CN117599494A

CN117599494A - Coal mine water multistage filtering device

Info

Publication number: CN117599494A
Application number: CN202410078532.0A
Authority: CN
Inventors: 万武亮; 卢强; 陈朋磊; 吴怡恒; 胡继承; 李诚诚; 李文福; 王大顺; 石小刚; 李景方; 王硕
Original assignee: Zhongyun International Engineering Co ltd; Dezhou Qingde Mineral Products Co ltd
Current assignee: Zhongyun International Engineering Co ltd; Dezhou Qingde Mineral Products Co ltd
Priority date: 2024-01-19
Filing date: 2024-01-19
Publication date: 2024-02-27
Anticipated expiration: 2044-01-19
Also published as: CN117599494B

Abstract

The invention relates to the technical field of filtering devices, in particular to a coal mine water multistage filtering device. A multi-stage filter for the water in coal mine is composed of filter cylinder, rotary mechanism, induction mechanism and filter mechanism. Through adjusting the distance between the first filter screen and the first discharge port, when the impurity in water is more, namely, is higher than a normal value, the rotating plate moves downwards more and drives the first filter screen to descend more, so that the distance between the first filter screen and the first discharge port is shorter, the first discharge port can be opened when the blocking degree of the first filter screen does not reach a preset value, and then the impurity on the first filter screen is removed, the impurity removal frequency is quickened, and the first filter screen is prevented from being blocked. The invention provides a coal mine water multistage filtering device, which aims to solve the problems that solid particles are difficult to treat after being accumulated on a filter screen when the conventional filtering device is used for filtering, so that impurities are difficult to be discharged in time later, and waterways are blocked and meshes are blocked.

Description

Coal mine water multistage filtering device

Technical Field

The invention relates to the technical field of filtering devices, in particular to a coal mine water multistage filtering device.

Background

The filtering device is equipment widely applied to various industrial industries and is used for realizing solid-liquid separation, purifying fluid and guaranteeing the purity of process media. In the filter, the medium passes through the filter screen, and the particulate matter is caught on the filter screen, thereby achieving a filtering effect.

When coal is mined, groundwater is contacted with coal beds and rock strata, and a series of physical, chemical and biochemical reactions occur under the influence of human activities, so that the mine water is very turbid, and the internal coal blocks and ore blocks are far higher than surface water, so that the mine water is required to be filtered in view of environmental protection, and the aim of protecting the environment is fulfilled. In the primary filtration process, it is necessary to perform multistage filtration on mine water with large particles.

For example, the chinese patent publication No. CN114669097B provides a silicon carbide ceramic membrane device for mine water treatment, which filters mine water by using a silicon carbide ceramic membrane body, and introduces high-pressure gas into the interior of the fixed cylinder, so as to improve the filtering effect. However, when the silicon carbide ceramic membrane body is used for filtering, the solid particles are difficult to treat after being accumulated on the silicon carbide ceramic membrane body, and the impurities are difficult to be discharged in time later due to uncertain content of the particle impurities in water, so that the conditions of waterway blockage, mesh blockage and the like are caused.

Disclosure of Invention

The invention provides a coal mine water multistage filtering device, which aims to solve the problems that when the existing filtering device is used for filtering, solid particles are accumulated on a filter screen and are difficult to treat, and due to the fact that the content of particle impurities in water is uncertain, the impurities are difficult to discharge in time, waterways are blocked, and meshes are blocked.

The invention relates to a coal mine water multistage filtering device which adopts the following technical scheme: the utility model provides a colliery mine water multistage filter device includes cartridge filter, slewing mechanism, induction system and filtering mechanism, and slewing mechanism, induction system and filtering mechanism from the top down set gradually. The cartridge filter is vertical to be set up, has seted up first drainage subassembly and second drainage subassembly on the perisporium of cartridge filter, and the second drainage subassembly is in the below of first drainage subassembly. The first drain assembly includes at least one first drain port and the second drain assembly includes at least one second drain port. The rotating mechanism comprises a rotating shaft and a plurality of filter plates, the rotating shaft is vertically arranged and can be arranged in the filter cartridge around the axis of the rotating shaft, the plurality of filter plates are distributed along the circumferential direction of the rotating shaft, each filter plate is arranged along the radial direction of the rotating shaft, and the filter plates are obliquely arranged.

The filtering mechanism comprises a connecting ring, a first filter screen, a second filter screen and a plurality of first adjusting components. The connecting ring, the first filter screen and the second filter screen are sequentially arranged in the filter cartridge in a sliding manner from top to bottom. In the initial state, the first filter screen plugs the first outlet, and the second filter screen plugs the second outlet. When the first filter screen moves to the position below the first discharge port, the upper part of the first filter screen is communicated with the first discharge port, and when the second filter screen moves to the position below the second discharge port, the upper part of the second filter screen is communicated with the second discharge port.

The first adjusting assemblies are arranged between the connecting rings and the first filter screens, each first adjusting assembly comprises a transmission unit and two limiting units, and the transmission units are used for adjusting the distance between the upper side surface of the first filter screen and the first discharge outlet according to the downward moving distance of the connecting rings. The limiting unit is used for limiting the up-and-down movement of the connecting ring. The induction mechanism is used for driving the connecting ring to move downwards according to the weight of the impurities.

Further, the sensing mechanism includes a communication pipe assembly and a plurality of sensing assemblies. Each sensing assembly is arranged on one filter plate and comprises a sleeve, an outer tube and a first motor. The outer tube sets up along the incline direction of filter plate, and outer tube fixed connection in the filter plate one side of keeping away from the pivot. The outer tube is provided with a first through groove and a second through groove, and the bottom of the outer tube is fixedly provided with a first dislocation plate.

The sleeve rotationally sets up in the outer tube, and sleeve and outer tube set up with one heart, have seted up third through groove and filtration pore subassembly on the telescopic perisporium, and filtration pore subassembly includes a plurality of first filtration pores, and when first through groove and third through groove intercommunication, first filtration pore is in second through groove department. The bottom of sleeve is fixed to be provided with the second dislocation board, and second dislocation board offsets with first dislocation board, and second dislocation board and first dislocation board are used for the bottom shutoff with the outer tube, rotate the sleeve in order to open the bottom of outer tube. The first motor is fixedly arranged in the outer tube, and an output shaft of the first motor is fixedly connected with the sleeve.

The communicating pipe assembly comprises a rotating plate and a discharging pipe, and the rotating plate and the discharging pipe are arranged in the filter cartridge. The rotating plate is arranged in the filter cartridge in a vertical sliding mode, and can rotate around the axis of the rotating plate, and a first channel is formed in the rotating plate. The upper side of the rotating plate is fixedly provided with a plurality of first connecting pipes, the first connecting pipes are vertically arranged, the plurality of first connecting pipes are communicated with the first channel, and the lower end of each outer pipe is arranged in one first connecting pipe in a vertical sliding mode. The material discharging pipe is vertically arranged, the rotating plate, the material discharging pipe and the filter cylinder are concentrically arranged, the material discharging pipe is fixedly connected with the rotating plate, and the first channel is communicated with the material discharging pipe. The lower end of the discharge pipe is provided with an electromagnetic valve, and the electromagnetic valve is in a closed state in an initial state.

Further, a first baffle ring is fixedly arranged on the peripheral wall of the discharge pipe and is positioned above the connecting ring. The induction mechanism further comprises a friction baffle plate which is rotationally sleeved on the discharge pipe and is positioned above the first baffle ring. The peripheral wall of the friction baffle is in friction contact with the inner peripheral wall of the filter cartridge.

Further, the downside of go-between is fixed and is provided with a plurality of connecting blocks, and a plurality of connecting blocks distribute along the circumference of go-between. The downside of connecting block has seted up first helicla flute, and first helicla flute sets up along vertical direction.

The filter cartridge comprises a filter cartridge body, wherein a first fixing ring plate is fixedly arranged on the inner peripheral wall of the filter cartridge body, the first fixing ring plate and the filter cartridge body are concentrically arranged, the first fixing ring plate is positioned above a first discharge port, a plurality of limiting holes are formed in the first fixing ring plate, and the limiting holes are distributed along the circumference of the first fixing ring plate. The fixed a plurality of first stoppers that are provided with of downside of first fixed ring board, offered a spacing groove on every first stopper, the spacing groove sets up along vertical direction, every spacing hole and a spacing groove intercommunication.

The first adjusting assemblies are distributed along the circumference of the filter cartridge, and each transmission unit comprises a threaded rod, a second limiting block and a first spring. The threaded rods are vertically arranged, each threaded rod is rotationally arranged in one limiting hole, a second baffle ring and a third baffle ring are fixedly arranged in the middle of each threaded rod, and the second baffle ring and the third baffle ring are respectively positioned on the upper side and the lower side of each limiting hole. The upper portion of threaded rod rotationally sets up in first helicla flute, and first spiral arch has been seted up to the upper portion of threaded rod, and first helicla flute and first spiral protruding screw drive cooperation.

Every second stopper sets up in a spacing inslot with sliding from top to bottom, has seted up the second helicla flute on the second stopper, and the vertical setting of second helicla flute, the lower part of threaded rod rotationally sets up in the second helicla flute, and the second spiral arch has been seted up to the lower part of threaded rod, and second spiral arch and second helicla flute screw drive cooperation. The upper end fixed connection of first spring is in the second stopper, and the lower extreme fixed connection of first spring is in first filter screen.

Further, each connecting block is fixedly provided with a clamping groove along two sides of the circumference of the connecting ring in a distributed mode, and the clamping grooves are arranged along the tangential direction of the connecting ring. A plurality of connecting hole assemblies are arranged on the connecting ring, each connecting hole assembly is located at one connecting block, each connecting hole assembly comprises two connecting holes, and the two connecting holes are located at two sides of the connecting block along the circumference of the connecting ring.

The upper side of the first fixed ring plate is fixedly provided with a plurality of ratchet units, each ratchet unit is located right above one limiting groove, each ratchet unit comprises two ratchet blocks, the two ratchet blocks are located at two sides of the connecting block along the circumference of the connecting ring, and each ratchet block is provided with ratchet grooves arranged along the vertical direction.

Two spacing units on every first adjusting component set up respectively in the connecting block along the both sides of go-between's circumference. Each limiting unit comprises a telescopic rod, a wedge plate and a plurality of second springs. Each wedge plate is slidingly arranged in one clamping groove, and each wedge plate is slidingly arranged in one ratchet groove on the same side.

The plurality of second springs are arranged in one clamping groove, one end of each second spring is fixedly connected to the inner wall of the clamping groove, and the other end of each second spring is fixedly connected to the wedge-shaped plate. The wedge-shaped plate is provided with an inclined plane, and the inclined plane is gradually far away from the connecting block along the direction from top to bottom.

The telescopic links are vertically arranged, each telescopic link is slidably arranged in one connecting hole, each telescopic link comprises a second connecting pipe and a third connecting pipe, the lower end of each third connecting pipe is slidably arranged in each second connecting pipe, and the upper end of each third connecting pipe is used for propping against the lower side face of the rotating plate. The lower end of the second connecting pipe is propped against the inclined plane on the wedge-shaped plate. A third spring is arranged in each telescopic rod, the upper end of the third spring is fixedly connected with the inner wall of the third connecting pipe, and the lower end of the third spring is fixedly connected with the inner wall of the second connecting pipe.

Further, the sensing mechanism also comprises a reset assembly comprising a plurality of fourth springs and a plurality of fifth springs. One end of each fourth spring is fixedly connected to the lower end of the outer tube, and the other section of each fourth spring is fixedly connected to the upper side face of the rotating plate.

The lower extreme of connecting block is provided with the swivel becket, and the swivel becket sets up with first helicla flute is concentric, and the swivel becket can rotate for the connecting block, and every fifth spring cover is located on the threaded rod, and the upper end fixed connection of every fifth spring is in the swivel becket, and the lower extreme fixed connection of every fifth spring keeps off the ring in the second.

Further, a second fixing ring plate is fixedly arranged on the inner peripheral wall of the filter cartridge. The second fixed ring plate is positioned below the first fixed ring plate and between the first filter screen and the second filter screen. The filter mechanism further comprises a plurality of second adjusting assemblies, each second adjusting assembly comprises a plurality of sixth springs, the sixth springs are arranged along the circumference of the filter cylinder, the upper ends of the sixth springs are fixedly connected to the second fixing ring plates, and the lower ends of the sixth springs are fixedly connected to the upper side face of the second filter screen.

Further, the upper end of the filter cartridge is fixedly provided with a water inlet pipe, and the lower end of the filter cartridge is fixedly provided with a water outlet pipe.

Further, a first collecting groove, a second collecting groove and a third collecting groove are fixedly arranged on the peripheral wall of the filter cylinder. The first collecting tank, the second collecting tank and the third collecting tank are sequentially arranged along the direction from top to bottom, the first collecting tank is communicated with the first discharge port, and a plurality of second filtering holes are formed in the first collecting tank. The second collecting tank is communicated with the second discharge port, and a plurality of third filter holes are formed in the second collecting tank. The second filter holes and the third filter holes are staggered in the radial direction of the filter cartridge. The third collecting tank is communicated with the water outlet pipe and is used for collecting water filtered by the first collecting tank and the second collecting tank.

Further, the coal mine water multistage filtering device further comprises a second motor, the second motor is fixedly arranged on the filter cylinder, and an output shaft of the second motor is fixedly connected to the upper end of the rotating shaft.

The beneficial effects of the invention are as follows: according to the multi-stage filtering device for the water in the coal mine, through the obliquely arranged filter plates, the water has a downward movement tendency when the filter plates rotate, the downward pressure of the water is increased, the filtering efficiency is improved, and meanwhile, solid particles on the first filter screen and the second filter screen are gathered on the outer sides of the first filter screen and the second filter screen under the centrifugal action, so that the middle of the first filter screen is kept clean all the time, and the follow-up impurity removal is facilitated.

Through adjusting the distance of first filter screen and first discharge port, when impurity in the aquatic is more, be higher than normal value promptly, the more that the revolving plate moved down, and then drive the more that the go-between moved down, the more that the threaded rod pivoted, it descends more to drive first filter screen for the distance of first filter screen and first discharge port is shorter, just can open first discharge port when making the jam degree of first filter screen not reach the default, and then clear away impurity on the first filter screen for the frequency of arranging impurity, prevent that first filter screen from blockking up. When the impurity in the water is lower than the normal value, the distance between the first filter screen and the first discharge outlet is increased, so that the impurity discharging frequency is reduced, and the service life of the device is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a multi-stage filtration device for mine water in a coal mine, which is provided by an embodiment of the invention;

fig. 2 is a front view of a multi-stage filtration device for mine water in a coal mine according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view at A-A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 6 is an exploded view of a multi-stage filtration device for mine water in a coal mine provided by an embodiment of the invention;

FIG. 7 is an exploded view of a part of a structure of a multi-stage filtration device for mine water in a coal mine, which is provided by the embodiment of the invention;

FIG. 8 is an exploded view of a rotating mechanism and an induction mechanism of a multi-stage filtration device for mine water in a coal mine provided by an embodiment of the invention;

FIG. 9 is a front view of a rotating mechanism and an induction mechanism of a multi-stage filtration device for mine water in a coal mine, provided by an embodiment of the invention;

FIG. 10 is a cross-sectional view taken at C-C of FIG. 9;

fig. 11 is a top view of a part of a structure of a multi-stage filtration device for mine water in a coal mine according to an embodiment of the invention.

In the figure: 100. a filter cartridge; 101. a water inlet pipe; 102. a water outlet pipe; 103. a first collection tank; 104. a second collection tank; 105. a first discharge port; 106. a second discharge port; 107. a second fixed ring plate; 108. a limit groove; 1081. a limiting hole; 109. a ratchet block; 1091. a first fixed ring plate; 200. a second motor; 301. a first through groove; 302. an outer tube; 303. a first dislocation plate; 304. a second through slot; 310. a filter plate; 320. a rotating shaft; 400. a sleeve; 401. a third through slot; 402. a first filter hole; 410. a first motor; 500. a rotating plate; 501. a discharge pipe; 502. a first channel; 503. a first connection pipe; 504. a first baffle ring; 510. a friction baffle; 600. a connecting ring; 601. a connection hole; 602. a clamping groove; 603. a connecting block; 700. a first filter screen; 800. a second filter screen; 810. a sixth spring; 901. a second spring; 902. a second connection pipe; 903. a third connection pipe; 110. wedge plate; 120. a threaded rod; 121. a second baffle ring; 122. a third baffle ring; 130. a second limiting block; 140. a first spring; 150. and a third collection tank.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 11, the multi-stage filtration device for mine water in a coal mine provided by the embodiment of the invention comprises a filtration cartridge 100, a rotating mechanism, an induction mechanism and a filtration mechanism, wherein the rotating mechanism, the induction mechanism and the filtration mechanism are sequentially arranged from top to bottom. The filter cartridge 100 is vertically arranged, and a first water discharge assembly and a second water discharge assembly are arranged on the peripheral wall of the filter cartridge 100, wherein the second water discharge assembly is arranged below the first water discharge assembly. The first drain assembly includes at least one first drain opening 105. The second drain assembly includes at least one second drain opening 106. In other embodiments, there are a plurality of first exhaust ports 105, and the plurality of first exhaust ports 105 are distributed along the circumferential direction of the filter cartridge 100. The second discharge ports 106 are provided in plurality, and the plurality of second discharge ports 106 are distributed along the circumferential direction of the filter cartridge 100.

The rotary mechanism comprises a rotary shaft 320 and a plurality of filter plates 310, wherein the rotary shaft 320 is vertically arranged and can be arranged in the filter cartridge 100 around the axis of the rotary shaft, the filter plates 310 are distributed along the circumferential direction of the rotary shaft 320, each filter plate 310 is arranged along the radial direction of the rotary shaft 320, the filter plates 310 are obliquely arranged, an included angle is formed between the filter plates 310 and the axis of the rotary shaft 320, water has a downward movement trend when the filter plates 310 rotate, and a plurality of first through holes are formed in the filter plates 310 and are used for filtering.

The filter mechanism includes a connecting ring 600, a first screen 700, a second screen 800, and a plurality of first adjustment assemblies. The connection ring 600, the first filter screen 700 and the second filter screen 800 are slidably disposed in the filter cartridge 100 in this order from top to bottom. The first filter screen 700 is provided with a plurality of second through holes, the second filter screen 800 is provided with a plurality of third through holes, the second through holes and the third through holes are used for filtering, and the diameter of the second through holes is larger than that of the third through holes. In the initial state, the first filter 700 closes the first outlet 105, and the second filter 800 closes the second outlet 106. When the first screen 700 moves below the first discharge port 105, the upper side of the first screen 700 communicates with the first discharge port 105, and when the second screen 800 moves below the second discharge port 106, the upper side of the second screen 800 communicates with the second discharge port 106.

The first adjusting assemblies are disposed between the connection ring 600 and the first filter screen 700, each of the first adjusting assemblies includes a transmission unit and two limit units, and the transmission unit is used for adjusting the distance between the upper side of the first filter screen 700 and the first discharge port 105 according to the downward moving distance of the connection ring 600. The limiting unit serves to limit the up-and-down movement of the connection ring 600. The sensing mechanism is used for driving the connecting ring 600 to move downwards according to the weight of the impurities.

In this embodiment, the sensing mechanism includes a communication pipe assembly and a plurality of sensing assemblies. Each sensing assembly is disposed on one filter plate 310, each sensing assembly including a sleeve 400, an outer tube 302, and a first motor 410. The outer tube 302 is disposed along an inclined direction of the filter plate 310, and the outer tube 302 is fixedly connected to a side of the filter plate 310 remote from the rotation shaft 320. The outer tube 302 is provided with a first through groove 301 and a second through groove 304, the first through groove 301 and the second through groove 304 are distributed along the circumferential direction of the outer tube 302, and the bottom of the outer tube 302 is fixedly provided with a first dislocation plate 303.

The sleeve 400 is rotatably arranged in the outer tube 302, the sleeve 400 and the outer tube 302 are concentrically arranged, a third through groove 401 and a filter hole assembly are formed in the peripheral wall of the sleeve 400, the third through groove 401 and the filter hole assembly are distributed along the circumferential direction of the outer tube 302, the filter hole assembly comprises a plurality of first filter holes 402, and when the first through groove 301 and the third through groove 401 are communicated, the first filter holes 402 are positioned at the second through groove 304. The bottom of sleeve 400 is fixedly provided with the second dislocation board, and second dislocation board and first dislocation board 303 offset, and second dislocation board and first dislocation board 303 are used for the shutoff of the bottom of outer tube 302, rotate sleeve 400 in order to open the bottom of outer tube 302. The first motor 410 is fixedly disposed in the outer tube 302, and an output shaft of the first motor 410 is fixedly connected to the sleeve 400.

The communication pipe assembly includes a rotation plate 500 and a discharge pipe 501, and the rotation plate 500 and the discharge pipe 501 are disposed in the filter cartridge 100. The rotating plate 500 is disposed in the filter cartridge 100 in a vertically sliding manner, and the rotating plate 500 can rotate around its own axis, and a first channel 502 is formed in the rotating plate 500. The upper side of the rotating plate 500 is fixedly provided with a plurality of first connecting pipes 503, the first connecting pipes 503 are vertically arranged, the plurality of first connecting pipes 503 are communicated with the first channel 502, and the lower end of each outer pipe 302 is arranged in one first connecting pipe 503 in a sliding manner up and down.

The discharge pipe 501 is vertically arranged, and the rotating plate 500, the discharge pipe 501 and the filter cartridge 100 are concentrically arranged, the discharge pipe 501 is fixedly connected with the rotating plate 500, and the first channel 502 is communicated with the discharge pipe 501. The lower end of the discharge pipe 501 is provided with a solenoid valve, which is in a closed state in an initial state.

The first motor 410 is started, the first motor 410 drives the sleeve 400 to rotate, so that the first through groove 301 and the third through groove 401 are communicated, at this time, the first filtering holes 402 are positioned at the second through groove 304, and the second dislocation plate and the first dislocation plate 303 are staggered and close the bottom of the outer tube 302. The water is filtered using the first filter holes 402 so that impurities in the filter cartridge 100 at the rotation mechanism enter the sleeve 400 for a while, after which the first motor 410 is started again, the first motor 410 rotates the sleeve 400 so that the first through groove 301 and the third through groove 401 are not communicated any more, and the bottom of the outer tube 302 is opened. At this point, the sleeve 400 is a mixture of water and impurities, which enters the first channel 502 in the rotor plate 500 and into the discharge pipe 501, and the weight of the rotor plate 500 increases to start moving downward.

In this embodiment, a first blocking ring 504 is fixedly disposed on the peripheral wall of the discharge pipe 501, and the first blocking ring 504 is located above the connection ring 600. The sensing mechanism further includes a friction damper 510, the friction damper 510 is rotatably sleeved on the discharge pipe 501, and the friction damper 510 is located above the first baffle ring 504. The peripheral wall of the friction plate 510 is in frictional contact with the inner peripheral wall of the filter cartridge 100.

In the initial state, the friction damper 510 abuts against the first baffle ring 504, and the friction damper 510 is in the zero-boundary position. Since the peripheral wall of the friction plate 510 is in frictional contact with the inner peripheral wall of the filter cartridge 100, the friction plate 510 does not move when the rotation plate 500 moves downward, and the distance between the rotation plate 500 and the friction plate 510 becomes gradually shorter. When the rotating plate 500 and the friction baffle 510 are propped against each other, the rotating plate 500 drives the friction baffle 510 to synchronously move downwards. When the rotating plate 500 moves upwards, the friction baffle 510 does not move, and when the first baffle ring 504 and the friction baffle 510 are propped against each other, the rotating plate 500 moves upwards to drive the friction baffle 510 to synchronously move upwards.

In the present embodiment, a plurality of connection blocks 603 are fixedly provided on the lower side surface of the connection ring 600, and the plurality of connection blocks 603 are distributed along the circumferential direction of the connection ring 600. The first spiral groove is provided on the lower side of the connection block 603, and is provided along the vertical direction.

The inner peripheral wall of the filter cartridge 100 is fixedly provided with a first fixed ring plate 1091, the first fixed ring plate 1091 and the filter cartridge 100 are concentrically arranged, the first fixed ring plate 1091 is located above the first discharge port 105, a plurality of limit holes 1081 are formed in the first fixed ring plate 1091, and the plurality of limit holes 1081 are distributed along the circumferential direction of the first fixed ring plate 1091. The fixed a plurality of first stoppers that are provided with of downside of first fixed ring board 1091, offered a spacing groove 108 on every first stopper, spacing groove 108 sets up along vertical direction, every spacing hole 1081 and a spacing groove 108 intercommunication.

A plurality of first adjustment assemblies are distributed along the circumference of the filter cartridge 100, and each transmission unit includes a threaded rod 120, a second stopper 130, and a first spring 140. The threaded rods 120 are vertically arranged, each threaded rod 120 is rotationally arranged in one limiting hole 1081, a second baffle ring 121 and a third baffle ring 122 are fixedly arranged in the middle of each threaded rod 120, and the second baffle ring 121 and the third baffle ring 122 are respectively arranged on the upper side and the lower side of the limiting hole 1081. The upper portion of the threaded rod 120 is rotatably disposed in the first spiral groove, and the upper portion of the threaded rod 120 is provided with a first spiral protrusion, and the first spiral groove and the first spiral protrusion are in spiral transmission fit.

Each second limiting block 130 is arranged in one limiting groove 108 in a vertically sliding mode, a second spiral groove is formed in each second limiting block 130, the second spiral grooves are vertically formed in each second spiral groove, the lower portion of each threaded rod 120 is rotatably arranged in each second spiral groove, second spiral protrusions are formed in the lower portion of each threaded rod 120, and the second spiral protrusions are in spiral transmission fit with the second spiral grooves. The upper end of the first spring 140 is fixedly connected to the second limiting block 130, and the lower end of the first spring 140 is fixedly connected to the first filter screen 700.

When the rotating plate 500 drives the connecting ring 600 to move down synchronously, the connecting ring 600 drives the connecting block 603 to move down synchronously, and the first spiral groove and the first spiral protrusion are in spiral transmission fit, so that the threaded rod 120 rotates when the connecting block 603 moves down. Because the four spiral grooves are in spiral transmission fit with the second spiral grooves, when the threaded rod 120 rotates, the second limiting block 130 is driven to slide in the limiting groove 108, the second limiting block 130 moves downwards, and the first filter screen 700 is pushed to move downwards by the first spring 140, so that the distance between the first filter screen 700 and the first exhaust port 105 is reduced.

In this embodiment, each connecting block 603 is fixedly provided with a clamping groove 602 along two circumferential sides of the connecting ring 600, and the clamping grooves 602 are arranged along the tangential direction of the connecting ring 600. The connecting ring 600 is provided with a plurality of connecting hole assemblies, each connecting hole assembly is positioned at one connecting block 603, each connecting hole assembly comprises two connecting holes 601, and the two connecting holes 601 are positioned at two sides of the connecting block 603 along the circumferential direction of the connecting ring 600.

The upper side of the first fixed ring plate 1091 is fixedly provided with a plurality of ratchet units, each ratchet unit is located right above one limiting groove 108, each ratchet unit comprises two ratchet blocks 109, the two ratchet blocks 109 are located on two sides of the connecting block 603 along the circumferential direction of the connecting ring 600, and each ratchet block 109 is provided with ratchet grooves arranged along the vertical direction.

The two limiting units on each first adjusting component are respectively arranged at two sides of the connecting block 603 along the circumferential direction of the connecting ring 600. Each of the limit units includes a telescopic rod, a wedge plate 110, and a plurality of second springs 901. Each wedge plate 110 is slidably disposed within one of the detents 602, and each wedge plate 110 is slidably disposed within one of the ratchet slots on the same side.

The plurality of second springs 901 are disposed in one of the clamping grooves 602, one end of each second spring 901 is fixedly connected to the inner wall of the clamping groove 602, and the other end of each second spring 901 is fixedly connected to the wedge plate 110. The wedge plate 110 is provided with a slope gradually moving away from the connection block 603 in the direction from top to bottom.

The telescopic rods are vertically arranged, each telescopic rod is slidably arranged in one connecting hole 601, each telescopic rod comprises a second connecting pipe 902 and a third connecting pipe 903, the lower end of each third connecting pipe 903 is slidably arranged in each second connecting pipe 902, and the upper end of each third connecting pipe 903 is used for propping against the lower side face of the rotating plate 500. The lower end of the second connecting tube 902 abuts against the inclined surface on the wedge plate 110. A third spring is arranged in each telescopic rod, the upper end of the third spring is fixedly connected with the inner wall of the third connecting pipe 903, and the lower end of the third spring is fixedly connected with the inner wall of the second connecting pipe 902. The second connecting tube 902 is fixedly provided with a magnetic member, and the magnetism of the magnetic member is opposite to that of the second connecting tube 902, so that the inclined surfaces on the second connecting tube 902 and the wedge plate 110 are always abutted.

When the rotating plate 500 moves downwards, the rotating plate 500 contacts with the third connecting pipe 903, the rotating plate 500 pushes the third connecting pipe 903 to press the third spring, and under the action of the third spring, the second connecting pipe 902 is driven to move downwards, the lower end of the second connecting pipe 902 gradually pushes the wedge plate 110 to move towards the direction close to the connecting block 603, the wedge plate 110 and the ratchet groove are separated from contact, and the connecting ring 600 is unlocked.

When the rotating plate 500 moves upwards, the rotating plate 500 is separated from the third connecting pipe 903, and after the rotating plate 500 is separated from the third connecting pipe 903, the wedge plate 110 gradually enters into the ratchet slot under the action of the second spring 901, so that the connecting ring 600 is kept still. While the wedge plate 110 moves toward the ratchet groove to drive the second connection pipe 902 to move upward for restoration.

In this embodiment, the sensing mechanism further includes a reset assembly including a plurality of fourth springs and a plurality of fifth springs. One end of each fourth spring is fixedly connected to the lower end of the outer tube 302, and the other end of each fourth spring is fixedly connected to the upper side of the rotating plate 500. When the solenoid valve is opened, the weight of the rotating plate 500 is reduced after the mixture in the discharge pipe 501 is discharged, and the rotating plate 500 is moved upward to be restored by the fourth spring.

The lower extreme of connecting block 603 is provided with the swivel becket, and the swivel becket sets up with first helicla flute is concentric, and the swivel becket can rotate for connecting block 603, and every fifth spring housing is located on threaded rod 120, and the upper end fixed connection of every fifth spring is in the swivel becket, and the lower extreme fixed connection of every fifth spring keeps off ring 121 in the second. When the rotating plate 500 and the connecting ring 600 are not contacted and the wedge plate 110 and the ratchet groove are separated from contact, the connecting ring 600 is in the zero-limit position under the action of the unlocking fifth spring, and the connecting ring 600 abuts against the lower side surface of the friction baffle 510.

In the present embodiment, the second fixing ring plate 107 is fixedly provided on the inner peripheral wall of the filter cartridge 100. The second retaining ring 107 is positioned below the first retaining ring 1091 and between the first screen 700 and the second screen 800. The filtering mechanism further includes a plurality of second adjusting assemblies, each second adjusting assembly includes a plurality of sixth springs 810, the plurality of sixth springs 810 are disposed along the circumference of the filter cartridge 100, an upper end of each sixth spring 810 is fixedly connected to the second fixing ring plate 107, and a lower end of each sixth spring 810 is fixedly connected to an upper side surface of the second filter screen 800.

When the second filter screen 800 is blocked up to a preset value, the second filter screen 800 moves downward under the action of gravity, the second filter screen 800 does not block the second discharge port 106 any more, after the impurities on the second filter screen 800 are removed, the second filter screen 800 moves upward under the action of the sixth spring 810, and the second discharge port 106 is blocked again.

In this embodiment, a water inlet pipe 101 is fixedly provided at the upper end of the filter cartridge 100, and a water outlet pipe 102 is fixedly provided at the lower end of the filter cartridge 100.

In the present embodiment, the first, second and third collecting grooves 103, 104 and 150 are fixedly provided on the outer circumferential wall of the filter cartridge 100. The first collecting tank 103, the second collecting tank 104 and the third collecting tank 150 are sequentially arranged along the direction from top to bottom, the first collecting tank 103 is communicated with the first discharge outlet 105, and a plurality of second filtering holes are formed in the first collecting tank 103. The second collecting tank 104 is communicated with the second outlet 106, and a plurality of third filter holes are formed in the second collecting tank 104. The second filter holes and the third filter holes are staggered in the radial direction of the filter cartridge 100. The third collecting tank 150 is communicated with the water outlet pipe 102, and the third collecting tank 150 is used for collecting the water filtered from the first collecting tank 103 and the second collecting tank 104.

When the first filter screen 700 is blocked up to a preset value, the first filter screen 700 moves downward under the action of gravity, the first filter screen 700 does not block the first discharge port 105 any more, the upper side surface of the first filter screen 700 is communicated with the filter cartridge 100, part of water in the filter cartridge 100 is discharged into the first collecting tank 103 from the first discharge port 105 along with impurities on the first filter screen 700, so that the first filter screen 700 is completely discharged, water in the first collecting tank 103 is filtered again, and the filtered water enters the third collecting tank 150 and finally is discharged from the water outlet pipe 102. After the impurities on the first screen 700 are removed, the first screen 700 moves upward under the action of the first spring 140, and the first discharge port 105 is plugged again.

When the second filter screen 800 is blocked up to a preset value, the second filter screen 800 moves downward under the action of gravity, the second filter screen 800 does not block the second discharge port 106 any more, part of the water in the filter cartridge 100 carries impurities on the second filter screen 800 to be discharged from the second discharge port 106 and then enters the second collecting tank 104, so that the impurity removal of the second filter screen 800 is completed, and the filtered water enters the third collecting tank 150 and finally is discharged from the water outlet pipe 102. After the impurities on the second screen 800 are removed, the second screen 800 moves upward under the action of the sixth spring 810, and the second discharge port 106 is again blocked.

In this embodiment, the coal mine water multistage filtering device further includes a second motor 200, the second motor 200 is fixedly disposed on the filter cartridge 100, and an output shaft of the second motor 200 is fixedly connected to an upper end of the rotating shaft 320.

The working process comprises the following steps: a multi-stage filter for water in coal mine is composed of regulating phase and reset phase.

Water enters the filter cartridge 100 from the water inlet pipe 101 and is filtered by the filter plate 310, the first filter screen 700, and the second filter screen 800 in this order from the top. The second motor 200 is started, the second motor 200 drives the rotating shaft 320 to rotate, and then the filter plate 310 is driven to rotate, because the filter plate 310 is obliquely arranged, water has a downward movement trend when the filter plate 310 rotates, downward pressure of the water is increased, filtering efficiency is improved, and solid particles on the first filter screen 700 and the second filter screen 800 are gathered outside the first filter screen 700 and the second filter screen 800 under the centrifugal action, so that a clean state is kept in the middle of the first filter screen 700 all the time, and impurities can be conveniently removed later.

In the initial state, the first through groove 301 and the third through groove 401 are staggered, that is, the first through groove 301 and the third through groove 401 are not communicated, the first filtering holes 402 are blocked by the sleeve 400, the second dislocation plate and the first dislocation plate 303 are overlapped, the bottom of the outer tube 302 is in an open state, and the electromagnetic valve is in a closed state.

And (3) adjusting: the first motor 410 is started, the first motor 410 drives the sleeve 400 to rotate, so that the first through groove 301 and the third through groove 401 are communicated, at this time, the first filtering holes 402 are positioned at the second through groove 304, and the second dislocation plate and the first dislocation plate 303 are staggered and close the bottom of the outer tube 302. The water is filtered using the first filter holes 402 so that impurities in the filter cartridge 100 at the rotation mechanism enter the sleeve 400 for a while, after which the first motor 410 is started again, the first motor 410 rotates the sleeve 400 so that the first through groove 301 and the third through groove 401 are not communicated any more, and the bottom of the outer tube 302 is opened. At this time, the sleeve 400 is in a state of mixing water and impurities, and the mixture enters the first passage 502 of the rotating plate 500 and enters the discharge pipe 501, and the weight of the rotating plate 500 increases to start moving downward.

In the initial state, the friction baffle 510 abuts against the first baffle ring 504, and each wedge plate 110 is positioned in one ratchet slot on the same side. The friction damper 510 is at the zero-limit position, and the highest position where the connecting ring 600 can rise is that the connecting ring 600 abuts against the lower side surface of the friction damper 510. When the connection ring 600 is at the lowest position where the connection ring 600 can be lowered, the third connection pipe 903 is at a zero-boundary position or more. When the water in the rotating plate 500 is free from impurities, the lowest position where the rotating plate 500 can be lowered is below the zero limit position. The distance between the rotating plate 500 and the first blocking ring 504 is long.

Since the peripheral wall of the friction plate 510 is in frictional contact with the inner peripheral wall of the filter cartridge 100, the friction plate 510 does not move when the rotation plate 500 moves downward, and the distance between the rotation plate 500 and the friction plate 510 becomes gradually shorter.

When the rotating plate 500 moves downwards, the rotating plate 500 contacts with the third connecting pipe 903, the rotating plate 500 pushes the third connecting pipe 903 to press the third spring, and under the action of the third spring, the second connecting pipe 902 is driven to move downwards, the lower end of the second connecting pipe 902 gradually pushes the wedge plate 110 to move towards the direction close to the connecting block 603, and the wedge plate 110 and the ratchet groove are separated from contact. The connection ring 600 is unlocked and the connection ring 600 is at the highest position of the connection ring 600 under the action of the fifth spring.

The rotating plate 500 continues to descend, and after the rotating plate 500 descends to be in contact with the friction baffle 510, the rotating plate 500 drives the friction baffle 510 to synchronously move downwards. After that, the friction damper 510 and the connecting ring 600 are contacted to drive the connecting ring 600 to move downwards synchronously, and the third connecting pipe 903 penetrates into the second connecting pipe 902. The connection ring 600 drives the connection block 603 and the wedge plate 110 to move downward synchronously, and the threaded rod 120 rotates when the connection block 603 moves downward due to the screw driving cooperation of the first screw groove and the first screw protrusion. Because the four spiral grooves are in spiral transmission fit with the second spiral grooves, when the threaded rod 120 rotates, the second limiting block 130 is driven to slide in the limiting groove 108, the second limiting block 130 moves downwards, and the first filter screen 700 is pushed to move downwards by the first spring 140, so that the distance between the first filter screen 700 and the first exhaust port 105 is reduced.

The first screen 700 includes a first section, a second section, and a third section from top to bottom in order, the third section being nearest to the first discharge port 105 and above the first discharge port 105. The first screen 700 can be lowered to the second section when the foreign matter in the water is at a normal range value, the first screen 700 can be lowered to the first section when the foreign matter in the water is lower than a normal value, and the first screen 700 can be lowered to the third section when the foreign matter in the water is higher than a normal value.

That is, when the more impurities in the water are higher than the normal value, the more the rotating plate 500 moves downwards, and the more the connecting ring 600 is driven to move downwards, the more the threaded rod 120 rotates, the more the first filter screen 700 is driven to descend, so that the distance between the first filter screen 700 and the first discharge outlet 105 is shorter, the first discharge outlet 105 can be opened when the blocking degree of the first filter screen 700 does not reach the preset value, the impurities on the first filter screen 700 are removed, the impurity removal frequency is quickened, and the blocking of the first filter screen 700 is prevented. When the impurity in the water is lower than the normal value, the distance between the first filter screen 700 and the first discharge outlet 105 is increased, so that the impurity discharging frequency is reduced, and the service life of the device is prolonged.

And (3) a reset stage: when the adjustment is completed once, the solenoid valve is opened to discharge the mixture in the discharge pipe 501, the weight of the rotating plate 500 is reduced, and the rotating plate 500 is moved upward to be restored under the action of the fourth spring. Since the peripheral wall of the friction plate 510 is in frictional contact with the inner peripheral wall of the filter cartridge 100, the friction plate 510 does not move when the rotation plate 500 moves upward, the distance between the rotation plate 500 and the friction plate 510 gradually becomes longer, the connection ring 600 is kept stationary by the friction plate 510, and the third spring gradually resets. The rotating plate 500 is firstly separated from contact with the third connecting pipe 903, and after the rotating plate is separated from contact, the wedge-shaped plate 110 gradually enters into the ratchet groove under the action of the second spring 901, so that the connecting ring 600 is kept still. While the wedge plate 110 moves toward the ratchet groove to drive the second connection pipe 902 to move upward for restoration. After that, the rotating plate 500 continues to rise, so that after the friction baffle 510 abuts against the first baffle ring 504, the rotating plate 500 drives the friction baffle 510 to reset. At this time, the reset of the counter plate 500 and the friction plate 510 is completed, and the connection ring 600 stays at the adjusted position and maintains this position for a while.

Readjusting stage: when the first motor 410 is started again after a period of operation, the rotating plate 500 is moved downward by the foreign matter collected by the turning mechanism. When the rotating plate 500 moves downwards, the rotating plate 500 contacts with the upper end of the third connecting pipe 903, then the rotating plate 500 moves downwards to drive the second connecting pipe 902 to move downwards, and the lower end of the second connecting pipe 902 gradually pushes the wedge plate 110 to move towards the direction close to the connecting block 603, so that the wedge plate 110 and the ratchet groove are separated from contact. The connection ring 600 is unlocked and the connection ring 600 moves upward back to the uppermost position of the connection ring 600 under the action of the fifth spring. The rotating plate 500 continues to descend, and after the rotating plate 500 descends to be in contact with the friction baffle 510, the rotating plate 500 drives the friction baffle 510 to synchronously move downwards.

In the limit state, when the last adjustment causes the connection ring 600 to be at the lowest position due to excessive impurities, the upper end of the second connection pipe 902 is above the zero limit position. When the rotating plate 500 contains impurities in the next adjustment, the rotating plate 500 can move below the zero-limit position. Therefore, when the rotating plate 500 moves downward, after reaching the zero-limit position, the rotating plate 500 and the third connecting pipe 903 first move downward, and the second connecting pipe 902 is pressed to move downward, so that the connecting ring 600 is unlocked, the connecting ring 600 moves upward to return to the highest position of the connecting ring 600, and the rotating plate 500 and the friction damper 510 can be contacted to drive the connecting ring 600 to move downward synchronously.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The utility model provides a colliery mine water multistage filter equipment which characterized in that:

the filter comprises a filter cartridge, a rotating mechanism, an induction mechanism and a filtering mechanism, wherein the rotating mechanism, the induction mechanism and the filtering mechanism are sequentially arranged from top to bottom; the filter cartridge is vertically arranged, a first water discharge assembly and a second water discharge assembly are arranged on the peripheral wall of the filter cartridge, and the second water discharge assembly is positioned below the first water discharge assembly; the first drain assembly includes at least one first drain port, and the second drain assembly includes at least one second drain port; the rotating mechanism comprises a rotating shaft and a plurality of filter plates, the rotating shaft is vertically arranged and can be arranged in the filter cartridge around the axis of the rotating shaft, the plurality of filter plates are distributed along the circumferential direction of the rotating shaft, each filter plate is arranged along the radial direction of the rotating shaft, and the filter plates are obliquely arranged;

The filtering mechanism comprises a connecting ring, a first filter screen, a second filter screen and a plurality of first adjusting components; the connecting ring, the first filter screen and the second filter screen are sequentially arranged in the filter cartridge in a sliding manner from top to bottom; in an initial state, the first filter screen plugs the first outlet, and the second filter screen plugs the second outlet; when the first filter screen moves to the lower part of the first discharge port, the upper part of the first filter screen is communicated with the first discharge port, and when the second filter screen moves to the lower part of the second discharge port, the upper part of the second filter screen is communicated with the second discharge port;

the first adjusting assemblies are arranged between the connecting rings and the first filter screens, each first adjusting assembly comprises a transmission unit and two limiting units, and the transmission units are used for adjusting the distance between the upper side surface of the first filter screen and the first discharge outlet according to the downward moving distance of the connecting rings; the limiting unit is used for limiting the up-and-down movement of the connecting ring; the induction mechanism is used for driving the connecting ring to move downwards according to the weight of the impurities.

2. A multi-stage filtration device for mine water in a coal mine as claimed in claim 1, wherein:

the induction mechanism comprises a communicating pipe assembly and a plurality of induction assemblies; each induction component is arranged on one filter plate and comprises a sleeve, an outer tube and a first motor; the outer tube is arranged along the inclined direction of the filter plate, and is fixedly connected to one side of the filter plate far away from the rotating shaft; the outer tube is provided with a first through groove and a second through groove, and the bottom of the outer tube is fixedly provided with a first dislocation plate;

The sleeve is rotationally arranged in the outer tube, the sleeve and the outer tube are concentrically arranged, a third through groove and a filter hole assembly are formed in the peripheral wall of the sleeve, the filter hole assembly comprises a plurality of first filter holes, and when the first through groove is communicated with the third through groove, the first filter holes are positioned at the second through groove; the bottom of the sleeve is fixedly provided with a second dislocation plate, the second dislocation plate is propped against the first dislocation plate, the second dislocation plate and the first dislocation plate are used for plugging the bottom of the outer tube, and the sleeve is rotated to open the bottom of the outer tube; the first motor is fixedly arranged in the outer tube, and an output shaft of the first motor is fixedly connected with the sleeve;

the communicating pipe assembly comprises a rotating plate and a discharging pipe, and the rotating plate and the discharging pipe are arranged in the filter cartridge; the rotating plate is arranged in the filter cartridge in a vertically sliding manner, can rotate around the axis of the rotating plate, and is internally provided with a first channel; the upper side surface of the rotating plate is fixedly provided with a plurality of first connecting pipes, the first connecting pipes are vertically arranged, the plurality of first connecting pipes are communicated with the first channel, and the lower end of each outer pipe is arranged in one first connecting pipe in a vertically sliding manner; the material discharging pipe is vertically arranged, the rotating plate, the material discharging pipe and the filter cartridge are concentrically arranged, the material discharging pipe is fixedly connected with the rotating plate, and the first channel is communicated with the material discharging pipe; the lower end of the discharge pipe is provided with an electromagnetic valve, and the electromagnetic valve is in a closed state in an initial state.

3. A multi-stage filtration device for mine water in a coal mine as claimed in claim 2, wherein:

a first baffle ring is fixedly arranged on the peripheral wall of the discharge pipe and is positioned above the connecting ring; the induction mechanism further comprises a friction baffle plate which is rotationally sleeved on the discharge pipe and is positioned above the first baffle ring; the peripheral wall of the friction baffle is in friction contact with the inner peripheral wall of the filter cartridge.

4. A multi-stage filtration device for mine water in a coal mine as claimed in claim 2, wherein:

the lower side surface of the connecting ring is fixedly provided with a plurality of connecting blocks, and the plurality of connecting blocks are distributed along the circumferential direction of the connecting ring; the lower side surface of the connecting block is provided with a first spiral groove which is arranged along the vertical direction;

the inner peripheral wall of the filter cartridge is fixedly provided with a first fixed ring plate, the first fixed ring plate and the filter cartridge are concentrically arranged, the first fixed ring plate is positioned above the first discharge port, the first fixed ring plate is provided with a plurality of limiting holes, and the limiting holes are distributed along the circumferential direction of the first fixed ring plate; the lower side surface of the first fixed ring plate is fixedly provided with a plurality of first limiting blocks, each first limiting block is provided with a limiting groove, the limiting grooves are arranged along the vertical direction, and each limiting hole is communicated with one limiting groove;

The first adjusting assemblies are distributed along the circumferential direction of the filter cartridge, and each transmission unit comprises a threaded rod, a second limiting block and a first spring; the threaded rods are vertically arranged, each threaded rod is rotationally arranged in one limiting hole, a second baffle ring and a third baffle ring are fixedly arranged in the middle of each threaded rod, and the second baffle ring and the third baffle ring are respectively arranged on the upper side and the lower side of each limiting hole; the upper part of the threaded rod is rotationally arranged in the first spiral groove, a first spiral bulge is arranged on the upper part of the threaded rod, and the first spiral groove is in spiral transmission fit with the first spiral bulge;

each second limiting block is arranged in one limiting groove in a vertical sliding mode, a second spiral groove is formed in each second limiting block, the second spiral grooves are vertically arranged, the lower portion of each threaded rod is rotatably arranged in each second spiral groove, second spiral protrusions are formed in the lower portion of each threaded rod, and the second spiral protrusions are in spiral transmission fit with the second spiral grooves; the upper end fixed connection of first spring is in the second stopper, and the lower extreme fixed connection of first spring is in first filter screen.

5. The multi-stage filtration device for mine water of coal mine as claimed in claim 4, wherein:

each connecting block is fixedly provided with a clamping groove along two sides of the circumference of the connecting ring in a distributed manner, and the clamping grooves are arranged along the tangential direction of the connecting ring; the connecting ring is provided with a plurality of connecting hole assemblies, each connecting hole assembly is positioned at one connecting block, each connecting hole assembly comprises two connecting holes, and the two connecting holes are positioned at two sides of the connecting block along the circumferential direction of the connecting ring;

The upper side surface of the first fixed ring plate is fixedly provided with a plurality of ratchet units, each ratchet unit is positioned right above one limiting groove, each ratchet unit comprises two ratchet blocks, the two ratchet blocks are positioned at two sides of the connecting block along the circumferential direction of the connecting ring, and each ratchet block is provided with a ratchet slot arranged along the vertical direction;

the two limiting units on each first adjusting component are respectively arranged at two sides of the connecting block along the circumferential direction of the connecting ring; each limiting unit comprises a telescopic rod, a wedge plate and a plurality of second springs; each wedge plate is arranged in one clamping groove in a sliding manner, and each wedge plate is arranged in one ratchet groove on the same side in a sliding manner;

the plurality of second springs are arranged in one clamping groove, one ends of the second springs are fixedly connected to the inner wall of the clamping groove, and the other ends of the second springs are fixedly connected to the wedge-shaped plate; the wedge-shaped plate is provided with an inclined plane, and the inclined plane is gradually far away from the connecting block along the direction from top to bottom;

the telescopic rods are vertically arranged, each telescopic rod is slidably arranged in one connecting hole, each telescopic rod comprises a second connecting pipe and a third connecting pipe, the lower end of each third connecting pipe is slidably arranged in each second connecting pipe, and the upper end of each third connecting pipe is used for propping against the lower side face of the rotating plate; the lower end of the second connecting pipe is propped against the inclined plane on the wedge plate; a third spring is arranged in each telescopic rod, the upper end of the third spring is fixedly connected with the inner wall of the third connecting pipe, and the lower end of the third spring is fixedly connected with the inner wall of the second connecting pipe.

6. The multi-stage filtration device for mine water of coal mine as claimed in claim 4, wherein:

the sensing mechanism further comprises a reset assembly, wherein the reset assembly comprises a plurality of fourth springs and a plurality of fifth springs; one end of each fourth spring is fixedly connected to the lower end of the outer tube, and the other section of each fourth spring is fixedly connected to the upper side surface of the rotating plate;

7. A multi-stage filtration device for mine water in a coal mine as claimed in claim 1, wherein:

the inner peripheral wall of the filter cartridge is fixedly provided with a second fixed ring plate; the second fixed ring plate is positioned below the first fixed ring plate and between the first filter screen and the second filter screen; the filter mechanism further comprises a plurality of second adjusting assemblies, each second adjusting assembly comprises a plurality of sixth springs, the sixth springs are arranged along the circumference of the filter cylinder, the upper ends of the sixth springs are fixedly connected to the second fixing ring plates, and the lower ends of the sixth springs are fixedly connected to the upper side face of the second filter screen.

8. A multi-stage filtration device for mine water in a coal mine as claimed in claim 1, wherein:

the upper end of cartridge filter is fixed to be provided with the inlet tube, and the lower extreme of cartridge filter is fixed to be provided with the outlet pipe.

9. A multi-stage filtration device for mine water in a coal mine as claimed in claim 8, wherein:

the first collecting tank, the second collecting tank and the third collecting tank are fixedly arranged on the peripheral wall of the filter cartridge; the first collecting tank, the second collecting tank and the third collecting tank are sequentially arranged along the direction from top to bottom, the first collecting tank is communicated with the first discharge port, and a plurality of second filtering holes are formed in the first collecting tank; the second collecting tank is communicated with the second discharge port, and a plurality of third filter holes are formed in the second collecting tank; the second filter holes and the third filter holes are staggered in the radial direction of the filter cartridge; the third collecting tank is communicated with the water outlet pipe and is used for collecting water filtered by the first collecting tank and the second collecting tank.

10. A multi-stage filtration device for mine water in a coal mine as claimed in claim 8, wherein:

the coal mine water multistage filtering device further comprises a second motor, the second motor is fixedly arranged on the filter cartridge, and an output shaft of the second motor is fixedly connected to the upper end of the rotating shaft.