CN204436447U - Differential mine dustfall agent automatic adding device - Google Patents

Abstract

The utility model is specifically a pressure-difference type mining dust-reducing agent automatic adding device, which solves the problems of high energy consumption, complex structure and high failure rate in the existing dust-reducing device. The bottom of the liquid storage tank is provided with a filtrate net and a valve body integration box, and the top of the liquid storage tank is provided with an exhaust valve, a liquid filling port and a pressure air pipe; a liquid bag is provided in the dosing tank; one end of the jet negative pressure pipe is provided with a The other end of the water inlet pipe and the jet negative pressure pipe is provided with an impeller agitator; a diversion pipe is arranged between the valve body integrated box and the liquid inlet of the liquid bag, and the one-way throttle valve and the back pressure valve are arranged in the diversion pipe Above, a dosing tube is set between the liquid outlet of the liquid bag and the side wall of the jet negative pressure tube, and a flow meter and a quantitative valve are set on the dosing tube; a side pressure tube is set between the dosing box and the jet negative pressure tube. The water inlet pipe, and the water inlet control valve is arranged on the side pressure water inlet pipe. The utility model realizes the automatic addition of medicaments, effectively reduces the dust concentration on the excavation face, and greatly improves the working environment of the excavation face.

Description

Differential pressure mine dust suppressant automatic adding device

technical field

The utility model relates to a coal mine dust-reducing device, in particular to a pressure-difference type mining dust-reducing agent automatic adding device.

Background technique

The coal dust produced in the process of coal mining not only affects the underground working environment, but also seriously threatens the health of workers.

At present, wet dust removal is mainly used in coal dust control, and spray dust suppression is particularly widely used. However, due to the general hydrophobicity of coal dust, in order to increase the wettability of coal dust and improve the efficiency of dust suppression, studies have shown that the use of solutions added with dust suppression agents for spraying It can effectively improve the dust suppression efficiency.

However, the existing method of adding dust-reducing agent to the dust-reducing water pipeline mainly relies on external power sources such as motors or hydraulic pumps, which not only consumes time and energy, but also has a complex structure of the adding device, a high failure rate, and is difficult to use and maintain. Therefore be unfavorable for the effective carrying out of downhole dust work.

Contents of the invention

In order to solve the problems of high energy consumption, complex structure and high failure rate in the existing dust suppression device, the utility model provides a differential pressure mining dust collector with low energy consumption, high accuracy, strong reliability and real-time monitoring. Dust suppressant automatic adding device.

The utility model is realized by adopting the following technical scheme: a pressure difference type mine dust suppressant automatic adding device, including a liquid storage tank, a dosing tank and a jet negative pressure tube; The integrated valve body box is equipped with a one-way throttle valve, a back pressure valve, a quantitative valve, a flow meter, and a water inlet control valve. The top of the liquid storage tank is equipped with an exhaust valve, a liquid filling port, and an underground The pressure air pipe connected to the air pressure port is provided with a pressure reducing valve, a pressure gauge, and a one-way valve in sequence. The side wall of the liquid storage tank is provided with a liquid level gauge, and the bottom of the side wall of the liquid storage tank is provided with a discharge The dosing tank is provided with a liquid bag; one end of the jet negative pressure pipe is provided with a water inlet pipe connected with the downhole static pressure water, and the other end of the jet negative pressure pipe is provided with an impeller agitator connected with it, and the outlet of the impeller agitator The liquid port is provided with an outlet pipe communicating with it, and the water inlet pipe is provided with a pressure reducing valve, a quantitative valve I, and a filter in sequence; a diversion pipe communicating with the two is provided between the valve body integrated box and the liquid inlet of the liquid bag , and the one-way throttle valve and the back pressure valve are arranged on the diversion water pipe, and the dosing pipe connected with the two is arranged between the liquid outlet of the liquid bag and the side wall of the jet negative pressure pipe, and the flow meter, quantitative valve It is arranged on the dosing pipe; between the dosing box and the jet negative pressure pipe, there is a side pressure water inlet pipe which communicates with the two and is located on the left side of the dosing pipe, and the water inlet control valve is set on the side pressure water inlet pipe.

During operation, the dust suppressant is stored in the liquid storage tank, and the pressure wind enters the liquid storage tank through the pressure reducing valve, flow meter and one-way valve of the air pressure pipe. After being filtered by the filtrate net at the bottom of the tank, it enters the liquid bag through the valve body integration box and the diversion pipe, and part of the static pressure water flows into the dosing tank through the side pressure water inlet pipe to provide positive pressure for squeezing the liquid bag. The dedusting agent enters the jet negative pressure pipe through the dosing pipe; the other part of the static pressure water enters the jet negative pressure pipe through the pressure reducing valve, quantitative valve I and filter on the water inlet pipe, and the dust reducing agent and static pressure water are mixed in the jet negative pressure pipe Finally, the high-pressure water flows into the impeller agitator, and the fully mixed dust-reducing agent solution finally flows out of the outlet pipe and directly enters the spray equipment. At the same time, the positive-pressure water in the liquid storage tank passes through the dosing box, side Press the water inlet pipe into the jet negative pressure pipe to further increase the pressure difference; when the equipment needs to be closed, close the pressure reducing valve, pressure reducing valve I, and quantitative valve I in sequence, cutting off the pressure power source, the entire equipment and the pressure air pipe and The water inlet pipes are separated to ensure the normal use of the original pipes, and overcome the problems of high energy consumption, complex structure and high failure rate in the existing dust suppression devices.

The jet negative pressure tube includes a nozzle and a mixing tube on the right side. There is a cavity with a diameter on the left side larger than that on the right side and a conical filter section in the nozzle. A throat with the same diameter as the cavity on the right side of the nozzle is opened in the middle of the mixing tube. There is a negative pressure chamber located outside the nozzle on the left side of the mixing tube, a tapered diffusion hole with a diameter smaller than that on the right side is set on the right side of the mixing tube, and a channel connected to the dosing tube is opened on the left side hole, the left side of the nozzle has a through hole I communicated with the side pressure water inlet pipe.

When the high-speed water flows through the diffusion hole, the pressure in the negative pressure chamber of the jet negative pressure tube decreases. At this time, the automatic addition of the medicament is realized by using the pressure difference formed before and after the liquid bag of the dosing tank.

The utility model uses downhole pressure wind and pressure water as the pressure source, and according to the jet negative pressure principle, utilizes the pressure difference formed before and after the liquid bag of the dosing box to realize the automatic addition of the medicine, effectively reducing the dust concentration on the mining surface, and extremely It greatly improves the working environment of the mining face, improves the work efficiency of underground operators, protects the health of workers, and has the advantages of convenience, quickness, precise adjustment of dosage and low cost.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural diagram of the jet negative pressure tube in Fig. 1 .

In the figure: 1-liquid storage tank, 2-dosing tank, 3-jet negative pressure pipe, 4-filter net, 5-valve body integration box, 6-one-way throttle valve, 7-back pressure valve, 8- Quantitative valve, 9-flow meter, 10-water inlet control valve, 11-exhaust valve, 12-filling port, 13-pressure air pipe, 14-pressure reducing valve, 15-pressure gauge, 16-one-way valve, 17-liquid level gauge, 18-liquid discharge port, 19-liquid bag, 20-water inlet pipe, 21-impeller agitator, 22-water outlet pipe, 23-pressure reducing valve I, 24-quantitative valve I, 25-filter , 26- diversion pipe, 27- dosing pipe, 28- side pressure inlet pipe, 29- nozzle, 30- mixing pipe, 31- cavity, 32- throat cavity, 33- negative pressure chamber, 34- diffusion hole , 35-through hole, 36-through hole I.

Detailed ways

Differential pressure mine dust suppressant automatic adding device, including liquid storage tank 1, dosing tank 2 and jet negative pressure tube 3;

The bottom of the liquid storage tank 1 is provided with a filtrate net 4 and a valve body integration box 5 connected to the filtrate net 4. The valve body integration box 5 is equipped with a one-way throttle valve 6, a back pressure valve 7, a quantitative valve 8, and a flow meter. 9. The water inlet control valve 10, the top of the liquid storage tank 1 is provided with an exhaust valve 11, a liquid filling port 12, a pressure air pipe 13 connected with the downhole air pressure port, and the pressure air pipe 13 is sequentially provided with a pressure reducing valve 14 and a pressure relief valve. Table 15, one-way valve 16, the side wall of the liquid storage tank 1 is provided with a liquid level gauge 17, and the bottom of the side wall of the liquid storage tank 1 is provided with a liquid discharge port 18;

The dosing box 2 is provided with a liquid bag 19;

One end of the jet negative pressure pipe 3 is provided with a water inlet pipe 20 communicating with the downhole static pressure water, the other end of the jet negative pressure pipe 3 is provided with an impeller agitator 21 communicating with it, and the liquid outlet of the impeller agitator 21 is provided with a water outlet communicating with it. The water outlet pipe 22 and the water inlet pipe 20 are successively provided with a pressure reducing valve I23, a quantitative valve I24, and a filter 25;

A diversion water pipe 26 communicating with the valve body integration box 5 and the liquid inlet of the liquid bag 19 is arranged, and the one-way throttle valve 6 and the back pressure valve 7 are arranged on the diversion water pipe 26, and the liquid bag 19 A dosing pipe 27 communicating with the two is provided between the liquid outlet of the liquid outlet and the side wall of the jet negative pressure pipe 3, and the flow meter 9 and the quantitative valve 8 are arranged on the dosing pipe 27; the dosing box 2 and the jet negative pressure A side pressure water inlet pipe 28 communicating with the two and located on the left side of the dosing pipe 27 is arranged between the pipes 3 , and the water inlet control valve 10 is arranged on the side pressure water inlet pipe 28 .

The jet negative pressure pipe 3 includes a nozzle 29 and a mixing tube 30 positioned on the right side. The nozzle 29 has a cavity 31 whose diameter on the left side is greater than that on the right side and the filter section is a conical surface. The throat cavity 32 with the same diameter of the cavity on the right side, the negative pressure chamber 33 outside the nozzle 29 is opened in the left side of the mixing tube 30, the right side of the mixing tube 30 is provided with a tapered diffusion hole whose diameter on the left side is smaller than that on the right side 34. The left side of the mixing tube 30 has a through hole 35 communicated with the dosing pipe 27, and the left side of the nozzle 29 has a through hole I36 communicated with the side pressure water inlet pipe 28.

In the specific implementation process, by adjusting the back pressure valve 7 and the pressure reducing valve I23, the quantitative valve I24, can control and adjust the vacuum degree of positive pressure and jet negative pressure pipe 3 negative pressure chamber 33; By adjusting the one-way throttle valve 6 and quantitative The valve 8 and the flow meter 9 can accurately adjust the dosage of the agent; the exhaust valve 11 is used to discharge the gas in the liquid storage tank 1 after the liquid filling is stopped, and release the pressure in the tank; the liquid discharge port 18 is used to discharge the dust-reducing agent, To clean the liquid storage tank 1.

The impeller agitator 21 is mainly composed of an agitator shell, an impeller, a shaft, and a bearing. The impeller is fixed on the shaft; the power source is provided by downhole pressure water, which enters from the lower end of the agitator to drive the impeller to rotate, and then drives the shaft where the impeller is located to rotate. Because the impeller has a certain helical angle, it can realize the helical rise of the liquid. After the liquid is fully mixed, it will flow out from the upper liquid outlet and directly enter the spraying equipment to achieve the purpose of spraying dust with the solution added with dust suppressant.

Claims (2)

1. a differential mine dustfall agent automatic adding device, is characterized in that: comprise liquid reserve tank (1), add agent case (2) and jet flow negative pressure pipe (3);

Liquid reserve tank (1) inner bottom part is provided with filtrate net (4), the valve body integral box (5) be communicated with filtrate net (4), one-way throttle valve (6) is provided with in valve body integral box (5), counterbalance valve (7), proportional valve (8), flow meter (9), water inlet control valve (10), liquid reserve tank (1) top is provided with outlet valve (11), filling opening (12), the pressure ventilation pipe (13) be communicated with underground pressure air port, pressure ventilation pipe (13) is disposed with reducing valve (14), pressure meter (15), one way valve (16), the sidewall of liquid reserve tank (1) is provided with content gauge (17), and the sidewall bottom of liquid reserve tank (1) is provided with tap hole (18),

Add in agent case (2) and be provided with liquid capsule (19);

One end of jet flow negative pressure pipe (3) is provided with the water inlet pipe (20) be communicated with down-hole static pressure water, the other end of jet flow negative pressure pipe (3) is provided with the impeller-agitator (21) be communicated with it, the liquid outlet of impeller-agitator (21) is provided with the outlet pipe (22) be communicated with it, and (20) are disposed with reducing valve I(23 to water inlet pipe), proportional valve I(24), strainer (25);

The water conservancy diversion water pipe (26) be communicated with both is provided with between valve body integral box (5) and the inlet of liquid capsule (19), and one-way throttle valve (6), counterbalance valve (7) are arranged on water conservancy diversion water pipe (26), the liquid outlet of liquid capsule (19) be provided with between jet flow negative pressure pipe (3) sidewall be communicated with both add agent pipe (27), and flow meter (9), proportional valve (8) are arranged on and add on agent pipe (27); Add to be provided with between agent case (2) with jet flow negative pressure pipe (3) and to be communicated with both and to be positioned at the side pressure water inlet pipe (28) adding agent pipe (27) left side, and water inlet control valve (10) is arranged on side pressure water inlet pipe (28).

2. differential mine dustfall agent automatic adding device according to claim 1, it is characterized in that: jet flow negative pressure pipe (3) comprises nozzle (29) and is positioned at the mixing tube (30) on right side, have left side diameter in nozzle (29) and be greater than right side diameter and fillter section is the cavity (31) of taper seat, in mixing tube (30), middle part has the trunnion chamber (32) isometrical with nozzle (29) right side cavity, in mixing tube (30), left side has and is positioned at the outside negative pressure cavity (33) of nozzle (29), the right side of mixing tube (30) is provided with the taper diffusion hole (34) that left side diameter is less than right side diameter, mixing tube (30) left side has and the through hole (35) adding agent pipe (27) and be communicated with, nozzle (29) left side has the through hole I(36 be communicated with side pressure water inlet pipe (28)).