Full-pipe flow filling and discharging device and method

Abstract

The present invention belongs to the technical field of mine filling, and in particular relates to a full-pipe flow filling and discharging device and method, which is characterized by including a box body composed of a vertical section with an open upper part and an inverted cone section at the bottom, a grid screen arranged at the joint of the vertical section and the bottom inverted cone section, a feed pipe arranged at the top of the box body, a water supply pipe arranged at the top of the box body, a discharge pipe arranged at the bottom of the box body and concentrically arranged with the box body at the front end, and a rotation inhibitor arranged at the top of the discharge pipe and concentrically arranged with the discharge pipe. The present invention can not only realize the full-pipe flow discharging and conveying of the filling slurry, but also effectively avoid the mixing of gas during the discharging process.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine filling, and in particular relates to a full-pipe flow filling feeding device and method. Background Art

[0002] As is well known, non-full pipe flow of filling slurry is an important reason for the wear and rupture of vertical filling pipelines or filling boreholes, and the wear at the air-slurry interface is the most serious. During mine filling operations, the stirred filling slurry or the filling slurry with reduced pressure in the deep well inverted section is very likely to mix a large amount of gas during the process of feeding into the vertical filling pipeline or filling borehole, forming a large number of air masses in the filling pipeline or filling borehole, showing an intermittent state of gas and slurry. On the one hand, it makes the pressure in the pipe unstable, causing the receiving hopper to spray slurry, return material, or even block the pipe; on the other hand, the gas is compressed and travels synchronously with the filling slurry. When the compressed gas reaches the discharge end of the filling pipeline, it will instantaneously decompress and generate an air explosion. This air explosion can make the filling pipeline jump and dance, and even cause injury accidents. Summary of the Invention

[0003] The purpose of the present invention is to provide a full-pipe flow filling feeding device and method that can not only achieve full-pipe flow feeding and transportation of filling slurry, but also effectively avoid the mixing of gas during the feeding process.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] The full-pipe flow filling feeding device of the present invention is characterized in that it includes a box body composed of a vertical section with an open upper part and a bottom inverted cone section, a grid screen arranged at the joint of the vertical section and the bottom inverted cone section, a feeding pipe arranged at the top of the box body, a water supply pipe arranged at the top of the box body, a discharge pipe arranged at the bottom of the box body and concentrically arranged with the front end of the box body, and a rotation inhibitor arranged at the top of the discharge pipe and concentrically arranged with the discharge pipe.

[0006] The front end of the feeding pipe is connected to the discharge port of the filling mixing system, the front end of the water supply pipe is connected to the external water supply system, and the ends of the feeding pipe and the water supply pipe both extend into the inner cavity of the box body from the top of the box body.

[0007] The rotation inhibitor includes a top plate, and several baffles perpendicular to the top plate and the side wall of the bottom inverted cone section, which are arranged under the top plate and evenly distributed around the center line of the discharge pipe.

[0008] The inner diameter of the discharge pipe is the same as the inner diameter of the feeding pipe.

[0009] A level gauge is arranged at the top of the box body, and the cone angle α of the bottom inverted cone section of the box body is 120° - 150°.

[0010] An electric switch valve I, an electric flow regulating valve and an electromagnetic flowmeter are provided on the feed pipe. The electric switch valve I is a switch-type electric wear-resistant pipe clamp valve, and the electric flow regulating valve is an adjusting-type electric wear-resistant pipe clamp valve.

[0011] An electric switch valve II is provided on the water supply pipe.

[0012] An electric switch valve III is provided on the discharge pipe. This electric switch valve III is a switch-type electric wear-resistant pipe clamp valve.

[0013] The several baffles are at least 4. The included angle β between the hypotenuse of the baffle and the center line of the discharge pipe is β = 0.5α.

[0014] A filling and discharging method using a full-pipe flow filling and discharging device is characterized by including the following steps:

[0015] (1) Before filling and discharging, first open the electric switch valve II on the water supply pipe to inject water into the box body;

[0016] (2) When the water level reaches the discharging liquid level, close the electric switch valve II, and then open the electric switch valve I and the electric switch valve III for discharging;

[0017] (3) Use the electric flow regulating valve and the electromagnetic flowmeter to adjust the flow rate of the feed pipe so that the liquid level in the box body is maintained between the lowest liquid level and the highest liquid level, and make the filling slurry flow down in a siphon full-pipe state;

[0018] (4) The filling slurry enters the box body through the feed pipe, is screened by the grid to remove large pieces or sundries, and then enters the discharge pipe through the flow channels between the baffles of the anti-rotation device and the top plate and the side wall of the inverted cone section at the bottom of the box body and is fed to the downstream vertical filling pipeline or filling borehole, avoiding the formation of vortices at the outlet of the discharge pipe and causing gas to mix in;

[0019] (5) When the filling and discharging is finished, first close the electric switch valve I on the feed pipe, then open the electric switch valve II on the water supply pipe to inject water into the box body to empty the remaining filling slurry in the vertical pipeline or filling borehole, and finally close the electric switch valve II on the water supply pipe and the electric switch valve III on the discharge pipe in sequence.

[0020] Advantages of the present invention:

[0021] (1) The full-pipe flow filling and discharging device and method of the present invention have a simple structure and convenient operation, can realize the full-pipe flow discharging and conveying of the filling slurry, and reduce pipeline wear;

[0022] (2) The full - pipe flow filling and discharging device and method of the present invention can effectively avoid the formation of vortices at the outlet of the discharge pipe during the discharging process, prevent gas from mixing in, and avoid situations such as spraying, material return, pipe blockage, gas explosion, and cavitation caused by the mixed gas. Indirectly, it prolongs the service life of the pipeline and avoids personal injury accidents caused by the jumping and dancing of the filling pipeline.

[0023] (3) The full - pipe flow filling and discharging device and method of the present invention can screen out large pieces or sundries to avoid pipe blockage caused by them entering the pipeline along with the filling slurry. Brief Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 For the present invention Figure 1 is a top view.

[0026] Figure 3 It is a schematic structural diagram of the anti - rotation device of the present invention.

[0027] Figure 4 For the present invention Figure 3 is a bottom view. Detailed Embodiments

[0028] The following further describes the detailed embodiments of the present invention with reference to the drawings.

[0029] As Figures 1-4 shown, the full - pipe flow filling and discharging device of the present invention is characterized in that it includes a box body 1 composed of a vertical section with an open upper part and a bottom inverted - cone section, a grid screen 2 arranged at the joint of the vertical section and the bottom inverted - cone section, a feed pipe 3 arranged at the top of the box body 1, a water supply pipe 4 arranged at the top of the box body 1, a discharge pipe 5 arranged at the bottom of the box body 1 and concentrically arranged with the front end of the box body 1, and an anti - rotation device 6 arranged at the top of the discharge pipe 5 and concentrically arranged with the discharge pipe 5.

[0030] The front end of the feed pipe 3 is connected to the discharge port of the filling and mixing system, the front end of the water supply pipe 4 is connected to the external water supply system, and the ends of the feed pipe 3 and the water supply pipe 4 both extend into the inner cavity of the box body 1 from the top of the box body 1.

[0031] The anti - rotation device 6 includes a top plate 61 and several baffles 62 arranged under the top plate 61 and evenly distributed around the center line of the discharge pipe 5 and perpendicular to the top plate 61 and the side wall of the bottom inverted - cone section.

[0032] The inner diameter of the discharge pipe 5 is the same as the inner diameter of the feed pipe 3.

[0033] A level gauge is arranged at the top of the box body 1, and the cone angle α of the bottom inverted - cone section of the box body 1 is 120° - 150°.

[0034] An electric switch valve I 31, an electric flow regulating valve 32 and an electromagnetic flowmeter 33 are provided on the feed pipe 3. The electric switch valve I 31 is a switch-type electric wear-resistant pipe clamp valve, and the electric flow regulating valve 32 is an adjustable-type electric wear-resistant pipe clamp valve.

[0035] An electric switch valve II 41 is provided on the water supply pipe 4.

[0036] An electric switch valve III 51 is provided on the discharge pipe 5. This electric switch valve III 51 is a switch-type electric wear-resistant pipe clamp valve.

[0037] The several baffles 62 are at least 4. The included angle β between the hypotenuse of the baffle 62 and the center line of the discharge pipe 5 is β = 0.5α.

[0038] A filling and discharging method using a full-pipe flow filling and discharging device is characterized by including the following steps:

[0039] (1) Before filling and discharging, first open the electric switch valve II 41 on the water supply pipe 4 to inject water into the box body 1;

[0040] (2) When the water level reaches the discharging liquid level 200, close the electric switch valve II 41, and then open the electric switch valve I 31 and the electric switch valve III 51 for discharging;

[0041] (3) Use the electric flow regulating valve 32 and the electromagnetic flowmeter 33 to adjust the flow rate of the feed pipe 3 so that the liquid level in the box body 1 is maintained between the lowest liquid level 100 and the highest liquid level 300, and make the filling slurry flow down in a siphon full-pipe manner;

[0042] (4) The filling slurry enters the box body 1 through the feed pipe 3, is screened by the grid screen 2 to remove large pieces or sundries, and then enters the discharge pipe 5 through the flow channels between the respective baffles 62 of the anti-rotation device 6 and the top plate 61 and the side wall of the inverted cone section at the bottom of the box body 1 and is supplied to the downstream vertical filling pipeline or filling borehole, avoiding the formation of vortices at the pipe orifice of the discharge pipe 5 and causing gas to mix in;

[0043] (5) When the filling and discharging is completed, first close the electric switch valve I 31 on the feed pipe 3, then open the electric switch valve II 41 on the water supply pipe 4 to inject water into the box body 1 to empty the remaining filling slurry in the vertical pipeline or filling borehole, and finally close the electric switch valve II 41 on the water supply pipe 4 and the electric switch valve III 51 on the discharge pipe 5 in sequence.

[0044] The present invention will be further described below in conjunction with specific examples:

[0045] Adopt as Figures 1-4The full-pipe flow filling and discharging device shown, the inner diameter of the vertical section of the box body 1 is 1000 mm, the top is open, and the cone angle α of the bottom inverted cone section is 120°; the grid screen 2 is circular with an outer diameter of 990 mm; the inner diameter of the feed pipe 3 is 150 mm; the inner diameter of the water supply pipe 4 is 125 mm; the inner diameter of the discharge pipe 5 is the same as the inner diameter of the feed pipe 3 and the inner diameter of the bottom outlet of the box body 1, which is 150 mm; the diameter of the top plate 61 of the anti-rotation device 6 is 350 mm, and 4 baffles 62 perpendicular to the top plate 61 and the side wall of the bottom inverted cone section of the box body 1 and similar to a right trapezoid are evenly distributed on the center line of the discharge pipe 5 under the top plate 61, and the included angle β between the hypotenuse of the baffle 62 and the center line of the discharge pipe 5 is 60°.

[0046] Practice shows that after adopting the full-pipe flow filling and discharging device and method of the present invention, it can not only realize the full-pipe flow discharging and conveying of the filling slurry, but also effectively prevent gas from mixing in the discharging process. The full-pipe flow filling and discharging device of the present invention has a simple structure, is easy to operate, has strong applicability, and has good promotion prospects.

Claims

1. A full-pipe flow filling and discharging device, characterized in that It includes a box body composed of a vertically open upper section and an inverted cone section at the bottom, a grid screen arranged at the joint of the vertical section and the bottom inverted cone section, a feed pipe arranged at the top of the box body, a water supply pipe arranged at the top of the box body, a discharge pipe arranged at the bottom of the box body and concentrically arranged with the box body at the front end, and a rotation stopper arranged at the top of the discharge pipe and concentrically arranged with the discharge pipe. The front end of the feed pipe is connected to the discharge port of the filling and mixing system, the front end of the water supply pipe is connected to the external water supply system, and the ends of the feed pipe and the water supply pipe both extend into the inner cavity of the box body from the top of the box body. The rotation stopper includes a top plate and several baffles arranged under the top plate and evenly distributed around the center line of the discharge pipe, perpendicular to the top plate and the side wall of the bottom inverted cone section. The inner diameter of the discharge pipe is the same as that of the feed pipe. A level gauge is arranged at the top of the box body, and the cone angle α of the inverted cone section at the bottom of the box body is 120° - 150°. An electric switch valve I, an electric flow regulating valve, and an electromagnetic flowmeter are arranged on the feed pipe. The electric switch valve I is a switch-type electric wear-resistant pipe clamp valve, and the electric flow regulating valve is an adjustable-type electric wear-resistant pipe clamp valve. An electric switch valve II is arranged on the water supply pipe. An electric switch valve III is arranged on the discharge pipe. This electric switch valve III is a switch-type electric wear-resistant pipe clamp valve.

2. The full-pipe flow filling and discharging device according to claim 1, wherein The several baffles are at least 4, and the included angle β between the hypotenuse of the baffle and the center line of the discharge pipe is 0.5α.

3. A filling and feeding method using the full-pipe flow filling and feeding device according to any one of claims 1-2, characterized in that It includes the following steps: (1) Before filling and feeding, first open the electric switch valve II on the water supply pipe to inject water into the box body. (2) When the water level reaches the feeding liquid level, close the electric switch valve II, and then open the electric switch valve I and the electric switch valve III for feeding. (3) Use the electric flow regulating valve and the electromagnetic flowmeter to adjust the flow rate of the feed pipe so that the liquid level in the box body is maintained between the lowest liquid level and the highest liquid level, and the filling slurry flows down in a siphon full pipe. (4) The filling slurry enters the box body through the feed pipe, large pieces are screened out by the grid screen, and then enters the discharge pipe through the flow channels between each baffle of the rotation stopper and the top plate and the side wall of the bottom inverted cone section of the box body and is fed to the downstream vertical filling pipeline or filling borehole, avoiding the formation of vortices at the outlet of the discharge pipe and causing gas to mix in. (5) When the filling and feeding is completed, first close the electric switch valve I on the feed pipe, then open the electric switch valve II on the water supply pipe to inject water into the box body to empty the remaining filling slurry in the vertical pipeline or filling borehole, and finally close the electric switch valve II on the water supply pipe and the electric switch valve III on the discharge pipe in sequence.

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