CN211397657U

CN211397657U - Mining underground drainage device based on PLC

Info

Publication number: CN211397657U
Application number: CN201922296898.2U
Authority: CN
Inventors: 李鹏; 师永红; 卞全林; 张卫国
Original assignee: Huainan Jieti Electronic Technology Co ltd
Current assignee: Huainan Jieti Electronic Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-01
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a mining drainage device in pit based on PLC. Stay the large granule in adjusting part through one-way plate, two-way board, and then avoided impurity to get into the suction pump, the effectual suction pump that has protected has prolonged life. The crushing tool bit of cooperation first motor drive smashes large granule impurity, and the cooperation fan is discharged the impurity in the adjusting part from the drain, accomplishes whole blowdown process, need not to dismantle the pipeline, and easy operation is swift.

Description

Mining underground drainage device based on PLC

Technical Field

The utility model relates to a drainage system field, concretely relates to mining drainage device and control system in pit based on PLC.

Background

After coal mining, a water accumulation pool is easily formed in a left goaf, large-size particles such as coal slag and the like are contained in the goaf, a water suction pump is used for draining water when the goaf is drained, but the large-size particles flow into the water suction pump along with water flow during drainage, and further the water suction pump is damaged.

Publication No. CN 208280985U's patent document discloses a drainage device in coal mine collecting space area places the inside at the bearing through setting up the take-up plate to realize the rotation effect of take-up plate, avoided the tensile back of connecting rod because unable rotation makes the unable pegging graft of peg graft to the inside of spliced eye lead to the unable high-speed joint of two drain pipes, the top of cooperation sliding tray extends away and makes the sliding block pull out, realizes the rotation of take-up plate.

The solution to the above problem still needs to dismantle drainage pipe fast and cooperate the desanding equipment to use, and the operation is complicated, and efficiency is lower, dismantles the back to the pipeline, can't continue to carry out the drainage, influences drainage efficiency.

Patent document CN204974561U discloses an auxiliary dredging machine for coal mine. Should prevent stifled desilting device includes: the device comprises a driving part, an arc guide slideway, a vertical guide slideway, a stirring sand discharge pump, a high-pressure water jet device, an electric control system and a control valve group. The driving part is connected with the vertical guide slideway, the stirring sand discharging pump is arranged on the vertical guide slideway and can move up and down under the action of the jack, the vertical guide slideway is arranged on the arc guide slideway through the roller and can rotate around the arc guide slideway positively and negatively under the action of the driving part, so that the stirring sand discharging pump is driven to move up and down and circularly around the water absorption cage head to comprehensively clean sludge around the water absorption cage head; the high-pressure water jet device can wash and dilute the sludge so as to be convenient for pumping and draining; the electric control system and the control valve group are used for system control. The device has compact structure, can be used for a long time after being installed once, cleans the water suction halter on line, does not need manual dredging, reduces the labor amount and cost of workers, and is economical, safe and efficient.

Above-mentioned drainage adopts high pressure water jet device can break away silt and dilute the pump drainage of being convenient for, nevertheless to the unable quick crushing of mud stone of large granule, the flushing time is longer, and can't continue drainage work during the desilting.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a mining drainage device and control system in pit based on PLC, through the cooperation of one-way board and two-way board, the material can not flow from fan interface and drain, and the sealed and single passageway from a left side to the right side is constituted to the pipe that absorbs water, suction pump inlet tube, blowdown connecting piece, makes jumbo size granule be stayed adjusting part's inside. Can effectually avoid large granule debris to get into the suction pump in, guarantee the safe in utilization of suction pump. Through lining up two one-way boards with water inlet and delivery port respectively, two-way board aligns with the fan interface simultaneously, drives and smashes the high-speed rotation of tool bit, to the pump gas in the adjusting part, the pipe that absorbs water, suction pump inlet tube, blowdown connecting piece constitute from last to sealed and single passageway extremely down, and then make various debris flow from only export drain, whole blowdown process need not to dismantle the pipeline, and is efficient, and easy operation, single can easily accomplish.

The utility model discloses the technical problem who solves does:

A. how to avoid the large size impurity to get into the suction pump, the suction pump that leads to damages.

B. How convenient and fast accomplish the work of decontaminating, and can continue the drainage when decontaminating, reduce working strength.

The purpose of the utility model can be realized by the following technical scheme:

a mining underground drainage device based on PLC comprises a sewage discharge connecting piece with a self-cleaning function, an electronic valve, a flow velocity detection module, a water suction pump and a three-way pipe;

the number of the sewage discharge connecting pieces is two, and one end of each of the two sewage discharge connecting pieces is fixedly connected with one end of one electronic valve; the other ends of the two electronic valves are fixedly connected to two ends of the same three-way pipe, and the other end of the three-way pipe is inserted into the pool to be drained; two the other end fixed connection of blowdown connecting piece is at the both ends of another suction pump inlet tube, and the remaining one end of another suction pump inlet tube and the one end fixed connection of velocity of flow detection module, the other end and the suction pump of velocity of flow detection module are connected.

Furthermore, the sewage discharge connecting piece comprises a water inlet, a water outlet and an adjusting component, wherein the water outlet is symmetrically arranged with the water inlet, the adjusting component is in sliding connection with the inside of the sewage discharge connecting piece, the water inlet is fixedly connected with the electronic valve through a flange, and the water outlet is fixedly connected with a water inlet pipe of a water suction pump connected with the flow velocity detection module through a flange;

the top wall of the sewage connection piece is also provided with a fan interface and a sewage outlet which is symmetrically arranged with the fan interface, the fan interface is fixedly connected with an air outlet pipeline of the fan, a connecting line of the fan interface and the sewage outlet is vertically arranged with a connecting line of a water inlet and a water outlet, the inner cavity of the sewage connection piece is of a cylindrical structure, the inner side wall of the sewage connection piece is in sliding connection with an adjusting component matched with the inner cavity of the sewage connection piece, the center of the outer side wall of the adjusting component is fixedly connected with one end of a second rotating shaft, the other end of the second rotating shaft penetrates through the side wall of the sewage connection piece to reach the inside of a second motor cabin and is fixedly connected with a second motor output shaft arranged in the second motor cabin, and the second motor cabin;

the adjusting component is of a hollow structure, the side wall of the adjusting component is provided with four mounting holes distributed in a matrix, wherein one mounting hole close to the water inlet pipe of the water suction pump is fixedly connected with a bidirectional plate, the bidirectional plate is provided with uniformly distributed filter holes, two mounting holes close to the fan interface and the sewage outlet are fixedly connected with a one-way plate which only allows substances to flow into the regulating component, the unidirectional plate is provided with unidirectional through holes which are uniformly distributed, the side wall of the adjusting component far away from the second motor cabin is provided with jacks, a first rotating shaft is rotatably inserted in the jack, one end of the first rotating shaft is positioned in the adjusting component and is fixedly connected with a crushing cutter head, one end of the first rotating shaft penetrates through the side wall of the sewage discharge connecting piece to reach the inside of the first motor cabin, and with the output fixed connection of the first motor of installing in first motor storehouse, first motor storehouse fixed connection is at the lateral wall of blowdown connecting piece.

Further, one-way through-hole includes the air guide groove of seting up on one side of the one-way plate and the sliding tray adjacent and parallel with the air guide groove, sliding tray and air guide groove all with the same seal groove through connection of seting up at the one-way plate opposite side, the inner wall fixedly connected with seal lantern ring of sliding tray, seal lantern ring activity is pegged graft and is had the connecting rod, the one end fixedly connected with of connecting rod matches the piston piece of sliding tray, the other end fixedly connected with of connecting rod matches the closing plate of seal groove, the piston piece slides in the sliding tray, and the piston piece overlaps through the cover with the seal lantern ring and establish the spring coupling at the connecting rod, the closing plate slides at the seal groove.

Further, smash the tool bit and keep away from the terminal surface at center and seted up and accomodate the groove, accomodate the one end of the inner wall fixedly connected with electric putter in groove, electric putter's the other end runs through fixedly connected with erection column behind the connecting plate of accomodating inslot wall, the both ends of erection column are rotated the cover and are equipped with the rotating sleeve through clockwork spring connection, and two rotating sleeve's rotation opposite direction, rotating telescopic lateral wall fixedly connected with elasticity bar board, the lateral wall fixedly connected with brush hair of elasticity bar board.

Further, a sealing layer is laid on the side wall, in contact with the inner wall of the pollution discharge connecting piece, of the adjusting assembly.

The utility model has the advantages that:

(1) through will absorb water pipe, suction pump inlet tube, blowdown connecting piece, adjusting part, one-way board, two-way board stop at initial position, can stay the large granule in the adjusting part, and then avoided impurity to get into the suction pump, the effectual suction pump that has protected has prolonged life.

(2) Through the regulation of second motor to adjusting part, and then realize the position control of one-way board, two-way board, the crushing tool bit of cooperation first motor drive smashes large granule impurity, and the whole blowdown process is accomplished to impurity follow drain discharge in the adjusting part to the cooperation fan, need not to dismantle the pipeline, and easy operation is swift.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the internal structure of the connector for sewage disposal according to the present invention;

fig. 2 is a perspective view of the adjustment assembly of the present invention;

FIG. 3 is a left side view of the connector for waste water of the present invention;

FIG. 4 is a schematic structural view of a one-way through hole on the one-way plate of the present invention;

FIG. 5 is a schematic view of the inner structure of the crushing cutter head of the present invention;

fig. 6 is a system block diagram of the present invention.

In the figure: the device comprises an electronic valve 1, a water inlet pipe 2 of a water pump, a sewage discharge connecting piece 3, an adjusting component 4, a one-way plate 5, a two-way plate 6, a crushing cutter head 7, an electric push rod 701, a mounting column 702, a rotating sleeve 703, a connecting plate 704, an elastic strip-shaped plate 705, bristles 706, a first motor cabin 8, a second motor cabin 9, a fan exhaust pipe 10, an air guide groove 11, a sliding groove 12, a sealing groove 13, a sealing sleeve ring 14, a connecting rod 15, a piston block 16 and a sealing plate 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the present embodiment provides a PLC-based downhole drainage device for mining, including a blowdown connection member 3 having a self-cleaning function, an electronic valve 1, a flow rate detection module, a water pump, and a three-way pipe;

the number of the sewage discharging connecting pieces 3 is two, and one end of each of the two sewage discharging connecting pieces 3 is fixedly connected with one end of one electronic valve 1; the other ends of the two electronic valves 1 are fixedly connected to two ends of the same three-way pipe, and the other end of the three-way pipe is inserted into a pool to be drained; two the other end fixed connection of blowdown connecting piece 3 is at the both ends of another suction pump inlet tube 2, and the remaining one end of another suction pump inlet tube 2 and the one end fixed connection of velocity of flow detection module, the other end and the suction pump of velocity of flow detection module are connected.

After the water suction pump is started, the switching of the drainage passages can be realized by controlling the switches of the two electronic valves 1, so that when one passage is used for cleaning, the continuous operation of drainage can not be influenced, and the drainage efficiency is effectively improved.

The sewage discharge connecting piece 3 comprises a water inlet, a water outlet and an adjusting component 4, wherein the water outlet is symmetrically arranged with the water inlet, the adjusting component is connected with the inside in a sliding manner, the water inlet is fixedly connected with the electronic valve 1 through a flange, and the water outlet is fixedly connected with a water suction pump water inlet pipe 2 connected with the flow velocity detection module through a flange;

the top wall of the pollution discharge connecting piece 3 is also provided with a fan interface and a sewage discharge port which is symmetrically arranged with the fan interface, the fan interface is fixedly connected with an air outlet pipeline of the fan, a connecting line of the fan interface and the sewage discharge port is vertically arranged with a connecting line of a water inlet and a water outlet, the whole body is in a cross-shaped structure, the inner cavity of the pollution discharge connecting piece 3 is in a cylindrical structure, the inner side wall of the pollution discharge connecting piece 3 is in sliding connection with an adjusting component 4 matched with the inner cavity of the pollution discharge connecting piece 3, the center of the outer side wall of the adjusting component 4 is fixedly connected with one end of a second rotating shaft, the other end of the second rotating shaft penetrates through the side wall of the pollution discharge connecting piece 3 to reach the inside of a second motor cabin 9 and is fixedly connected with a second motor output shaft which is arranged in the second motor cabin 9, the second, the second motor bin 9 is fixedly connected to the outer side wall of the pollution discharge connecting piece 3; the second motor adopts the step motor by PLC control to realize accurate angle and rotate. The pollution discharge connecting piece 3 and the adjusting component 4 can be made of transparent materials, and the internal condition can be observed conveniently.

Adjusting part 4 is hollow structure, and four mounting holes that are matrix distribution are seted up to adjusting part 4's lateral wall, and adjusting part 4 removes the mounting hole place lateral wall, and other lateral walls all contact with the inner wall of blowdown connecting piece 3, the sealing layer has been laid with the lateral wall of the inner wall contact of blowdown connecting piece 3 to adjusting part 4, guarantees in the material can not get into the clearance of blowdown connecting piece 3 and adjusting part 4. Wherein a mounting hole close to the water inlet pipe 2 of the water pump is fixedly connected with a bidirectional plate 6, the bidirectional plate 6 is provided with uniformly distributed filter holes, namely, materials can pass through in two directions, such as a metal mesh plate, two mounting holes close to a fan interface and a sewage discharge outlet are both fixedly connected with one-way plates 5 only allowing the materials to flow into the adjusting component 4, the one-way plates 5 are provided with uniformly distributed one-way through holes, the two one-way plates 5 are arranged in a mirror image manner, the side wall of the adjusting component 4 far away from the second motor bin 9 is provided with a jack, the jack is rotatably inserted with a first rotating shaft, one end of the first rotating shaft is positioned inside the adjusting component 4 and is fixedly connected with a crushing cutter head 7, and one end of the first rotating shaft penetrates through the side wall of the sewage discharge connecting piece 3 to reach the inside of the first motor bin 8 and is fixedly connected with the output end of, first pivot and jack, 3 lateral walls of blowdown connecting piece all seal up the setting, also laid the sealing layer if the lateral wall of first pivot, 8 fixed connection in the lateral wall of blowdown connecting piece 3 in first motor storehouse. The first motor adopts a motor with adjustable rotating speed, so that the crushing cutter head 7 can rotate at two high and low speeds.

The one-way through hole includes the air guide groove 11 of seting up in one side of one-way plate 5 and the sliding tray 12 adjacent and parallel with air guide groove 11, sliding tray 12 and air guide groove 11 all with the same seal groove 13 through connection of seting up at 5 opposite sides of one-way plate, the inner wall fixedly connected with seal ring 14 of sliding tray 12, the activity of seal ring 14 is pegged graft and is had connecting rod 15, the one end fixedly connected with of connecting rod 15 matches piston block 16 of sliding tray 12, the other end fixedly connected with of connecting rod 15 matches the closing plate 17 of seal groove 13, piston block 16 slides in sliding tray 12, and piston block 16 and seal ring 14 establish the spring coupling at connecting rod 15 through the cover for make piston block 16 keep away from with seal ring 14 mutually, closing plate 17 slides at seal groove 13. The sliding groove 12 and the air guide groove 11 are arranged on one side close to the outer part of the adjusting component 4, and the sealing groove 13 is arranged on one side close to the inner part of the adjusting component 4; under the pushing of the pressure from the outside of the adjusting component 4, the sealing plate 17 and the piston block 16 in the area of the air guide groove 11 are moved under the action of the pressure, so that the sealing plate 17 is separated from the sealing groove 13, and the passing of the substance is realized.

The terminal surface that crushing tool bit 7 kept away from the center has been seted up and has been accomodate the groove, accomodate the one end of the inner wall fixedly connected with electric putter 701 in groove, electric putter 701's the other end runs through fixedly connected with erection column 702 behind the connecting plate 704 of accomodating inslot wall, the both ends of erection column 702 are rotated the cover and are equipped with the rotating sleeve 703 through clockwork spring coupling, and two rotating sleeve 703's rotation opposite direction, the flexible bar board 705 of lateral wall fixedly connected with of rotating sleeve 703, the lateral wall fixedly connected with brush hair 706 of elasticity bar board 705.

The specific working process of this embodiment is as follows:

1) during drainage, the water suction pump is started, the positions of the one-way plate 5 and the two-way plate 6 are shown in fig. 1, water flows sequentially through the electronic valve 1, the adjusting component 4 and the water suction pump water inlet pipe 2 close to the water suction pump, large-size particles are intercepted by the two-way plate 6, due to the effect of the one-way plate, the substances cannot flow out of the fan interface and the sewage discharge port, the water suction pipe 1, the water suction pump water inlet pipe 2 and the sewage discharge connecting piece 3 form a sealed and single passage from left to right, and the large-size particles are left inside the adjusting component 4. Can effectually avoid large granule debris to get into the suction pump in, guarantee the safe in utilization of suction pump.

2) When sundries in the adjusting assembly 4 are more, the water suction pump is stopped, the second motor is controlled to rotate 90 degrees anticlockwise, the two one-way plates 5 are aligned with the water inlet and the water outlet respectively, meanwhile, the two-way plate 6 is aligned with the fan interface, the first motor is started at the moment, the crushing cutter head 7 is driven to rotate at a high speed, large-size particles in the adjusting assembly 4 are crushed to be smaller than the size of a sewage discharge outlet, the fan is started again, air is pumped into the adjusting assembly 4, the water suction pipe 1, the water suction pump water inlet pipe 2 and the sewage discharge connecting piece 3 form a sealed and single passage from top to bottom, then various sundries flow out from the unique outlet sewage discharge outlet, and after the sewage discharge is finished, the one-way plate 5 and the two-way plate 6 are restored to. The whole sewage discharge process does not need to dismantle a pipeline, the efficiency is high, the operation is simple, and the operation can be easily finished by a single person.

3) Electric putter 701 extends, and with erection column 702 and elastic strip shaped plate 705 release the groove of accomodating, two rotating sleeve 703 this moment rotate to opposite direction under clockwork spring's effect, make brush hair 706 contradict with the inner wall of adjusting part 4, when smashing tool bit 7 low-speed rotation, can scrub unidirectional plate 5 and two-way board 6, avoid the granule to adhere to on its surface, lead to the velocity of flow to reduce. When needs realize shredding function, only need to withdraw electric putter 701, elasticity bar plate 705 receives the restraint of containing groove port, overcomes clockwork spring's elasticity and accomodates the inslot with the whole income of elasticity bar plate 705, smashes the high-speed rotation of tool bit 7 this moment, realizes smashing big granule.

As shown in fig. 6, a mining underground drainage control system based on PLC includes a PLC control module, and the system further includes two sewage connectors 3 with self-cleaning function, two electronic valves 1 for switching water flow direction, a flow rate detection module and a water pump, all of which are in communication connection with the PLC control module;

the pollution discharge connecting piece 3 comprises a first motor for driving the crushing cutter head 7, a second motor for realizing function switching, a blower for pressurizing and an electric push rod 701 for pushing the elastic strip-shaped plate 705.

The control steps of the system are as follows:

s1, opening any one electronic valve 1 by the PLC control module, and starting the flow rate detection module and the water pump;

s2, when the flow rate detection module detects that the flow rate is smaller than a threshold value a, the flow rate is reduced, which indicates that the through hole of the bidirectional plate 6 is blocked, the bidirectional plate 6 can be firstly scrubbed by using the bristles 706, the water flow path does not need to be switched, at the moment, the PLC control module controls the electric push rod 701 in the pollution discharge connecting piece 3 to extend, the elastic strip-shaped plate 705 is pushed out of the accommodating groove of the pollution discharge connecting piece 3, the bristles 706 are enabled to be abutted against the inner side wall of the adjusting component 4, and the first motor is started to drive the crushing cutter head 7 to rotate at a rotating speed V1;

s3, when the flow velocity detection module detects that the flow velocity is smaller than a threshold value b and b is smaller than a, the problem that the flow velocity is too small cannot be solved by using the bristles 706, and more thorough dirt cleaning work needs to be carried out, at the moment, the PLC control module controls to close the electronic valve 1 corresponding to the channel, the electric push rod 701 in the dirt discharge connecting piece 3 is recovered, the elastic strip-shaped plate 705 is collected into the collecting groove, and the second motor is started to align the two-way plate 6 in the adjusting component 4 with the fan interface; then the first motor is started to rotate at a rotating speed of V2, and V2 is greater than V1, so that the crushing cutter head 7 is driven to rotate; after a fixed time, crushing the large particles into small particles, and then matching with a starting fan to pressurize the inside of the adjusting component 4; the impurities are extruded out of the sewage outlet.

And S4, executing S3, and controlling the electronic valve of the other passage to be opened by the PLC control module. When the cleaning operation is performed, the water flow path cannot be operated, and therefore, it is necessary to switch to another water flow path to continue the drainage operation.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. A PLC-based underground mining drainage device is characterized by comprising a sewage discharge connecting piece (3) with a self-cleaning function, an electronic valve (1), a flow velocity detection module, a water suction pump and a three-way pipe;

the number of the sewage discharging connecting pieces (3) is two, and one end of each of the two sewage discharging connecting pieces (3) is fixedly connected with one end of one electronic valve (1); the other ends of the two electronic valves (1) are fixedly connected to the two ends of the same three-way pipe, and the other end of the three-way pipe is inserted into a pool to be drained; two the other end fixed connection of blowdown connecting piece (3) is at the both ends of another suction pump inlet tube (2), and the remaining one end of another suction pump inlet tube (2) and the one end fixed connection of velocity of flow detection module, the other end and the suction pump of velocity of flow detection module are connected.

2. The PLC-based mining underground drainage device according to claim 1, wherein the pollution discharge connecting piece (3) comprises a water inlet, a water outlet and an adjusting component (4), wherein the water outlet is symmetrically arranged with the water inlet, the adjusting component is slidably connected inside the adjusting component, the water inlet is fixedly connected with the electronic valve (1) through a flange, and the water outlet is fixedly connected with a water inlet pipe (2) of a water suction pump connected with the flow rate detection module through a flange;

the top wall of the pollution discharge connecting piece (3) is also provided with a fan interface and a pollution discharge port which is symmetrically arranged with the fan interface, the fan interface is fixedly connected with an air outlet pipeline of the fan, and the connecting line of the fan interface and the sewage draining exit is vertical to the connecting line of the water inlet and the water outlet, the inner cavity of the sewage draining connecting piece (3) is of a cylindrical structure, the inner side wall of the sewage draining connecting piece (3) is connected with an adjusting component (4) matched with the inner cavity of the sewage draining connecting piece (3) in a sliding way, the center of the outer side wall of the adjusting component (4) is fixedly connected with one end of a second rotating shaft, the other end of the second rotating shaft penetrates through the side wall of the sewage discharging connecting piece (3) to reach the inside of a second motor cabin (9), the second motor bin (9) is fixedly connected with a second motor output shaft arranged in the second motor bin (9), and the second motor bin (9) is fixedly connected with the outer side wall of the pollution discharge connecting piece (3);

the adjusting component (4) is of a hollow structure, four mounting holes which are distributed in a matrix manner are formed in the side wall of the adjusting component (4), wherein one mounting hole which is close to a water inlet pipe (2) of a water suction pump is fixedly connected with a two-way plate (6), uniformly distributed filter holes are formed in the two-way plate (6), two mounting holes which are close to a fan connector and a sewage discharge outlet are fixedly connected with a one-way plate (5) which only allows substances to flow into the inside of the adjusting component (4), uniformly distributed one-way through holes are formed in the one-way plate (5), a jack is formed in the side wall, far away from a second motor bin (9), of the adjusting component (4), the jack is rotatably inserted with a first rotating shaft, one end of the first rotating shaft is located in the adjusting component (4) and is fixedly connected with a crushing cutter head (7), and one end of the first rotating shaft penetrates through the side wall of the sewage discharge connecting piece (, and with the output fixed connection of the first motor of installing in first motor storehouse (8), first motor storehouse (8) fixed connection is at the lateral wall of blowdown connecting piece (3).

3. The PLC-based mine underground drainage device is characterized in that the one-way through hole comprises an air guide groove (11) formed in one side of a one-way plate (5) and a sliding groove (12) adjacent to and parallel to the air guide groove (11), the sliding groove (12) and the air guide groove (11) are communicated with a sealing groove (13) formed in the other side of the one-way plate (5), a sealing sleeve ring (14) is fixedly connected to the inner wall of the sliding groove (12), a connecting rod (15) is movably inserted into the sealing sleeve ring (14), one end of the connecting rod (15) is fixedly connected with a piston block (16) matched with the sliding groove (12), the other end of the connecting rod (15) is fixedly connected with a sealing plate (17) matched with the sealing groove (13), the piston block (16) slides in the sliding groove (12), and the piston block (16) is connected with the sealing sleeve ring (14) through a spring sleeved on the connecting rod (15), the sealing plate (17) slides in the sealing groove (13).

4. The PLC-based mining underground drainage device according to claim 2, wherein a containing groove is formed in the end face, far away from the center, of the crushing cutter head (7), one end of an electric push rod (701) is fixedly connected to the inner wall of the containing groove, the other end of the electric push rod (701) penetrates through a connecting plate (704) fixedly connected to the inner wall of the containing groove and is fixedly connected with an installation column (702), rotating sleeves (703) connected through a clockwork spring are rotatably sleeved at two end portions of the installation column (702), the rotating directions of the two rotating sleeves (703) are opposite, an elastic strip plate (705) is fixedly connected to the outer side wall of each rotating sleeve (703), and bristles (706) are fixedly connected to the outer side wall of each elastic strip plate (705).

5. The PLC-based mining downhole drainage device according to claim 2, characterized in that the side wall of the adjusting assembly (4) in contact with the inner wall of the sewage connection (3) is provided with a sealing layer.