High-density dry fog three-dimensional drop suppression system for pulverized coal feeding port
By setting up a dry fog box and nozzles at the coal powder feed inlet, and combining them with a light sensor to control the spray, a three-dimensional dry fog zone is formed, which solves the problems of low water suppression efficiency and high water consumption of traditional water mist, and achieves high efficiency in water saving and dust suppression.
Patent Information
- Application Number
- CN202520145624.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing technologies are not ideal for dust suppression at the coal powder feed inlets of coal-fired power plants and metal smelters, especially for areas with high-density dust. Traditional water mist suppression methods suffer from low suppression efficiency, high water consumption, and strong dispersion effect.
A high-density dry fog three-dimensional dust suppression system is adopted. By setting up a dry fog box and dry fog nozzles on the feeding platform, and combining light sensors and solenoid valves to control the spray, a three-dimensional dry fog zone is formed. The system utilizes small-diameter, high-density dry fog to repeatedly spray the fog, and coordinates with the grab bucket position sensor to control the start and stop of the spray, thereby achieving water conservation and efficient dust suppression.
It improves dust suppression, reduces coal dust moisture increase, meets water consumption limits, reduces wind dispersion, and achieves efficient water saving and dust suppression.
Smart Images
Figure CN223747240U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a coal powder feeding port suppression device, more specifically, especially relates to a coal powder feeding port high density dry fog three-dimensional suppression system. BACKGROUND
[0002] At present, in the coal shed yard of large enterprises such as coal-fired power plants and metal smelting plants, the water mist suppression treatment of coal dust flying dust is generally low in suppression efficiency and poor in effect. Especially for the coal powder feeding port and the material hooking of the material yard, the dust is concentrated and the density of the key small area is large, and the suppression effect is not ideal. It is the pain point and difficulty of water mist dust suppression. The reason is that the dust particle size is small, and the basic characteristics are large in quantity, high in density, small in fraction area and long in air time. Because the water content parameter of coal powder has strict limited quantity requirement (the weight of coal powder increased by water mist suppression cannot exceed 1.5-3%), the suppression treatment cannot be simply implemented by increasing the spraying amount. At the same time, the traditional suppression method has many disadvantages, such as: the particle size of water is too large, which can cause the water content of coal powder to exceed the standard, or the large and concentrated mist cannon air volume has a strong blowing effect on coal powder. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at the shortage of the prior art, and provides a coal powder feeding port high density dry fog three-dimensional suppression system with simple structure and good suppression effect.
[0004] The technical scheme of the utility model is achieved as follows: a coal powder feeding port high density dry fog three-dimensional suppression system, comprising feeding platforms arranged on both sides of a material yard, a plurality of feeding ports are uniformly distributed on the feeding platforms, supports are arranged on the feeding platforms at the side of the feeding ports, dry fog boxes are arranged on the supports, a plurality of dry fog nozzles for spraying mist upwards above the feeding ports are uniformly distributed on the dry fog boxes, the dry fog boxes are connected to a mist making base station arranged outside the material yard through pipelines, and a control assembly is arranged on the pipelines between the dry fog boxes and the mist making base station.
[0005] A light sensor for sensing a grab bucket is arranged on the feeding platform on the side close to the material feeding direction, and an electromagnetic valve is arranged on the pipeline of the dry fog box; when the grab bucket moves to the light sensor, the electromagnetic valve is opened to make the dry fog nozzles spray mist upwards above the feeding ports.
[0006] In the coal powder feeding port high density dry fog three-dimensional suppression system, the mist making base station comprises a water tank and a gas storage tank which are connected to the dry fog boxes through pipelines respectively; a mist making host is arranged directly on the water tank and the dry fog box, and a backwashing filter is arranged at the water inlet end of the water tank.
[0007] The support is symmetrically arranged at two sides of the feeding opening, and the dry mist boxes for spraying mist oppositely are arranged on the two supports.
[0008] The support is symmetrically arranged at two sides of the feeding opening, and the dry mist boxes for spraying mist oppositely are arranged on the two supports.
[0009] After the above structure is adopted, the dry mist boxes arranged at one side of the feeding opening form a three-dimensional dry mist area covering the feeding opening, the dry mist has small particle size, high density and uniform distribution, the coal dust particles can be fully touched by the mist and can be touched by the mist for multiple times, the suppression effect can be effectively improved, the weight of the coal powder due to the suppression by the dry mist is not more than 0.1%, the double requirements of limited water consumption and sufficient suppression are met, and the bottleneck of improving the suppression effect is broken.
[0010] Meanwhile, the start and stop of the suppression operation are controlled by the light sensor and the grab bucket position, the dry mist box is prevented from spraying mist when no material is fed, and the water saving effect is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0011] The utility model will be further explained in detail by combining with the embodiment in the drawings, but does not constitute any limitation to the utility model.
[0012] Figure 1 It is the structure schematic diagram of the utility model;
[0013] Figure 2 It is the structure schematic diagram of the utility model A place;
[0014] Figure 3 It is the side view structure schematic diagram of the utility model;
[0015] Figure 4 It is the structure schematic diagram of the mist making base station of the utility model.
[0016] In the drawing: 1, feeding platform; 2, support; 3, dry mist box; 4, dry mist nozzle; 5, mist making base station; 5a, water tank; 5b, gas storage tank; 5c, mist making host; 5d, backwashing filter; 6, control assembly; 7, light sensor; 8, electromagnetic valve. PREFERRED EMBODIMENT
[0017] Refer to Figures 1-4The utility model discloses a high density dry fog three-dimensional suppression and reduction system of coal powder feeding port, including the feeding platform 1 of setting at the both sides of stockyard, the feeding platform 1 is evenly distributed with a plurality of feeding ports, its characterized in that, the feeding platform 1 of feeding port side edge is equipped with support 2, is equipped with dry fog box 3 on support 2, is evenly distributed with a plurality of dry fog nozzles 4 that spray in the upper of feeding port on dry fog box 3, dry fog box 3 is connected to the fog making base station 5 of setting at the stockyard through pipeline, is equipped with control assembly 6 on the pipeline between dry fog box 3 and fog making base station 5. The dry fog box of setting at the side of feeding port forms the three-dimensional dry fog area that covers feeding port in three dimensions above feeding port, because dry fog mist particle size is small, density is high, is evenly distributed, makes coal dust particle can all touch fog, and will touch fog many times, can effectively improve the suppression and reduction effect, and the weight of coal powder humidity because dry fog suppression and reduction increases does not exceed 0.1%, fully satisfies the dual requirement of water consumption limit and sufficient suppression and reduction, and breaks through the promotion bottleneck of suppression and reduction effect.
[0018] And the dry fog type spray's spray distance is short, and the wind is weak, and is only used for nozzle fog making, and there is no axial flow wind, and the blowing effect of fog making wind itself on coal powder is small. The water consumption of dry fog nozzle is about 10-15% of superfine fog nozzle, which can efficiently save water compared with the existing suppression and reduction method.
[0019] The control assembly includes a control cabinet arranged on one side of each feeding port and cooperating with the corresponding dry fog box, a corresponding control circuit, an induction circuit, a PLC module, etc. are arranged in the control cabinet. This is common knowledge for those skilled in the art and will not be described here.
[0020] A light sensor 7 for sensing the grab bucket is arranged on the feeding platform 1 near the incoming material direction, and a solenoid valve 8 is arranged on the pipeline of the dry fog box 3. When the grab bucket moves to the light sensor 7, the solenoid valve 8 opens to make the dry fog nozzles 4 spray upwards of the feeding port. The start and stop of the suppression and reduction operation are controlled by the light sensor cooperating with the position of the grab bucket, which avoids spraying when there is no material in the dry fog box, and can effectively save water.
[0021] The light sensor includes two opposite sensors, and the installation position is set according to the actual situation of the stockyard. The sensing light can be perpendicular to the moving direction of the grab bucket or inclined to the moving direction of the grab bucket.
[0022] The dry fog is arranged and connected in the form of a fog box and a fog box group. The specific form, number of feeding ports, length and arrangement of the material discharge trench can be correspondingly arranged, and the corresponding basic equipment of the appropriate specification can be adjusted and configured according to the terminal operation amount.
[0023] In the embodiment, the fog-making base station 5 comprises a water tank 5a and a gas storage tank 5b connected with the dry fog tank 3 through pipes respectively; a fog-making host 5c is arranged directly in the water tank 5a and the dry fog tank 3, and a backwashing filter 5d is arranged at the water inlet of the water tank 5a. The fog-making host comprises a water pump, a pressure stabilizing tank, auxiliary valves and a main control electric box connected with the water tank, and the specific structure is prior art, which will not be described here. The backwashing filter is arranged to filter the water source, so as to avoid impurities from entering and causing the pipeline and the dry fog nozzle to be blocked.
[0024] Preferably, the supports 2 are symmetrically arranged on both sides of the feeding port, and the dry fog tanks 3 are arranged on the two supports 2 to spray dry fog oppositely. The dry fog suppression on both sides can further increase the dry fog density, so that the coal dust particles can better and more contact with the fog particles, and the suppression effect is further improved. Moreover, the air currents formed by the dry fog on both sides are opposite, which can further reduce the blowing effect on the coal dust.
[0025] In the embodiment, at least two layers of dry fog tanks 3 are arranged on the support 2 in the vertical direction. The multiple layers of dry fog tanks increase the height of the dry fog area, so that the coal dust particles can contact with the fog particles for multiple times when floating, and the suppression effect is further improved.
[0026] The arrangement of the dry fog tanks can be single-sided double-layer type, double-sided double-layer opposite type, three-sided single-layer / double-layer U-shaped ring type and the like according to the site conditions.
[0027] In operation, the fog-making host and the gas storage tank are started to respectively deliver water and gas into the corresponding pipes, the grab bucket in the stockyard moves close to the feeding port to grab the coal dust, when the grab bucket passes the light sensor, the electromagnetic valve is opened, the liquid and gas in the pipes are delivered to the dry fog tanks and sprayed upward through the dry fog nozzles, when the grab bucket moves away from the feeding port and passes the light sensor again, the electromagnetic valve is closed to stop the spraying.
[0028] The above-mentioned embodiments are the preferred embodiments of the present application, which are only used to facilitate the description of the present application, and do not limit the present application in any form. Any person skilled in the art can make partial changes or modifications to the equivalent embodiments within the scope of the technical features of the present application, without departing from the technical features of the present application, and the equivalent embodiments still belong to the scope of the technical features of the present application.
Claims
1. A high-density dry fog three-dimensional suppression and reduction system for coal powder feeding port, comprising a feeding platform (1) arranged on both sides of a stockyard, and a plurality of feeding ports are uniformly distributed on the feeding platform (1), characterized in that, The feeding platform (1) of the feeding port side edge is provided with a support (2), the support (2) is provided with a dry fog box (3), and the dry fog box (3) is uniformly provided with a plurality of dry fog nozzles (4) spraying towards the upper side of the feeding port; the dry fog box (3) is connected to a fog-making base station (5) arranged outside the stockyard through a pipeline, and a control assembly (6) is arranged on the pipeline between the dry fog box (3) and the fog-making base station (5); A light sensor (7) for sensing the grab bucket is arranged on the feeding platform (1) near the incoming material direction side, and an electromagnetic valve (8) is arranged on the pipeline of the dry fog box (3); when the grab bucket moves to the light sensor (7), the electromagnetic valve (8) is opened to make the dry fog nozzles (4) spray towards the upper side of the feeding port.
2. The coal powder feeding port high-density dry fog three-dimensional suppression and reduction system according to claim 1, characterized in that, The fog-making base station (5) comprises a water tank (5a) and a gas storage tank (5b) connected to the dry fog box (3) through pipelines respectively; a fog-making main machine (5c) is directly arranged on the water tank (5a) and the dry fog box (3), and a backwashing filter (5d) is arranged on the water inlet end of the water tank (5a).
3. The coal powder feeding port high-density dry fog three-dimensional suppression and reduction system according to claim 1, characterized in that, The supports (2) are symmetrically arranged on both sides of the feeding port, and the dry fog boxes (3) spraying towards each other are arranged on the two supports (2).
4. The coal dust feeding port high-density dry fog three-dimensional suppression and reduction system according to claim 1, characterized in that, At least two layers of dry fog boxes (3) are vertically arranged on the support (2).