CN114593113B

CN114593113B - Centralized remote liquid supply system for coal mine

Info

Publication number: CN114593113B
Application number: CN202210229471.4A
Authority: CN
Inventors: 付希波; 宋强; 李光林; 宋方琛
Original assignee: Qingdao Haode Boer Industrial Co ltd
Current assignee: Qingdao Haode Boer Industrial Co ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-11-15
Anticipated expiration: 2042-03-09
Also published as: CN114593113A

Abstract

The invention discloses a centralized remote liquid supply system for a coal mine, which comprises a hollow main body and an oil tank, wherein the main body is fixedly connected with the upper surface of the oil tank, and a pressure detection mechanism is arranged in the main body and the oil tank; the pressure detection mechanism comprises a driving motor fixedly connected with the upper surface of the main body, an output shaft of the driving motor is connected with the main body in a penetrating and rotating mode through a bearing, the main body is connected with a rotating shaft in a penetrating and rotating mode together with the oil tank, one end, located in the main body, of the output shaft of the driving motor is fixedly connected with a rotating block at one end, located in the main body, of the rotating shaft, and a pump liquid tank is formed in the main body. Has the advantages that: the liquid supply system can automatically monitor the liquid supply pressure in real time, find leakage in time, avoid the need of manual regular inspection in the prior art, greatly reduce the labor intensity, improve the safety, purify the emulsion in the oil tank twice, monitor the amount of the emulsion and prompt oiling in time.

Description

Centralized remote liquid supply system for coal mine

Technical Field

The invention relates to the technical field of coal liquid supply systems, in particular to a centralized remote liquid supply system for a coal mine.

Background

The remote liquid supply technology is a new technology for equipment configuration of a domestic coal fully-mechanized mining working face at present, and is characterized in that an emulsion pump station and a spray pump station are separated from a mining working face mobile electronic train and are fixedly arranged outside a crossheading deviation of the working face, emulsion and high-pressure spray are conveyed to the mining working face through an extra-high voltage pipeline system, meanwhile, the pressure at the tail end of a support hydraulic system, the spray inside and outside a coal mining machine and the spray of the support meet regulation specifications, and remote liquid supply is adopted, so that the cost and the investment are saved, the production safety coefficient is improved, the problems of difficult train arrangement and complex operation under the condition of large gradient are solved, the safety risks of dumping, rope breakage, car running, personnel crushing and the like in the pulling and moving process of the equipment train are reduced, and the development trend of the remote liquid supply is also developed from one station to multiple stations in one station.

Among the prior art, current remote liquid supply system is supplying the liquid in-process, rear end pipeline pressure measurement still adopts artifical plan to patrol and examine, pressure measurement still leans on ordinary mechanical manometer to detect, the condition discovery of unable timely discovery loss of pressure, thereby lead to the unable assurance of the inside safety of colliery, and simultaneously, the emulsion is in the use, can adulterate the piece that the metal friction produced, untimely clearance can lead to the emulsion rotten, and current remote liquid supply system needs the artificial oil mass of observing, unable automatic suggestion, it is inconvenient to use.

Disclosure of Invention

The invention aims to solve the problems that pressure loss cannot be found in time, chippings cannot be cleaned in time, oil quantity cannot be automatically prompted and the like in the prior art, and provides a centralized remote liquid supply system for a coal mine.

In order to achieve the purpose, the invention adopts the following technical scheme:

the centralized remote liquid supply system for the coal mine comprises a hollow main body and an oil tank, wherein the main body is fixedly connected with the upper surface of the oil tank, and a pressure detection mechanism is arranged in the main body and the oil tank;

the pressure detection mechanism comprises a driving motor fixedly connected with the upper surface of a main body, an output shaft of the driving motor is connected with the main body in a penetrating and rotating mode through a bearing, the main body and an oil tank are connected with a rotating shaft in a penetrating and rotating mode jointly, one end of the output shaft of the driving motor is located in the main body and one end of the rotating shaft is located in the main body and is fixedly connected with a rotating block, a pump liquid tank is arranged in the main body, a piston is connected in the pump liquid tank in a sealing and sliding mode and is connected with a connecting rod in a rotating mode jointly through a pin shaft, one end, far away from the rotating block, of the connecting rod is connected with the side wall of the piston in a rotating mode through a pin shaft, a first force sensing resistor is embedded in the side wall, far away from one side of the connecting rod, of the piston, of the main body, a sensing cavity is formed in the main body, a first conductive block and a second conductive block are connected in a sliding mode, a first permanent magnet is fixedly connected with the side wall of the second conductive block, a first spring is fixedly connected between the first conductive block and the inner side wall of the sensing cavity, one section of the rotating shaft is located in the oil tank and is fixedly connected with a third conductive block, one inner side wall of the swirl rod is connected with a second permanent magnet, and the alarm lamp body.

Further, the main part runs through fixedly connected with pipette jointly with the oil tank, the main part lateral wall runs through fixedly connected with feed pipe, the oil tank roof runs through fixedly connected with and returns the liquid pipe, the pipette will pump cistern and the inside intercommunication of oil tank, all be provided with the check valve in pipette and the feed pipe.

Furthermore, two guide grooves are formed in the inner side wall of the sensing cavity, guide rods are connected in the guide grooves in a sliding mode, the guide rods are fixedly connected with the side wall of the second conducting block, and a second spring is fixedly connected between the guide rods and the inner side wall of the guide grooves.

Further, be provided with secondary purification mechanism in the oil tank, secondary purification mechanism includes two hollow fixed blocks, the lateral wall that the fixed block is close to oil tank one side runs through a plurality of function pipes of fixedly connected with, back flow, function pipe and back flow all with the oil tank lateral wall runs through fixed connection, the function chamber has all been seted up in two lateral walls of oil tank symmetry, the oil tank lateral wall runs through the fixedly connected with connecting pipe jointly with the function pipe, the function chamber and the function pipe intercommunication that the connecting pipe will correspond, the sealed sliding connection of function intracavity has the magnetic sheet, function intracavity diapire fixedly connected with second electro-magnet.

Further, the lateral wall that the oil tank one side was kept away from to the fixed block runs through sealed sliding connection and has the installation piece, the lateral wall fixedly connected with filter screen of installation piece one side in being located the fixed block.

Further, be provided with oil mass suggestion mechanism in the oil tank, oil mass suggestion mechanism is including seting up the spacing groove at function intracavity lateral wall, spacing inslot sealing sliding connection has the third conducting block, the third conducting block with correspond magnetic sheet fixed connection, a plurality of third springs of fixedly connected with between third conducting block and the spacing inslot wall, one of them spacing inslot diapire fixedly connected with fourth conducting block, fixed surface is connected with the second alarm lamp on the main part.

Furthermore, one section of the rotating shaft, which is positioned in the oil tank, is provided with three sliding grooves, sliding blocks are connected in the sliding grooves in a sliding mode, the sliding blocks are fixedly connected with the corresponding swirl vanes, and the inner side wall of one sliding groove is provided with a second force sensitive resistor.

Furthermore, both ends of the function pipe are provided with one-way valves, and a pressure release valve is arranged in the return pipe.

The invention has the following advantages:

1. in the liquid supply process, the piston is driven to reciprocate through the driving motor, the rotating block and the connecting rod to supply liquid, and meanwhile, the rotating shaft drives the rotational flow blades to rotate, so that the conductive rod cuts the magnetic induction lines of the second permanent magnet to generate current to be supplied to the first electromagnet, so that the first electromagnet generates magnetic repulsion to the first permanent magnet, the pressure borne by the end face of the piston is gradually increased along with liquid supply each time, so that the resistance value of the first force-sensitive resistor is reduced, the first conductive block is contacted with the second conductive block each time, when pressure loss exists, the first conductive block cannot be contacted with the second conductive block for a long time, and the first alarm lamp is turned on at the moment, so that a worker can find the pressure loss in a pipeline in time, timely troubleshooting is carried out, and the safety in a mine is ensured;

2. the emulsion in the oil tank generates rotational flow through the rotation of the rotational flow blade, so that metal debris in the emulsion is subjected to centrifugal force during rotational flow, moves towards two sides of the oil tank and is close to the second permanent magnet, and the metal debris are adsorbed through the magnetic force of the second permanent magnet, so that the purity of the emulsion is ensured, and deterioration is avoided;

3. after primary purification is carried out by the second permanent magnet, larger metal debris possibly cannot be well adsorbed, the emulsion descends along with the emulsion during liquid pumping, the emulsion descends to the functional pipe, the magnetic plate reciprocates up and down through electric energy generated by the conductive rod, the emulsion in the oil tank is continuously pumped into the fixed block, the emulsion is filtered by the filter screen and then pumped back to the oil tank for secondary purification, and the purity degree of the emulsion is further improved;

4. the whirl leaf is at the rotation in-process, if the oil mass is sufficient, the resistance that receives when it rotates is the biggest, and when the emulsion liquid measure is not enough, whirl leaf some is in the emulsion promptly, when partly is not in the emulsion, the resistance that receives this moment reduces, thereby make second force sensing resistor resistance reduce, the magnetic force of second electro-magnet makes magnetic sheet reciprocating motion this moment, the motion degree makes third conducting block and fourth conducting block contact, thereby make the second alarm lamp light, suggestion emulsion liquid measure is not enough, thereby in time supply the emulsion.

Drawings

FIG. 1 is a schematic structural diagram of a centralized remote liquid supply system for a coal mine according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

FIG. 5 is an enlarged view at E in FIG. 4;

FIG. 6 is a cross-sectional view taken at D-D of FIG. 1;

FIG. 7 is a schematic circuit diagram of a centralized remote liquid supply system for coal mines according to the present invention.

In the figure: the device comprises a main body 1, an oil tank 2, a driving motor 4, a rotating shaft 5, a rotating block 6, a connecting rod 7, a pump liquid tank 8, a piston 9, a first force-sensitive resistor 10, a sensing cavity 11, a first conducting block 12, a first spring 13, a second conducting block 14, a first permanent magnet 15, a guide groove 16, a guide rod 17, a second spring 18, a first electromagnet 19, a swirl vane 20, a conducting rod 21, a second permanent magnet 22, a first alarm lamp 23, a liquid supply pipe 24, a liquid suction pipe 25, a liquid return pipe 26, a functional pipe 27, a liquid return pipe 28, a fixed block 29, a functional cavity 30, a connecting pipe 31, a magnetic plate 32, a second electromagnet 33, a mounting block 34, a filter screen 35, a pressure relief valve 36, a limiting groove 37, a third conducting block 38, a third spring 39, a fourth spring 40, a second alarm lamp 41, a sliding groove 42, a sliding block 43 and a second force-sensitive resistor 44.

Detailed Description

Referring to fig. 1-7, the centralized remote liquid supply system for the coal mine comprises a hollow main body 1 and an oil tank 2, wherein the main body 1 is fixedly connected with the upper surface of the oil tank 2, and pressure detection mechanisms are arranged in the main body 1 and the oil tank 2;

the pressure detection mechanism comprises a driving motor 4 fixedly connected with the upper surface of a main body 1, an output shaft of the driving motor 4 is in through rotation connection with the main body through a bearing, the main body 1 and an oil tank 2 are in through rotation connection with a rotating shaft 5 together, one end of the output shaft of the driving motor 4, which is positioned in the main body 1, and one end of the rotating shaft 5, which is positioned in the main body 1, are both fixedly connected with rotating blocks 6, a pump liquid tank 8 is arranged in the main body 1, a piston 9 is in sealing sliding connection with the inside of the pump liquid tank 8, the two rotating blocks 6 are in rotation connection with a connecting rod 7 through a pin shaft, one end of the connecting rod 7, which is far away from the rotating blocks 6, is in rotation connection with the side wall of the piston 9 through the pin shaft, the driving motor 4 drives the two rotating blocks 6 to rotate, so that the connecting rod 7 drives the piston 9 to reciprocate continuously to pump emulsion from the oil tank 2 into the pump liquid tank 8 and then into a liquid supply pipe 24, the emulsion is supplied, a first force-sensitive resistor 10 is embedded in the side wall of the piston 9 far from the connecting rod 7, the resistance value of the first force-sensitive resistor 10 is reduced along with the increase of the pressure on the surface of the first force-sensitive resistor 10, a sensing cavity 11 is formed in the main body 1, a first conductive block 12 and a second conductive block 14 are slidably connected in the sensing cavity 11, a damping pad is arranged on the side wall of the first conductive block 12, so that the first conductive block 12 is in damping sliding connection with the inner side wall of the sensing cavity 11, so that the first conductive block slowly slides back under the elasticity of a first spring 13, a first permanent magnet 15 is fixedly connected to the side wall of the second conductive block 14 far from the first conductive block 12, a first electromagnet 19 is fixedly connected to the inner side wall of the sensing cavity 11, a first spring 13 is fixedly connected between the first conductive block 12 and the inner side wall of the sensing cavity 11, and three swirl vanes 20 are slidably connected to one section of the rotating shaft 5 which is positioned in the oil tank 2, one of the swirl vanes 20 is internally provided with a conductive rod 21, the circuit connection is as shown in figure 7, the second force sensitive resistor 44 is electrically connected with the second electromagnet 33, the first force sensitive resistor 10 and the first electromagnet 19 are connected with a diode and then connected with the second force sensitive resistor 44 and the second electromagnet 33 in parallel, and then connected with two ends of the conductive rod 21, because the conductive rod 21 cuts a magnetic induction line of the second permanent magnet 22 in the rotation process to generate alternating induction current, meanwhile, each movement direction corresponds to one current direction in the reciprocating motion process of the piston, the arrangement of the diode ensures that the current can pass through the diode so as to electrify the first electromagnet 19 and generate magnetic repulsion to the first permanent magnet 15 when emulsion is supplied in the reciprocating motion process of the piston 9 in the right direction, and the current can not pass when the emulsion is pumped in the left direction motion process of the piston 9, the first electromagnet 19 is not electrified, two opposite inner side walls of the oil tank 2 are fixedly connected with second permanent magnets 22, the two second permanent magnets 22 are arranged to enable magnetic induction lines to point to the other second permanent magnet 22 in parallel, the upper surface of the main body 1 is fixedly connected with a first alarm lamp 23, the first conducting block 12 and the second conducting block 14 are connected with a sensor, the sensor is connected with the first alarm lamp 23, the sensor cannot detect current after a period of time, namely the first alarm lamp 23 is lightened, the sensor is the prior art and is not described herein any more, in the process of pumping liquid, the piston 9 is driven to reciprocate through the driving motor 4, the rotating block 6 and the connecting rod 7 to supply liquid, meanwhile, the rotating shaft 5 drives the cyclone blades 20 to rotate, so that the conducting rod 21 cuts the magnetic induction lines of the second permanent magnets 22 to generate current and supply the current to the first electromagnet 19, therefore, the first electromagnet generates magnetic repulsion to the first permanent magnet 15, at the same time, the first permanent magnet 15 causes the second conductive block 14 to slide out under the action of the magnetic repulsion, and simultaneously drives the first conductive block 12 to slide out, the hydraulic pumping force is gradually increased along with the progress of the liquid pumping process, so that the resistance value of the first force sensitive resistor 10 is continuously reduced, thereby the magnetic repulsion borne by the first permanent magnet 15 is continuously increased, the movement distance of the first conductive block is continuously increased, the first conductive block 12 slowly slides back due to the damping effect, so that the second conductive block 14 always contacts with the first conductive block 12 during each movement, when the pressure is lost, the hydraulic pumping force of the piston 9 is gradually reduced, thereby the movement distance of the second conductive block 14 is continuously reduced, the first conductive block 12 cannot contact, the second conductive block 14 cannot contact with the first conductive block 12 due to the slow sliding back of the first conductive block 12, the second conductive block 14 cannot contact with the first conductive block 12 for a long time, the first alarm lamp 23 is turned on, the pressure loss exists, the staff needs to prompt the maintenance, and the manual inspection of the existing safety inspection system is greatly improved;

it is worth mentioning that pivot 5 is at the rotation in-process for when whirl leaf 20 rotates, make the emulsion in the oil tank 2 produce the whirl, thereby make the metal piece in the emulsion under the whirl of emulsion, receive certain centrifugal force, be close to second permanent magnet 22, thereby through the magnetic force of second permanent magnet 22, carry out certain absorption to the metal piece, thereby carry out the first time purification to the emulsion, clear the piece in the emulsion, avoid the emulsion rotten.

The main part 1 runs through fixedly connected with pipette 25 jointly with

oil tank

2, 1 lateral wall of main part runs through fixedly connected with

feed pipe

24, 2 roof of oil tank runs through fixedly connected with and returns liquid pipe 26, pipette 25 is with

pump liquid groove

8 and 2 inside intercommunications of oil tank, all be provided with the check valve in pipette 25 and the feed pipe 24, the check valve in the pipette 25 only allows the emulsion to get into in the pump liquid groove 8 by oil tank 2, the check valve in the feed pipe 24 only allows the emulsion to get into in the feed pipe 24 by pump liquid groove 8, thereby make in piston 9 reciprocating motion can constantly be with the oil pump income feed pipe 24 in the oil tank 2.

Two guide grooves 16 have been seted up to perception chamber 11 inside wall, and sliding connection has guide bar 17 in guide groove 16, and guide bar 17 common and second conducting block 14 lateral wall fixed connection, fixedly connected with second spring 18 between guide bar 17 and the guide groove 16 inside wall for second conducting block 14 is steady slip under magnetic force through the setting of guide bar 17 and guide groove 16.

A secondary purification mechanism is arranged in the oil tank 2, the secondary purification mechanism comprises two hollow fixed blocks 29, the side wall of one side, close to the oil tank 2, of each fixed block 29 is fixedly connected with a plurality of functional tubes 27 and a return tube 28 in a penetrating manner, the functional tubes 27 and the return tube 28 are fixedly connected with the side wall of the oil tank 2, two symmetrical side walls of the oil tank 2 are respectively provided with a functional cavity 30, the side wall of the oil tank 2 and the functional tubes 27 jointly penetrate and are fixedly connected with a connecting tube 31, the corresponding functional cavities 30 are communicated with the functional tubes 27 through the connecting tube 31, a magnetic plate 32 is connected in the functional cavities 30 in a sealing and sliding manner, the bottom wall of the functional cavities 30 is fixedly connected with a second electromagnet 33, along with the rotation of the conductive rod 21, magnetic induction lines of a second permanent magnet 22 are continuously cut, the conductive rod 21 generates alternating induction current, the second electromagnet 33 generates alternating magnetic force, the magnetic attraction force and the magnetic repulsion force are continuously and alternately generated on the magnetic plate 32, so that the magnetic plate 32 reciprocates up and down, emulsion in the functional cavities 30 is sucked into the functional cavities 30 through the functional tubes 27 and then pumped into the return tubes 29, filtering is performed through a filter screen 35, larger metal debris, the filtered in the oil tank, the filtered emulsion in the oil tank 2, and further purified emulsion is ensured to flow back into the return tube 2;

it is worth mentioning that the emulsion is returned by the top of the oil tank 2 and is pumped out from the bottom, so that the used emulsion moves from top to bottom and can be pumped out after primary purification and secondary purification, thereby ensuring the purity of the emulsion to a greater extent, avoiding deterioration and avoiding the deterioration of the hydraulic effect.

The lateral wall that oil tank 2 one side was kept away from to fixed block 29 runs through sealed sliding connection and has installation piece 34, and installation piece 34 is located the lateral wall fixedly connected with filter screen 35 of one side in the fixed block 29, through the setting of fixed block 29 for filter screen 35 can be dismantled out at any time and clean, guarantees that filter screen 35 can not block up.

Be provided with oil mass suggestion mechanism in the oil tank 2, oil mass suggestion mechanism is including seting up the spacing groove 37 at the function chamber 30 inside wall, sealing sliding connection has third conducting block 38 in the spacing groove 37, third conducting block 38 and the magnetic sheet 32 fixed connection who corresponds, a plurality of third springs 39 of fixedly connected with between third conducting block 38 and the spacing groove 37 inner wall, bottom wall fixedly connected with fourth conducting block 40 in one of them spacing groove 37, fixed surface is connected with second alarm lamp 41 on the main part 1, third conducting block 38, fourth conducting block 40 and second alarm lamp 41 pass through the wire electricity and connect, whirl leaf 20 is in the rotation process, if the oil mass is sufficient, promptly 20 whole submergence of whirl leaf is in the emulsion, the resistance that whirl leaf 20 rotated this moment is certain, and when the oil mass is insufficient, when whirl leaf 20 only has the part to be located the emulsion, the resistance that whirl leaf 20 received this moment reduces, thereby make the pressure that second force resistance 44 receives reduce, thereby make the magnetic force increase of second magnetic sheet 33, this moment, thereby the oil mass length of oil mass 32 increases, thereby make the third conducting block 38 and the contact clearance of fourth conducting block 41 in time of the contact of second electromagnet can be in time for the intermittent type electromagnet to make the contact of the warning lamp 41, thereby the intermittent type electromagnet can be enough electromagnet in-by the time, thereby the interval of the interval work of the people's contact.

Three sliding grooves 42 are formed in one section, located in the oil tank 2, of the rotating shaft 5, sliding blocks 43 are connected in the sliding grooves 42 in a sliding mode, the sliding blocks 43 are fixedly connected with the corresponding swirl vanes 20, second force sensitive resistors 44 are arranged on the inner side wall of one sliding groove 42, and the resistance value of each second force sensitive resistor 44 is reduced along with the reduction of the pressure applied to the second force sensitive resistor 44.

Both ends of the function pipe 27 are provided with a check valve, a pressure relief valve 36 is arranged in the return pipe 28, the check valve of the function pipe 27 close to the oil tank 2 only allows emulsified oil to enter the function pipe 27 from the oil tank 2, the check valve of the other end only allows emulsified liquid to enter the fixing block 29 from the function pipe 27, thereby the emulsified liquid in the oil tank 2 can be continuously pumped into the fixing block 29 by the up-and-down reciprocating motion of the magnetic plate 32, the pressure relief valve 36 is opened after the pressure reaches a certain value, thereby only when pumping liquid in the fixing block 29, the pressure relief valve 36 is opened, thereby the emulsified liquid in the oil tank 2 is prevented from flowing back to the fixing block 29 through the return pipe 28.

In the invention, when liquid is pumped, the driving motor 4 is started, the driving motor 4 drives the two rotating blocks 6 to rotate and simultaneously drives the rotating shaft 5 to rotate, the piston 9 continuously reciprocates through the connecting rod 7 by the rotation of the rotating blocks 6, and simultaneously the rotating shaft 5 rotates to drive the swirl vanes 20 to rotate, so that the conductive rod 21 rotates around the rotating shaft 5, the magnetic induction lines of the second permanent magnet 22 are continuously cut to generate induction current, and simultaneously, each moving direction of the piston 9 corresponds to one induction current direction of the conductive rod 21;

when pumping liquid, when the piston 9 moves rightwards, the emulsion in the pump liquid tank 8 is pumped into the liquid supply pipe 24 for supplying the emulsion, when the piston 9 moves leftwards, the emulsion in the oil tank 2 is pumped into the pump liquid tank 8 by the liquid suction pipe 25, when pumping liquid, the rotating shaft 5 drives the rotational flow blade 20 to rotate, so that the conductive rod 21 cuts the magnetic induction line of the second permanent magnet 22 to generate current, the current is supplied to the first electromagnet 19, so that the first electromagnet generates magnetic repulsion to the first permanent magnet 15, at the moment, the first permanent magnet 15 slides out the second conductive block 14 under the action of the magnetic repulsion, and simultaneously drives the first conductive block 12 to slide out, so that the first conductive block 12 slides to a certain position, the hydraulic force of the pump is gradually increased along with the progress of the liquid pumping process, and the resistance value of the first force-sensitive resistor 10 is continuously reduced, therefore, the magnetic repulsion force borne by the first permanent magnet 15 is increased every time when the liquid is pumped, so that the movement distance of the first permanent magnet is increased continuously, the first conductive block 12 slides back slowly due to the damping effect, so that the second conductive block 14 always contacts with the first conductive block 12 every time when the pressure is lost, the pressure of the pumping liquid of the piston 9 is reduced gradually, so that the movement distance of the second conductive block 14 is reduced continuously until the second conductive block 14 cannot contact with the first conductive block 12, the second conductive block 14 cannot contact with the first conductive block 12 for a long time due to the slow back sliding of the first conductive block 12, the sensor senses that no current passes through for a long time, and the first alarm lamp 23 is turned on to prompt a worker that the pressure is lost and the worker needs to overhaul in time;

in the rotating process of the rotating shaft 5, when the rotating vane 20 rotates, the emulsion in the oil tank 2 generates rotational flow, so that metal debris in the emulsion is subjected to a certain centrifugal force under the rotational flow of the emulsion and approaches to the second permanent magnet 22, and the metal debris is adsorbed to a certain extent by the magnetic force of the second permanent magnet 22, so that the emulsion is purified for the first time, smaller debris in the emulsion is clear, and larger debris can not be adsorbed by the second permanent magnet 22 due to insufficient centrifugal force, the movement distance of the larger debris is insufficient, and the larger debris can continuously move downwards as the emulsion is pumped out;

until the emulsion moves to the functional pipe 27, current with continuously changed direction is generated along with the rotation of the conducting rod 21, so that the second electromagnet 33 generates alternating magnetic force, when the second electromagnet 33 generates magnetic attraction force on the magnetic plate 32, the magnetic plate 32 slides downwards, emulsion in the oil tank 2 is sucked into the functional cavity 30, meanwhile, larger metal debris is sucked, when the second electromagnet 33 generates magnetic repulsion force on the magnetic plate 32, the magnetic plate 32 slides upwards, the sucked emulsion is pumped into the fixed block 29, so that the larger metal debris is adsorbed by the filter screen 35, and the filtered emulsion flows back into the oil tank 2 through the pressure release valve 36 and the return pipe 28 to be purified for the second time;

the emulsified liquid flows back from the top of the oil tank 2 and is pumped out from the bottom, so that the used emulsified liquid moves from top to bottom and can be pumped out after primary purification and secondary purification, thereby ensuring the purity of the emulsified liquid to a greater extent, avoiding deterioration and avoiding the deterioration of the hydraulic effect;

when purifying, if the oil mass is sufficient, promptly the whole submergence of whirl leaf 20 is in the emulsion, whirl leaf 20 rotates the resistance that receives this moment certainly, and when the oil mass is insufficient, when whirl leaf 20 only has the part to be located the emulsion, the resistance that whirl leaf 20 received this moment reduces, thereby make the pressure that second force sensing resistor 44 receives reduce, the resistance reduces, thereby make the magnetic force increase of second electro-magnet 33, the reciprocating motion length of magnetic sheet 32 increases this moment, drive the distance of third conducting block 38 motion increase, under the pressure when sufficient, the degree of third conducting block 38 downstream can't make third conducting block 38 and fourth conducting block 40 contact, second alarm lamp 41 is not bright, and when the oil mass is not enough, second electro-magnet 33 can make the contact of third conducting block 38 and fourth conducting block 40 clearance nature to the magnetic force of magnetic sheet 32 then, thereby make second alarm lamp 41 intermittent type scintillation, the staff can in time discover the oil mass in the oil tank 2 this moment, in time need add.

Claims

1. The centralized remote liquid supply system for the coal mine comprises a hollow main body (1) and an oil tank (2), wherein the main body (1) is fixedly connected with the upper surface of the oil tank (2), and is characterized in that pressure detection mechanisms are arranged in the main body (1) and the oil tank (2);

the pressure detection mechanism comprises a driving motor (4) fixedly connected with the upper surface of a main body (1), an output shaft of the driving motor (4) is connected with the main body in a penetrating and rotating mode through a bearing, the main body (1) and an oil tank (2) are connected with a rotating shaft (5) in a penetrating and rotating mode together, one end, located in the main body (1), of the output shaft of the driving motor (4) and one end, located in the main body (1), of the rotating shaft (5) are fixedly connected with a rotating block (6), a pump liquid tank (8) is arranged in the main body (1), a piston (9) is connected in the pump liquid tank (8) in a sealing and sliding mode, the two rotating blocks (6) are connected with a connecting rod (7) in a rotating mode through a pin shaft together, one end, far away from the rotating block (6), of the connecting rod (7) is connected with the side wall of the piston (9) in a rotating mode through a pin shaft, a first force-sensitive resistor (10) is embedded in the side wall, of the piston (9), a sensing cavity (11) is arranged in the main body (1), a first conductive block (12) and a second conductive block (14) are connected in the sensing cavity (11) in a sliding mode, and a permanent magnet (15) is connected with a first conductive block (14), first spring (13) of fixedly connected with between first conducting block (12) and perception chamber (11) inside wall, one section sliding connection that pivot (5) are located oil tank (2) has three whirl leaf (20), one of them be provided with conducting rod (21) in whirl leaf (20), equal fixedly connected with second permanent magnet (22) of two inside walls that oil tank (2) are relative, fixed surface is connected with first alarm lamp (23) on main part (1), and electricity is connected between first force sensing resistor (10), first electro-magnet (19), conducting rod (21).

2. The centralized remote liquid supply system for coal mines as defined in claim 1, wherein the main body (1) and the oil tank (2) are fixedly connected with a liquid suction pipe (25) through the same, a liquid supply pipe (24) is fixedly connected with the side wall of the main body (1) through the same, a liquid return pipe (26) is fixedly connected with the top wall of the oil tank (2) through the same, the liquid suction pipe (25) connects the pump liquid tank (8) with the inside of the oil tank (2), and the liquid suction pipe (25) and the liquid supply pipe (24) are both provided with a one-way valve.

3. The coal mine centralized remote liquid supply system according to claim 1, wherein two guide grooves (16) are formed in the inner side wall of the sensing cavity (11), guide rods (17) are slidably connected in the guide grooves (16), the guide rods (17) are fixedly connected with the side wall of the second conductive block (14) together, and a second spring (18) is fixedly connected between the guide rods (17) and the inner side wall of the guide grooves (16).

4. The coal mine centralized remote liquid supply system according to claim 1, wherein a secondary purification mechanism is arranged in the oil tank (2), the secondary purification mechanism comprises two hollow fixing blocks (29), a plurality of functional pipes (27) and a return pipe (28) are fixedly connected to the side wall, close to one side of the oil tank (2), of each fixing block (29) in a penetrating manner, the functional pipes (27) and the return pipe (28) are fixedly connected to the side wall of the oil tank (2) in a penetrating manner, functional cavities (30) are formed in two symmetrical side walls of the oil tank (2), a connecting pipe (31) is fixedly connected to the side wall of the oil tank (2) and the functional pipes (27) in a penetrating manner, the corresponding functional cavities (30) are communicated with the functional pipes (27) through the connecting pipe (31), magnetic plates (32) are connected to the functional cavities (30) in a sealing and sliding manner, and second electromagnets (33) are fixedly connected to the inner side walls of the functional cavities (30).

5. The centralized remote liquid supply system for the coal mine as claimed in claim 4, wherein the side wall of the fixed block (29) far away from the oil tank (2) is connected with a mounting block (34) in a penetrating and sealing sliding manner, and the side wall of the mounting block (34) at one side in the fixed block (29) is fixedly connected with a filter screen (35).

6. The coal mine centralized remote liquid supply system according to claim 4, wherein an oil amount prompting mechanism is arranged in the oil tank (2), the oil amount prompting mechanism comprises a limiting groove (37) formed in the inner side wall of the functional cavity (30), a third conductive block (38) is connected in the limiting groove (37) in a sliding mode in a sealing mode, the third conductive block (38) is fixedly connected with the corresponding magnetic plate (32), a plurality of third springs (39) are fixedly connected between the third conductive block (38) and the inner wall of the limiting groove (37), a fourth conductive block (40) is fixedly connected to the inner side wall of the limiting groove (37), and a second alarm lamp (41) is fixedly connected to the upper surface of the main body (1).

7. The centralized remote liquid supply system for the coal mines as set forth in claim 6, wherein a section of the rotating shaft (5) located in the oil tank (2) is provided with three sliding grooves (42), sliding blocks (43) are connected in the sliding grooves (42) in a sliding manner, the sliding blocks (43) are fixedly connected with the corresponding swirl vanes (20), and a second force-sensitive resistor (44) is arranged on the inner side wall of one of the sliding grooves (42).

8. The centralized remote liquid supply system for coal mines as set forth in claim 4, wherein both ends of the functional pipe (27) are provided with one-way valves, and the return pipe (28) is provided with a pressure relief valve (36) therein.