Magnetizing Device and Method for Preparing Magnetized Water for Dust Fall of Underground Coal Mine

Abstract

The disclosure claims a magnetizing device and method for preparing magnetized water for dust fall of an underground coal mine. The device is formed by a plurality of magnetic drums in a parallel connection with connecting elbows in a “U”-shaped arrangement manner. Each magnetic drum consists of an external magnet, an internal magnet, a hollow pressure pipe, a spiral blade, a screen magnet cover, a connecting steel column, a pressure pipe, a closed nut and a flange plate. According to the disclosure, the internal and external magnets are arranged on a spiral flow channel consisting of the hollow pressure pipe, the spiral blade and the pressure blade by means of an alternating arrangement, thereby building an efficient magnetization environment combined by pulse cutting magnetization and spiral turbulence, enabling that the water for dust fall flowing through is magnetized continuously and efficiently.

Claims

1. A magnetizing device for preparing magnetized water for dust fall of an underground coal mine, comprising a magnetic drum (1), a water outlet (5) and a water inlet (9), wherein the magnetic drum (1) comprises a pressure pipe (2), a flange plate (3), an external magnet (12), an internal magnet (13), a hollow pressure pipe (15), a spiral blade (16), a connecting steel column (18) and a closed nut (17); The flange plate (3) is welded at the two ends of the magnetic drum (1); the pressure pipe (2) is connected to the water outlet (5) and the water inlet (9) through the flange plate (3) respectively; and the water outlet (5) and the water inlet (9) are connected to a water inlet and outlet pipe for dust fall respectively; The external magnet (12) is arranged on the outer wall of the pressure pipe (2); the outer walls at the two ends of the hollow pressure pipe (15) are fixed with the inner wall of the pressure pipe (2) through the connecting steel column (18) by welding; the spiral blade (16) is pasted on the inner wall of the pressure pipe (2), and welded with the hollow pressure pipe (15); and the internal magnet (13) is closed inside the hollow pressure pipe (15), and the two ends of the hollow pressure pipe (15) are closed with the closed nut (17).

2. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to claim 1, wherein the magnetic drum (1) is n (plural), and divided into two rows; the water outlet (5) is connected to one end of each of the first row of magnetic drums (1) through a first connecting elbow (7); the water inlet (9) is connected to one end of each of the second row of magnetic drums (1) through a second connecting elbow (7); the other end of each of the first row of magnetic drums (1) is respectively connected to the other end of each of the second row of magnetic drums (1) through one connecting elbow (7), and the magnetic drums are arranged in a “U”-shaped manner in parallel; and valves (4, 8, 10, 11) are arranged at one end of the magnetic drum (1) connected to the water outlet (5) and the water inlet (9) through the connecting elbow (7).

3. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to claim 1, wherein the number n of the magnetic drum (1) is more than or equal to 4, and is an even number; and the magnetic drum (1) has a length of 1.3 m to 1.8 m.

4. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to claim 1, wherein the thread pitch d of the spiral blade (16) is more than or equal to 50 mm, and the spiral blade is welded with the hollow pressure pipe (15) in a closed manner.

5. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to claim 1, wherein the hollow pressure pipe (15) is made of 304# stainless steel and welded with the pressure pipe (2) by virtue of the “V”-shaped connecting steel column (18); the internal threads are provided at the two ends of the hollow pressure pipe (15), and closed with the closed nut (17); and the pressure pipe (2) is made of 304# stainless steel.

6. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to claim 1, wherein the outer wall of the pressure pipe (2) is wrapped by a magnetic shield cover (14) and the external magnet (12) is located between the magnetic shield cover (14) and the pressure pipe (2).

7. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to any of claim 1, wherein the external magnet (12) is arranged around the pressure pipe (2) alternately; and the internal magnet (13) is closed in the hollow pressure pipe (15) and arranged in a crisscross manner.

8. A magnetizing method using the magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to claim 7, comprising the following steps: A. water for dust fall is fed in the water inlet (9) and flowed into the pressure pipe (2), and water flow is controlled by controlling the valves (4, 8, 10, 11); B. the hollow pressure pipe (15), the spiral blade (16) and the pressure pipe (2) build a screw-propelled water magnetizing channel to uniformly magnetize the water; and a magnetic field environment (19) formed by the internal magnet (13) and the external magnet (12) in a staggered arrangement manner and having alternate intensity performs continuous pulse cutting magnetization to water; and the water for dust fall outflows through the water outlet (5).

9. The magnetizing method according to claim 8, wherein the intensity of the magnetic field environment (19) formed by the internal magnet (13) and the external magnet (12) is 300 mT-350 mT.

10. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to any of claim 2, wherein the external magnet (12) is arranged around the pressure pipe (2) alternately; and the internal magnet (13) is closed in the hollow pressure pipe (15) and arranged in a crisscross manner.

11. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to any of claim 3, wherein the external magnet (12) is arranged around the pressure pipe (2) alternately; and the internal magnet (13) is closed in the hollow pressure pipe (15) and arranged in a crisscross manner.

12. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to any of claim 4, wherein the external magnet (12) is arranged around the pressure pipe (2) alternately; and the internal magnet (13) is closed in the hollow pressure pipe (15) and arranged in a crisscross manner.

13. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to any of claim 5, wherein the external magnet (12) is arranged around the pressure pipe (2) alternately; and the internal magnet (13) is closed in the hollow pressure pipe (15) and arranged in a crisscross manner.

14. The magnetizing device for preparing magnetized water for dust fall of the underground coal mine according to any of claim 6, wherein the external magnet (12) is arranged around the pressure pipe (2) alternately; and the internal magnet (13) is closed in the hollow pressure pipe (15) and arranged in a crisscross manner.

Description

DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a front view of Embodiment I of the disclosure;

[0025] FIG. 2 is a top view of Embodiment I of the disclosure;

[0026] FIG. 3 is a sectional view of Embodiment I of the disclosure along an A-A direction;

[0027] FIG. 4 is a diagram of a spiral structure inside a magnetic drum;

[0028] FIG. 5 is a sectional view for arrangement of an internal magnet and an external magnet inside the magnetic drum;

[0029] FIG. 6 is a side view for arrangement of an external magnet inside the magnetic drum;

[0030] FIG. 7 is a distribution diagram of a magnetic induction line on the B-B section of the magnetic drum;

[0031] FIG. 8 is a distribution diagram of a magnetic induction line on the C-C section of the magnetic drum;

[0032] FIG. 9 is a distribution diagram of a magnetic induction line on the whole section of the magnetic drum;

[0033] FIG. 10 is a top view of Embodiment II of the disclosure;

[0034] In the Figure: 1. Magnetic drum, 2. Pressure pipe, 3. Flange plate, 4, 8, 10, 11. Valve, 5. Water outlet, 6. Quick coupling for mine, 7. Connecting elbow, 9. Water inlet, 12. External magnet, 13. Internal magnet, 14. Magnetic shield cover, 15. Hollow pressure pipe, 16. Spiral blade, 17. Closed nut, 18. Connecting steel column, 19. Magnetic field environment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Further description is made below to the disclosure in combination with the drawings.

Embodiment I

[0036] As shown in FIGS. 1-3, a magnetizing device for preparing magnetized water for dust fall of an underground coal mine, comprises a magnetic drum 1, a water outlet 5 and a water inlet 9, wherein the magnetic drum 1 comprises a pressure pipe 2, a flange plate 3, an external magnet 12, an internal magnet 13, a hollow pressure pipe 15, a spiral blade 16, a connecting steel column 18 and a closed nut 17;

[0037] The number of the magnetic drum 1 is four, and the magnetic drum has a length of 1.5 m and is divided into two rows; the flange plate 3 is welded at the two ends of the magnetic drum 1; the water outlet 5 is connected to one end of two of the first row of magnetic drums 1 through a connecting elbow 7 respectively; the water inlet 9 is connected to one end of two of the second row of magnetic drums 1 through the connecting elbow 7 respectively; the other end of two of the first row of magnetic drums 1 is respectively connected to the other end of two of the second row of magnetic drums 1 through one connecting elbow 7, and the magnetic drums are arranged in a “U”-shaped manner in parallel; and valves 4, 8, 10, 11 are arranged at one end of the magnetic drum 1 connected to the water outlet 5 and the water inlet 9 through the connecting elbow 7; the water outlet 5 and the water inlet 9 are connected to a water inlet and outlet pipe for dust fall through a quick coupling 6 for mine respectively; and the number of the magnetic drum 1 can be increased according to the water flow and need of magnetization or the adjustment is achieved by controlling the valves 4, 8, 10, 11 arranged on the channel in a “U”-shaped manner.

[0038] As shown in FIGS. 4-6, the outer wall of the pressure pipe 2 is wrapped by a magnetic shield cover 14, and the external magnet 12 is located between the magnetic shield cover 14 and the pressure pipe 2 alternately; the pressure pipe 2 is made of 304# stainless steel; the internal magnet 13 is closed in the hollow pressure pipe 15 and arranged in a crisscross manner; the hollow pressure pipe 15 is made of 304# stainless steel, and welded to the pressure pipe 2 using the “V”-shaped connecting steel column 18; internal threads are provided at the two ends of the hollow pressure pipe 15, and closed with the closed nut 17; and the spiral blade 16 is pasted on the inner wall of the pressure pipe 2, has a thread pitch d of 50 mm, and is welded with the hollow pressure pipe 15 in a closed manner.

[0039] The disclosure further provides a magnetizing method using the magnetizing device for preparing magnetized water for dust fall of the underground coal mine, comprising the following steps:

[0040] A. water for dust fall is fed in the water inlet 9 and flowed into the pressure pipe 2, and water flow is controlled by controlling the valves 4, 8, 10, 11;

[0041] B. the hollow pressure pipe 15, the spiral blade 16 and the pressure pipe 2 build a screw-propelled water magnetizing channel to uniformly magnetize the water; and a magnetic field environment 19 formed by the internal magnet 13 and the external magnet 12 in a staggered arrangement manner and having alternate intensity performs continuous pulse cutting magnetization to water; (as shown in FIGS. 7-9)

[0042] C. the water for dust fall outflows through the water outlet 5.

[0043] The intensity of the magnetic field environment 19 formed by the internal magnet and the external magnet is 300 mT-350 mT.

[0044] The screw-propelled water magnetizing channel formed by the hollow pressure pipe 15, the spiral blade 16 and the pressure pipe 2 increases the turbulence and magnetic course of the water solution when compared with the straight-through magnetizing channel; the alternate pulse magnetic field environment 19 formed by the internal magnet 13 and the external magnet 12 in a staggered arrangement manner can enable the water molecule and the magnetic field to form a resonance system when compared to a single magnetic field environment, thereby aggravating the molecular motion in the solution, facilitating the breakage of intermolecular hydrogen bonds in the solution, achieving the efficient and uniform magnetization of the water for dust fall, and enhancing the spray and dust fall effect of the solution.

Embodiment II

[0045] Different from Embodiment I, as shown in FIG. 10, the number of the magnetic drum 1 of Embodiment is eight, and four magnetic drums 1 are located in the first row; and one end of the first row of four magnetic drums 1 is respectively connected to the connecting elbow 7 through their flange plates 3, and the connecting elbow 7 is connected to the water outlet 5.

[0046] The above-mentioned embodiments are only preferred embodiments of the disclosure. It should be pointed out that, those ordinary in the art could make several improvements on the premise of not departing from the principle of the disclosure, and these improvements should also be regarded as the protection scope of the disclosure.