CN205225255U - A mine foam dust suppression device - Google Patents

Abstract

A mining foam dust suppression device is suitable for controlling a large amount of dust from the cutting head and shovel plate part of a fully mechanized excavation machine in an underground mining working face of a coal mine, and cleaning the working environment. When the compressed air passes through the two Venturi tees, a negative pressure is generated, so that the foaming agent in the liquid storage tank passes through the Venturi tees together with the compressed air and enters the foaming mixers A and B respectively; the pressure water in the other pipeline also Enter foaming mixer A and B respectively. Water, air, and foaming agent pass through foaming mixers with different fillings, and then sprayed through different nozzles to form foam or water mist respectively, and carry out dust suppression on the working face according to the needs of the site. The utility model has the advantages of simple structure, convenient operation and remarkable dust suppression effect.

Description

A mine foam dust suppression device

technical field

The utility model relates to a mining foam dust suppressing device used in underground coal mines, and is particularly suitable for controlling a large amount of dust from a cutting head and a shovel plate part of a fully mechanized excavator in an underground mining working face of a coal mine.

Background technique

In the process of coal mining, a large amount of dust will be generated. Generally, the concentration of dust in mining work using fully mechanized excavators is very high, which greatly affects the physical and mental health of coal miners on the job site. In order to prevent and control dust, measures such as water spray dust removal or foam dust removal are commonly used underground in coal mines, but they cannot be used consistently due to various problems, and it is difficult to effectively prevent and control dust disasters: when water spray dust removal is used alone, due to the large water consumption , the sprayed water mist moves with the return air, which will make the on-site workers who operate the comprehensive excavator coal mining drenched in a short time; Dust production points reduce dust, but a large amount of foam is piled up at the work site, which blocks the sight of the site workers who operate the fully mechanized excavator for coal mining, and affects the observation, judgment and specific operation of the site situation. As a result, some mining workers simply turn off the dust removal equipment, preferring to work in a dusty environment rather than getting soaked, and do not want to risk driving when the line of sight is unclear and the situation is unclear.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, to provide a simple structure, easy to operate, use the existing compressed air source and water source in the coal mine, do not use other power, do not contain electrical components, safe and reliable, It uses a single foaming agent with less amount of foaming agent, less water consumption, less on-site foam accumulation, and good dust removal effect. It is used as a mining foam dust suppression device for coal mining sites of fully mechanized excavators in coal mines.

In order to achieve the above purpose, a mine foam dust suppression device of the present invention includes a foaming agent liquid storage tank, two foaming agent flowmeters, two water inlet flowmeters, two pressure gauges, two Venturi three Tong, two foaming mixers, four ball valves, one pressure relief valve, two distributors, two U-shaped pin quick connectors, two nozzle holders, four foam nozzles, four water mist nozzles, four Only the Y-shaped three-way interface, the corresponding connecting pipeline and the high-pressure hose of the external part.

The foaming agent is added from the filling port of the foaming agent liquid storage tank, and the foaming agent liquid storage tank is connected to two foaming agent flowmeters through pipelines, and then respectively connected to the Venturi tee; the compressed air is self-intaked The U-shaped pin type quick connector is connected, connected to two ball valves through the pipeline, and then connected to the Venturi three-way respectively; in the Venturi three-way pipe, the compressed air attracts the foaming agent and enters the foaming mixer A or B together; Mine pressure water is connected from the water inlet U-shaped pin-type quick connector, connected to two ball valves through the pipeline, and then connected to the foaming mixer A or B respectively.

The inside of the foaming mixer A is filled with stainless steel wire balls, while the inside of the foaming mixer B is provided with multi-layer interlaced partitions with missing edges. When the mixture mixed with foaming agent, water and compressed air passes through the foaming mixer A filled with stainless steel balls inside, a large amount of foam can be generated. The foam passes through the pipeline to the distributor, and then passes through the KJ25 high-pressure rubber hose——Y-shaped three Communication interface - KJ19 high-pressure rubber hose is connected to multiple foam nozzles fixed on the nozzle frame and sprayed outward. When the mixture mixed with foaming agent, water and compressed air passes through the foaming mixer B with multi-layer staggered edge-cut partitions inside, it leads to the distributor through the pipeline, and then passes through the KJ25 high-pressure rubber hose——Y-shaped three-way interface ——The KJ19 high-pressure rubber hose is connected to multiple water mist nozzles fixed on the nozzle frame and sprayed outward.

The pipeline under the foaming agent liquid storage tank is provided with an emptying valve, which is convenient for emptying the foaming agent stored in the tank when necessary; a pressure gauge is provided on the air inlet pipeline of compressed air, so that the imported compressed air can be observed at any time. The air pressure changes; the water inlet pipeline is also equipped with a pressure gauge, and the pressure changes of the introduced water source can also be observed at any time, so as to facilitate timely adjustments.

The connections between the distributor—KJ25 high pressure hose—Y-shaped tee joint—KJ19 high pressure hose—foam nozzle or water mist nozzle are all connected by mining U-shaped pin type quick connector.

The foaming agent is mainly composed of nonionic surfactants, anionic surfactants, foam stabilizers, wetting agents, film-forming aids, antifreeze agents such as ethylene glycol, alkylphenol polyoxyethylene ether, ethoxylated alkanes Sodium sulfate, modified silicone resin polyether emulsion, etc. Under the same water and air supply conditions, use the same foaming agent, adjust different ball valves, control the ratio of foaming agent, water, and air flow, and form foam or water mist through different mixers and nozzles.

Description of drawings

Fig. 1 is a schematic diagram of a mine foam dust suppression device of the present invention.

In the figure: 1-foaming agent liquid storage tank, 2,3-foaming agent flowmeter, 4,12-water inlet flowmeter, 9,13-pressure gauge, 5,6-Venturi tee, 7,8 , 10, 11-ball valve, 14, 15-U-shaped pin type quick connector, 16, 17-foaming mixer, 18-pressure relief valve, 19, 20-distributor, 29, 42-nozzle holder, 30, 31 , 32, 33-foam nozzle, 43, 44, 45, 46-water mist nozzle, 23, 24, 36, 37-Y-shaped three-way interface, 21, 22, 25, 26, 27, 28, 34, 35, 38, 39, 40, 41-high pressure hose.

detailed description

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

In the accompanying drawings, a mine foam dust suppression device includes a foaming agent liquid storage tank (1), two foaming agent flowmeters (2) (3), two water inlet flowmeters (4) (12) , two pressure gauges (9) (13), two Venturi tees (5) (6), two foaming mixers A (16) B (17), four ball valves (7) (8) ( 10) (11), one pressure relief valve (18), two distributors (19) (20), two U-shaped pin type quick connectors (14) (15), two nozzle holders (29) (42 ), four foam nozzles (30)(31)(32)(33), four water mist nozzles (43)(44)(45)(46), four Y-shaped tee connectors (23)(24) (36)(37), the corresponding connecting pipeline and the high-pressure rubber hose of the external part (21)(22)(25)(26)(27)(28)(34)(35)(38)(39)(40 )(41).

When in use, add the foaming agent from the filling port of the foaming agent liquid storage tank (1), and the foaming agent liquid storage tank (1) is connected to two foaming agent flowmeters (2) (3) respectively through pipelines , and then respectively connected to the Venturi three-way (5) (6); the compressed air enters from the intake U-shaped pin type quick joint (14), and is respectively connected to two ball valves (7) (8) through the pipeline, and then Each is connected to the Venturi tee (5) (6); in the Venturi tee (5) (6) pipe, the compressed air attracts the foaming agent and enters the foaming mixer A (17) or B (16); the mine The pressurized water is connected to two ball valves (10) (11) through pipelines from the water inlet U-shaped pin type quick connector (15), and then connected to foaming mixer A (17) or B (16) respectively.

The inside of the foaming mixer A (17) is filled with stainless steel balls, while the inside of the foaming mixer B (16) is provided with multi-layer staggered edge-cut partitions. When the mixture of foaming agent, water and compressed air passes through the foaming mixer A (17) filled with stainless steel balls inside, a large amount of foam can be generated, and the foam passes through the pipeline to the distributor (19), and then passes through the KJ25 high pressure Rubber hose (21)(22)——Y-shaped three-way interface (23)(24)——KJ19 high-pressure rubber hose (25)(26)(27)(28) is connected to multiple nozzle holders (29) Foam nozzles (30)(31)(32)(33) spray outwards. When the mixture mixed with foaming agent, water and compressed air passes through the foaming mixer B (16) with multi-layer staggered and missing side partitions inside, it leads to the distributor (20) through the pipeline, and then passes through the KJ25 high-pressure rubber hose ( 34)(35)——Y-shaped tee interface (36)(37)——KJ19 high-pressure rubber hose (38)(39)(40)(41) is connected to multiple water mist fixed on the nozzle frame (42) Shower nozzle (43) (44) (45) 46) sprays outwards.

The pipeline under the foaming agent liquid storage tank (1) is provided with an emptying valve (18), which is convenient for emptying the foaming agent stored in the tank when necessary; a pressure gauge ( 9), can observe the pressure change situation of the compressed air that introduces at any time; Also be provided with pressure gauge (13) on the pipeline of water inlet, also can observe the pressure change situation of the water source that introduces at any time, conveniently make corresponding adjustment in time.

The distributor (19) (20) - KJ25 high pressure hose (21) (22) (34) (35) - Y-shaped tee interface (23) (24) (36) (37) - KJ19 High-pressure hose (25)(26)(27)(28)(38)(39)(40)(41)-foam nozzle (30)(31)(32)(33) or water mist nozzle (43)(44 ) (45) and (46) are all connected using U-shaped pin type quick connectors for mining.

The foaming agent is mainly composed of nonionic surfactants, anionic surfactants, foam stabilizers, wetting agents, film-forming aids, antifreeze agents such as ethylene glycol, alkylphenol polyoxyethylene ether, ethoxylated alkanes Sodium sulfate, modified silicone resin polyether emulsion, etc. Under the same water and air supply conditions, use the same foaming agent, adjust different ball valves (7) (8) (10) (11), control the ratio of foaming agent, water, and air flow, and pass through different mixers ( 17) (16) and shower head (30) (31) (32) (33) (43) (44) (45) (46), can form foam or mist respectively.

Claims (3)

1. a mine foam dust-arrest device, it comprises blowing agent fluid reservoir, blowing agent flow meter, feed water flow gauge, Wen's threeway, ball valve, pressure meter, the U-shaped pin snap joint of external compressed air and water, foaming blender, relief valve, distributor, high-pressure rubber pipe, Y shape three-way interface, injection nozzle carrier, foam nozzle, waterfog head, is characterized in that the U-shaped pin snap joint of described blowing agent liquid reserve tank and external compressed air is connected to Wen's threeway by pipeline, and Wen's threeway is connected respectively in the different foaming blender of charges by pipeline; The U-shaped pin snap joint of outer water receiving is also connected respectively to foaming blender by pipeline.

2. a kind of mine foam dust-arrest device according to claim 1, it is characterized in that: utilize the negative pressure that compressed air produces through two Wen's threeways, attract the blowing agent in fluid reservoir after Wen's threeway, to enter charges different foaming blender A, B separately respectively with compressed air; The press water of another pipeline also enters foaming blender A, B respectively; Regulate different ball valves, control the flow proportional of blowing agent, water, gas, via different blenders and shower nozzle, foam or water smoke can be formed respectively.

3. a kind of mine foam dust-arrest device according to claim 1 and 2, it is characterized in that: between described distributor and Y shape three-way interface, the high-pressure rubber pipe that Y shape three-way interface is connected with between foam nozzle or waterfog head all uses the snap joint of mining U-shaped pin to connect.