Mine air pipe filter automatic drainage device

Abstract

The present application relates to the technical fields of mine drainage, in particular to a kind of mine air pipe filtering automatic drainage device, including shell, air inlet, air outlet, filter core, steam-water separation piece, filter port, drainage port, float assembly and drainage assembly;Shell is divided into compressed air cavity and drainage cavity in;Float assembly includes float body, track bar connected with float body, and spiral track set in the inner wall of drainage cavity;When condensate water accumulates to limit water level in drainage cavity, float body will drive drainage assembly to open drainage port, and float body will rotate along spiral track by track bar, to increase the rotational flow effect of condensate water.The present application sets float assembly and drainage assembly, and when draining, the rotational flow effect of water discharge is increased by the rotation of float assembly, which separates impurities and water to some extent, increases the flow rate and impact force of water flow when draining, and reduces the occurrence of drainage port blockage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underground mine drainage, in particular to a mine air pipe filtering automatic drainage device. BACKGROUND

[0002] The mine air pipe filtering automatic drainage device is a key auxiliary equipment widely used in the mine underground compressed air system, which is mainly used for purifying the compressed air in the conveying process and discharging the water in the compressed air through condensation filtration. The compressed air delivered by the compressed air system may carry leaked oil stains, iron rust, dust and other solid impurities generated on the inner wall of the pipeline. The mine air pipe filtering automatic drainage device filters, separates and automatically discharges these pollutants, thereby ensuring the normal operation of subsequent pneumatic tools and equipment such as pneumatic picks, pneumatic drills and pneumatic pumps, preventing the damage of the equipment due to water hammer, rust or oil blockage, and maintaining the safety and production efficiency of the mine operation.

[0003] However, in the actual use process of the existing mine air pipe filtering automatic drainage device, the oil sludge, coal dust, iron rust and other impurity particles in the compressed air are more and the composition is complex due to the harsh mine environment, which is prone to accumulate at the valve port of the automatic drainage valve, causing the drainage valve to be blocked. At the same time, the oil-water mixture has certain viscosity and is easy to adhere around the valve port, causing poor drainage. In addition, it is very difficult to clean and maintain the blocked drainage device in the underground environment, which needs to be stopped and depressurized, and the operation is complicated and time-consuming, which seriously affects the production continuity. In the rainy season or high humidity weather conditions, the water content of the air sucked by the air compressor on the well increases dramatically, causing the water in the pipeline to accumulate faster and carry more impurities. The accumulated water dissolved in the air in the rainy season is often acidic and has stronger corrosion on the equipment. Therefore, the drainage device needs to discharge the accumulated water more quickly and efficiently.

[0004] Therefore, the present application provides a mine air pipe filtering automatic drainage device. SUMMARY

[0005] The present application aims to provide a mine air pipe filtering automatic drainage device to solve the problem of impurity accumulation and blockage of the drainage port, especially the problem of more easily blocked drainage port in the rainy season and the need for more rapid discharge of the corrosive accumulated water. By setting the float assembly and the drainage assembly, the rotation of the float assembly increases the cyclone effect of the accumulated water during discharge, separates the impurities from the accumulated water to some extent, and increases the flow rate and impact force of the water flow during discharge, thereby reducing the occurrence of drainage port blockage.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides a kind of mine air pipe filter automatic drainage device, including shell, air inlet, air outlet, filter core, steam-water separation piece, filter port, drainage port, float assembly and drainage assembly;The shell is divided into compressed air cavity and drainage cavity, and the compressed air cavity and drainage cavity are communicated by filter port;Water vapor will flow into drainage cavity by filter port after filter core and steam-water separation piece by compressed air along air inlet after compressed air cavity;The float assembly includes float body, track bar connected with the float body, and spiral track arranged on the inner wall of the drainage cavity;The float body is connected with the drainage assembly, one end of the track bar is connected in the spiral track;When the condensate water in the drainage cavity accumulates to limit water level, the float body will drive drainage assembly to open drainage port, and the float body will rotate along spiral track by track bar, to increase the rotational flow effect of condensate water.

[0008] It can be known that, in the process of automatic drainage, especially in rainy season or high humidity weather conditions, the drainage port is prone to be blocked due to many impurities carried in compressed air, and the accumulated water is acidic in rainy season, so it is necessary to drain the water more efficiently. When the float assembly drains water, it drives the drainage assembly to open the drainage port. When the float assembly drains water, it rotates to drive the accumulated water, increasing the rotational flow effect and flow rate of the accumulated water when it is drained. The rotational flow separates some impurities, and reduces the accumulation of impurities when the drainage speed of the accumulated water increases, thereby reducing the blockage of the drainage valve.

[0009] Preferably, two groups of track bars are symmetrically connected to the float body, and the track bars are connected to the spiral track by sliding.

[0010] In the above scheme, when the float body descends during drainage, it rotates along the spiral track by the two groups of connected track bars, thereby driving the accumulated water to generate a rotational flow effect.

[0011] Preferably, the float assembly further includes rotational flow grooves that are uniformly distributed in a ring shape on the float body. The rotational flow grooves are arc-shaped and have the same direction of rotation as the float body during drainage.

[0012] In the above scheme, the rotational flow grooves on the float body further increase the rotational flow effect of the accumulated water when it is drained during the rotation of the float body, thereby further increasing the separation effect of impurities and the flow rate of the accumulated water when it is drained.

[0013] Preferably, the drainage assembly includes a plug, a support, two pull rods, a rotating shaft, and a sliding groove. The pull rods are connected to the plug by the rotating shaft, and the rotating shaft is arranged in the sliding groove. The float assembly further includes a ring-shaped bracket fixedly connected to the float body, and the end of the pull rod is slidably connected to the ring-shaped bracket.

[0014] In the above scheme, when the float body increases in water volume, it will rise by buoyancy, at this time the float body will drive the pull rod to move up through the annular support, in the process of gradually moving up, the pull rod will gradually increase the other end as the fulcrum through the rotating shaft, unable to drive the plug to move up to open the drain, until the float body moves to the limit water level, the pull rod and the annular support end cannot continue to rotate, at this time the pull rod will drive the rotating shaft and the plug to move upward along the sliding groove direction, at this time the plug will open the drain, so that the water flow quickly flows into the drain.

[0015] Preferably, the drain includes a drain upper pipe, a drain inner pipe and a drain lower pipe; the drain inner pipe is rotatably connected with the drain upper pipe, the drain upper pipe is rotatably connected with the shell, the bottom of the drain inner pipe is fixedly connected with the drain lower pipe, and the drain lower pipe is fixedly connected with the bottom of the shell.

[0016] Preferably, a plurality of groups of flow grooves are arranged in the form of a ring and uniformly distributed above the drain upper pipe, and a plurality of groups of extrusion blocks corresponding to the flow grooves are arranged at the bottom of the plug.

[0017] In the above scheme, the flow grooves arranged on the drain upper pipe further increase the rotational flow effect during drainage, and the extrusion blocks at the bottom of the plug fall back to the top of the drain upper pipe after drainage, at this time the extrusion blocks will move along the flow grooves in the process of falling, extruding the impurities accumulated on the flow grooves into the drain to prevent the drain from being blocked by the accumulation of impurities.

[0018] Preferably, a plurality of groups of movable grooves are arranged in the form of a ring and uniformly distributed on the drain inner pipe, a plurality of groups of movable blocks corresponding to the movable grooves are arranged on the drain upper pipe, the width of the movable groove is greater than that of the movable block, and a torsional spring is arranged between the drain upper pipe and the drain inner pipe.

[0019] In the above scheme, during drainage, the water flow flows through the flow grooves, at this time, since the drain upper pipe and the drain inner pipe are rotatably connected, the water flow self-excited oscillation causes the drain upper pipe to produce periodic pressure fluctuations when the high-speed water flow passes through, so that the drain upper pipe produces high-frequency vibration, which can effectively prevent fine particles from adhering to the drain upper pipe, and further reduce the occurrence of blockage at the drain.

[0020] Preferably, the float assembly further includes a push spring connected to the top of the drain cavity.

[0021] In the above scheme, by arranging the push spring, the float body is pressed downward during drainage, so as to accelerate the rotation rate of the float body, and the accumulated water is extruded by the float body, so as to further improve the flow rate and rotational flow effect of the accumulated water during drainage.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1、The mine air pipe filtering automatic drainage device of the present application is provided with a float assembly and a drainage assembly, the float body is connected with the track rod, when the float body is lowered during drainage, the float body rotates along the spiral track through the track rod, thereby driving the accumulated water to generate a cyclone effect, which accelerates the drainage speed of the accumulated water, and produces a centrifugal separation effect on the oil sludge, coal powder, rust and other impurities in the water flow during the cyclone process, thereby reducing the accumulation of impurities at the drainage port, and effectively reducing the risk of drainage valve blockage.

[0024] 2、The present application is provided with a drainage upper pipe and a drainage inner pipe, and utilizes the fluid self-excited oscillation generated when the water flow passes through the flow groove to make the drainage upper pipe generate periodic high-frequency vibration during the drainage process. This vibration effectively prevents fine particles from adhering to the wall surface of the drainage port, especially in the case where fine coal powder or rust particles entrained in compressed air in the mine environment are prone to adhere, the vibration effect can significantly reduce the deposition of impurities, thereby further reducing the possibility of drainage port blockage and improving the drainage efficiency and long-term operation stability of the device.

[0025] 3、The flow groove of the drainage upper pipe and the extrusion block at the bottom of the plug are provided, the flow groove further enhances the cyclone effect during drainage, and when the extrusion block falls back with the plug after the end of drainage, it moves along the flow groove, extruding the impurities that may accumulate at the top of the drainage upper pipe into the drainage port, ensuring the smoothness of the drainage channel, and at the same time, the movable groove promotes the periodic vibration between the drainage upper pipe and the drainage inner pipe. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole structure schematic view of the mine air pipe filtering automatic drainage device;

[0027] Figure 2 It is a whole structure sectional view of the mine air pipe filtering automatic drainage device;

[0028] Figure 3 It is a sectional view of the float assembly structure of the mine air pipe filtering automatic drainage device;

[0029] Figure 4 It is a structure schematic view of the drainage assembly of the mine air pipe filtering automatic drainage device;

[0030] Figure 5 It is an explosion view of the drainage assembly structure of the mine air pipe filtering automatic drainage device;

[0031] Figure 6 It is an explosion view of the drainage port structure of the mine air pipe filtering automatic drainage device;

[0032] Figure 7The figure is a schematic diagram of the open state of the drainage port of the mine air pipe filtering automatic drainage device.

[0033] In the figure: 1, housing; 2, air inlet; 3, air outlet; 4, filter element; 5, steam-water separation piece; 6, filter port; 7, drainage port; 8, float assembly; 9, drainage assembly; 11, compressed air cavity; 12, drainage cavity; 71, upper drainage pipe; 72, inner drainage pipe; 73, lower drainage pipe; 74, flow groove; 75, movable groove; 76, movable block; 77, torsional spring; 81, float body; 82, track rod; 83, spiral track; 84, cyclone groove; 85, annular support; 86, push spring; 91, plug; 92, support; 93, pull rod; 94, rotating shaft; 95, sliding groove; 96, extrusion block. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0035] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can obtain other implementations without departing from the concept of the present application and without paying creative labor, therefore the present application is not limited by the specific embodiments disclosed below.

[0036] Please refer to Figures 1 to 7 , the present application provides the following technical solutions:

[0037] A mine air pipe filtering automatic drainage device, comprising a housing 1, an air inlet 2, an air outlet 3, a filter element 4, a steam-water separation piece 5, a filter port 6, a drainage port 7, a float assembly 8, a drainage assembly 9, and a compressed air cavity 11 and a drainage cavity 12 inside the housing 1 separated by the filter port 6; wherein the float assembly 8 comprises a float body 81, a track rod 82, a spiral track 83, a cyclone groove 84, an annular support 85 and a push spring 86, the drainage assembly 9 comprises a plug 91, a support 92, a pull rod 93, a rotating shaft 94, a sliding groove 95, the drainage port 7 comprises an upper drainage pipe 71, an inner drainage pipe 72, a lower drainage pipe 73, a flow groove 74, a movable groove 75, a movable block 76 and a torsional spring 77.

[0038] As an embodiment of the present application, refer to Figure 1 , Figure 2The inner cavity of the shell 1 is separated into a compressed air cavity 11 and a drainage cavity 12 by the filter core 4 and the steam-water separation piece 5; the compressed air containing impurities enters the compressed air cavity 11 through the air inlet 2, and after being filtered by the filter core 4 and the steam-water separation piece 5, the condensed water carrying oil sludge, coal powder, rust and other impurities flows into the drainage cavity 12 through the filtering port 6 after filtering a small amount of impurities; the drainage cavity 12 is provided with a float assembly 8 and a drainage assembly 9, when the condensed water accumulates to the limit water level, the float body 81 rotates downward along the spiral track 83 through the track rod 82, synchronously driving the drainage assembly 9 to open the drainage port 7, realizing automatic drainage.

[0039] As an embodiment of the present application, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 The float body 81 is symmetrically connected with two groups of track rods 82, and the end of the track rod 82 is slidably connected with the spiral track 83; an annular and uniformly distributed arc-shaped rotational flow groove 84 is arranged on the outer periphery of the float body 81, and the rotation direction of the rotational flow groove 84 is consistent with the descending rotation direction of the float body 81; when draining, the float body 81 rotates, the rotational flow groove 84 further enlarges the rotational flow effect of the accumulated water, improves the centrifugal separation efficiency of the impurities, increases the flow rate, and reduces the accumulation of impurities at the drainage port 7.

[0040] It should be noted that the rotational flow groove 84 is arranged along the descending direction of the float body 81.

[0041] As an embodiment of the present application, refer to Figure 2 、 Figure 4 、 Figure 5 The plug 91 of the drainage assembly 9 is located at the top of the drainage upper pipe 71, the support 92 is fixed to the bottom of the drainage cavity 12, one end of the two groups of pull rods 93 is rotatably connected with the plug 91 through the rotating shaft 94, and the other end is slidably connected with the annular support 85 fixed to the float body 81; the sliding groove 95 is longitudinally arranged along the support 92, and the rotating shaft 94 is arranged in the sliding groove 95; when the accumulated water increases, the float body 81 floats up and drives the pull rod 93 to rotate around the rotating shaft 94, and finally the pull rod 93 pulls the plug 91 to move upward, and the drainage port 7 is opened; after the drainage is completed, the float body 81 descends, and the plug 91 resets to close the drainage port 7.

[0042] As an embodiment of the present application, refer to Figure 2 、 Figure 4 、 Figure 6The drain outlet 7 is composed of a drain upper pipe 71, a drain inner pipe 72 and a drain lower pipe 73; the top of the drain upper pipe 71 is provided with annularly distributed flow grooves 74, the bottom of the plug 91 is provided with extrusion blocks 96 corresponding to the flow grooves 74; the side wall of the drain inner pipe 72 is provided with movable grooves 75, the inner wall of the drain upper pipe 71 is provided with movable blocks 76 and is placed in the movable grooves 75, and the torsional spring 77 is arranged between the drain upper pipe 71 and the drain inner pipe 72; during the drainage process, the high-speed water flow generates self-excited oscillation through the flow grooves 74, drives the drain upper pipe 71 to vibrate at a high frequency relative to the drain inner pipe 72, and prevents fine particles from adhering; when the plug 91 falls back at the end of the drainage, the extrusion blocks 96 slide along the flow grooves 74, and the accumulated impurities are pushed into the drain outlet 7, further preventing blockage.

[0043] As an embodiment of the present application, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 The top of the drain cavity 12 and the float body 81 are provided with a pushing spring 86; when the drainage is started, the pushing spring 86 applies a downward pushing force to the float body 81, accelerates the rotation and downward movement of the float body 81, improves the initial velocity of the drainage, and enhances the rotational flow and scouring effect.

[0044] Working principle: the impurity-containing compressed air enters the compressed air cavity 11 through the air inlet 2, is filtered through the filter element 4 and the steam-water separation piece 5, and the condensed water flows into the drain cavity 12 through the filter opening 6; when the condensed water accumulates to a set water level, the float body 81 rises in the process of the accumulation of the condensed water until the pull rod 93 drives the plug 91 to open, and the accumulated water is discharged through the drain outlet 7; when the float body 81 descends, it rotates along the spiral track 83 through the track rod 82, and the rotational flow groove 84 and the flow groove 74 together enhance the rotational flow, so that the accumulated water is in a high-speed rotational flow state when it is discharged, the impurities are centrifugally separated during the process of accelerating the discharge of the accumulated water, and the deposition of the impurities is reduced by the high-speed water flow; when the water flows along the flow groove 74, the drain upper pipe 71 is subjected to the impact force of the water flow to generate high-frequency vibration under the self-excited oscillation, thereby reducing the deposition of fine coal powder or rust particles; and after the drainage is completed, the plug 91 resets, at which time the extrusion blocks 96 extrude downward along the flow groove 74, thereby cleaning the impurities on the flow groove 74 and reducing the blockage phenomenon caused by the accumulation of the impurities; after the drainage is completed, the plug 91 resets, and the device enters the next cycle.

[0045] Specifically, after the compressed air system is running normally, compressed air containing moisture and impurities enters the compressed air chamber 11 through the air inlet 2. Solid impurities are filtered by the filter element 4, and water vapor is condensed into liquid water by the steam-water separator 5. The liquid water carries a small amount of impurities and flows into the drain chamber 12 through the filter port 6. As the water level rises, the float body 81 floats up and drives the pull rod 93 to rotate around the rotating shaft 94. At first, the pull rod 93 continues to rotate around the rotating shaft 94 as the fulcrum and does not drive the plug 91 to move up until the pull rod 93 can no longer rotate. At this time, the float body 81 continues to float up. Finally, when the pull rod 93 can no longer rotate, it will pull the plug 91 to move up, so that the drain port 7 opens.

[0046] Subsequently, as the accumulated water is discharged, the spring 86 and the buoyancy cause the float body 81 to move rapidly downward. During the downward movement of the float body 81, it is driven by the track rod 82 connected to it. The track rod 82 moves along the spiral track 83, and at the same time, the float body 81 will rotate. At this time, the float body 81 drives the water flow to generate swirling flow through the swirling channel 84 and its own rotation, and increases the water discharge speed through the swirling flow. When the water is discharged in a swirling state, it will cause centrifugal separation of impurities due to its own influence, so that the water can flow more smoothly into the drain outlet 7.

[0047] Meanwhile, as the water flows through the flow channel 74 on the upper drainage pipe 71, the swirling effect of the water flow is further increased. At this time, the flow channel 74 is also subjected to the impact force of the water flow, which causes the upper drainage pipe 71 to move within the movable channel 75 of the inner drainage pipe 72 via the movable block 76. At this time, the upper drainage pipe 71 and the inner drainage pipe 72 will rotate relative to each other, and stretch the torsion spring 77 connecting the upper drainage pipe 71 and the inner drainage pipe 72. Under the stretching, the elastic force of the torsion spring 77 increases to overcome the impact force of the water flow, and causes the upper drainage pipe 71 to rotate relative to each other in the opposite direction. Under the continuous impact of the water flow, continuous high-frequency vibration is generated, thereby reducing the deposition and adhesion of fine coal powder or rust particles, and further reducing the deposition of impurities.

[0048] After drainage is completed, the water level drops, the float body 81 resets, and the plug 91 re-closes the drain outlet 7 under the action of gravity and the push spring 86, completing one automatic drainage process; at this time, the squeezing block 96 at the bottom of the plug 91 will simultaneously squeeze downward along the flow channel 74, scraping the surface of the flow channel 74, thereby preventing impurities from accumulating on the flow channel 74 and preventing the drain outlet 7 from becoming blocked.

[0049] The above embodiments are only used to illustrate some examples of the implementable technical solutions of the present invention and are not intended to limit the implementation. The present invention can be understood in more detail by referring to the embodiments. Those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the scope of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic drainage device for mine ventilation duct filtration, characterized in that: It includes a housing (1), an air inlet (2), an air outlet (3), a filter element (4), a steam-water separator (5), a filter port (6), a drain port (7), a float assembly (8), and a drain assembly (9); the housing (1) is divided into a compressed air chamber (11) and a drain chamber (12), which are connected by the filter port (6); the compressed air flows through the compressed air chamber (11) along the air inlet (2), and the water vapor flows through the filter element (4) and the steam-water separator (5) and then through the filter port (6) into the drain chamber (12); the float assembly (8) includes the float itself The float body (81), the track rod (82) connected to the float body (81), and the spiral track (83) set on the inner wall of the drainage chamber (12); the float body (81) is connected to the drainage assembly (9), and one end of the track rod (82) is connected to the spiral track (83); when the condensate in the drainage chamber (12) accumulates to the limit water level, the float body (81) will drive the drainage assembly (9) to open the drain outlet (7), and the float body (81) will rotate along the spiral track (83) through the track rod (82) to increase the condensate swirling effect; Two sets of track rods (82) are symmetrically connected to the float body (81), and the ends of the track rods (82) are slidably connected to the spiral track (83); The float assembly (8) further includes a swirling groove (84) evenly distributed in a ring on the float body (81). The swirling groove (84) is arc-shaped and rotates in the same direction as the float body (81) when draining water. The drainage assembly (9) includes a plug (91), a support (92), a pull rod (93), a rotating shaft (94), and a sliding groove (95); the pull rod (93) is provided in two sets and is rotatably connected to the plug (91) through the rotating shaft (94), and the rotating shaft (94) is disposed in the sliding groove (95); the float assembly (8) also includes an annular bracket (85) fixedly connected to the float body (81), and the end of the pull rod (93) is slidably connected to the annular bracket (85); The drain outlet (7) includes an upper drain pipe (71), an inner drain pipe (72), and a lower drain pipe (73); the inner drain pipe (72) is rotatably connected to the upper drain pipe (71), the upper drain pipe (71) is rotatably connected to the housing (1), the bottom of the inner drain pipe (72) is fixedly connected to the lower drain pipe (73), and the lower drain pipe (73) is fixedly connected to the bottom of the housing (1).

2. The automatic drainage device for mine ventilation duct filtration according to claim 1, characterized in that: The drain pipe (71) is provided with several sets of flow channels (74) evenly distributed in a ring above it, and the bottom of the plug (91) is provided with several sets of extrusion blocks (96) corresponding to the flow channels (74).

3. The automatic drainage device for mine ventilation duct filtration according to claim 2, characterized in that: The inner drain pipe (72) is provided with several sets of movable grooves (75) evenly distributed in a ring, and the upper drain pipe (71) is provided with several sets of movable blocks (76) corresponding to the movable grooves (75). The width of the movable grooves (75) is greater than that of the movable blocks (76), and a torsion spring (77) is provided between the upper drain pipe (71) and the inner drain pipe (72).

4. The automatic drainage device for mine ventilation duct filtration according to claim 1, characterized in that: The float assembly (8) also includes a push spring (86) with one end connected to the top of the drain cavity (12).

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