recycle and reuse the dust, while reducing the land area, investment cost and operating energy consumption. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the first embodiment.

[0021] Figure 2 This is a schematic diagram of the overall structure of the second embodiment.

[0022] Figure 3 This is a connection diagram of the PLC controller in the second embodiment.

[0023] In the diagram, 1-high pressure water pump, 2-main water pipe, 3-ring pipe, 4-water mist nozzle, 5-mineral feeding shed, 6-dustproof curtain, 7-mineral feeding hopper, 8-ash collection hopper, 9-pulse bag filter, 10-negative pressure suction pipe, 11-negative pressure dust collection fan, 12-transmitter, 13-receiver. Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] First embodiment: like Figure 1 As shown, a dust suppression device for ore feeding in the kaolin industry includes an integrated ore shed structure and a two-stage dust suppression system. The integrated ore shed structure includes an integrally set ore feeding hopper 7 and ore feeding shed 5. The ore feeding shed 5 is placed on the ore feeding hopper 7. The top of the ore feeding shed 5 is closed. The front opening of the ore feeding shed 5 is an inlet and outlet for vehicles and is suspended with a flexible dust-blocking curtain 6. The rear and left and right sides are closed.

[0029] The dual-stage dust suppression system includes an atomizing spray unit and a negative pressure dust removal unit. The atomizing spray unit includes a high-pressure water pump 1, a main water pipe 2, a ring pipe 3, and water mist nozzles 4. The ring pipe 3 is placed at the top inside the ore feeding shed 5, and the water mist nozzles 4 are placed on the ring pipe 3 and facing downwards. The high-pressure water pump 1 is connected to the ring pipe 3 through the main water pipe 2. The negative pressure dust removal unit includes a pulse-jet bag filter 9, a dust collection hopper 8, a negative pressure suction pipe 10, and a negative pressure dust collection fan 11. The pulse-jet bag filter 9 is placed on the right side of the ore feeding shed 5, and the absorption port of the pulse-jet bag filter 9 is connected to the inside of the ore feeding shed 5. The dust collection hopper 8 is placed below the discharge port of the pulse-jet bag filter 9, and the bottom opening of the dust collection hopper 8 is connected to the ore feeding shed 5. The negative pressure dust collection fan 11 is connected to the pulse-jet bag filter 9 through the negative pressure suction pipe 10.

[0030] Specifically, the vehicle enters the front of the ore feeding shed 5 to feed ore, and at the same time, the atomizing spray unit is activated to form water mist, so that most of the dust falls into the ore feeding hopper 7. After the water mist falls, the negative pressure dust removal unit is opened to collect the remaining dust into the ash collection hopper 8. After accumulating to a certain amount, it falls directly into the ore feeding hopper 7, thereby capturing dust at the source and directly recycling the dust.

[0031] Second embodiment: like Figure 2 As shown, a dust suppression device for ore feeding in the kaolin industry includes an integrated ore shed structure and a two-stage dust suppression system. The integrated ore shed structure includes an integrally set ore feeding hopper 7 and ore feeding shed 5. The ore feeding shed 5 is placed on the ore feeding hopper 7. The top of the ore feeding shed 5 is closed. The front opening of the ore feeding shed 5 is an inlet and outlet for vehicles and is suspended with a flexible dust-blocking curtain 6. The rear and left and right sides are closed.

[0032] The dual-stage dust suppression system includes an atomizing spray unit and a negative pressure dust removal unit. The atomizing spray unit includes a high-pressure water pump 1, a main water pipe 2, a ring pipe 3, and water mist nozzles 4. The ring pipe 3 is placed at the top inside the ore feeding shed 5, and the water mist nozzles 4 are placed on the ring pipe 3 and facing downwards. The high-pressure water pump 1 is connected to the ring pipe 3 through the main water pipe 2. The negative pressure dust removal unit includes a pulse-jet bag filter 9, a dust collection hopper 8, a negative pressure suction pipe 10, and a negative pressure dust collection fan 11. The pulse-jet bag filter 9 is placed on the right side of the ore feeding shed 5, and the absorption port of the pulse-jet bag filter 9 is connected to the inside of the ore feeding shed 5. The dust collection hopper 8 is placed below the discharge port of the pulse-jet bag filter 9, and the bottom opening of the dust collection hopper 8 is connected to the ore feeding shed 5. The negative pressure dust collection fan 11 is connected to the pulse-jet bag filter 9 through the negative pressure suction pipe 10.

[0033] It also includes an intelligent control system, which comprises a position detection sensor, a material level sensor, and a PLC controller. The position detection sensor is located at the front of the ore feeding shed 5 to detect the vehicle's entry and exit status; the material level sensor is located inside the ore feeding hopper 7 to monitor the material level height; the input terminal of the PLC controller is connected to the material level sensor and the position detection sensor; the output terminal of the PLC controller is connected to the high-pressure water pump 1 and the negative pressure dust collector fan 11, respectively. Figure 3 As shown.

[0034] The output of the PLC controller is connected to the high-pressure water pump 1 via an intermediate relay to control the start and stop of the high-pressure water pump 1; the output of the PLC controller controls the start, stop and speed of the negative pressure dust collector fan 11 via a frequency converter.

[0035] The position detection sensor is a through-beam infrared sensor array, including a transmitter 12 and a receiver 13, which are respectively installed on both sides of the vehicle entrance and exit of the ore loading shed 5 at a height of 1~1.2m. It is used to block the light beam and generate a trigger signal when a vehicle enters. Figure 2 As shown.

[0036] Specifically, the PLC controller has a pre-set control program with the following workflow: When the ore-carrying vehicle enters the vehicle entrance / exit of the ore-feeding shed 5, the infrared beam emitted by the transmitter 12 is blocked by the ore-carrying vehicle. Consequently, the receiver 13 cannot receive the infrared beam and sends a vehicle entry signal to the PLC controller, and the vehicle begins ore feeding. The PLC controller then sends a start signal to the high-pressure water pump 1 to begin atomizing spraying, forming a water mist curtain to settle large dust particles. After the spraying ends, the high-pressure water pump is automatically shut off, and the negative pressure dust collector 11 is started to run at high speed. The pulse bag filter 9 collects residual dust, which falls into the ash hopper 8 through the discharge port. When the dust in the ash hopper 8 accumulates to a certain amount, it is directly collected into the ore-feeding hopper. After the ore feeding is completed, the ore-carrying vehicle leaves the vehicle entrance / exit. At this time, the infrared beam emitted by the transmitter 12 is received by the receiver 13, and the PLC controller receives the ore feeding end signal. At this time, dust collection continues, and the negative pressure dust collector 11 is shut off after a delay.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust suppression device for ore feeding in the kaolin industry, characterized in that: The system includes an integrated mining shed structure and a two-stage dust suppression system. The integrated mining shed structure comprises an integrally set ore-feeding hopper and a ore-feeding shed, with the shed positioned on top of the hopper. The top of the shed is closed, with the front opening serving as a vehicle entrance / exit and adorned with a flexible dust-blocking curtain. The rear and left / right sides are closed. The two-stage dust suppression system includes an atomizing spray unit and a negative pressure dust removal unit. The atomizing spray unit includes a high-pressure water pump, a main water pipe, a ring pipe, and water mist nozzles. The ring pipe is located at the top inside the ore-feeding shed, and the water mist nozzles... The high-pressure water pump is connected to the ring pipe via a main water pipe and positioned downwards on the ring pipe. The negative pressure dust removal unit includes a pulse-jet bag filter, a dust collection hopper, a negative pressure suction pipe, and a negative pressure dust collection fan. The pulse-jet bag filter is positioned on the right side of the ore feeding shed, and its absorption port is connected to the inside of the ore feeding shed. The dust collection hopper is positioned below the discharge port of the pulse-jet bag filter, and its lower opening is connected to the ore feeding shed. The negative pressure dust collection fan is connected to the pulse-jet bag filter via a negative pressure suction pipe.

2. The dust suppression device for ore feeding in the kaolin industry according to claim 1, characterized in that: The spray angle of the water mist nozzle is 90~120°, and the atomized particle size is 50~100μm.

3. The dust suppression device for ore feeding in the kaolin industry according to claim 1, characterized in that: The water mist nozzles are divided into two groups, front and rear. The front group of water mist nozzles is tilted at 45° toward the vehicle entrance and exit at the front of the ore-feeding shed, while the rear group of water mist nozzles is set vertically downward to form a three-dimensional water mist barrier.

4. The dust suppression device for ore feeding in the kaolin industry according to claim 1, characterized in that: The dustproof curtain is made of transparent PVC material and has a segmented design. Each segment is 0.8 to 1.0 meters wide and extends to 10 to 15 centimeters above the ground.

5. A dust suppression device for ore feeding in the kaolin industry according to claim 1, characterized in that: It also includes a vibratory motor, which is installed on the outer wall of the ash collection hopper.

6. A dust suppression device for ore feeding in the kaolin industry according to claim 1, characterized in that: It also includes an intelligent control system, which includes a position detection sensor, a material level sensor and a PLC controller. The position detection sensor is placed on the front side of the ore feeding shed; the material level sensor is located inside the ore feeding hopper; the input terminal of the PLC controller is connected to the material level sensor and the position detection sensor, and the output terminal of the PLC controller is connected to the high-pressure water pump and the negative pressure dust collection fan, respectively.

7. A dust suppression device for ore feeding in the kaolin industry according to claim 6, characterized in that: The position detection sensor is a through-beam infrared sensor group, including a transmitter and a receiver, which are installed on both sides of the vehicle entrance and exit of the ore loading shed, at a height of 1~1.2m.

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