A special automatic slag and water discharging device for negative pressure drainage pipelines and its usage method

Abstract

The present invention provides a special automatic slag and water discharging device for a negative pressure drainage pipeline, which comprises a box body. On one side of the box body is a slag storage chamber, and on the other side is a water storage chamber. The slag storage chamber is located at the upper left position of the water storage chamber, and the upper spaces of the slag storage chamber and the water storage chamber are connected. A switchable slag discharge cover is provided at the lower end of the slag storage chamber. Inside the upper part of the box body, there are a horizontal partition board and a vertical partition board. One end of the horizontal partition board is fixed on the left inner wall of the slag storage chamber, and the other end is fixed to the top end of the vertical partition board. There is a gap between the upper end of the horizontal partition board and the top plate of the box body, and the vertical partition board is placed inside the water storage chamber. The present invention also provides a method for using the special automatic slag and water discharging device for a negative pressure drainage pipeline. The special automatic slag and water discharging device for a negative pressure drainage pipeline of the present invention can automatically collect the water flow and the coal / rock fragments carried by the water flow in the drainage pipeline under a negative pressure environment and discharge them into the roadway.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic slag-discharging equipment for underground coal mine gas drainage, and relates to a special automatic slag-discharging and water-discharging device for negative-pressure gas drainage pipelines and a using method thereof. Background Art

[0002] When the underground gas drainage boreholes communicate with the water-bearing area through rock fractures, the water in the coal (rock) layer will enter the gas drainage pipeline through the gas drainage boreholes and accumulate in the low-lying areas of the gas drainage pipeline. When the accumulated water flow is large, it will block the gas drainage system, seriously affecting the overall gas drainage efficiency of the mine. The existing automatic water-discharging devices mainly have the following problems: the drainage is discontinuous. Whenever the automatic water-discharging device drains water, the water inlet of the automatic water-discharging device will also stop working, resulting in the water flow in the gas drainage pipeline being unable to enter the automatic water-discharging device during the drainage period of the automatic water-discharging device; the coal / rock debris carried in the water flow enters the automatic water-discharging device and cannot be completely discharged with the water flow. Some coal / rock debris will remain in the automatic water-discharging device, affecting the normal operation of the automatic water-discharging device and even damaging the automatic water-discharging device. Summary of the Invention

[0003] In order to solve the above technical problems, the invention provides a special automatic slag-discharging and water-discharging device for negative-pressure gas drainage pipelines and a using method thereof.

[0004] To achieve the above object, the present invention adopts the following technical solution: A special automatic slag and water discharging device for a negative pressure drainage pipeline, comprising a box body. On one side of the box body is a slag storage chamber, and on the other side is a water storage chamber. The slag storage chamber is located at the upper left position of the water storage chamber, and the upper spaces of the slag storage chamber and the water storage chamber are connected. A switchable slag discharge cover is provided at the lower end of the slag storage chamber. Inside the upper part of the box body, there are a horizontal partition board and a vertical partition board. One end of the horizontal partition board is fixed on the left inner wall of the slag storage chamber, and the other end is fixed to the top end of the vertical partition board. There is a gap between the upper end of the horizontal partition board and the top plate of the box body. The vertical partition board is placed inside the water storage chamber. On the left side wall of the water storage chamber, there is also an inclined downward guide plate. An opening is provided between the bottom end of the vertical partition board and the guide plate, and a switchable internal drainage cover is installed at the bottom end of the vertical partition board. A transition water storage chamber is formed among the vertical partition board, the guide plate, the internal drainage cover and the box body. The right side of the slag storage chamber is connected to the transition water storage chamber, and a filter screen is provided at the connection between the two. A drain pipe is provided on the bottom plate of the box body. Below the bottom plate, there are a connecting plate and a mounting plate. An opening is provided between the bottom ends of the connecting plate and the mounting plate, corresponding to the water outlet at the bottom of the drain pipe. An external drainage cover is switchably installed at the bottom of the mounting plate to realize the opening and closing of the drain pipe. A motion state conversion device is also installed in the water storage chamber. Above the horizontal partition board, there are a connecting pipe and a switch control device. The top end of the connecting pipe sequentially passes through the switch control device and the top plate of the box body and is connected to the negative pressure drainage pipeline. An opening is provided on the horizontal partition board, and the bottom end of the connecting pipe is fixed at the opening. And a break is formed by horizontally cutting and disconnecting the connecting pipe inside the switch control device. The motion state conversion device controls the action of the switch control device to control the opening and closing of the break of the connecting pipe.

[0005] Further, the motion state conversion device includes a water float, a connecting rod, a cylindrical cam mechanism and a rotating cam. The cylindrical cam mechanism includes a housing, a cylindrical cam, a connecting frame and a slider. The connecting frame and the cylindrical cam are placed inside the housing. The connecting frame is a "U"-shaped frame body. Sliders are respectively provided inside the tops of the two vertical frame bodies of the connecting frame. The sliders slide on the grooves on the outer wall of the cylindrical cam. The bottom end of the connecting rod is fixed above the water float, and the top end of the connecting rod passes upward through the housing and is connected to the bottom end of the connecting frame. The top end of the cylindrical cam passes out above the housing and is connected to the rotating cam. The water float drives the connecting rod and the connecting frame to move up and down, so that the sliders slide on the grooves on the outer wall of the cylindrical cam, thereby causing the cylindrical cam to rotate in the circumferential direction, and then driving the rotating cam to rotate in the circumferential direction. There is a first convex tooth protruding outward on the rotating cam.

[0006] Further, the switch control device includes a housing, a gear, teeth, a second convex tooth, a pressing rod, a first spring, a support, a hydraulic cylinder, a piston rod, and a second spring. The bottom surface of the housing is fixed on the horizontal partition, and the left end surface of the housing is fixed on the left inner wall of the slag storage chamber. The gear is installed at one end of the housing through a rotating shaft. A plurality of teeth and a second convex tooth are arranged in the circumferential direction on the gear. The length of the second convex tooth is longer than that of the teeth. The hydraulic cylinder is fixed inside the housing through a support, and the hydraulic cylinder is in an L shape. Hydraulic oil is filled in the hydraulic cylinder. A pressing rod is arranged at the top end of the vertical section of the hydraulic cylinder. The bottom end of the pressing rod is connected to the bottom end of the horizontal section of the hydraulic cylinder through a first spring. A piston rod is arranged in the horizontal section of the hydraulic cylinder. The cross section of the piston rod is rectangular. A first through hole is arranged at the front end of the piston rod, and the front end of the piston rod is connected to one end of a second spring. The other end of the second spring passes through the housing and is connected to the left inner wall of the slag storage chamber. Second through holes and third through holes for the connecting pipe to pass through are respectively arranged on the upper surface and the lower surface of the housing. When the second convex tooth rotates to the position of the pressing rod, it applies pressure to the pressing rod, and the pressing rod moves downward. The hydraulic oil in the hydraulic cylinder is stressed to make the piston rod move forward. At this time, the first through hole on the piston rod moves forward, and the piston rod seals the break of the connecting pipe. When the second convex tooth leaves the position of the pressing rod, the pressing rod bounces under the elastic force of the first spring, and the piston rod contracts to the original position inside the hydraulic cylinder. The first through hole on the piston rod moves backward, corresponding to the position of the break of the connecting pipe, so that the inside of the connecting pipe is unblocked.

[0007] Further, the bottom end of the flow guide plate is connected to the internal drain cover through a connecting rope.

[0008] Further, a first magnetic material layer is arranged on the outer surface of the bottom of the internal drain cover, and a second magnetic material layer is arranged on the outer surface of the connecting rod.

[0009] Further, a guide rod is also arranged in the water storage chamber. The bottom end of the guide rod is fixed to the bottom plate of the box body, and the top end of the guide rod penetrates through the water float and is slidably connected to the connecting rod.

[0010] Further, the water float is made of a flame-retardant plastic or a flame-retardant rubber material.

[0011] The present invention also provides a method for using a special automatic slag and water discharging device for a negative pressure drainage pipeline, and the specific implementation steps are as follows:

[0012] 1) Water storage: The accumulated water and coal / rock debris in the negative pressure drainage pipeline enter the slag storage chamber through the connecting pipe. Under the action of the drainage negative pressure, the slag discharge cover is in a closed state. The water flow and coal / rock debris gather in the slag storage chamber under the action of their own gravity. The accumulated water flow enters the transition water storage chamber through the filter screen. The filter screen can effectively filter coal / rock debris and prevent it from entering the transition water storage chamber;

[0013] At this time, the internal drainage cover and the connecting rod remain in an open state under the action of magnetic force, and the water flowing into the transition water storage chamber enters the water storage chamber when the internal drainage cover is in the open state; at the same time, under the action of the extraction negative pressure, the external drainage cover is in a closed state, so the water flowing into the large-volume water storage chamber will gradually accumulate in the large-volume water storage chamber; as the water flow in the water storage chamber accumulates more and more, under the action of buoyancy, the motion state conversion device pushes the internal drainage cover, and the internal drainage cover will gradually enter a closed state. At this time, the automatic slag discharger dedicated to the negative pressure extraction pipeline is in a water storage state;

[0014] 2) Drainage: When the internal drainage cover is closed, the automatic slag discharger for the negative pressure extraction pipeline will enter the drainage state. During drainage, since the internal drainage cover is closed, water will accumulate in the transition water storage chamber. Due to the gravity of the water flow, the external drainage cover is opened, and the water in the water storage chamber is discharged into the roadway through the drainage pipe under the action of gravity.

[0015] During the drainage process, the internal drainage cover returns to its initial open state, and the automatic slag and water discharger dedicated to the negative pressure extraction pipeline enters the water storage state again;

[0016] 3) Slag discharge: When the automatic slag discharge and water discharge device for negative pressure extraction pipelines is in the process of repeatedly storing and draining water, when the motion state conversion device controls the switch control device to operate and control the connection pipe fracture to be blocked, the connection pipe is disconnected from the negative pressure extraction pipeline, and the automatic slag discharge and water discharge device for negative pressure extraction pipelines will enter the slag discharge state;

[0017] At this time, under the action of gravity, the slag discharge cover will open, and the coal / rock slag and accumulated water stored in the slag storage chamber will be discharged into the tunnel; at the same time, due to the disappearance of the extraction negative pressure, the water flow in the transition water storage chamber enters the water storage chamber under the action of gravity, and the water flow in the water storage chamber is discharged from the drainage pipe into the tunnel under the action of gravity. During the drainage process, the motion state conversion device will continue to work, and the motion state conversion device will control the action of the switch control device to control the opening of the connecting pipe fracture, and the inside of the connecting pipe will be connected, and the extraction negative pressure will act on the automatic slag discharger again; at this time, the slag discharge cover and the external drainage cover are in a closed state under the action of the extraction negative pressure, and the automatic slag discharger dedicated to the entire negative pressure extraction pipeline enters the water storage state again.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The automatic slag and water discharger specially designed for negative pressure extraction pipelines of the present invention can automatically collect the water flow in the extraction pipeline and the coal / rock debris carried in the water flow under negative pressure environment, and discharge them into the tunnel.

[0020] The special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention is provided with a filter screen between the slag storage chamber and the transition water storage chamber, which can effectively filter the coal / rock fragments carried in the water flow, and effectively prevent the adverse effects of coal / rock fragments on the automatic water discharging device.

[0021] The special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention, by setting a transition water storage chamber and a water storage chamber, this structure can effectively ensure the continuous operation of the automatic water discharging device, and still enable the water flow in the drainage pipeline to continuously enter the transition water storage chamber of the automatic slag and water discharging device during the drainage period. And by setting a motion state conversion device and a switch control device, the buoyancy can be effectively converted into thrust to control the action of the negative pressure drainage on the automatic slag and water discharging device, and realize the conversion of the water storage, drainage and slag discharging states. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention, and also a schematic diagram of the water storage state;

[0023] Figure 2 It is a schematic diagram of the drainage state of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0024] Figure 3 It is a schematic diagram of the slag discharging state of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the motion state conversion device of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the switch control device of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0027] Figure 6 It is a top view of the switch control device of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the contact between the rotating cam and the gear of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0029] Figure 8 It is a schematic diagram of the first magnetic material layer on the internal drainage cover of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0030] Figure 9 It is a schematic diagram of the second magnetic material layer on the connecting rod of the special automatic slag and water discharging device for the negative pressure drainage pipeline of the present invention;

[0031] In the figure: 1. Box body, 11. Slag storage chamber, 12. Water storage chamber, 13. Slag discharge cover, 14. Horizontal partition board, 15. Vertical partition board, 16. Flow guide plate, 17. Internal drain cover, 171. First magnetic material layer, 18. Transition water storage chamber, 2. Filter screen, 3. Drain pipe, 4. Connecting plate, 5. Mounting plate, 6. External drain cover, 7. Motion state conversion device, 71. Water ski, 72. Connecting rod, 721. Second magnetic material layer, 73. Outer shell, 74. Cylindrical cam, 75. Connecting frame, 76. Slide block, 77. Rotating cam, 78. First convex tooth, 8. Connecting pipe, 9. Switch control device, 91. Housing, 911. Second through hole, 912. Third through hole, 92. Gear, 93. Tooth, 94. Second convex tooth, 95. Pressing rod, 96. First spring, 97. Support, 98. Hydraulic cylinder, 99. Piston rod, 991. First through hole, 910. Second spring, 10. Guide rod, 100. Negative pressure extraction pipeline, 200. Water flow, 300. Coal / rock slag; 400. Leg, 500. Connecting rope. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] Refer to Figures 1-9, A special automatic slag and water discharging device for a negative pressure drainage pipeline, comprising a box body 1. A plurality of legs 400 are provided at the bottom of the box body 1 to fix the box body 1. On one side of the box body 1 is a slag storage chamber 11, and on the other side is a water storage chamber 12. The slag storage chamber 11 is located at the upper left position of the water storage chamber 12, and the upper spaces of the slag storage chamber 11 and the water storage chamber 12 are connected. A switchable slag discharge cover 13 is provided at the lower end of the slag storage chamber 11. Inside the upper part of the box body 1, a horizontal partition 14 and a vertical partition 15 are provided. One end of the horizontal partition 14 is fixed on the left inner wall of the slag storage chamber 11, and the other end is fixed to the top end of the vertical partition 15. There is a gap between the upper end of the horizontal partition 14 and the top plate of the box body 1. The vertical partition 15 is placed inside the water storage chamber 12. On the left side wall of the water storage chamber 12, an inclined downward flow guide plate 16 is also provided. An opening is provided between the bottom end of the vertical partition 15 and the flow guide plate 16, and a switchable internal drainage cover 17 is installed at the bottom end of the vertical partition 15. A transition water storage chamber 18 is formed between the vertical partition 15, the flow guide plate 16, the internal drainage cover 17 and the box body 1. The right side of the slag storage chamber 11 is connected to the transition water storage chamber 18, and a filter screen 2 is provided at the connection between the two. A drain pipe 3 is provided on the bottom plate of the box body 1. Below the bottom plate, a connecting plate 4 and a mounting plate 5 are provided. There is an opening between the bottom ends of the connecting plate 4 and the mounting plate 5, corresponding to the water outlet at the bottom of the drain pipe 3. An external drainage cover 6 is switchably installed at the bottom of the mounting plate 5 to open and close the drain pipe 3. A motion state conversion device 7 is also installed in the water storage chamber 12. Above the horizontal partition 14, a connecting pipe 8 and a switch control device 9 are installed. The top end of the connecting pipe 8 sequentially passes through the switch control device 9 and the top plate of the box body 1 and is connected to the negative pressure drainage pipeline 100. An opening is provided on the horizontal partition 14, and the bottom end of the connecting pipe 8 is fixed at the opening. And a break is formed by cutting the connecting pipe 8 horizontally inside the switch control device 9. The motion state conversion device 7 controls the action of the switch control device 9 to control the opening and closing of the break of the connecting pipe 8.

[0035] Refer to Figure 4, the motion state conversion device 7 includes a hydrofoil 71, a connecting rod 72, a cylindrical cam 74 mechanism, and a rotating cam 77. The cylindrical cam 74 mechanism includes a housing 73, a cylindrical cam 74, a connecting frame 75, and a slider 76. The connecting frame 75 and the cylindrical cam 74 are disposed inside the housing 73. The connecting frame 75 is a "U"-shaped frame body. Sliders 76 are respectively provided on the inner sides of the tops of the two vertical frames of the connecting frame 75. The sliders 76 slide on the grooves on the outer wall of the cylindrical cam 74. The bottom end of the connecting rod 72 is fixed above the hydrofoil 71. The top end of the connecting rod 72 passes upward through the housing 73 and is connected to the bottom end of the connecting frame 75. The top end of the cylindrical cam 74 passes out above the housing 73 and is connected to the rotating cam 77. The hydrofoil 71 drives the connecting rod 72 and the connecting frame 75 to move up and down, causing the sliders 76 to slide on the grooves on the outer wall of the cylindrical cam 74, thereby causing the cylindrical cam 74 to rotate in the circumferential direction, and then driving the rotating cam 77 to rotate in the circumferential direction. There is a first convex tooth 78 protruding outward on the rotating cam 77.

[0036] Referring to Figures 5-6 , the switch control device 9 includes a housing 91, a gear 92, gear teeth 93, a second convex tooth 94, a pressing rod 95, a first spring 96, a support 97, a hydraulic cylinder 98, a piston rod 99, and a second spring 910. The housing 91 is fixed on the horizontal partition 14. The gear 92 is installed at one end of the housing 91 through a rotating shaft. A plurality of gear teeth 93 and a second convex tooth 94 are provided in the circumferential direction on the gear 92. The length of the second convex tooth 94 is longer than the length of the gear teeth 93. The hydraulic cylinder 98 is fixed inside the housing 91 through the support 97, and the hydraulic cylinder 98 is in an L shape. Hydraulic oil is filled in the hydraulic cylinder 98. A pressing rod 95 is provided at the top end of the vertical section of the hydraulic cylinder 98. The bottom end of the pressing rod 95 is connected to the bottom end of the horizontal section of the hydraulic cylinder 98 through the first spring 96. A piston rod 99 is provided in the horizontal section of the hydraulic cylinder 98. The cross section of the piston rod 99 is rectangular. A first through hole 991 matching the fracture of the connecting pipe 8 is provided at the front end of the piston rod 99. The front end of the piston rod 99 is connected to one end of the second spring 910. The other end of the second spring 910 is on the left inner wall of the slag storage chamber 11. Second through holes 911 and third through holes 912 for the connecting pipe 8 to pass through are respectively provided on the upper surface and the lower surface of the housing 91. When the second convex tooth 94 rotates to the position of the pressing rod 95, it applies pressure to the pressing rod 95, and the pressing rod 95 moves downward. The hydraulic oil in the hydraulic cylinder 98 forces the piston rod 99 to move forward. At this time, the first through hole 991 on the piston rod 99 moves forward, and the piston rod 99 blocks the fracture of the connecting pipe 8. When the second convex tooth 94 leaves the position of the pressing rod 95, the pressing rod 95 rebounds under the elastic force of the first spring 96, and the piston rod 99 contracts to the original position inside the hydraulic cylinder 98. The first through hole 991 on the piston rod 99 moves backward to the position corresponding to the fracture of the connecting pipe 8, so that the inside of the connecting pipe 8 is unblocked.

[0037] Refer to Figure 7 Figure 7 , the position of the rotating cam 77 corresponds to that of the gear 92, and the first convex tooth 78 on the rotating cam 77 contacts the tooth 93 on the gear 92, enabling the gear 92 to rotate. For each full rotation of the rotating cam 77, the gear 92 will rotate by an angle corresponding to one tooth 93. Therefore, the number of teeth 93 on the gear 92 can be set as required.

[0038] The bottom end of the deflector 16 is connected to the internal drain cover 17 by a connecting rope 500. The function of the connecting rope 500 is to control the distance between the internal drain cover 17 and the connecting rod 72, facilitating the adjustment of the closed state of the internal drain cover 17.

[0039] Refer to Figures 8-9 Figures 8-9 , a first magnetic material layer 171 is provided on the outer surface of the bottom of the internal drain cover 17, and a second magnetic material layer 721 is provided on the outer surface of the connecting rod 72. The first magnetic material layer 171 and the second magnetic material layer 721 have a magnetic force and can attract each other.

[0040] A guide rod 10 is further provided in the water storage chamber 12. The bottom end of the guide rod 10 is fixed to the bottom plate of the box body 1, and the top end of the guide rod 10 penetrates through the float 71 and is slidably connected to the connecting rod 72.

[0041] The float 71 is made of a flame-retardant plastic or a flame-retardant rubber material.

[0042] The rotating cam 77 is made of a flame-retardant plastic or a metal material, the outer shell 73 is made of a flame-retardant plastic or a metal material, the connecting frame 75 and the slider 76 are made of a metal material, and the cylindrical cam 74 is made of a flame-retardant plastic or a metal material.

[0043] Embodiment 2

[0044] The present invention also provides a method for using a special automatic slag and water discharging device for a negative pressure extraction pipeline, which is realized by using the special automatic slag and water discharging device for a negative pressure extraction pipeline in Embodiment 1. The specific implementation steps are as follows:

[0045] 1) Water storage: Refer to Figure 1 Figure 1 , the accumulated water and coal / rock debris 300 in the negative pressure extraction pipeline 100 enter the slag storage chamber 11 through the connecting pipe 8. Under the action of the extraction negative pressure, the slag discharge cover 13 is in a closed state. The water flow 200 and the coal / rock debris 300 gather in the slag storage chamber 11 under their own gravity. The accumulated water flow 200 enters the transition water storage chamber 18 through the filter screen 2. The filter screen 2 can effectively filter the coal / rock debris 300 to prevent it from entering the transition water storage chamber 18;

[0046] At this time, the internal drain cover 17 and the connecting rod 72 are kept in an open state under the action of magnetic force (at this time, the magnetic force is greater than the suction negative pressure acting force), and the water flow 200 entering the transition water storage chamber 18 enters the water storage chamber 12 when the internal drain cover 17 is in an open state; at the same time, under the action of the suction negative pressure, the external drain cover 6 is in a closed state. Therefore, the water flow 200 entering the large-volume water storage chamber 12 will gradually accumulate in the large-volume water storage chamber 12; as the water flow 200 in the water storage chamber 12 accumulates more and more, under the action of buoyancy, the motion state conversion device 7 pushes the internal drain cover 17, and the internal drain cover 17 will gradually enter a closed state (under the action of buoyancy, the float 71 slowly rises, pushing the connecting rod 72 and the connecting frame 75 to drive the slider 76 to slide along the groove on the outer wall of the cylindrical cam 74. When the float 71 rises to contact the internal drain cover 17, it pushes the internal drain cover 17 under the action of buoyancy. At the same time, since the connecting rod 72 gradually enters the outer shell 73 under the push of the float 71, the magnetic force of the connecting rod 72 on the internal drain cover 17 also slowly decreases. Under the combined action of the suction negative pressure acting force and the float 71, the internal drain cover 17 will gradually enter a closed state), and at this time, the special automatic slag-discharging and water-draining device for the negative pressure extraction pipeline is in a water storage state;

[0047] 2) Drainage: Refer to Figure 2 , when the internal drain cover 17 turns to a closed state, the special automatic slag-discharging and water-draining device for the negative pressure extraction pipeline will enter the drainage state; during drainage, since the internal drain cover 17 is in a closed state, the water flow 200 will accumulate more and more in the transition water storage chamber 18. Due to the gravity of the water flow 200, the external drain cover is converted to an open state, and the water flow 200 in the water storage chamber 12 is discharged into the roadway by the drain pipe 3 under the action of gravity;

[0048] During the drainage process, the internal drain cover 17 turns to the initial open state (during the drainage process, the float 71 begins to gradually descend, and at the same time drives the connecting rod 72 to descend; when the connecting rod 72 descends to a certain extent, the magnetic force of the connecting rod 72 on the internal drain cover 17 will be greater than the acting force of the suction negative pressure on the internal drain cover 17. At this time, the internal drain cover 17 turns to an open state), and the special automatic slag-discharging and water-draining device for the negative pressure extraction pipeline enters the water storage state again;

[0049] 3) Slag discharge: Refer to Figure 3, during the repeated process of water storage and drainage of the special automatic slag and water discharge device for negative pressure drainage pipelines, when the motion state conversion device 7 controls the switch control device 9 to act and blocks the break of the control connecting pipe 8 (during water storage and drainage, the up and down movement of the connecting rod 72 is converted into the rotational movement of the rotating cam 77. When the first convex tooth 78 of the rotating cam 77 contacts the tooth 93 of the gear 92, the gear 92 will rotate; whenever the second convex tooth 94 in the gear 92 rotates to contact the pressing rod 95 in the switch control device 9, the pressing rod 95 moves downward, and the hydraulic oil in the hydraulic cylinder 98 forces the piston rod 99 to move forward. At this time, the first through hole 991 on the piston rod 99 moves forward, and the piston rod 99 blocks the break of the connecting pipe 8), disconnecting the connecting pipe 8 from the negative pressure drainage pipeline 100, and the special automatic slag and water discharge device for negative pressure drainage pipelines will enter the slag discharge state;

[0050] At this time, under the action of gravity, the slag discharge cover 13 will open, and the coal / rock slag 300 and accumulated water stored in the slag storage chamber 11 will be discharged into the roadway; at the same time, due to the disappearance of the drainage negative pressure, the water flow 200 in the transition water storage chamber 18 enters the water storage chamber 12 under the action of gravity, and the water flow 200 in the water storage chamber 12 is discharged into the roadway from the drainage pipe 3 under the action of gravity. During its drainage process, the motion state conversion device 7 will continue to work, control the switch control device 9 to act through the motion state conversion device 7, and control the break of the connecting pipe 8 to open (when the second convex tooth 94 on the gear 92 no longer applies force to the pressing rod 95 due to rotation, the pressing rod 95 bounces up, and under the action of the second spring 910, the piston rod 99 returns to its original position, and the first through hole 991 on the piston rod 99 moves backward to the break of the connecting pipe 8), the inside of the connecting pipe 8 is unblocked, and the drainage negative pressure acts on the automatic slag and water discharge device again; at this time, the slag discharge cover 13 and the external drainage cover 6 are in a closed state under the action of the drainage negative pressure, and the entire special automatic slag and water discharge device for negative pressure drainage pipelines enters the water storage state again.

[0051] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An automatic slag and water discharging device dedicated to a negative pressure drainage pipeline, characterized in that, It includes a box body. On one side of the box body is a slag storage chamber, and on the other side is a water storage chamber. The slag storage chamber is located at the upper left position of the water storage chamber, and the upper spaces of the slag storage chamber and the water storage chamber are connected. A switchable slag discharge cover is provided at the lower end of the slag storage chamber. Inside the upper part of the box body, there are a horizontal partition board and a vertical partition board. One end of the horizontal partition board is fixed on the left inner wall of the slag storage chamber, and the other end is fixed to the top end of the vertical partition board. There is a gap between the upper end of the horizontal partition board and the top plate of the box body. The vertical partition board is placed inside the water storage chamber. On the left side wall of the water storage chamber, there is also an inclined downward guide plate. There is an opening between the bottom end of the vertical partition board and the guide plate, and an internally switchable drain cover is installed at the bottom end of the vertical partition board. The vertical partition board, the guide plate, the internally switchable drain cover and the box body form a transition water storage chamber. The right side of the slag storage chamber is connected to the transition water storage chamber, and a filter screen is provided at the connection between the two. A drain pipe is provided on the bottom plate of the box body. Below the bottom plate, there are a connecting plate and a mounting plate. There is an opening between the bottom ends of the connecting plate and the mounting plate, corresponding to the water outlet at the bottom of the drain pipe. An externally switchable drain cover is installed at the bottom of the mounting plate to realize the opening and closing of the drain pipe. A motion state conversion device is also installed in the water storage chamber. Above the horizontal partition board, there is a connecting pipe and a switch control device. The top end of the connecting pipe sequentially passes through the switch control device and the top plate of the box body and is connected to a negative pressure extraction pipeline. There is an opening on the horizontal partition board, and the bottom end of the connecting pipe is fixed at the opening. And inside the switch control device, the connecting pipe is cut horizontally along to form a break. The motion state conversion device controls the action of the switch control device to control the opening and closing of the break of the connecting pipe; The motion state conversion device includes a water float, a connecting rod, a cylindrical cam mechanism and a rotating cam. The cylindrical cam mechanism includes a housing, a cylindrical cam, a connecting frame and a slider. The connecting frame and the cylindrical cam are placed inside the housing. The connecting frame is a "U"-shaped frame body. Inside the top ends of the two vertical frame bodies of the connecting frame, there are respectively sliders. The sliders slide on the grooves on the outer wall of the cylindrical cam. The bottom end of the connecting rod is fixed above the water float, and the top end of the connecting rod passes upward through the housing and is connected to the bottom end of the connecting frame. The top end of the cylindrical cam passes out above the housing and is connected to the rotating cam. The water float drives the connecting rod and the connecting frame to move up and down, causing the sliders to slide on the grooves on the outer wall of the cylindrical cam, so that the cylindrical cam rotates in the circumferential direction, thereby driving the rotating cam to rotate in the circumferential direction. There is a first convex tooth protruding outward on the rotating cam.

2. The special automatic slag and water discharging device for negative pressure drainage pipeline according to claim 1, characterized in that The switch control device includes a housing, a gear, gear teeth, a second convex tooth, a pressing rod, a first spring, a support, a hydraulic cylinder, a piston rod, and a second spring. The bottom surface of the housing is fixed on a horizontal partition, and the left end surface of the housing is fixed on the left inner wall of the slag storage chamber. The gear is installed at one end of the housing through a rotating shaft. A plurality of gear teeth and a second convex tooth are arranged in the circumferential direction on the gear. The length of the second convex tooth is longer than that of the gear teeth. The hydraulic cylinder is fixed inside the housing through a support, and the hydraulic cylinder is in an L shape. Hydraulic oil is filled in the hydraulic cylinder. A pressing rod is arranged at the top of the vertical section of the hydraulic cylinder. The bottom end of the pressing rod is connected to the bottom end of the horizontal section of the hydraulic cylinder through a first spring. A piston rod is arranged in the horizontal section of the hydraulic cylinder. The cross section of the piston rod is rectangular. A first through hole is arranged at the front end of the piston rod, and the front end of the piston rod is connected to one end of a second spring. The other end of the second spring passes through the housing and is connected to the left inner wall of the slag storage chamber. Second through holes and third through holes for connecting pipes to pass through are respectively arranged on the upper surface and the lower surface of the housing. When the second convex tooth rotates to the position of the pressing rod, pressure is applied to the pressing rod, and the pressing rod moves downward. The hydraulic oil in the hydraulic cylinder is stressed to make the piston rod move forward. At this time, the first through hole on the piston rod moves forward, and the piston rod seals the fracture of the connecting pipe. When the second convex tooth leaves the position of the pressing rod, the pressing rod bounces up under the elastic force of the first spring, the piston rod contracts to the original position inside the hydraulic cylinder, and the first through hole on the piston rod moves backward to correspond to the position of the fracture of the connecting pipe, so that the inside of the connecting pipe is unblocked.

3. The special automatic slag and water discharging device for a negative pressure drainage pipeline according to claim 1, characterized in that, The bottom end of the deflector is connected to the internal drain cover through a connecting rope.

4. The special automatic slag and water discharging device for a negative pressure drainage pipeline according to claim 1, characterized in that, A first magnetic material layer is arranged on the outer surface of the bottom of the internal drain cover, and a second magnetic material layer is arranged on the outer surface of the connecting rod.

5. The automatic slag and water discharging device dedicated to a negative pressure drainage pipeline according to claim 1, characterized in that, A guide rod is further arranged in the water storage chamber. The bottom end of the guide rod is fixed to the bottom plate of the box body, and the top end of the guide rod penetrates through the float and is slidably connected to the connecting rod.

6. The special automatic slag and water discharging device for a negative pressure drainage pipeline according to claim 1, characterized in that, The float is made of a flame-retardant plastic or flame-retardant rubber material.

7. The usage method of a special automatic slag and water discharging device for a negative pressure drainage pipeline according to any one of claims 1-6, characterized in that, The specific implementation steps are as follows: 1) Water storage: The accumulated water and coal / rock debris in the negative pressure drainage pipeline enter the slag storage chamber through the connecting pipe. Under the action of the drainage negative pressure, the slag discharge cover is in a closed state. The water flow and coal / rock debris gather in the slag storage chamber under the action of their own gravity. The accumulated water flow enters the transition water storage chamber through the filter screen. The filter screen can effectively filter coal / rock debris to prevent it from entering the transition water storage chamber. At this time, the internal drain cover and the connecting rod are kept in an open state under the action of magnetic force. The water flow entering the transition water storage chamber enters the water storage chamber when the internal drain cover is in an open state. At the same time, under the action of the drainage negative pressure, the external drain cover is in a closed state. Therefore, the water flow entering the large-volume water storage chamber will gradually accumulate in the large-volume water storage chamber. As the water flow in the water storage chamber accumulates more and more, under the action of buoyancy, the motion state conversion device pushes the internal drain cover, and the internal drain cover will gradually enter a closed state. At this time, the special automatic slag discharge and water release device for the negative pressure drainage pipeline is in a water storage state. 2) Drainage: When the internal drainage cover turns to the closed state, the special automatic slag-discharging and water-draining device for the negative-pressure drainage pipeline will enter the drainage state; during drainage, since the internal drainage cover is in the closed state, water will accumulate more and more in the transition water storage chamber. Due to the gravity of the water flow, the external drainage cover will be converted to the open state, and the water flow in the water storage chamber will be discharged into the roadway through the drain pipe under the action of gravity; During the drainage process, the internal drainage cover turns to the initial open state, and the special automatic slag-discharging and water-draining device for the negative-pressure drainage pipeline enters the water storage state again; 3) Slag discharge: During the repeated process of water storage and drainage states of the special automatic slag-discharging and water-draining device for the negative-pressure drainage pipeline, when the motion state conversion device controls the switch control device to act and blocks the connection port of the connecting pipe, disconnecting the connecting pipe from the negative-pressure drainage pipeline, the special automatic slag-discharging and water-draining device for the negative-pressure drainage pipeline will enter the slag discharge state; At this time, under the action of gravity, the slag discharge cover will open, and the coal / rock debris and accumulated water stored in the slag storage chamber will be discharged into the roadway; at the same time, since the drainage negative pressure disappears, the water flow in the transition water storage chamber will enter the water storage chamber under the action of gravity, and the water flow in the water storage chamber will be discharged into the roadway from the drain pipe under the action of gravity. During its drainage process, the motion state conversion device will continue to work, control the switch control device to act through the motion state conversion device, control the connection port of the connecting pipe to open, and the inside of the connecting pipe is penetrated, and the drainage negative pressure acts on the automatic slag-discharging and water-draining device again; at this time, the slag discharge cover and the external drainage cover are in the closed state under the action of the drainage negative pressure, and the entire special automatic slag-discharging and water-draining device for the negative-pressure drainage pipeline enters the water storage state again.

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