A closed slag discharge and coal-water-gas separation device to prevent gas outburst

Abstract

The application discloses a kind of gas emission prevention closed type deslagging and coal water gas separation device, including fixed plate, the fixed plate upper end is provided with coal water gas separation tank, rotary deslagging device, helical coal water separation mechanism, hydraulic control mechanism, coal water gas separation tank side is provided with air inlet, inlet, coal water separation tank top is provided with exhaust port, coal water separation tank is provided with first discharge port, second discharge port, first discharge port is connected with helical coal water separation mechanism by rotary deslagging device, second discharge port is connected with helical coal water separation mechanism by feed pipe; The fixed plate bottom end is provided with track walking mechanism, track walking mechanism, helical coal water separation mechanism are connected with the hydraulic control mechanism being arranged on fixed plate.

Description

Technical Field

[0001] The present invention relates to the field of coal mining, and in particular to a closed slag discharge and coal-water-gas separation device for preventing gas outburst. Background Art

[0002] Coal seams are well-developed and lack the conditions for mining protective layers. Therefore, pre-extraction through-the-layer drilling has become an inevitable choice for regional gas control. However, due to the high pressure and content of coal seam gas, it is very easy for coal dust and gas to be continuously ejected from the borehole within a short period of time during underground drilling construction. If control measures are not in place, the gas concentration at the construction site will exceed the limit, and even cause a gas accident. In particular, the promotion and application of hydraulic permeability enhancement measures in single low-permeability coal seams has further aggravated the blowout intensity of the borehole, causing the simple blowout preventer to fail. Even if a soft seal is used at the end of the blowout preventer for active protection, it is still impossible to effectively prevent the ejection of borehole gas under severe blowout conditions. Therefore, it is necessary to develop a slag removal device that can prevent gas ejection and effectively achieve gas separation to solve the above problems. Summary of the Invention

[0003] The object of the present invention is to provide a closed type slag discharge and coal-water-gas separation device with simple structure and convenient use to prevent gas outburst in order to solve the above problems.

[0004] In order to achieve the above object, the technical solution of the present invention is:

[0005] A closed slag discharge and coal-water-gas separation device for preventing gas outburst comprises a fixed plate, the upper end of which is provided with a coal-water-gas separation box, a rotary slag discharger, a spiral coal-water separation mechanism, and a hydraulic control mechanism, the side of the coal-water-gas separation box is provided with an air inlet and a slag inlet, the top of the coal-water separation box is provided with an exhaust port, the coal-water separation box is provided with a first discharge port and a second discharge port, the first discharge port is connected to the spiral coal-water separation mechanism through the rotary slag discharger, and the second discharge port is connected to the spiral coal-water separation mechanism through a feed pipe; a crawler walking mechanism is provided at the bottom end of the fixed plate, and the crawler walking mechanism and the spiral coal-water separation mechanism are both connected to the hydraulic control mechanism provided on the fixed plate.

[0006] Furthermore, the coal-water-gas separation box is in an inverted L-shape, and a partition is provided in the coal-water-gas separation box, and the interior of the coal-water-gas separation box is divided into a main buffer cavity located above and a sub-buffer cavity located below by the partition, and a transition gap is provided between the partition and the inner side wall of the coal-water-gas separation box, and the main buffer cavity is connected with the sub-buffer cavity through the transition gap; the air inlet and the slag inlet are arranged on the side wall of the main buffer cavity, the exhaust port is arranged at the top of the main buffer cavity, the first discharge port is arranged at the bottom of the main buffer cavity, and the second discharge port is arranged on one side of the bottom of the sub-buffer cavity; the bottom of the coal-water separation box is provided with a storage cavity, the storage cavity is arranged at the bottom of the sub-buffer cavity, and one side of the storage cavity is provided with a storage door that can be opened and closed.

[0007] Furthermore, the rotary slag discharger includes an air motor, a reducer, a slag discharger shell, and a rotating impeller. The slag discharger shell is in the shape of a horizontal cylindrical shell. The slag discharger shell is fixedly connected between the coal-water-gas separation box and the spiral coal-water separation mechanism. The top of the slag discharger shell is connected to the first discharge port, and the bottom of the slag discharger shell is connected to the spiral coal-water separation mechanism; the rotating impeller is arranged in the slag discharger shell and the rotating impeller is coaxially arranged with the slag discharger shell. The air motor is fixedly connected to the slag discharger shell through the reducer. The air motor is connected to the reducer by transmission. The output shaft of the reducer penetrates into the slag discharger shell and is fixedly connected to the center position of the rotating impeller.

[0008] Furthermore, the spiral coal-water separation mechanism includes a fixed pipe, a support pipe, a conveying auger, and a first hydraulic motor; the fixed pipe is arranged in an inclined shape and the axial ends of the fixed pipe are sealed, a first feed port is arranged above the lower end of the fixed pipe and is connected to the bottom end of the slag discharger shell through the first feed port, a second feed port is arranged at the lower end of the fixed pipe and the second feed port is connected to the second discharge port through a feed pipe, and a pneumatic butterfly valve is arranged in the feed pipe; a discharge port is arranged at the bottom of the higher end of the fixed pipe; a conveying auger is arranged in the fixed pipe The long conveying auger can rotate relative to the fixed pipe, and one end of the conveying auger extends out from one axial end of the fixed pipe and is transmission-connected to a first hydraulic motor fixedly connected to the end head of the fixed pipe; a support pipe is sleeved on the outer side of the middle part of the fixed pipe, the support pipe and the fixed pipe are coaxially arranged and the two ends of the support pipe are sealedly connected to the outer side wall of the fixed pipe, a water filtering gap is provided on the side wall of the middle part of the fixed pipe and the water filtering gap is located inside the support pipe; a drain outlet is provided at the bottom of the lower end of the support pipe, and a support flange is provided at the bottom end of the support pipe and is fixedly connected to the upper end face of the fixed plate through the support flange.

[0009] Furthermore, a coal guide plate is provided below the discharge port of the fixed pipe. The coal guide plate is provided in an inclined shape and a higher end of the coal guide plate is rotatably connected to the fixed pipe.

[0010] Furthermore, a metering mechanism is provided under the coal guide plate; the metering mechanism includes a metering box body, which is provided with openings at the upper and lower ends, and guide slide rails are fixedly connected to both sides of the bottom end of the metering box body, and one end of the two guide slide rails in the length direction is fixedly connected to the fixed plate, and a movable plate is slidably connected between the two guide slide rails, and a hydraulic push rod is provided at the bottom end of the movable plate, one end of the hydraulic push rod is connected to the bottom end of the movable plate, and the other end of the hydraulic push rod is fixedly connected to the fixed plate, and the hydraulic push rod is connected to the hydraulic control pump pipeline provided on the coal-water-gas separation box.

[0011] Furthermore, the crawler walking mechanism includes a second hydraulic motor, a power wheel, and a driven wheel; the power wheel and the driven wheel are connected to the bottom end of the fixed plate through mounting parts, a crawler is connected between the power wheel and the driven wheel, and the power wheel is connected to the second hydraulic motor arranged on the fixed plate.

[0012] Furthermore, the hydraulic control mechanism includes an explosion-proof motor, a hydraulic oil tank and two hydraulic oil pumps. The explosion-proof motor, the hydraulic oil tank and the two hydraulic oil pumps are all fixedly connected to a fixed plate. The explosion-proof motor is respectively connected to the two hydraulic oil pumps in a transmission manner. The two hydraulic oil pumps are both connected to the hydraulic oil tank pipelines. The two hydraulic oil pumps are respectively arranged corresponding to the first hydraulic motor and the second hydraulic motor, and the hydraulic oil pumps are respectively connected to the corresponding hydraulic motor pipelines.

[0013] Furthermore, a pneumatic control switch is provided on the coal-water-gas separation box, one end of the pneumatic control switch is connected to the gas source pipeline, and the other end of the pneumatic control switch is connected to the pneumatic motor and the pneumatic butterfly valve respectively.

[0014] Furthermore, a buffer vent is provided at the top of the coal-water-gas separation box and a gas buffer mechanism is provided outside the buffer vent; the gas buffer mechanism includes an elastically stacked buffer shell, one end of the buffer shell is sealed, and the other end of the buffer shell is connected to the buffer vent.

[0015] Compared with the prior art, the present invention has the following advantages and positive effects:

[0016] When the present invention is in use, the air inlet and slag inlet on the coal-water-gas separation box are respectively connected to the slag discharge port and air outlet pipes arranged in the blowout prevention device outside the borehole, and the exhaust port at the top of the coal-water-gas separation box is connected to the gas extraction pipeline; when the drilling operation is carried out, the coal slag, coal water and gas will enter the coal-water-gas separation box together, and the gas will be discharged into the gas extraction pipeline through the exhaust port at the top of the coal-water-gas separation box, and the coal slag and coal water are quantitatively discharged into the spiral coal-water separation mechanism through the rotary slag discharger, and the coal slag and coal water are separated after the spiral conveying operation of the spiral coal-water separation mechanism, and finally the coal slag with gas and coal water removed is obtained and collected; the whole device has a simple structure and is easy to operate, which effectively prevents the occurrence of gas ejection in the borehole during drilling, and effectively realizes the separation operation of coal slag and coal water, making coal mining operations more convenient and further improving the use effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a main structural diagram of the present invention;

[0019] Figure 2 This is the main structural diagram of the coal-water-gas separation box;

[0020] Figure 3 This is a cross-sectional structural diagram of the coal-water separation box;

[0021] Figure 4 This is the main structural diagram of the rotary slag discharger;

[0022] Figure 5 It is a cross-sectional view of the connection structure between the slag discharger housing and the rotating impeller;

[0023] Figure 6 It is a structural diagram of the spiral coal-water separation mechanism;

[0024] Figure 7 It is the main structural diagram of the metrological mechanism;

[0025] Figure 8 for Figure 7 AA cross-sectional structural diagram;

[0026] Figure 9 This is the main structural diagram of the hydraulic control mechanism;

[0027] Figure 10It is a top view structural diagram of the hydraulic control mechanism;

[0028] Figure 11 Schematic diagram of the structure of the gas buffer mechanism. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the scope of protection of the present invention.

[0030] like Figure 1 As shown, this embodiment discloses a closed slag discharge and coal-water-gas separation device for preventing gas outburst, comprising a fixed plate 1, the upper end of which is provided with a coal-water-gas separation box 2, a rotary slag discharger 3, a spiral coal-water separation mechanism 4, and a hydraulic control mechanism 7, the side of the coal-water-gas separation box 2 is provided with an air inlet and a slag inlet, the top of the coal-water separation box 2 is provided with an exhaust port, the coal-water separation box 2 is provided with a first discharge port 201 and a second discharge port 202, the first discharge port 201 is connected to the spiral coal-water separation mechanism 4 through the rotary slag discharger 3, and the second discharge port 202 is connected to the spiral coal-water separation mechanism 4 through the feed pipe 46; the bottom end of the fixed plate 1 is provided with a crawler walking mechanism 6, and the crawler walking mechanism 6 and the spiral coal-water separation mechanism 4 are both connected to the hydraulic control mechanism 7 provided on the fixed plate 1.

[0031] like Figure 11 As shown, a buffer vent is also provided at the top of the coal-water-gas separation box 2 and a gas buffer mechanism is provided outside the buffer vent; the gas buffer mechanism includes an elastically stacked buffer shell 10, one end of the buffer shell 10 is sealed, and the other end of the buffer shell 10 is connected to the buffer vent.

[0032] The buffer shell can be expanded and contracted according to the amount of gas entering the coal-water-gas separation box. When the amount of gas entering the coal-water-gas separation box is too much, more gas will enter and remain in the buffer shell to expand the volume of the buffer shell. After the gas in the coal-water-gas separation box is slowly discharged from the exhaust port, the buffer shell will shrink and return to its original shape under the action of elasticity; it can realize the buffering operation of gas discharge, avoid the situation where a large amount of gas flows out into the gas extraction pipeline and affects the safety of gas extraction, and further improve the use effect of the present invention.

[0033] like Figure 2 、 Figure 3As shown, the coal-water-gas separation box 2 is in an inverted L-shape, and a partition plate 203 is provided in the coal-water-gas separation box 2. The interior of the coal-water-gas separation box 2 is divided into a main buffer cavity 204 located at the top and a sub-buffer cavity 205 located at the bottom by the partition plate 203. A transition gap 206 is provided between the partition plate 203 and the inner side wall of the coal-water-gas separation box 2, and the main buffer cavity 204 is connected to the sub-buffer cavity 205 through the transition gap 206; the air inlet, The slag inlet is arranged on the side wall of the main buffer cavity 204, the exhaust port and the buffer vent are arranged at the top of the main buffer cavity 204, the first discharge port 201 is arranged at the bottom of the main buffer cavity 204, and the second discharge port 202 is arranged on one side of the bottom end of the auxiliary buffer cavity 205; the coal-water separation box 2 is provided with a storage cavity 207 at the bottom end, and the storage cavity 207 is provided at the bottom end of the auxiliary buffer cavity 205, and a storage door 208 that can be opened and closed is provided on one side of the storage cavity 207.

[0034] During the drilling operation, coal slag, coal water and gas will enter the main buffer chamber together, and the gas will be discharged directly from the exhaust port into the gas extraction pipeline. The coal slag and coal water mixture will accumulate in the main buffer chamber. The main buffer chamber is a funnel structure, which discharges the mixture into the rotary slag discharger through the first discharge port at the bottom; when there is too much mixture, the mixture will flow into the secondary buffer chamber through the transition gap, and finally enter the spiral coal-water separation mechanism from the second discharge port and the feed pipe. A pneumatic butterfly valve that can be controlled to open and close is provided in the feed pipe.

[0035] like Figure 4 、 Figure 5 As shown, the rotary slag discharger 3 includes an air motor 31, a reducer 32, a slag discharger shell 33, and a rotating impeller 34. The slag discharger shell 33 is in the shape of a horizontal cylindrical shell. The slag discharger shell 33 is fixedly connected between the coal-water-gas separation box 2 and the spiral coal-water separation mechanism 4. The top of the slag discharger shell 33 is connected to the first discharge port 201, and the bottom of the slag discharger shell 33 is connected to the spiral coal-water separation mechanism 4; the rotating impeller 34 is arranged in the slag discharger shell 33 and the rotating impeller 34 is coaxially arranged with the slag discharger shell 33. The air motor 31 is fixedly connected to the slag discharger shell 33 through the reducer 32. The air motor 31 is transmission-connected to the reducer 32. The output shaft of the reducer 32 penetrates into the slag discharger shell 33 and is fixedly connected to the center position of the rotating impeller 34.

[0036] When the rotary slag discharger is working, the pneumatic motor will drive the rotary impeller to rotate, thereby stirring the coal slag and coal-water mixture that enters the slag discharger shell from the top to the bottom of the slag discharger shell, and finally enters the spiral coal-water separation mechanism, which realizes the quantitative feeding operation of the spiral coal-water separation mechanism, avoids the spiral coal-water separation mechanism from being blocked or stuck due to excessive feeding, and further improves the use effect of the present invention.

[0037] The coal-water-gas separation box 2 is provided with a pneumatic control switch 9, one end of which is connected to an external gas source pipeline, and the other end of which is connected to the pneumatic motor 31 and the pneumatic butterfly valve 412. The pneumatic control switch 9 can control the opening and closing states of the pneumatic motor 31 and the pneumatic butterfly valve 412.

[0038] like Figure 6 As shown, the spiral coal-water separation mechanism 4 includes a fixed pipe 41, a support pipe 44, a conveying auger 42, and a first hydraulic motor 43; the fixed pipe 41 is arranged in an inclined shape and the fixed pipe 41 is sealed at both axial ends, a first feed port 45 is provided above the lower end of the fixed pipe 41 and is connected to the bottom end of the slag discharger shell 33 through the first feed port 45, a second feed port is provided at the lower end of the fixed pipe 41 and the second feed port is connected to the second discharge port 202 through a feed pipe 46, and a pneumatic butterfly valve 412 is provided in the feed pipe 46; a discharge port 410 is provided at the bottom of the higher end of the fixed pipe 41; a conveying auger 42 is provided in the fixed pipe 41 and the conveying auger 42 can rotate relative to the fixed pipe 41 The conveying auger 42 is movable, and one end of the conveying auger 42 extends from one axial end of the fixed pipe 41 and is transmission-connected to the first hydraulic motor 43 fixedly connected to the end of the fixed pipe 41; a support pipe 44 is sleeved on the outer side of the middle part of the fixed pipe 41, and a maintenance door 49 that can be opened and closed is provided on the top side wall of the support pipe 44. The support pipe 44 is coaxially arranged with the fixed pipe 41 and the two ends of the support pipe 44 are sealed with the outer side wall of the fixed pipe 41. A number of water filtering gaps with a width of 0.5 mm are provided on the middle side wall of the fixed pipe 41, and the water filtering gaps are located in the support pipe 44; a drain outlet 48 is provided at the bottom of the lower end of the support pipe 44, and a support flange 47 is provided at the bottom end of the support pipe 44 and is fixedly connected to the upper end face of the fixed plate 1 through the support flange 47.

[0039] A coal guide plate 411 is provided below the discharge port 410 of the fixed pipe 41 . The coal guide plate 411 is provided in an inclined shape, and a higher end of the coal guide plate 411 is rotatably connected to the fixed pipe 41 .

[0040] After the coal slag and coal-water mixture enters the fixed pipe through the rotary slag discharger, it will move from the lower end of the fixed pipe to the higher end under the rotation of the conveying auger. After passing through the water filtering gap, the coal water will flow out from the water filtering gap and be discharged into the drainage pipe through the drain outlet. The coal slag will eventually be transported to the discharge port for discharge. At the same time, the rotating design of the coal guide plate can discharge the coal slag discharged from the discharge port according to demand. When a certain amount of coal slag and coal-water mixture accumulates in the auxiliary buffer chamber, the pneumatic butterfly valve can be opened to allow the coal slag and coal-water mixture in the auxiliary buffer chamber to enter the fixed pipe through the feed pipe, which can also perform water filtering and slag discharge operations.

[0041] like Figure 7 、 Figure 8 As shown, a metering mechanism 5 is provided below the coal guide plate 411; the metering mechanism 5 includes a metering box 51, which is provided with openings at the upper and lower ends, and guide slide rails 54 are fixedly connected to both sides of the bottom end of the metering box 51, and one end of the two guide slide rails 54 in the length direction is fixedly connected to the fixed plate 1, and an inclined guide plate 55 is provided between the inner side of the bottom end of the metering box 51 and the guide slide rail 54, and a movable plate 52 is slidably connected between the two guide slide rails 54, and a hydraulic push rod 53 is provided at the bottom end of the movable plate 52, one end of the hydraulic push rod 53 is connected to the bottom end of the movable plate 52, and the other end of the hydraulic push rod 53 is fixedly connected to the fixed plate 1, the hydraulic push rod 53 is connected to the hydraulic control pump pipeline provided on the coal-water-gas separation box 2, and the hydraulic control pump is controlled by the control lever 8.

[0042] The coal slag from which the coal water is filtered out will fall into the metering box. After the metering box is filled, the hydraulic push rod is controlled by the operating lever of the hydraulic control pump, so that the movable plate slides along the guide rail and opens the bottom of the metering box, allowing the coal slag to fall into the mine car or other loading equipment; after the unloading is completed, the operating lever of the hydraulic control pump is operated in the reverse direction to close the movable plate again and perform the material receiving operation again.

[0043] like Figure 9 As shown, the crawler walking mechanism 6 includes a second hydraulic motor, a power wheel 61, and a driven wheel 62; the power wheel 61 and the driven wheel 62 are connected to the bottom end of the fixed plate 1 through mounting parts, and a crawler track 63 is sleeved between the power wheel 61 and the driven wheel 62. The crawler track 63 is transmission-connected to the power wheel 61 and the driven wheel 62, and the power wheel 61 is transmission-connected to the second hydraulic motor provided on the fixed plate 1. The operation of the second hydraulic motor can drive the power wheel 61 to rotate, thereby causing the driven wheel 62 and the crawler track 63 to rotate and walk.

[0044] like Figure 9 、 Figure 10 As shown, the hydraulic control mechanism includes an explosion-proof motor 71, a hydraulic oil tank 73 and two hydraulic oil pumps 72. The explosion-proof motor 71, the hydraulic oil tank 73 and the two hydraulic oil pumps 72 are all fixedly connected to the fixed plate 1. The explosion-proof motor 71 is respectively connected to the two hydraulic oil pumps 72 in a transmission manner. The two hydraulic oil pumps 72 are both connected to the hydraulic oil tank 73 by pipelines. The two hydraulic oil pumps 72 are respectively arranged corresponding to the first hydraulic motor 43 and the second hydraulic motor, and the hydraulic oil pumps 72 are respectively connected to the corresponding hydraulic motor pipelines.

[0045] The two hydraulic oil pumps are driven by an explosion-proof motor to work, and the two hydraulic oil pumps respectively drive the first hydraulic motor and the second hydraulic motor to perform power transmission operations. The hydraulic oil pump and the hydraulic motor are connected to the hydraulic oil tank through the oil inlet pipe and the oil return pipe respectively. At the same time, a cooler is provided on the return pipe to cool the returning hydraulic oil.

[0046] This device is used according to the following steps:

[0047] S1: Use a flatbed truck to transport the device to the vicinity of the work area, temporarily connect the power line, drive the crawler vehicle to the construction drilling site, and connect the gas source pipeline, drainage pipeline and other pipelines;

[0048] S2: Connect the slag port and air inlet on the coal-water-gas separation box to the slag discharge port and air outlet of the drilling blowout prevention device through steel hoses, and connect the exhaust port on the coal-water-gas separation box to the gas extraction pipeline through steel hoses;

[0049] S3: Connect the downhole compressed air system pipeline to the gas filter through the air hose;

[0050] S4: Connect the power switch of the explosion-proof motor to the underground power supply;

[0051] S5: Connect the drain port on the spiral coal-water separator to the drainage pipe through a steel hose, so that the drainage pipe is connected to the nearby drainage system and finally enters the underground drainage system;

[0052] S6: One pneumatic control switch controls the rotation speed of the closed rotary slag discharger, and the other controls the coal and water discharge in the auxiliary buffer chamber;

[0053] S7: After being processed by the spiral coal-water separator, the coal falls into the metering box through the coal guide plate. Then, the hydraulic push rod is used to pull open the movable plate to unload the coal into the coal chute. Alternatively, the coal can fall into an empty mine car through the coal guide plate to complete metering and transportation.

[0054] S8: When the drilling begins to be hydraulically punched or hydraulically slotted to increase permeability, turn on the power switch and the rotary slag discharger gas source switch, start the rotary slag discharger and the explosion-proof motor, and start the rotary slag discharger and the spiral coal-water separation mechanism. The coal-water-gas mixture in the borehole enters the coal-water-gas separation box through the coal-water slag discharge port and the gas outlet of the blowout prevention device, and the coal-water-gas separation box separates the coal-water-gas channels. The gas enters the underground extraction pipeline through the exhaust port on the coal-water-gas separation box. The coal-water mixture enters the spiral coal-water separation mechanism in a quantitative manner through the rotary slag discharger. The coal and water in the coal-water mixture are separated by the water filtration gap of the spiral coal-water separation mechanism and the centrifugal rotation of the conveying auger. The coal and water are led from the drain port to the drainage system through the steel hose, and the coal slag is conveyed to the discharge port through the conveying auger and falls onto the coal guide plate, and finally enters the metering box through the coal guide plate.

[0055] When the present invention is in use, the air inlet and slag inlet on the coal-water-gas separation box are respectively connected to the slag discharge port and air outlet pipes arranged in the blowout prevention device outside the borehole, and the exhaust port at the top of the coal-water-gas separation box is connected to the gas extraction pipeline; when the drilling operation is carried out, the coal slag, coal water and gas will enter the coal-water-gas separation box together, and the gas will be discharged into the gas extraction pipeline through the exhaust port at the top of the coal-water-gas separation box, and the coal slag and coal water are quantitatively discharged into the spiral coal-water separation mechanism through the rotary slag discharger, and the coal slag and coal water are separated after the spiral conveying operation of the spiral coal-water separation mechanism, and finally the coal slag with gas and coal water removed is obtained and collected; the whole device has a simple structure and is easy to operate, which effectively prevents the occurrence of gas ejection in the borehole during drilling, and effectively realizes the separation operation of coal slag and coal water, making coal mining operations more convenient and further improving the use effect of the present invention.

Claims

1. A closed type slag discharge and coal-water-gas separation device for preventing gas outburst, comprising a fixed plate, characterized in that: The upper end of the fixed plate is provided with a coal-water-gas separation box, a rotary slag discharger, a spiral coal-water separation mechanism, and a hydraulic control mechanism. The side of the coal-water-gas separation box is provided with an air inlet and a slag inlet, and the top of the coal-water-gas separation box is provided with an exhaust port. The coal-water-gas separation box is provided with a first discharge port and a second discharge port. The first discharge port is connected to the spiral coal-water separation mechanism through the rotary slag discharger, and the second discharge port is connected to the spiral coal-water separation mechanism through a feed pipe; the bottom end of the fixed plate is provided with a crawler walking mechanism, and the crawler walking mechanism and the spiral coal-water separation mechanism are both connected to the hydraulic control mechanism provided on the fixed plate; The coal-water-gas separation box is in an inverted L-shape, and a partition is provided in the coal-water-gas separation box, and the interior of the coal-water-gas separation box is divided into a main buffer cavity located at the top and a sub-buffer cavity located at the bottom by the partition. A transition gap is provided between the partition and the inner side wall of the coal-water-gas separation box, and the main buffer cavity is connected to the sub-buffer cavity through the transition gap; the air inlet and the slag inlet are provided on the side wall of the main buffer cavity, the exhaust port is provided at the top of the main buffer cavity, the first discharge port is provided at the bottom end of the main buffer cavity, and the second discharge port is provided at one side of the bottom end of the sub-buffer cavity; a storage cavity is provided at the bottom end of the coal-water-gas separation box, the storage cavity is provided at the bottom end of the sub-buffer cavity, and a storage door that can be opened and closed is provided on one side of the storage cavity; The top of the coal-water-gas separation box is also provided with a buffer vent and a gas buffer mechanism is provided outside the buffer vent; the gas buffer mechanism includes an elastically stacked buffer shell, one end of the buffer shell is sealed, and the other end of the buffer shell is connected to the buffer vent.

2. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 1, characterized in that: The rotary slag discharger includes an air motor, a reducer, a slag discharger shell, and a rotating impeller. The slag discharger shell is in the shape of a horizontal cylindrical shell. The slag discharger shell is fixedly connected between the coal-water-gas separation box and the spiral coal-water separation mechanism. The top end of the slag discharger shell is connected to the first discharge port, and the bottom end of the slag discharger shell is connected to the spiral coal-water separation mechanism; the rotating impeller is arranged in the slag discharger shell and the rotating impeller and the slag discharger shell are coaxially arranged. The air motor is fixedly connected to the slag discharger shell through the reducer. The air motor is connected to the reducer in transmission. The output shaft of the reducer penetrates into the slag discharger shell and is fixedly connected to the center position of the rotating impeller.

3. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 2, characterized in that: The spiral coal-water separation mechanism includes a fixed pipe, a support pipe, a conveying auger, and a first hydraulic motor; the fixed pipe is arranged in an inclined shape and the axial ends of the fixed pipe are sealed, a first feed port is arranged above the lower end of the fixed pipe and is connected to the bottom end of the slag discharger shell through the first feed port, a second feed port is arranged at the lower end of the fixed pipe and the second feed port is connected to the second discharge port through a feed pipe, and a pneumatic butterfly valve is arranged in the feed pipe; a discharge port is arranged at the bottom of the higher end of the fixed pipe; a conveying auger is arranged in the fixed pipe and a conveying auger is arranged The delivery auger can rotate relative to the fixed pipe, and one end of the delivery auger extends out from one axial end of the fixed pipe and is transmission-connected to a first hydraulic motor fixedly connected to the end head of the fixed pipe; a support pipe is sleeved on the outer side of the middle part of the fixed pipe, the support pipe and the fixed pipe are coaxially arranged, and the two ends of the support pipe are sealedly connected to the outer side wall of the fixed pipe, a water filtering gap is provided on the side wall of the middle part of the fixed pipe, and the water filtering gap is located inside the support pipe; a drain outlet is provided at the bottom of the lower end of the support pipe, and a support flange is provided at the bottom end of the support pipe and is fixedly connected to the upper end face of the fixed plate through the support flange.

4. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 3, characterized in that: A coal guide plate is provided below the discharge port of the fixed pipe. The coal guide plate is arranged in an inclined shape and a higher end of the coal guide plate is rotatably connected to the fixed pipe.

5. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 4, characterized in that: A metering mechanism is provided under the coal guide plate; the metering mechanism includes a metering box body, which is provided with openings at the upper and lower ends, and guide slide rails are fixedly connected to both sides of the bottom end of the metering box body, and one end of the two guide slide rails in the length direction is fixedly connected to the fixed plate, and a movable plate is slidably connected between the two guide slide rails, and a hydraulic push rod is provided at the bottom end of the movable plate, one end of the hydraulic push rod is connected to the bottom end of the movable plate, and the other end of the hydraulic push rod is fixedly connected to the fixed plate, and the hydraulic push rod is connected to the hydraulic control pump pipeline provided on the coal-water-gas separation box.

6. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 5, characterized in that: The crawler walking mechanism includes a second hydraulic motor, a power wheel, and a driven wheel; the power wheel and the driven wheel are connected to the bottom end of the fixed plate through mounting parts, a crawler track is sleeved between the power wheel and the driven wheel, and the power wheel is transmission-connected to the second hydraulic motor arranged on the fixed plate.

7. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 6, characterized in that: The hydraulic control mechanism includes an explosion-proof motor, a hydraulic oil tank and two hydraulic oil pumps. The explosion-proof motor, the hydraulic oil tank and the two hydraulic oil pumps are all fixedly connected to a fixed plate. The explosion-proof motor is respectively connected to the two hydraulic oil pumps in a transmission manner. The two hydraulic oil pumps are both connected to the hydraulic oil tank pipelines. The two hydraulic oil pumps are respectively arranged corresponding to the first hydraulic motor and the second hydraulic motor, and the hydraulic oil pumps are respectively connected to the corresponding hydraulic motor pipelines.

8. The closed type slag discharge and coal-water-gas separation device for preventing gas outburst according to claim 6, characterized in that: The coal-water-gas separation box is provided with a pneumatic control switch, one end of the pneumatic control switch is connected to the gas source pipeline, and the other end of the pneumatic control switch is respectively connected to the pneumatic motor and the pneumatic butterfly valve.

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