Coal mine wastewater pipeline filtering device and method thereof

Abstract

The present application relates to the field of pipeline filtering, and discloses a coal mine wastewater pipeline filtering device and method, which effectively solves the problem that it is not easy to clean the inside of the filter screen in the filter through hole sleeve when impurities are removed, and the inside of the filter screen is easily blocked, comprising a machine body, one end of the machine body is provided with a water outlet pipe, the water outlet pipe is provided with a flange at the end away from the machine body, a liquid inlet filtering assembly is arranged in the machine body, the liquid inlet filtering assembly comprises an end pipe arranged on the side of the machine body away from the water outlet pipe, an inner pipe is arranged at the end of the end pipe close to the machine body, the end pipe and the inner pipe are connected, the inner pipe is arranged in the machine body, and first filter holes are uniformly arranged on the outer wall of the inner pipe, when impurities need to be removed, the filter screen moves towards the end cover, the first impurity removal pipe is connected with the inner pipe, the second impurity removal pipe is connected with the filter screen, the impurities are easily discharged from the first impurity removal pipe and the second impurity removal pipe, and the anti-blocking effect of the equipment is improved.

Description

Technical Field

[0001] This invention belongs to the field of pipeline filtration, specifically a coal mine wastewater pipeline filtration device and method. Background Technology

[0002] A coal mine refers to a place rich in coal resources. It usually refers to a factory that produces coal by underground mining or open-pit mining. When the coal seam is far from the surface, it is generally chosen to excavate tunnels underground to mine the coal. This is called an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine the coal. This is called an open-pit coal mine.

[0003] Coal mining processes generate large amounts of wastewater, including mine water. This wastewater cannot be discharged directly, as direct discharge would cause serious pollution. Therefore, existing mines use wastewater treatment devices. However, the filter components of these devices are easily clogged by debris in the coal mine wastewater, resulting in poor filtration performance.

[0004] According to the patent document with authorization announcement number "CN203564848U" and invention title "Multi-purpose Pipeline Filtering Device", the description states that the multi-purpose pipeline filtering device has a housing, with an outlet pipe and an inlet pipe connected to both ends of the housing respectively. The outer ends of the outlet pipe and the inlet pipe are equipped with connecting flanges. A pressure gauge protective cover and a pressure gauge seat are located on the upper end of the housing, with the bottom of the pressure gauge seat communicating with the housing. Inside the housing is a filter through-hole sleeve, one end of which is open and connected to the inlet pipe, while the other end is closed and connected to the outlet pipe. A gap is left between the inlet and outlet pipes. A filter screen with an opening at one end of the inlet pipe is installed inside the filter through-hole sleeve. A cleaning port is located at the upper end of the filter through-hole sleeve, with one end extending outside the housing for easy cleaning. A slag discharge port is located at the lower end of the filter through-hole sleeve, with one end extending outside the housing for easy slag discharge. During use, liquid or raw material enters through the inlet pipe, passes through two stages of filtration, and then exits through the outlet pipe. The entire process is monitored by a pressure gauge, which easily and conveniently prevents pipe blockage. However, the following drawbacks still exist:

[0005] Because the filter sleeve has a filter screen inside, the water is filtered twice through the filter screen and the filter sleeve. However, when cleaning, only the inside of the filter sleeve can be cleaned, and it is not easy to clean the inside of the filter screen. This can easily cause the filter screen to become clogged, affecting its use. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, the present invention provides a coal mine wastewater pipeline filtration device and method, which effectively solves the problem that it is not easy to clean the inside of the filter screen in the filter through-hole sleeve when removing impurities from coal mine wastewater, which easily causes the filter screen to become clogged.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a coal mine wastewater pipeline filtration device, comprising a body, an outlet pipe installed at one end of the body, a flange installed at the end of the outlet pipe away from the body, and an inlet filtration assembly installed inside the body.

[0008] The liquid inlet filtration assembly includes an end tube installed on the side of the machine body away from the outlet pipe, an inner tube installed at the end of the end tube close to the machine body, the end tube and the inner tube are connected internally, the inner tube is located inside the machine body, the outer wall of the inner tube is evenly provided with first filter holes, an internal filter valve is installed inside the inner tube, and an inlet pipe is installed at the top of the end tube.

[0009] The end of the end tube away from the machine body is equipped with a cleaning control component. The end of the internal tube away from the end tube is provided with a backflush port. The end of the internal tube away from the end tube is equipped with a backflush pipe. One end of the backflush pipe is connected to the inside of the internal tube through the backflush port. The other end of the backflush pipe extends to the top of the machine body. The bottom end of the end tube is equipped with a first cleaning pipe and a second cleaning pipe.

[0010] Preferably, the internal filter valve includes a stop block installed inside the end tube, a filter screen installed at one end of the stop block near the internal tube, an inner groove opened inside the stop block, the inner groove communicating with the inside of the filter screen, a second filter hole evenly opened on the outer wall of the filter screen, the diameter of the second filter hole being larger than the diameter of the first filter hole, and a rotating impurity removal component installed on the stop block and the filter screen.

[0011] Preferably, the diameter of the filter screen is larger than the diameter of the backflush port, the side of the filter screen near the backflush pipe is in close contact with the inner wall of the inner pipe, one end of the filter screen seals the backflush port, the outer wall of the baffle is in close contact with the inner wall of the end pipe, and the diameter of the baffle is larger than the diameter of the filter screen.

[0012] Preferably, the top of the baffle is provided with a water inlet hole, which is located directly below the water inlet pipe. Water flows into the inner tank through the water inlet pipe and the water inlet hole. The bottom of the inner tank is provided with a debris removal hole, which is located below the water inlet hole. The first debris removal pipe is located on the side of the debris removal hole closer to the machine body. The bottom wall of the baffle seals the first debris removal pipe. The second debris removal pipe is located on the side of the baffle away from the machine body.

[0013] Preferably, the impurity removal control component includes an end block installed on the side of the baffle away from the filter screen, with sliders symmetrically installed on both sides of the end block, the sliders being slidably installed inside the slide groove, the slide groove being symmetrically opened on the inner wall of the end tube, a magnetic block being installed on the end block, the diameter of the magnetic block being smaller than the diameter of the baffle, the end of the end tube being open at the end away from the machine body, and a threaded groove being tapped on the outer wall of the end tube.

[0014] Preferably, the end of the end tube away from the machine body is threadedly connected to an end cover. An electromagnet is installed on the side of the end cover away from the machine body, and the electromagnet is magnetically connected to a magnetic block. A throttle is installed on the side of the end cover away from the machine body. A cover plate is installed inside the end cover. A limit block is installed on the side of the cover plate away from the machine body. The limit block is rotatably installed inside a limit groove. The limit groove is opened on the end cover. A counterweight is installed at the bottom of the cover plate. Limit stops are symmetrically installed on both sides of the cover plate. The limit stops are slidably installed inside a slide groove. A fixed cylinder is installed on the side of the cover plate close to the machine body. A movable plate is movably installed inside the fixed cylinder. A pressure rod is installed on the side of the movable plate close to the machine body. One end of the pressure rod contacts the side of the stop block away from the machine body. A first spring is installed on the side of the movable plate away from the pressure rod.

[0015] Preferably, the rotating impurity removal assembly includes an installation groove on the inner wall of the end of the stop block near the filter screen. The filter screen is installed inside the installation groove, and the outer wall of the filter screen is in close contact with the inner wall of the installation groove. A slot is provided on the outer wall of the filter screen. A removal groove is symmetrically provided at the top and bottom of the installation groove. A side groove is provided on the side of the removal groove away from the filter screen. A locking block is movably installed inside the removal groove. The locking block is locked inside the slot. A side plate is installed on the side of the locking block near the side groove. The outer wall of the side plate is in close contact with the inner wall of the side plate. A second spring is symmetrically installed at the top of the locking block. The top of the second spring is fixedly connected to the inner top wall of the removal groove.

[0016] Preferably, a rod groove is formed on the side of the side groove away from the inner groove, an outer groove is formed on the inner wall of the rod groove, a snap-fit ​​groove is symmetrically formed on the top wall of the outer groove, an entry groove is symmetrically formed on the top wall of the outer groove, the entry groove extends to the outside of the stop block, a locking rod is installed inside the rod groove, locking blocks are symmetrically installed on both sides of the locking rod, the locking blocks are snapped into the inside of the entry groove, the end of the locking rod near the side plate is in close contact with the side plate, and a slot is formed on the end of the locking rod away from the side plate.

[0017] Preferably, a scraper is installed at equal angles on the outer wall of the filter screen, the end of the scraper away from the filter screen is in close contact with the inner wall of the inner tube, and an end rod is installed on the end of the filter screen away from the baffle, with fan blades installed at equal angles on the outer side of the end rod.

[0018] Preferably, the operating steps of a coal mine wastewater pipeline filtration device are as follows:

[0019] 1. After installing the baffle and filter screen, insert the entire internal filter valve into the internal tube so that one end of the filter screen closes the backflow port and the slider slides into the groove.

[0020] 2. After screwing on the end cap, the limiting stop block enters the interior of the slide groove, and the pressure rod presses the filter screen to fix the internal filter valve.

[0021] 3. Wastewater enters the inner tank through the inlet pipe and inlet hole. After the water flows through the second filter hole for the first filtration, it enters the inner pipe and undergoes a second filtration at the first filter hole. After entering the machine body, the water is discharged from the flange.

[0022] 4. When it is necessary to handle debris, turn on the electromagnet to attract the magnetic block, which will move the filter screen toward the end cover until it reaches the limit position. The backflush pipe will then pass in reverse cleaning water into the inner pipe. The cleaning water will discharge the debris in the inner pipe from the first debris removal pipe and the debris in the filter screen from the second debris removal pipe.

[0023] 5. After the electromagnet is de-energized, the filter screen moves back under the action of the first spring to perform subsequent water filtration.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] (1) In this invention, when the backflush port is closed by one end of the filter screen, the water inlet hole corresponds to the water inlet pipe. Water flows into the inner tank from the water inlet pipe and the water inlet hole, and is discharged after being filtered twice through the second filter hole and the first filter hole. When it is necessary to remove impurities, the filter screen moves toward the end cover to close the water inlet pipe and connect the first impurity removal pipe to the inner pipe and the second impurity removal pipe to the filter screen. After the backflush water is introduced into the backflush pipe, the impurities are flushed out from the first impurity removal pipe and the second impurity removal pipe, thereby improving the anti-clogging effect of the equipment.

[0026] (2) When the baffle and the filter screen are installed, the clip on the baffle is inserted into the slot of the filter screen, which makes it easy to disassemble and replace the filter screen. At the same time, the filter screen can rotate relative to the baffle. When the water flow impacts the fan blade, it drives the filter screen to rotate, causing the debris inside the filter screen to flip and fall off. Meanwhile, the scraper on the outside of the filter screen scrapes away the debris on the inner wall of the internal pipe, improving the removal effect of debris inside the equipment and improving the anti-clogging effect of the equipment.

[0027] (3) When it is necessary to remove debris, the electromagnet is energized to attract the magnetic block, which causes the stop block to move and close the water inlet pipe to stop the water inlet. At the same time, the filter screen opens the backwash port to facilitate the backwash water to enter, and opens the first and second debris removal pipes to facilitate the discharge of debris. When the stop block moves, the slider is slidably set in the slide groove, and the limit blocks on both sides of the end cover plate are also located in the slide groove. When the slider contacts the limit block, the filter screen moves to the limit position, which facilitates the limit of the filter screen and facilitates the movement of the stop block to the predetermined position, thereby improving the anti-clogging effect of the equipment.

[0028] (4) After the end cover is installed, the pressure rod on the end cover contacts the side of the stop block away from the filter screen and presses the stop block under the action of the first spring, which facilitates the positioning of the water inlet hole. At the same time, after the debris is removed, the filter screen moves back to its original position under the action of the first spring force, which facilitates the alignment of the water inlet hole and the water inlet pipe and facilitates water filtration. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the pipeline filtration device of the present invention;

[0032] Figure 2 This is a schematic diagram of the liquid inlet filtration assembly structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the internal filter valve structure of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 This is a schematic diagram of the filter screen structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the end block structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the end cap structure of the present invention;

[0038] In the diagram: 1. Body; 2. Outlet pipe; 3. Flange; 4. Inlet filtration assembly; 401. End pipe; 402. Internal pipe; 403. First filter hole; 404. Internal filter valve; 4041. Stop block; 4042. Inner tank; 4043. Inlet hole; 4044. Impurity removal hole; 4045. Filter screen; 4046. Second filter hole; 405. Inlet pipe; 406. Backflush port; 407. Backflush pipe; 408. First impurity removal pipe; 409. Second impurity removal pipe; 5. Impurity removal control assembly; 501. End block; 502. Slider; 503. Slide groove; 504. Magnetic block; 505. End cover; 506. Electromagnet; 50 7. Throttle; 508. Cover plate; 509. Limiting rotating block; 510. Limiting rotating groove; 511. Limiting stop block; 512. Counterweight block; 513. Fixed cylinder; 514. Movable plate; 515. Pressure rod; 516. First spring; 6. Rotating impurity removal assembly; 601. Mounting groove; 602. Slot; 603. Removal groove; 604. Side groove; 605. Locking block; 606. Side plate; 607. Second spring; 608. Rod groove; 609. External groove; 610. Snap-fit ​​groove; 611. Entry groove; 612. Locking rod; 613. Locking block; 614. Slotted groove; 615. Scraper; 616. End rod; 617. Fan blade. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] Example 1, by Figures 1-7 As shown, the present invention includes a body 1, a water outlet pipe 2 is installed at one end of the body 1, a flange 3 is installed at the end of the water outlet pipe 2 away from the body 1, and a liquid inlet filter assembly 4 is installed inside the body 1.

[0041] The liquid inlet filter assembly 4 includes an end pipe 401 installed on the side of the body 1 away from the outlet pipe 2. An inner pipe 402 is installed at the end of the end pipe 401 close to the body 1. The end pipe 401 and the inner pipe 402 are internally connected. The inner pipe 402 is located inside the body 1. First filter holes 403 are evenly opened on the outer wall of the inner pipe 402. An internal filter valve 404 is installed inside the inner pipe 402. An inlet pipe 405 is installed at the top of the end pipe 401.

[0042] The end of the end tube 401 away from the body 1 is equipped with a cleaning control component 5. The end of the internal tube 402 away from the end tube 401 is provided with a backflush port 406. The end of the internal tube 402 away from the end tube 401 is equipped with a backflush pipe 407. One end of the backflush pipe 407 is connected to the inside of the internal tube 402 through the backflush port 406. The other end of the backflush pipe 407 extends to the top of the body 1. The bottom end of the end tube 401 is equipped with a first cleaning pipe 408 and a second cleaning pipe 409.

[0043] The internal filter valve 404 includes a stop block 4041 installed inside the end pipe 401. A filter screen 4045 is installed at one end of the stop block 4041 near the internal pipe 402. An inner groove 4042 is formed inside the stop block 4041, which is connected to the inside of the filter screen 4045. Second filter holes 4046 are evenly formed on the outer wall of the filter screen 4045. The diameter of the second filter holes 4046 is larger than the diameter of the first filter holes 403. A rotating impurity removal assembly is installed on the stop block 4041 and the filter screen 4045. Component 6: The diameter of filter screen 4045 is larger than the diameter of backflushing port 406. The side of filter screen 4045 near backflushing pipe 407 is tightly attached to the inner wall of inner pipe 402. One end of filter screen 4045 closes backflushing port 406. The outer wall of baffle block 4041 is tightly attached to the inner wall of end pipe 401. The diameter of baffle block 4041 is larger than the diameter of filter screen 4045. A water inlet hole 4043 is provided at the top of baffle block 4041. The water inlet hole 4043 is located directly below water inlet pipe 405. Water flows through water inlet pipe 405 and... Water enters the inner tank 4042 through the water inlet 4043. A cleaning hole 4044 is located at the bottom of the inner tank 4042, below the water inlet 4043. A first cleaning pipe 408 is located on the side of the cleaning hole 4044 closest to the body 1. The bottom wall of the baffle 4041 closes the first cleaning pipe 408. A second cleaning pipe 409 is located on the side of the baffle 4041 furthest from the body 1. When one end of the filter screen 4045 closes the backwash port 406, the water inlet 4043 corresponds to the water inlet pipe 405, and water flows from the inlet... Water pipe 405 and water inlet 4043 enter the inner tank 4042 and are filtered twice through the second filter hole 4046 and the first filter hole 403 before being discharged. When impurity removal is required, the filter screen 4045 moves toward the end cover 505 to close the water inlet pipe 405 and connect the first impurity removal pipe 408 to the inner pipe 402 and the second impurity removal pipe 409 to the inner tank 4042. After backflushing water is introduced at the backflushing pipe 407, the impurities are flushed out from the first impurity removal pipe 408 and the second impurity removal pipe 409, improving the anti-clogging effect of the equipment.

[0044] The impurity removal control assembly 5 includes an end block 501 installed on the side of the stop block 4041 away from the filter screen 4045. Slider blocks 502 are symmetrically installed on both sides of the end block 501, and the sliders 502 are slidably installed inside a slide groove 503. The slide groove 503 is symmetrically opened on the inner wall of the end tube 401. A magnet 504 is installed on the end block 501, and the diameter of the magnet 504 is smaller than the diameter of the stop block 4041. The end tube 401 is open at the end away from the body 1, and a threaded groove is tapped on the outer wall of the end tube 401. An end cap 505 is threadedly connected to the end of the end tube 401 away from the body 1. An electromagnet 506 is installed on the side of the end cap 505 away from the body 1. The electromagnet 506 and the magnet 504... A magnetic connection is used. A handle 507 is installed on the side of the end cover 505 away from the body 1. A cover plate 508 is installed inside the end cover 505. A limiting rotating block 509 is installed on the side of the cover plate 508 away from the body 1. The limiting rotating block 509 is rotatably installed inside a limiting rotating groove 510, which is formed on the end cover 505. A counterweight 512 is installed at the bottom of the cover plate 508. Limiting stops 511 are symmetrically installed on both sides of the cover plate 508. The limiting stops 511 are slidably installed inside a sliding groove 503. A fixed cylinder 513 is installed on the side of the cover plate 508 closest to the body 1. A movable plate 514 is movably installed inside the fixed cylinder 513. A... The pressure rod 515 has one end in contact with the side of the stop block 4041 away from the body 1. The movable plate 514 is equipped with a first spring 516 on the side away from the pressure rod 515. When it is necessary to remove debris, the electromagnet 506 is energized to attract the magnetic block 504, causing the stop block 4041 to move and close the water inlet pipe 405 to stop the water inlet. At the same time, the filter screen 4045 opens the backwash port 406 to facilitate the entry of backwash water and opens the first impurity removal pipe 408 and the second impurity removal pipe 409 to facilitate the discharge of debris. When the stop block 4041 moves, the slider 502 is slidably set in the slide groove 503, and the limiting blocks 511 on both sides of the cover plate 508 on the end cover 505 are also located in the slide groove 503. When the slider 502 contacts the limit stop 511, the filter screen 4045 moves to its limit position, which facilitates the limiting of the filter screen 4045 and the movement of the stop block 4041 to the predetermined position, thus improving the anti-clogging effect of the equipment. After the end cover 505 is installed, the pressure rod 515 on the end cover 505 contacts the side of the stop block 4041 away from the filter screen 4045, and presses the stop block 4041 under the action of the first spring 516, which facilitates the positioning of the water inlet hole 4043. At the same time, after the debris is removed, the filter screen 4045 moves back to its original position under the elastic force of the first spring 516, which facilitates the alignment of the water inlet hole 4043 with the water inlet pipe 405, thus facilitating water filtration.

[0045] The rotating impurity removal assembly 6 includes a mounting groove 601 on the inner wall of the stop block 4041 near the filter screen 4045. The filter screen 4045 is installed inside the mounting groove 601, and the outer wall of the filter screen 4045 is in close contact with the inner wall of the mounting groove 601. A slot 602 is provided on the outer wall of the filter screen 4045. Removal grooves 603 are symmetrically provided at the top and bottom of the mounting groove 601. A side groove 604 is provided on the side of the removal groove 603 away from the filter screen 4045. A locking block 605 is movably installed inside the removal groove 603. The locking block 605 engages with the inside of the slot 602. A side plate 606 is installed on the side near the side groove 604. The outer wall of the side plate 606 is in close contact with the inner wall of the side plate 606. A second spring 607 is symmetrically installed on the top of the locking block 605. The top of the second spring 607 is fixedly connected to the inner top wall of the removal groove 603. A rod groove 608 is opened on the side of the side groove 604 away from the inner groove 4042. An outer groove 609 is opened on the inner wall of the rod groove 608. A locking groove 610 is symmetrically opened on the top wall of the outer groove 609. An entry groove 611 is symmetrically opened on the top wall of the outer groove 609. The entry groove 611 extends to the outer side of the stop block 4041. The rod groove 608... A locking rod 612 is installed inside the 08. Locking blocks 613 are symmetrically installed on both sides of the locking rod 612. The locking blocks 613 are engaged with the inside of the entry groove 611. The end of the locking rod 612 near the side plate 606 is in close contact with the side plate 606. A slot 614 is formed at the end of the locking rod 612 away from the side plate 606. Scrapers 615 are installed at equal angles on the outer wall of the filter screen 4045. The end of the scraper 615 away from the filter screen 4045 is in close contact with the inner wall of the internal tube 402. An end rod 616 is installed at the end of the filter screen 4045 away from the stop block 4041. The outer side of the end rod 616 is... The fan blades 617 are installed at an angle. When installing the baffle 4041 and the filter screen 4045, the locking block 605 on the baffle 4041 is inserted into the slot 602 of the filter screen 4045, which facilitates the removal and replacement of the filter screen 4045. At the same time, the filter screen 4045 can rotate relative to the baffle 4041. When the water flow impacts the fan blades 617, it drives the filter screen 4045 to rotate, causing the debris inside the filter screen 4045 to flip and fall off. Meanwhile, the scraper 615 on the outside of the filter screen 4045 scrapes away the debris on the inner wall of the internal pipe 402, improving the removal effect of debris inside the equipment and improving the anti-clogging effect of the equipment.

[0046] Working principle: During installation, one end of the filter screen 4045 is installed inside the mounting groove 601 of the stop block 4041. A flathead screwdriver is inserted into the slot 614 to push the locking rod 612 downward. At this time, the locking block 613 enters the outer groove 609 from the inlet groove 611. The locking rod 612 is then rotated so that the locking block 613 is engaged in the snap-fit ​​groove 610. After the locking rod 612 enters the side groove 604, the side plate 606 and the locking block 605 are pushed downward so that the locking block 605 is engaged in the inner tube 402, thereby connecting the stop block 4041 and the filter screen 4045. At this time, the filter screen 4045 can rotate along the mounting groove 601.

[0047] Insert the stop block 4041 into the end tube 401 along the slider 502 and the slide groove 503, so that one end of the filter screen 4045 closes the backwash port 406. At this time, the water inlet 4043 is located below the water inlet pipe 405. Screw the end cover 505 onto the end of the end tube 401 away from the body 1. Since the cover plate 508 is rotatably connected to the end cover 505, and the bottom end of the cover plate 508 is equipped with a counterweight 512, the cover plate 508 is always in the state where the counterweight 512 is at the lowest end during the rotation of the end cover 505. After the end cover 505 is installed, the limit stop block 511 enters the interior of the slide groove 503, and one end of the pressure rod 515 is tightly attached to the side of the stop block 4041 away from the body 1, thereby pressing the stop block 4041 and improving the water intake effect inside the inner tank 4042.

[0048] The top of the inlet pipe 405 is connected to a regular water pipe. Water flows into the inner tank 4042 through the inlet pipe 405 and the inlet hole 4043. The water undergoes a first filtration through the second filter hole 4046 of the filter screen 4045. The water flows between the filter screen 4045 and the inner pipe 402. Because the outer wall of the baffle 4041 is in close contact with the inner wall of the end pipe 401, the water can only undergo a second filtration through the first filter hole 403 before entering the machine body 1 and finally being discharged from the outlet pipe 2.

[0049] The top of the backflushing pipe 407 is connected to a cleaning water tank. A valve controls the switch, so the water inside the tank does not require further filtration. When blockages occur on the inner wall of the internal pipe 402 and inside the filter screen 4045, the electromagnet 506 is energized, attracting the magnetic block 504. This causes the stop block 4041 to move towards the end cover 505 until the slider 502 contacts the limit stop block 511. At this point, the stop block 4041 cannot move further, and the water inlet hole 4043 is misaligned with the water inlet pipe 405. The stop block 4041 seals the water inlet pipe 405, while the impurity removal hole 4044 is connected to the second impurity removal pipe 409. The baffle 4041 moves above the first impurity removal pipe 408, so that the first impurity removal pipe 408 is connected to the inside of the internal pipe 402, and the filter screen 4045 no longer blocks the backwash port 406. At this time, the cleaning water tank pump is turned on, and the water in the cleaning water tank enters the internal pipe 402 from the backwash pipe 407. Part of the water impacts the impurities on the inner wall of the internal pipe 402 and discharges them from the first impurity removal pipe 408. The other part of the water enters the filter screen 4045 and discharges the impurities in the filter screen 4045 from the impurity removal hole 4044 and the second impurity removal pipe 409, thereby facilitating the removal of impurities and improving the anti-clogging effect of the pipe.

[0050] When wastewater enters the inner pipe 402, it impacts the fan blades 617 on the end rod 616, pushing the filter screen 4045 to rotate, making it easier for debris inside the filter screen 4045 to fall out and be discharged. At the same time, the scraper 615 continuously scrapes the inner wall of the inner pipe 402, making it easier for debris inside the inner pipe 402 to be discharged, thereby improving the anti-clogging effect of the equipment.

[0051] After the debris is removed, the electromagnet 506 is de-energized, causing the attraction between the electromagnet 506 and the magnetic block 504 to disappear. At this time, under the elastic force of the first spring 516, the stop block 4041 is pushed back to its original position, so that the water inlet hole 4043 is connected to the water inlet pipe 405 for subsequent water filtration.

Claims

1. A coal mine wastewater pipeline filtration device, comprising a body (1), characterized in that: One end of the body (1) is equipped with a water outlet pipe (2), and the end of the water outlet pipe (2) away from the body (1) is equipped with a flange (3). The inside of the body (1) is equipped with a liquid inlet filter assembly (4). The liquid inlet filter assembly (4) includes an end pipe (401) installed on the side of the body (1) away from the outlet pipe (2). An inner pipe (402) is installed at the end of the end pipe (401) close to the body (1). The end pipe (401) and the inner pipe (402) are connected internally. The inner pipe (402) is located inside the body (1). First filter holes (403) are evenly opened on the outer wall of the inner pipe (402). An internal filter valve (404) is installed inside the inner pipe (402). An inlet pipe (405) is installed at the top of the end pipe (401). A cleaning control component (5) is installed at the end of the end tube (401) away from the body (1). A backflush port (406) is opened at the end of the internal tube (402) away from the end tube (401). A backflush pipe (407) is installed at the end of the internal tube (402) away from the end tube (401). One end of the backflush pipe (407) is connected to the inside of the internal tube (402) through the backflush port (406). The other end of the backflush pipe (407) extends to the top of the body (1). A first cleaning pipe (408) is installed at the bottom of the end tube (401). A second cleaning pipe (409) is installed at the bottom of the end tube (401). The internal filter valve (404) includes a stop (4041) installed inside the end tube (401). A filter screen (4045) is installed at one end of the stop (4041) near the internal tube (402). An inner groove (4042) is opened inside the stop (4041). The inner groove (4042) is connected to the inside of the filter screen (4045). Second filter holes (4046) are evenly opened on the outer wall of the filter screen (4045). The diameter of the second filter hole (4046) is larger than the diameter of the first filter hole (403). A rotating impurity removal component (6) is installed on the stop (4041) and the filter screen (4045). The impurity removal control assembly (5) includes an end block (501) installed on the side of the stop block (4041) away from the filter screen (4045). Slider blocks (502) are symmetrically installed on both sides of the end block (501). The sliders (502) are slidably installed inside the slide groove (503). The slide groove (503) is symmetrically opened on the inner wall of the end tube (401). A magnetic block (504) is installed on the end block (501). The diameter of the magnetic block (504) is smaller than the diameter of the stop block (4041). The end tube (401) is open at one end away from the body (1). The outer wall of the end tube (401) is tapped with a threaded groove. An end cap (505) is threaded to the end of the end tube (401) away from the body (1). An electromagnet (506) is installed on the side of the end cap (505) away from the body (1). The electromagnet (506) is magnetically connected to a magnetic block (504). A throttle (507) is installed on the side of the end cap (505) away from the body (1). A cover plate (508) is installed inside the end cap (505). A limit block (509) is installed on the side of the cover plate (508) away from the body (1). The limit block (509) is rotatably mounted inside a limit groove (510). The limit groove (510) is opened on the end cap (505). A counterweight (512) is installed at the bottom of the cover plate (508). Limiting blocks (511) are symmetrically installed on both sides of the cover plate (508). The limiting blocks (511) are slidably installed inside the slide groove (503). A fixed cylinder (513) is installed on the side of the cover plate (508) near the machine body (1). A movable plate (514) is movably installed inside the fixed cylinder (513). A pressure rod (515) is installed on the side of the movable plate (514) near the machine body (1). One end of the pressure rod (515) contacts the side of the stop block (4041) away from the machine body (1). A first spring (516) is installed on the side of the movable plate (514) away from the pressure rod (515).

2. The coal mine wastewater pipeline filtration device according to claim 1, characterized in that: The diameter of the filter screen (4045) is larger than the diameter of the backflush port (406). The side of the filter screen (4045) near the backflush pipe (407) is in close contact with the inner wall of the inner pipe (402). One end of the filter screen (4045) closes the backflush port (406). The outer wall of the baffle (4041) is in close contact with the inner wall of the end pipe (401). The diameter of the baffle (4041) is larger than the diameter of the filter screen (4045).

3. A coal mine wastewater pipeline filtration device according to claim 1, characterized in that: The top of the baffle (4041) is provided with a water inlet hole (4043), which is located directly below the water inlet pipe (405). Water flows through the water inlet pipe (405) and the water inlet hole (4043) into the inner tank (4042). The bottom of the inner tank (4042) is provided with a cleaning hole (4044), which is located below the water inlet hole (4043). The first cleaning pipe (408) is located on the side of the cleaning hole (4044) close to the machine body (1). The bottom wall of the baffle (4041) closes the first cleaning pipe (408). The second cleaning pipe (409) is located on the side of the baffle (4041) away from the machine body (1).

4. A coal mine wastewater pipeline filtration device according to claim 1, characterized in that: The rotating impurity removal assembly (6) includes a mounting groove (601) on the inner wall of the stop block (4041) near the filter screen (4045). The filter screen (4045) is installed inside the mounting groove (601), and the outer wall of the filter screen (4045) is in close contact with the inner wall of the mounting groove (601). A slot (602) is provided on the outer wall of the filter screen (4045). Removal grooves (603) are symmetrically provided at the top and bottom of the mounting groove (601), and the removal grooves (603) are located away from the filter screen (4045). A side groove (604) is provided on one side of the 45), and a locking block (605) is movably installed inside the removal groove (603). The locking block (605) is engaged inside the locking groove (602). A side plate (606) is installed on the side of the locking block (605) near the side groove (604). The outer wall of the side plate (606) is in close contact with the inner wall of the side plate (606). A second spring (607) is symmetrically installed on the top of the locking block (605). The top of the second spring (607) is fixedly connected to the inner top wall of the removal groove (603).

5. A coal mine wastewater pipeline filtration device according to claim 4, characterized in that: A rod groove (608) is provided on the side of the side groove (604) away from the inner groove (4042). An outer groove (609) is provided on the inner wall of the rod groove (608). A snap-fit ​​groove (610) is symmetrically provided on the top wall of the outer groove (609). An entry groove (611) is symmetrically provided on the top wall of the outer groove (609). The entry groove (611) extends to the outside of the stop block (4041). A locking rod (612) is installed inside the rod groove (608). Locking blocks (613) are symmetrically installed on both sides of the locking rod (612). The locking blocks (613) are snapped into the inside of the entry groove (611). The end of the locking rod (612) near the side plate (606) is in close contact with the side plate (606). A slot (614) is provided on the end of the locking rod (612) away from the side plate (606).

6. A coal mine wastewater pipeline filtration device according to claim 1, characterized in that: A scraper (615) is installed at equal angles on the outer wall of the filter screen (4045). The end of the scraper (615) away from the filter screen (4045) is in close contact with the inner wall of the inner tube (402). An end rod (616) is installed on the end of the filter screen (4045) away from the stop block (4041). A fan blade (617) is installed at equal angles on the outer side of the end rod (616).

7. The method of using a coal mine wastewater pipeline filtration device according to any one of claims 1-6, wherein the operation steps are as follows:

1. After installing the stop block (4041) and the filter screen (4045), insert the entire internal filter valve (404) into the internal tube (402), so that one end of the filter screen (4045) closes the backflow port (406), and the slider (502) slides in connection with the slide groove (503).

2. After screwing on the end cap (505), the limiting stop block (511) enters the interior of the slide groove (503), and the pressure rod (515) presses the filter screen (4045) to fix the internal filter valve (404).

3. Water flows into the inner tank (4042) through the inlet pipe (405) and the inlet hole (4043). After the water undergoes the first filtration through the second filter hole (4046), it enters the inner pipe (402) and undergoes the second filtration at the first filter hole (403). After the water enters the machine body (1), it is discharged from the flange (3).

4. When it is necessary to handle debris, turn on the electromagnet (506) to attract the magnetic block (504), which will drive the filter screen (4045) to move toward the end cover (505) until it moves to the limit position. The backwash pipe (407) will pass reverse cleaning water into the inner pipe (402). The cleaning water will discharge the debris in the inner pipe (402) from the first cleaning pipe (408) and discharge the debris in the filter screen (4045) from the second cleaning pipe (409).

5. After the electromagnet (506) is de-energized, the filter screen (4045) moves back under the action of the first spring (516) to perform subsequent water filtration.

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