阅读说明：本技术 一种井工煤矿用高负压自动放水器 (High negative pressure automatic water drainage device for underground coal mine ) 是由 顾友波 于 2021-01-28 设计创作，主要内容包括：本发明公开了一种井工煤矿用高负压自动放水器,包括箱体、箱盖以及与箱体焊接的箱底,箱体与箱盖通过紧固螺丝固定,箱盖中间贯穿设置有圆筒阀芯,圆筒阀芯与箱盖通过阀芯螺帽固定,圆筒阀芯上端设置有半球面柱体,半球面柱体螺纹连接螺杆,螺杆螺纹连接不锈钢螺帽,不锈钢螺帽焊接浮球,箱体右侧底部焊接进水管,顶部焊接吸气管,进水管螺纹固定有进水管卧式止回阀,吸气管螺纹固定有吸气管卧式止回阀,箱体左侧底部焊接排水管,排水管螺纹固定有排水管卧式止回阀。通过采用以上技术方案,进气阀高度集成,浮球也通过进气阀螺杆连接在一起,做到了构造简单,故障率低,易于维护和使用寿命长,有效的降低了煤矿企业的瓦斯抽采成本。(The invention discloses a high-negative-pressure automatic water drainage device for a coal mine, which comprises a box body, a box cover and a box bottom welded with the box body, wherein the box body and the box cover are fixed through fastening screws, a cylindrical valve core penetrates through the middle of the box cover, the cylindrical valve core and the box cover are fixed through a valve core nut, a hemispherical cylinder is arranged at the upper end of the cylindrical valve core, the hemispherical cylinder is in threaded connection with a screw rod, the screw rod is in threaded connection with a stainless steel nut, the stainless steel nut is welded with a floating ball, a water inlet pipe is welded at the bottom of the right side of the box body, an air suction pipe is welded at the top of the box body, a water inlet pipe horizontal check valve is fixed on. Through adopting above technical scheme, the admission valve is highly integrated, and the floater also links together through the admission valve screw rod, has accomplished simple structure, and the fault rate is low, easy to maintain and long service life, the effectual gas drainage cost that has reduced the coal mine enterprise.)

1. The high-negative-pressure automatic water drainage device for the underground coal mine comprises a box body (1), a box cover (2) and a box bottom (3) welded with the box body (1), and is characterized in that the box body (1) and the box cover (2) are fixed through fastening screws (4), a cylindrical valve core (5) penetrates through the middle of the box cover (2), the cylindrical valve core (5) and the box cover (2) are fixed through a valve core nut (6), a hemispherical cylinder (7) is arranged at the upper end of the cylindrical valve core (5), a screw rod (8) is connected to the lower end of the hemispherical cylinder (7) through threads, a stainless steel nut (9) is connected to the screw rod (8) through threads, a stainless steel floating ball (10) is welded to the stainless steel nut (9), a water inlet pipe (11) is welded to the bottom of the right side of the box body (1), a gas suction pipe (12) is welded to the top of the box body, the air suction pipe (12) is fixedly provided with an air suction pipe horizontal check valve (14) through threads, the bottom of the left side of the box body (1) is welded with a drain pipe (15), and the drain pipe (15) is fixedly provided with a drain pipe horizontal check valve (16) through threads.

2. The high negative pressure automatic water discharger for the well-working coal mine according to claim 1, wherein one end of the air suction pipe (12) entering the box body (1) is provided with an air suction small hole (17).

3. The high negative pressure automatic water discharger for the underground coal mine according to claim 1, wherein the hemispherical cylinder (7) and the cylindrical valve core (5) are sealed by hard cambered surfaces through contact of the two.

4. The high negative pressure automatic water discharger for the underground coal mine according to claim 1, wherein a tank cover sealing ring (18) is arranged between the tank body (1) and the tank cover (2).

5. The high negative pressure automatic water discharger for the underground coal mine according to claim 1, wherein an air inlet valve sealing ring (19) is arranged at the joint of the tank cover (2) and the cylindrical valve core (5).

6. The high negative pressure automatic water discharger for the well-working coal mine according to claim 1, wherein check valve sealing rings (20) are arranged between the water inlet pipe (11) and the water inlet pipe horizontal check valve (13), between the water discharge pipe (15) and the water discharge pipe horizontal check valve (16), and between the air suction pipe (12) and the air suction pipe horizontal check valve (14).

7. The high negative pressure automatic water discharger for the underground coal mine according to claim 1, wherein a front air intake window (21) and a rear air intake window (22) are arranged in the cylindrical valve core (5).

8. The high negative pressure automatic water discharger for the well-working coal mine according to claim 1, wherein the water discharge pipe (15) is arranged in an upward inclined manner to form an included angle of 3-5 degrees with a horizontal plane, and the water inlet pipe (11) and the air suction pipe (12) are horizontally arranged.

Technical Field

The invention relates to the field of coal mine safety production, in particular to a high negative pressure automatic water drainage device for an underground coal mine.

Background

The gas is one of important factors which harm the safe production of a mine, the management of the mine gas disaster mainly depends on the extraction of a gas extraction system, the extraction negative pressure seriously restricts the gas extraction effect, and the accumulated water of a gas extraction pipeline is one of main factors which influence the gas extraction negative pressure, so that the prevention of the accumulated water of the gas extraction pipeline is particularly important.

The water drainer used by coal mine enterprises is divided into manual and automatic, and the manual water drainer has high labor cost and untimely water drainage. Most of automatic water drainage devices sold on the market at present have complex structures, high failure rate, difficult maintenance and short service life.

Disclosure of Invention

The invention aims to provide a high-negative-pressure automatic water discharger for a coal mine, which aims to solve the problems in the background technology.

In order to achieve the aim, the invention designs a high negative pressure automatic water discharger for a coal mine, which comprises a box body, a box cover and a box bottom welded with the box body, the box body and the box cover are fixed by fastening screws, a cylindrical valve core is arranged in the middle of the box cover in a penetrating way, the cylindrical valve core and the box cover are fixed through a valve core screw cap, a hemispherical cylinder is arranged at the upper end of the cylindrical valve core, the hemispherical cylinder is connected with a screw in a threaded manner, the screw is connected with a stainless steel nut in a threaded manner, the stainless steel nut is welded with a stainless steel floating ball, a water inlet pipe is welded at the bottom of the right side of the box body, an air suction pipe is welded at the top of the box body, a water inlet pipe horizontal check valve is fixed on the water inlet pipe through threads, the air suction pipe is fixedly provided with an air suction pipe horizontal check valve through threads, the bottom of the left side of the box body is welded with a drain pipe, and the drain pipe is fixedly provided with a drain pipe horizontal check valve through threads.

As a further scheme of the invention: and one end of the air suction pipe entering the box body is provided with an air suction small hole.

As a further scheme of the invention: the hemispherical cylinder and the cylindrical valve core are sealed hard through the contacted cambered surfaces of the hemispherical cylinder and the cylindrical valve core.

As a further scheme of the invention: and a box cover sealing ring is arranged between the box body and the box cover.

As a further scheme of the invention: and an air inlet valve sealing ring is arranged at the joint of the box cover and the cylindrical valve core.

As a further scheme of the invention: and check valve sealing rings are arranged between the water inlet pipe and the water inlet pipe horizontal check valve, between the drain pipe and the drain pipe horizontal check valve and between the air suction pipe and the air suction pipe horizontal check valve.

As a further scheme of the invention: and a front air inlet window and a rear air inlet window are arranged in the cylindrical valve core.

As a further scheme of the invention: the water discharge pipe is arranged in an upward inclined manner to form an included angle of 3-5 degrees with the horizontal plane, and the water inlet pipe and the air suction pipe are horizontally arranged.

The invention has the advantages that: through adopting above technical scheme, the admission valve height is integrated, and the floater also links together through the admission valve screw rod, has accomplished simple structure, and the fault rate is low, easy to maintain and long service life, the effectual gas drainage cost that has reduced coal mine enterprise, the horizontal check valve of installation on the breathing pipe can make during ponding in the breathing pipe flows into the box fast, prevents to lead to the ware that drains can not normal use because of breathing pipe ponding.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a cross-sectional view of a cylindrical cartridge.

Fig. 3 is a schematic diagram of a cylindrical valve core structure.

In the figure: 1-box body, 2-box cover, 3-box bottom, 4-fastening screw, 5-cylinder valve core, 6-valve core screw cap, 7-hemispherical cylinder, 8-screw, 9-stainless steel screw cap, 10-stainless steel floating ball, 11-water inlet pipe, 12-air suction pipe, 13-water inlet pipe horizontal check valve, 14-air suction pipe horizontal check valve, 15-water discharge pipe, 16-water discharge pipe horizontal check valve, 17-air suction small hole, 18-box cover seal ring, 19-air inlet valve seal ring, 20-check valve seal ring, 21-front air window and 22-rear air window.

Detailed Description

The drawings are for illustrative purposes only, and some components of the drawings may be omitted, enlarged or reduced in order to better explain the present embodiment, and do not represent the size of an actual product.

Referring to the attached figure 1, the high negative pressure automatic water drainage device for the underground coal mine comprises a box body 1, a box cover 2 and a box bottom 3 welded with the box body 1, wherein the box body 1 and the box cover 2 are fixed through a fastening screw 4, a box cover sealing ring 18 is arranged at the fastening screw 4, a cylindrical valve core 5 is arranged in the middle of the box cover 2 in a penetrating manner, an air inlet valve sealing ring 19 is arranged at the joint of the box cover 1 and the cylindrical valve core 5, the cylindrical valve core 5 and the box cover 1 are fixed through a valve core nut 6, a hemispherical cylinder 7 is arranged at the upper end of the cylindrical valve core 5, the cylindrical valve core 5 and the hemispherical cylinder 7 are hard sealed through a cambered surface contacted with the two, a screw 8 is in threaded connection with the lower end of the hemispherical cylinder 7, a stainless steel nut 9 is in threaded connection with the screw 8, a stainless steel floating ball 10 is in welded connection with the, the water inlet pipe 11 is connected with a low-lying part of a gas extraction pipeline, the water inlet pipe 11 is connected with a water inlet pipe horizontal check valve 13 through threads, a check valve sealing ring 20 is arranged between the water inlet pipe 11 and the water inlet pipe horizontal check valve 13, accumulated water in the gas extraction pipeline enters the box body 1 through the water inlet pipe horizontal check valve 13, the air suction pipe 12 is connected with an air suction pipe horizontal check valve 14 through threads, a part of the air suction pipe 12 entering the box body 1 is provided with an air suction small hole 17, the check valve sealing ring 20 is arranged between the air suction pipe 12 and the air suction pipe horizontal check valve 14, a drain pipe 15 is welded at the bottom of the left side of the box body 1.

Further, the maximum buoyancy generated by the stainless steel floating ball 10 is F1, the suction force of the pumping negative pressure on the semispherical cylinder 7 is F2, the total gravity of the stainless steel floating ball 10, the stainless steel nut 9, the screw 8 and the semispherical cylinder 7 is F3, and the size relationship is F1> F2+ F3.

Further, as shown in fig. 1, the water discharge pipe 15 is obliquely arranged upwards to form an included angle of 3-5 degrees with the horizontal plane, and the water inlet pipe 11 and the air suction pipe 12 are horizontally arranged.

Furthermore, the aperture of the small air suction hole 17 is smaller than the diameter of the screw 8, the aperture of the small air suction hole 17 is important, and if the aperture of the small air suction hole 17 is too large, the absolute atmospheric pressure in the tank body 1 cannot be obviously increased during air suction, so that water drainage failure is caused.

Further, as shown in fig. 2 and 3, a front louver 21 and a rear louver 22 are provided in the cylindrical valve body 5, and the sum of the sectional areas of the front louver 21 and the rear louver 22 is larger than the sectional area of the large hole of the cylindrical valve body 5.

The working principle is as follows: the accumulated water in the gas extraction pipeline flows into the box body through the horizontal check valve of the water inlet pipe, the water level in the box body gradually rises, the buoyancy force borne by the stainless steel floating ball gradually increases, when the buoyancy force of the stainless steel floating ball reaches a certain value, the hemispherical cylinder body is jacked open, the box body starts to admit air from the front air inlet window and the rear air inlet window, the absolute atmospheric pressure in the box body rises, the horizontal check valve of the water inlet pipe is closed, the horizontal check valve of the air suction pipe is closed, the horizontal check valve of the water discharge pipe is opened, water begins to be discharged, the water level in the box body gradually falls, the whole body of the stainless steel floating ball, the stainless steel screw cap, the screw rod and the hemispherical cylinder body gradually falls due to gravity, the cambered surface of the hemispherical cylinder body and the cambered surface of the valve core of the cylinder are closed, the air inlet is, the horizontal check valve of the water inlet pipe is loosened, and then the process is repeated.

In summary, the present invention is not limited to the above-described embodiments. Numerous changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The protection scope of the present invention shall be subject to the claims of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.